diff options
Diffstat (limited to 'fs/autofs/dev-ioctl.c')
| -rw-r--r-- | fs/autofs/dev-ioctl.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/fs/autofs/dev-ioctl.c b/fs/autofs/dev-ioctl.c index f011e026358e..d8dd150cbd74 100644 --- a/fs/autofs/dev-ioctl.c +++ b/fs/autofs/dev-ioctl.c @@ -110,6 +110,7 @@ static inline void free_dev_ioctl(struct autofs_dev_ioctl *param) */ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param) { + unsigned int inr = _IOC_NR(cmd); int err; err = check_dev_ioctl_version(cmd, param); @@ -133,7 +134,7 @@ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param) * check_name() return for AUTOFS_DEV_IOCTL_TIMEOUT_CMD. */ err = check_name(param->path); - if (cmd == AUTOFS_DEV_IOCTL_TIMEOUT_CMD) + if (inr == AUTOFS_DEV_IOCTL_TIMEOUT_CMD) err = err ? 0 : -EINVAL; if (err) { pr_warn("invalid path supplied for cmd(0x%08x)\n", @@ -141,8 +142,6 @@ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param) goto out; } } else { - unsigned int inr = _IOC_NR(cmd); - if (inr == AUTOFS_DEV_IOCTL_OPENMOUNT_CMD || inr == AUTOFS_DEV_IOCTL_REQUESTER_CMD || inr == AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD) { @@ -443,7 +442,6 @@ static int autofs_dev_ioctl_timeout(struct file *fp, sbi->exp_timeout = timeout * HZ; } else { struct dentry *base = fp->f_path.dentry; - struct inode *inode = base->d_inode; int path_len = param->size - AUTOFS_DEV_IOCTL_SIZE - 1; struct dentry *dentry; struct autofs_info *ino; @@ -461,9 +459,8 @@ static int autofs_dev_ioctl_timeout(struct file *fp, "the parent autofs mount timeout which could " "prevent shutdown\n"); - inode_lock_shared(inode); - dentry = try_lookup_one_len(param->path, base, path_len); - inode_unlock_shared(inode); + dentry = try_lookup_noperm(&QSTR_LEN(param->path, path_len), + base); if (IS_ERR_OR_NULL(dentry)) return dentry ? PTR_ERR(dentry) : -ENOENT; ino = autofs_dentry_ino(dentry); |