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lib: Simplify register_msg_pool_usage()

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We can do as much as we want in the filter. This gives us automatic
retry, we don't have to do the messaging_filtered_read_send() over and
over again

Bug: https://bugzilla.samba.org/show_bug.cgi?id=14281

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This commit is contained in:
Volker Lendecke 2020-02-11 21:26:18 +01:00 committed by Björn Baumbach
parent 4de1e3207b
commit 8a23031b7b
1 changed files with 19 additions and 38 deletions
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57
source3/lib/tallocmsg.c
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@ -25,6 +25,9 @@
static bool pool_usage_filter(struct messaging_rec *rec, void *private_data)
{
FILE *f = NULL;
int fd;
if (rec->msg_type != MSG_REQ_POOL_USAGE) {
return false;
}
@ -36,52 +39,31 @@ static bool pool_usage_filter(struct messaging_rec *rec, void *private_data)
return false;
}
return true;
}
static void msg_pool_usage_do(struct tevent_req *req)
{
struct messaging_context *msg_ctx = tevent_req_callback_data(
req, struct messaging_context);
struct messaging_rec *rec = NULL;
FILE *f = NULL;
int ret;
ret = messaging_filtered_read_recv(req, talloc_tos(), &rec);
TALLOC_FREE(req);
if (ret != 0) {
DBG_DEBUG("messaging_filtered_read_recv returned %s\n",
strerror(ret));
return;
fd = dup(rec->fds[0]);
if (fd == -1) {
DBG_DEBUG("dup(%"PRIi64") failed: %s\n",
rec->fds[0],
strerror(errno));
return false;
}
f = fdopen(rec->fds[0], "w");
f = fdopen(fd, "w");
if (f == NULL) {
close(rec->fds[0]);
TALLOC_FREE(rec);
DBG_DEBUG("fdopen failed: %s\n", strerror(errno));
return;
close(fd);
return false;
}
TALLOC_FREE(rec);
talloc_full_report_printf(NULL, f);
fclose(f);
f = NULL;
req = messaging_filtered_read_send(
msg_ctx,
messaging_tevent_context(msg_ctx),
msg_ctx,
pool_usage_filter,
NULL);
if (req == NULL) {
DBG_WARNING("messaging_filtered_read_send failed\n");
return;
}
tevent_req_set_callback(req, msg_pool_usage_do, msg_ctx);
/*
* Returning false, means messaging_dispatch_waiters()
* won't call messaging_filtered_read_done() and
* our messaging_filtered_read_send() stays alive
* and will get messages.
*/
return false;
}
/**
@ -101,6 +83,5 @@ void register_msg_pool_usage(struct messaging_context *msg_ctx)
DBG_WARNING("messaging_filtered_read_send failed\n");
return;
}
tevent_req_set_callback(req, msg_pool_usage_do, msg_ctx);
DEBUG(2, ("Registered MSG_REQ_POOL_USAGE\n"));
}