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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright © 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
*/
#include <errno.h>
#include <getopt.h>
#include <signal.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/signalfd.h>
#include <unistd.h>
#include "sd-device.h"
#include "device-private.h"
#include "device-util.h"
#include "path-util.h"
#include "string-util.h"
#include "strxcpyx.h"
#include "udev-builtin.h"
#include "udev-event.h"
#include "udevadm.h"
static const char *arg_action = "add";
static ResolveNameTiming arg_resolve_name_timing = RESOLVE_NAME_EARLY;
static char arg_syspath[UDEV_PATH_SIZE] = {};
static int help(void) {
printf("%s test [OPTIONS] DEVPATH\n\n"
"Test an event run.\n\n"
" -h --help Show this help\n"
" -V --version Show package version\n"
" -a --action=ACTION|help Set action string\n"
" -N --resolve-names=early|late|never When to resolve names\n",
program_invocation_short_name);
return 0;
}
static int parse_argv(int argc, char *argv[]) {
static const struct option options[] = {
{ "action", required_argument, NULL, 'a' },
{ "resolve-names", required_argument, NULL, 'N' },
{ "version", no_argument, NULL, 'V' },
{ "help", no_argument, NULL, 'h' },
{}
};
int c;
while ((c = getopt_long(argc, argv, "a:N:Vh", options, NULL)) >= 0)
switch (c) {
case 'a': {
sd_device_action_t a;
if (streq(optarg, "help")) {
dump_device_action_table();
return 0;
}
a = device_action_from_string(optarg);
if (a < 0)
return log_error_errno(a, "Invalid action '%s'", optarg);
arg_action = device_action_to_string(a);
break;
}
case 'N':
arg_resolve_name_timing = resolve_name_timing_from_string(optarg);
if (arg_resolve_name_timing < 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"--resolve-names= must be early, late or never");
break;
case 'V':
return print_version();
case 'h':
return help();
case '?':
return -EINVAL;
default:
assert_not_reached("Unknown option");
}
if (!argv[optind])
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"syspath parameter missing.");
/* add /sys if needed */
if (!path_startswith(argv[optind], "/sys"))
strscpyl(arg_syspath, sizeof(arg_syspath), "/sys", argv[optind], NULL);
else
strscpy(arg_syspath, sizeof(arg_syspath), argv[optind]);
return 1;
}
int test_main(int argc, char *argv[], void *userdata) {
_cleanup_(udev_rules_freep) UdevRules *rules = NULL;
_cleanup_(udev_event_freep) UdevEvent *event = NULL;
_cleanup_(sd_device_unrefp) sd_device *dev = NULL;
const char *cmd, *key, *value;
sigset_t mask, sigmask_orig;
void *val;
int r;
log_set_max_level(LOG_DEBUG);
r = parse_argv(argc, argv);
if (r <= 0)
return r;
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");
assert_se(sigprocmask(SIG_SETMASK, NULL, &sigmask_orig) >= 0);
udev_builtin_init();
r = udev_rules_load(&rules, arg_resolve_name_timing);
if (r < 0) {
log_error_errno(r, "Failed to read udev rules: %m");
goto out;
}
r = device_new_from_synthetic_event(&dev, arg_syspath, arg_action);
if (r < 0) {
log_error_errno(r, "Failed to open device '%s': %m", arg_syspath);
goto out;
}
/* don't read info from the db */
device_seal(dev);
event = udev_event_new(dev, 0, NULL, LOG_DEBUG);
assert_se(sigfillset(&mask) >= 0);
assert_se(sigprocmask(SIG_SETMASK, &mask, &sigmask_orig) >= 0);
udev_event_execute_rules(event, -1, 60 * USEC_PER_SEC, SIGKILL, NULL, rules);
FOREACH_DEVICE_PROPERTY(dev, key, value)
printf("%s=%s\n", key, value);
ORDERED_HASHMAP_FOREACH_KEY(val, cmd, event->run_list) {
char program[UDEV_PATH_SIZE];
(void) udev_event_apply_format(event, cmd, program, sizeof(program), false);
printf("run: '%s'\n", program);
}
r = 0;
out:
udev_builtin_exit();
return r;
}
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