diff options
| -rw-r--r-- | fs/locks.c | 7 | ||||
| -rw-r--r-- | fs/namei.c | 2 | ||||
| -rw-r--r-- | include/linux/fs.h | 22 | ||||
| -rw-r--r-- | mm/mmap.c | 2 | ||||
| -rw-r--r-- | mm/nommu.c | 2 |
5 files changed, 18 insertions, 17 deletions
diff --git a/fs/locks.c b/fs/locks.c index 09d6c8c33c8..d82c51c4fcd 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1155,13 +1155,14 @@ EXPORT_SYMBOL(posix_lock_file_wait); /** * locks_mandatory_locked - Check for an active lock - * @inode: the file to check + * @file: the file to check * * Searches the inode's list of locks to find any POSIX locks which conflict. * This function is called from locks_verify_locked() only. */ -int locks_mandatory_locked(struct inode *inode) +int locks_mandatory_locked(struct file *file) { + struct inode *inode = file_inode(file); fl_owner_t owner = current->files; struct file_lock *fl; @@ -1172,7 +1173,7 @@ int locks_mandatory_locked(struct inode *inode) for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) { if (!IS_POSIX(fl)) continue; - if (fl->fl_owner != owner) + if (fl->fl_owner != owner && fl->fl_owner != (fl_owner_t)file) break; } spin_unlock(&inode->i_lock); diff --git a/fs/namei.c b/fs/namei.c index d580df2e680..dc51bac037c 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2542,7 +2542,7 @@ static int handle_truncate(struct file *filp) /* * Refuse to truncate files with mandatory locks held on them. */ - error = locks_verify_locked(inode); + error = locks_verify_locked(filp); if (!error) error = security_path_truncate(path); if (!error) { diff --git a/include/linux/fs.h b/include/linux/fs.h index ae91dce8a54..4aa81e6ae06 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1912,6 +1912,11 @@ extern int current_umask(void); extern void ihold(struct inode * inode); extern void iput(struct inode *); +static inline struct inode *file_inode(struct file *f) +{ + return f->f_inode; +} + /* /sys/fs */ extern struct kobject *fs_kobj; @@ -1921,7 +1926,7 @@ extern struct kobject *fs_kobj; #define FLOCK_VERIFY_WRITE 2 #ifdef CONFIG_FILE_LOCKING -extern int locks_mandatory_locked(struct inode *); +extern int locks_mandatory_locked(struct file *); extern int locks_mandatory_area(int, struct inode *, struct file *, loff_t, size_t); /* @@ -1944,10 +1949,10 @@ static inline int mandatory_lock(struct inode *ino) return IS_MANDLOCK(ino) && __mandatory_lock(ino); } -static inline int locks_verify_locked(struct inode *inode) +static inline int locks_verify_locked(struct file *file) { - if (mandatory_lock(inode)) - return locks_mandatory_locked(inode); + if (mandatory_lock(file_inode(file))) + return locks_mandatory_locked(file); return 0; } @@ -2008,7 +2013,7 @@ static inline int break_deleg_wait(struct inode **delegated_inode) } #else /* !CONFIG_FILE_LOCKING */ -static inline int locks_mandatory_locked(struct inode *inode) +static inline int locks_mandatory_locked(struct file *file) { return 0; } @@ -2030,7 +2035,7 @@ static inline int mandatory_lock(struct inode *inode) return 0; } -static inline int locks_verify_locked(struct inode *inode) +static inline int locks_verify_locked(struct file *file) { return 0; } @@ -2297,11 +2302,6 @@ static inline bool execute_ok(struct inode *inode) return (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode); } -static inline struct inode *file_inode(struct file *f) -{ - return f->f_inode; -} - static inline void file_start_write(struct file *file) { if (!S_ISREG(file_inode(file)->i_mode)) diff --git a/mm/mmap.c b/mm/mmap.c index 20ff0c33274..5932ce96121 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1299,7 +1299,7 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, /* * Make sure there are no mandatory locks on the file. */ - if (locks_verify_locked(inode)) + if (locks_verify_locked(file)) return -EAGAIN; vm_flags |= VM_SHARED | VM_MAYSHARE; diff --git a/mm/nommu.c b/mm/nommu.c index 8740213b164..a554e5a451c 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -995,7 +995,7 @@ static int validate_mmap_request(struct file *file, (file->f_mode & FMODE_WRITE)) return -EACCES; - if (locks_verify_locked(file_inode(file))) + if (locks_verify_locked(file)) return -EAGAIN; if (!(capabilities & BDI_CAP_MAP_DIRECT)) |