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| author | Jiri Kosina <jkosina@suse.cz> | 2018-06-08 10:20:42 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2018-06-08 10:20:42 +0200 |
| commit | c1144d29f405ce1f4e6ede6482beb3d0d09750c6 (patch) | |
| tree | 0f9fe36a50005bae6ffe28a4f978e71273f5b1d1 /ipc/sem.c | |
| parent | d6c70a86bc72fabe7fc9d9533afdb46a56c16896 (diff) | |
| parent | a317e559574b2af62095b39792d168cb98cb2561 (diff) | |
Merge branch 'for-4.18/alps' into for-linus
hid-alps driver cleanups wrt. t4_read_write_register() handling
from Christophe Jaillet
Diffstat (limited to 'ipc/sem.c')
| -rw-r--r-- | ipc/sem.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index 2994da8ccc7f..06be75d9217a 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -1220,14 +1220,14 @@ static int semctl_stat(struct ipc_namespace *ns, int semid, memset(semid64, 0, sizeof(*semid64)); rcu_read_lock(); - if (cmd == SEM_STAT) { + if (cmd == SEM_STAT || cmd == SEM_STAT_ANY) { sma = sem_obtain_object(ns, semid); if (IS_ERR(sma)) { err = PTR_ERR(sma); goto out_unlock; } id = sma->sem_perm.id; - } else { + } else { /* IPC_STAT */ sma = sem_obtain_object_check(ns, semid); if (IS_ERR(sma)) { err = PTR_ERR(sma); @@ -1235,9 +1235,14 @@ static int semctl_stat(struct ipc_namespace *ns, int semid, } } - err = -EACCES; - if (ipcperms(ns, &sma->sem_perm, S_IRUGO)) - goto out_unlock; + /* see comment for SHM_STAT_ANY */ + if (cmd == SEM_STAT_ANY) + audit_ipc_obj(&sma->sem_perm); + else { + err = -EACCES; + if (ipcperms(ns, &sma->sem_perm, S_IRUGO)) + goto out_unlock; + } err = security_sem_semctl(&sma->sem_perm, cmd); if (err) @@ -1626,6 +1631,7 @@ long ksys_semctl(int semid, int semnum, int cmd, unsigned long arg) return semctl_info(ns, semid, cmd, p); case IPC_STAT: case SEM_STAT: + case SEM_STAT_ANY: err = semctl_stat(ns, semid, cmd, &semid64); if (err < 0) return err; @@ -1732,6 +1738,7 @@ long compat_ksys_semctl(int semid, int semnum, int cmd, int arg) return semctl_info(ns, semid, cmd, p); case IPC_STAT: case SEM_STAT: + case SEM_STAT_ANY: err = semctl_stat(ns, semid, cmd, &semid64); if (err < 0) return err; |