X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=src%2Fthread%2Fsem_open.c;h=de8555c5a6869ceda20c956cc6c8d1ea8470a138;hb=1ef37aa00ea830dfda76e04e3d941cafa74d8b76;hp=66f12ee42000450e5b26ef56b51f11b61ad835ab;hpb=a033cd22aa0ecd9f494b74669d358e7e1c7e1335;p=musl

diff --git a/src/thread/sem_open.c b/src/thread/sem_open.c
index 66f12ee4..de8555c5 100644
--- a/src/thread/sem_open.c
+++ b/src/thread/sem_open.c
@@ -11,16 +11,14 @@
 #include <sys/stat.h>
 #include <stdlib.h>
 #include <pthread.h>
-#include "libc.h"
-
-char *__shm_mapname(const char *, char *);
+#include "lock.h"
 
 static struct {
 	ino_t ino;
 	sem_t *sem;
 	int refcnt;
 } *semtab;
-static int lock[2];
+static volatile int lock[1];
 
 #define FLAGS (O_RDWR|O_NOFOLLOW|O_CLOEXEC|O_NONBLOCK)
 
@@ -123,9 +121,10 @@ sem_t *sem_open(const char *name, int flags, ...)
 			goto fail;
 		}
 		close(fd);
-		if (link(tmp, name) == 0) break;
-		e = errno;
+		e = link(tmp, name) ? errno : 0;
 		unlink(tmp);
+		if (!e) break;
+		munmap(map, sizeof(sem_t));
 		/* Failure is only fatal when doing an exclusive open;
 		 * otherwise, next iteration will try to open the
 		 * existing file. */