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Diffstat (limited to 'libc/pwd_grp/getpwuid.c')
-rw-r--r--libc/pwd_grp/getpwuid.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/libc/pwd_grp/getpwuid.c b/libc/pwd_grp/getpwuid.c
index ff3637abe..48ee6123d 100644
--- a/libc/pwd_grp/getpwuid.c
+++ b/libc/pwd_grp/getpwuid.c
@@ -18,12 +18,23 @@
*
*/
+#include <features.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <paths.h>
#include "config.h"
+#ifdef __UCLIBC_HAS_THREADS__
+#include <pthread.h>
+static pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER;
+# define LOCK pthread_mutex_lock(&mylock)
+# define UNLOCK pthread_mutex_unlock(&mylock);
+#else
+# define LOCK
+# define UNLOCK
+#endif
+
int getpwuid_r (uid_t uid, struct passwd *password,
char *buff, size_t buflen, struct passwd **crap)
{
@@ -48,9 +59,12 @@ struct passwd *getpwuid(uid_t uid)
static char line_buff[PWD_BUFFER_SIZE];
static struct passwd pwd;
+ LOCK;
if (getpwuid_r(uid, &pwd, line_buff, sizeof(line_buff), NULL) != -1) {
+ UNLOCK;
return &pwd;
}
+ UNLOCK;
return NULL;
}