From f6cfb61578920a2aba19afbf320e007efd863730 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 8 Aug 2002 07:28:33 +0000
Subject: Fix locking  -Erik

---
 libc/pwd_grp/getpwuid.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'libc/pwd_grp/getpwuid.c')

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;
 }
 
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