1 files changed, 130 insertions, 0 deletions
diff --git a/winsup/cygwin/shared_info.h b/winsup/cygwin/shared_info.h
new file mode 100644
index 000000000..52c055989
--- /dev/null
+++ b/winsup/cygwin/shared_info.h
@@ -0,0 +1,130 @@
+/* shared_sec.h: shared info for cygwin
+
+   Copyright 1998, 1999, 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. */
+
+/* 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
+
+class mount_info
+{
+  int posix_sorted[MAX_MOUNTS];
+  int native_sorted[MAX_MOUNTS];
+public:
+  int nmounts;
+  mount_item mount[MAX_MOUNTS];
+
+  /* Strings used by getmntent(). */
+  char mnt_type[20];
+  char mnt_opts[20];
+  char mnt_fsname[MAX_PATH];
+  char mnt_dir[MAX_PATH];
+
+  /* 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;
+
+  /* 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 *win32_path,
+			  char *full_win32_path, 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_prefixes (char *user, char *system);
+
+  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 slash_drive_to_win32_path (const char *path, char *buf, int trailing_slash_p);
+  void read_cygdrive_info_from_registry ();
+};
+
+/******** Shared Info ********/
+/* Data accessible to all tasks */
+
+class shared_info
+{
+  DWORD inited;
+
+public:
+  /* FIXME: Doesn't work if more than one user on system. */
+  mount_info mount;
+
+  int heap_chunk_in_mb;
+  unsigned heap_chunk_size (void);
+
+  tty_list tty;
+  delqueue_list delqueue;
+  void initialize (void);
+};
+
+extern shared_info *cygwin_shared;
+extern HANDLE cygwin_shared_h;
+extern HANDLE console_shared_h;
+
+void __stdcall shared_init (void);
+void __stdcall shared_terminate (void);
+
+char *__stdcall shared_name (const char *, int);
+void *__stdcall open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr);