37ec0fdd34
This is a bit like the info link in most of GNU's --help texts, but we don't do info but man pages, and we make them properly clickable on terminal supporting that, because awesome. I think it's generally advisable to link up our (brief) --help texts and our (more comprehensive) man pages a bit, so this should be an easy and straight-forward way to do it.
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#include <errno.h>
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#include <getopt.h>
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#include <stddef.h>
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#include <stdio.h>
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#include "selinux-util.h"
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#include "string-util.h"
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#include "terminal-util.h"
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#include "udev-util.h"
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#include "udev.h"
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static int adm_version(struct udev *udev, int argc, char *argv[]) {
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printf("%s\n", PACKAGE_VERSION);
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return 0;
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}
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static const struct udevadm_cmd udevadm_version = {
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.name = "version",
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.cmd = adm_version,
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};
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static int adm_help(struct udev *udev, int argc, char *argv[]);
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static const struct udevadm_cmd udevadm_help = {
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.name = "help",
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.cmd = adm_help,
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};
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static const struct udevadm_cmd *udevadm_cmds[] = {
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&udevadm_info,
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&udevadm_trigger,
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&udevadm_settle,
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&udevadm_control,
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&udevadm_monitor,
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&udevadm_hwdb,
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&udevadm_test,
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&udevadm_test_builtin,
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&udevadm_version,
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&udevadm_help,
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};
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static int adm_help(struct udev *udev, int argc, char *argv[]) {
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_cleanup_free_ char *link = NULL;
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size_t i;
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int r;
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r = terminal_urlify_man("udevadm", "8", &link);
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if (r < 0)
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return log_oom();
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printf("%s [--help] [--version] [--debug] COMMAND [COMMAND OPTIONS]\n\n"
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"Send control commands or test the device manager.\n\n"
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"Commands:\n"
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, program_invocation_short_name);
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for (i = 0; i < ELEMENTSOF(udevadm_cmds); i++)
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if (udevadm_cmds[i]->help != NULL)
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printf(" %-12s %s\n", udevadm_cmds[i]->name, udevadm_cmds[i]->help);
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printf("\nSee the %s for details.\n", link);
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return 0;
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}
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static int run_command(struct udev *udev, const struct udevadm_cmd *cmd, int argc, char *argv[]) {
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if (cmd->debug)
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log_set_max_level(LOG_DEBUG);
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log_debug("calling: %s", cmd->name);
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return cmd->cmd(udev, argc, argv);
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}
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int main(int argc, char *argv[]) {
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struct udev *udev;
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static const struct option options[] = {
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{ "debug", no_argument, NULL, 'd' },
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, 'V' },
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{}
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};
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const char *command;
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unsigned int i;
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int rc = 1, c;
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udev_parse_config();
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log_parse_environment();
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log_open();
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mac_selinux_init();
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udev = udev_new();
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if (udev == NULL)
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goto out;
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while ((c = getopt_long(argc, argv, "+dhV", options, NULL)) >= 0)
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switch (c) {
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case 'd':
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log_set_max_level(LOG_DEBUG);
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break;
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case 'h':
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rc = adm_help(udev, argc, argv);
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goto out;
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case 'V':
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rc = adm_version(udev, argc, argv);
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goto out;
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default:
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goto out;
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}
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command = argv[optind];
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if (command != NULL)
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for (i = 0; i < ELEMENTSOF(udevadm_cmds); i++)
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if (streq(udevadm_cmds[i]->name, command)) {
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argc -= optind;
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argv += optind;
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/* we need '0' here to reset the internal state */
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optind = 0;
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rc = run_command(udev, udevadm_cmds[i], argc, argv);
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goto out;
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}
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fprintf(stderr, "%s: missing or unknown command\n", program_invocation_short_name);
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rc = 2;
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out:
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mac_selinux_finish();
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udev_unref(udev);
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log_close();
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return rc;
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}
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