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/*
* Copyright (C) 2008 Kay Sievers <kayi.sievers@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 <stddef.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <dirent.h>
#include <fcntl.h>
#include <syslog.h>
#include <fnmatch.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include "udev.h"
static int verbose;
static int dry_run;
static void exec_list(struct udev_enumerate *udev_enumerate, const char *action)
{
struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
struct udev_list_entry *entry;
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(udev_enumerate)) {
char filename[UTIL_PATH_SIZE];
int fd;
if (verbose)
printf("%s\n", udev_list_entry_get_name(entry));
if (dry_run)
continue;
util_strlcpy(filename, udev_list_entry_get_name(entry), sizeof(filename));
util_strlcat(filename, "/uevent", sizeof(filename));
fd = open(filename, O_WRONLY);
if (fd < 0) {
dbg(udev, "error on opening %s: %m\n", filename);
continue;
}
if (write(fd, action, strlen(action)) < 0)
info(udev, "error writing '%s' to '%s': %m\n", action, filename);
close(fd);
}
}
static int enumerate_scan_failed(struct udev_enumerate *udev_enumerate)
{
struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
char base[UTIL_PATH_SIZE];
DIR *dir;
struct dirent *dent;
util_strlcpy(base, udev_get_dev_path(udev), sizeof(base));
util_strlcat(base, "/.udev/failed", sizeof(base));
dir = opendir(base);
if (dir != NULL) {
for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
char syspath[UTIL_PATH_SIZE];
size_t start;
struct udev_device *device;
if (dent->d_name[0] == '.')
continue;
start = util_strlcpy(syspath, udev_get_sys_path(udev), sizeof(syspath));
util_strlcat(syspath, dent->d_name, sizeof(syspath));
util_path_decode(&syspath[start]);
device = udev_device_new_from_syspath(udev, syspath);
if (device == NULL)
continue;
udev_enumerate_add_device(udev_enumerate, device);
udev_device_unref(device);
}
closedir(dir);
}
return 0;
}
int udevadm_trigger(struct udev *udev, int argc, char *argv[])
{
static const struct option options[] = {
{ "verbose", 0, NULL, 'v' },
{ "dry-run", 0, NULL, 'n' },
{ "type", 0, NULL, 't' },
{ "retry-failed", 0, NULL, 'F' },
{ "action", 1, NULL, 'c' },
{ "subsystem-match", 1, NULL, 's' },
{ "subsystem-nomatch", 1, NULL, 'S' },
{ "attr-match", 1, NULL, 'a' },
{ "attr-nomatch", 1, NULL, 'A' },
{ "help", 0, NULL, 'h' },
{}
};
enum {
TYPE_DEVICES,
TYPE_SUBSYSTEMS,
TYPE_FAILED,
} device_type = TYPE_DEVICES;
const char *action = "add";
struct udev_enumerate *udev_enumerate;
int rc = 0;
dbg(udev, "version %s\n", VERSION);
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL) {
rc = 1;
goto exit;
}
while (1) {
int option;
char attr[UTIL_PATH_SIZE];
char *val;
option = getopt_long(argc, argv, "vnFo:t:hce::s:S:a:A:", options, NULL);
if (option == -1)
break;
switch (option) {
case 'v':
verbose = 1;
break;
case 'n':
dry_run = 1;
break;
case 't':
if (strcmp(optarg, "devices") == 0) {
device_type = TYPE_DEVICES;
} else if (strcmp(optarg, "subsystems") == 0) {
device_type = TYPE_SUBSYSTEMS;
} else if (strcmp(optarg, "failed") == 0) {
device_type = TYPE_FAILED;
} else {
fprintf(stderr, "unknown type --type=%s\n", optarg);
err(udev, "unknown type --type=%s\n", optarg);
rc = 2;
goto exit;
}
break;
case 'F':
device_type = TYPE_FAILED;
break;
case 'c':
action = optarg;
break;
case 's':
udev_enumerate_add_match_subsystem(udev_enumerate, optarg);
break;
case 'S':
udev_enumerate_add_nomatch_subsystem(udev_enumerate, optarg);
break;
case 'a':
util_strlcpy(attr, optarg, sizeof(attr));
val = strchr(attr, '=');
if (val != NULL) {
val[0] = 0;
val = &val[1];
}
udev_enumerate_add_match_attr(udev_enumerate, attr, val);
break;
case 'A':
util_strlcpy(attr, optarg, sizeof(attr));
val = strchr(attr, '=');
if (val != NULL) {
val[0] = 0;
val = &val[1];
}
udev_enumerate_add_nomatch_attr(udev_enumerate, attr, val);
break;
case 'h':
printf("Usage: udevadm trigger OPTIONS\n"
" --verbose print the list of devices while running\n"
" --dry-run do not actually trigger the events\n"
" --type= type of events to trigger\n"
" devices sys devices\n"
" subsystems sys subsystems and drivers\n"
" failed trigger only the events which have been\n"
" marked as failed during a previous run\n"
" --subsystem-match=<subsystem> trigger devices from a matching subystem\n"
" --subsystem-nomatch=<subsystem> exclude devices from a matching subystem\n"
" --attr-match=<file[=<value>]> trigger devices with a matching attribute\n"
" --attr-nomatch=<file[=<value>]> exclude devices with a matching attribute\n"
" --help print this text\n"
"\n");
goto exit;
default:
goto exit;
}
}
switch (device_type) {
case TYPE_FAILED:
enumerate_scan_failed(udev_enumerate);
exec_list(udev_enumerate, action);
goto exit;
case TYPE_SUBSYSTEMS:
udev_enumerate_scan_subsystems(udev_enumerate);
exec_list(udev_enumerate, action);
goto exit;
case TYPE_DEVICES:
udev_enumerate_scan_devices(udev_enumerate);
exec_list(udev_enumerate, action);
goto exit;
default:
goto exit;
}
exit:
udev_enumerate_unref(udev_enumerate);
return rc;
}
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