newlib/winsup/cygwin/shared_info.h

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/* shared_info.h: shared info for cygwin
Copyright 2000 Cygnus Solutions.
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 ();
};
/* 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
#define MOUNT_VERSION 0x01010103
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.
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class reg_key;
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.
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DWORD version;
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.
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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);
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);
void import_v1_mounts ();
private:
void sort ();
void read_mounts (reg_key& r);
void read_v1_mounts (reg_key r, unsigned which);
void mount_slash ();
void to_registry ();
int cygdrive_win32_path (const char *src, char *dst, int trailing_slash_p);
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 */
class shared_info
{
DWORD inited;
public:
int heap_chunk_in_mb;
DWORD sys_mount_table_counter;
tty_list tty;
delqueue_list delqueue;
void initialize (void);
unsigned heap_chunk_size (void);
};
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.
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extern mount_info *mount_table;
extern HANDLE cygwin_mount_h;
void __stdcall memory_init (void);
void __stdcall shared_terminate (void);
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.
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#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)
#define mount_table_address shared_align_past (cygwin_shared)
#define cygheap_address shared_align_past ((mount_info *) shared_align_past (cygwin_shared))
char *__stdcall shared_name (const char *, int);
void *__stdcall open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr);