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| author | Miklos Szeredi | 2005-09-09 22:10:34 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2005-09-09 23:03:46 +0200 |
| commit | 5a53368277efa2d80dd2206dddc1f4b19ef0c32a (patch) | |
| tree | decdf01b0019bf3d0f04d3426b8d6e2d18641eb3 /fs/fuse | |
| parent | [PATCH] FUSE: tighten check for processes allowed access (diff) | |
| download | kernel-qcow2-linux-5a53368277efa2d80dd2206dddc1f4b19ef0c32a.tar.gz kernel-qcow2-linux-5a53368277efa2d80dd2206dddc1f4b19ef0c32a.tar.xz kernel-qcow2-linux-5a53368277efa2d80dd2206dddc1f4b19ef0c32a.zip | |
[PATCH] fuse: stricter mount option checking
Check for the presence of all mandatory mount options.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/inode.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index c8e54c0658f1..298c1d4c1534 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -32,6 +32,10 @@ struct fuse_mount_data { unsigned rootmode; unsigned user_id; unsigned group_id; + unsigned fd_present : 1; + unsigned rootmode_present : 1; + unsigned user_id_present : 1; + unsigned group_id_present : 1; unsigned flags; unsigned max_read; }; @@ -274,7 +278,6 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d) { char *p; memset(d, 0, sizeof(struct fuse_mount_data)); - d->fd = -1; d->max_read = ~0; while ((p = strsep(&opt, ",")) != NULL) { @@ -290,24 +293,28 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d) if (match_int(&args[0], &value)) return 0; d->fd = value; + d->fd_present = 1; break; case OPT_ROOTMODE: if (match_octal(&args[0], &value)) return 0; d->rootmode = value; + d->rootmode_present = 1; break; case OPT_USER_ID: if (match_int(&args[0], &value)) return 0; d->user_id = value; + d->user_id_present = 1; break; case OPT_GROUP_ID: if (match_int(&args[0], &value)) return 0; d->group_id = value; + d->group_id_present = 1; break; case OPT_DEFAULT_PERMISSIONS: @@ -332,7 +339,9 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d) return 0; } } - if (d->fd == -1) + + if (!d->fd_present || !d->rootmode_present || + !d->user_id_present || !d->group_id_present) return 0; return 1; |