[Sheepdog] [PATCH] collie: silence semaphore warning with multiple local collie daemons

[FUJITA Tomonori]

We get semaphore warnings if multiple collie daemons run on the local
host.

Signed-off-by: FUJITA Tomonori <fujita.tomonori at lab.ntt.co.jp>
---
 lib/logger.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/logger.c b/lib/logger.c
index 817fd0e..41dc0af 100644
--- a/lib/logger.c
+++ b/lib/logger.c
@@ -34,7 +34,6 @@
 
 #include "logger.h"
 
-#define SEMKEY	0xA8L
 #define LOGDBG 0
 
 #if LOGDBG
@@ -47,6 +46,7 @@ static struct logarea *la;
 static char *log_name;
 static int log_level;
 static pid_t pid;
+static key_t semkey;
 
 static int logarea_init (int size)
 {
@@ -110,7 +110,7 @@ static int logarea_init (int size)
 
 	shmctl(shmid, IPC_RMID, NULL);
 
-	if ((la->semid = semget(SEMKEY, 1, 0666 | IPC_CREAT)) < 0) {
+	if ((la->semid = semget(semkey, 1, 0666 | IPC_CREAT)) < 0) {
 		syslog(LOG_ERR, "semget failed %d", errno);
 		shmdt(la->buff);
 		shmdt(la->start);
@@ -349,6 +349,8 @@ int log_init(char *program_name, int size, int daemon, int level)
 	logdbg(stderr,"enter log_init\n");
 	log_name = program_name;
 
+	semkey = random();
+
 	if (daemon) {
 		struct sigaction sa_old;
 		struct sigaction sa_new;
-- 
1.7.0