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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 "format-util.h"
#include "path-util.h"
#include "string-util.h"
#include "strv.h"
#include "strxcpyx.h"
#include "terminal-util.h"
#include "udev-builtin.h"
#include "udev-event.h"
#include "udev-format.h"
#include "udevadm-util.h"
#include "udevadm.h"
#include "user-util.h"
static sd_device_action_t arg_action = SD_DEVICE_ADD;
static ResolveNameTiming arg_resolve_name_timing = RESOLVE_NAME_EARLY;
static const char *arg_syspath = NULL;
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 r, c;
while ((c = getopt_long(argc, argv, "a:N:Vh", options, NULL)) >= 0)
switch (c) {
case 'a':
r = parse_device_action(optarg, &arg_action);
if (r < 0)
return log_error_errno(r, "Invalid action '%s'", optarg);
if (r == 0)
return 0;
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();
}
arg_syspath = argv[optind];
if (!arg_syspath)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "syspath parameter missing.");
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;
sigset_t mask, sigmask_orig;
int r;
log_setup();
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 = find_device_with_action(arg_syspath, arg_action, &dev);
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, NULL, EVENT_UDEVADM_TEST);
assert_se(sigfillset(&mask) >= 0);
assert_se(sigprocmask(SIG_SETMASK, &mask, &sigmask_orig) >= 0);
udev_event_execute_rules(event, rules);
printf("%sProperties:%s\n", ansi_highlight(), ansi_normal());
FOREACH_DEVICE_PROPERTY(dev, key, value)
printf(" %s=%s\n", key, value);
if (sd_device_get_tag_first(dev)) {
printf("%sTags:%s\n", ansi_highlight(), ansi_normal());
FOREACH_DEVICE_TAG(dev, tag)
printf(" %s\n", tag);
}
if (sd_device_get_devnum(dev, NULL) >= 0) {
if (sd_device_get_devlink_first(dev)) {
int prio;
device_get_devlink_priority(dev, &prio);
printf("%sDevice node symlinks:%s (priority=%i)\n", ansi_highlight(), ansi_normal(), prio);
FOREACH_DEVICE_DEVLINK(dev, devlink)
printf(" %s\n", devlink);
}
printf("%sInotify watch:%s\n %s\n", ansi_highlight(), ansi_normal(), enabled_disabled(event->inotify_watch));
uid_t uid = event->uid;
if (!uid_is_valid(uid))
(void) device_get_devnode_uid(dev, &uid);
if (uid_is_valid(uid)) {
_cleanup_free_ char *user = uid_to_name(uid);
printf("%sDevice node owner:%s\n %s (uid="UID_FMT")\n", ansi_highlight(), ansi_normal(), strna(user), uid);
}
gid_t gid = event->gid;
if (!gid_is_valid(uid))
(void) device_get_devnode_gid(dev, &gid);
if (gid_is_valid(gid)) {
_cleanup_free_ char *group = gid_to_name(gid);
printf("%sDevice node group:%s\n %s (gid="GID_FMT")\n", ansi_highlight(), ansi_normal(), strna(group), gid);
}
mode_t mode = event->mode;
if (mode == MODE_INVALID)
(void) device_get_devnode_mode(dev, &mode);
if (mode != MODE_INVALID)
printf("%sDevice node permission:%s\n %04o\n", ansi_highlight(), ansi_normal(), mode);
if (!ordered_hashmap_isempty(event->seclabel_list)) {
const char *name, *label;
printf("%sDevice node security label:%s\n", ansi_highlight(), ansi_normal());
ORDERED_HASHMAP_FOREACH_KEY(label, name, event->seclabel_list)
printf(" %s : %s\n", name, label);
}
}
if (sd_device_get_ifindex(dev, NULL) >= 0) {
if (!isempty(event->name))
printf("%sNetwork interface name:%s\n %s\n", ansi_highlight(), ansi_normal(), event->name);
if (!strv_isempty(event->altnames)) {
bool space = true;
printf("%sAlternative interface names:%s", ansi_highlight(), ansi_normal());
fputstrv(stdout, event->altnames, "\n ", &space);
puts("");
}
}
if (!ordered_hashmap_isempty(event->run_list)) {
void *val;
const char *command;
printf("%sQueued commands:%s\n", ansi_highlight(), ansi_normal());
ORDERED_HASHMAP_FOREACH_KEY(val, command, event->run_list) {
UdevBuiltinCommand builtin_cmd = PTR_TO_UDEV_BUILTIN_CMD(val);
if (builtin_cmd != _UDEV_BUILTIN_INVALID)
printf(" RUN{builtin} : %s\n", command);
else
printf(" RUN{program} : %s\n", command);
}
}
r = 0;
out:
udev_builtin_exit();
return r;
}
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