dns query core: detect udp truncation at recv time

[musl] / src / stdio / tempnam.c

diff --git a/src/stdio/tempnam.c b/src/stdio/tempnam.c
index 9bf8c72..0c65b1f 100644 (file)
--- a/src/stdio/tempnam.c
+++ b/src/stdio/tempnam.c
@@ -4,12 +4,11 @@
 #include <sys/stat.h>
 #include <limits.h>
 #include <string.h>
+#include <stdlib.h>
 #include "syscall.h"
 
 #define MAXTRIES 100
 
-char *__randname(char *);
-
 char *tempnam(const char *dir, const char *pfx)
 {
        char s[PATH_MAX];
@@ -33,10 +32,15 @@ char *tempnam(const char *dir, const char *pfx)
        s[dl] = '/';
        memcpy(s+dl+1, pfx, pl);
        s[dl+1+pl] = '_';
+       s[l] = 0;
 
        for (try=0; try<MAXTRIES; try++) {
                __randname(s+l-6);
-               r = __syscall(SYS_lstat, s, &(struct stat){0});
+#ifdef SYS_readlink
+               r = __syscall(SYS_readlink, s, (char[1]){0}, 1);
+#else
+               r = __syscall(SYS_readlinkat, AT_FDCWD, s, (char[1]){0}, 1);
+#endif
                if (r == -ENOENT) return strdup(s);
        }
        return 0;