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s3/lib: add option "serverid watch:debug script"

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This takes just PID and NODE:PID on a cluster.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15624

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
(cherry picked from commit 7add7dbf1aee13b4d9ab70d1a5312c8ff30d9e00)
This commit is contained in:
Ralph Boehme 2024-04-25 15:17:08 +02:00 committed by Jule Anger
parent b365e1068e
commit b5388c25b8
1 changed files with 52 additions and 0 deletions
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52
source3/lib/server_id_watch.c
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@ -100,6 +100,7 @@ static void server_id_watch_waited(struct tevent_req *subreq)
if (timeval_compare(&state->warn, &now) == -1) {
double duration = timeval_elapsed2(&state->start, &now);
const char *cmd = NULL;
char proc_path[64] = { 0, };
char *kstack = NULL;
struct server_id_buf buf;
@ -108,6 +109,57 @@ static void server_id_watch_waited(struct tevent_req *subreq)
state->warn = tevent_timeval_add(&now, 10, 0);
cmd = lp_parm_const_string(GLOBAL_SECTION_SNUM,
"serverid watch",
"debug script",
NULL);
if (cmd != NULL) {
char *cmdstr = NULL;
char *output = NULL;
int fd;
/*
* Note in a cluster setup pid will be
* a NOTE:PID like '1:3978365'
*
* Without clustering it is just '3978365'
*/
cmdstr = talloc_asprintf(state, "%s %s", cmd, pid);
if (cmdstr == NULL) {
DBG_ERR("Process %s hanging for %f seconds?\n"
"talloc_asprintf failed\n",
pid, duration);
goto next;
}
become_root();
ret = smbrun(cmdstr, &fd, NULL);
unbecome_root();
if (ret != 0) {
DBG_ERR("Process %s hanging for %f seconds?\n"
"smbrun('%s') failed\n",
pid, duration, cmdstr);
TALLOC_FREE(cmdstr);
goto next;
}
output = fd_load(fd, NULL, 0, state);
close(fd);
if (output == NULL) {
DBG_ERR("Process %s hanging for %f seconds?\n"
"fd_load() of smbrun('%s') failed\n",
pid, duration, cmdstr);
TALLOC_FREE(cmdstr);
goto next;
}
DBG_ERR("Process %s hanging for %f seconds?\n"
"%s returned:\n%s",
pid, duration, cmdstr, output);
TALLOC_FREE(cmdstr);
TALLOC_FREE(output);
goto next;
}
if (!procid_is_local(&state->pid) || !sys_have_proc_fds()) {
DBG_ERR("Process %s hanging for %f seconds?\n",
pid, duration);