diff options
| -rw-r--r-- | udevd.8 | 5 | ||||
| -rw-r--r-- | udevd.c | 18 | ||||
| -rw-r--r-- | udevd.xml | 10 |
3 files changed, 31 insertions, 2 deletions
@@ -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 @@ -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); @@ -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> @@ -49,6 +50,15 @@ </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> <para>Print log messages to stdout.</para> |