mount: -T OTHERTAB support
function old new delta mount_main 1221 1241 +20 packed_usage 30616 30610 -6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Isaac Dunham <ibid.ag@gmail.com>
This commit is contained in:
Isaac Dunham
Denys Vlasenko
parent
3c31b092ac
commit
7b434a67dc
@ -434,94 +434,6 @@ config MORE
|
||||
you will probably find this utility very helpful. If you don't have
|
||||
any need to reading text files, you can leave this disabled.
|
||||
|
||||
config MOUNT
|
||||
bool "mount"
|
||||
default y
|
||||
select PLATFORM_LINUX
|
||||
help
|
||||
All files and filesystems in Unix are arranged into one big directory
|
||||
tree. The 'mount' utility is used to graft a filesystem onto a
|
||||
particular part of the tree. A filesystem can either live on a block
|
||||
device, or it can be accessible over the network, as is the case with
|
||||
NFS filesystems. Most people using BusyBox will also want to enable
|
||||
the 'mount' utility.
|
||||
|
||||
config FEATURE_MOUNT_FAKE
|
||||
bool "Support option -f"
|
||||
default y
|
||||
depends on MOUNT
|
||||
help
|
||||
Enable support for faking a file system mount.
|
||||
|
||||
config FEATURE_MOUNT_VERBOSE
|
||||
bool "Support option -v"
|
||||
default y
|
||||
depends on MOUNT
|
||||
help
|
||||
Enable multi-level -v[vv...] verbose messages. Useful if you
|
||||
debug mount problems and want to see what is exactly passed
|
||||
to the kernel.
|
||||
|
||||
config FEATURE_MOUNT_HELPERS
|
||||
bool "Support mount helpers"
|
||||
default n
|
||||
depends on MOUNT
|
||||
help
|
||||
Enable mounting of virtual file systems via external helpers.
|
||||
E.g. "mount obexfs#-b00.11.22.33.44.55 /mnt" will in effect call
|
||||
"obexfs -b00.11.22.33.44.55 /mnt"
|
||||
Also "mount -t sometype [-o opts] fs /mnt" will try
|
||||
"sometype [-o opts] fs /mnt" if simple mount syscall fails.
|
||||
The idea is to use such virtual filesystems in /etc/fstab.
|
||||
|
||||
config FEATURE_MOUNT_LABEL
|
||||
bool "Support specifying devices by label or UUID"
|
||||
default y
|
||||
depends on MOUNT
|
||||
select VOLUMEID
|
||||
help
|
||||
This allows for specifying a device by label or uuid, rather than by
|
||||
name. This feature utilizes the same functionality as blkid/findfs.
|
||||
This also enables label or uuid support for swapon.
|
||||
|
||||
config FEATURE_MOUNT_NFS
|
||||
bool "Support mounting NFS file systems on Linux < 2.6.23"
|
||||
default n
|
||||
depends on MOUNT
|
||||
select FEATURE_HAVE_RPC
|
||||
select FEATURE_SYSLOG
|
||||
help
|
||||
Enable mounting of NFS file systems on Linux kernels prior
|
||||
to version 2.6.23. Note that in this case mounting of NFS
|
||||
over IPv6 will not be possible.
|
||||
|
||||
Note that this option links in RPC support from libc,
|
||||
which is rather large (~10 kbytes on uclibc).
|
||||
|
||||
config FEATURE_MOUNT_CIFS
|
||||
bool "Support mounting CIFS/SMB file systems"
|
||||
default y
|
||||
depends on MOUNT
|
||||
help
|
||||
Enable support for samba mounts.
|
||||
|
||||
config FEATURE_MOUNT_FLAGS
|
||||
depends on MOUNT
|
||||
bool "Support lots of -o flags in mount"
|
||||
default y
|
||||
help
|
||||
Without this, mount only supports ro/rw/remount. With this, it
|
||||
supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
|
||||
noatime, diratime, nodiratime, loud, bind, move, shared, slave,
|
||||
private, unbindable, rshared, rslave, rprivate, and runbindable.
|
||||
|
||||
config FEATURE_MOUNT_FSTAB
|
||||
depends on MOUNT
|
||||
bool "Support /etc/fstab and -a"
|
||||
default y
|
||||
help
|
||||
Support mount all and looking for files in /etc/fstab.
|
||||
|
||||
config PIVOT_ROOT
|
||||
bool "pivot_root"
|
||||
default y
|
||||
|
||||
@ -17,8 +17,103 @@
|
||||
// mount_it_now() does the actual mount.
|
||||
//
|
||||
|
||||
//config:config MOUNT
|
||||
//config: bool "mount"
|
||||
//config: default y
|
||||
//config: select PLATFORM_LINUX
|
||||
//config: help
|
||||
//config: All files and filesystems in Unix are arranged into one big directory
|
||||
//config: tree. The 'mount' utility is used to graft a filesystem onto a
|
||||
//config: particular part of the tree. A filesystem can either live on a block
|
||||
//config: device, or it can be accessible over the network, as is the case with
|
||||
//config: NFS filesystems. Most people using BusyBox will also want to enable
|
||||
//config: the 'mount' utility.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_FAKE
|
||||
//config: bool "Support option -f"
|
||||
//config: default y
|
||||
//config: depends on MOUNT
|
||||
//config: help
|
||||
//config: Enable support for faking a file system mount.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_VERBOSE
|
||||
//config: bool "Support option -v"
|
||||
//config: default y
|
||||
//config: depends on MOUNT
|
||||
//config: help
|
||||
//config: Enable multi-level -v[vv...] verbose messages. Useful if you
|
||||
//config: debug mount problems and want to see what is exactly passed
|
||||
//config: to the kernel.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_HELPERS
|
||||
//config: bool "Support mount helpers"
|
||||
//config: default n
|
||||
//config: depends on MOUNT
|
||||
//config: help
|
||||
//config: Enable mounting of virtual file systems via external helpers.
|
||||
//config: E.g. "mount obexfs#-b00.11.22.33.44.55 /mnt" will in effect call
|
||||
//config: "obexfs -b00.11.22.33.44.55 /mnt"
|
||||
//config: Also "mount -t sometype [-o opts] fs /mnt" will try
|
||||
//config: "sometype [-o opts] fs /mnt" if simple mount syscall fails.
|
||||
//config: The idea is to use such virtual filesystems in /etc/fstab.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_LABEL
|
||||
//config: bool "Support specifying devices by label or UUID"
|
||||
//config: default y
|
||||
//config: depends on MOUNT
|
||||
//config: select VOLUMEID
|
||||
//config: help
|
||||
//config: This allows for specifying a device by label or uuid, rather than by
|
||||
//config: name. This feature utilizes the same functionality as blkid/findfs.
|
||||
//config: This also enables label or uuid support for swapon.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_NFS
|
||||
//config: bool "Support mounting NFS file systems on Linux < 2.6.23"
|
||||
//config: default n
|
||||
//config: depends on MOUNT
|
||||
//config: select FEATURE_HAVE_RPC
|
||||
//config: select FEATURE_SYSLOG
|
||||
//config: help
|
||||
//config: Enable mounting of NFS file systems on Linux kernels prior
|
||||
//config: to version 2.6.23. Note that in this case mounting of NFS
|
||||
//config: over IPv6 will not be possible.
|
||||
//config:
|
||||
//config: Note that this option links in RPC support from libc,
|
||||
//config: which is rather large (~10 kbytes on uclibc).
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_CIFS
|
||||
//config: bool "Support mounting CIFS/SMB file systems"
|
||||
//config: default y
|
||||
//config: depends on MOUNT
|
||||
//config: help
|
||||
//config: Enable support for samba mounts.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_FLAGS
|
||||
//config: depends on MOUNT
|
||||
//config: bool "Support lots of -o flags in mount"
|
||||
//config: default y
|
||||
//config: help
|
||||
//config: Without this, mount only supports ro/rw/remount. With this, it
|
||||
//config: supports nosuid, suid, dev, nodev, exec, noexec, sync, async, atime,
|
||||
//config: noatime, diratime, nodiratime, loud, bind, move, shared, slave,
|
||||
//config: private, unbindable, rshared, rslave, rprivate, and runbindable.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_FSTAB
|
||||
//config: depends on MOUNT
|
||||
//config: bool "Support /etc/fstab and -a"
|
||||
//config: default y
|
||||
//config: help
|
||||
//config: Support mount all and looking for files in /etc/fstab.
|
||||
//config:
|
||||
//config:config FEATURE_MOUNT_OTHERTAB
|
||||
//config: depends on FEATURE_MOUNT_FSTAB
|
||||
//config: bool "Support -T <alt_fstab>"
|
||||
//config: default y
|
||||
//config: help
|
||||
//config: Support mount -T (specifying an alternate fstab)
|
||||
|
||||
//usage:#define mount_trivial_usage
|
||||
//usage: "[OPTIONS] [-o OPTS] DEVICE NODE"
|
||||
//usage: "[OPTIONS] [-o OPT] DEVICE NODE"
|
||||
//usage:#define mount_full_usage "\n\n"
|
||||
//usage: "Mount a filesystem. Filesystem autodetection requires /proc.\n"
|
||||
//usage: "\n -a Mount all filesystems in fstab"
|
||||
@ -41,8 +136,11 @@
|
||||
//usage: )
|
||||
////usage: "\n -s Sloppy (ignored)"
|
||||
//usage: "\n -r Read-only mount"
|
||||
//usage: "\n -w Read-write mount (default)"
|
||||
////usage: "\n -w Read-write mount (default)"
|
||||
//usage: "\n -t FSTYPE[,...] Filesystem type(s)"
|
||||
//usage: IF_FEATURE_MOUNT_OTHERTAB(
|
||||
//usage: "\n -T FILE Read FILE instead of /etc/fstab"
|
||||
//usage: )
|
||||
//usage: "\n -O OPT Mount only filesystems with option OPT (-a only)"
|
||||
//usage: "\n-o OPT:"
|
||||
//usage: IF_FEATURE_MOUNT_LOOP(
|
||||
@ -64,7 +162,7 @@
|
||||
//usage: "\n move Relocate an existing mount point"
|
||||
//usage: )
|
||||
//usage: "\n remount Remount a mounted filesystem, changing flags"
|
||||
//usage: "\n ro/rw Same as -r/-w"
|
||||
//usage: "\n ro Same as -r"
|
||||
//usage: "\n"
|
||||
//usage: "\nThere are filesystem-specific -o flags."
|
||||
//usage:
|
||||
@ -167,7 +265,7 @@ enum {
|
||||
};
|
||||
|
||||
|
||||
#define OPTION_STR "o:t:rwanfvsiO:"
|
||||
#define OPTION_STR "o:t:rwanfvsiO:" IF_FEATURE_MOUNT_OTHERTAB("T:")
|
||||
enum {
|
||||
OPT_o = (1 << 0),
|
||||
OPT_t = (1 << 1),
|
||||
@ -180,6 +278,7 @@ enum {
|
||||
OPT_s = (1 << 8),
|
||||
OPT_i = (1 << 9),
|
||||
OPT_O = (1 << 10),
|
||||
OPT_T = (1 << 11),
|
||||
};
|
||||
|
||||
#if ENABLE_FEATURE_MTAB_SUPPORT
|
||||
@ -2034,7 +2133,7 @@ int mount_main(int argc UNUSED_PARAM, char **argv)
|
||||
char *O_optmatch = NULL;
|
||||
char *storage_path;
|
||||
llist_t *lst_o = NULL;
|
||||
const char *fstabname;
|
||||
const char *fstabname = "/etc/fstab";
|
||||
FILE *fstab;
|
||||
int i, j;
|
||||
int rc = EXIT_SUCCESS;
|
||||
@ -2061,6 +2160,7 @@ int mount_main(int argc UNUSED_PARAM, char **argv)
|
||||
// Max 2 params; -o is a list, -v is a counter
|
||||
opt_complementary = "?2o::" IF_FEATURE_MOUNT_VERBOSE("vv");
|
||||
opt = getopt32(argv, OPTION_STR, &lst_o, &fstype, &O_optmatch
|
||||
IF_FEATURE_MOUNT_OTHERTAB(, &fstabname)
|
||||
IF_FEATURE_MOUNT_VERBOSE(, &verbose));
|
||||
while (lst_o) append_mount_options(&cmdopts, llist_pop(&lst_o)); // -o
|
||||
if (opt & OPT_r) append_mount_options(&cmdopts, "ro"); // -r
|
||||
@ -2128,8 +2228,10 @@ int mount_main(int argc UNUSED_PARAM, char **argv)
|
||||
return rc;
|
||||
}
|
||||
|
||||
// Open either fstab or mtab
|
||||
// A malicious user could overmount /usr without this.
|
||||
if (ENABLE_FEATURE_MOUNT_OTHERTAB && nonroot)
|
||||
fstabname = "/etc/fstab";
|
||||
// Open either fstab or mtab
|
||||
if (cmdopt_flags & MS_REMOUNT) {
|
||||
// WARNING. I am not sure this matches util-linux's
|
||||
// behavior. It's possible util-linux does not
|
||||
|
||||
Loading…
Reference in New Issue
Block a user