lockfile.c: add a new public function unable_to_lock_message

diff --git a/lockfile.c b/lockfile.c
index 8fbcb6a98aae85b48c6f8de29c6f95af58823411..464031bf1ca6cd389e47ce35f87edb26d528ca00 100644 (file)
--- a/lockfile.c
+++ b/lockfile.c
@@ -157,33 +157,35 @@ static int lock_file(struct lock_file *lk, const char *path, int flags)
        return lk->fd;
 }
 
-static char *unable_to_lock_message(const char *path, int err)
+void unable_to_lock_message(const char *path, int err, struct strbuf *buf)
 {
-       struct strbuf buf = STRBUF_INIT;
-
        if (err == EEXIST) {
-               strbuf_addf(&buf, "Unable to create '%s.lock': %s.\n\n"
+               strbuf_addf(buf, "Unable to create '%s.lock': %s.\n\n"
                    "If no other git process is currently running, this probably means a\n"
                    "git process crashed in this repository earlier. Make sure no other git\n"
                    "process is running and remove the file manually to continue.",
                            absolute_path(path), strerror(err));
        } else
-               strbuf_addf(&buf, "Unable to create '%s.lock': %s",
+               strbuf_addf(buf, "Unable to create '%s.lock': %s",
                            absolute_path(path), strerror(err));
-       return strbuf_detach(&buf, NULL);
 }
 
 int unable_to_lock_error(const char *path, int err)
 {
-       char *msg = unable_to_lock_message(path, err);
-       error("%s", msg);
-       free(msg);
+       struct strbuf buf = STRBUF_INIT;
+
+       unable_to_lock_message(path, err, &buf);
+       error("%s", buf.buf);
+       strbuf_release(&buf);
        return -1;
 }
 
 NORETURN void unable_to_lock_index_die(const char *path, int err)
 {
-       die("%s", unable_to_lock_message(path, err));
+       struct strbuf buf = STRBUF_INIT;
+
+       unable_to_lock_message(path, err, &buf);
+       die("%s", buf.buf);
 }
 
 int hold_lock_file_for_update(struct lock_file *lk, const char *path, int flags)