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send-pack: report signal death of pack-objects 

If our pack-objects sub-process dies of a signal, then it
likely didn't have a chance to write anything useful to
stderr. The user may be left scratching their head why the
push failed. Let's detect this situation and write something
to stderr.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2017-03-07 08:39:48 -05:00 committed by Junio C Hamano
parent ba69f92db6
commit d1a13d3fcb
1 changed files with 14 additions and 1 deletions
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15
send-pack.c
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@ -72,6 +72,7 @@ static int pack_objects(int fd, struct ref *refs, struct sha1_array *extra, stru
struct child_process po = CHILD_PROCESS_INIT;
FILE *po_in;
int i;
int rc;
i = 4;
if (args->use_thin_pack)
@ -125,8 +126,20 @@ static int pack_objects(int fd, struct ref *refs, struct sha1_array *extra, stru
po.out = -1;
}
if (finish_command(&po))
rc = finish_command(&po);
if (rc) {
/*
* For a normal non-zero exit, we assume pack-objects wrote
* something useful to stderr. For death by signal, though,
* we should mention it to the user. The exception is SIGPIPE
* (141), because that's a normal occurence if the remote end
* hangs up (and we'll report that by trying to read the unpack
* status).
*/
if (rc > 128 && rc != 141)
error("pack-objects died of signal %d", rc - 128);
return -1;
}
return 0;
}