Libc-763.11.tar.gz

[apple/libc.git] / stdio / FreeBSD / tmpnam.c.patch

diff --git a/stdio/FreeBSD/tmpnam.c.patch b/stdio/FreeBSD/tmpnam.c.patch
new file mode 100644 (file)
index 0000000..5ff86df
--- /dev/null
+++ b/stdio/FreeBSD/tmpnam.c.patch
@@ -0,0 +1,41 @@
+--- tmpnam.c.orig      2010-07-06 16:02:20.000000000 -0700
++++ tmpnam.c   2010-07-06 16:32:52.000000000 -0700
+@@ -40,21 +40,35 @@ __FBSDID("$FreeBSD: src/lib/libc/stdio/t
+ 
+ #include <stdio.h>
+ #include <unistd.h>
++#include <pthread.h>
++#include <stdlib.h>
+ 
+ __warn_references(tmpnam,
+     "warning: tmpnam() possibly used unsafely; consider using mkstemp()");
+ 
+ extern char *_mktemp(char *);
+ 
++static char *tmpnam_buf = NULL;
++static pthread_once_t tmpnam_buf_control = PTHREAD_ONCE_INIT;
++
++static void tmpnam_buf_allocate(void)
++{
++      tmpnam_buf = malloc(L_tmpnam);
++}
++
+ char *
+ tmpnam(s)
+       char *s;
+ {
+       static u_long tmpcount;
+-      static char buf[L_tmpnam];
+ 
+-      if (s == NULL)
+-              s = buf;
++      if (s == NULL) {
++              if (pthread_once(&tmpnam_buf_control, tmpnam_buf_allocate)
++                      || !tmpnam_buf) {
++                      return NULL;
++              }
++              s = tmpnam_buf;
++      }
+       (void)snprintf(s, L_tmpnam, "%stmp.%lu.XXXXXX", P_tmpdir, tmpcount);
+       ++tmpcount;
+       return (_mktemp(s));