X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=ipc%2Futil.h;h=eeb79a1fbd834eda23027624824faf94bfb2f459;hb=5da1f88b8b727dc3a66c52d4513e871be6d43d19;hp=c8fe2f7631e9b616177d69c8ac614e901db669d2;hpb=684baeb1d78ac478a8e5f00aa9ab0ce0837f2a91;p=firefly-linux-kernel-4.4.55.git

diff --git a/ipc/util.h b/ipc/util.h
index c8fe2f7631e9..eeb79a1fbd83 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -92,6 +92,7 @@ void __init ipc_init_proc_interface(const char *path, const char *header,
 #define IPC_SHM_IDS	2
 
 #define ipcid_to_idx(id) ((id) % SEQ_MULTIPLIER)
+#define ipcid_to_seqx(id) ((id) / SEQ_MULTIPLIER)
 
 /* must be called with ids->rw_mutex acquired for writing */
 int ipc_addid(struct ipc_ids *, struct kern_ipc_perm *, int);
@@ -139,6 +140,7 @@ int ipc_parse_version (int *cmd);
 
 extern void free_msg(struct msg_msg *msg);
 extern struct msg_msg *load_msg(const void __user *src, int len);
+extern struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst);
 extern int store_msg(void __user *dest, struct msg_msg *msg, int len);
 
 extern void recompute_msgmni(struct ipc_namespace *);