diff options
Diffstat (limited to 'fs/fcntl.c')
| -rw-r--r-- | fs/fcntl.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/fcntl.c b/fs/fcntl.c index 693322e28751..afed3b364979 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -112,8 +112,9 @@ EXPORT_SYMBOL(__f_setown); int f_setown(struct file *filp, unsigned long arg, int force) { enum pid_type type; - struct pid *pid; - int who = arg; + struct pid *pid = NULL; + int who = arg, ret = 0; + type = PIDTYPE_PID; if (who < 0) { /* avoid overflow below */ @@ -123,12 +124,19 @@ int f_setown(struct file *filp, unsigned long arg, int force) type = PIDTYPE_PGID; who = -who; } + rcu_read_lock(); - pid = find_vpid(who); - __f_setown(filp, pid, type, force); + if (who) { + pid = find_vpid(who); + if (!pid) + ret = -ESRCH; + } + + if (!ret) + __f_setown(filp, pid, type, force); rcu_read_unlock(); - return 0; + return ret; } EXPORT_SYMBOL(f_setown); |