#include "udev_selinux.h"
static int debug_trace;
-static int verbose;
+static int debug;
static struct udev_rules rules;
static int udevd_sock = -1;
if (priority > udev_log_priority)
return;
- if (verbose) {
+ va_start(args, format);
+ if (debug) {
printf("[%d] ", (int) getpid());
- va_start(args, format);
vprintf(format, args);
- va_end(args);
- printf("\n");
- } else {
- va_start(args, format);
+ } else
vsyslog(priority, format, args);
- va_end(args);
- }
+ va_end(args);
}
#endif
sigaction(SIGHUP, &act, NULL);
/* trigger timeout to prevent hanging processes */
- alarm(UDEV_ALARM_TIMEOUT);
+ alarm(UDEV_EVENT_TIMEOUT);
/* reconstruct event environment from message */
for (i = 0; msg->envp[i]; i++)
retval = udev_device_event(&rules, udev);
+ /* rules may change/disable the timeout */
+ if (udev->event_timeout >= 0)
+ alarm(udev->event_timeout);
+
/* run programs collected by RUN-key*/
if (retval == 0 && !udev->ignore_device && udev_run)
retval = udev_rules_run(udev);
delete_path(filename_failed);
create_path(filename);
+ selinux_setfscreatecon(filename, NULL, S_IFLNK);
symlink(msg->devpath, filename);
+ selinux_resetfscreatecon();
break;
case EVENT_FINISHED:
if (msg->devpath_old != NULL) {
path_encode(&filename_failed_old[start], sizeof(filename) - start);
if (rename(filename_failed_old, filename_failed) == 0)
- info("renamed devpath, moved failed state of '%s' to %s'",
+ info("renamed devpath, moved failed state of '%s' to %s'\n",
msg->devpath_old, msg->devpath);
} else {
unlink(filename_failed);
setpriority(PRIO_PROCESS, 0, UDEV_PRIORITY);
retval = udev_event_process(msg);
- info("seq %llu finished with %i", msg->seqnum, retval);
+ info("seq %llu finished with %i\n", msg->seqnum, retval);
logging_close();
if (retval)
exit(1);
exit(0);
case -1:
- err("fork of child failed: %s", strerror(errno));
+ err("fork of child failed: %s\n", strerror(errno));
msg_queue_delete(msg);
break;
default:
/* get SIGCHLD in main loop */
- info("seq %llu forked, pid [%d], '%s' '%s', %ld seconds old",
+ info("seq %llu forked, pid [%d], '%s' '%s', %ld seconds old\n",
msg->seqnum, pid, msg->action, msg->subsystem, time(NULL) - msg->queue_time);
msg->pid = pid;
}
msg->queue_time = time(NULL);
+ export_event_state(msg, EVENT_QUEUED);
+ info("seq %llu queued, '%s' '%s'\n", msg->seqnum, msg->action, msg->subsystem);
+
strlcpy(filename, udev_root, sizeof(filename));
strlcat(filename, "/" EVENT_SEQNUM, sizeof(filename));
fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0644);
close(fd);
}
- export_event_state(msg, EVENT_QUEUED);
- info("seq %llu queued, '%s' '%s'", msg->seqnum, msg->action, msg->subsystem);
-
/* run one event after the other in debug mode */
if (debug_trace) {
list_add_tail(&msg->node, &running_list);
/* check identical, parent, or child device event */
if (compare_devpath(loop_msg->devpath, msg->devpath) != 0) {
- dbg("%llu, device event still pending %llu (%s)",
+ dbg("%llu, device event still pending %llu (%s)\n",
msg->seqnum, loop_msg->seqnum, loop_msg->devpath);
return 3;
}
+ /* check for our major:minor number */
+ if (msg->devt && loop_msg->devt == msg->devt &&
+ strcmp(msg->subsystem, loop_msg->subsystem) == 0) {
+ dbg("%llu, device event still pending %llu (%d:%d)\n", msg->seqnum,
+ loop_msg->seqnum, major(loop_msg->devt), minor(loop_msg->devt));
+ return 4;
+ }
+
/* check physical device event (special case of parent) */
if (msg->physdevpath && msg->action && strcmp(msg->action, "add") == 0)
if (compare_devpath(loop_msg->devpath, msg->physdevpath) != 0) {
- dbg("%llu, physical device event still pending %llu (%s)",
+ dbg("%llu, physical device event still pending %llu (%s)\n",
msg->seqnum, loop_msg->seqnum, loop_msg->devpath);
- return 4;
+ return 5;
}
}
/* check run queue for still running events */
list_for_each_entry(loop_msg, &running_list, node) {
if (limit && childs_count++ > limit) {
- dbg("%llu, maximum number (%i) of childs reached", msg->seqnum, childs_count);
+ dbg("%llu, maximum number (%i) of childs reached\n", msg->seqnum, childs_count);
return 1;
}
/* check identical, parent, or child device event */
if (compare_devpath(loop_msg->devpath, msg->devpath) != 0) {
- dbg("%llu, device event still running %llu (%s)",
+ dbg("%llu, device event still running %llu (%s)\n",
msg->seqnum, loop_msg->seqnum, loop_msg->devpath);
return 3;
}
+ /* check for our major:minor number */
+ if (msg->devt && loop_msg->devt == msg->devt &&
+ strcmp(msg->subsystem, loop_msg->subsystem) == 0) {
+ dbg("%llu, device event still running %llu (%d:%d)\n", msg->seqnum,
+ loop_msg->seqnum, major(loop_msg->devt), minor(loop_msg->devt));
+ return 4;
+ }
+
/* check physical device event (special case of parent) */
if (msg->physdevpath && msg->action && strcmp(msg->action, "add") == 0)
if (compare_devpath(loop_msg->devpath, msg->physdevpath) != 0) {
- dbg("%llu, physical device event still running %llu (%s)",
+ dbg("%llu, physical device event still running %llu (%s)\n",
msg->seqnum, loop_msg->seqnum, loop_msg->devpath);
- return 4;
+ return 5;
}
}
return 0;
return;
running = running_processes();
- dbg("%d processes runnning on system", running);
+ dbg("%d processes runnning on system\n", running);
if (running < 0)
running = max_childs_running;
/* check running processes in our session and possibly throttle */
if (running >= max_childs_running) {
running = running_processes_in_session(sid, max_childs_running+10);
- dbg("at least %d processes running in session", running);
+ dbg("at least %d processes running in session\n", running);
if (running >= max_childs_running) {
- dbg("delay seq %llu, too many processes already running", loop_msg->seqnum);
+ dbg("delay seq %llu, too many processes already running\n", loop_msg->seqnum);
return;
}
}
/* serialize and wait for parent or child events */
if (devpath_busy(loop_msg, max_childs) != 0) {
- dbg("delay seq %llu (%s)", loop_msg->seqnum, loop_msg->devpath);
+ dbg("delay seq %llu (%s)\n", loop_msg->seqnum, loop_msg->devpath);
continue;
}
list_move_tail(&loop_msg->node, &running_list);
udev_event_run(loop_msg);
running++;
- dbg("moved seq %llu to running list", loop_msg->seqnum);
+ dbg("moved seq %llu to running list\n", loop_msg->seqnum);
}
}
keylen = strlen(key);
msg->envp[i] = key;
bufpos += keylen + 1;
- dbg("add '%s' to msg.envp[%i]", msg->envp[i], i);
+ dbg("add '%s' to msg.envp[%i]\n", msg->envp[i], i);
/* remember some keys for further processing */
if (strncmp(key, "ACTION=", 7) == 0)
msg->envp[i] = NULL;
if (msg->devpath == NULL || msg->action == NULL) {
- info("DEVPATH or ACTION missing, ignore message");
+ info("DEVPATH or ACTION missing, ignore message\n");
free(msg);
return NULL;
}
size = recvmsg(udevd_sock, &smsg, 0);
if (size < 0) {
if (errno != EINTR)
- err("unable to receive user udevd message: %s", strerror(errno));
+ err("unable to receive user udevd message: %s\n", strerror(errno));
return;
}
cmsg = CMSG_FIRSTHDR(&smsg);
cred = (struct ucred *) CMSG_DATA(cmsg);
if (cmsg == NULL || cmsg->cmsg_type != SCM_CREDENTIALS) {
- err("no sender credentials received, message ignored");
+ err("no sender credentials received, message ignored\n");
return;
}
if (cred->uid != 0) {
- err("sender uid=%i, message ignored", cred->uid);
+ err("sender uid=%i, message ignored\n", cred->uid);
return;
}
if (strncmp(ctrl_msg.magic, UDEVD_CTRL_MAGIC, sizeof(UDEVD_CTRL_MAGIC)) != 0 ) {
- err("message magic '%s' doesn't match, ignore it", ctrl_msg.magic);
+ err("message magic '%s' doesn't match, ignore it\n", ctrl_msg.magic);
return;
}
case UDEVD_CTRL_ENV:
pos = strchr(ctrl_msg.buf, '=');
if (pos == NULL) {
- err("wrong key format '%s'", ctrl_msg.buf);
+ err("wrong key format '%s'\n", ctrl_msg.buf);
break;
}
pos[0] = '\0';
if (pos[1] == '\0') {
- info("udevd message (ENV) received, unset '%s'", ctrl_msg.buf);
+ info("udevd message (ENV) received, unset '%s'\n", ctrl_msg.buf);
unsetenv(ctrl_msg.buf);
} else {
- info("udevd message (ENV) received, set '%s=%s'", ctrl_msg.buf, &pos[1]);
+ info("udevd message (ENV) received, set '%s=%s'\n", ctrl_msg.buf, &pos[1]);
setenv(ctrl_msg.buf, &pos[1], 1);
}
break;
case UDEVD_CTRL_STOP_EXEC_QUEUE:
- info("udevd message (STOP_EXEC_QUEUE) received");
+ info("udevd message (STOP_EXEC_QUEUE) received\n");
stop_exec_q = 1;
break;
case UDEVD_CTRL_START_EXEC_QUEUE:
- info("udevd message (START_EXEC_QUEUE) received");
+ info("udevd message (START_EXEC_QUEUE) received\n");
stop_exec_q = 0;
msg_queue_manager();
break;
case UDEVD_CTRL_SET_LOG_LEVEL:
intval = (int *) ctrl_msg.buf;
- info("udevd message (SET_LOG_PRIORITY) received, udev_log_priority=%i", *intval);
+ info("udevd message (SET_LOG_PRIORITY) received, udev_log_priority=%i\n", *intval);
udev_log_priority = *intval;
sprintf(udev_log, "UDEV_LOG=%i", udev_log_priority);
putenv(udev_log);
break;
case UDEVD_CTRL_SET_MAX_CHILDS:
intval = (int *) ctrl_msg.buf;
- info("udevd message (UDEVD_SET_MAX_CHILDS) received, max_childs=%i", *intval);
+ info("udevd message (UDEVD_SET_MAX_CHILDS) received, max_childs=%i\n", *intval);
max_childs = *intval;
break;
case UDEVD_CTRL_SET_MAX_CHILDS_RUNNING:
intval = (int *) ctrl_msg.buf;
- info("udevd message (UDEVD_SET_MAX_CHILDS_RUNNING) received, max_childs=%i", *intval);
+ info("udevd message (UDEVD_SET_MAX_CHILDS_RUNNING) received, max_childs=%i\n", *intval);
max_childs_running = *intval;
break;
case UDEVD_CTRL_RELOAD_RULES:
- info("udevd message (RELOAD_RULES) received");
+ info("udevd message (RELOAD_RULES) received\n");
reload_config = 1;
break;
default:
- err("unknown control message type");
+ err("unknown control message type\n");
}
}
size = recv(uevent_netlink_sock, &buffer, sizeof(buffer), 0);
if (size < 0) {
if (errno != EINTR)
- err("unable to receive kernel netlink message: %s", strerror(errno));
+ err("unable to receive kernel netlink message: %s\n", strerror(errno));
return NULL;
}
if ((size_t)size > sizeof(buffer)-1)
size = sizeof(buffer)-1;
buffer[size] = '\0';
- dbg("uevent_size=%zi", size);
+ dbg("uevent_size=%zi\n", size);
/* start of event payload */
bufpos = strlen(buffer)+1;
/* validate message */
pos = strchr(buffer, '@');
if (pos == NULL) {
- err("invalid uevent '%s'", buffer);
+ err("invalid uevent '%s'\n", buffer);
free(msg);
return NULL;
}
pos[0] = '\0';
if (msg->action == NULL) {
- info("no ACTION in payload found, skip event '%s'", buffer);
+ info("no ACTION in payload found, skip event '%s'\n", buffer);
free(msg);
return NULL;
}
if (strcmp(msg->action, buffer) != 0) {
- err("ACTION in payload does not match uevent, skip event '%s'", buffer);
+ err("ACTION in payload does not match uevent, skip event '%s'\n", buffer);
free(msg);
return NULL;
}
list_for_each_entry(msg, &running_list, node) {
if (msg->pid == pid) {
- info("seq %llu, pid [%d] exit with %i, %ld seconds old", msg->seqnum, msg->pid,
+ info("seq %llu, pid [%d] exit with %i, %ld seconds old\n", msg->seqnum, msg->pid,
exitstatus, time(NULL) - msg->queue_time);
msg->exitstatus = exitstatus;
msg_queue_delete(msg);
saddr.sun_family = AF_LOCAL;
/* use abstract namespace for socket path */
strcpy(&saddr.sun_path[1], UDEVD_CTRL_SOCK_PATH);
- addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path+1) + 1;
+ addrlen = offsetof(struct sockaddr_un, sun_path) + 1 + strlen(&saddr.sun_path[1]);
udevd_sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
if (udevd_sock == -1) {
- err("error getting socket: %s", strerror(errno));
+ err("error getting socket: %s\n", strerror(errno));
return -1;
}
/* the bind takes care of ensuring only one copy running */
retval = bind(udevd_sock, (struct sockaddr *) &saddr, addrlen);
if (retval < 0) {
- err("bind failed: %s", strerror(errno));
+ err("bind failed: %s\n", strerror(errno));
close(udevd_sock);
udevd_sock = -1;
return -1;
uevent_netlink_sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT);
if (uevent_netlink_sock == -1) {
- err("error getting socket: %s", strerror(errno));
+ err("error getting socket: %s\n", strerror(errno));
return -1;
}
retval = bind(uevent_netlink_sock, (struct sockaddr *) &snl, sizeof(struct sockaddr_nl));
if (retval < 0) {
- err("bind failed: %s", strerror(errno));
+ err("bind failed: %s\n", strerror(errno));
close(uevent_netlink_sock);
uevent_netlink_sock = -1;
return -1;
static const struct option options[] = {
{ "daemon", 0, NULL, 'd' },
{ "debug-trace", 0, NULL, 't' },
- { "verbose", 0, NULL, 'v' },
+ { "debug", 0, NULL, 'D' },
{ "help", 0, NULL, 'h' },
{ "version", 0, NULL, 'V' },
{}
logging_init("udevd");
udev_config_init();
selinux_init();
- dbg("version %s", UDEV_VERSION);
+ dbg("version %s\n", UDEV_VERSION);
while (1) {
- option = getopt_long(argc, argv, "dtvhV", options, NULL);
+ option = getopt_long(argc, argv, "dDthV", options, NULL);
if (option == -1)
break;
case 't':
debug_trace = 1;
break;
- case 'v':
- verbose = 1;
+ case 'D':
+ debug = 1;
if (udev_log_priority < LOG_INFO)
udev_log_priority = LOG_INFO;
break;
case 'h':
- printf("Usage: udevd [--help] [--daemon] [--debug-trace] [--verbose] [--version]\n");
+ printf("Usage: udevd [--help] [--daemon] [--debug-trace] [--debug] [--version]\n");
goto exit;
case 'V':
printf("%s\n", UDEV_VERSION);
if (getuid() != 0) {
fprintf(stderr, "root privileges required\n");
- err("root privileges required");
+ err("root privileges required\n");
goto exit;
}
fd = open("/dev/null", O_RDWR);
if (fd < 0) {
fprintf(stderr, "cannot open /dev/null\n");
- err("cannot open /dev/null");
+ err("cannot open /dev/null\n");
}
if (fd > STDIN_FILENO)
dup2(fd, STDIN_FILENO);
if (init_udevd_socket() < 0) {
if (errno == EADDRINUSE) {
fprintf(stderr, "another udev daemon already running\n");
- err("another udev daemon already running");
+ err("another udev daemon already running\n");
rc = 1;
} else {
fprintf(stderr, "error initializing udevd socket\n");
- err("error initializing udevd socket");
+ err("error initializing udevd socket\n");
rc = 2;
}
goto exit;
if (init_uevent_netlink_sock() < 0) {
fprintf(stderr, "error initializing netlink socket\n");
- err("error initializing netlink socket");
+ err("error initializing netlink socket\n");
rc = 3;
goto exit;
}
/* setup signal handler pipe */
retval = pipe(signal_pipe);
if (retval < 0) {
- err("error getting pipes: %s", strerror(errno));
+ err("error getting pipes: %s\n", strerror(errno));
goto exit;
}
retval = fcntl(signal_pipe[READ_END], F_GETFL, 0);
if (retval < 0) {
- err("error fcntl on read pipe: %s", strerror(errno));
+ err("error fcntl on read pipe: %s\n", strerror(errno));
goto exit;
}
retval = fcntl(signal_pipe[READ_END], F_SETFL, retval | O_NONBLOCK);
if (retval < 0) {
- err("error fcntl on read pipe: %s", strerror(errno));
+ err("error fcntl on read pipe: %s\n", strerror(errno));
goto exit;
}
retval = fcntl(signal_pipe[WRITE_END], F_GETFL, 0);
if (retval < 0) {
- err("error fcntl on write pipe: %s", strerror(errno));
+ err("error fcntl on write pipe: %s\n", strerror(errno));
goto exit;
}
retval = fcntl(signal_pipe[WRITE_END], F_SETFL, retval | O_NONBLOCK);
if (retval < 0) {
- err("error fcntl on write pipe: %s", strerror(errno));
+ err("error fcntl on write pipe: %s\n", strerror(errno));
goto exit;
}
pid = fork();
switch (pid) {
case 0:
- dbg("daemonized fork running");
+ dbg("daemonized fork running\n");
break;
case -1:
- err("fork of daemon failed: %s", strerror(errno));
+ err("fork of daemon failed: %s\n", strerror(errno));
rc = 4;
goto exit;
default:
- dbg("child [%u] running, parent exits", pid);
+ dbg("child [%u] running, parent exits\n", pid);
rc = 0;
goto exit;
}
}
/* redirect std{out,err} fd's */
- if (!verbose)
+ if (!debug)
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
if (fd > STDERR_FILENO)
/* become session leader */
sid = setsid();
- dbg("our session is %d", sid);
+ dbg("our session is %d\n", sid);
/* OOM_DISABLE == -17 */
fd = open("/proc/self/oom_adj", O_RDWR);
if (fd < 0)
- err("error disabling OOM: %s", strerror(errno));
+ err("error disabling OOM: %s\n", strerror(errno));
else {
write(fd, "-17", 3);
close(fd);
}
+ fd = open("/dev/kmsg", O_WRONLY);
+ if (fd > 0) {
+ const char *str = "<6>udevd version " UDEV_VERSION " started\n";
+
+ write(fd, str, strlen(str));
+ close(fd);
+ }
+
/* set signal handlers */
memset(&act, 0x00, sizeof(struct sigaction));
act.sa_handler = (void (*)(int)) sig_handler;
strlcat(filename, "/"RULES_DYN_DIR, sizeof(filename));
inotify_add_watch(inotify_fd, filename, IN_CREATE | IN_DELETE | IN_MOVE | IN_CLOSE_WRITE);
} else if (errno == ENOSYS)
- err("the kernel does not support inotify, udevd can't monitor rules file changes");
+ err("the kernel does not support inotify, udevd can't monitor rules file changes\n");
else
- err("inotify_init failed: %s", strerror(errno));
+ err("inotify_init failed: %s\n", strerror(errno));
/* maximum limit of forked childs */
value = getenv("UDEVD_MAX_CHILDS");
else
max_childs = UDEVD_MAX_CHILDS;
}
- info("initialize max_childs to %u", max_childs);
+ info("initialize max_childs to %u\n", max_childs);
/* start to throttle forking if maximum number of _running_ childs is reached */
value = getenv("UDEVD_MAX_CHILDS_RUNNING");
else
max_childs_running = UDEVD_MAX_CHILDS_RUNNING;
}
- info("initialize max_childs_running to %u", max_childs_running);
+ info("initialize max_childs_running to %u\n", max_childs_running);
/* clear environment for forked event processes */
clearenv();
fdcount = select(maxfd+1, &readfds, NULL, NULL, NULL);
if (fdcount < 0) {
if (errno != EINTR)
- err("error in select: %s", strerror(errno));
+ err("error in select: %s\n", strerror(errno));
continue;
}
reload_config = 1;
buf = malloc(nbytes);
if (buf == NULL) {
- err("error getting buffer for inotify, disable watching");
+ err("error getting buffer for inotify, disable watching\n");
close(inotify_fd);
inotify_fd = -1;
}
~ianmdlvl / elogind.git / blobdiff