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protocol-native: don't remove all fds in clear

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When we consumed all the buffer data, don't clear all the fds but only
those that were already consumed in the message. It is possible that we
already have fds for the next message and we don't want to discard
those.

Fixes some intermittend memory map errors.
This commit is contained in:
Wim Taymans 2023-04-27 11:03:53 +02:00
parent 0ac465854b
commit 9eb1633b02
2 changed files with 13 additions and 6 deletions
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4
src/modules/module-protocol-native.c
View file

@ -199,8 +199,8 @@ static void debug_msg(const char *prefix, const struct pw_protocol_native_messag
{
struct spa_pod *pod;
pw_logt_debug(mod_topic_connection,
"%s: id:%d op:%d size:%d seq:%d", prefix,
msg->id, msg->opcode, msg->size, msg->seq);
"%s: id:%d op:%d size:%d seq:%d fds:%d", prefix,
msg->id, msg->opcode, msg->size, msg->seq, msg->n_fds);
if ((pod = get_first_pod_from_data(msg->data, msg->size, 0)) != NULL)
spa_debug_pod(0, NULL, pod);

15
src/modules/module-protocol-native/connection.c
View file

@ -271,16 +271,22 @@ too_many_fds:
static void clear_buffer(struct buffer *buf, bool fds)
{
uint32_t i;
pw_log_debug("clear fds:%d", fds);
if (fds) {
for (i = 0; i < buf->n_fds; i++) {
pw_log_debug("%p: close fd:%d", buf, buf->fds[i]);
close(buf->fds[i]);
}
}
buf->n_fds = 0;
buf->fds_offset = 0;
} else {
buf->n_fds -= SPA_MIN(buf->fds_offset, buf->n_fds);
memmove(buf->fds, &buf->fds[buf->fds_offset], buf->n_fds * sizeof(int));
buf->fds_offset = 0;
}
buf->buffer_size = 0;
buf->offset = 0;
buf->fds_offset = 0;
}
/** Prepare connection for calling from reentered context.
@ -711,8 +717,9 @@ pw_protocol_native_connection_end(struct pw_protocol_native_connection *conn,
if (mod_topic_connection->level >= SPA_LOG_LEVEL_DEBUG) {
pw_logt_debug(mod_topic_connection,
">>>>>>>>> out: id:%d op:%d size:%d seq:%d",
buf->msg.id, buf->msg.opcode, size, buf->msg.seq);
">>>>>>>>> out: id:%d op:%d size:%d seq:%d fds:%d",
buf->msg.id, buf->msg.opcode, size, buf->msg.seq,
buf->msg.n_fds);
spa_debug_pod(0, NULL, SPA_PTROFF(p, impl->hdr_size, struct spa_pod));
pw_logt_debug(mod_topic_connection,
">>>>>>>>> out: done");