#include <stdlib.h>
#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <ctype.h>
+#include <signal.h>
+#include <stdarg.h>
+
#include "udev.h"
#include "udev_version.h"
+#include "udev_dbus.h"
+#include "namedev.h"
+#include "udevdb.h"
+#include "libsysfs/libsysfs.h"
+
+/* global variables */
+char **main_argv;
+char **main_envp;
+static void sig_handler(int signum)
+{
+ dbg("caught signal %d", signum);
+ switch (signum) {
+ case SIGINT:
+ case SIGTERM:
+ case SIGKILL:
+ sysbus_disconnect();
+ udevdb_exit();
+ exit(20 + signum);
+ break;
+ default:
+ dbg("unhandled signal");
+ }
+}
-static char *get_action(void)
+static inline char *get_action(void)
{
char *action;
return action;
}
+static inline char *get_devpath(void)
+{
+ char *devpath;
+
+ devpath = getenv("DEVPATH");
+ return devpath;
+}
+
+static inline char *get_seqnum(void)
+{
+ char *seqnum;
-/* yeah this should be dynamically allocated... */
-static char device[255];
+ seqnum = getenv("SEQNUM");
+ return seqnum;
+}
-static char *get_device(void)
+static inline int udev_user(int argc, char **argv)
{
- char *temp;
+ static const char short_options[] = "q:rVh";
+ int option;
+ int retval = -EINVAL;
+ struct udevice dev;
+
+ while (1) {
+ option = getopt(argc, argv, short_options);
+ if (option == -1)
+ break;
+
+ dbg("option '%c'", option);
+ switch (option) {
+ case 'q':
+ dbg("udev query: %s\n", optarg);
+ retval = udevdb_open_ro();
+ if (retval != 0) {
+ printf("unable to open udev database\n");
+ return -1;
+ }
+ retval = udevdb_get_dev(optarg, &dev);
+ if (retval == 0) {
+ printf("%s\n", dev.name);
+ } else {
+ printf("device not found in udev database\n");
+ }
+ udevdb_exit();
+ return retval;
+
+ case 'r':
+ printf("%s\n", udev_root);
+ return 0;
+
+ case 'V':
+ printf("udev, version %s\n", UDEV_VERSION);
+ return 0;
+
+ case 'h':
+ retval = 0;
+ case '?':
+ default:
+ goto help;
+ }
+ }
- temp = getenv("DEVPATH");
- if (temp == NULL)
- return NULL;
- strcpy(device, SYSFS_ROOT);
- strcat(device, temp);
+help:
+ printf("Usage: [-qrVh]\n"
+ " -q <path> query database for the name of the created node\n"
+ " -r print udev root\n"
+ " -V print udev version\n"
+ " -h print this help text\n"
+ "\n");
- return device;
+ return retval;
}
+static char *subsystem_blacklist[] = {
+ "net",
+ "scsi_host",
+ "scsi_device",
+ "",
+};
-int main(int argc, char *argv[])
+static inline int udev_hotplug(int argc, char **argv)
{
- char *subsystem;
char *action;
- char *dev;
-
- if (argc != 2) {
- dbg ("unknown number of arguments");
- return 1;
- }
+ char *devpath;
+ char *subsystem;
+ int retval = -EINVAL;
+ int i;
subsystem = argv[1];
+ devpath = get_devpath();
+ if (!devpath) {
+ dbg ("no devpath?");
+ goto exit;
+ }
+ dbg("looking at '%s'", devpath);
+
+ /* we only care about class devices and block stuff */
+ if (!strstr(devpath, "class") &&
+ !strstr(devpath, "block")) {
+ dbg("not a block or class device");
+ goto exit;
+ }
+
+ /* skip blacklisted subsystems */
+ i = 0;
+ while (subsystem_blacklist[i][0] != '\0') {
+ if (strcmp(subsystem, subsystem_blacklist[i]) == 0) {
+ dbg("don't care about '%s' devices", subsystem);
+ goto exit;
+ }
+ i++;
+ }
+
action = get_action();
if (!action) {
dbg ("no action?");
- return 1;
+ goto exit;
}
- dev = get_device();
- if (!dev) {
- dbg ("no device?");
- return 1;
+ /* connect to the system message bus */
+ sysbus_connect();
+
+ /* initialize udev database */
+ retval = udevdb_init(UDEVDB_DEFAULT);
+ if (retval != 0) {
+ dbg("unable to initialize database");
+ goto exit_sysbus;
+ }
+
+ /* set up a default signal handler for now */
+ signal(SIGINT, sig_handler);
+ signal(SIGTERM, sig_handler);
+ signal(SIGKILL, sig_handler);
+
+ /* initialize the naming deamon */
+ namedev_init();
+
+ if (strcmp(action, "add") == 0)
+ retval = udev_add_device(devpath, subsystem);
+
+ else if (strcmp(action, "remove") == 0)
+ retval = udev_remove_device(devpath, subsystem);
+
+ else {
+ dbg("unknown action '%s'", action);
+ retval = -EINVAL;
}
+ udevdb_exit();
+
+exit_sysbus:
+ /* disconnect from the system message bus */
+ sysbus_disconnect();
+
+exit:
+ if (retval > 0)
+ retval = 0;
- return 0;
+ return -retval;
}
+int main(int argc, char **argv, char **envp)
+{
+ main_argv = argv;
+ main_envp = envp;
+ int retval;
+
+ dbg("version %s", UDEV_VERSION);
+
+ /* initialize our configuration */
+ udev_init_config();
+
+ if (argc == 2 && argv[1][0] != '-') {
+ dbg("called by hotplug");
+ retval = udev_hotplug(argc, argv);
+ } else {
+ dbg("called by user");
+ retval = udev_user(argc, argv);
+ }
+
+ return retval;
+}
+
+
~ianmdlvl / elogind.git / blobdiff