[PATCH] git: add git_mkstemp()

[git.git] / path.c

diff --git a/path.c b/path.c
index d217ef0..7ef0d1b 100644 (file)
--- a/path.c
+++ b/path.c
@@ -58,3 +58,29 @@ char *git_path(const char *fmt, ...)
                return bad_path;
        return cleanup_path(pathname);
 }
+
+
+/* git_mkstemp() - create tmp file honoring TMPDIR variable */
+int git_mkstemp(char *path, size_t len, const char *template)
+{
+       char *env, *pch = path;
+
+       if ((env = getenv("TMPDIR")) == NULL) {
+               strcpy(pch, "/tmp/");
+               len -= 5;
+       } else
+               len -= snprintf(pch, len, "%s/", env);
+
+       safe_strncpy(pch, template, len);
+
+       return mkstemp(path);
+}
+
+
+char *safe_strncpy(char *dest, const char *src, size_t n)
+{
+       strncpy(dest, src, n);
+       dest[n - 1] = '\0';
+
+       return dest;
+}