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udevd: add --debug-trace option

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This commit is contained in:
Kay Sievers 2006-09-08 11:30:00 +02:00
parent 9e8fe79b8e
commit c7c00276f6
3 changed files with 31 additions and 2 deletions
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5
udevd.8
View File

@ -14,7 +14,7 @@
udevd \- event managing daemon
.SH "SYNOPSIS"
.HP 6
\fBudevd\fR [\fB\-\-daemon\fR] [\fB\-\-verbose\fR] [\fB\-\-help\fR]
\fBudevd\fR [\fB\-\-daemon\fR] [\fB\-\-debug\-trace\fR] [\fB\-\-verbose\fR] [\fB\-\-help\fR]
.HP 20
\fBudevcontrol \fR\fB\fIcommand\fR\fR
.SH "DESCRIPTION"
@ -25,6 +25,9 @@ udevd listens to kernel uevents and passes the incoming events to udev. It ensur
\fB\-\-daemon\fR
Detach and run in the background.
.TP 3n
\fB\-\-debug\-trace\fR
Run all events completely serialized. This may be useful if udev triggers actions or loads kernel modules which cause problems and a slow but continiuous operation is needed, where no events are processed in parallel.
.TP 3n
\fB\-\-verbose\fR
Print log messages to stdout.
.TP 3n

18
udevd.c
View File

@ -45,6 +45,7 @@
#include "udevd.h"
#include "udev_selinux.h"
static int debug_trace;
static int verbose;
static struct udev_rules rules;
@ -307,6 +308,15 @@ static void msg_queue_insert(struct udevd_uevent_msg *msg)
export_event_state(msg, EVENT_QUEUED);
/* run one event after the other in debug mode */
if (debug_trace) {
list_add_tail(&msg->node, &running_list);
udev_event_run(msg);
waitpid(msg->pid, NULL, 0);
msg_queue_delete(msg);
return;
}
/* run all events with a timeout set immediately */
if (msg->timeout != 0) {
list_add_tail(&msg->node, &running_list);
@ -930,6 +940,7 @@ int main(int argc, char *argv[], char *envp[])
int option;
static const struct option options[] = {
{ "daemon", 0, NULL, 'd' },
{ "debug-trace", 0, NULL, 't' },
{ "verbose", 0, NULL, 'v' },
{ "help", 0, NULL, 'h' },
{}
@ -952,13 +963,16 @@ int main(int argc, char *argv[], char *envp[])
case 'd':
daemonize = 1;
break;
case 't':
debug_trace = 1;
break;
case 'v':
verbose = 1;
if (udev_log_priority < LOG_INFO)
udev_log_priority = LOG_INFO;
break;
case 'h':
printf("Usage: udevd [--help] [--daemon] [--verbose]\n");
printf("Usage: udevd [--help] [--daemon] [--debug-trace] [--verbose]\n");
goto exit;
default:
goto exit;
@ -1128,6 +1142,8 @@ int main(int argc, char *argv[], char *envp[])
/* export log_priority , as called programs may want to follow that setting */
sprintf(udev_log, "UDEV_LOG=%i", udev_log_priority);
putenv(udev_log);
if (debug_trace)
putenv("DEBUG=1");
maxfd = udevd_sock;
maxfd = UDEV_MAX(maxfd, uevent_netlink_sock);

10
udevd.xml
View File

@ -26,6 +26,7 @@
<cmdsynopsis>
<command>udevd</command>
<arg><option>--daemon</option></arg>
<arg><option>--debug-trace</option></arg>
<arg><option>--verbose</option></arg>
<arg><option>--help</option></arg>
</cmdsynopsis>
@ -48,6 +49,15 @@
<para>Detach and run in the background.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--debug-trace</option></term>
<listitem>
<para>Run all events completely serialized. This may be useful if udev triggers
actions or loads kernel modules which cause problems and a slow but continiuous
operation is needed, where no events are processed in parallel.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--verbose</option></term>
<listitem>