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authorRob Landley2006-08-09 19:51:13 +0000
committerRob Landley2006-08-09 19:51:13 +0000
commit3ba7bd143ea906a6c00b96136f70d3b1cf24d63c (patch)
treed31b6c0e00dfc085f06ca4f997dfbda8f26231df /util-linux
parent721b46e0e608d7ceccf422551d2f53f1c23c285c (diff)
downloadbusybox-3ba7bd143ea906a6c00b96136f70d3b1cf24d63c.zip
busybox-3ba7bd143ea906a6c00b96136f70d3b1cf24d63c.tar.gz
Vladimir Dronnikov convinced me to twiddle the semantics of the new shared
subtree stuff to look more like http://lwn.net/Articles/159077/ thinks they should.
Diffstat (limited to 'util-linux')
-rw-r--r--util-linux/mount.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 5798a8b..93a94bc 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -28,6 +28,7 @@
// Not real flags, but we want to be able to check for this.
#define MOUNT_NOAUTO (1<<29)
#define MOUNT_SWAP (1<<30)
+
/* Standard mount options (from -o options or --options), with corresponding
* flags */
@@ -291,7 +292,7 @@ static int singlemount(struct mntent *mp, int ignore_busy)
// Look at the file. (Not found isn't a failure for remount, or for
// a synthetic filesystem like proc or sysfs.)
- if (!lstat(mp->mnt_fsname, &st) && !(vfsflags & (MS_REMOUNT | MS_BIND | MS_MOVE | MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE)))
+ if (!lstat(mp->mnt_fsname, &st) && !(vfsflags & (MS_REMOUNT | MS_BIND | MS_MOVE)))
{
// Do we need to allocate a loopback device for it?
@@ -455,16 +456,24 @@ int mount_main(int argc, char **argv)
goto clean_up;
}
- // If we have at least one argument, it's the storage location
-
- if (optind < argc) storage_path = bb_simplify_path(argv[optind]);
-
+ // If we have a shared subtree flag, don't worry about fstab or mtab.
+ i = parse_mount_options(cmdopts,0);
+ if (ENABLE_FEATURE_MOUNT_FLAGS &&
+ (i & (MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE )))
+ {
+ rc = mount("", argv[optind], "", i, "");
+ if (rc) bb_perror_msg_and_die("%s", argv[optind]);
+ goto clean_up;
+ }
+
// Open either fstab or mtab
if (parse_mount_options(cmdopts,0) & MS_REMOUNT)
fstabname = bb_path_mtab_file;
else fstabname="/etc/fstab";
+ storage_path = bb_simplify_path(argv[optind]);
+
if (!(fstab=setmntent(fstabname,"r")))
bb_perror_msg_and_die("Cannot read %s",fstabname);