newlib-cygwin/winsup/cygwin/shared_info.h

193 lines
5.5 KiB
C
Raw Normal View History

/* shared_info.h: shared info for cygwin
2001-09-12 04:01:02 +08:00
Copyright 2000, 2001 Red Hat, Inc.
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 "tty.h"
/* Mount table entry */
class mount_item
{
public:
/* FIXME: Nasty static allocation. Need to have a heap in the shared
area [with the user being able to configure at runtime the max size]. */
/* Win32-style mounted partition source ("C:\foo\bar").
native_path[0] == 0 for unused entries. */
char native_path[MAX_PATH];
int native_pathlen;
/* POSIX-style mount point ("/foo/bar") */
char posix_path[MAX_PATH];
int posix_pathlen;
unsigned flags;
void init (const char *dev, const char *path, unsigned flags);
struct mntent *getmntent ();
void fnmunge (char *, const char *);
void build_win32 (char *, const char *, unsigned *, unsigned);
};
/* Warning: Decreasing this value will cause cygwin.dll to ignore existing
higher numbered registry entries. Don't change this number willy-nilly.
What we need is to have a more dynamic allocation scheme, but the current
scheme should be satisfactory for a long while yet. */
#define MAX_MOUNTS 30
* Makefile.in: Autogenerate some header files which provide magic numbers. Force dependencies for files which depend on autogenerated headers to ensure that they are always built. * child_info.h (child_info): Add new fields to accommodate new magic number header stuff. * dcrt0.cc: Rely on "child_info_magic.h" to ensure that correct child_info magic numbers are used. (dll_crt0_1): Temporarily remove _cygwin_testing_magic test. (_dll_crt0): Do more testing on magic numbers from fork_info structure. Call "multiple_cygwin_problem" where appropriate. (multiple_cygwin_problem): Rename from multiple_cygwin_die. Issue a warning or die, as appropriate based on cygwin version/magic number mismatch. * pinfo.cc (pinfo::exit): Don't attempt to dereference `this' if it doesn't exist. This can happen when a fatal error occurs early in process initialization. * shared.cc: Rely on "shared_info_magic.h" to accommodate that new magic number header stuff. (shared_info::initialize): Use new magic number stuff, for shared region. (memory_init): Ditto, for mount table. * shared_info.h: Accomodate new magic number stuff for shared region and mount table. * sigproc.cc: Rely on "child_info_magic.h" to accommodate new magic number header stuff. (init_child_info): Initialize new fields in child_info) to accomodate magic numbers. * winsup.h: Rename multiple_cygwin_die to multiple_cygwin_problem. * include/cygwin/version.h: Define macros for manipulating version magic. * cygmagic: New shell script for generating magic numbers.
2001-12-26 12:53:34 +08:00
#define MOUNT_VERSION 27 // increment when mount table changes and
#define MOUNT_VERSION_MAGIC CYGWIN_VERSION_MAGIC (MOUNT_MAGIC, MOUNT_VERSION)
#define CURR_MOUNT_MAGIC 0x4fe431cdU
#define MOUNT_INFO_CB 16488
Throughout, change 'cygwin_shared.mount' to 'mount_table'. * child_info.h (child_info): Move shared_h, console_h to cygheap. Add mount_h. * cygheap.h (init_cygheap): Add shared_h, console_h. * cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared memory regions. Initialize cygheap->user name here. * dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants. Remove cygheap_init since it is done in shared_init now. (_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization. * fhandler_console.cc (console_shared_h): Eliminate. (get_tty_stuff): Use cygheap->console_h rather than console_shared_h. * heap.cc (heap_init): Use page size constant calculated earlier in initialization. * shared.cc: Eliminate cygwin_shared_h. Add cygwin_mount_h. (mount_table_init): New function for initializing a user mount table. (open_shared_file_map): Use constant for shared memory region. Initialize cygheap and mount table here. (open_shared): Improve debugging output. (shared_info::initialize): Eliminate call to mount.init. (shared_terminate): Use cygheap->shared_h. Close cygwin_mount_h. (open_shared_file_map): Eliminate. * shared_info.h (mount_info): Add a version field. (shared_align_past): New macro for calculating location for shared memory regions. * sigproc.cc (init_child_info): Eliminate shared_h, console_h. * spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user. * syscalls.cc (system_info): New global holding system memory defaults. (getpagesize): Use system_info. * uinfo.cc (internal_getlogin): Only fill in user name if nonexistent. * winsup.h: Declare system_info. * passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving the name again.
2001-01-28 13:51:15 +08:00
class reg_key;
2001-12-26 14:18:41 +08:00
/* NOTE: Do not make gratuitous changes to the names or organization of the
below class. The layout is checksummed to determine compatibility between
different cygwin versions. */
class mount_info
{
public:
Throughout, change 'cygwin_shared.mount' to 'mount_table'. * child_info.h (child_info): Move shared_h, console_h to cygheap. Add mount_h. * cygheap.h (init_cygheap): Add shared_h, console_h. * cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared memory regions. Initialize cygheap->user name here. * dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants. Remove cygheap_init since it is done in shared_init now. (_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization. * fhandler_console.cc (console_shared_h): Eliminate. (get_tty_stuff): Use cygheap->console_h rather than console_shared_h. * heap.cc (heap_init): Use page size constant calculated earlier in initialization. * shared.cc: Eliminate cygwin_shared_h. Add cygwin_mount_h. (mount_table_init): New function for initializing a user mount table. (open_shared_file_map): Use constant for shared memory region. Initialize cygheap and mount table here. (open_shared): Improve debugging output. (shared_info::initialize): Eliminate call to mount.init. (shared_terminate): Use cygheap->shared_h. Close cygwin_mount_h. (open_shared_file_map): Eliminate. * shared_info.h (mount_info): Add a version field. (shared_align_past): New macro for calculating location for shared memory regions. * sigproc.cc (init_child_info): Eliminate shared_h, console_h. * spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user. * syscalls.cc (system_info): New global holding system memory defaults. (getpagesize): Use system_info. * uinfo.cc (internal_getlogin): Only fill in user name if nonexistent. * winsup.h: Declare system_info. * passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving the name again.
2001-01-28 13:51:15 +08:00
DWORD version;
unsigned cb;
DWORD sys_mount_table_counter;
int nmounts;
mount_item mount[MAX_MOUNTS];
/* cygdrive_prefix is used as the root of the path automatically
prepended to a path when the path has no associated mount.
cygdrive_flags are the default flags for the cygdrives. */
char cygdrive[MAX_PATH];
size_t cygdrive_len;
unsigned cygdrive_flags;
private:
Throughout, change 'cygwin_shared.mount' to 'mount_table'. * child_info.h (child_info): Move shared_h, console_h to cygheap. Add mount_h. * cygheap.h (init_cygheap): Add shared_h, console_h. * cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared memory regions. Initialize cygheap->user name here. * dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants. Remove cygheap_init since it is done in shared_init now. (_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization. * fhandler_console.cc (console_shared_h): Eliminate. (get_tty_stuff): Use cygheap->console_h rather than console_shared_h. * heap.cc (heap_init): Use page size constant calculated earlier in initialization. * shared.cc: Eliminate cygwin_shared_h. Add cygwin_mount_h. (mount_table_init): New function for initializing a user mount table. (open_shared_file_map): Use constant for shared memory region. Initialize cygheap and mount table here. (open_shared): Improve debugging output. (shared_info::initialize): Eliminate call to mount.init. (shared_terminate): Use cygheap->shared_h. Close cygwin_mount_h. (open_shared_file_map): Eliminate. * shared_info.h (mount_info): Add a version field. (shared_align_past): New macro for calculating location for shared memory regions. * sigproc.cc (init_child_info): Eliminate shared_h, console_h. * spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user. * syscalls.cc (system_info): New global holding system memory defaults. (getpagesize): Use system_info. * uinfo.cc (internal_getlogin): Only fill in user name if nonexistent. * winsup.h: Declare system_info. * passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving the name again.
2001-01-28 13:51:15 +08:00
int posix_sorted[MAX_MOUNTS];
int native_sorted[MAX_MOUNTS];
public:
/* Increment when setting up a reg_key if mounts area had to be
created so we know when we need to import old mount tables. */
int had_to_create_mount_areas;
void init ();
int add_item (const char *dev, const char *path, unsigned flags, int reg_p);
int del_item (const char *path, unsigned flags, int reg_p);
void from_registry ();
int add_reg_mount (const char * native_path, const char * posix_path,
unsigned mountflags);
int del_reg_mount (const char * posix_path, unsigned mountflags);
unsigned set_flags_from_win32_path (const char *path);
int conv_to_win32_path (const char *src_path, char *dst, DWORD &devn,
int &unit, unsigned *flags = NULL, bool no_normalize = 0);
int conv_to_posix_path (const char *src_path, char *posix_path,
int keep_rel_p);
struct mntent *getmntent (int x);
int write_cygdrive_info_to_registry (const char *cygdrive_prefix, unsigned flags);
int remove_cygdrive_info_from_registry (const char *cygdrive_prefix, unsigned flags);
int get_cygdrive_info (char *user, char *system, char* user_flags,
char* system_flags);
private:
void sort ();
void read_mounts (reg_key& r);
void mount_slash ();
void to_registry ();
* path.cc (conv_path_list): Fix wild indexing into path due to conflicting methods for setting src pointer. * dir.cc (opendir): Only pass path_conv argument to opendir, since name is already part of the fhandler. * dtable.cc (dtable::build_fhandler): Accomodate new FH_CYGDRIVE type. * fhandler.cc (fhandler_base::opendir): Nuke name argument. * fhandler.h: Add FH_CYGDRIVE to "device" enum. (fhandler_base::opendir): Nuke name argument. (fhandler_disk_file::opendir): Ditto. (fhandler_disk_file::fhandler_disk_file): Declare new method which passes devtype through. (fhandler_cygdrive): Add elements for tracking drives. (fhandler_cygdrive::set_drives): Declare new method. (fhandler_cygdrive::iscygdrive_root): Declare new method. (fhandler_cygdrive::opendir): Declare new method. (fhandler_cygdrive::readdir): Declare new method. (fhandler_cygdrive::telldir): Declare new method. (fhandler_cygdrive::seekdir): Declare new method. (fhandler_cygdrive::rewinddir): Declare new method. (fhandler_cygdrive::closedir): Declare new method. (fhandler_cygdrive::fstat): Declare new method. * fhandler_disk_file.cc (fhandler_disk_file::fhandler_disk_file): Define new method which passes devtype through. (fhandler_disk_file::open): Tweak debug output. (fhandler_disk_file::opendir): Nuke first argument. Use info from path_conv and class rather than calling fstat. (fhandler_cygdrive::set_drives): New method. (fhandler_cygdrive::iscygdrive_root): New method. (fhandler_cygdrive::opendir): New method. (fhandler_cygdrive::readdir): New method. (fhandler_cygdrive::telldir): New method. (fhandler_cygdrive::seekdir): New method. (fhandler_cygdrive::rewinddir): New method. (fhandler_cygdrive::closedir): New method. (fhandler_cygdrive::fstat): New method. * path.cc (iscygdrive_device): Assume cygdriveness is already verified. (path_conv::check): Treat FH_CYGDRIVE "method" as a special case, setting file attributes as needed. (mount_info::conv_to_win32_path): Allow stand-alone /cygdrive, meaning "the directory which contains all of the drives on the system". (fillout_mntent): Use cyg_tolower for conversions. (mount_info::cygdrive_win32_path): Replace unused argument with unit number. * shared_info.h (mount_info::cygdrive_win32_path): Reflect argument change.
2001-11-22 13:59:07 +08:00
int cygdrive_win32_path (const char *src, char *dst, int& unit);
void cygdrive_posix_path (const char *src, char *dst, int trailing_slash_p);
void read_cygdrive_info_from_registry ();
};
/******** Close-on-delete queue ********/
/* First pass at a file deletion queue structure.
We can't keep this list in the per-process info, since
one process may open a file, and outlive a process which
wanted to unlink the file - and the data would go away.
*/
#define MAX_DELQUEUES_PENDING 100
class delqueue_list
{
char name[MAX_DELQUEUES_PENDING][MAX_PATH];
char inuse[MAX_DELQUEUES_PENDING];
int empty;
public:
void init ();
void queue_file (const char *dosname);
void process_queue ();
};
/******** Shared Info ********/
/* Data accessible to all tasks */
* Makefile.in: Autogenerate some header files which provide magic numbers. Force dependencies for files which depend on autogenerated headers to ensure that they are always built. * child_info.h (child_info): Add new fields to accommodate new magic number header stuff. * dcrt0.cc: Rely on "child_info_magic.h" to ensure that correct child_info magic numbers are used. (dll_crt0_1): Temporarily remove _cygwin_testing_magic test. (_dll_crt0): Do more testing on magic numbers from fork_info structure. Call "multiple_cygwin_problem" where appropriate. (multiple_cygwin_problem): Rename from multiple_cygwin_die. Issue a warning or die, as appropriate based on cygwin version/magic number mismatch. * pinfo.cc (pinfo::exit): Don't attempt to dereference `this' if it doesn't exist. This can happen when a fatal error occurs early in process initialization. * shared.cc: Rely on "shared_info_magic.h" to accommodate that new magic number header stuff. (shared_info::initialize): Use new magic number stuff, for shared region. (memory_init): Ditto, for mount table. * shared_info.h: Accomodate new magic number stuff for shared region and mount table. * sigproc.cc: Rely on "child_info_magic.h" to accommodate new magic number header stuff. (init_child_info): Initialize new fields in child_info) to accomodate magic numbers. * winsup.h: Rename multiple_cygwin_die to multiple_cygwin_problem. * include/cygwin/version.h: Define macros for manipulating version magic. * cygmagic: New shell script for generating magic numbers.
2001-12-26 12:53:34 +08:00
#define SHARED_VERSION (unsigned)(cygwin_version.api_major << 8 | \
cygwin_version.api_minor)
#define SHARED_VERSION_MAGIC CYGWIN_VERSION_MAGIC (SHARED_MAGIC, SHARED_VERSION)
#define SHARED_INFO_CB 47112
#define CURR_SHARED_MAGIC 0x359218a2U
* Makefile.in: Autogenerate some header files which provide magic numbers. Force dependencies for files which depend on autogenerated headers to ensure that they are always built. * child_info.h (child_info): Add new fields to accommodate new magic number header stuff. * dcrt0.cc: Rely on "child_info_magic.h" to ensure that correct child_info magic numbers are used. (dll_crt0_1): Temporarily remove _cygwin_testing_magic test. (_dll_crt0): Do more testing on magic numbers from fork_info structure. Call "multiple_cygwin_problem" where appropriate. (multiple_cygwin_problem): Rename from multiple_cygwin_die. Issue a warning or die, as appropriate based on cygwin version/magic number mismatch. * pinfo.cc (pinfo::exit): Don't attempt to dereference `this' if it doesn't exist. This can happen when a fatal error occurs early in process initialization. * shared.cc: Rely on "shared_info_magic.h" to accommodate that new magic number header stuff. (shared_info::initialize): Use new magic number stuff, for shared region. (memory_init): Ditto, for mount table. * shared_info.h: Accomodate new magic number stuff for shared region and mount table. * sigproc.cc: Rely on "child_info_magic.h" to accommodate new magic number header stuff. (init_child_info): Initialize new fields in child_info) to accomodate magic numbers. * winsup.h: Rename multiple_cygwin_die to multiple_cygwin_problem. * include/cygwin/version.h: Define macros for manipulating version magic. * cygmagic: New shell script for generating magic numbers.
2001-12-26 12:53:34 +08:00
2001-12-26 14:18:41 +08:00
/* NOTE: Do not make gratuitous changes to the names or organization of the
below class. The layout is checksummed to determine compatibility between
different cygwin versions. */
class shared_info
{
DWORD version;
DWORD cb;
public:
unsigned heap_chunk;
DWORD sys_mount_table_counter;
tty_list tty;
delqueue_list delqueue;
void initialize ();
unsigned heap_chunk_size ();
};
extern shared_info *cygwin_shared;
Throughout, change 'cygwin_shared.mount' to 'mount_table'. * child_info.h (child_info): Move shared_h, console_h to cygheap. Add mount_h. * cygheap.h (init_cygheap): Add shared_h, console_h. * cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared memory regions. Initialize cygheap->user name here. * dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants. Remove cygheap_init since it is done in shared_init now. (_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization. * fhandler_console.cc (console_shared_h): Eliminate. (get_tty_stuff): Use cygheap->console_h rather than console_shared_h. * heap.cc (heap_init): Use page size constant calculated earlier in initialization. * shared.cc: Eliminate cygwin_shared_h. Add cygwin_mount_h. (mount_table_init): New function for initializing a user mount table. (open_shared_file_map): Use constant for shared memory region. Initialize cygheap and mount table here. (open_shared): Improve debugging output. (shared_info::initialize): Eliminate call to mount.init. (shared_terminate): Use cygheap->shared_h. Close cygwin_mount_h. (open_shared_file_map): Eliminate. * shared_info.h (mount_info): Add a version field. (shared_align_past): New macro for calculating location for shared memory regions. * sigproc.cc (init_child_info): Eliminate shared_h, console_h. * spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user. * syscalls.cc (system_info): New global holding system memory defaults. (getpagesize): Use system_info. * uinfo.cc (internal_getlogin): Only fill in user name if nonexistent. * winsup.h: Declare system_info. * passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving the name again.
2001-01-28 13:51:15 +08:00
extern mount_info *mount_table;
extern HANDLE cygwin_mount_h;
enum shared_locations
{
SH_CYGWIN_SHARED,
SH_MOUNT_TABLE,
SH_SHARED_CONSOLE,
SH_MYSELF,
SH_TOTAL_SIZE
};
void __stdcall memory_init ();
Throughout, change 'cygwin_shared.mount' to 'mount_table'. * child_info.h (child_info): Move shared_h, console_h to cygheap. Add mount_h. * cygheap.h (init_cygheap): Add shared_h, console_h. * cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared memory regions. Initialize cygheap->user name here. * dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants. Remove cygheap_init since it is done in shared_init now. (_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization. * fhandler_console.cc (console_shared_h): Eliminate. (get_tty_stuff): Use cygheap->console_h rather than console_shared_h. * heap.cc (heap_init): Use page size constant calculated earlier in initialization. * shared.cc: Eliminate cygwin_shared_h. Add cygwin_mount_h. (mount_table_init): New function for initializing a user mount table. (open_shared_file_map): Use constant for shared memory region. Initialize cygheap and mount table here. (open_shared): Improve debugging output. (shared_info::initialize): Eliminate call to mount.init. (shared_terminate): Use cygheap->shared_h. Close cygwin_mount_h. (open_shared_file_map): Eliminate. * shared_info.h (mount_info): Add a version field. (shared_align_past): New macro for calculating location for shared memory regions. * sigproc.cc (init_child_info): Eliminate shared_h, console_h. * spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user. * syscalls.cc (system_info): New global holding system memory defaults. (getpagesize): Use system_info. * uinfo.cc (internal_getlogin): Only fill in user name if nonexistent. * winsup.h: Declare system_info. * passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving the name again.
2001-01-28 13:51:15 +08:00
#define shared_align_past(p) \
((char *) (system_info.dwAllocationGranularity * \
(((DWORD) ((p) + 1) + system_info.dwAllocationGranularity - 1) / \
system_info.dwAllocationGranularity)))
#define cygwin_shared_address ((void *) 0xa000000)
#ifdef FHDEVN
struct console_state
{
tty_min tty_min_state;
dev_console dev_state;
};
#endif
Throughout, change 'cygwin_shared.mount' to 'mount_table'. * child_info.h (child_info): Move shared_h, console_h to cygheap. Add mount_h. * cygheap.h (init_cygheap): Add shared_h, console_h. * cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared memory regions. Initialize cygheap->user name here. * dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants. Remove cygheap_init since it is done in shared_init now. (_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization. * fhandler_console.cc (console_shared_h): Eliminate. (get_tty_stuff): Use cygheap->console_h rather than console_shared_h. * heap.cc (heap_init): Use page size constant calculated earlier in initialization. * shared.cc: Eliminate cygwin_shared_h. Add cygwin_mount_h. (mount_table_init): New function for initializing a user mount table. (open_shared_file_map): Use constant for shared memory region. Initialize cygheap and mount table here. (open_shared): Improve debugging output. (shared_info::initialize): Eliminate call to mount.init. (shared_terminate): Use cygheap->shared_h. Close cygwin_mount_h. (open_shared_file_map): Eliminate. * shared_info.h (mount_info): Add a version field. (shared_align_past): New macro for calculating location for shared memory regions. * sigproc.cc (init_child_info): Eliminate shared_h, console_h. * spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user. * syscalls.cc (system_info): New global holding system memory defaults. (getpagesize): Use system_info. * uinfo.cc (internal_getlogin): Only fill in user name if nonexistent. * winsup.h: Declare system_info. * passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving the name again.
2001-01-28 13:51:15 +08:00
char *__stdcall shared_name (char *, const char *, int);
void *__stdcall open_shared (const char *name, int n, HANDLE &shared_h, DWORD size, shared_locations);