use alt signal stack when present for implementation-internal signals

[musl] / src / stdio / tmpfile.c

diff --git a/src/stdio/tmpfile.c b/src/stdio/tmpfile.c
index b050f7f..ae49398 100644 (file)
--- a/src/stdio/tmpfile.c
+++ b/src/stdio/tmpfile.c
@@ -1,23 +1,31 @@
 #include <stdio.h>
 #include <fcntl.h>
-#include <unistd.h>
+#include <stdlib.h>
 #include "stdio_impl.h"
 
+#define MAXTRIES 100
+
 FILE *tmpfile(void)
 {
-       char buf[L_tmpnam], *s;
+       char s[] = "/tmp/tmpfile_XXXXXX";
        int fd;
        FILE *f;
-       for (;;) {
-               s = tmpnam(buf);
-               if (!s) return NULL;
-               fd = syscall(SYS_open, s, O_RDWR|O_CREAT|O_EXCL|O_LARGEFILE, 0600);
+       int try;
+       for (try=0; try<MAXTRIES; try++) {
+               __randname(s+13);
+               fd = sys_open(s, O_RDWR|O_CREAT|O_EXCL, 0600);
                if (fd >= 0) {
+#ifdef SYS_unlink
+                       __syscall(SYS_unlink, s);
+#else
+                       __syscall(SYS_unlinkat, AT_FDCWD, s, 0);
+#endif
                        f = __fdopen(fd, "w+");
-                       remove(s);
+                       if (!f) __syscall(SYS_close, fd);
                        return f;
                }
        }
+       return 0;
 }
 
-LFS64(tmpfile);
+weak_alias(tmpfile, tmpfile64);