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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.
This commit is contained in:
Christopher Faylor
parent
9708e8cde2
commit
e951743709
@ -1,3 +1,29 @@
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2009-05-13 Corinna Vinschen <corinna@vinschen.de>
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Christopher Faylor <me+cygwin@cgf.cx>
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* mount.cc (mount_info::got_usr_bin): Define.
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(mount_info::got_usr_lib): Ditto.
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(mount_info::root_idx): Ditto.
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(mount_info::create_root_entry): Create root entry as immutable and
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flag as automatic.
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(mount_info::init): Remove "Huh? No /etc/fstab..." warning.
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Unconditionally call from_fstab for user and system tables. Fill in
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/usr/bin and /usr/lib if they have not been specified in /etc/fstab.
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(oopts): Alphabetize. Add "override" option to allow overriding
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immutable mount points.
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(mount_info::add_item): Accommodate new MOUNT_IMMUTABLE flag intended
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for root mount.
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(mount_info::add_item): Detect "/usr/bin", "/usr/lib", and "/" and set
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appropriate global state.
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(fillout_mntent): Add ,auto to mount points added by Cygwin DLL.
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(mount): Remove masking of MOUNT_SYSTEM. Allow user to shoot
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themselves. Add comment.
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* mount.h (mount_info::got_usr_bin): Declare.
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(mount_info::got_usr_lib): Ditto.
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(mount_info::root_idx): Ditto.
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* include/sys/mount.h: Reformat enum.
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Add MOUNT_{OVERRIDE,IMMUTABLE,AUTOMATIC}.
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2009-05-13 Corinna Vinschen <corinna@vinschen.de>
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* cygheap.h (cwdstuff): Convert to class. Make posix and dir private.
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@ -17,21 +17,26 @@ extern "C" {
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enum
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{
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MOUNT_SYMLINK = 0x0001, /* "mount point" is a symlink */
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MOUNT_BINARY = 0x0002, /* "binary" format read/writes */
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MOUNT_SYSTEM = 0x0008, /* mount point came from system table */
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MOUNT_EXEC = 0x0010, /* Any file in the mounted directory gets 'x' bit */
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MOUNT_CYGDRIVE = 0x0020, /* mount point refers to cygdrive device mount */
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MOUNT_CYGWIN_EXEC = 0x0040, /* file or directory is or contains a cygwin
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executable */
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MOUNT_MIXED = 0x0080, /* reads are text, writes are binary
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not yet implemented */
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MOUNT_NOTEXEC = 0x0100, /* don't check files for executable magic */
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MOUNT_DEVFS = 0x0200, /* /device "filesystem" */
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MOUNT_PROC = 0x0400, /* /proc "filesystem" */
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MOUNT_RO = 0x1000, /* read-only "filesystem" */
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MOUNT_NOACL = 0x2000, /* support reading/writing ACLs */
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MOUNT_NOPOSIX = 0x4000 /* Case insensitve path handling */
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MOUNT_SYMLINK = 0x00001, /* "mount point" is a symlink */
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MOUNT_BINARY = 0x00002, /* "binary" format read/writes */
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MOUNT_SYSTEM = 0x00008, /* mount point came from system table */
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MOUNT_EXEC = 0x00010, /* Any file in the mounted directory
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gets 'x' bit */
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MOUNT_CYGDRIVE = 0x00020, /* mount point refers to cygdrive
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device mount */
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MOUNT_CYGWIN_EXEC = 0x00040, /* file or directory is or contains a
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cygwin executable */
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MOUNT_MIXED = 0x00080, /* reads are text, writes are binary
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not yet implemented */
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MOUNT_NOTEXEC = 0x00100, /* don't check files for executable magic */
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MOUNT_DEVFS = 0x00200, /* /device "filesystem" */
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MOUNT_PROC = 0x00400, /* /proc "filesystem" */
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MOUNT_RO = 0x01000, /* read-only "filesystem" */
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MOUNT_NOACL = 0x02000, /* support reading/writing ACLs */
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MOUNT_NOPOSIX = 0x04000, /* Case insensitve path handling */
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MOUNT_OVERRIDE = 0x08000, /* Allow overriding of root */
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MOUNT_IMMUTABLE = 0x10000, /* Mount point can't be changed */
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MOUNT_AUTOMATIC = 0x20000 /* Mount point was added automatically */
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};
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int mount (const char *, const char *, unsigned __flags);
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@ -31,6 +31,7 @@ details. */
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#include <ntdll.h>
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#include <wchar.h>
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#include <stdio.h>
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#include <assert.h>
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/* Determine if path prefix matches current cygdrive */
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#define iscygdrive(path) \
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@ -44,6 +45,10 @@ details. */
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#define isproc(path) \
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(path_prefix_p (proc, (path), proc_len, false))
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bool mount_info::got_usr_bin;
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bool mount_info::got_usr_lib;
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int mount_info::root_idx = -1;
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/* is_unc_share: Return non-zero if PATH begins with //server/share
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or with one of the native prefixes //./ or //?/
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This function is only used to test for valid input strings.
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@ -298,10 +303,12 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
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inline void
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mount_info::create_root_entry (const PWCHAR root)
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{
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/* Create a default root dir from the path the Cygwin DLL is in. */
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/* Create a default root dir derived from the location of the Cygwin DLL.
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The entry is immutable, unless the "override" option is given in /etc/fstab. */
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char native_root[PATH_MAX];
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sys_wcstombs (native_root, PATH_MAX, root);
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mount_table->add_item (native_root, "/", MOUNT_SYSTEM | MOUNT_BINARY);
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mount_table->add_item (native_root, "/",
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MOUNT_SYSTEM | MOUNT_BINARY | MOUNT_OVERRIDE | MOUNT_AUTOMATIC);
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/* Create a default cygdrive entry. Note that this is a user entry.
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This allows to override it with mount, unless the sysadmin created
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a cygdrive entry in /etc/fstab. */
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@ -322,12 +329,28 @@ mount_info::init ()
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pathend = wcpcpy (path, cygwin_shared->installation_root);
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create_root_entry (path);
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pathend = wcpcpy (pathend, L"\\etc\\fstab");
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if (from_fstab (false, path, pathend) /* The single | is correct! */
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| from_fstab (true, path, pathend))
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return;
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/* FIXME: Remove warning message before releasing 1.7.0. */
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small_printf ("Huh? No /etc/fstab file in %W? Using default root and cygdrive prefix...\n", path);
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from_fstab (false, path, pathend);
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from_fstab (true, path, pathend);
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if (!got_usr_bin || !got_usr_lib)
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{
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char native[PATH_MAX];
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assert (root_idx != -1);
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char *p = stpcpy (native, mount[root_idx].native_path);
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if (!got_usr_bin)
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{
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stpcpy (p, "\\bin");
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mount_table->add_item (native, "/usr/bin",
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MOUNT_SYSTEM | MOUNT_BINARY | MOUNT_AUTOMATIC | MOUNT_CYGWIN_EXEC);
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}
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if (!got_usr_lib)
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{
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stpcpy (p, "\\lib");
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mount_table->add_item (native, "/usr/lib",
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MOUNT_SYSTEM | MOUNT_BINARY | MOUNT_AUTOMATIC);
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}
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}
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}
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static void
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@ -835,18 +858,19 @@ struct opt
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bool clear;
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} oopts[] =
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{
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{"user", MOUNT_SYSTEM, 1},
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{"nouser", MOUNT_SYSTEM, 0},
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{"binary", MOUNT_BINARY, 0},
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{"text", MOUNT_BINARY, 1},
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{"exec", MOUNT_EXEC, 0},
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{"notexec", MOUNT_NOTEXEC, 0},
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{"cygexec", MOUNT_CYGWIN_EXEC, 0},
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{"nosuid", 0, 0},
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{"acl", MOUNT_NOACL, 1},
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{"binary", MOUNT_BINARY, 0},
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{"cygexec", MOUNT_CYGWIN_EXEC, 0},
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{"exec", MOUNT_EXEC, 0},
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{"noacl", MOUNT_NOACL, 0},
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{"nosuid", 0, 0},
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{"notexec", MOUNT_NOTEXEC, 0},
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{"nouser", MOUNT_SYSTEM, 0},
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{"override", MOUNT_OVERRIDE, 0},
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{"posix=0", MOUNT_NOPOSIX, 0},
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{"posix=1", MOUNT_NOPOSIX, 1},
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{"posix=0", MOUNT_NOPOSIX, 0}
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{"text", MOUNT_BINARY, 1},
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{"user", MOUNT_SYSTEM, 1}
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};
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static bool
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@ -1054,7 +1078,7 @@ mount_info::write_cygdrive_info (const char *cygdrive_prefix, unsigned flags)
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set_errno (EINVAL);
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return -1;
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}
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/* Don't allow to override a system cygdrive prefix. */
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/* Don't allow overriding of a system cygdrive prefix. */
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if (cygdrive_flags & MOUNT_SYSTEM)
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{
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set_errno (EPERM);
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@ -1238,14 +1262,26 @@ mount_info::add_item (const char *native, const char *posix,
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{
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if (!strcmp (mount[i].posix_path, posixtmp))
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{
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/* Don't allow to override a system mount with a user mount. */
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/* Don't allow overriding of a system mount with a user mount. */
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if ((mount[i].flags & MOUNT_SYSTEM) && !(mountflags & MOUNT_SYSTEM))
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{
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set_errno (EPERM);
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return -1;
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}
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if ((mount[i].flags & MOUNT_SYSTEM) == (mountflags & MOUNT_SYSTEM))
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if ((mount[i].flags & MOUNT_SYSTEM) != (mountflags & MOUNT_SYSTEM))
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continue;
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else if (!(mount[i].flags & MOUNT_IMMUTABLE))
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break;
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else if (mountflags & MOUNT_OVERRIDE)
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{
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mountflags |= MOUNT_IMMUTABLE;
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break;
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}
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else
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{
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set_errno (EPERM);
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return -1;
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}
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}
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}
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@ -1257,6 +1293,16 @@ mount_info::add_item (const char *native, const char *posix,
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if (i == nmounts)
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nmounts++;
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if (strcmp (posixtmp, "/usr/bin") == 0)
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got_usr_bin = true;
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if (strcmp (posixtmp, "/usr/lib") == 0)
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got_usr_lib = true;
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if (posixtmp[0] == '/' && posixtmp[1] == '\0')
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root_idx = i;
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mount[i].init (nativetmp, posixtmp, mountflags);
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sort ();
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@ -1301,8 +1347,8 @@ mount_info::del_item (const char *path, unsigned flags)
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? !strcmp (mount[ent].posix_path, pathtmp)
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: strcasematch (mount[ent].native_path, pathtmp)))
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{
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/* Don't allow to remove a system mount. */
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if ((mount[ent].flags & MOUNT_SYSTEM))
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/* Don't allow removal of a system mount. */
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if (mount[ent].flags & MOUNT_SYSTEM)
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{
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set_errno (EPERM);
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return -1;
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@ -1407,9 +1453,12 @@ fillout_mntent (const char *native_path, const char *posix_path, unsigned flags)
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if (!(flags & MOUNT_SYSTEM)) /* user mount */
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strcat (_my_tls.locals.mnt_opts, (char *) ",user");
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if ((flags & MOUNT_CYGDRIVE)) /* cygdrive */
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if (flags & MOUNT_CYGDRIVE) /* cygdrive */
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strcat (_my_tls.locals.mnt_opts, (char *) ",noumount");
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if (flags & (MOUNT_AUTOMATIC | MOUNT_CYGDRIVE))
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strcat (_my_tls.locals.mnt_opts, (char *) ",auto");
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ret.mnt_opts = _my_tls.locals.mnt_opts;
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ret.mnt_freq = 1;
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@ -1487,8 +1536,9 @@ mount_item::init (const char *native, const char *posix, unsigned mountflags)
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extern "C" int
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mount (const char *win32_path, const char *posix_path, unsigned flags)
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{
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/* FIXME: Should we disallow setting MOUNT_SYSTEM in flags since it
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isn't really supported except from fstab? */
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int res = -1;
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flags &= ~MOUNT_SYSTEM;
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myfault efault;
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if (efault.faulted (EFAULT))
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@ -104,6 +104,10 @@ class mount_info
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int nmounts;
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mount_item mount[MAX_MOUNTS];
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static bool got_usr_bin;
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static bool got_usr_lib;
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static int root_idx;
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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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@ -1,3 +1,9 @@
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2009-05-13 Corinna Vinschen <corinna@vinschen.de>
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Christopher Faylor <me+cygwin@cgf.cx>
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* pathnames.sgml (mount-table): Sort mount options and add override
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option. Add description of root mount handling.
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2009-05-13 Corinna Vinschen <corinna@vinschen.de>
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* pathnames.sgml (pathnames-unusual): Talk about using UTF-8 in C
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@ -67,25 +67,26 @@ options are binary, text, nouser, user, exec, notexec, cygexec, nosuid,
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posix=[0|1]. The meaning of the options is as follows.</para>
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<screen>
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acl - Cygwin uses the filesystem's access control lists (ACLs) to
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implement real POSIX permissions (default). This flag only
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affects filesystems supporting ACLs (NTFS) and is ignored
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otherwise.
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noacl - Cygwin ignores filesystem ACLs and only fakes a subset of
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permission bits based on the DOS readonly attribute. This
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behaviour is the default on FAT and FAT32. The flag is
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ignored on NFS filesystems.
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binary - Files default to binary mode (default).
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text - Files default to CRLF text mode line endings.
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nouser - Mount is a system-wide mount.
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user - Mount is a user mount.
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exec - Treat all files below mount point as executable.
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notexec - Treat all files below mount point as not executable.
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cygexec - Treat all files below mount point as cygwin executables.
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nosuid - No suid files are allowed (currently unimplemented).
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posix=0 - Switch off case sensitivity for paths under this mount point.
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posix=1 - Switch on case sensitivity for paths under this mount point
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(default).
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acl - Cygwin uses the filesystem's access control lists (ACLs) to
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implement real POSIX permissions (default). This flag only
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affects filesystems supporting ACLs (NTFS) and is ignored
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otherwise.
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binary - Files default to binary mode (default).
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cygexec - Treat all files below mount point as cygwin executables.
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exec - Treat all files below mount point as executable.
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noacl - Cygwin ignores filesystem ACLs and only fakes a subset of
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permission bits based on the DOS readonly attribute. This
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behaviour is the default on FAT and FAT32. The flag is
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ignored on NFS filesystems.
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nosuid - No suid files are allowed (currently unimplemented).
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notexec - Treat all files below mount point as not executable.
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nouser - Mount is a system-wide mount.
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override - Force the override of an immutable mount point (currently "/").
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posix=0 - Switch off case sensitivity for paths under this mount point.
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posix=1 - Switch on case sensitivity for paths under this mount point
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(default).
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text - Files default to CRLF text mode line endings.
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user - Mount is a user mount.
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</screen>
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<para>While normally the execute permission bits are used to evaluate
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@ -105,8 +106,16 @@ overhead of opening each file to check for a '#!'. The
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but also prevents Cygwin from setting up commands and environment variables
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for a normal Windows program, adding another small performance gain. The
|
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opposite of these options is the <literal>notexec</literal> option, which
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means that no files should be marked as executable under that mount point.
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</para>
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means that no files should be marked as executable under that mount point.</para>
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<para>A correct root directory is quite essential to the operation of
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Cygwin. A default root directory is evaluated at startup so a
|
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<filename>fstab</filename> entry for the root directory is not necessary.
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If it's wrong, nothing will work as expected. Therefore, the root directory
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evaluated by Cygwin itself is treated as an immutable mount point and can't
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be overridden in /etc/fstab... unless you think you really know what you're
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doing. In this case, use the <literal>override</literal> flag in the options
|
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field in the <filename>/etc/fstab</filename> file. Since this is a dangerous
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thing to do, do so at your own risk.</para>
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<para><literal>nouser</literal> mount points are not overridable by a later
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call to <command>mount</command>.
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@ -1,3 +1,12 @@
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2009-05-13 Corinna Vinschen <corinna@vinschen.de>
|
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Christopher Faylor <me+cygwin@cgf.cx>
|
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|
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* mount.cc (oopts): Sort. Add override option. Add dummy "auto"
|
||||
option for consistency.
|
||||
(mount_entries): Avoid adding auto-mounted entries to -m output.
|
||||
|
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* utils.sgml: Sort mount options. Add description of override option.
|
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|
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2009-05-11 Corinna Vinschen <corinna@vinschen.de>
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* Makefile.in: Link ps.exe agains ntdll.dll.
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@ -1,7 +1,7 @@
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/* mount.cc
|
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|
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005,
|
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2008 Red Hat, Inc.
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2008, 2009 Red Hat, Inc.
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|
||||
This file is part of Cygwin.
|
||||
|
||||
@ -132,16 +132,19 @@ struct opt
|
||||
bool clear;
|
||||
} oopts[] =
|
||||
{
|
||||
{"binary", MOUNT_BINARY, false},
|
||||
{"text", MOUNT_BINARY, true},
|
||||
{"exec", MOUNT_EXEC, false},
|
||||
{"notexec", MOUNT_NOTEXEC, false},
|
||||
{"cygexec", MOUNT_CYGWIN_EXEC, false},
|
||||
{"nosuid", 0, 0},
|
||||
{"acl", MOUNT_NOACL, true},
|
||||
{"auto", 0, false},
|
||||
{"binary", MOUNT_BINARY, false},
|
||||
{"cygexec", MOUNT_CYGWIN_EXEC, false},
|
||||
{"exec", MOUNT_EXEC, false},
|
||||
{"noacl", MOUNT_NOACL, false},
|
||||
{"posix=1", MOUNT_NOPOSIX, true},
|
||||
{"nosuid", 0, false},
|
||||
{"notexec", MOUNT_NOTEXEC, false},
|
||||
{"override", MOUNT_OVERRIDE, true},
|
||||
{"posix=0", MOUNT_NOPOSIX, false},
|
||||
{"posix=1", MOUNT_NOPOSIX, true},
|
||||
{"text", MOUNT_BINARY, true},
|
||||
{"user", MOUNT_SYSTEM, true}
|
||||
};
|
||||
|
||||
static void
|
||||
@ -366,7 +369,7 @@ mount_entries (void)
|
||||
// write fstab entries for normal mount points
|
||||
while ((p = getmntent (m)) != NULL)
|
||||
// Only list non-cygdrives
|
||||
if (!strstr (p->mnt_opts, ",noumount"))
|
||||
if (!strstr (p->mnt_opts, ",noumount") && !strstr (p->mnt_opts, ",auto"))
|
||||
{
|
||||
char fsname[NT_MAX_PATH], dirname[NT_MAX_PATH];
|
||||
printf (format_mnt, convert_spaces (fsname, p->mnt_fsname),
|
||||
|
||||
@ -786,16 +786,17 @@ most of the options are duplicates of other mount flags):</para>
|
||||
<screen>
|
||||
acl - Use the filesystem's access control lists (ACLs) to
|
||||
implement real POSIX permissions (default).
|
||||
noacl - Ignore ACLs and fake POSIX permissions.
|
||||
binary - Files default to binary mode (default).
|
||||
text - Files default to CRLF text mode line endings.
|
||||
exec - Treat all files below mount point as executable.
|
||||
notexec - Treat all files below mount point as not executable.
|
||||
cygexec - Treat all files below mount point as cygwin executables.
|
||||
exec - Treat all files below mount point as executable.
|
||||
noacl - Ignore ACLs and fake POSIX permissions.
|
||||
nosuid - No suid files are allowed (currently unimplemented)
|
||||
notexec - Treat all files below mount point as not executable.
|
||||
override - Override immutable mount points.
|
||||
posix=0 - Switch off case sensitivity for paths under this mount point.
|
||||
posix=1 - Switch on case sensitivity for paths under this mount point
|
||||
(default).
|
||||
text - Files default to CRLF text mode line endings.
|
||||
</screen>
|
||||
|
||||
<para>For a more complete description of the mount options and the
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user