158 lines
4.4 KiB
C++
158 lines
4.4 KiB
C++
/* shared_info.h: shared info for cygwin
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Copyright 2000 Cygnus Solutions.
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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 "tty.h"
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/* Mount table entry */
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class mount_item
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{
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public:
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/* FIXME: Nasty static allocation. Need to have a heap in the shared
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area [with the user being able to configure at runtime the max size]. */
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/* Win32-style mounted partition source ("C:\foo\bar").
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native_path[0] == 0 for unused entries. */
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char native_path[MAX_PATH];
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int native_pathlen;
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/* POSIX-style mount point ("/foo/bar") */
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char posix_path[MAX_PATH];
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int posix_pathlen;
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unsigned flags;
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void init (const char *dev, const char *path, unsigned flags);
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struct mntent *getmntent ();
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};
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/* Warning: Decreasing this value will cause cygwin.dll to ignore existing
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higher numbered registry entries. Don't change this number willy-nilly.
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What we need is to have a more dynamic allocation scheme, but the current
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scheme should be satisfactory for a long while yet. */
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#define MAX_MOUNTS 30
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class reg_key;
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class mount_info
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{
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int posix_sorted[MAX_MOUNTS];
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int native_sorted[MAX_MOUNTS];
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public:
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int nmounts;
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mount_item mount[MAX_MOUNTS];
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/* Strings used by getmntent(). */
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char mnt_type[20];
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char mnt_opts[20];
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char mnt_fsname[MAX_PATH];
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char mnt_dir[MAX_PATH];
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/* cygdrive_prefix is used as the root of the path automatically
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prepended to a path when the path has no associated mount.
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cygdrive_flags are the default flags for the cygdrives. */
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char cygdrive[MAX_PATH];
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size_t cygdrive_len;
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unsigned cygdrive_flags;
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/* Increment when setting up a reg_key if mounts area had to be
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created so we know when we need to import old mount tables. */
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int had_to_create_mount_areas;
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void init ();
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int add_item (const char *dev, const char *path, unsigned flags, int reg_p);
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int del_item (const char *path, unsigned flags, int reg_p);
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void from_registry ();
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int add_reg_mount (const char * native_path, const char * posix_path,
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unsigned mountflags);
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int del_reg_mount (const char * posix_path, unsigned mountflags);
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unsigned set_flags_from_win32_path (const char *path);
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int conv_to_win32_path (const char *src_path, char *win32_path,
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char *full_win32_path, DWORD &devn, int &unit,
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unsigned *flags = NULL);
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int conv_to_posix_path (const char *src_path, char *posix_path,
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int keep_rel_p);
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struct mntent *getmntent (int x);
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int write_cygdrive_info_to_registry (const char *cygdrive_prefix, unsigned flags);
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int remove_cygdrive_info_from_registry (const char *cygdrive_prefix, unsigned flags);
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int get_cygdrive_info (char *user, char *system, char* user_flags,
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char* system_flags);
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void import_v1_mounts ();
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private:
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void sort ();
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void read_mounts (reg_key& r);
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void read_v1_mounts (reg_key r, unsigned which);
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void mount_slash ();
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void to_registry ();
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int cygdrive_win32_path (const char *src, char *dst, int trailing_slash_p);
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void cygdrive_posix_path (const char *src, char *dst, int trailing_slash_p);
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void slash_drive_to_win32_path (const char *path, char *buf, int trailing_slash_p);
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void read_cygdrive_info_from_registry ();
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};
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/******** Close-on-delete queue ********/
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/* First pass at a file deletion queue structure.
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We can't keep this list in the per-process info, since
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one process may open a file, and outlive a process which
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wanted to unlink the file - and the data would go away.
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*/
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#define MAX_DELQUEUES_PENDING 100
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class delqueue_list
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{
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char name[MAX_DELQUEUES_PENDING][MAX_PATH];
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char inuse[MAX_DELQUEUES_PENDING];
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int empty;
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public:
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void init ();
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void queue_file (const char *dosname);
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void process_queue ();
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};
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/******** Shared Info ********/
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/* Data accessible to all tasks */
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class shared_info
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{
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DWORD inited;
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public:
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/* FIXME: Doesn't work if more than one user on system. */
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mount_info mount;
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int heap_chunk_in_mb;
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unsigned heap_chunk_size (void);
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tty_list tty;
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delqueue_list delqueue;
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void initialize (void);
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};
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extern shared_info *cygwin_shared;
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extern HANDLE cygwin_shared_h;
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extern HANDLE console_shared_h;
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void __stdcall shared_init (void);
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void __stdcall shared_terminate (void);
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char *__stdcall shared_name (const char *, int);
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void *__stdcall open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr);
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