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| author | Pavel Roskin <proski@gnu.org> | 2005-07-29 10:49:14 -0400 |
|---|---|---|
| committer | Junio C Hamano <junkio@cox.net> | 2005-07-29 17:21:48 -0700 |
| commit | e35f9824159bba94eecdf22d198799701ed60940 (patch) | |
| tree | 0d1d08eec92d179ce02b4c4b5e961e0f6c1feddc /diffcore-order.c | |
| parent | 1df092d211868b3b74f5b3981fad9b195a0bedad (diff) | |
| download | git-e35f9824159bba94eecdf22d198799701ed60940.tar.gz git-e35f9824159bba94eecdf22d198799701ed60940.tar.xz | |
[PATCH] mmap error handling
I have reviewed all occurrences of mmap() in git and fixed three types
of errors/defects:
1) The result is not checked.
2) The file descriptor is closed if mmap() succeeds, but not when it
fails.
3) Various casts applied to -1 are used instead of MAP_FAILED, which is
specifically defined to check mmap() return value.
[jc: This is a second round of Pavel's patch. He fixed up the problem
that close() potentially clobbering the errno from mmap, which
the first round had.]
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'diffcore-order.c')
| -rw-r--r-- | diffcore-order.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/diffcore-order.c b/diffcore-order.c index a03862c1c..b38122361 100644 --- a/diffcore-order.c +++ b/diffcore-order.c @@ -28,7 +28,7 @@ static void prepare_order(const char *orderfile) } map = mmap(NULL, st.st_size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0); close(fd); - if (-1 == (int)(long)map) + if (map == MAP_FAILED) return; endp = map + st.st_size; for (pass = 0; pass < 2; pass++) { |