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authorEric W. Biederman <ebiederm@xmission.com>2018-03-23 05:34:44 +0300
committerEric W. Biederman <ebiederm@xmission.com>2018-03-24 19:25:21 +0300
commita2e102cd3cdd8b7a14e08716510707b15802073f (patch)
tree42e20f6520be397fece15e2105bf40903c707a5c /ipc
parent1a5c1349d105df5196ad9025e271b02a4dc05aee (diff)
downloadlinux-a2e102cd3cdd8b7a14e08716510707b15802073f.tar.xz
shm: Move struct shmid_kernel into ipc/shm.c
All of the users are now in ipc/shm.c so make the definition local to that file to make code maintenance easier. AKA to prevent rebuilding the entire kernel when struct shmid_kernel changes. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/shm.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index 387a786e7be1..0565669ebe5c 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -48,6 +48,28 @@
#include "util.h"
+struct shmid_kernel /* private to the kernel */
+{
+ struct kern_ipc_perm shm_perm;
+ struct file *shm_file;
+ unsigned long shm_nattch;
+ unsigned long shm_segsz;
+ time64_t shm_atim;
+ time64_t shm_dtim;
+ time64_t shm_ctim;
+ pid_t shm_cprid;
+ pid_t shm_lprid;
+ struct user_struct *mlock_user;
+
+ /* The task created the shm object. NULL if the task is dead. */
+ struct task_struct *shm_creator;
+ struct list_head shm_clist; /* list by creator */
+} __randomize_layout;
+
+/* shm_mode upper byte flags */
+#define SHM_DEST 01000 /* segment will be destroyed on last detach */
+#define SHM_LOCKED 02000 /* segment will not be swapped */
+
struct shm_file_data {
int id;
struct ipc_namespace *ns;