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connection: Clear correct args when clearing fds to -1

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commit 52609ddf79 was intended to
set fds to -1 in the arg list, however it failed to account for
version information at the start of signatures.

Most noticably, this broke mesa's create_prime_buffer by setting
width to -1 instead of the fd, as the width was the argument
following the fd, and the version was one byte long.

This should close https://bugs.kde.org/show_bug.cgi?id=389200

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Derek Foreman 2018-01-19 15:20:31 -06:00 • committed by Daniel Stone
parent 118aaec480
commit e5b52f673c
1 changed files with 5 additions and 2 deletions
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7
src/connection.c
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@ -533,10 +533,13 @@ wl_argument_from_va_list(const char *signature, union wl_argument *args,
static void
wl_closure_clear_fds(struct wl_closure *closure)
{
const char *signature = closure->message->signature;
struct argument_details arg;
int i;
for (i = 0; closure->message->signature[i]; i++) {
if (closure->message->signature[i] == 'h')
for (i = 0; i < closure->count; i++) {
signature = get_next_argument(signature, &arg);
if (arg.type == 'h')
closure->args[i].h = -1;
}
}