newlib-cygwin/winsup/cygwin/fork.cc

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2000-02-18 03:38:33 +08:00
/* fork.cc
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
2007, 2008, 2009, 2010, 2011, 2012 Red Hat, Inc.
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This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include "cygerrno.h"
#include "sigproc.h"
#include "pinfo.h"
Add "path.h" include throughout, where needed. Use new path_conv methods and operators to simplify testing for directory and attributes, throughout. * path.h (path_conv::exists): New method. (path_conv::has_attribute): Ditto. (path_conv::isdir): Ditto. (path_conv::DWORD &): New operator. (path_conv::int &): Ditto. * dir.cc (rmdir): Eliminate a goto. * dtable.cc (dtable::build_fhandler): Accept opt and suffix info for path_conv.check. Return fh == NULL on path_conv error. Pass unit to set_name as appropriate. (dtable::reset_unix_path_name): New method. * dtable.h (dtable): Declare new method. Reflect arg changes to build_fhandler. * fhandler.cc (fhandler_disk_dummy_name): Eliminate. (fhandler_base::set_name): Expect paths to be NULL. Build unix_path_name from win32_path_name when it is a device. (fhandler_base::reset_unix_path_name): New method. (fhandler_base::raw_read): Report EISDIR when ERROR_INVALID_FUNCTION or ERROR_INVALID_PARAMETER and reading a directory. (fhandler_disk_file::fstat): Don't call stat_dev since we should now never be calling fhandler_disk_file methods with devices. (fhandler_base::fhandler_base): Clear {unix,win32}_path_name. (fhandler_base::~fhandler_base): Always free {unix,win32}_path_name. (fhandler_disk_file::fhandler_disk_file): Remove set_no_free_names kludge. (fhandler_disk_file::open): Ditto. * fhandler.h (fhandler_base::no_free_names): Eliminate. (fhandler_base::set_no_free_names): Ditto. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Don't set unix_path_name here. * path.cc (fchdir): Lock fd table throughout. Use new dtable::reset_unix_path_name method to reset path. * syscalls.cc (stat_worker): Reorganize to always call fstat method. Pass path_conv method to fhandler_*::open. (chroot): Elminate a goto.
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#include "path.h"
* devices.cc: New file. * devices.gperf: New file. * devices.shilka: New file. * cygwin-gperf: New file. * cygwin-shilka: New file. * fhandler_fifo.cc: New file. * fhandler_nodevice.cc : New file. Reorganize headers so that path.h precedes fhandler.h throughout. Remove device argument and unit arguments from fhandler constructors throughout. Remove pc arguments to fhandler functions and use internal pc element instead, throughout. Use dev element in pc throughout. Use major/minor elements rather than units and device numbers previously in fhandler class. Use correct methods for fhandler file names rather than directly accessing file name variables, throughout. * Makefile.in (DLL_OFILES): Add devices.o, fhandler_fifo.o * dcrt0.cc (dll_crt0_1): Call device::init. * devices.h: Renumber devices based on more Linux-like major/minor numbers. Add more devices. Declare standard device storage. (device): Declare struct. * dir.cc (opendir): Use new 'build_fh_name' to construct a fhandler_* type. * dtable.cc (dtable::get_debugger_info): Ditto. (cygwin_attach_handle_to_fd): Ditto. (dtable::release): Remove special FH_SOCKET case in favor of generic "need_fixup_before" test. (dtable::init_std_file_from_handle): Use either build_fh_dev or build_fh_name to build standard fhandler. (dtable::build_fh_name): Renamed from dtable::build_fhandler_from_name. Move out of dtable class. Don't accept a path_conv argument. Just build it here and pass it to: (build_fh_pc): Renamed from dtable::build_fhandler. Move out of dtable class. Use intrinsic device type in path_conv to create new fhandler. (build_fh_dev): Renamed from dtable::build_fhandler. Move out of dtable class. Simplify arguments to just take new 'device' type and a name. Just return pointer to fhandler rather than trying to insert into dtable. (dtable::dup_worker): Accommodate above build_fh name changes. (dtable::find_fifo): New (currently broken) function. (handle_to_fn): Use strechr for efficiency. * dtable.h: Reflect above build_fh name changes and argument differences. (fhandler_base *&operator []): Return self rather than copy of self. * fhandler.cc (fhandler_base::operator =): Use pc element to set normalized path. (fhandler_base::set_name): Ditto. (fhandler_base::raw_read): Use method to access name. (fhandler_base::write): Correctly use get_output_handle rather than get_handle. (handler_base::device_access_denied): New function. (fhandler_base::open): Eliminate pc argument and use pc element of fhandler_base throughout. (fhandler_base::fstat): Detect if device is based in filesystem and use fstat_fs to calculate stat, if so. (fhandler_base::fhandler_base): Eliminate handling of file names and, instead, just free appropriate component from pc. (fhandler_base::opendir): Remove path_conv parameter. * fhandler.h: Remove all device flags. (fhandler_base::pc): New element. (fhandler_base::set_name): Change argument to path_conv. (fhandler_base::error): New function. (fhandler_base::exists): New function. (fhandler_base::pc_binmode): New function. (fhandler_base::dev): New function. (fhandler_base::open_fs): New function. (fhandler_base::fstat_fs): New function. (fhandler_base::fstat_by_name): New function. (fhandler_base::fstat_by_handle): New function. (fhandler_base::isfifo): New function. (fhandler_base::is_slow): New function. (fhandler_base::is_auto_device): New function. (fhandler_base::is_fs_special): New function. (fhandler_base::device_access_denied): New function. (fhandler_base::operator DWORD&): New operator. (fhandler_base::get_name): Return normalized path from pc. (fhandler_base::get_win32_name): Return windows path from pc. (fhandler_base::isdevice): Renamed from is_device. (fhandler_base::get_native_name): Return device format. (fhandler_fifo): New class. (fhandler_nodevice): New class. (select_stuff::device_specific): Remove array. (select_stuff::device_specific_pipe): New class element. (select_stuff::device_specific_socket): New class element. (select_stuff::device_specific_serial): New class element. (select_stuff::select_stuff): Initialize new elements. * fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Move to base class from fhandler_disk_file. (fhandler_base::fstat_by_name): Ditto. (fhandler_base::fstat_by_name): Ditto. (fhandler_disk_file::open): Move most functionality into fhandler_base::open_fs. (fhandler_base::open_fs): New function. (fhandler_disk_file::close): Move most functionality into fhandler_base::close_fs. (fhandler_base::close_fs): New function. * fhandler_mem.cc (fhandler_dev_mem::open): Use device name in debugging output. * fhandler_socket.cc (fhandler_socket::set_connect_secret): Copy standard urandom device into appropriate place. (fhandler_socket::accept): Reflect change in fdsock return value. * fhandler_tty.cc: See "throughouts" above. * net.cc: Accommodate fdsock change throughout. (fdsock): Return success or failure, accept fd argument and device argument. * path.cc (symlink_info::major): New element. (symlink_info::minor): New element. (symlink_info::parse_device): Declare new function. (fs_info::update): Accommodate changes in path_conv class. (path_conv::fillin): Ditto. (path_conv::return_and_clear_normalized_path): Eliminate. (path_conv::set_normalized_path): New function. (path_conv::path_conv): Set info in dev element. Use path_conv methods Check for FH_FS rather than FH_BAD to indicate when to fill in filesystem stuff. where appropriate rather than direct access. Use set_normalized_path to set normalized path. (windows_device_names): Eliminate. (get_dev): Ditto. (get_raw_device_number): Ditto. (get_device_number): Ditto. (win32_device_name): Call new device name parser to do most of the heavy lifting. (mount_info::conv_to_win32_path): Fill in dev field as appropriate. (symlink_worker): Handle new device files. (symlink_info::check): Ditto. (symlink_info::parse_device): Define new function. * path.h (executable_states): Move here from fhandler.h. (fs_info): Rename variables to *_storage and create methods for accessing same. (path_conv): Add dev element, remove devn and unit and adjust inline methods to accommodate. (set_normalized_path): Declare new function. * pinfo.cc (_pinfo::commune_recv): Add broken support for handling fifos. (_pinfo::commune_send): Ditto. * pipe.cc (fhandler_pipe::close): check for existence of handle before closing it. (handler_pipe::create): Rename from make_pipe. Change arguments to accept fhandler_pipe array. Accommodate fifos. (pipe): Rework to deal with fhandler_pipe::create changes. (_pipe): Ditto. * select.cc: Use individual device_specific types throughout rather than indexing with obsolete device number. (set_bits): Use is_socket call rather than checking device number. * shared_info.h (CURR_MOUNT_MAGIC): Update. (conv_to_win32_path): Reflect addition of device argument. * syscalls.cc (mknod_worker): New function. (open): Use build_fh_name to build fhandler. (chown_worker): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. (chmod_device): New function. (chmod): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. Use chmod_device to set mode of in-filesystem devices. (stat_worker): Eliminate path_conv argument. Call build_fh_name to construct fhandler. Use fh->error() rather than pc->error to detect errors in fhandler construction. (access_worker): New function pulled from access. Accommodate in-filesystem devices. (access): Use access_worker. (fpathconf): Detect if this is an 'auto' device rather than an on-filesystem device and handle appropriately. (mknod_worker): New function. (mknod32): New function. (chroot): Free normalized path -- assuming it was actually cmalloced. * tty.cc (create_tty_master): Tweak for new device class. (tty::common_init): Ditto. * winsup.h (stat_worker): Remove. (symlink_worker): Declare. * exceptions.cc (set_process_mask): Just call sig_dispatch_pending and don't worry about pending_signals since sig_dispatch_pending should always do the right thing now. (sig_handle): Reorganize SIGCONT handling to more closely conform to SUSv3. * pinfo.h: Move __SIG enum to sigproc.h. (PICOM_FIFO): New enum element. (_pinfo): Remove 'thread2signal' stuff throughout class. (_pinfo::commune_send): Make varargs. (_pinfo::sigtodo): Eliminate. (_pinfo::thread2signal): Ditto. * signal.cc (kill_worker): Eliminate call to setthread2signal. * sigproc.cc (local_sigtodo): Eliminate. (getlocal_sigtodo): Ditto. (sigelem): New class. (pending_signals): New class. (sigqueue): New variable, start of sigqueue linked list. (sigcatch_nonmain): Eliminate. (sigcatch_main): Eliminate. (sigcatch_nosync): Eliminate. (sigcomplete_nonmain): Eliminate. (pending_signals): Eliminate. (sig_clear): Call signal thread to clear pending signals, unless already in signal thread. (sigpending): Call signal thread to get pending signals. (sig_dispatch_pending): Eliminate use of pending_signals and just check sigqueue. (sigproc_terminate): Eliminate all of the obsolete semaphore stuff. Close signal pipe handle. (sig_send): Eliminate all of the obsolete semaphore stuff and use pipe to send signals. (getevent): Eliminate. (pending_signals::add): New function. (pending_signals::del): New function. (pending_signals::next): New function. (wait_sig): Eliminate all of the obsolete semaphore stuff. Use pipe to communicate and maintain a linked list of signals. * sigproc.h: Move __SIG defines here. Add __SIGPENDING. (sig_dispatch_pending): Remove "C" specifier. (sig_handle): Accept a mask argument. * thread.cc: Remove signal handling considerations throughout.
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#include "fhandler.h"
#include "dtable.h"
* Makefile.in: Add cygheap.o. * child_info.h: Add specific exec class. * cygheap.h: New file. Contains declarations for cygwin heap. * cygheap.cc: New file. Implements cygwin heap functions. * dcrt0.cc (quoted): Simplify due to new method for passing arguments between cygwin programs. (alloc_stack_hard_way): Attempt to handle overlapped stack. (dll_crt0_1): Move child_info processing here. Accomodate new method for passing arguments between cygwin programs. Initialize cygwin heap. Establish __argc and __argv variables. (_dll_crt0): Move most of child_info processing to dll_crt0_1. (cygwin_dll_init): Remove duplication. * dtable.cc (dtable::extend): Allocate dtable using cygwin heap. (dtable::build_fhandler): Ditto for fhandler type being constructed. (dtable::dup_worker): Free new fhandler from cygwin heap on error. (dtable::select_*): Don't assume that this == fdtab. (dtable::linearize_fd_array): Delete. (dtable::delinearize_fd_array): Delete. (dtable::fixup_after_exec): New file. (dtable::vfork_child_dup): Use cygwin heap. (dtable::vfork_parent_restore): Ditto. * dtable.h: Remove obsolete methods. Add new method. * environ.cc (posify): Eliminate already_posix parameter and logic. (envsize): New function. (_addenv): Use envsize. (environ_init): Accept an argument pointing to an existing environment list. If supplied, allocate space for this in the the program's heap. * fhandler.cc (fhandler_base::operator =): Move here from fhandler.h. Use cygwin heap to allocate filenames. (fhandler_base::set_name): Allocate/free names from cygwin heap. (fhandler_base::linearize): Delete. (fhandler_base::de_linearize): Delete. (fhandler_base::operator delete): Free from cygwin heap. (fhandler_base::~fhandler_base): Ditto. * fhandler.h: Accomodate elimination of *linearize and other changes above. * fhandler_console.cc (fhandler_console::fixup_after_exec): Rename from de_linearize. * heap.h: New file. * fhandler_tty.cc (fhandler_tty_slave::fhandler_tty_slave): Use cygwin heap for name. fhandler_tty::fixup_after_exec): Rename from de_linearize. * fork.cc (fork): Call cygheap_fixup_in_child. * heap.cc: Use declarations in heap.h. * malloc.cc: Sprinkle assertions throughout to catch attempts to free/realloc something from the cygwin heap. * path.cc: Throughout, eliminate use of per-thread cache for cwd. Use cwd_* functions rather than cwd_* variables to access cwd_win32 and cwd_posix. (cwd_win32): New function. (cwd_posix): New function. (cwd_hash): New function. (cwd_fixup_after_exec): New function. * path.h: Accomodate path.cc changes. * pinfo.cc (pinfo_init): Accept a pointer to an environment table. Pass this to environ_init. Eliminate old 'title' tests. * pinfo.h: Accomodate above change in argument. * spawn.cc (struct av): New method for building argv list. (av::unshift): New method. (spawn_guts): Allocate everything that the child process needs in the cygwin heap and pass a pointer to this to the child. Build argv list using new method. Eliminate delinearize stuff. * thread.h: Eliminate _cwd_win32 and _cwd_posix buffers. * winsup.h: Eliminate obsolete functions. Add envsize() declaration.
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#include "cygheap.h"
#include "child_info.h"
* child_info.h (child_info_spawn::hexec_proc): Eliminate. * dcrt0.cc (dll_crt0_0): Remove hexec_proc stuff. * fork.cc (fork_child): Remove call to pinfo_fixup_after_fork. * pinfo.cc (set_myself): Close and zero pid_handle if set. (pinfo_fixup_after_fork): Delete. (proc_waiter): Don't close vchild.hProcess here. Do that when we are remove the vchild from procs. Save hProcess as pid_handle only on first reparent operation. (pinfo::wait): Don't set pid_handle here. (pinfo::alert_parent): Always try to send signal. If unsuccessful then close and zero wr_proc_pipe. * pinfo.h (pinfo::pinfo): Make sure that appropriate parts of the class are zeroed on construction. (pinfo::alert_parent): Take char argument. (pinfo_fixup_after_fork): Delete declaration. (hexec_proc): Ditto. * sigproc.cc (remove_proc): Close pid_handle and hProcess if appropriate. * spawn.cc (spawn_guts): Set cygheap->pid_handle on first exec. * cygheap.h (init_cygheap::pid_handle): New element. * pinfo.cc (set_myself): Clear previously existing cygheap->pid_handle when a new process has been started. (pinfo::wait): Make sure that a handle to the newly forked/spawned process is kept around so that the pid will not be reused. * pinfo.h (_pinfo::pid_handle): Move. (pinfo::pid_handle): to here. * spawn.cc (spawn_guts): Create a pid_handle in cygheap prior to spawning to ensure that the pid does not get reused during the lifetime of the "cygwin pid". * pinfo.h (pinfo::alert_parent): New function. * exceptions.cc (sig_handle_tty_stop): Use alert_parent to send "signals" to parent. * fork.cc (fork_parent): Don't close pi.hProcess. Let the waiter thread do that. * pinfo.cc (proc_waiter): Detect case where process exits without setting the exit code and use value from GetExitCodeProcess. Reluctantly implement __SIGREPARENT. (pinfo::alert_parent): Define. * sigproc.h (__SIGREPARENT): New enum. * spawn.cc (spawn_guts): Send reparent signal to parent on exec. Always create process in suspended state to avoid races. Remove cygthread.h in favor of cygtls.h throughout since cygtls now includes cygthread.h. Eliminate ppid_handle usage throughout. * child_info.h: Regenerate magic number (child_info): Remove pppid_handle. * cygthread.h (cygthread::release): New method. Frees thread without waiting. * cygthread.cc (cygthread::stub): Set _ctinfo in _mytls to point to information for executing thread. Don't call SetEvent if thread is no longer in use. (cygthread::simplestub): Ditto. * cygtls.h (_cygtls::_ctinfo): New element contains pointer to information about executing cygthread, if any. * dcrt0.cc: Remove last vestiges of per_thread stuff. (dll_crt0_0): Ditto. Remove accommodation for ppid_handle. (do_exit): Remove obsolete reparenting test. (_exit): Exit with a more SUSv3-like exit value. * dtable.cc (dtable::stdio_init): Check for myself->cygstarted rather than myself->ppid_handle to see if we were started by a cygwin process. * exceptions.cc (open_stackdumpfile): Ditto. (handle_exceptions): Ditto. (ctrl_c_handler): Ditto. (sig_handle_tty_stop): Ditto. Let parent send signal to itself on STOP. (sigpacket::process): Comment out vfork test. (signal_exit): Use more SUSv3-like exit value on signal. * external.cc (fillout_pinfo): Don't set hProcess. * fork.cc: Remove VFORK cruft. (per_thread::set): Delete. (fork_child): Remove perthread stuff. (fork_parent): Remove obsolete subproc_init. Accommodate new method for tracking subprocesses. * pinfo.cc (set_myself): Accommodate new pinfo/_pinfo layout. Set some things here that used to be set in wait_sig. (_pinfo::exit): Set exitcode here. Close process pipe. (_pinfo::commune_send): Accommodeate new pinfo/_pinfo layout. (proc_waiter): New function. Waits, in a thread for subprocess to go away. (pinfo::wait): New function. Initialization for proc_waiter. * pinfo.h (_pinfo::exitcode): New element. (_pinfo::cygstarted): Ditto. (_pinfo::wr_proc_pipe): Ditto. (_pinfo::ppid_handle): Delete. (_pinfo::hProcess): Delete. (_pinfo::lock): Delete. (pinfo::hProcess): New element. (pinfo::lock): Ditto. (pinfo::wait): Declare new function. (pinfo::preserve): Define new function. * sigproc.cc: Remove old stuff from wait_subproc thread based method. (zombies): Remove. (procs): New. (my_parent_is_alive): Just check that the parent pid exists. (mychild): Just use pinfo methods to determine if child is mine. (proc_subproc): Revamp PROC_ADDCHILD to use pinfo::wait. Remove PROC_CHILDTERMINATED logic. Use different method to remove processes from list when SIGCHLD == SIG_IGN. (proc_terminate): Gut. (subproc_init): Delete. (init_child_info): Remove setting of pppid_handle. (checkstate): Revamp to only scan procs array. (remove_proc): Rename from remove_zombie. Don't close hProcess or pid_handle. Don't release memory if it's myself. (stopped_or_terminated): Change logic to handle new consolidated proc/zombie array. (wait_subproc): Delete. * sigproc.h: Remove obsolete EXIT_* defines. (subproc_init): Remove declaration. * spawn.cc (spawn_guts): Remove reparenting stuff. Use standard wait logic to wait for child if started from a non-cygwin process. * tlsoffsets.h: Regenerate. * tty.cc (tty_init): Check for myself->cygstarted rather than myself->ppid_handle to see if we were started by a cygwin process. * include/sys/signal.h (external_pinfo::exitcode): Replace hProcess. * include/sys/wait.h (WCOREDUMP): Define. * fhandler_tty.cc (fhandler_tty_slave::read): Add debugging output for timeout case. * signal.cc (abort): Flag that we are exiting with the ABORT signal.
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#include "cygtls.h"
* Makefile.in (DLL_OFILES): Add tls_pbuf.o. * autoload.cc (CreateDesktopW): Replace CreateDesktopA. (CreateWindowStationW): Replace CreateWindowStationA. (GetUserObjectInformationW): Replace GetUserObjectInformationA. * cygheap.h (cwdstuff::get): Assume default buffer size NT_MAX_PATH. * cygtls.cc (_cygtls::remove): Free temporary TLS path buffers. * cygtls.h (TP_NUM_C_BUFS): Define. (TP_NUM_W_BUFS): Define. (class tls_pathbuf): New class to store pointers to thread local temporary path buffers. (_local_storage::pathbufs): New member. * environ.cc (win_env::add_cache): Use temporary TLS path buffer instead of stack based buffer. (posify): Get temporary outenv buffer from calling function. (environ_init): Create temporary TLS path buffer for posify. (build_env): Create Windows environment block as WCHAR buffer. * environ.h (build_env): Change declaration accordingly. * external.cc (sync_winenv): Accommodate build_env change. * fhandler_console.cc (fhandler_console::need_invisible): Use GetUserObjectInformationW and CreateWindowStationW. * fhandler_process.cc (format_process_maps): Use temporary TLS path buffer instead of stack based buffer. * fork.cc (frok::parent): Convert to use CreateProcessW. * path.cc: Throughout use temporary TLS path buffers instead of stack based buffer. Replace checks for CYG_MAX_PATH by checks for NT_MAX_PATH. (getfileattr): New function to replace GetFileAttributesA. (normalize_win32_path): Remove Win32 and NT long path prefixes. (getwd): Assume PATH_MAX + 1 buffer per SUSv3. * path.h (class path_conv): Set path buffer to size NT_MAX_PATH. (iswdrive): Define. * pinfo.cc (commune_process): Use temporary TLS path buffer instead of stack based buffer. * registry.cc (get_registry_hive_path): Ditto. (load_registry_hive): Ditto. * spawn.cc (spawn_guts): Convert to use CreateProcessW and CreateProcessAsUserW. (av::fixup): Open/close file using NtOpenFile/NtClose. * syscalls.cc (mknod_worker): Allow PATH_MAX file name. (mknod32): Ditto. (getusershell): Ditto. * tls_pbuf.cc: New file implementing tls_pathbuf and tmp_pathbuf methods. * tls_pbuf.h: New header for files using tmp_pathbuf. * tlsoffsets.h: Regenerate. * winsup.h (NT_MAX_PATH): Define as 32767 to avoid USHORT overflow.
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#include "tls_pbuf.h"
#include "dll_init.h"
#include "cygmalloc.h"
#include "ntdll.h"
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#define NPIDS_HELD 4
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/* Timeout to wait for child to start, parent to init child, etc. */
/* FIXME: Once things stabilize, bump up to a few minutes. */
#define FORK_WAIT_TIMEOUT (300 * 1000) /* 300 seconds */
class frok
{
bool load_dlls;
child_info_fork ch;
const char *errmsg;
int child_pid;
int this_errno;
HANDLE hchild;
int __stdcall parent (volatile char * volatile here);
int __stdcall child (volatile char * volatile here);
bool error (const char *fmt, ...);
friend int fork ();
};
static void
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
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resume_child (HANDLE forker_finished)
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{
SetEvent (forker_finished);
debug_printf ("signalled child");
return;
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}
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/* Notify parent that it is time for the next step. */
static void __stdcall
sync_with_parent (const char *s, bool hang_self)
2000-02-18 03:38:33 +08:00
{
debug_printf ("signalling parent: %s", s);
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
fork_info->ready (false);
if (hang_self)
{
HANDLE h = fork_info->forker_finished;
/* Wait for the parent to fill in our stack and heap.
Don't wait forever here. If our parent dies we don't want to clog
the system. If the wait fails, we really can't continue so exit. */
DWORD psync_rc = WaitForSingleObject (h, FORK_WAIT_TIMEOUT);
debug_printf ("awake");
switch (psync_rc)
{
case WAIT_TIMEOUT:
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
api_fatal ("WFSO timed out %s", s);
break;
case WAIT_FAILED:
if (GetLastError () == ERROR_INVALID_HANDLE &&
WaitForSingleObject (fork_info->forker_finished, 1) != WAIT_FAILED)
break;
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
api_fatal ("WFSO failed %s, fork_finished %p, %E", s,
fork_info->forker_finished);
break;
default:
debug_printf ("no problems");
break;
}
}
2000-02-18 03:38:33 +08:00
}
bool
frok::error (const char *fmt, ...)
{
DWORD exit_code = ch.exit_code;
if (!exit_code && hchild)
{
exit_code = ch.proc_retry (hchild);
if (!exit_code)
return false;
}
if (exit_code != EXITCODE_FORK_FAILED)
{
va_list ap;
static char buf[NT_MAX_PATH + 256];
va_start (ap, fmt);
__small_vsprintf (buf, fmt, ap);
errmsg = buf;
}
return true;
}
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset. (child_info::rd_proc_pipe): Declare new field. (child_info::wr_proc_pipe): Ditto. (child_info::prefork): Declare new function, derived from previous pinfo version. * dcrt0.cc (child_info_fork::handle_fork): Close previous wr_proc_pipe when appropriate and assign new one from passed-in child_info block. (child_info_spawn::handle_spawn): Assign our wr_proc_pipe handle from passed-in child_info block. * fork.cc (child_info::prefork): Define new function. (frok::child): Clear rd_proc_pipe and wr_proc_pipe so they will not be closed by the child_info destructor. (frok::parent): Use child_info prefork handling, outside of retry loop. Set rd_proc_pipe in child's pinfo after successful CreateProcess. Eliminate postfork call. * globals.cc (my_wr_proc_pipe): Define/declare new variable. * pinfo.cc (pinfo::pending_rd_proc_pipe): Delete. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wait): Assume that rd_proc_pipe is set up correctly prior to call. (_pinfo::alert_parent): Replace "wr_proc_pipe" with "my_wr_proc_pipe". * pinfo.h (_pinfo::_wr_proc_pipe): Delete declaration. (_pinfo::set_rd_proc_pipe): Define new function. (pinfo::pending_rd_proc_pipe): Delete declaration. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wr_proc_pipe): Ditto. * sigproc.cc (child_info::child_info): Clear rd_proc_pipe and wr_proc_pipe. (child_info::cleanup): Close rd_proc_pipe and wr_proc_pipe if necessary. (child_info_fork::child_info_fork): Set forker_finished to NULL by default. (child_info_spawn::child_info_spawn): Use my_wr_proc_pipe rather than myself->wr_proc_pipe. (child_info::sync): Ditto. (child_info_spawn::cleanup): Call child_info::cleanup. * spawn.cc (child_info_spawn::worker): Remove call to myself.prefork(). Set wr_proc_pipe when execing or set up new rd_proc_pipe/wr_proc_pipe via child_info::prefork when spawning. Remove call to pinfo::postexec. Set rd_proc_pipe in child pinfo when spawning. Use my_wr_proc_pipe rather than myself->wr_proc_pipe. Remove call to postfork.
2012-03-20 23:07:30 +08:00
/* Set up a pipe which will track the life of a "pid" through
even after we've exec'ed. */
void
child_info::prefork (bool detached)
{
if (!detached)
{
if (!CreatePipe (&rd_proc_pipe, &wr_proc_pipe, &sec_none_nih, 16))
api_fatal ("prefork: couldn't create pipe process tracker, %E");
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset. (child_info::rd_proc_pipe): Declare new field. (child_info::wr_proc_pipe): Ditto. (child_info::prefork): Declare new function, derived from previous pinfo version. * dcrt0.cc (child_info_fork::handle_fork): Close previous wr_proc_pipe when appropriate and assign new one from passed-in child_info block. (child_info_spawn::handle_spawn): Assign our wr_proc_pipe handle from passed-in child_info block. * fork.cc (child_info::prefork): Define new function. (frok::child): Clear rd_proc_pipe and wr_proc_pipe so they will not be closed by the child_info destructor. (frok::parent): Use child_info prefork handling, outside of retry loop. Set rd_proc_pipe in child's pinfo after successful CreateProcess. Eliminate postfork call. * globals.cc (my_wr_proc_pipe): Define/declare new variable. * pinfo.cc (pinfo::pending_rd_proc_pipe): Delete. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wait): Assume that rd_proc_pipe is set up correctly prior to call. (_pinfo::alert_parent): Replace "wr_proc_pipe" with "my_wr_proc_pipe". * pinfo.h (_pinfo::_wr_proc_pipe): Delete declaration. (_pinfo::set_rd_proc_pipe): Define new function. (pinfo::pending_rd_proc_pipe): Delete declaration. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wr_proc_pipe): Ditto. * sigproc.cc (child_info::child_info): Clear rd_proc_pipe and wr_proc_pipe. (child_info::cleanup): Close rd_proc_pipe and wr_proc_pipe if necessary. (child_info_fork::child_info_fork): Set forker_finished to NULL by default. (child_info_spawn::child_info_spawn): Use my_wr_proc_pipe rather than myself->wr_proc_pipe. (child_info::sync): Ditto. (child_info_spawn::cleanup): Call child_info::cleanup. * spawn.cc (child_info_spawn::worker): Remove call to myself.prefork(). Set wr_proc_pipe when execing or set up new rd_proc_pipe/wr_proc_pipe via child_info::prefork when spawning. Remove call to pinfo::postexec. Set rd_proc_pipe in child pinfo when spawning. Use my_wr_proc_pipe rather than myself->wr_proc_pipe. Remove call to postfork.
2012-03-20 23:07:30 +08:00
if (!SetHandleInformation (wr_proc_pipe, HANDLE_FLAG_INHERIT,
HANDLE_FLAG_INHERIT))
api_fatal ("prefork: couldn't set process pipe(%p) inherit state, %E",
wr_proc_pipe);
ProtectHandle1 (rd_proc_pipe, rd_proc_pipe);
ProtectHandle1 (wr_proc_pipe, wr_proc_pipe);
}
}
int __stdcall
frok::child (volatile char * volatile here)
2000-02-18 03:38:33 +08:00
{
HANDLE& hParent = ch.parent;
extern void fixup_hooks_after_fork ();
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
extern void fixup_timers_after_fork ();
/* NOTE: Logically this belongs in dll_list::load_after_fork, but by
doing it here, before the first sync_with_parent, we can exploit
the existing retry mechanism in hopes of getting a more favorable
address space layout next time. */
dlls.reserve_space ();
sync_with_parent ("after longjmp", true);
debug_printf ("child is running. pid %d, ppid %d, stack here %p",
myself->pid, myself->ppid, __builtin_frame_address (0));
sigproc_printf ("hParent %p, load_dlls %d", hParent, load_dlls);
2000-02-18 03:38:33 +08:00
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
/* If we've played with the stack, stacksize != 0. That means that
fork() was invoked from other than the main thread. Make sure that
the threadinfo information is properly set up. */
if (fork_info->stackaddr)
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
{
_main_tls = &_my_tls;
_main_tls->init_thread (NULL, NULL);
_main_tls->local_clib = *_impure_ptr;
_impure_ptr = &_main_tls->local_clib;
}
set_cygwin_privileges (hProcToken);
clear_procimptoken ();
cygheap->user.reimpersonate ();
* cygheap.cc (cygheap_init): Accomodate set_process_privilege change. * cygheap.h (cygheap_user::curr_primary_token): New member. (cygheap_user::primary_token): New method. (cygheap_user::deimpersonate): Always revert to processes' impersonation token. (cygheap_user::reimpersonate): Set processes' or setuid token as necessary. (cygheap_user::has_impersonation_tokens): Look for curr_primary_token value. (cygheap_user::close_impersonation_tokens): Close curr_primary_token here if necessary. Don't reset token values to NO_IMPERSONATION since that's done in uinfo_init anyway. (init_cygheap::luid): New LUID array keeping privilege LUIDs. * cygtls.cc (_cygtls::init_thread): Call cygheap->user.reimpersonate. * dcrt0.cc (hProcToken): New global variable to keep process token. (hProcImpToken): Ditto for process impersonation token. (dll_crt0_0): Open process token here once. Duplicate to create hProcImpToken. (dll_crt0_1): Call set_cygwin_privileges. * environ.cc (allow_ntea): Drop duplicate declaration. (allow_smbntsec): Ditto. (set_traverse): Only set allow_traverse here. (environ_init): Ditto. * fhandler_disk_file.cc (fhandler_disk_file::fchmod): Drop call to enable_restore_privilege. (fhandler_disk_file::fchown): Ditto. (fhandler_disk_file::facl): Ditto. * fork.cc (fork_child): Move call to cygheap->user.reimpersonate after syn with parent. Call set_cygwin_privileges. * grp.cc (internal_getgroups): Use hProcImpToken instead of opening process token. * path.cc (fs_info::update): Bypass traverse checking when retrieving volume information using push/pop_thread_privileges. * registry.cc (load_registry_hive): Drop setting restore privilege since it's already set if available. * sec_helper.cc: Include cygtls.h. (cygpriv): Privilege string array. (privilege_luid): New function, evaluate LUID from cygpriv_idx. (privilege_luid_by_name): New function, evaluate LUID from privilege string. (privilege_name): New function, evaluate privilege string from cygpriv_idx. (set_privilege): New static function called by set_process_privilege and set_thread_privilege. Call privilege_luid to get privilege LUID. Fix bug in return value evaluation. Improve debug output. (set_cygwin_privileges): New function. (set_process_privilege): Remove. (enable_restore_privilege): Remove. * security.cc (allow_traverse): New global variable. (sys_privs): Change type to cygpriv_idx and store privilege indices instead of strings. (SYSTEM_PRIVILEGES_COUNT): Renamed from SYSTEM_PERMISSION_COUNT. (get_system_priv_list): Don't use numerical constant in malloc call. Use privilege_luid to get privilege LUIDs. (get_priv_list): Call privilege_luid_by_name to get LUIDs. Improve inner privilege LUID comparison loop. (create_token): Enable create token privilege using push/pop_self_privileges. Use hProcToken instead of opening process token. Use default DACL when duplicating token. (subauth): Enable tcb privilege using push/pop_self_privileges. Use sec_none instead of homw made security attributes when duplicating token. (check_file_access): Don't duplicate access token, use active impersonation token as is. * security.h (enum cygpriv_idx): New enumeration type enumerating possible privileges. (privilege_luid): Declare new function. (privilege_luid_by_name): Ditto. (privilege_name): Ditto. (allow_traverse): Declare. (set_privilege): Declare function. (set_process_privilege): Define as macro. (enable_restore_privilege): Remove declaration. (_push_thread_privilege): Define macro. (push_thread_privilege): Ditto. (pop_thread_privilege): Ditto. (pop_self_privilege): Ditto. * spawn.cc (spawn_guts): Use cygheap->user.primary_token instead of cygheap->user.token. * syscalls.cc (statvfs): Bypass traverse checking when retrieving volume information using push/pop_thread_privileges. Rearrange code to simplify push/pop bracketing. (seteuid32): Use hProcToken instead of opening process token. Call cygheap->user.deimpersonate instead of RevertToSelf. Create impersonation token from primary internal or external token. Set cygheap->user.curr_primary_token and cygheap->user.current_token privileges once here. Drop "failed" and "failed_ptok" labels. Drop setting DefaultDacl of process token. (setegid32): Use hProcToken and hProcImpToken instead of opening process token. Always reimpersonate afterwards. * uinfo.cc (cygheap_user::init): Use hProcToken instead of opening process token. (internal_getlogin): Ditto. Set hProcImpToken, too. (uinfo_init): Initialize cygheap->user.curr_primary_token. * winsup.h (hProcToken): Declare. (hProcImpToken): Declare.
2005-04-03 21:06:43 +08:00
#ifdef DEBUGGING
if (GetEnvironmentVariableA ("FORKDEBUG", NULL, 0))
try_to_debug ();
char buf[80];
/* This is useful for debugging fork problems. Use gdb to attach to
the pid reported here. */
if (GetEnvironmentVariableA ("CYGWIN_FORK_SLEEP", buf, sizeof (buf)))
{
small_printf ("Sleeping %d after fork, pid %u\n", atoi (buf), GetCurrentProcessId ());
Sleep (atoi (buf));
}
#endif
2000-02-18 03:38:33 +08:00
MALLOC_CHECK;
2000-02-18 03:38:33 +08:00
/* Incredible but true: If we use sockets and SYSV IPC shared memory,
there's a good chance that a duplicated socket in the child occupies
memory which is needed to duplicate shared memory from the parent
process, if the shared memory hasn't been duplicated already.
The same goes very likely for "normal" mmap shared memory, too, but
with SYSV IPC it was the first time observed. So, *never* fixup
fdtab before fixing up shared memory. */
if (fixup_shms_after_fork ())
api_fatal ("recreate_shm areas after fork failed");
MALLOC_CHECK;
/* If we haven't dynamically loaded any dlls, just signal
the parent. Otherwise, load all the dlls, tell the parent
that we're done, and wait for the parent to fill in the.
loaded dlls' data/bss. */
if (!load_dlls)
{
cygheap->fdtab.fixup_after_fork (hParent);
sync_with_parent ("performed fork fixup", false);
}
else
2000-02-18 03:38:33 +08:00
{
dlls.load_after_fork (hParent);
cygheap->fdtab.fixup_after_fork (hParent);
sync_with_parent ("loaded dlls", true);
2000-02-18 03:38:33 +08:00
}
* autoload.cc: Call _api_fatal in asm. * child_info.h: Redefine CURR_CHILD_INFO_MAGIC. (child_info_fork::abort): Rename from handle_failure. Change arguments. * cygtls.h (_local_storage::ttybuf): New field. * dcrt0.cc (vapi_fatal): Split api_fatal. Add "in forked process" to message when appropriate. (api_fatal): Use vapi_fatal. * devices.h: Make multiple inclusion safe. (fh_devices): Add FH_CONS* stuff. Reorder slightly. (device): Eliminate anonymous union. Add more ways to access minor/major. (device::setunit): Accommodate no-longer-anonymous union. (device::is_fs): Ditto. (device::is_fs_special): Ditto. (device::major): New function. (device::minor): Ditto. (device::is_device): New function. (device::not_device): Ditto. (device::operator int): New operator. (device::operator fh_devices): Ditto. (device::operator bool): Ditto. (device::operator DWORD): Ditto. (device::operator =): Ditto. (isproc_dev): New function. (isprocsys_dev): Ditto. (iscons_dev): Ditto. (istty_slave_dev): Ditto. * devices.in: Add new "/dev/cons*" strings. Accommodate no-longer-anonymous union throughout. (BRACK): Use more precise method for initialization. * devices.cc: Regenerate. * dtable.cc (dtable::stdio_init): Use get_cttyp instead of get_tty. (dtable::find_archetype): Use new DWORD operator in device to test archetypes. (dtable::init_std_file_from_handle): Use different method to initialize 'dev'. Adapt to different ctty handling and accommodate /dev/cons*. (fh_alloc): Accommodate no-longer-anonymous union. Adapt to new /dev/cons*. (build_fh_pc): Make debugging output more useful. * exceptions.cc (ctrl_c_handler): Use get_cttyp instead of get_tty. * external.cc (fillout_pinfo): Accommodate new cons* stuff. * fhandler.cc (fhandler_base::read): Eliminate is_slow() test. * fhandler.h (fhandler_base::*): Adapt to changes in device.h. (fhandler_*::is_slow): Delete. ( fhandler_proc::get_proc_fhandler): Return fh_devices type. * fhandler_console.cc (open_shared_console): New function. (console_unit): New class. (console_unit::console_unit): New constructor. (enum_windows): New function. Declare as friend to console_unit. (fhandler_console::set_unit): New function. (fhandler_console::get_tty_stuff): Call set_unit to set the unit number and determine if initialization is needed. Eliminate flags parameter. (tty_list::get_cttyp): Rename (sorta) from get_tty. Return pointer to correct tty_min. (fhandler_console::open): Adapt to elimination of argument to get_tty_stuff. (fhandler_console::output_tcsetattr): Properly detect error condition. (fhandler_console::fixup_after_fork_exec): Adapt to get_tty_stuff() setting tc automatically. * fhandler_proc.cc: Use FH_BAD rather than 0 throughout where using fh_devices enum. (fhandler_proc::get_proc_fhandler): Return fh_devices. Adapt to devices.h changes. * fhandler_process.cc: Adapt to devices.h changes. Use FH_BAD rather than 0 throughout where using fh_devices enum. * fhandler_procnet.cc: Ditto. * fhandler_procsys.cc: Ditto. * fhandler_procsysvipc.cc: Ditto. * fhandler_tape.cc (fhandler_dev_tape::fhandler_dev_tape): Ditto. * fhandler_termios.cc (handler_termios::bg_check): Use tc->ttyname() rather than assuming that we can construct a tty. * fhandler_tty.cc (fhandler_tty_master::fhandler_tty_master): Just return get_minor() of dev. (fhandler_pty_master::process_slave_output): Add slightly more debugging info. (fhandler_tty_slave::fhandler_tty_slave): Change name from ntty to unit. (fhandler_pty_master::open): Ditto. (fhandler_tty_slave::ioctl): Adapt to change which causes ctty to represent a complete device. (fhandler_tty_master::init_console): Add debugging for failure path. (fhandler_pty_master::setup): Use get_unit() to retrieve unit number rather than relying on raw ntty. (fhandler_pty_master::setup): Ditto. * fhandler_virtual.h (virt_tab_t): Redefine fhandler as fh_devices. * fork.cc: Remove obsolete vfork stuff. (frok::child): Don't assume that a ctty == 0 is valid. * mount.cc (mount_info::conv_to_win32_path): Adapt to device struct changes. (mount_info::conv_to_win32_path): Ditto. * path.cc (path_conv::check): Retrive major/minor numbers via a method rather than accessing them directly from device. Rely on dev operators to set/retrieve device information as required by device struct change. * path.h (isproc_dev): Move to devices.h. (isprocsys_dev): Ditto. (isvirtual_dev): Ditto. (path_conv:{isdevice,isfifo,isspecial,iscygdrive,issocket,get_devn,get_unitn}): Use device methods to access/manipulate devices. * pinfo.cc (pinfo::exit): Don't assume that ctty == 0 is valid. Use iscons_dev to determine if a device is a console. (_pinfo::_ctty): Use device::parse to generate tty/cons name. (_pinfo::set_ctty): Don't assume that ctty == 0 is valid. Remove redundant info from debugging. * shared.cc (offsets): Remove console offset. * shared_info.h (shared_locations): Ditto. * syscalls.cc (umask): Use device methods to manipulate device information. (ctermid): Use device::parse to generate term device name. * tlsoffsets.h: Regenerate. * tty.cc (ttyslot): Return minor number of ctty since ctty now represents a full device. (tty::create_master): Set ctty to a complete device. (tty_list::attach): Rework to detect new /dev/cons* stuff. (tty_list::terminate): Adapt to changes to ctty. (tty_list::init): Adapt to change to setntty - pass in device major number. (tty::exists): Use get_unit() to retrive tty unit number. (tty::open_mutex): Ditto. (tty::open_inuse): Ditto. (tty::create_inuse): Ditto. (tty::get_event): Ditto. (tty_min::ttyname): Define new function. * tty.h (tty_min::ntty): Redefine as fh_devices. (tty::exists): Use get_unit() to retrive tty unit number. (tty::open_mutex): Ditto. (tty::open_inuse): Ditto. (tty::create_inuse): Ditto. (tty::get_event): Ditto. (tty_min::ttyname): Declare new function. (tty::getntty): Declare as const. (tty_list::operator []): Assure that only minor part of argument is used. * dll_init.cc (dll_list::alloc): Detect mismatch of data segments early issuing an explicit error message if necessary. * heap.cc (heap_init): Adapt to changes from fork->handle_failure to fork->abort. * pinfo.h (EXITCODE_FORK_FAILED): New enum. (from Ryan Johnson) * sigproc.cc (child_info_fork::abort): Rename from handle_failure. Change arguments to allow passing in a printf-like message. * winsup.h (api_fatal): Delete macro definition. (api_fatal): Redefine from __api_fatal. (vapi_fatal): Declare new function. * include/sys/strace.h (strace_vprintf): Define new macro. * ntdll.h (_SYSTEM_INFORMATION_CLASS): Add SystemHandleInformation.
2011-05-29 02:17:09 +08:00
init_console_handler (myself->ctty > 0);
ForceCloseHandle1 (fork_info->forker_finished, forker_finished);
pthread::atforkchild ();
* cygwin/include/signal.h: Add copyright notice. * cygwin.din: Make clock SIGFE. Add clock_gettime, sigwaitinfo, timer_create, timer_delete, timer_settime. * include/cygwin/version.h: Reflect above additions. * fork.cc (fork_child): Call fixup_timers_after_fork. * signal.cc (sigwait): Remove unused variable. * timer.cc: New file. (clock_gettime): Define new function. (timer_tracker): Define new struct used by timer functions. (timer_tracker::timer_tracker): New function. (to_us): New function. (timer_thread): New function. (timer_tracker::settime): New function. (timer_create): New function. (timer_settime): New function. (timer_delete): New function. (fixup_timers_after_fork): New function. * cygthread.cc: Bump thread count. * signal.cc (sigwaitinfo): Define new function. (sigwait): Redefine based on sigwaitinfo. * include/cygwin/signal.h (sigwaitinfo): Declare. (sigwait): Ditto. * dtable.cc (dtable::vfork_parent_restore): Avoid double close of ctty when ctty == ctty_on_hold. * cygtls.h (_threadinfo::threadkill): New element. (_threadinfo::set_threadkill): Declare new function. (_threadinfo::reset_threadkill): Declare new function. * dcrt0.cc (dcrt0_1): Call here so that it will be possible to attach to running process with #(*& Windows Me/9x. (initial_env): Try to initialize strace if uninitialized. * gendef: Don't zero signal if threadkill is set since that will happen in the called function. * signal.cc (sigwait): Ensure cleanup in error conditions. * sigproc.cc (sig_send): Clear packet mask storage. (wait_subproc): Fill in child exit code in siginfo_t structure. * thread.cc (pthread_kill): Set threadkill flag. * tlsoffsets.h: Regenerate. Throughout, use siginfo_t to fill out all signal information for "kernel" signals. * cygtls.h (_threadinfo::set_siginfo): Declare new function. * cygtls.cc (_threadinfo::set_siginfo): Define new function. * dcrt0.cc (do_exit): Accommodate siginfo_t considerations. * exceptions.cc (handle_exceptions): Ditto. (sig_handle_tty_stop): Ditto. (ctrl_c_handler): Use killsys() to send signal. (sigpacket::process): Rename from sig_handle. Use siginfo_t field from sigpacket for everything. (tty_min::kill_pgrp): Accommodate siginfo_t considerations. (fhandler_termios::bg_check): Ditto. * fhandler_tty.cc (fhandler_tty_slave::ioctl): Use killsys() to send signal. * signal.cc (kill_worker): Rewrite to use siginfo_t second argument. (kill_pgrp): Ditto. (kill0): Define new function pulled from kill(). (kill): Rewrite as frontend to kill0. (killsys): Define new function. * sigproc.cc (sigelem): Eliminate. (sigpacket): Move to sigproc.h. Subsume sigelem. (pending_signals): Use sigpacket rather than sigelem for everything. (sig_clear): Ditto. (wait_sig): Ditto. (sig_send): Rewrite to use siginfo_t argument. (sig_send): New function wratpper to sig_send with siginfo_t argument. (wait_subproc): Accommodate siginfo_t considerations. * thread.cc (pthread_kill): Ditto. * sigproc.h (sigpacket): Move here. (sigpacket::process): Declare "new" function. (sig_handle): Eliminate declaration. (sig_send): Declare with new paramaters. (killsys): Declare new function. (kill_pgrp): Declare. * winsup.h: Move some signal-specific stuff to sigproc.h. * include/cygwin/signal.h: Tweak some siginfo_t stuff.
2004-01-19 13:46:54 +08:00
fixup_timers_after_fork ();
* Makefile.in: Remove some obsolete stuff. * dcrt0.cc (dll_crt0_1): Call signal_fixup_after_exec where appropriate. Set myself->uid from parent version. Just use ThreadItem Init method. Close or store hexec_proc as appropriate. (_dll_crt0): Store user_data->forkee here so that proper tests can be made subsequently. (do_exit): Remove hExeced stuff. * environ.cc (environ_init): Accept environ count as well as environ pointer. * environ.h: Reflect above change. * pinfo.cc (pinfo_init): Ditto. Accept environ count. (fixup_in_spawned_child): Remove. * spawn.cc (spawn_guts): Move signal code to dll_crt0_1. Don't suspend execing process since it is no longer necessary. Store envc. * exceptions.cc (signal_fixup_after_exec): New function. (call_handler): Remove hExeced test. * child_info.h (cygheap_exec_info): Store envc as well as envp. (child_info_spawn): Store hexec_proc so that it can be closed in child. * path.cc (normalize_posix_path): Avoid intermediate use of temporary cwd buf. (normalize_win32_path): Ditto. (cwdstuff::get_initial): Always set lock. * sigproc.h: Remove hExeced. * strace.cc (strace::vsprntf): Modify to accomodate for lack of hExeced. * thread.cc (MTinterface::Init): Merge Init1 and ClearReent into this method. (MTinterface::Init1): Eliminate. (MTinterface::ClearReent): Eliminate. * thread.h: Reflect above changes. * include/sys/strace.h (strace): Make microseconds() public. Make various functions 'regparm', throughout. * pinfo.h (_pinfo): Inline simple signal manipulation functions. Requires inclusion of thread.h which was removed from .cc files, where appropriate. throughout. * pinfo.cc: Eliminate signal manipulation functions. (_pinfo::exit): Calculate total rusage for exiting process here. * cygheap.cc (size2bucket): Eliminate. (init_buckets): Ditto. (_cmalloc): Calculate size and bits in a loop rather than going through a function call. (_crealloc): Use stored array index to calculate allocated size. * spawn.cc (spawn_guts): Use _pinfo exit method to exit, calculating cpu usage.
2000-10-17 07:55:58 +08:00
cygbench ("fork-child");
ld_preload ();
fixup_hooks_after_fork ();
_my_tls.fixup_after_fork ();
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset. (child_info::rd_proc_pipe): Declare new field. (child_info::wr_proc_pipe): Ditto. (child_info::prefork): Declare new function, derived from previous pinfo version. * dcrt0.cc (child_info_fork::handle_fork): Close previous wr_proc_pipe when appropriate and assign new one from passed-in child_info block. (child_info_spawn::handle_spawn): Assign our wr_proc_pipe handle from passed-in child_info block. * fork.cc (child_info::prefork): Define new function. (frok::child): Clear rd_proc_pipe and wr_proc_pipe so they will not be closed by the child_info destructor. (frok::parent): Use child_info prefork handling, outside of retry loop. Set rd_proc_pipe in child's pinfo after successful CreateProcess. Eliminate postfork call. * globals.cc (my_wr_proc_pipe): Define/declare new variable. * pinfo.cc (pinfo::pending_rd_proc_pipe): Delete. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wait): Assume that rd_proc_pipe is set up correctly prior to call. (_pinfo::alert_parent): Replace "wr_proc_pipe" with "my_wr_proc_pipe". * pinfo.h (_pinfo::_wr_proc_pipe): Delete declaration. (_pinfo::set_rd_proc_pipe): Define new function. (pinfo::pending_rd_proc_pipe): Delete declaration. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wr_proc_pipe): Ditto. * sigproc.cc (child_info::child_info): Clear rd_proc_pipe and wr_proc_pipe. (child_info::cleanup): Close rd_proc_pipe and wr_proc_pipe if necessary. (child_info_fork::child_info_fork): Set forker_finished to NULL by default. (child_info_spawn::child_info_spawn): Use my_wr_proc_pipe rather than myself->wr_proc_pipe. (child_info::sync): Ditto. (child_info_spawn::cleanup): Call child_info::cleanup. * spawn.cc (child_info_spawn::worker): Remove call to myself.prefork(). Set wr_proc_pipe when execing or set up new rd_proc_pipe/wr_proc_pipe via child_info::prefork when spawning. Remove call to pinfo::postexec. Set rd_proc_pipe in child pinfo when spawning. Use my_wr_proc_pipe rather than myself->wr_proc_pipe. Remove call to postfork.
2012-03-20 23:07:30 +08:00
/* Clear this or the destructor will close them. In the case of
rd_proc_pipe that would be an invalid handle. In the case of
wr_proc_pipe it would be == my_wr_proc_pipe. Both would be bad. */
ch.rd_proc_pipe = ch.wr_proc_pipe = NULL;
cygwin_finished_initializing = true;
return 0;
}
2000-02-18 03:38:33 +08:00
#define NO_SLOW_PID_REUSE
#ifndef NO_SLOW_PID_REUSE
static void
slow_pid_reuse (HANDLE h)
{
static NO_COPY HANDLE last_fork_procs[NPIDS_HELD];
static NO_COPY unsigned nfork_procs;
if (nfork_procs >= (sizeof (last_fork_procs) / sizeof (last_fork_procs [0])))
nfork_procs = 0;
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
/* Keep a list of handles to child processes sitting around to prevent
Windows from reusing the same pid n times in a row. Having the same pids
close in succesion confuses bash. Keeping a handle open will stop
windows from reusing the same pid. */
if (last_fork_procs[nfork_procs])
ForceCloseHandle1 (last_fork_procs[nfork_procs], fork_stupidity);
if (DuplicateHandle (GetCurrentProcess (), h,
GetCurrentProcess (), &last_fork_procs[nfork_procs],
0, FALSE, DUPLICATE_SAME_ACCESS))
ProtectHandle1 (last_fork_procs[nfork_procs], fork_stupidity);
else
{
last_fork_procs[nfork_procs] = NULL;
system_printf ("couldn't create last_fork_proc, %E");
}
nfork_procs++;
}
#endif
int __stdcall
frok::parent (volatile char * volatile stack_here)
{
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
HANDLE forker_finished;
DWORD rc;
child_pid = -1;
this_errno = 0;
bool fix_impersonation = false;
pinfo child;
2000-02-18 03:38:33 +08:00
int c_flags = GetPriorityClass (GetCurrentProcess ());
debug_printf ("priority class %d", c_flags);
/* Per MSDN, this must be specified even if lpEnvironment is set to NULL,
otherwise UNICODE characters in the parent environment are not copied
correctly to the child. Omitting it may scramble %PATH% on non-English
systems. */
c_flags |= CREATE_UNICODE_ENVIRONMENT;
errmsg = NULL;
hchild = NULL;
/* If we don't have a console, then don't create a console for the
child either. */
HANDLE console_handle = CreateFile ("CONOUT$", GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
&sec_none_nih, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, NULL);
if (console_handle != INVALID_HANDLE_VALUE)
CloseHandle (console_handle);
else
c_flags |= DETACHED_PROCESS;
2000-02-18 03:38:33 +08:00
Reintegrate socket duplication via WSADuplicateSocket/WSASocket. * autoload.cc (WSADuplicateSocketW): Define. (WSASocketW): Define. * dtable.cc (dtable::release): Call dec_need_fixup_before if necessary. (dtable::fixup_before_fork): New function. (dtable::fixup_before_exec): New function. * dtable.h (class dtable): Add member cnt_need_fixup_before. Add declarations for above new functions. (dtable::dec_need_fixup_before): New inline method. (dtable::inc_need_fixup_before): New inline method. (dtable::need_fixup_before): New inline method. * fhandler.h (fhandler_base::fixup_before_fork_exec): New virtual method. (fhandler_base::need_fixup_before): New virtual method. (class fhandler_socket): Add member prot_info_ptr. (fhandler_socket::init_fixup_before): Declare. (fhandler_socket::need_fixup_before): New inline method. (fhandler_socket::fixup_before_fork_exec): Declare. (fhandler_socket::fixup_after_exec): Declare. * fhandler_socket.cc (fhandler_socket::fhandler_socket): Initialize prot_info_ptr to NULL. (fhandler_socket::~fhandler_socket): Free prot_info_ptr conditionally. (fhandler_socket::init_fixup_before): New method. (fhandler_socket::fixup_before_fork_exec): Ditto. (fhandler_socket::fixup_after_fork): Use WSASocketW to duplicate socket if necessary. (fhandler_socket::fixup_after_exec): New method. (fhandler_socket::dup): Use fixup_before_fork_exec/fixup_after_fork to duplicate socket if necessary. * fork.cc (frok::parent): Start child suspended if some fhandler needs fixup before fork. If so, call dtable::fixup_before_fork after CreateProcess and resume child. * net.cc (fdsock): Try to find out if socket needs fixup before and initialize socket accordingly. Add HUGE comment to explain what happens and why. * spawn.cc (spawn_guts): Start child suspended if some fhandler needs fixup before exec. If so, call dtable::fixup_before_exec after CreateProcess.
2009-11-17 18:43:01 +08:00
/* Some file types (currently only sockets) need extra effort in the
parent after CreateProcess and before copying the datastructures
to the child. So we have to start the child in suspend state,
unfortunately, to avoid a race condition. */
if (cygheap->fdtab.need_fixup_before ())
c_flags |= CREATE_SUSPENDED;
/* Remember if we need to load dynamically linked dlls.
We do this here so that this information will be available
in the parent and, when the stack is copied, in the child. */
load_dlls = dlls.reload_on_fork && dlls.loaded_dlls;
2000-02-18 03:38:33 +08:00
forker_finished = CreateEvent (&sec_all, FALSE, FALSE, NULL);
if (forker_finished == NULL)
{
this_errno = geterrno_from_win_error ();
error ("unable to allocate forker_finished event");
return -1;
}
2000-02-18 03:38:33 +08:00
* debug.h (handle_list): Move here from debug.cc. Add "inherit" flag functionality. * cygheap.cc (init_cheap): Move cygheap_max calculation to _csbrk. (_csbrk): Reorganize to not assume first allocation is <= 1 page. (cygheap_setup_for_child): Mark protected handle as inheritable. * cygheap.h (cygheap_debug): New struct. (init_cygheap): Add new structure when debugging. * dcrt0.cc (dll_crt0_1): Remove call to debug_init. Close ppid_handle here, if appropriate. Don't protect subproc_ready, since it is already protected in the parent. Call memory_init prior to ProtectHandle to ensure that cygheap is set up. Call debug_fixup_after_fork_exec when appropriate. (_dll_crt0): Don't close ppid_handle here. * debug.cc: Use cygheap debug structure rather than static elements throughout. (add_handle): Don't issue a warning if attempt to protect handle in exactly the same way from exactly the same place. Add pid info to warning output. Accept additional argument controlling whether handle is to be inherited. Add pid to stored information. (debug_fixup_after_fork_exec): Renamed from debug_fixup_after_fork. Reorganize to avoid erroneously skipping handles. (mark_closed): Add pid info to warning output. (setclexec): Rename from setclexec_pid. * fhandler.cc (fhandler_base::get_default_fmode): Minor reorg. (fhandler_base::fstat): Add debugging output. (fhandler_base::set_inheritance): Call setclexec rather than setclexec_pid. (fhandler_base::fork_fixup): Ditto. * fhandler_console.cc (get_tty_stuff): Mark protected handle as inheritable. * fhandler_tty.cc (fhandler_tty_slave::open): Ditto. * tty.cc (tty::make_pipes): Ditto. (tty::common_init): Ditto. * fork.cc (fork_parent): Ditto. (fork_child): Close protected handles with correct name. Remove debug_fixup_after_fork call. * fhandler_socket.cc (fhandler_socket::create_secret_event): Mark protected handle as inheritable/non-inheritable, as appropriate. * shared.cc (memory_init): Mark protected handle as inheritable. Call debug_init here. * sigproc.cc (wait_sig): Close protected handle with correct name. * spawn.cc (spawn_guts): Rename spr to subproc_ready and mark it as inheritable. * exceptions.cc (debugger_command): Try to run dumper.exe, if found. * syscalls.cc (fstat64): Don't follow symlinks for path_conv lookup since path is already resolved.
2002-07-14 04:00:27 +08:00
ProtectHandleINH (forker_finished);
2000-02-18 03:38:33 +08:00
ch.forker_finished = forker_finished;
2000-02-18 03:38:33 +08:00
ch.stackbottom = _tlsbase;
ch.stackaddr = NtCurrentTeb ()->DeallocationStack;
if (!ch.stackaddr)
{
/* If DeallocationStack is NULL, we're running on an application-provided
stack. If so, the entire stack is committed anyway and StackLimit
points to the allocation address of the stack. Mark in guardsize that
we must not set up guard pages. */
ch.stackaddr = ch.stacktop = _tlstop;
ch.guardsize = (size_t) -1;
}
else
{
/* Otherwise we're running on a system-allocated stack. Since stack_here
is the address of the stack pointer we start the child with anyway, we
can set ch.stacktop to this value rounded down to page size. The
child will not need the rest of the stack anyway. Guardsize depends
on whether we're running on a pthread or not. If pthread, we fetch
the guardpage size from the pthread attribs, otherwise we use the
system default. */
ch.stacktop = (void *) ((uintptr_t) stack_here & ~wincap.page_size ());
ch.guardsize = (&_my_tls != _main_tls && _my_tls.tid)
? _my_tls.tid->attr.guardsize
: wincap.def_guard_page_size ();
}
debug_printf ("stack - bottom %p, top %p, addr %p, guardsize %ly",
ch.stackbottom, ch.stacktop, ch.stackaddr, ch.guardsize);
2000-02-18 03:38:33 +08:00
PROCESS_INFORMATION pi;
* Makefile.in (DLL_OFILES): Add tls_pbuf.o. * autoload.cc (CreateDesktopW): Replace CreateDesktopA. (CreateWindowStationW): Replace CreateWindowStationA. (GetUserObjectInformationW): Replace GetUserObjectInformationA. * cygheap.h (cwdstuff::get): Assume default buffer size NT_MAX_PATH. * cygtls.cc (_cygtls::remove): Free temporary TLS path buffers. * cygtls.h (TP_NUM_C_BUFS): Define. (TP_NUM_W_BUFS): Define. (class tls_pathbuf): New class to store pointers to thread local temporary path buffers. (_local_storage::pathbufs): New member. * environ.cc (win_env::add_cache): Use temporary TLS path buffer instead of stack based buffer. (posify): Get temporary outenv buffer from calling function. (environ_init): Create temporary TLS path buffer for posify. (build_env): Create Windows environment block as WCHAR buffer. * environ.h (build_env): Change declaration accordingly. * external.cc (sync_winenv): Accommodate build_env change. * fhandler_console.cc (fhandler_console::need_invisible): Use GetUserObjectInformationW and CreateWindowStationW. * fhandler_process.cc (format_process_maps): Use temporary TLS path buffer instead of stack based buffer. * fork.cc (frok::parent): Convert to use CreateProcessW. * path.cc: Throughout use temporary TLS path buffers instead of stack based buffer. Replace checks for CYG_MAX_PATH by checks for NT_MAX_PATH. (getfileattr): New function to replace GetFileAttributesA. (normalize_win32_path): Remove Win32 and NT long path prefixes. (getwd): Assume PATH_MAX + 1 buffer per SUSv3. * path.h (class path_conv): Set path buffer to size NT_MAX_PATH. (iswdrive): Define. * pinfo.cc (commune_process): Use temporary TLS path buffer instead of stack based buffer. * registry.cc (get_registry_hive_path): Ditto. (load_registry_hive): Ditto. * spawn.cc (spawn_guts): Convert to use CreateProcessW and CreateProcessAsUserW. (av::fixup): Open/close file using NtOpenFile/NtClose. * syscalls.cc (mknod_worker): Allow PATH_MAX file name. (mknod32): Ditto. (getusershell): Ditto. * tls_pbuf.cc: New file implementing tls_pathbuf and tmp_pathbuf methods. * tls_pbuf.h: New header for files using tmp_pathbuf. * tlsoffsets.h: Regenerate. * winsup.h (NT_MAX_PATH): Define as 32767 to avoid USHORT overflow.
2008-03-07 19:24:51 +08:00
STARTUPINFOW si;
memset (&si, 0, sizeof (si));
* Makefile.in (DLL_OFILES): Add tls_pbuf.o. * autoload.cc (CreateDesktopW): Replace CreateDesktopA. (CreateWindowStationW): Replace CreateWindowStationA. (GetUserObjectInformationW): Replace GetUserObjectInformationA. * cygheap.h (cwdstuff::get): Assume default buffer size NT_MAX_PATH. * cygtls.cc (_cygtls::remove): Free temporary TLS path buffers. * cygtls.h (TP_NUM_C_BUFS): Define. (TP_NUM_W_BUFS): Define. (class tls_pathbuf): New class to store pointers to thread local temporary path buffers. (_local_storage::pathbufs): New member. * environ.cc (win_env::add_cache): Use temporary TLS path buffer instead of stack based buffer. (posify): Get temporary outenv buffer from calling function. (environ_init): Create temporary TLS path buffer for posify. (build_env): Create Windows environment block as WCHAR buffer. * environ.h (build_env): Change declaration accordingly. * external.cc (sync_winenv): Accommodate build_env change. * fhandler_console.cc (fhandler_console::need_invisible): Use GetUserObjectInformationW and CreateWindowStationW. * fhandler_process.cc (format_process_maps): Use temporary TLS path buffer instead of stack based buffer. * fork.cc (frok::parent): Convert to use CreateProcessW. * path.cc: Throughout use temporary TLS path buffers instead of stack based buffer. Replace checks for CYG_MAX_PATH by checks for NT_MAX_PATH. (getfileattr): New function to replace GetFileAttributesA. (normalize_win32_path): Remove Win32 and NT long path prefixes. (getwd): Assume PATH_MAX + 1 buffer per SUSv3. * path.h (class path_conv): Set path buffer to size NT_MAX_PATH. (iswdrive): Define. * pinfo.cc (commune_process): Use temporary TLS path buffer instead of stack based buffer. * registry.cc (get_registry_hive_path): Ditto. (load_registry_hive): Ditto. * spawn.cc (spawn_guts): Convert to use CreateProcessW and CreateProcessAsUserW. (av::fixup): Open/close file using NtOpenFile/NtClose. * syscalls.cc (mknod_worker): Allow PATH_MAX file name. (mknod32): Ditto. (getusershell): Ditto. * tls_pbuf.cc: New file implementing tls_pathbuf and tmp_pathbuf methods. * tls_pbuf.h: New header for files using tmp_pathbuf. * tlsoffsets.h: Regenerate. * winsup.h (NT_MAX_PATH): Define as 32767 to avoid USHORT overflow.
2008-03-07 19:24:51 +08:00
si.cb = sizeof si;
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
si.lpReserved2 = (LPBYTE) &ch;
si.cbReserved2 = sizeof (ch);
2000-02-18 03:38:33 +08:00
2013-04-23 17:44:36 +08:00
syscall_printf ("CreateProcessW (%W, %W, 0, 0, 1, %y, 0, 0, %p, %p)",
myself->progname, myself->progname, c_flags, &si, &pi);
bool locked = __malloc_lock ();
/* Remove impersonation */
cygheap->user.deimpersonate ();
fix_impersonation = true;
ch.refresh_cygheap ();
* child_info.h (CURR_CHILD_INFO_MAGIC): Reset. (child_info::rd_proc_pipe): Declare new field. (child_info::wr_proc_pipe): Ditto. (child_info::prefork): Declare new function, derived from previous pinfo version. * dcrt0.cc (child_info_fork::handle_fork): Close previous wr_proc_pipe when appropriate and assign new one from passed-in child_info block. (child_info_spawn::handle_spawn): Assign our wr_proc_pipe handle from passed-in child_info block. * fork.cc (child_info::prefork): Define new function. (frok::child): Clear rd_proc_pipe and wr_proc_pipe so they will not be closed by the child_info destructor. (frok::parent): Use child_info prefork handling, outside of retry loop. Set rd_proc_pipe in child's pinfo after successful CreateProcess. Eliminate postfork call. * globals.cc (my_wr_proc_pipe): Define/declare new variable. * pinfo.cc (pinfo::pending_rd_proc_pipe): Delete. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wait): Assume that rd_proc_pipe is set up correctly prior to call. (_pinfo::alert_parent): Replace "wr_proc_pipe" with "my_wr_proc_pipe". * pinfo.h (_pinfo::_wr_proc_pipe): Delete declaration. (_pinfo::set_rd_proc_pipe): Define new function. (pinfo::pending_rd_proc_pipe): Delete declaration. (pinfo::pending_wr_proc_pipe): Ditto. (pinfo::prefork): Ditto. (pinfo::postfork): Ditto. (pinfo::postexec): Ditto. (pinfo::wr_proc_pipe): Ditto. * sigproc.cc (child_info::child_info): Clear rd_proc_pipe and wr_proc_pipe. (child_info::cleanup): Close rd_proc_pipe and wr_proc_pipe if necessary. (child_info_fork::child_info_fork): Set forker_finished to NULL by default. (child_info_spawn::child_info_spawn): Use my_wr_proc_pipe rather than myself->wr_proc_pipe. (child_info::sync): Ditto. (child_info_spawn::cleanup): Call child_info::cleanup. * spawn.cc (child_info_spawn::worker): Remove call to myself.prefork(). Set wr_proc_pipe when execing or set up new rd_proc_pipe/wr_proc_pipe via child_info::prefork when spawning. Remove call to pinfo::postexec. Set rd_proc_pipe in child pinfo when spawning. Use my_wr_proc_pipe rather than myself->wr_proc_pipe. Remove call to postfork.
2012-03-20 23:07:30 +08:00
ch.prefork (); /* set up process tracking pipes. */
2000-02-18 03:38:33 +08:00
while (1)
{
hchild = NULL;
rc = CreateProcessW (myself->progname, /* image to run */
GetCommandLineW (), /* Take same space for command
line as in parent to make
sure child stack is allocated
in the same memory location
as in parent. */
* Makefile.in (DLL_OFILES): Add tls_pbuf.o. * autoload.cc (CreateDesktopW): Replace CreateDesktopA. (CreateWindowStationW): Replace CreateWindowStationA. (GetUserObjectInformationW): Replace GetUserObjectInformationA. * cygheap.h (cwdstuff::get): Assume default buffer size NT_MAX_PATH. * cygtls.cc (_cygtls::remove): Free temporary TLS path buffers. * cygtls.h (TP_NUM_C_BUFS): Define. (TP_NUM_W_BUFS): Define. (class tls_pathbuf): New class to store pointers to thread local temporary path buffers. (_local_storage::pathbufs): New member. * environ.cc (win_env::add_cache): Use temporary TLS path buffer instead of stack based buffer. (posify): Get temporary outenv buffer from calling function. (environ_init): Create temporary TLS path buffer for posify. (build_env): Create Windows environment block as WCHAR buffer. * environ.h (build_env): Change declaration accordingly. * external.cc (sync_winenv): Accommodate build_env change. * fhandler_console.cc (fhandler_console::need_invisible): Use GetUserObjectInformationW and CreateWindowStationW. * fhandler_process.cc (format_process_maps): Use temporary TLS path buffer instead of stack based buffer. * fork.cc (frok::parent): Convert to use CreateProcessW. * path.cc: Throughout use temporary TLS path buffers instead of stack based buffer. Replace checks for CYG_MAX_PATH by checks for NT_MAX_PATH. (getfileattr): New function to replace GetFileAttributesA. (normalize_win32_path): Remove Win32 and NT long path prefixes. (getwd): Assume PATH_MAX + 1 buffer per SUSv3. * path.h (class path_conv): Set path buffer to size NT_MAX_PATH. (iswdrive): Define. * pinfo.cc (commune_process): Use temporary TLS path buffer instead of stack based buffer. * registry.cc (get_registry_hive_path): Ditto. (load_registry_hive): Ditto. * spawn.cc (spawn_guts): Convert to use CreateProcessW and CreateProcessAsUserW. (av::fixup): Open/close file using NtOpenFile/NtClose. * syscalls.cc (mknod_worker): Allow PATH_MAX file name. (mknod32): Ditto. (getusershell): Ditto. * tls_pbuf.cc: New file implementing tls_pathbuf and tmp_pathbuf methods. * tls_pbuf.h: New header for files using tmp_pathbuf. * tlsoffsets.h: Regenerate. * winsup.h (NT_MAX_PATH): Define as 32767 to avoid USHORT overflow.
2008-03-07 19:24:51 +08:00
&sec_none_nih,
&sec_none_nih,
TRUE, /* inherit handles from parent */
* Makefile.in (DLL_OFILES): Add tls_pbuf.o. * autoload.cc (CreateDesktopW): Replace CreateDesktopA. (CreateWindowStationW): Replace CreateWindowStationA. (GetUserObjectInformationW): Replace GetUserObjectInformationA. * cygheap.h (cwdstuff::get): Assume default buffer size NT_MAX_PATH. * cygtls.cc (_cygtls::remove): Free temporary TLS path buffers. * cygtls.h (TP_NUM_C_BUFS): Define. (TP_NUM_W_BUFS): Define. (class tls_pathbuf): New class to store pointers to thread local temporary path buffers. (_local_storage::pathbufs): New member. * environ.cc (win_env::add_cache): Use temporary TLS path buffer instead of stack based buffer. (posify): Get temporary outenv buffer from calling function. (environ_init): Create temporary TLS path buffer for posify. (build_env): Create Windows environment block as WCHAR buffer. * environ.h (build_env): Change declaration accordingly. * external.cc (sync_winenv): Accommodate build_env change. * fhandler_console.cc (fhandler_console::need_invisible): Use GetUserObjectInformationW and CreateWindowStationW. * fhandler_process.cc (format_process_maps): Use temporary TLS path buffer instead of stack based buffer. * fork.cc (frok::parent): Convert to use CreateProcessW. * path.cc: Throughout use temporary TLS path buffers instead of stack based buffer. Replace checks for CYG_MAX_PATH by checks for NT_MAX_PATH. (getfileattr): New function to replace GetFileAttributesA. (normalize_win32_path): Remove Win32 and NT long path prefixes. (getwd): Assume PATH_MAX + 1 buffer per SUSv3. * path.h (class path_conv): Set path buffer to size NT_MAX_PATH. (iswdrive): Define. * pinfo.cc (commune_process): Use temporary TLS path buffer instead of stack based buffer. * registry.cc (get_registry_hive_path): Ditto. (load_registry_hive): Ditto. * spawn.cc (spawn_guts): Convert to use CreateProcessW and CreateProcessAsUserW. (av::fixup): Open/close file using NtOpenFile/NtClose. * syscalls.cc (mknod_worker): Allow PATH_MAX file name. (mknod32): Ditto. (getusershell): Ditto. * tls_pbuf.cc: New file implementing tls_pathbuf and tmp_pathbuf methods. * tls_pbuf.h: New header for files using tmp_pathbuf. * tlsoffsets.h: Regenerate. * winsup.h (NT_MAX_PATH): Define as 32767 to avoid USHORT overflow.
2008-03-07 19:24:51 +08:00
c_flags,
NULL, /* environment filled in later */
0, /* use current drive/directory */
* Makefile.in (DLL_OFILES): Add tls_pbuf.o. * autoload.cc (CreateDesktopW): Replace CreateDesktopA. (CreateWindowStationW): Replace CreateWindowStationA. (GetUserObjectInformationW): Replace GetUserObjectInformationA. * cygheap.h (cwdstuff::get): Assume default buffer size NT_MAX_PATH. * cygtls.cc (_cygtls::remove): Free temporary TLS path buffers. * cygtls.h (TP_NUM_C_BUFS): Define. (TP_NUM_W_BUFS): Define. (class tls_pathbuf): New class to store pointers to thread local temporary path buffers. (_local_storage::pathbufs): New member. * environ.cc (win_env::add_cache): Use temporary TLS path buffer instead of stack based buffer. (posify): Get temporary outenv buffer from calling function. (environ_init): Create temporary TLS path buffer for posify. (build_env): Create Windows environment block as WCHAR buffer. * environ.h (build_env): Change declaration accordingly. * external.cc (sync_winenv): Accommodate build_env change. * fhandler_console.cc (fhandler_console::need_invisible): Use GetUserObjectInformationW and CreateWindowStationW. * fhandler_process.cc (format_process_maps): Use temporary TLS path buffer instead of stack based buffer. * fork.cc (frok::parent): Convert to use CreateProcessW. * path.cc: Throughout use temporary TLS path buffers instead of stack based buffer. Replace checks for CYG_MAX_PATH by checks for NT_MAX_PATH. (getfileattr): New function to replace GetFileAttributesA. (normalize_win32_path): Remove Win32 and NT long path prefixes. (getwd): Assume PATH_MAX + 1 buffer per SUSv3. * path.h (class path_conv): Set path buffer to size NT_MAX_PATH. (iswdrive): Define. * pinfo.cc (commune_process): Use temporary TLS path buffer instead of stack based buffer. * registry.cc (get_registry_hive_path): Ditto. (load_registry_hive): Ditto. * spawn.cc (spawn_guts): Convert to use CreateProcessW and CreateProcessAsUserW. (av::fixup): Open/close file using NtOpenFile/NtClose. * syscalls.cc (mknod_worker): Allow PATH_MAX file name. (mknod32): Ditto. (getusershell): Ditto. * tls_pbuf.cc: New file implementing tls_pathbuf and tmp_pathbuf methods. * tls_pbuf.h: New header for files using tmp_pathbuf. * tlsoffsets.h: Regenerate. * winsup.h (NT_MAX_PATH): Define as 32767 to avoid USHORT overflow.
2008-03-07 19:24:51 +08:00
&si,
&pi);
Throughout use "have_execed" macro rather than "hExeced" global handle. Throughout rename _PROC_* to _CH_*. * child_info.h: Include "pinfo.h". (child_info_types): Rename _PROC_* -> _CH_* to avoid confusion with similarly named constants. (_PROC_*): Delete unneeded aliases. (PROC_*): Ditto. (CURR_CHILD_INFO_MAGIC): Ditto. (cchildren): Define using "pinfo_minimal". (child_info::set_saw_ctrl_c): Move to (child_info_spawn::set_saw_ctrl_c): Here. (child_info_spawn::lock): New field. (child_info_spawn::hExeced): Ditto. (child_info_spawn::ev): Ditto. (child_info_spawn::~child_info_spawn): Move to sigproc.cc. (child_info_spawn::child_info_spawn): Ditto. (child_info_spawn::cleanup): Declare new function. (child_info_spawn::set_saw_ctrl_c): Move to this class. Set flag only when execed and return true when we have set the flag. (child_info_spawn::child_info_spawn::signal_myself_exited): New function. (child_info_spawn::wait_for_myself): Ditto. (child_info_spawn::has_execed_cygwin): Ditto. (child_info_spawn::has_execed): Ditto. Replaces "hExeced" test. (child_info_spawn::operator HANDLE&): New operator. (child_info_spawn::worker): Define old "spawn_guts" as class member. (ch_spawn): Declare. (have_execed): Define. (have_execed_cygwin): Ditto. * cygheap.h: Update comment. * dcrt0.cc (get_cygwin_startup_info): Use _CH_* enums. (child_info_spawn::handle_spawn): Ditto. (dll_crt0_0): Ditto. (multiple_cygwin_problem): Ditto. * exceptions.cc (chExeced): Delete obsolete declaration. (ctrl_c_handler): Reference set_saw_ctrl_c via new ch_spawn global. * globals.cc (hExeced): Delete. * pinfo.cc (pinfo::thisproc): Refer to cygheap as ::cygheap for consistency in handle naming when -DDEBUGGING. (pinfo::init): Accommodate case where myself.h is known but h0 is passed in. (pinfo::pinfo): New constructor for setting up a pinfo passed in by previous exec'or. (pinfo::proc_waiter): Don't handle subprocess if we're in the process of exiting due to an exec of a cygwin process. Don't close rd_proc_pipe here. Close it when we actually are finished with the process. Use new ch_spawn.signal_myself_exited function to let exec stub know that subprocess has exited. (pinfo::wait): Clarify debugging output. (pinfo::release): Use "close_h" to close all handles to avoid races. (winpids::add): Assume that elements of the array do not need to be zeroed and are properly initialized or suffer problems on pinfo::release. Don't close hProcess since release does that now. * pinfo.h: Update comment. (pinfo_minimal): Move some elements from pinfo here so that child_info_spawn can use them. (pinfo): Inherit from pinfo_minimal. (pinfo::pinfo): Modify to accommodate new pinfo_minimal. (pinfo::allow_remove): New function. * sigproc.cc (proc_subproc): Use boolean values for true/false. Implement PROC_EXEC_CLEANUP. (proc_terminate): Set ppid = 1 since the procs list will only be iterated when the process has not execed. Don't do any cleanup here since it is now handled in pinfo::release. (sigproc_init): Initialize sync_proc_subproc earlier. (child_info::child_info): Assume that all important fields are properly initialized and avoid memset(). (child_info_spawn::child_info_spawn): Specifically test for execing and then set up appropriate fields in the struct. (child_info_spawn::cleanup): Define new function. (child_info_spawn::record_children): Specifically test for being execed here. Fill in pinfo_minimal part of children array. (child_info_spawn::reattach_children): Use constructor to duplicate information for previous exec'or. Add more debugging output. (remove_proc): Force deletion of thread when exiting due to exec. Rely on pinfo::cleanup in release. * sigproc.h (PROC_EXEC_CLEANUP): New enum. (PROC_DETACHED_CHILD): Delete. * spawn.cc (chExeced): Delete. (child_info_spawn::worker): Rename from spawn_guts. Use elements of child_info_spawn throughout rather than ch.whatever. Use ::cygheap to refer to global rather than element of child_info. Use wait_for_myself() rather than waitpid(). Call child_info_spawn::cleanup on function return. (spawnve): Reflect movement of spawn_guts functionality into child_info_spawn::worker. * syscalls.cc (popen): Ditto. * winsup.h (spawn_guts): Delete declaration.
2011-11-14 09:29:49 +08:00
if (rc)
debug_printf ("forked pid %u", pi.dwProcessId);
else
{
this_errno = geterrno_from_win_error ();
error ("CreateProcessW failed for '%W'", myself->progname);
memset (&pi, 0, sizeof (pi));
goto cleanup;
}
Reintegrate socket duplication via WSADuplicateSocket/WSASocket. * autoload.cc (WSADuplicateSocketW): Define. (WSASocketW): Define. * dtable.cc (dtable::release): Call dec_need_fixup_before if necessary. (dtable::fixup_before_fork): New function. (dtable::fixup_before_exec): New function. * dtable.h (class dtable): Add member cnt_need_fixup_before. Add declarations for above new functions. (dtable::dec_need_fixup_before): New inline method. (dtable::inc_need_fixup_before): New inline method. (dtable::need_fixup_before): New inline method. * fhandler.h (fhandler_base::fixup_before_fork_exec): New virtual method. (fhandler_base::need_fixup_before): New virtual method. (class fhandler_socket): Add member prot_info_ptr. (fhandler_socket::init_fixup_before): Declare. (fhandler_socket::need_fixup_before): New inline method. (fhandler_socket::fixup_before_fork_exec): Declare. (fhandler_socket::fixup_after_exec): Declare. * fhandler_socket.cc (fhandler_socket::fhandler_socket): Initialize prot_info_ptr to NULL. (fhandler_socket::~fhandler_socket): Free prot_info_ptr conditionally. (fhandler_socket::init_fixup_before): New method. (fhandler_socket::fixup_before_fork_exec): Ditto. (fhandler_socket::fixup_after_fork): Use WSASocketW to duplicate socket if necessary. (fhandler_socket::fixup_after_exec): New method. (fhandler_socket::dup): Use fixup_before_fork_exec/fixup_after_fork to duplicate socket if necessary. * fork.cc (frok::parent): Start child suspended if some fhandler needs fixup before fork. If so, call dtable::fixup_before_fork after CreateProcess and resume child. * net.cc (fdsock): Try to find out if socket needs fixup before and initialize socket accordingly. Add HUGE comment to explain what happens and why. * spawn.cc (spawn_guts): Start child suspended if some fhandler needs fixup before exec. If so, call dtable::fixup_before_exec after CreateProcess.
2009-11-17 18:43:01 +08:00
if (cygheap->fdtab.need_fixup_before ())
{
cygheap->fdtab.fixup_before_fork (pi.dwProcessId);
ResumeThread (pi.hThread);
}
* child_info.h (CURR_CHILD_INFO_MAGIC): Regenerate. (child_info::retry): Move here from fork subclass. (child_info::exit_code): New field. (child_info::retry_count): Max retry count for process start. (child_info::proc_retry): Declare new function. (child_info_fork::retry): Move to parent. (child_info_fork::fork_retry): Ditto. * dcrt0.cc (child_info::fork_retry): Rename and move. (child_info_fork::handle_failure): Move. (dll_crt0_0): Initialize console handler based on whether we have a controlling tty or not. Avoid nonsensical check for fork where it can never occur. * environ.cc (set_proc_retry): Rename from set_fork_retry. Set retry_count in child_info. (parse_thing): Reflect above change. * exceptions.cc (dummy_ctrl_c_handler): Remove unused variable name. (ctrl_c_handler): Always return TRUE for the annoying CTRL_LOGOFF_EVENT. * fhandler_termios.cc (fhandler_termios::tcsetpgrp): Remove call to init_console_handler. * fhandler_tty.cc (fhandler_tty_slave::open): Just call mange_console_count here and let it decide what to do with initializing console control handling. * fork.cc (fork_retry): Remove definition. (frok::parent): Define static errbuf and use in error messages (not thread safe yet). Close pi.hThread as soon as possible. Protect pi.hProcess as soon as possible. Don't set retry_count. That happens automatically in the constructor now. Accommodate name change from fork_retry to proc_retry. * init.cc (dll_entry): Turn off ctrl-c handling early until we know how it is supposed to be handled. * pinfo.cc (_pinfo::dup_proc_pipe): Remember original proc pipe value for failure error message. Tweak debug message slightly. * sigproc.cc (child_info::retry_count): Define. (child_info::child_info): Initialize retry count. (child_info::sync): Set exit code if process dies before synchronization. (child_info::proc_retry): Rename from child_info_fork::fork_retry. Use previously derived exit code. Be more defensive about what is classified as an error exit. (child_info_fork::handle_failure): Move here from dcrt0.cc. * spawn.cc (spawn_guts): Maintain error mode when starting new process to avoid annoying pop ups. Move deimpersonate call within new loop. Move envblock freeing to end. Loop if process dies prematurely with bad exit code. * syscalls.cc (init_console_handler): Remove hopefully unneeded call to init_console_handler.
2006-03-19 03:17:21 +08:00
CloseHandle (pi.hThread);
hchild = pi.hProcess;
* child_info.h (CURR_CHILD_INFO_MAGIC): Regenerate. (child_info::retry): Move here from fork subclass. (child_info::exit_code): New field. (child_info::retry_count): Max retry count for process start. (child_info::proc_retry): Declare new function. (child_info_fork::retry): Move to parent. (child_info_fork::fork_retry): Ditto. * dcrt0.cc (child_info::fork_retry): Rename and move. (child_info_fork::handle_failure): Move. (dll_crt0_0): Initialize console handler based on whether we have a controlling tty or not. Avoid nonsensical check for fork where it can never occur. * environ.cc (set_proc_retry): Rename from set_fork_retry. Set retry_count in child_info. (parse_thing): Reflect above change. * exceptions.cc (dummy_ctrl_c_handler): Remove unused variable name. (ctrl_c_handler): Always return TRUE for the annoying CTRL_LOGOFF_EVENT. * fhandler_termios.cc (fhandler_termios::tcsetpgrp): Remove call to init_console_handler. * fhandler_tty.cc (fhandler_tty_slave::open): Just call mange_console_count here and let it decide what to do with initializing console control handling. * fork.cc (fork_retry): Remove definition. (frok::parent): Define static errbuf and use in error messages (not thread safe yet). Close pi.hThread as soon as possible. Protect pi.hProcess as soon as possible. Don't set retry_count. That happens automatically in the constructor now. Accommodate name change from fork_retry to proc_retry. * init.cc (dll_entry): Turn off ctrl-c handling early until we know how it is supposed to be handled. * pinfo.cc (_pinfo::dup_proc_pipe): Remember original proc pipe value for failure error message. Tweak debug message slightly. * sigproc.cc (child_info::retry_count): Define. (child_info::child_info): Initialize retry count. (child_info::sync): Set exit code if process dies before synchronization. (child_info::proc_retry): Rename from child_info_fork::fork_retry. Use previously derived exit code. Be more defensive about what is classified as an error exit. (child_info_fork::handle_failure): Move here from dcrt0.cc. * spawn.cc (spawn_guts): Maintain error mode when starting new process to avoid annoying pop ups. Move deimpersonate call within new loop. Move envblock freeing to end. Loop if process dies prematurely with bad exit code. * syscalls.cc (init_console_handler): Remove hopefully unneeded call to init_console_handler.
2006-03-19 03:17:21 +08:00
/* Protect the handle but name it similarly to the way it will
be called in subproc handling. */
ProtectHandle1 (hchild, childhProc);
* child_info.h (CURR_CHILD_INFO_MAGIC): Regenerate. (child_info::retry): Move here from fork subclass. (child_info::exit_code): New field. (child_info::retry_count): Max retry count for process start. (child_info::proc_retry): Declare new function. (child_info_fork::retry): Move to parent. (child_info_fork::fork_retry): Ditto. * dcrt0.cc (child_info::fork_retry): Rename and move. (child_info_fork::handle_failure): Move. (dll_crt0_0): Initialize console handler based on whether we have a controlling tty or not. Avoid nonsensical check for fork where it can never occur. * environ.cc (set_proc_retry): Rename from set_fork_retry. Set retry_count in child_info. (parse_thing): Reflect above change. * exceptions.cc (dummy_ctrl_c_handler): Remove unused variable name. (ctrl_c_handler): Always return TRUE for the annoying CTRL_LOGOFF_EVENT. * fhandler_termios.cc (fhandler_termios::tcsetpgrp): Remove call to init_console_handler. * fhandler_tty.cc (fhandler_tty_slave::open): Just call mange_console_count here and let it decide what to do with initializing console control handling. * fork.cc (fork_retry): Remove definition. (frok::parent): Define static errbuf and use in error messages (not thread safe yet). Close pi.hThread as soon as possible. Protect pi.hProcess as soon as possible. Don't set retry_count. That happens automatically in the constructor now. Accommodate name change from fork_retry to proc_retry. * init.cc (dll_entry): Turn off ctrl-c handling early until we know how it is supposed to be handled. * pinfo.cc (_pinfo::dup_proc_pipe): Remember original proc pipe value for failure error message. Tweak debug message slightly. * sigproc.cc (child_info::retry_count): Define. (child_info::child_info): Initialize retry count. (child_info::sync): Set exit code if process dies before synchronization. (child_info::proc_retry): Rename from child_info_fork::fork_retry. Use previously derived exit code. Be more defensive about what is classified as an error exit. (child_info_fork::handle_failure): Move here from dcrt0.cc. * spawn.cc (spawn_guts): Maintain error mode when starting new process to avoid annoying pop ups. Move deimpersonate call within new loop. Move envblock freeing to end. Loop if process dies prematurely with bad exit code. * syscalls.cc (init_console_handler): Remove hopefully unneeded call to init_console_handler.
2006-03-19 03:17:21 +08:00
strace.write_childpid (pi.dwProcessId);
/* Wait for subproc to initialize itself. */
if (!ch.sync (pi.dwProcessId, hchild, FORK_WAIT_TIMEOUT))
{
if (!error ("forked process %u died unexpectedly, retry %d, exit code %y",
pi.dwProcessId, ch.retry, ch.exit_code))
continue;
this_errno = EAGAIN;
goto cleanup;
}
break;
}
*** cygwin DLL Changes: * child_info.h (CURR_CHILD_INFO_MAGIC): Reset. (child_info::dwProcessId): Delete. (child_info::straced): New variable. (child_info::handle_fork): New member function. * dcrt0.cc (in_forkee): New global variable. (__cygwin_user_data::forkee): Mark as obsolete. (do_global_ctors): Use in_forkee rather than user_data->forkee. (get_cygwin_startup_info): Ditto. Deal with new straced field to allow strace to deal with children of attached processes. (initial_env): Accommodate changes to strace::hello. (child_info_fork::handle_fork): Rename from plain old 'handle_fork'. Move alloc_stack() call elsewhere. (dll_crt0_0): Fill out more of user_data. Reference handle_fork via fork_info. Add some debugging output. (_dll_crt0): Don't wait for sync thread if sync_startup is invalid. Zero sync_startup here. Call alloc_stack() here, if appropriate. (dll_crt0_1): Use in_forkee rather than user_data->forkee. (dll_crt0): Ditto. * malloc_wrapper.cc (malloc_init): Ditto. * dll_init.cc (in_forkee): Remove local static version of this variable. (dll_list::load_after_fork): Don't set in_forkee here. * external.cc (cygwin_internal): Use strace method rather than accessing field directly. * fhandler.cc (fhandler_base::read): Ditto. * fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Ditto. * fork.cc (frok::parent): Invoke strace write_childpid to communicate with potential strace. (child_copy): Add more detail to debugging output. * init.cc (calibration_id): New static variable. (prime_threads): Set sync_startup to invalid handle if we already know about thread_func_ix. Use static calibration_id to hold calibration thread id. * munge_threadfunc (munge_threadfunc): Don't try to debug if we don't find threadfunc_ix. (dll_entry): Avoid calling munge_threadfunc and _cygtls::remove on non-cygwin threads invoked during process startup. * pinfo.cc (set_myself): Always call strace.hello here regardless of DEBUGGING. * sigproc.cc (child_info::child_info): Remove spurious handling of dwProcessId. Set straced as appropriate. * spawn.cc (spawn_guts): Rename ciresrv to ch. Invoke strace write_childpid to communicate with potential strace. * strace.cc: Include child_info.h. (strace::hello): Remove inited test. Use active() method to test if strace has been activated. Handle case where we are started before (mypid): New function. (strace::vsprntf): Try to deal more intelligently with case where progname may not be filled out. Put pid in parentheses if it is a windows pid rather than a cygwin pid. myself has been filled out. (strace::write_childpid): New function for notifying strace about the creation of children. (strace::vprntf): Use strace method rather than accessing field directly. (strace_printf): Ditto. (strace::wm): Ditto. * winsup.h (in_forkee): Declare. * include/sys/strace.h (strace::write_childpid): Declare new function. (strace::attached): Define new function. (strace::active): Ditto. (strace::active_val): Ditto. (_STRACE_ON): Delete. (_STRACE_OFF): Ditto. (define_strace0): Use strace method rather than accessing field directly. (strace_printf_wrap): Ditto. (strace_printf_wrap1): Ditto. *** cygwin utils changes: * strace.cc (nprocesses): Make static global. (quiet): New variable. (strace_active): Ditto. (add_child): Increment nprocesses here. Don't add a child if it is already added (windows bug?). Report on child if not quiet. (get_child): Just return NULL if child not found. (remove_child): Report on child if not quiet. (attach_process): Don't complain if given a windows process. Use windows pid in error. (handle_output_debug_string): Issue error if trying to manipulate a process that we don't know about. Handle _STRACE_CHILD_PID - attach to reported child when we get this. (proc_child): Move nprocesses to file scope. Report on exceptions. (longopts): Implement "--quiet". (opts): Implement "-q". (main): Manipulate quiet flag. * utils.sgml (strace): Add words describing '-q'.
2005-12-30 04:46:34 +08:00
/* Restore impersonation */
cygheap->user.reimpersonate ();
fix_impersonation = false;
child_pid = cygwin_pid (pi.dwProcessId);
child.init (child_pid, PID_IN_USE | PID_NEW, NULL);
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
if (!child)
{
this_errno = get_errno () == ENOMEM ? ENOMEM : EAGAIN;
syscall_printf ("pinfo failed");
goto cleanup;
}
2000-02-18 03:38:33 +08:00
child->nice = myself->nice;
/* Initialize things that are done later in dll_crt0_1 that aren't done
for the forkee. */
wcscpy (child->progname, myself->progname);
2000-02-18 03:38:33 +08:00
/* Fill in fields in the child's process table entry. */
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
child->dwProcessId = pi.dwProcessId;
child.hProcess = hchild;
ch.postfork (child);
/* Hopefully, this will succeed. The alternative to doing things this
way is to reserve space prior to calling CreateProcess and then fill
it in afterwards. This requires more bookkeeping than I like, though,
so we'll just do it the easy way. So, terminate any child process if
we can't actually record the pid in the internal table. */
if (!child.remember (false))
{
TerminateProcess (hchild, 1);
this_errno = EAGAIN;
#ifdef DEBUGGING0
error ("child remember failed");
#endif
goto cleanup;
}
#ifndef NO_SLOW_PID_REUSE
slow_pid_reuse (hchild);
#endif
/* CHILD IS STOPPED */
debug_printf ("child is alive (but stopped)");
/* Initialize, in order: stack, dll data, dll bss.
data, bss, heap were done earlier (in dcrt0.cc)
Note: variables marked as NO_COPY will not be copied since they are
placed in a protected segment. */
2000-02-18 03:38:33 +08:00
MALLOC_CHECK;
const void *impure_beg;
const void *impure_end;
const char *impure;
* exceptions.cc (set_signal_mask): Redefine to not pass by address. Report calculated mask in debugging output. * sigproc.h (set_signal_mask): Reflect above change in declaration. * path.cc (mount_item::build_win32): Take path apart before feeding it to fnmunge. Throughout, change use of _reent_winsup()-> to _my_tls.locals. instead. Throughout, remove obsolete MT_SAFE/_CYG_THREAD_FAILSAFE considerations. Througout, add cygtls.h include. * Makefile.in (DLL_OFILES): Add cygtls.o. Add some more objects to the -fomit-frame-pointer list. * acconfig.h: Remove obsolete settings. * config.h.in: Ditto. * bsdlib.cc: Add cygtls.h include. * configure.in: Remove --enable-extra-threadsafe-checking. * configure: Regenerate. * cygtls.h (_local_storage): New struct renamed from _winsup_t (sic). (_threadinfo:local_clib): Add new field. (_threadinfo::locals): Ditto. (_threadinfo::init_thread): Accept second _reent * argument. (_threadinfo::call): Define as regparm. (CYGTLS_PADSIZE): Remove unnecessary slop. (_getreent): Define as a macro. * thread.h: Remove _CYG_THREAD_FAILSAFE and MT_SAFE stuff. (_winsup_t): Move to cygtls.h. (ResourceLocks::ResourceLocks): Eliminate empty constructor. (MTinterface::reents): Eliminate. (MTinterface::thread_self_key): Eliminate. (MTinterface::MTinterface): Eliminate. * dcrt0.cc: Include stdio.h for _impure_ptr initialization. (do_global_ctors): Remove run_ctors_p (sic) considerations. Don't call atexit here. (__main): Initialize destructors for user here. (dll_crt0_1): Accept a dummy argument. Don't call init_thread here. Don't set _impure_ptr here. Call do_global_ctors after more things have been initialized. (_dll_crt0): Define zeros buffer as max of needed size of CYGTLS_PADSIZE so that it can be used for two purposes while minimizing stack usage. Initialize _impure_ptr specifically, for speed. Call dll_crt0_1 with buffer argument. (cygwin_dll_init): Call dll_crt0_1 with dummy argument. * dtable.cc (dtable::find_unused_handle): Remove call to AssertResourceOwner. * exceptions.cc: Move _threadinfo stuff to new file. * cygtls.cc: New file. * gentls_offsets: Accommodate increasing complexity of cygtls.h. * hires.h (hires_base::~hires_base): Remove. * init.cc (dll_entry): Remove setting of reents. * thread.cc: Remove syslog.h include. (__getreent): Simplify to use _my_tls. (_reent_winsup): Delete. (AssertResourceOwner): Delete. (MTinterface::Init): Remove setting of _clib and _winsup, with all that entails. (MTinterface::fixup_after_fork): Ditto. (pthread::thread_init_wrapper): Ditto. Also remove call to set_tls_self_pointer. (pthread::set_tls_self_pointer): Eliminate. (pthread::get_tls_self_pointer): Just return _my_tls.tid; (__reent_t::init_clib): Eliminate. * tlsoffsets.h: Regenerate.
2003-12-24 00:26:31 +08:00
if (&_my_tls == _main_tls)
impure_beg = impure_end = impure = NULL;
* exceptions.cc (set_signal_mask): Redefine to not pass by address. Report calculated mask in debugging output. * sigproc.h (set_signal_mask): Reflect above change in declaration. * path.cc (mount_item::build_win32): Take path apart before feeding it to fnmunge. Throughout, change use of _reent_winsup()-> to _my_tls.locals. instead. Throughout, remove obsolete MT_SAFE/_CYG_THREAD_FAILSAFE considerations. Througout, add cygtls.h include. * Makefile.in (DLL_OFILES): Add cygtls.o. Add some more objects to the -fomit-frame-pointer list. * acconfig.h: Remove obsolete settings. * config.h.in: Ditto. * bsdlib.cc: Add cygtls.h include. * configure.in: Remove --enable-extra-threadsafe-checking. * configure: Regenerate. * cygtls.h (_local_storage): New struct renamed from _winsup_t (sic). (_threadinfo:local_clib): Add new field. (_threadinfo::locals): Ditto. (_threadinfo::init_thread): Accept second _reent * argument. (_threadinfo::call): Define as regparm. (CYGTLS_PADSIZE): Remove unnecessary slop. (_getreent): Define as a macro. * thread.h: Remove _CYG_THREAD_FAILSAFE and MT_SAFE stuff. (_winsup_t): Move to cygtls.h. (ResourceLocks::ResourceLocks): Eliminate empty constructor. (MTinterface::reents): Eliminate. (MTinterface::thread_self_key): Eliminate. (MTinterface::MTinterface): Eliminate. * dcrt0.cc: Include stdio.h for _impure_ptr initialization. (do_global_ctors): Remove run_ctors_p (sic) considerations. Don't call atexit here. (__main): Initialize destructors for user here. (dll_crt0_1): Accept a dummy argument. Don't call init_thread here. Don't set _impure_ptr here. Call do_global_ctors after more things have been initialized. (_dll_crt0): Define zeros buffer as max of needed size of CYGTLS_PADSIZE so that it can be used for two purposes while minimizing stack usage. Initialize _impure_ptr specifically, for speed. Call dll_crt0_1 with buffer argument. (cygwin_dll_init): Call dll_crt0_1 with dummy argument. * dtable.cc (dtable::find_unused_handle): Remove call to AssertResourceOwner. * exceptions.cc: Move _threadinfo stuff to new file. * cygtls.cc: New file. * gentls_offsets: Accommodate increasing complexity of cygtls.h. * hires.h (hires_base::~hires_base): Remove. * init.cc (dll_entry): Remove setting of reents. * thread.cc: Remove syslog.h include. (__getreent): Simplify to use _my_tls. (_reent_winsup): Delete. (AssertResourceOwner): Delete. (MTinterface::Init): Remove setting of _clib and _winsup, with all that entails. (MTinterface::fixup_after_fork): Ditto. (pthread::thread_init_wrapper): Ditto. Also remove call to set_tls_self_pointer. (pthread::set_tls_self_pointer): Eliminate. (pthread::get_tls_self_pointer): Just return _my_tls.tid; (__reent_t::init_clib): Eliminate. * tlsoffsets.h: Regenerate.
2003-12-24 00:26:31 +08:00
else
{
impure = "impure";
* exceptions.cc (set_signal_mask): Redefine to not pass by address. Report calculated mask in debugging output. * sigproc.h (set_signal_mask): Reflect above change in declaration. * path.cc (mount_item::build_win32): Take path apart before feeding it to fnmunge. Throughout, change use of _reent_winsup()-> to _my_tls.locals. instead. Throughout, remove obsolete MT_SAFE/_CYG_THREAD_FAILSAFE considerations. Througout, add cygtls.h include. * Makefile.in (DLL_OFILES): Add cygtls.o. Add some more objects to the -fomit-frame-pointer list. * acconfig.h: Remove obsolete settings. * config.h.in: Ditto. * bsdlib.cc: Add cygtls.h include. * configure.in: Remove --enable-extra-threadsafe-checking. * configure: Regenerate. * cygtls.h (_local_storage): New struct renamed from _winsup_t (sic). (_threadinfo:local_clib): Add new field. (_threadinfo::locals): Ditto. (_threadinfo::init_thread): Accept second _reent * argument. (_threadinfo::call): Define as regparm. (CYGTLS_PADSIZE): Remove unnecessary slop. (_getreent): Define as a macro. * thread.h: Remove _CYG_THREAD_FAILSAFE and MT_SAFE stuff. (_winsup_t): Move to cygtls.h. (ResourceLocks::ResourceLocks): Eliminate empty constructor. (MTinterface::reents): Eliminate. (MTinterface::thread_self_key): Eliminate. (MTinterface::MTinterface): Eliminate. * dcrt0.cc: Include stdio.h for _impure_ptr initialization. (do_global_ctors): Remove run_ctors_p (sic) considerations. Don't call atexit here. (__main): Initialize destructors for user here. (dll_crt0_1): Accept a dummy argument. Don't call init_thread here. Don't set _impure_ptr here. Call do_global_ctors after more things have been initialized. (_dll_crt0): Define zeros buffer as max of needed size of CYGTLS_PADSIZE so that it can be used for two purposes while minimizing stack usage. Initialize _impure_ptr specifically, for speed. Call dll_crt0_1 with buffer argument. (cygwin_dll_init): Call dll_crt0_1 with dummy argument. * dtable.cc (dtable::find_unused_handle): Remove call to AssertResourceOwner. * exceptions.cc: Move _threadinfo stuff to new file. * cygtls.cc: New file. * gentls_offsets: Accommodate increasing complexity of cygtls.h. * hires.h (hires_base::~hires_base): Remove. * init.cc (dll_entry): Remove setting of reents. * thread.cc: Remove syslog.h include. (__getreent): Simplify to use _my_tls. (_reent_winsup): Delete. (AssertResourceOwner): Delete. (MTinterface::Init): Remove setting of _clib and _winsup, with all that entails. (MTinterface::fixup_after_fork): Ditto. (pthread::thread_init_wrapper): Ditto. Also remove call to set_tls_self_pointer. (pthread::set_tls_self_pointer): Eliminate. (pthread::get_tls_self_pointer): Just return _my_tls.tid; (__reent_t::init_clib): Eliminate. * tlsoffsets.h: Regenerate.
2003-12-24 00:26:31 +08:00
impure_beg = _impure_ptr;
impure_end = _impure_ptr + 1;
}
rc = child_copy (hchild, true,
"stack", stack_here, ch.stackbottom,
impure, impure_beg, impure_end,
NULL);
2000-02-18 03:38:33 +08:00
__malloc_unlock ();
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
locked = false;
MALLOC_CHECK;
if (!rc)
{
this_errno = get_errno ();
error ("pid %u, exitval %p", pi.dwProcessId, ch.exit_code);
goto cleanup;
}
2000-02-18 03:38:33 +08:00
/* Now fill data/bss of any DLLs that were linked into the program. */
for (dll *d = dlls.istart (DLL_LINK); d; d = dlls.inext ())
{
debug_printf ("copying data/bss of a linked dll");
if (!child_copy (hchild, true,
"linked dll data", d->p.data_start, d->p.data_end,
"linked dll bss", d->p.bss_start, d->p.bss_end,
NULL))
{
this_errno = get_errno ();
error ("couldn't copy linked dll data/bss");
goto cleanup;
}
2000-02-18 03:38:33 +08:00
}
/* Start thread, and then wait for it to reload dlls. */
resume_child (forker_finished);
if (!ch.sync (child->pid, hchild, FORK_WAIT_TIMEOUT))
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
{
this_errno = EAGAIN;
error ("died waiting for dll loading");
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
goto cleanup;
}
2000-02-18 03:38:33 +08:00
/* If DLLs were loaded in the parent, then the child has reloaded all
of them and is now waiting to have all of the individual data and
bss sections filled in. */
if (load_dlls)
{
/* CHILD IS STOPPED */
/* write memory of reloaded dlls */
for (dll *d = dlls.istart (DLL_LOAD); d; d = dlls.inext ())
2000-02-18 03:38:33 +08:00
{
debug_printf ("copying data/bss for a loaded dll");
if (!child_copy (hchild, true,
"loaded dll data", d->p.data_start, d->p.data_end,
"loaded dll bss", d->p.bss_start, d->p.bss_end,
NULL))
{
this_errno = get_errno ();
#ifdef DEBUGGING
error ("copying data/bss for a loaded dll");
#endif
goto cleanup;
}
2000-02-18 03:38:33 +08:00
}
/* Start the child up again. */
resume_child (forker_finished);
2000-02-18 03:38:33 +08:00
}
ForceCloseHandle (forker_finished);
forker_finished = NULL;
2000-02-18 03:38:33 +08:00
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
return child_pid;
2000-02-18 03:38:33 +08:00
/* Common cleanup code for failure cases */
cleanup:
if (fix_impersonation)
cygheap->user.reimpersonate ();
Rename _threadinfo to _cygtls, throughout. * cygtls.h (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::push): Make second argument mandatory. (_cygtls::fixup_after_fork): Declare new function. (_cygtls::lock): Ditto. * cygtls.cc (_cygtls::fixup_after_fork): Define new function. * dcrt0.cc (cygwin_finished_initializing): Define as bool. (alloc_stack): Use _tlstop rather than arbitrary variable in probably vain attempt to avoid strange fork problem on CTRL-C. (dll_crt0_0): Remove obsolete winpids::init call. * dll_init.cc (dll_dllcrt0): Detect forkee condition as equivalent to initializing. * winsup.h (cygwin_finished_initializing): Declare as bool. * exceptions.cc (handle_exceptions): Rely on cygwin_finished_initializing to determine how to handle exception during process startup. (_cygtls::call_signal_handler): Rename from call_signal_handler_now. (_cygtls::interrupt_now): Fill in second argument to push. (signal_fixup_after_fork): Eliminate. (setup_handler): Initialize locked to avoid potential inappropriate unlock. Resume thread if it has acquired the stack lock. (ctrl_c_handler): Just exit if ctrl-c is hit before cygiwn has finished initializing. * fork.cc (sync_with_child): Don't call abort since it can cause exit deadlocks. (sync_with_child): Change debugging output slightly. (fork_child): Set cygwin_finished_initializing here. Call _cygtls fork fixup and explicitly call sigproc_init. (fork_parent): Release malloc lock on fork failure. (vfork): Call signal handler via _my_tls. * sigproc.cc (sig_send): Ditto. * syscalls.cc (readv): Ditto. * termios.cc (tcsetattr): Ditto. * wait.cc (wait4): Ditto. * signal.cc (nanosleep): Ditto. (abort): Ditto. (kill_pgrp): Avoid killing self if exiting. * sync.cc (muto::acquire): Remove (temporarily?) ill-advised exiting_thread check. * gendef (_sigfe): Be more agressive in protecting stack pointer from other access by signal thread. (_cygtls::locked): Define new function. (_sigbe): Ditto. (_cygtls::pop): Protect edx. (_cygtls::lock): Use guaranteed method to set eax to 1. (longjmp): Aggressively protect signal stack. * miscfuncs.cc (low_priority_sleep): Reduce "sleep time" for secs == 0. * pinfo.cc (winpids::set): Counterintuitively use malloc's lock to protect simultaneous access to the pids list since there are pathological conditions which can cause malloc to call winpid. (winpids::init): Eliminate. * pinfo.h (winpids::cs): Eliminate declaration. * pinfo.h (winpids::init): Eliminate definition.
2004-02-12 11:01:58 +08:00
if (locked)
__malloc_unlock ();
2000-02-18 03:38:33 +08:00
/* Remember to de-allocate the fd table. */
if (hchild && !child.hProcess)
ForceCloseHandle1 (hchild, childhProc);
2000-02-18 03:38:33 +08:00
if (forker_finished)
ForceCloseHandle (forker_finished);
debug_printf ("returning -1");
2000-02-18 03:38:33 +08:00
return -1;
}
extern "C" int
fork ()
2000-02-18 03:38:33 +08:00
{
frok grouped;
debug_printf ("entering");
grouped.load_dlls = 0;
int res;
bool ischild = false;
myself->set_has_pgid_children ();
* child_info.h (child_info::cygheap_h): Delete. (child_info::dwProcessId): New field. * cygheap.cc (init_cheap): Delete. (dup_now): Ditto. (cygheap_setup_for_child): Ditto. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_fixup_in_child): Simplify. Use new "child_copy" function to copy heap from parent. (_csbrk): Don't attempt allocation if within cygheap section. Fix so that more than one allocation will succeed. (cygheap_init): Reset possibly-nonzero region to zero. * cygheap.h (cygheap_setup_for_child): Delete declaration. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_start): Define as an array. * cygwin.sc: Modernize. Remove unneeded sections. Define cygheap here. * dcrt0.cc (do_exit): Reflect argument change to close_all_files. * dtable.cc (dtable::vfork_parent_restore): Ditto. * dtable.h: Ditto. * fhandler.h: Ditto. * fork.cc (fork_copy): Call ReadProcessMemory if there is no thread (indicating that we're execing). (fork_child): Don't mess with hParent. (fork_parent): Remove hParent stuff. It happens earlier now. Remove call to cygheap_setup_for_child* stuff. (fork): Put child_info_stuff in grouped structure. Issue error if parent handle is not set. (child_copy): New function. * sigproc.cc (child_info::child_info): Put cygheap settings here. Set parent handle. (child_info::~child_info): Close parent handle if it exists. * spawn.cc (spawn_guts): Reorganize so that ciresrv is allocated at only the last minute so that cygheap changes are reflected. Delete cygheap_setup* calls. * syscalls.cc (close_all_files): Add an argument to flag when the fd entry should be released. * winsup.h (close_all_files): Add an argument to close_all_files declaration. Declare child_copy.
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if (grouped.ch.parent == NULL)
return -1;
if (grouped.ch.subproc_ready == NULL)
* sigproc.cc (mychild): Reimplement as list scan. (proc_subproc): Don't mess with pinfo if it's myself. * child_info.h (child_info_types): Label enum for _PROC constants. (child_info::child_info): New constructor. (child_info::~child_info): New destructor. (child_info::sync): Declare new function. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): Remove old constructor. (child_info_spawn::child_info_spawn): New constructor. * dcrt0.cc (dll_crt0_0): Use correct sizeof when doing sanity check on passed in child_info. Signal readiness to parent when not forking (and not spawning). * fork.cc (sync_with_child): Delete. (resume_child): Remove extra argument. (sync_with_parent): Use child_info method to sync with parent. (fork_child): Don't close fork_info->subproc_ready since that is now handled by the destructor. (fork_parent): Remove subproc_ready stuff. Use child_info sync method for waiting.. Set start time here for child. Rename "forked" to "child". (fork): Check ch.subproc_ready for validity here. * pinfo.h (_pinfo::exec_sendsig): Temp storage for exec stub which may be staying around to handle non-cygwin captive process. (_pinfo::exec_dwProcessId): Ditto. (_pinfo::_lock): Renamed from lock. (_pinfo::lock): New method. (_pinfo::unlock): Ditto. (_pinfo::initialize_lock): Ditto. * pinfo.cc (set_myself): Use initialize_lock method to initialize myself lock. Set "exec" fields in _pinfo to zero to indicate that we've started successfully. Set start time here when appropriate. (_pinfo::commune_send): Use pinfo lock/unlock methods. (proc_waiter): Remove special case for non-cywin processes. Reinstitute handling for PID_NOCLDSTOP. * sigproc.cc (proc_subproc): Set proper EAGAIN errno when process table is filled. (sig_send): Use exec_* fields from _pinfo for sending signals if the the _pinfo sendsig never materializes. (child_info::child_info): New constructor, renamed from init_child_info. Zeroes child_info structure and sets appropriate fields in structure based on chtype. (child_info::~child_info): New destructor. Closes subproc_ready if it exists. (child_info_fork::child_info_fork): New constructor. (child_info_spawn::child_info_spawn): New constructor. (child_info::ready): New function. Signals parent when child is ready. (child_info::sync): New function. Wait for child to signal us or process to die. (remove_proc): Remove closing of hProcess since this should now be handled shortly after process creation. * spawn.cc (spawn_guts): Use child_info_spawn constructor rather than init_child_info. Save exec_sendsig and exec_dwProcessId in execing _pinfo. Rely on child_info constructor to properly set parent_wr_proc_pipe in ciresrv. Revert to previous determination on whether to start a process in suspended mode. Remove reparenting stuff. Just keep a stub around if starting a non-cygwin process.
2004-12-06 03:41:26 +08:00
{
system_printf ("unable to allocate subproc_ready event, %E");
return -1;
}
{
hold_everything held_everything (ischild);
/* This tmp_pathbuf constructor is required here because the below setjmp
magic will otherwise not restore the original buffer count values in
the thread-local storage. A process forking too deeply will run into
the problem to be out of temporary TLS path buffers. */
tmp_pathbuf tp;
if (!held_everything)
{
if (exit_state)
Sleep (INFINITE);
set_errno (EAGAIN);
return -1;
}
/* Put the dll list in topological dependency ordering, in
hopes that the child will have a better shot at loading dlls
properly if it only has to deal with one at a time. */
dlls.topsort ();
ischild = !!setjmp (grouped.ch.jmp);
2013-04-23 17:44:36 +08:00
volatile char * volatile stackp;
#ifdef __x86_64__
__asm__ volatile ("movq %%rsp,%0": "=r" (stackp));
#else
__asm__ volatile ("movl %%esp,%0": "=r" (stackp));
#endif
if (!ischild)
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res = grouped.parent (stackp);
else
{
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res = grouped.child (stackp);
in_forkee = false;
ischild = true; /* might have been reset by fork mem copy */
}
}
MALLOC_CHECK;
if (ischild)
{
myself->process_state |= PID_ACTIVE;
myself->process_state &= ~(PID_INITIALIZING | PID_EXITED | PID_REAPED);
}
else if (res < 0)
{
if (!grouped.errmsg)
syscall_printf ("fork failed - child pid %d, errno %d", grouped.child_pid, grouped.this_errno);
else
{
char buf[strlen (grouped.errmsg) + sizeof ("child %d - , errno 4294967295 ")];
strcpy (buf, "child %d - ");
strcat (buf, grouped.errmsg);
strcat (buf, ", errno %d");
system_printf (buf, grouped.child_pid, grouped.this_errno);
}
set_errno (grouped.this_errno);
}
syscall_printf ("%R = fork()", res);
return res;
2000-02-18 03:38:33 +08:00
}
#ifdef DEBUGGING
void
fork_init ()
{
}
#endif /*DEBUGGING*/
2000-02-18 03:38:33 +08:00
extern "C" int
2000-02-18 03:38:33 +08:00
vfork ()
{
debug_printf ("stub called");
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return fork ();
}
* child_info.h (child_info::cygheap_h): Delete. (child_info::dwProcessId): New field. * cygheap.cc (init_cheap): Delete. (dup_now): Ditto. (cygheap_setup_for_child): Ditto. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_fixup_in_child): Simplify. Use new "child_copy" function to copy heap from parent. (_csbrk): Don't attempt allocation if within cygheap section. Fix so that more than one allocation will succeed. (cygheap_init): Reset possibly-nonzero region to zero. * cygheap.h (cygheap_setup_for_child): Delete declaration. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_start): Define as an array. * cygwin.sc: Modernize. Remove unneeded sections. Define cygheap here. * dcrt0.cc (do_exit): Reflect argument change to close_all_files. * dtable.cc (dtable::vfork_parent_restore): Ditto. * dtable.h: Ditto. * fhandler.h: Ditto. * fork.cc (fork_copy): Call ReadProcessMemory if there is no thread (indicating that we're execing). (fork_child): Don't mess with hParent. (fork_parent): Remove hParent stuff. It happens earlier now. Remove call to cygheap_setup_for_child* stuff. (fork): Put child_info_stuff in grouped structure. Issue error if parent handle is not set. (child_copy): New function. * sigproc.cc (child_info::child_info): Put cygheap settings here. Set parent handle. (child_info::~child_info): Close parent handle if it exists. * spawn.cc (spawn_guts): Reorganize so that ciresrv is allocated at only the last minute so that cygheap changes are reflected. Delete cygheap_setup* calls. * syscalls.cc (close_all_files): Add an argument to flag when the fd entry should be released. * winsup.h (close_all_files): Add an argument to close_all_files declaration. Declare child_copy.
2005-06-01 11:46:56 +08:00
/* Copy memory from one process to another. */
bool
child_copy (HANDLE hp, bool write, ...)
* child_info.h (child_info::cygheap_h): Delete. (child_info::dwProcessId): New field. * cygheap.cc (init_cheap): Delete. (dup_now): Ditto. (cygheap_setup_for_child): Ditto. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_fixup_in_child): Simplify. Use new "child_copy" function to copy heap from parent. (_csbrk): Don't attempt allocation if within cygheap section. Fix so that more than one allocation will succeed. (cygheap_init): Reset possibly-nonzero region to zero. * cygheap.h (cygheap_setup_for_child): Delete declaration. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_start): Define as an array. * cygwin.sc: Modernize. Remove unneeded sections. Define cygheap here. * dcrt0.cc (do_exit): Reflect argument change to close_all_files. * dtable.cc (dtable::vfork_parent_restore): Ditto. * dtable.h: Ditto. * fhandler.h: Ditto. * fork.cc (fork_copy): Call ReadProcessMemory if there is no thread (indicating that we're execing). (fork_child): Don't mess with hParent. (fork_parent): Remove hParent stuff. It happens earlier now. Remove call to cygheap_setup_for_child* stuff. (fork): Put child_info_stuff in grouped structure. Issue error if parent handle is not set. (child_copy): New function. * sigproc.cc (child_info::child_info): Put cygheap settings here. Set parent handle. (child_info::~child_info): Close parent handle if it exists. * spawn.cc (spawn_guts): Reorganize so that ciresrv is allocated at only the last minute so that cygheap changes are reflected. Delete cygheap_setup* calls. * syscalls.cc (close_all_files): Add an argument to flag when the fd entry should be released. * winsup.h (close_all_files): Add an argument to close_all_files declaration. Declare child_copy.
2005-06-01 11:46:56 +08:00
{
va_list args;
va_start (args, write);
static const char *huh[] = {"read", "write"};
char *what;
while ((what = va_arg (args, char *)))
{
char *low = va_arg (args, char *);
char *high = va_arg (args, char *);
2013-04-23 17:44:36 +08:00
SIZE_T todo = high - low;
char *here;
for (here = low; here < high; here += todo)
{
2013-04-23 17:44:36 +08:00
SIZE_T done = 0;
if (here + todo > high)
todo = high - here;
int res;
if (write)
res = WriteProcessMemory (hp, here, here, todo, &done);
else
res = ReadProcessMemory (hp, here, here, todo, &done);
*** cygwin DLL Changes: * child_info.h (CURR_CHILD_INFO_MAGIC): Reset. (child_info::dwProcessId): Delete. (child_info::straced): New variable. (child_info::handle_fork): New member function. * dcrt0.cc (in_forkee): New global variable. (__cygwin_user_data::forkee): Mark as obsolete. (do_global_ctors): Use in_forkee rather than user_data->forkee. (get_cygwin_startup_info): Ditto. Deal with new straced field to allow strace to deal with children of attached processes. (initial_env): Accommodate changes to strace::hello. (child_info_fork::handle_fork): Rename from plain old 'handle_fork'. Move alloc_stack() call elsewhere. (dll_crt0_0): Fill out more of user_data. Reference handle_fork via fork_info. Add some debugging output. (_dll_crt0): Don't wait for sync thread if sync_startup is invalid. Zero sync_startup here. Call alloc_stack() here, if appropriate. (dll_crt0_1): Use in_forkee rather than user_data->forkee. (dll_crt0): Ditto. * malloc_wrapper.cc (malloc_init): Ditto. * dll_init.cc (in_forkee): Remove local static version of this variable. (dll_list::load_after_fork): Don't set in_forkee here. * external.cc (cygwin_internal): Use strace method rather than accessing field directly. * fhandler.cc (fhandler_base::read): Ditto. * fhandler_tty.cc (fhandler_tty_common::__acquire_output_mutex): Ditto. * fork.cc (frok::parent): Invoke strace write_childpid to communicate with potential strace. (child_copy): Add more detail to debugging output. * init.cc (calibration_id): New static variable. (prime_threads): Set sync_startup to invalid handle if we already know about thread_func_ix. Use static calibration_id to hold calibration thread id. * munge_threadfunc (munge_threadfunc): Don't try to debug if we don't find threadfunc_ix. (dll_entry): Avoid calling munge_threadfunc and _cygtls::remove on non-cygwin threads invoked during process startup. * pinfo.cc (set_myself): Always call strace.hello here regardless of DEBUGGING. * sigproc.cc (child_info::child_info): Remove spurious handling of dwProcessId. Set straced as appropriate. * spawn.cc (spawn_guts): Rename ciresrv to ch. Invoke strace write_childpid to communicate with potential strace. * strace.cc: Include child_info.h. (strace::hello): Remove inited test. Use active() method to test if strace has been activated. Handle case where we are started before (mypid): New function. (strace::vsprntf): Try to deal more intelligently with case where progname may not be filled out. Put pid in parentheses if it is a windows pid rather than a cygwin pid. myself has been filled out. (strace::write_childpid): New function for notifying strace about the creation of children. (strace::vprntf): Use strace method rather than accessing field directly. (strace_printf): Ditto. (strace::wm): Ditto. * winsup.h (in_forkee): Declare. * include/sys/strace.h (strace::write_childpid): Declare new function. (strace::attached): Define new function. (strace::active): Ditto. (strace::active_val): Ditto. (_STRACE_ON): Delete. (_STRACE_OFF): Ditto. (define_strace0): Use strace method rather than accessing field directly. (strace_printf_wrap): Ditto. (strace_printf_wrap1): Ditto. *** cygwin utils changes: * strace.cc (nprocesses): Make static global. (quiet): New variable. (strace_active): Ditto. (add_child): Increment nprocesses here. Don't add a child if it is already added (windows bug?). Report on child if not quiet. (get_child): Just return NULL if child not found. (remove_child): Report on child if not quiet. (attach_process): Don't complain if given a windows process. Use windows pid in error. (handle_output_debug_string): Issue error if trying to manipulate a process that we don't know about. Handle _STRACE_CHILD_PID - attach to reported child when we get this. (proc_child): Move nprocesses to file scope. Report on exceptions. (longopts): Implement "--quiet". (opts): Implement "-q". (main): Manipulate quiet flag. * utils.sgml (strace): Add words describing '-q'.
2005-12-30 04:46:34 +08:00
debug_printf ("%s - hp %p low %p, high %p, res %d", what, hp, low, high, res);
if (!res || todo != done)
{
if (!res)
__seterrno ();
/* If this happens then there is a bug in our fork
implementation somewhere. */
2013-04-23 17:44:36 +08:00
system_printf ("%s %s copy failed, %p..%p, done %lu, windows pid %u, %E",
what, huh[write], low, high, done, myself->dwProcessId);
goto err;
}
}
}
va_end (args);
debug_printf ("done");
return true;
err:
va_end (args);
TerminateProcess (hp, 1);
set_errno (EAGAIN);
return false;
* child_info.h (child_info::cygheap_h): Delete. (child_info::dwProcessId): New field. * cygheap.cc (init_cheap): Delete. (dup_now): Ditto. (cygheap_setup_for_child): Ditto. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_fixup_in_child): Simplify. Use new "child_copy" function to copy heap from parent. (_csbrk): Don't attempt allocation if within cygheap section. Fix so that more than one allocation will succeed. (cygheap_init): Reset possibly-nonzero region to zero. * cygheap.h (cygheap_setup_for_child): Delete declaration. (cygheap_setup_for_child_cleanup): Ditto. (cygheap_start): Define as an array. * cygwin.sc: Modernize. Remove unneeded sections. Define cygheap here. * dcrt0.cc (do_exit): Reflect argument change to close_all_files. * dtable.cc (dtable::vfork_parent_restore): Ditto. * dtable.h: Ditto. * fhandler.h: Ditto. * fork.cc (fork_copy): Call ReadProcessMemory if there is no thread (indicating that we're execing). (fork_child): Don't mess with hParent. (fork_parent): Remove hParent stuff. It happens earlier now. Remove call to cygheap_setup_for_child* stuff. (fork): Put child_info_stuff in grouped structure. Issue error if parent handle is not set. (child_copy): New function. * sigproc.cc (child_info::child_info): Put cygheap settings here. Set parent handle. (child_info::~child_info): Close parent handle if it exists. * spawn.cc (spawn_guts): Reorganize so that ciresrv is allocated at only the last minute so that cygheap changes are reflected. Delete cygheap_setup* calls. * syscalls.cc (close_all_files): Add an argument to flag when the fd entry should be released. * winsup.h (close_all_files): Add an argument to close_all_files declaration. Declare child_copy.
2005-06-01 11:46:56 +08:00
}