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authorPavel Roskin <proski@gnu.org>2005-07-29 10:49:14 -0400
committerJunio C Hamano <junkio@cox.net>2005-07-29 17:21:48 -0700
commite35f9824159bba94eecdf22d198799701ed60940 (patch)
tree0d1d08eec92d179ce02b4c4b5e961e0f6c1feddc /test-delta.c
parent1df092d211868b3b74f5b3981fad9b195a0bedad (diff)
downloadgit-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 'test-delta.c')
-rw-r--r--test-delta.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/test-delta.c b/test-delta.c
index 37ef86b28..e5d31ca2e 100644
--- a/test-delta.c
+++ b/test-delta.c
@@ -41,6 +41,7 @@ int main(int argc, char *argv[])
from_buf = mmap(NULL, from_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (from_buf == MAP_FAILED) {
perror(argv[2]);
+ close(fd);
return 1;
}
close(fd);
@@ -54,6 +55,7 @@ int main(int argc, char *argv[])
data_buf = mmap(NULL, data_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (data_buf == MAP_FAILED) {
perror(argv[3]);
+ close(fd);
return 1;
}
close(fd);