mirror of
https://github.com/systemd/systemd.git
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204 lines
4.9 KiB
C
204 lines
4.9 KiB
C
/*
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* Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
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* Copyright (C) 2004-2006 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 <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <errno.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <syslog.h>
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#include <getopt.h>
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#include "udev.h"
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#include "udev_rules.h"
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static int import_uevent_var(const char *devpath)
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{
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char path[PATH_SIZE];
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static char value[4096]; /* must stay, used with putenv */
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ssize_t size;
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int fd;
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char *key;
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char *next;
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int rc = -1;
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/* read uevent file */
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strlcpy(path, sysfs_path, sizeof(path));
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strlcat(path, devpath, sizeof(path));
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strlcat(path, "/uevent", sizeof(path));
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fd = open(path, O_RDONLY);
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if (fd < 0)
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goto out;
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size = read(fd, value, sizeof(value));
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close(fd);
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if (size < 0)
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goto out;
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value[size] = '\0';
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/* import keys into environment */
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key = value;
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while (key[0] != '\0') {
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next = strchr(key, '\n');
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if (next == NULL)
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goto out;
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next[0] = '\0';
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info("import into environment: '%s'\n", key);
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putenv(key);
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key = &next[1];
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}
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rc = 0;
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out:
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return rc;
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}
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int udevtest(int argc, char *argv[], char *envp[])
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{
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int force = 0;
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const char *action = "add";
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const char *subsystem = NULL;
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const char *devpath = NULL;
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struct udevice *udev;
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struct sysfs_device *dev;
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struct udev_rules rules = {};
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int retval;
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int rc = 0;
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static const struct option options[] = {
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{ "action", 1, NULL, 'a' },
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{ "subsystem", 1, NULL, 's' },
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{ "force", 0, NULL, 'f' },
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{ "help", 0, NULL, 'h' },
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{}
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};
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info("version %s\n", UDEV_VERSION);
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udev_config_init();
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if (udev_log_priority < LOG_INFO) {
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char priority[32];
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udev_log_priority = LOG_INFO;
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sprintf(priority, "%i", udev_log_priority);
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setenv("UDEV_LOG", priority, 1);
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}
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while (1) {
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int option;
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option = getopt_long(argc, argv, "a:s:fh", options, NULL);
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if (option == -1)
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break;
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dbg("option '%c'\n", option);
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switch (option) {
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case 'a':
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action = optarg;
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break;
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case 's':
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subsystem = optarg;
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break;
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case 'f':
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force = 1;
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break;
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case 'h':
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printf("Usage: udevadm test OPTIONS <devpath>\n"
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" --action=<string> set action string\n"
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" --subsystem=<string> set subsystem string\n"
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" --force don't skip node/link creation\n"
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" --help print this help text\n\n");
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exit(0);
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default:
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exit(1);
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}
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}
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devpath = argv[optind];
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if (devpath == NULL) {
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fprintf(stderr, "devpath parameter missing\n");
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rc = 1;
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goto exit;
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}
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printf("This program is for debugging only, it does not run any program,\n"
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"specified by a RUN key. It may show incorrect results, because\n"
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"some values may be different, or not available at a simulation run.\n"
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"\n");
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sysfs_init();
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udev_rules_init(&rules, 0);
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/* remove /sys if given */
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if (strncmp(devpath, sysfs_path, strlen(sysfs_path)) == 0)
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devpath = &devpath[strlen(sysfs_path)];
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dev = sysfs_device_get(devpath);
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if (dev == NULL) {
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fprintf(stderr, "unable to open device '%s'\n", devpath);
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rc = 2;
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goto exit;
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}
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udev = udev_device_init(NULL);
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if (udev == NULL) {
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fprintf(stderr, "error initializing device\n");
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rc = 3;
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goto exit;
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}
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if (subsystem != NULL)
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strlcpy(dev->subsystem, subsystem, sizeof(dev->subsystem));
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/* override built-in sysfs device */
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udev->dev = dev;
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strlcpy(udev->action, action, sizeof(udev->action));
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udev->devt = udev_device_get_devt(udev);
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/* simulate node creation with test flag */
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if (!force)
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udev->test_run = 1;
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setenv("DEVPATH", udev->dev->devpath, 1);
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setenv("SUBSYSTEM", udev->dev->subsystem, 1);
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setenv("ACTION", udev->action, 1);
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import_uevent_var(udev->dev->devpath);
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info("looking at device '%s' from subsystem '%s'\n", udev->dev->devpath, udev->dev->subsystem);
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retval = udev_device_event(&rules, udev);
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if (retval == 0 && !udev->ignore_device && udev_run) {
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struct name_entry *name_loop;
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list_for_each_entry(name_loop, &udev->run_list, node) {
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char program[PATH_SIZE];
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strlcpy(program, name_loop->name, sizeof(program));
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udev_rules_apply_format(udev, program, sizeof(program));
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info("run: '%s'\n", program);
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}
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}
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udev_device_cleanup(udev);
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exit:
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udev_rules_cleanup(&rules);
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sysfs_cleanup();
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return rc;
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}
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