From bf1e6da79157ff765fc92b45ac96442b9f56ff8b Mon Sep 17 00:00:00 2001 From: =?utf8?q?Carlo=20Marcelo=20Arenas=20Bel=C3=B3n?= Date: Tue, 23 Oct 2018 05:35:19 -0700 Subject: [PATCH] compat: make sure git_mmap is not expected to write MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit in f48000fc ("Yank writing-back support from gitfakemmap.", 2005-10-08) support for writting back changes was removed but the specific prot flag that would be used was not checked for Signed-off-by: Carlo Marcelo Arenas Belón Acked-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- compat/mmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/compat/mmap.c b/compat/mmap.c index 7f662fef7b..14d31010df 100644 --- a/compat/mmap.c +++ b/compat/mmap.c @@ -4,7 +4,7 @@ void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t of { size_t n = 0; - if (start != NULL || !(flags & MAP_PRIVATE)) + if (start != NULL || flags != MAP_PRIVATE || prot != PROT_READ) die("Invalid usage of mmap when built with NO_MMAP"); start = xmalloc(length); -- 2.39.2