newlib-cygwin/winsup/cygwin/mount.h

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/* mount.h: mount definitions.
Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005,
Remove unneeded header files from source files throughout. Update copyrights where appropriate. * globals.cc: New file for generic global variables. * mkglobals_h: New file to generate globals.h. * mkstatic: New Script used to build a (currently non-working) static libcygwin_s.a. * Makefile.in: Add unused rule to build a non-working libcygwin_s.a. (DLL_OFILES): Add globals.o. Make all objects rely on globals.h. (globals.h): New target. Generate globals.h. * cygtls.h: Honor new CYGTLS_HANDLE define to control when the HANDLE operator is allowed in _cygtls. * dcrt0.cc: Move most globals to globals.cc. * init.cc: Ditto. * environ.cc (strip_title_path): Remove now-unneeded extern. * fhandler_serial.cc (fhandler_serial::open): Ditto. * pinfo.cc: Ditto. (commune_process): Ditto. * shared.cc: Ditto. * glob.cc: Ditto. * strace.cc: Ditto. * exceptions.cc: Define CYGTLS_HANDLE before including winsup.h. * path.cc (stat_suffixes): Move here. * security.h: Add forward class path_conv declaration. * smallprint.cc (__small_vsprintf): Make a true c++ function. (__small_sprintf): Ditto. (small_printf): Ditto. (console_printf): Ditto. (__small_vswprintf): Ditto. (__small_swprintf): Ditto. * spawn.cc (spawn_guts): Remove _stdcall decoration in favor of regparm. (hExeced): Move to globals.cc * strfuncs.cc (current_codepage): Ditto. (active_codepage): Ditto. * sync.cc (lock_process::locker): Move here from dcrt0.cc. * syscalls.cc (stat_suffixes): Move to path.cc. * tty.cc (tty::create_master): Uncapitalize fatal warning for consistency. * winsup.h: Include globals.h to declare most of the grab bag list of globals which were previously defined here. * mount.h: Move USER_* defines back to shared_info.h. * speclib: Force temporary directory cleanup.
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2006, 2007, 2008, 2009 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. */
#ifndef _MOUNT_H
#define _MOUNT_H
class fs_info
{
struct status_flags
{
* select.h: New file split from fhandler.h. (select_record::select_record): Define do-nothing constructor for "new" to avoid gratuitous zeroing. (select_info): New base class. (select_pipe_info): New class with methods for dealing with pipes. (select_socket_info): New class with methods for dealing with sockets. (select_serial_info): Dummy class for serial. (select_mailslot_info): Dummy class for mailslots. (select_stuff): Define device_specific_* as actual classes rather than void *. * dtable.h (dtable::select_read): Accommodate return value change to 'bool' and argument change to "select_stuff". (dtable::select_write): Ditto. (dtable::select_except): Ditto. * dtable.cc (dtable::select_read): Accommodate return value change to 'bool' and argument change to "select_stuff". (dtable::select_write): Ditto. (dtable::select_except): Ditto. * fhandler.h: Excise select-related classes. (fhandler_*::select_read): Change argument to select_stuff. (fhandler_*::select_write): Ditto. (fhandler_*::select_except): Ditto. * select.cc (UNIX_FD_ZERO): Use memset rather than bzero. (select_stuff::test_and_set): Change return type to bool. Allocate select_record on entry and let fhandler_*::select_* operate on the start.next field of select_stuff. (pipeinf): Delete. (select_pipe_info::select_pipe_info): New constructor. Allocates event for controlling pipe waits. (select_pipe_info::~select_pipe_info): New destructor. Destroy event. Stop thread. (select_pipe_info::add_watch_handle): New function. (thread_pipe): Wait for the hEvent part of any overlapped pipes before peeking. (start_thread_pipe): Don't allocate device_specific_pipe stuff here. Assume that it has been allocated earlier. (pipe_cleanup): Rely on select_pipe_info destructor to clean up pipe paraphenalia. (fhandler_*::select_*): Derive select_record from new select_stuff argument. (fhandler_pipe::select_*): Ditto. Allocate pipe-specific field if not already allocated. (serialinf): Delete. (thread_serial): serialinf -> select_serial_info. (fhandler_base::ready_for_read): Rewrite to accommodate change in argument to fhandler_*::select_*. (socketinf): Delete. (thread_socket): socketinf -> select_socket_info. (mailslotinf): Delete. (thread_mailslot): mailslotinf -> select_mailslot_info.
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ULONG flags; /* Volume flags */
ULONG samba_version; /* Samba version if available */
ULONG name_len; /* MaximumComponentNameLength */
unsigned is_remote_drive : 1;
unsigned has_acls : 1;
unsigned hasgood_inode : 1;
unsigned caseinsensitive : 1;
union
{
struct
{
unsigned is_fat : 1;
unsigned is_ntfs : 1;
unsigned is_samba : 1;
unsigned is_nfs : 1;
unsigned is_netapp : 1;
unsigned is_cdrom : 1;
unsigned is_udf : 1;
unsigned is_csc_cache : 1;
unsigned is_sunwnfs : 1;
unsigned is_unixfs : 1;
unsigned is_mvfs : 1;
};
unsigned long fs_flags;
};
} status;
ULONG sernum;
char fsn[80];
unsigned long got_fs () { return status.fs_flags; }
public:
void clear ()
{
memset (&status, 0 , sizeof status);
sernum = 0UL;
fsn[0] = '\0';
}
fs_info () { clear (); }
IMPLEMENT_STATUS_FLAG (ULONG, flags)
IMPLEMENT_STATUS_FLAG (ULONG, samba_version)
IMPLEMENT_STATUS_FLAG (ULONG, name_len)
IMPLEMENT_STATUS_FLAG (bool, is_remote_drive)
IMPLEMENT_STATUS_FLAG (bool, has_acls)
IMPLEMENT_STATUS_FLAG (bool, hasgood_inode)
IMPLEMENT_STATUS_FLAG (bool, caseinsensitive)
IMPLEMENT_STATUS_FLAG (bool, is_fat)
IMPLEMENT_STATUS_FLAG (bool, is_ntfs)
IMPLEMENT_STATUS_FLAG (bool, is_samba)
IMPLEMENT_STATUS_FLAG (bool, is_nfs)
IMPLEMENT_STATUS_FLAG (bool, is_netapp)
IMPLEMENT_STATUS_FLAG (bool, is_cdrom)
IMPLEMENT_STATUS_FLAG (bool, is_udf)
IMPLEMENT_STATUS_FLAG (bool, is_csc_cache)
IMPLEMENT_STATUS_FLAG (bool, is_sunwnfs)
IMPLEMENT_STATUS_FLAG (bool, is_unixfs)
IMPLEMENT_STATUS_FLAG (bool, is_mvfs)
ULONG serial_number () const { return sernum; }
int has_buggy_open () const {return is_sunwnfs ();}
int has_buggy_fileid_dirinfo () const {return is_unixfs ();}
const char *fsname () const { return fsn[0] ? fsn : "unknown"; }
bool update (PUNICODE_STRING, HANDLE) __attribute__ ((regparm (3)));
};
/* 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[CYG_MAX_PATH];
int native_pathlen;
/* POSIX-style mount point ("/foo/bar") */
char posix_path[CYG_MAX_PATH];
int posix_pathlen;
unsigned flags;
void init (const char *dev, const char *path, unsigned flags);
struct mntent *getmntent ();
int 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
class reg_key;
struct device;
/* 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:
DWORD sys_mount_table_counter;
int nmounts;
mount_item mount[MAX_MOUNTS];
cygwin ChangeLog 2009-05-13 Corinna Vinschen <corinna@vinschen.de> Christopher Faylor <me+cygwin@cgf.cx> * mount.cc (mount_info::got_usr_bin): Define. (mount_info::got_usr_lib): Ditto. (mount_info::root_idx): Ditto. (mount_info::create_root_entry): Create root entry as immutable and flag as automatic. (mount_info::init): Remove "Huh? No /etc/fstab..." warning. Unconditionally call from_fstab for user and system tables. Fill in /usr/bin and /usr/lib if they have not been specified in /etc/fstab. (oopts): Alphabetize. Add "override" option to allow overriding immutable mount points. (mount_info::add_item): Accommodate new MOUNT_IMMUTABLE flag intended for root mount. (mount_info::add_item): Detect "/usr/bin", "/usr/lib", and "/" and set appropriate global state. (fillout_mntent): Add ,auto to mount points added by Cygwin DLL. (mount): Remove masking of MOUNT_SYSTEM. Allow user to shoot themselves. Add comment. * mount.h (mount_info::got_usr_bin): Declare. (mount_info::got_usr_lib): Ditto. (mount_info::root_idx): Ditto. * include/sys/mount.h: Reformat enum. Add MOUNT_{OVERRIDE,IMMUTABLE,AUTOMATIC}. doc ChangeLog 2009-05-13 Corinna Vinschen <corinna@vinschen.de> Christopher Faylor <me+cygwin@cgf.cx> * pathnames.sgml (mount-table): Sort mount options and add override option. Add description of root mount handling. utils ChangeLog 2009-05-13 Corinna Vinschen <corinna@vinschen.de> Christopher Faylor <me+cygwin@cgf.cx> * mount.cc (oopts): Sort. Add override option. Add dummy "auto" option for consistency. (mount_entries): Avoid adding auto-mounted entries to -m output. * utils.sgml: Sort mount options. Add description of override option.
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static bool got_usr_bin;
static bool got_usr_lib;
static int root_idx;
/* 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[CYG_MAX_PATH];
size_t cygdrive_len;
unsigned cygdrive_flags;
private:
int posix_sorted[MAX_MOUNTS];
int native_sorted[MAX_MOUNTS];
public:
void init ();
int add_item (const char *dev, const char *path, unsigned flags);
int del_item (const char *path, unsigned flags);
unsigned set_flags_from_win32_path (const char *path);
int conv_to_win32_path (const char *src_path, char *dst, device&,
unsigned *flags = NULL);
int conv_to_posix_path (PWCHAR src_path, char *posix_path,
int keep_rel_p);
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 (const char *cygdrive_prefix, unsigned flags);
int get_cygdrive_info (char *user, char *system, char* user_flags,
char* system_flags);
void cygdrive_posix_path (const char *src, char *dst, int trailing_slash_p);
int get_mounts_here (const char *parent_dir, int,
PUNICODE_STRING mount_points,
PUNICODE_STRING cygd);
private:
void sort ();
void mount_slash ();
void create_root_entry (const PWCHAR root);
bool from_fstab_line (char *line, bool user);
bool from_fstab (bool user, WCHAR [], PWCHAR);
int cygdrive_win32_path (const char *src, char *dst, int& unit);
};
#endif