mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-28 10:00:23 +08:00
44d2fc0a45
* 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.
525 lines
12 KiB
C++
525 lines
12 KiB
C++
/* external.cc: Interface to Cygwin internals from external programs.
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Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
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Written by Christopher Faylor <cgf@cygnus.com>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include "sigproc.h"
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#include "pinfo.h"
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#include "shared_info.h"
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#include "cygwin_version.h"
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#include "cygerrno.h"
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#include "path.h"
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#include "fhandler.h"
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#include "dtable.h"
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#include "cygheap.h"
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#include "heap.h"
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#include "cygtls.h"
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#include "child_info.h"
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#include "environ.h"
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#include "cygserver_setpwd.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <iptypes.h>
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child_info *get_cygwin_startup_info ();
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static void exit_process (UINT, bool) __attribute__((noreturn));
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static winpids pids;
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static external_pinfo *
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fillout_pinfo (pid_t pid, int winpid)
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{
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BOOL nextpid;
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static external_pinfo ep;
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static char ep_progname_long_buf[NT_MAX_PATH];
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if ((nextpid = !!(pid & CW_NEXTPID)))
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pid ^= CW_NEXTPID;
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static unsigned int i;
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if (!pids.npids || !nextpid)
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{
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pids.set (winpid);
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i = 0;
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}
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if (!pid)
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i = 0;
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memset (&ep, 0, sizeof ep);
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while (i < pids.npids)
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{
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DWORD thispid = pids.winpid (i);
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_pinfo *p = pids[i];
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i++;
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if (!p)
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{
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if (!nextpid && thispid != (DWORD) pid)
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continue;
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ep.pid = cygwin_pid (thispid);
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ep.dwProcessId = thispid;
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ep.process_state = PID_IN_USE;
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ep.ctty = -1;
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break;
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}
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else if (nextpid || p->pid == pid || (winpid && thispid == (DWORD) pid))
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{
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ep.ctty = iscons_dev (p->ctty) ? p->ctty : device::minor (p->ctty);
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ep.pid = p->pid;
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ep.ppid = p->ppid;
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ep.dwProcessId = p->dwProcessId;
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ep.uid = p->uid;
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ep.gid = p->gid;
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ep.pgid = p->pgid;
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ep.sid = p->sid;
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ep.umask = 0;
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ep.start_time = p->start_time;
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ep.rusage_self = p->rusage_self;
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ep.rusage_children = p->rusage_children;
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ep.progname[0] = '\0';
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sys_wcstombs(ep.progname, MAX_PATH, p->progname);
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ep.strace_mask = 0;
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ep.version = EXTERNAL_PINFO_VERSION;
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ep.process_state = p->process_state;
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ep.uid32 = p->uid;
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ep.gid32 = p->gid;
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ep.progname_long = ep_progname_long_buf;
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sys_wcstombs(ep.progname_long, NT_MAX_PATH, p->progname);
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break;
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}
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}
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if (!ep.pid)
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{
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i = 0;
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pids.reset ();
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return 0;
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}
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return &ep;
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}
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static inline DWORD
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get_cygdrive_info (char *user, char *system, char *user_flags,
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char *system_flags)
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{
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int res = mount_table->get_cygdrive_info (user, system, user_flags,
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system_flags);
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return (res == ERROR_SUCCESS) ? 1 : 0;
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}
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static DWORD
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check_ntsec (const char *filename)
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{
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if (!filename)
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return true;
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path_conv pc (filename);
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return pc.has_acls ();
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}
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/* Copy cygwin environment variables to the Windows environment. */
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static void
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sync_winenv ()
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{
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int unused_envc;
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PWCHAR envblock = NULL;
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char **envp = build_env (cur_environ (), envblock, unused_envc, false);
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PWCHAR p = envblock;
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if (envp)
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{
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for (char **e = envp; *e; e++)
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cfree (*e);
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cfree (envp);
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}
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if (!p)
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return;
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while (*p)
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{
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PWCHAR eq = wcschr (p, L'=');
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if (eq)
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{
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*eq = L'\0';
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SetEnvironmentVariableW (p, ++eq);
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p = eq;
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}
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p = wcschr (p, L'\0') + 1;
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}
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free (envblock);
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}
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/*
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* Cygwin-specific wrapper for win32 ExitProcess and TerminateProcess.
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* It ensures that the correct exit code, derived from the specified
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* status value, will be made available to this process's parent (if
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* that parent is also a cygwin process). If useTerminateProcess is
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* true, then TerminateProcess(GetCurrentProcess(),...) will be used;
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* otherwise, ExitProcess(...) is called.
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*
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* Used by startup code for cygwin processes which is linked statically
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* into applications, and is not part of the cygwin DLL -- which is why
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* this interface is exposed. "Normal" programs should use ANSI exit(),
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* ANSI abort(), or POSIX _exit(), rather than this function -- because
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* calling ExitProcess or TerminateProcess, even through this wrapper,
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* skips much of the cygwin process cleanup code.
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*/
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static void
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exit_process (UINT status, bool useTerminateProcess)
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{
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pid_t pid = getpid ();
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external_pinfo * ep = fillout_pinfo (pid, 1);
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DWORD dwpid = ep ? ep->dwProcessId : pid;
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pinfo p (pid, PID_MAP_RW);
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if ((dwpid == GetCurrentProcessId()) && (p->pid == ep->pid))
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p.set_exit_code ((DWORD)status);
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if (useTerminateProcess)
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TerminateProcess (GetCurrentProcess(), status);
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/* avoid 'else' clause to silence warning */
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ExitProcess (status);
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}
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extern "C" unsigned long
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cygwin_internal (cygwin_getinfo_types t, ...)
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{
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va_list arg;
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uintptr_t res = (uintptr_t) -1;
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va_start (arg, t);
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switch (t)
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{
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case CW_LOCK_PINFO:
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res = 1;
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break;
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case CW_UNLOCK_PINFO:
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res = 1;
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break;
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case CW_GETTHREADNAME:
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res = (DWORD) cygthread::name (va_arg (arg, DWORD));
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break;
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case CW_SETTHREADNAME:
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{
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set_errno (ENOSYS);
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res = 0;
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}
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break;
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case CW_GETPINFO:
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res = (DWORD) fillout_pinfo (va_arg (arg, DWORD), 0);
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break;
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case CW_GETVERSIONINFO:
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res = (DWORD) cygwin_version_strings;
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break;
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case CW_READ_V1_MOUNT_TABLES:
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set_errno (ENOSYS);
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res = 1;
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break;
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case CW_USER_DATA:
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/* This is a kludge to work around a version of _cygwin_common_crt0
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which overwrote the cxx_malloc field with the local DLL copy.
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Hilarity ensues if the DLL is not loaded like while the process
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is forking. */
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__cygwin_user_data.cxx_malloc = &default_cygwin_cxx_malloc;
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res = (DWORD) &__cygwin_user_data;
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break;
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case CW_PERFILE:
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perfile_table = va_arg (arg, struct __cygwin_perfile *);
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res = 0;
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break;
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case CW_GET_CYGDRIVE_PREFIXES:
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{
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char *user = va_arg (arg, char *);
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char *system = va_arg (arg, char *);
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res = get_cygdrive_info (user, system, NULL, NULL);
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}
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break;
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case CW_GETPINFO_FULL:
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res = (DWORD) fillout_pinfo (va_arg (arg, pid_t), 1);
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break;
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case CW_INIT_EXCEPTIONS:
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/* noop */ /* init_exceptions (va_arg (arg, exception_list *)); */
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res = 0;
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break;
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case CW_GET_CYGDRIVE_INFO:
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{
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char *user = va_arg (arg, char *);
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char *system = va_arg (arg, char *);
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char *user_flags = va_arg (arg, char *);
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char *system_flags = va_arg (arg, char *);
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res = get_cygdrive_info (user, system, user_flags, system_flags);
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}
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break;
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case CW_SET_CYGWIN_REGISTRY_NAME:
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case CW_GET_CYGWIN_REGISTRY_NAME:
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res = 0;
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break;
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case CW_STRACE_TOGGLE:
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{
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pid_t pid = va_arg (arg, pid_t);
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pinfo p (pid);
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if (p)
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{
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sig_send (p, __SIGSTRACE);
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res = 0;
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}
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else
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{
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set_errno (ESRCH);
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res = (DWORD) -1;
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}
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}
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break;
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case CW_STRACE_ACTIVE:
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{
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res = strace.active ();
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}
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break;
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case CW_CYGWIN_PID_TO_WINPID:
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{
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pinfo p (va_arg (arg, pid_t));
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res = p ? p->dwProcessId : 0;
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}
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break;
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case CW_EXTRACT_DOMAIN_AND_USER:
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{
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WCHAR nt_domain[MAX_DOMAIN_NAME_LEN + 1];
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WCHAR nt_user[UNLEN + 1];
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struct passwd *pw = va_arg (arg, struct passwd *);
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char *domain = va_arg (arg, char *);
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char *user = va_arg (arg, char *);
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extract_nt_dom_user (pw, nt_domain, nt_user);
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if (domain)
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sys_wcstombs (domain, MAX_DOMAIN_NAME_LEN + 1, nt_domain);
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if (user)
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sys_wcstombs (user, UNLEN + 1, nt_user);
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res = 0;
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}
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break;
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case CW_CMDLINE:
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{
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size_t n;
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pid_t pid = va_arg (arg, pid_t);
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pinfo p (pid);
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res = (DWORD) p->cmdline (n);
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}
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break;
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case CW_CHECK_NTSEC:
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{
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char *filename = va_arg (arg, char *);
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res = check_ntsec (filename);
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}
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break;
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case CW_GET_ERRNO_FROM_WINERROR:
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{
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int error = va_arg (arg, int);
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int deferrno = va_arg (arg, int);
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res = geterrno_from_win_error (error, deferrno);
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}
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break;
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case CW_GET_POSIX_SECURITY_ATTRIBUTE:
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{
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path_conv dummy;
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security_descriptor sd;
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int attribute = va_arg (arg, int);
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PSECURITY_ATTRIBUTES psa = va_arg (arg, PSECURITY_ATTRIBUTES);
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void *sd_buf = va_arg (arg, void *);
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DWORD sd_buf_size = va_arg (arg, DWORD);
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set_security_attribute (dummy, attribute, psa, sd);
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if (!psa->lpSecurityDescriptor)
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res = sd.size ();
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else
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{
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psa->lpSecurityDescriptor = sd_buf;
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res = sd.copy (sd_buf, sd_buf_size);
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}
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}
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break;
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case CW_GET_SHMLBA:
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{
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res = getpagesize ();
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}
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break;
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case CW_GET_UID_FROM_SID:
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{
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cygpsid psid = va_arg (arg, PSID);
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res = psid.get_id (false, NULL);
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}
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break;
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case CW_GET_GID_FROM_SID:
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{
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cygpsid psid = va_arg (arg, PSID);
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res = psid.get_id (true, NULL);
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}
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break;
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case CW_GET_BINMODE:
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{
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const char *path = va_arg (arg, const char *);
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path_conv p (path, PC_SYM_FOLLOW | PC_NULLEMPTY);
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if (p.error)
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{
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set_errno (p.error);
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res = (unsigned long) -1;
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}
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else
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res = p.binmode ();
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}
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break;
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case CW_HOOK:
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{
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const char *name = va_arg (arg, const char *);
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const void *hookfn = va_arg (arg, const void *);
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WORD subsys;
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res = (unsigned long) hook_or_detect_cygwin (name, hookfn, subsys);
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}
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break;
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case CW_ARGV:
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{
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child_info_spawn *ci = (child_info_spawn *) get_cygwin_startup_info ();
|
|
res = (unsigned long) (ci ? ci->moreinfo->argv : NULL);
|
|
}
|
|
break;
|
|
case CW_ENVP:
|
|
{
|
|
child_info_spawn *ci = (child_info_spawn *) get_cygwin_startup_info ();
|
|
res = (unsigned long) (ci ? ci->moreinfo->envp : NULL);
|
|
}
|
|
break;
|
|
case CW_DEBUG_SELF:
|
|
error_start_init (va_arg (arg, const char *));
|
|
try_to_debug ();
|
|
break;
|
|
case CW_SYNC_WINENV:
|
|
sync_winenv ();
|
|
res = 0;
|
|
break;
|
|
case CW_CYGTLS_PADSIZE:
|
|
res = CYGTLS_PADSIZE;
|
|
break;
|
|
case CW_SET_DOS_FILE_WARNING:
|
|
{
|
|
extern bool dos_file_warning;
|
|
dos_file_warning = va_arg (arg, int);
|
|
res = 0;
|
|
}
|
|
break;
|
|
case CW_SET_PRIV_KEY:
|
|
{
|
|
const char *passwd = va_arg (arg, const char *);
|
|
const char *username = va_arg (arg, const char *);
|
|
res = setlsapwd (passwd, username);
|
|
}
|
|
break;
|
|
case CW_SETERRNO:
|
|
{
|
|
const char *file = va_arg (arg, const char *);
|
|
int line = va_arg (arg, int);
|
|
seterrno(file, line);
|
|
res = 0;
|
|
}
|
|
break;
|
|
case CW_EXIT_PROCESS:
|
|
{
|
|
UINT status = va_arg (arg, UINT);
|
|
int useTerminateProcess = va_arg (arg, int);
|
|
exit_process (status, !!useTerminateProcess); /* no return */
|
|
}
|
|
case CW_SET_EXTERNAL_TOKEN:
|
|
{
|
|
HANDLE token = va_arg (arg, HANDLE);
|
|
int type = va_arg (arg, int);
|
|
set_imp_token (token, type);
|
|
res = 0;
|
|
}
|
|
break;
|
|
case CW_GET_INSTKEY:
|
|
{
|
|
extern WCHAR installation_key_buf[18];
|
|
PWCHAR dest = va_arg (arg, PWCHAR);
|
|
wcscpy (dest, installation_key_buf);
|
|
res = 0;
|
|
}
|
|
break;
|
|
case CW_INT_SETLOCALE:
|
|
{
|
|
extern void internal_setlocale ();
|
|
internal_setlocale ();
|
|
res = 0;
|
|
}
|
|
break;
|
|
case CW_CVT_MNT_OPTS:
|
|
{
|
|
extern bool fstab_read_flags (char **, unsigned &, bool);
|
|
char **option_string = va_arg (arg, char **);
|
|
if (!option_string || !*option_string)
|
|
set_errno (EINVAL);
|
|
else
|
|
{
|
|
unsigned *pflags = va_arg (arg, unsigned *);
|
|
unsigned flags = pflags ? *pflags : 0;
|
|
if (fstab_read_flags (option_string, flags, true))
|
|
{
|
|
if (pflags)
|
|
*pflags = flags;
|
|
res = 0;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case CW_LST_MNT_OPTS:
|
|
{
|
|
extern char *fstab_list_flags ();
|
|
char **option_string = va_arg (arg, char **);
|
|
if (!option_string)
|
|
set_errno (EINVAL);
|
|
else
|
|
{
|
|
*option_string = fstab_list_flags ();
|
|
if (*option_string)
|
|
res = 0;
|
|
}
|
|
}
|
|
break;
|
|
case CW_STRERROR:
|
|
{
|
|
int err = va_arg (arg, int);
|
|
res = (uintptr_t) strerror (err);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
set_errno (ENOSYS);
|
|
}
|
|
va_end (arg);
|
|
return res;
|
|
}
|