166 lines
3.4 KiB
C
166 lines
3.4 KiB
C
/*
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* Copyright (C) 2007 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <errno.h>
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#include <getopt.h>
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#include "udev.h"
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static int verbose;
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#ifdef USE_LOG
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void log_message(int priority, const char *format, ...)
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{
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va_list args;
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if (priority > udev_log_priority)
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return;
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va_start(args, format);
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if (verbose) {
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vprintf(format, args);
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printf("\n");
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} else
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vsyslog(priority, format, args);
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va_end(args);
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}
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#endif
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struct command {
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const char *name;
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int (*cmd)(int argc, char *argv[], char *envp[]);
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const char *help;
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int verbose;
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};
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static const struct command cmds[];
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static int version(int argc, char *argv[], char *envp[])
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{
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printf("%s\n", UDEV_VERSION);
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return 0;
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}
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static int help(int argc, char *argv[], char *envp[])
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{
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const struct command *cmd;
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printf("Usage: udev COMMAND [OPTIONS]\n");
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for (cmd = cmds; cmd->name != NULL; cmd++)
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printf(" %-12s %s\n", cmd->name, cmd->help);
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printf("\n");
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return 0;
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}
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static const struct command cmds[] = {
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{
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.name = "info",
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.cmd = udevinfo,
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.help = "query sysfs or the udev database",
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},
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{
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.name = "trigger",
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.cmd = udevtrigger,
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.help = "request events from the kernel",
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},
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{
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.name = "settle",
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.cmd = udevsettle, "",
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.help = "wait for the event queue to finish",
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},
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{
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.name = "control",
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.cmd = udevcontrol,
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.help = "control the udev daemon",
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},
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{
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.name = "monitor",
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.cmd = udevmonitor,
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.help = "listen to kernel and udev events",
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},
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{
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.name = "test",
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.cmd = udevtest,
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.help = "simulation run",
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.verbose = 1,
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},
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{
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.name = "version",
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.cmd = version,
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.help = "print the version number",
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},
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{
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.name = "help",
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.cmd = help,
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.help = "print this help text",
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},
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{}
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};
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int main(int argc, char *argv[], char *envp[])
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{
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const char *command;
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const char *pos;
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const struct command *cmd;
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int rc;
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/* get binary or symlink name */
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pos = strrchr(argv[0], '/');
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if (pos != NULL)
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command = &pos[1];
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else
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command = argv[0];
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/* the trailing part of the binary or symlink name is the command */
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if (strncmp(command, "udev", 4) == 0)
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command = &command[4];
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if (command == NULL || command[0] == '\0')
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goto err_unknown;
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/* udevadm itself needs to strip its name from the passed options */
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if (strcmp(command, "adm") == 0) {
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command = argv[1];
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argv++;
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argc--;
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}
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if (command == NULL || command[0] == '\0')
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goto err_unknown;
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/* find and execute command */
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for (cmd = cmds; cmd->name != NULL; cmd++) {
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if (strcmp(cmd->name, command) == 0) {
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verbose = cmd->verbose;
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rc = cmd->cmd(argc, argv, envp);
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goto out;
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}
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}
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err_unknown:
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fprintf(stderr, "unknown command, try help\n\n");
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rc = 2;
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out:
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return rc;
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}
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