From 4635768809885bb1c063bc9f9eee38e413f85f0d Mon Sep 17 00:00:00 2001 From: Jeff King Date: Thu, 24 Sep 2015 17:07:47 -0400 Subject: [PATCH] remove_leading_path: use a strbuf for internal storage This function strcpy's directly into a PATH_MAX-sized buffer. There's only one caller, which feeds the git_dir into it, so it's not easy to trigger in practice (even if you fed a large $GIT_DIR through the environment or .git file, it would have to actually exist and be accessible on the filesystem to get to this point). We can fix it by moving to a strbuf. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- path.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/path.c b/path.c index 60e0390906..c597473e62 100644 --- a/path.c +++ b/path.c @@ -632,7 +632,7 @@ const char *relative_path(const char *in, const char *prefix, */ const char *remove_leading_path(const char *in, const char *prefix) { - static char buf[PATH_MAX + 1]; + static struct strbuf buf = STRBUF_INIT; int i = 0, j = 0; if (!prefix || !prefix[0]) @@ -661,11 +661,13 @@ const char *remove_leading_path(const char *in, const char *prefix) return in; while (is_dir_sep(in[j])) j++; + + strbuf_reset(&buf); if (!in[j]) - strcpy(buf, "."); + strbuf_addstr(&buf, "."); else - strcpy(buf, in + j); - return buf; + strbuf_addstr(&buf, in + j); + return buf.buf; } /* -- 2.39.2