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/*
* Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2004-2006 Kay Sievers <kay.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 version 2 of the License.
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <signal.h>
#include <syslog.h>
#include <getopt.h>
#include "udev.h"
#include "udev_rules.h"
#ifdef USE_LOG
void log_message (int priority, const char *format, ...)
{
va_list args;
if (priority > udev_log_priority)
return;
va_start(args, format);
vprintf(format, args);
va_end(args);
printf("\n");
}
#endif
static int import_uevent_var(const char *devpath)
{
char path[PATH_SIZE];
static char value[4096]; /* must stay, used with putenv */
ssize_t size;
int fd;
char *key;
char *next;
int rc = -1;
/* read uevent file */
strlcpy(path, sysfs_path, sizeof(path));
strlcat(path, devpath, sizeof(path));
strlcat(path, "/uevent", sizeof(path));
fd = open(path, O_RDONLY);
if (fd < 0)
goto out;
size = read(fd, value, sizeof(value));
close(fd);
if (size < 0)
goto out;
value[size] = '\0';
/* import keys into environment */
key = value;
while (key[0] != '\0') {
next = strchr(key, '\n');
if (next == NULL)
goto out;
next[0] = '\0';
info("import into environment: '%s'", key);
putenv(key);
key = &next[1];
}
rc = 0;
out:
return rc;
}
int main(int argc, char *argv[], char *envp[])
{
int force = 0;
const char *action = "add";
const char *subsystem = NULL;
const char *devpath = NULL;
struct udevice *udev;
struct sysfs_device *dev;
struct udev_rules rules = {};
int retval;
int rc = 0;
static const struct option options[] = {
{ "action", 1, NULL, 'a' },
{ "subsystem", 1, NULL, 's' },
{ "force", 0, NULL, 'f' },
{ "help", 0, NULL, 'h' },
{}
};
info("version %s", UDEV_VERSION);
udev_config_init();
if (udev_log_priority < LOG_INFO) {
char priority[32];
udev_log_priority = LOG_INFO;
sprintf(priority, "%i", udev_log_priority);
setenv("UDEV_LOG", priority, 1);
}
while (1) {
int option;
option = getopt_long(argc, argv, "a:s:fh", options, NULL);
if (option == -1)
break;
dbg("option '%c'", option);
switch (option) {
case 'a':
action = optarg;
break;
case 's':
subsystem = optarg;
break;
case 'f':
force = 1;
break;
case 'h':
printf("Usage: udevtest OPTIONS <devpath>\n"
" --action=<string> set action string\n"
" --subsystem=<string> set subsystem string\n"
" --force don't skip node/link creation\n"
" --help print this help text\n\n");
exit(0);
default:
exit(1);
}
}
devpath = argv[optind];
if (devpath == NULL) {
fprintf(stderr, "devpath parameter missing\n");
rc = 1;
goto exit;
}
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");
sysfs_init();
udev_rules_init(&rules, 0);
/* remove /sys if given */
if (strncmp(devpath, sysfs_path, strlen(sysfs_path)) == 0)
devpath = &devpath[strlen(sysfs_path)];
dev = sysfs_device_get(devpath);
if (dev == NULL) {
fprintf(stderr, "unable to open device '%s'\n", devpath);
rc = 2;
goto exit;
}
udev = udev_device_init(NULL);
if (udev == NULL) {
fprintf(stderr, "error initializing device\n");
rc = 3;
goto exit;
}
if (subsystem != NULL)
strlcpy(dev->subsystem, subsystem, sizeof(dev->subsystem));
/* override built-in sysfs device */
udev->dev = dev;
strlcpy(udev->action, action, sizeof(udev->action));
udev->devt = udev_device_get_devt(udev);
/* simulate node creation with test flag */
if (!force)
udev->test_run = 1;
setenv("DEVPATH", udev->dev->devpath, 1);
setenv("SUBSYSTEM", udev->dev->subsystem, 1);
setenv("ACTION", udev->action, 1);
import_uevent_var(udev->dev->devpath);
info("looking at device '%s' from subsystem '%s'", udev->dev->devpath, udev->dev->subsystem);
retval = udev_device_event(&rules, udev);
if (retval == 0 && !udev->ignore_device && udev_run) {
struct name_entry *name_loop;
list_for_each_entry(name_loop, &udev->run_list, node) {
char program[PATH_SIZE];
strlcpy(program, name_loop->name, sizeof(program));
udev_rules_apply_format(udev, program, sizeof(program));
info("run: '%s'", program);
}
}
udev_device_cleanup(udev);
exit:
udev_rules_cleanup(&rules);
sysfs_cleanup();
return rc;
}
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