diff options
Diffstat (limited to 'fs/debugfs/inode.c')
| -rw-r--r-- | fs/debugfs/inode.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 4733eab34a2..36e2b667e82 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -128,8 +128,8 @@ static inline int debugfs_positive(struct dentry *dentry) } struct debugfs_mount_opts { - uid_t uid; - gid_t gid; + kuid_t uid; + kgid_t gid; umode_t mode; }; @@ -156,6 +156,8 @@ static int debugfs_parse_options(char *data, struct debugfs_mount_opts *opts) substring_t args[MAX_OPT_ARGS]; int option; int token; + kuid_t uid; + kgid_t gid; char *p; opts->mode = DEBUGFS_DEFAULT_MODE; @@ -169,12 +171,18 @@ static int debugfs_parse_options(char *data, struct debugfs_mount_opts *opts) case Opt_uid: if (match_int(&args[0], &option)) return -EINVAL; - opts->uid = option; + uid = make_kuid(current_user_ns(), option); + if (!uid_valid(uid)) + return -EINVAL; + opts->uid = uid; break; case Opt_gid: if (match_octal(&args[0], &option)) return -EINVAL; - opts->gid = option; + gid = make_kgid(current_user_ns(), option); + if (!gid_valid(gid)) + return -EINVAL; + opts->gid = gid; break; case Opt_mode: if (match_octal(&args[0], &option)) @@ -226,10 +234,12 @@ static int debugfs_show_options(struct seq_file *m, struct dentry *root) struct debugfs_fs_info *fsi = root->d_sb->s_fs_info; struct debugfs_mount_opts *opts = &fsi->mount_opts; - if (opts->uid != 0) - seq_printf(m, ",uid=%u", opts->uid); - if (opts->gid != 0) - seq_printf(m, ",gid=%u", opts->gid); + if (!uid_eq(opts->uid, GLOBAL_ROOT_UID)) + seq_printf(m, ",uid=%u", + from_kuid_munged(&init_user_ns, opts->uid)); + if (!gid_eq(opts->gid, GLOBAL_ROOT_GID)) + seq_printf(m, ",gid=%u", + from_kgid_munged(&init_user_ns, opts->gid)); if (opts->mode != DEBUGFS_DEFAULT_MODE) seq_printf(m, ",mode=%o", opts->mode); |