git submodule update: have a dedicated helper for cloning

diff --git a/strbuf.c b/strbuf.c
index 38686ffb65c2de953f9b224a5eecd22188081417..5f6da82e7e57481f4aba41fdcb5978593a92a10a 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -395,6 +395,12 @@ ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint)
        return cnt;
 }
 
+ssize_t strbuf_write(struct strbuf *sb, FILE *f)
+{
+       return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0;
+}
+
+
 #define STRBUF_MAXLINK (2*PATH_MAX)
 
 int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)