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credential-cache: check for windows specific errors 

Connect and reset errors aren't what will be expected by POSIX but
are instead compatible with the ones used by WinSock.

To avoid any possibility of confusion with other systems, checks
for disconnection and availability had been abstracted into helper
functions that are platform specific.

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Carlo Marcelo Arenas Belón 2021-09-14 00:25:59 -07:00 committed by Junio C Hamano
parent 0fdcfa2f9f
commit 245670cd46
1 changed files with 28 additions and 2 deletions
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30
builtin/credential-cache.c
View File

@ -11,6 +11,32 @@
#define FLAG_SPAWN 0x1
#define FLAG_RELAY 0x2

#ifdef GIT_WINDOWS_NATIVE

static int connection_closed(int error)
{
return (error == EINVAL);
}

static int connection_fatally_broken(int error)
{
return (error != ENOENT) && (error != ENETDOWN);
}

#else

static int connection_closed(int error)
{
return (error == ECONNRESET);
}

static int connection_fatally_broken(int error)
{
return (error != ENOENT) && (error != ECONNREFUSED);
}

#endif

static int send_request(const char *socket, const struct strbuf *out)
{
int got_data = 0;
@ -28,7 +54,7 @@ static int send_request(const char *socket, const struct strbuf *out)
int r;

r = read_in_full(fd, in, sizeof(in));
if (r == 0 || (r < 0 && errno == ECONNRESET))
if (r == 0 || (r < 0 && connection_closed(errno)))
break;
if (r < 0)
die_errno("read error from cache daemon");
@ -75,7 +101,7 @@ static void do_cache(const char *socket, const char *action, int timeout,
}

if (send_request(socket, &buf) < 0) {
if (errno != ENOENT && errno != ECONNREFUSED)
if (connection_fatally_broken(errno))
die_errno("unable to connect to cache daemon");
if (flags & FLAG_SPAWN) {
spawn_daemon(socket);