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filter_buffer_or_fd(): ignore EPIPE 

We are explicitly ignoring SIGPIPE, as we fully expect that the
filter program may not read our output fully.  Ignore EPIPE that
may come from writing to it as well.

A new test was stolen from Jeff's suggestion.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2015-05-19 11:08:23 -07:00
parent 00b7cbfcb3
commit 0c4dd67a04
2 changed files with 16 additions and 1 deletions
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7
convert.c
View File

@ -356,9 +356,14 @@ static int filter_buffer_or_fd(int in, int out, void *data)
sigchain_push(SIGPIPE, SIG_IGN);
if (params->src) {
write_err = (write_in_full(child_process.in, params->src, params->size) < 0);
write_err = (write_in_full(child_process.in,
params->src, params->size) < 0);
if (errno == EPIPE)
write_err = 0;
} else {
write_err = copy_fd(params->fd, child_process.in);
if (write_err == COPY_WRITE_ERROR && errno == EPIPE)
write_err = 0;
}
if (close(child_process.in))

10
t/t0021-conversion.sh
View File

@ -204,6 +204,16 @@ test_expect_success 'filtering large input to small output should use little mem
GIT_MMAP_LIMIT=1m GIT_ALLOC_LIMIT=1m git add 30MB
'
test_expect_success 'filter that does not read is fine' '
test-genrandom foo $((128 * 1024 + 1)) >big &&
echo "big filter=epipe" >.gitattributes &&
git config filter.epipe.clean "echo xyzzy" &&
git add big &&
git cat-file blob :big >actual &&
echo xyzzy >expect &&
test_cmp expect actual
'
test_expect_success EXPENSIVE 'filter large file' '
git config filter.largefile.smudge cat &&
git config filter.largefile.clean cat &&