diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 16421f662a7a..f5075e0e7301 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1369,12 +1369,25 @@ extern int locks_mandatory_area(int, struct inode *, struct file *, loff_t, size * Candidates for mandatory locking have the setgid bit set * but no group execute bit - an otherwise meaningless combination. */ -#define MANDATORY_LOCK(inode) \ - (IS_MANDLOCK(inode) && ((inode)->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID) + +static inline int __mandatory_lock(struct inode *ino) +{ + return (ino->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID; +} + +/* + * ... and these candidates should be on MS_MANDLOCK mounted fs, + * otherwise these will be advisory locks + */ + +static inline int mandatory_lock(struct inode *ino) +{ + return IS_MANDLOCK(ino) && __mandatory_lock(ino); +} static inline int locks_verify_locked(struct inode *inode) { - if (MANDATORY_LOCK(inode)) + if (mandatory_lock(inode)) return locks_mandatory_locked(inode); return 0; } @@ -1385,7 +1398,7 @@ static inline int locks_verify_truncate(struct inode *inode, struct file *filp, loff_t size) { - if (inode->i_flock && MANDATORY_LOCK(inode)) + if (inode->i_flock && mandatory_lock(inode)) return locks_mandatory_area( FLOCK_VERIFY_WRITE, inode, filp, size < inode->i_size ? size : inode->i_size, |