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-rw-r--r--ipc/util.c61
1 files changed, 1 insertions, 60 deletions
diff --git a/ipc/util.c b/ipc/util.c
index 76c1f3461e22..5432b8e34c9b 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -33,6 +33,7 @@
33#include <linux/audit.h> 33#include <linux/audit.h>
34#include <linux/nsproxy.h> 34#include <linux/nsproxy.h>
35#include <linux/rwsem.h> 35#include <linux/rwsem.h>
36#include <linux/ipc_namespace.h>
36 37
37#include <asm/unistd.h> 38#include <asm/unistd.h>
38 39
@@ -51,66 +52,6 @@ struct ipc_namespace init_ipc_ns = {
51 }, 52 },
52}; 53};
53 54
54static struct ipc_namespace *clone_ipc_ns(struct ipc_namespace *old_ns)
55{
56 int err;
57 struct ipc_namespace *ns;
58
59 err = -ENOMEM;
60 ns = kmalloc(sizeof(struct ipc_namespace), GFP_KERNEL);
61 if (ns == NULL)
62 goto err_mem;
63
64 err = sem_init_ns(ns);
65 if (err)
66 goto err_sem;
67 err = msg_init_ns(ns);
68 if (err)
69 goto err_msg;
70 err = shm_init_ns(ns);
71 if (err)
72 goto err_shm;
73
74 kref_init(&ns->kref);
75 return ns;
76
77err_shm:
78 msg_exit_ns(ns);
79err_msg:
80 sem_exit_ns(ns);
81err_sem:
82 kfree(ns);
83err_mem:
84 return ERR_PTR(err);
85}
86
87struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns)
88{
89 struct ipc_namespace *new_ns;
90
91 BUG_ON(!ns);
92 get_ipc_ns(ns);
93
94 if (!(flags & CLONE_NEWIPC))
95 return ns;
96
97 new_ns = clone_ipc_ns(ns);
98
99 put_ipc_ns(ns);
100 return new_ns;
101}
102
103void free_ipc_ns(struct kref *kref)
104{
105 struct ipc_namespace *ns;
106
107 ns = container_of(kref, struct ipc_namespace, kref);
108 sem_exit_ns(ns);
109 msg_exit_ns(ns);
110 shm_exit_ns(ns);
111 kfree(ns);
112}
113
114/** 55/**
115 * ipc_init - initialise IPC subsystem 56 * ipc_init - initialise IPC subsystem
116 * 57 *