diff options
Diffstat (limited to 'fs/locks.c')
| -rw-r--r-- | fs/locks.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/locks.c b/fs/locks.c index f5b210a2dc34..dd290a87f58e 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1935,14 +1935,19 @@ static int generic_delete_lease(struct file *filp, void *owner) int generic_setlease(struct file *filp, int arg, struct file_lease **flp, void **priv) { - if (!S_ISREG(file_inode(filp)->i_mode)) + struct inode *inode = file_inode(filp); + + if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode)) return -EINVAL; switch (arg) { case F_UNLCK: return generic_delete_lease(filp, *priv); - case F_RDLCK: case F_WRLCK: + if (S_ISDIR(inode->i_mode)) + return -EINVAL; + fallthrough; + case F_RDLCK: if (!(*flp)->fl_lmops->lm_break) { WARN_ON_ONCE(1); return -ENOLCK; @@ -2071,6 +2076,9 @@ static int do_fcntl_add_lease(unsigned int fd, struct file *filp, int arg) */ int fcntl_setlease(unsigned int fd, struct file *filp, int arg) { + if (S_ISDIR(file_inode(filp)->i_mode)) + return -EINVAL; + if (arg == F_UNLCK) return vfs_setlease(filp, F_UNLCK, NULL, (void **)&filp); return do_fcntl_add_lease(fd, filp, arg); |