diff options
Diffstat (limited to 'ipc')
-rw-r--r-- | ipc/Makefile | 1 | ||||
-rw-r--r-- | ipc/ipc_sysctl.c | 1 | ||||
-rw-r--r-- | ipc/msg.c | 3 | ||||
-rw-r--r-- | ipc/namespace.c | 73 | ||||
-rw-r--r-- | ipc/sem.c | 3 | ||||
-rw-r--r-- | ipc/shm.c | 3 | ||||
-rw-r--r-- | ipc/util.c | 61 | ||||
-rw-r--r-- | ipc/util.h | 2 |
8 files changed, 87 insertions, 60 deletions
diff --git a/ipc/Makefile b/ipc/Makefile index b93bba6652f1..5fc5e33ea047 100644 --- a/ipc/Makefile +++ b/ipc/Makefile | |||
@@ -7,4 +7,5 @@ obj-$(CONFIG_SYSVIPC) += util.o msgutil.o msg.o sem.o shm.o | |||
7 | obj-$(CONFIG_SYSVIPC_SYSCTL) += ipc_sysctl.o | 7 | obj-$(CONFIG_SYSVIPC_SYSCTL) += ipc_sysctl.o |
8 | obj_mq-$(CONFIG_COMPAT) += compat_mq.o | 8 | obj_mq-$(CONFIG_COMPAT) += compat_mq.o |
9 | obj-$(CONFIG_POSIX_MQUEUE) += mqueue.o msgutil.o $(obj_mq-y) | 9 | obj-$(CONFIG_POSIX_MQUEUE) += mqueue.o msgutil.o $(obj_mq-y) |
10 | obj-$(CONFIG_IPC_NS) += namespace.o | ||
10 | 11 | ||
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c index 79e24e878c1e..7f4235bed51b 100644 --- a/ipc/ipc_sysctl.c +++ b/ipc/ipc_sysctl.c | |||
@@ -14,6 +14,7 @@ | |||
14 | #include <linux/nsproxy.h> | 14 | #include <linux/nsproxy.h> |
15 | #include <linux/sysctl.h> | 15 | #include <linux/sysctl.h> |
16 | #include <linux/uaccess.h> | 16 | #include <linux/uaccess.h> |
17 | #include <linux/ipc_namespace.h> | ||
17 | 18 | ||
18 | static void *get_ipc(ctl_table *table) | 19 | static void *get_ipc(ctl_table *table) |
19 | { | 20 | { |
@@ -36,6 +36,7 @@ | |||
36 | #include <linux/seq_file.h> | 36 | #include <linux/seq_file.h> |
37 | #include <linux/rwsem.h> | 37 | #include <linux/rwsem.h> |
38 | #include <linux/nsproxy.h> | 38 | #include <linux/nsproxy.h> |
39 | #include <linux/ipc_namespace.h> | ||
39 | 40 | ||
40 | #include <asm/current.h> | 41 | #include <asm/current.h> |
41 | #include <asm/uaccess.h> | 42 | #include <asm/uaccess.h> |
@@ -90,6 +91,7 @@ static void __msg_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids) | |||
90 | ipc_init_ids(ids); | 91 | ipc_init_ids(ids); |
91 | } | 92 | } |
92 | 93 | ||
94 | #ifdef CONFIG_IPC_NS | ||
93 | int msg_init_ns(struct ipc_namespace *ns) | 95 | int msg_init_ns(struct ipc_namespace *ns) |
94 | { | 96 | { |
95 | struct ipc_ids *ids; | 97 | struct ipc_ids *ids; |
@@ -128,6 +130,7 @@ void msg_exit_ns(struct ipc_namespace *ns) | |||
128 | kfree(ns->ids[IPC_MSG_IDS]); | 130 | kfree(ns->ids[IPC_MSG_IDS]); |
129 | ns->ids[IPC_MSG_IDS] = NULL; | 131 | ns->ids[IPC_MSG_IDS] = NULL; |
130 | } | 132 | } |
133 | #endif | ||
131 | 134 | ||
132 | void __init msg_init(void) | 135 | void __init msg_init(void) |
133 | { | 136 | { |
diff --git a/ipc/namespace.c b/ipc/namespace.c new file mode 100644 index 000000000000..cef1139e6c96 --- /dev/null +++ b/ipc/namespace.c | |||
@@ -0,0 +1,73 @@ | |||
1 | /* | ||
2 | * linux/ipc/namespace.c | ||
3 | * Copyright (C) 2006 Pavel Emelyanov <xemul@openvz.org> OpenVZ, SWsoft Inc. | ||
4 | */ | ||
5 | |||
6 | #include <linux/ipc.h> | ||
7 | #include <linux/msg.h> | ||
8 | #include <linux/ipc_namespace.h> | ||
9 | #include <linux/rcupdate.h> | ||
10 | #include <linux/nsproxy.h> | ||
11 | #include <linux/slab.h> | ||
12 | |||
13 | #include "util.h" | ||
14 | |||
15 | static struct ipc_namespace *clone_ipc_ns(struct ipc_namespace *old_ns) | ||
16 | { | ||
17 | int err; | ||
18 | struct ipc_namespace *ns; | ||
19 | |||
20 | err = -ENOMEM; | ||
21 | ns = kmalloc(sizeof(struct ipc_namespace), GFP_KERNEL); | ||
22 | if (ns == NULL) | ||
23 | goto err_mem; | ||
24 | |||
25 | err = sem_init_ns(ns); | ||
26 | if (err) | ||
27 | goto err_sem; | ||
28 | err = msg_init_ns(ns); | ||
29 | if (err) | ||
30 | goto err_msg; | ||
31 | err = shm_init_ns(ns); | ||
32 | if (err) | ||
33 | goto err_shm; | ||
34 | |||
35 | kref_init(&ns->kref); | ||
36 | return ns; | ||
37 | |||
38 | err_shm: | ||
39 | msg_exit_ns(ns); | ||
40 | err_msg: | ||
41 | sem_exit_ns(ns); | ||
42 | err_sem: | ||
43 | kfree(ns); | ||
44 | err_mem: | ||
45 | return ERR_PTR(err); | ||
46 | } | ||
47 | |||
48 | struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns) | ||
49 | { | ||
50 | struct ipc_namespace *new_ns; | ||
51 | |||
52 | BUG_ON(!ns); | ||
53 | get_ipc_ns(ns); | ||
54 | |||
55 | if (!(flags & CLONE_NEWIPC)) | ||
56 | return ns; | ||
57 | |||
58 | new_ns = clone_ipc_ns(ns); | ||
59 | |||
60 | put_ipc_ns(ns); | ||
61 | return new_ns; | ||
62 | } | ||
63 | |||
64 | void free_ipc_ns(struct kref *kref) | ||
65 | { | ||
66 | struct ipc_namespace *ns; | ||
67 | |||
68 | ns = container_of(kref, struct ipc_namespace, kref); | ||
69 | sem_exit_ns(ns); | ||
70 | msg_exit_ns(ns); | ||
71 | shm_exit_ns(ns); | ||
72 | kfree(ns); | ||
73 | } | ||
@@ -82,6 +82,7 @@ | |||
82 | #include <linux/seq_file.h> | 82 | #include <linux/seq_file.h> |
83 | #include <linux/rwsem.h> | 83 | #include <linux/rwsem.h> |
84 | #include <linux/nsproxy.h> | 84 | #include <linux/nsproxy.h> |
85 | #include <linux/ipc_namespace.h> | ||
85 | 86 | ||
86 | #include <asm/uaccess.h> | 87 | #include <asm/uaccess.h> |
87 | #include "util.h" | 88 | #include "util.h" |
@@ -128,6 +129,7 @@ static void __sem_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids) | |||
128 | ipc_init_ids(ids); | 129 | ipc_init_ids(ids); |
129 | } | 130 | } |
130 | 131 | ||
132 | #ifdef CONFIG_IPC_NS | ||
131 | int sem_init_ns(struct ipc_namespace *ns) | 133 | int sem_init_ns(struct ipc_namespace *ns) |
132 | { | 134 | { |
133 | struct ipc_ids *ids; | 135 | struct ipc_ids *ids; |
@@ -165,6 +167,7 @@ void sem_exit_ns(struct ipc_namespace *ns) | |||
165 | kfree(ns->ids[IPC_SEM_IDS]); | 167 | kfree(ns->ids[IPC_SEM_IDS]); |
166 | ns->ids[IPC_SEM_IDS] = NULL; | 168 | ns->ids[IPC_SEM_IDS] = NULL; |
167 | } | 169 | } |
170 | #endif | ||
168 | 171 | ||
169 | void __init sem_init (void) | 172 | void __init sem_init (void) |
170 | { | 173 | { |
@@ -38,6 +38,7 @@ | |||
38 | #include <linux/rwsem.h> | 38 | #include <linux/rwsem.h> |
39 | #include <linux/nsproxy.h> | 39 | #include <linux/nsproxy.h> |
40 | #include <linux/mount.h> | 40 | #include <linux/mount.h> |
41 | #include <linux/ipc_namespace.h> | ||
41 | 42 | ||
42 | #include <asm/uaccess.h> | 43 | #include <asm/uaccess.h> |
43 | 44 | ||
@@ -96,6 +97,7 @@ static void do_shm_rmid(struct ipc_namespace *ns, struct shmid_kernel *shp) | |||
96 | shm_destroy(ns, shp); | 97 | shm_destroy(ns, shp); |
97 | } | 98 | } |
98 | 99 | ||
100 | #ifdef CONFIG_IPC_NS | ||
99 | int shm_init_ns(struct ipc_namespace *ns) | 101 | int shm_init_ns(struct ipc_namespace *ns) |
100 | { | 102 | { |
101 | struct ipc_ids *ids; | 103 | struct ipc_ids *ids; |
@@ -133,6 +135,7 @@ void shm_exit_ns(struct ipc_namespace *ns) | |||
133 | kfree(ns->ids[IPC_SHM_IDS]); | 135 | kfree(ns->ids[IPC_SHM_IDS]); |
134 | ns->ids[IPC_SHM_IDS] = NULL; | 136 | ns->ids[IPC_SHM_IDS] = NULL; |
135 | } | 137 | } |
138 | #endif | ||
136 | 139 | ||
137 | void __init shm_init (void) | 140 | void __init shm_init (void) |
138 | { | 141 | { |
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 | ||
54 | static 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 | |||
77 | err_shm: | ||
78 | msg_exit_ns(ns); | ||
79 | err_msg: | ||
80 | sem_exit_ns(ns); | ||
81 | err_sem: | ||
82 | kfree(ns); | ||
83 | err_mem: | ||
84 | return ERR_PTR(err); | ||
85 | } | ||
86 | |||
87 | struct 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 | |||
103 | void 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 | * |
diff --git a/ipc/util.h b/ipc/util.h index 9ffea40457ce..fc6b7294f764 100644 --- a/ipc/util.h +++ b/ipc/util.h | |||
@@ -20,6 +20,8 @@ void sem_init (void); | |||
20 | void msg_init (void); | 20 | void msg_init (void); |
21 | void shm_init (void); | 21 | void shm_init (void); |
22 | 22 | ||
23 | struct ipc_namespace; | ||
24 | |||
23 | int sem_init_ns(struct ipc_namespace *ns); | 25 | int sem_init_ns(struct ipc_namespace *ns); |
24 | int msg_init_ns(struct ipc_namespace *ns); | 26 | int msg_init_ns(struct ipc_namespace *ns); |
25 | int shm_init_ns(struct ipc_namespace *ns); | 27 | int shm_init_ns(struct ipc_namespace *ns); |