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Diffstat (limited to 'ipc/util.c')
-rw-r--r--ipc/util.c23
1 files changed, 2 insertions, 21 deletions
diff --git a/ipc/util.c b/ipc/util.c
index e72865f..9b0c4e7 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
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