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Fix bunch of fd leaks in http-fetch 

The current http-fetch is rather careless about fd leakage, causing
problems while fetching large repositories. This patch does not reserve
exhaustiveness, but I covered everything I spotted. I also left some
safeguards in place in case I missed something, so that we get to know,
sooner or later.

Reported by Becky Bruce <becky.bruce@freescale.com>.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Petr Baudis 2005-11-12 00:55:16 +01:00 committed by Junio C Hamano
parent bce8230d5d
commit 313c4714c5
1 changed files with 14 additions and 2 deletions
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16
http-fetch.c
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@ -425,6 +425,8 @@ static void start_request(struct transfer_request *request)
rename(request->tmpfile, prevfile);
unlink(request->tmpfile);
if (request->local != -1)
error("fd leakage in start: %d", request->local);
request->local = open(request->tmpfile,
O_WRONLY | O_CREAT | O_EXCL, 0666);
/* This could have failed due to the "lazy directory creation";
@ -523,7 +525,7 @@ static void start_request(struct transfer_request *request)
/* Try to get the request started, abort the request on error */
if (!start_active_slot(slot)) {
request->state = ABORTED;
close(request->local);
close(request->local); request->local = -1;
free(request->url);
return;
}
@ -537,7 +539,7 @@ static void finish_request(struct transfer_request *request)
struct stat st;
fchmod(request->local, 0444);
close(request->local);
close(request->local); request->local = -1;
if (request->http_code == 416) {
fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n");
@ -569,6 +571,8 @@ static void release_request(struct transfer_request *request)
{
struct transfer_request *entry = request_queue_head;
if (request->local != -1)
error("fd leakage in release: %d", request->local);
if (request == request_queue_head) {
request_queue_head = request->next;
} else {
@ -631,6 +635,8 @@ static void process_curl_messages(void)
if (request->repo->next != NULL) {
request->repo =
request->repo->next;
close(request->local);
request->local = -1;
start_request(request);
} else {
finish_request(request);
@ -763,6 +769,7 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
curl_errorstr);
}
} else {
fclose(indexfile);
return error("Unable to start request");
}
@ -1083,6 +1090,7 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
curl_errorstr);
}
} else {
fclose(packfile);
return error("Unable to start request");
}
@ -1145,6 +1153,7 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
fetch_alternates(alt->base);
if (request->repo->next != NULL) {
request->repo = request->repo->next;
close(request->local); request->local = -1;
start_request(request);
}
} else {
@ -1153,6 +1162,9 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
}
#endif
}
if (request->local != -1) {
close(request->local); request->local = -1;
}
if (request->state == ABORTED) {
release_request(request);