diff options
Diffstat (limited to 'ipc/util.c')
| -rw-r--r-- | ipc/util.c | 23 |
1 files changed, 2 insertions, 21 deletions
diff --git a/ipc/util.c b/ipc/util.c index e72865f677a7..9b0c4e7753af 100644 --- a/ipc/util.c +++ b/ipc/util.c @@ -678,7 +678,7 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id) out = idr_find(&ids->ipcs_idr, lid); if (out == NULL) { rcu_read_unlock(); - return NULL; + return ERR_PTR(-EINVAL); } spin_lock(&out->lock); @@ -689,36 +689,17 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id) if (out->deleted) { spin_unlock(&out->lock); rcu_read_unlock(); - return NULL; + return ERR_PTR(-EINVAL); } return out; } -void ipc_lock_by_ptr(struct kern_ipc_perm *perm) -{ - rcu_read_lock(); - spin_lock(&perm->lock); -} - -void ipc_unlock(struct kern_ipc_perm* perm) -{ - spin_unlock(&perm->lock); - rcu_read_unlock(); -} - int ipc_buildid(struct ipc_ids* ids, int id, int seq) { return SEQ_MULTIPLIER*seq + id; } -int ipc_checkid(struct ipc_ids* ids, struct kern_ipc_perm* ipcp, int uid) -{ - if(uid/SEQ_MULTIPLIER != ipcp->seq) - return 1; - return 0; -} - #ifdef __ARCH_WANT_IPC_PARSE_VERSION |