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/*
* Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2004-2008 Kay Sievers <kay@vrfy.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <syslog.h>
#include <getopt.h>
#include <sys/signalfd.h>
#include "udev.h"
#include "udev-util.h"
static int adm_test(struct udev *udev, int argc, char *argv[]) {
int resolve_names = 1;
char filename[UTIL_PATH_SIZE];
const char *action = "add";
const char *syspath = NULL;
struct udev_list_entry *entry;
_cleanup_udev_rules_unref_ struct udev_rules *rules = NULL;
_cleanup_udev_device_unref_ struct udev_device *dev = NULL;
_cleanup_udev_event_unref_ struct udev_event *event = NULL;
sigset_t mask, sigmask_orig;
int rc = 0, c;
static const struct option options[] = {
{ "action", required_argument, NULL, 'a' },
{ "resolve-names", required_argument, NULL, 'N' },
{ "help", no_argument, NULL, 'h' },
{}
};
log_debug("version %s", VERSION);
while((c = getopt_long(argc, argv, "a:N:h", options, NULL)) >= 0)
switch (c) {
case 'a':
action = optarg;
break;
case 'N':
if (streq (optarg, "early")) {
resolve_names = 1;
} else if (streq (optarg, "late")) {
resolve_names = 0;
} else if (streq (optarg, "never")) {
resolve_names = -1;
} else {
fprintf(stderr, "resolve-names must be early, late or never\n");
log_error("resolve-names must be early, late or never");
exit(EXIT_FAILURE);
}
break;
case 'h':
printf("Usage: udevadm test OPTIONS <syspath>\n"
" -a,--action=ACTION set action string\n"
" -N,--resolve-names=early|late|never when to resolve names\n"
" -h,--help print this help string\n"
"\n");
exit(EXIT_SUCCESS);
case '?':
exit(EXIT_FAILURE);
default:
assert_not_reached("Unknown option");
}
syspath = argv[optind];
if (syspath == NULL) {
fprintf(stderr, "syspath parameter missing\n");
rc = 2;
goto out;
}
printf("This program is for debugging only, it does not run any program\n"
"specified by a RUN key. It may show incorrect results, because\n"
"some values may be different, or not available at a simulation run.\n"
"\n");
sigprocmask(SIG_SETMASK, NULL, &sigmask_orig);
udev_builtin_init(udev);
rules = udev_rules_new(udev, resolve_names);
if (rules == NULL) {
fprintf(stderr, "error reading rules\n");
rc = 3;
goto out;
}
/* add /sys if needed */
if (!startswith(syspath, "/sys"))
strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
else
strscpy(filename, sizeof(filename), syspath);
util_remove_trailing_chars(filename, '/');
dev = udev_device_new_from_syspath(udev, filename);
if (dev == NULL) {
fprintf(stderr, "unable to open device '%s'\n", filename);
rc = 4;
goto out;
}
/* skip reading of db, but read kernel parameters */
udev_device_set_info_loaded(dev);
udev_device_read_uevent_file(dev);
udev_device_set_action(dev, action);
event = udev_event_new(dev);
sigfillset(&mask);
sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);
event->fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
if (event->fd_signal < 0) {
fprintf(stderr, "error creating signalfd\n");
rc = 5;
goto out;
}
udev_event_execute_rules(event, 30 * USEC_PER_SEC, rules, &sigmask_orig);
udev_list_entry_foreach(entry, udev_device_get_properties_list_entry(dev))
printf("%s=%s\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry));
udev_list_entry_foreach(entry, udev_list_get_entry(&event->run_list)) {
char program[UTIL_PATH_SIZE];
udev_event_apply_format(event, udev_list_entry_get_name(entry), program, sizeof(program));
printf("run: '%s'\n", program);
}
out:
if (event != NULL && event->fd_signal >= 0)
close(event->fd_signal);
udev_builtin_exit(udev);
return rc;
}
const struct udevadm_cmd udevadm_test = {
.name = "test",
.cmd = adm_test,
.help = "test an event run",
.debug = true,
};
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