Introduce usagef() that takes a printf-style format

diff --git a/path.c b/path.c
index 8a0a6741fd664f98f2883348c0a755d60616035b..047fdb0a1fe8151f5f275ca5333365df786a8abd 100644 (file)
--- a/path.c
+++ b/path.c
@@ -139,6 +139,22 @@ int git_mkstemp(char *path, size_t len, const char *template)
        return mkstemp(path);
 }
 
+/* git_mkstemps() - create tmp file with suffix honoring TMPDIR variable. */
+int git_mkstemps(char *path, size_t len, const char *template, int suffix_len)
+{
+       const char *tmp;
+       size_t n;
+
+       tmp = getenv("TMPDIR");
+       if (!tmp)
+               tmp = "/tmp";
+       n = snprintf(path, len, "%s/%s", tmp, template);
+       if (len <= n) {
+               errno = ENAMETOOLONG;
+               return -1;
+       }
+       return mkstemps(path, suffix_len);
+}
 
 int validate_headref(const char *path)
 {