#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"
char **main_argv;
char **main_envp;
-char sysfs_path[SYSFS_PATH_MAX];
-char *udev_config_dir;
-char *udev_root;
-char udev_db_filename[PATH_MAX+NAME_MAX];
-char udev_config_permission_filename[PATH_MAX+NAME_MAX];
-char udev_config_filename[PATH_MAX+NAME_MAX];
-
+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 inline char *get_action(void)
{
return seqnum;
}
-static void get_dirs(void)
+static void print_record(char *path, struct udevice *dev)
{
- char *udev_test;
- char *temp;
- int retval;
+ printf("P: %s\n", path);
+ printf("N: %s\n", dev->name);
+ printf("S: %s\n", dev->symlink);
+ printf("O: %s\n", dev->owner);
+ printf("G: %s\n", dev->group);
+ printf("\n");
+}
- udev_test = getenv("UDEV_TEST");
- if (udev_test == NULL) {
- /* normal operation, use the compiled in defaults */
- udev_config_dir = UDEV_CONFIG_DIR;
- udev_root = UDEV_ROOT;
- retval = sysfs_get_mnt_path(sysfs_path, SYSFS_PATH_MAX);
- dbg("sysfs_path = %s", sysfs_path);
- if (retval)
- dbg("sysfs_get_mnt_path failed");
+enum query_type {
+ NONE,
+ NAME,
+ SYMLINK,
+ OWNER,
+ GROUP
+};
- } else {
- /* hm testing is happening, use the specified values */
- temp = getenv("UDEV_SYSFS_PATH");
- strncpy(sysfs_path, temp, sizeof(sysfs_path));
- udev_config_dir = getenv("UDEV_CONFIG_DIR");
- udev_root = getenv("UDEV_ROOT");
+static inline int udev_user(int argc, char **argv)
+{
+ static const char short_options[] = "dp:q:rVh";
+ int option;
+ int retval = -EINVAL;
+ struct udevice dev;
+ int root = 0;
+ enum query_type query = NONE;
+ char result[NAME_SIZE] = "";
+ char path[NAME_SIZE] = "";
+
+ /* get command line options */
+ while (1) {
+ option = getopt(argc, argv, short_options);
+ if (option == -1)
+ break;
+
+ dbg("option '%c'", option);
+ switch (option) {
+ case 'p':
+ dbg("udev path: %s\n", optarg);
+ strfieldcpy(path, optarg);
+ break;
+
+ case 'q':
+ dbg("udev query: %s\n", optarg);
+
+ if (strcmp(optarg, "name") == 0) {
+ query = NAME;
+ break;
+ }
+
+ if (strcmp(optarg, "symlink") == 0) {
+ query = SYMLINK;
+ break;
+ }
+
+ if (strcmp(optarg, "owner") == 0) {
+ query = OWNER;
+ break;
+ }
+
+ if (strcmp(optarg, "group") == 0) {
+ query = GROUP;
+ break;
+ }
+
+ printf("unknown query type\n");
+ return -EINVAL;
+
+ case 'r':
+ root = 1;
+ break;
+
+ case 'd':
+ retval = udevdb_open_ro();
+ if (retval != 0) {
+ printf("unable to open udev database\n");
+ return -EACCES;
+ }
+ retval = udevdb_dump(print_record);
+ udevdb_exit();
+ return retval;
+
+ case 'V':
+ printf("udev, version %s\n", UDEV_VERSION);
+ return 0;
+
+ case 'h':
+ retval = 0;
+ case '?':
+ default:
+ goto help;
+ }
}
- strncpy(udev_db_filename, udev_config_dir, sizeof(udev_db_filename));
- strncat(udev_db_filename, UDEV_DB, sizeof(udev_db_filename));
+ /* process options */
+ if (query != NONE) {
+ if (path[0] == '\0') {
+ printf("query needs device path specified\n");
+ return -EINVAL;
+ }
+
+ retval = udevdb_open_ro();
+ if (retval != 0) {
+ printf("unable to open udev database\n");
+ return -EACCES;
+ }
+ retval = udevdb_get_dev(path, &dev);
+ if (retval == 0) {
+ switch(query) {
+ case NAME:
+ if (root)
+ strfieldcpy(result, udev_root);
+ strncat(result, dev.name, sizeof(result));
+ break;
+
+ case SYMLINK:
+ strfieldcpy(result, dev.symlink);
+ break;
- strncpy(udev_config_filename, udev_config_dir, sizeof(udev_config_filename));
- strncat(udev_config_filename, NAMEDEV_CONFIG_FILE, sizeof(udev_config_filename));
-
- strncpy(udev_config_permission_filename, udev_config_dir, sizeof(udev_config_permission_filename));
- strncat(udev_config_permission_filename, NAMEDEV_CONFIG_PERMISSION_FILE, sizeof(udev_config_permission_filename));
+ case GROUP:
+ strfieldcpy(result, dev.group);
+ break;
+
+ case OWNER:
+ strfieldcpy(result, dev.owner);
+ break;
+
+ default:
+ break;
+ }
+ printf("%s\n", result);
+ } else {
+ printf("device not found in udev database\n");
+ }
+ udevdb_exit();
+ return retval;
+ }
+
+ if (root) {
+ printf("%s\n", udev_root);
+ return 0;
+ }
+
+help:
+ printf("Usage: [-pqrdVh]\n"
+ " -q TYPE query database for the specified value:\n"
+ " 'name' name of device node\n"
+ " 'symlink' pointing to node\n"
+ " 'owner' of node\n"
+ " 'group' of node\n"
+ " -p PATH sysfs device path used for query\n"
+ " -r print udev root\n"
+ " -d dump whole database\n"
+ " -V print udev version\n"
+ " -h print this help text\n"
+ "\n");
+ return retval;
}
-int main(int argc, char **argv, char **envp)
+static char *subsystem_blacklist[] = {
+ "net",
+ "scsi_host",
+ "scsi_device",
+ "",
+};
+
+static inline int udev_hotplug(int argc, char **argv)
{
char *action;
char *devpath;
char *subsystem;
int retval = -EINVAL;
-
- main_argv = argv;
- main_envp = envp;
-
- dbg("version %s", UDEV_VERSION);
-
- if (argc != 2) {
- dbg ("unknown number of arguments");
- goto exit;
- }
+ int i;
subsystem = argv[1];
dbg ("no devpath?");
goto exit;
}
- dbg("looking at %s", devpath);
+ dbg("looking at '%s'", devpath);
/* we only care about class devices and block stuff */
if (!strstr(devpath, "class") &&
!strstr(devpath, "block")) {
- dbg("not block or class");
+ dbg("not a block or class device");
goto exit;
}
- /* but we don't care about net class devices */
- if (strcmp(subsystem, "net") == 0) {
- dbg("don't care about net devices");
- 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();
goto exit;
}
+ /* connect to the system message bus */
+ sysbus_connect();
+
/* initialize udev database */
- get_dirs();
retval = udevdb_init(UDEVDB_DEFAULT);
if (retval != 0) {
- dbg("Unable to initialize database.");
- goto exit;
+ 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();
retval = udev_remove_device(devpath, subsystem);
else {
- dbg("Unknown action: %s", action);
+ dbg("unknown action '%s'", action);
retval = -EINVAL;
}
udevdb_exit();
-exit:
+exit_sysbus:
+ /* disconnect from the system message bus */
+ sysbus_disconnect();
+
+exit:
+ if (retval > 0)
+ retval = 0;
+
+ return -retval;
+}
+
+int main(int argc, char **argv, char **envp)
+{
+ int retval;
+ main_argv = argv;
+ main_envp = envp;
+
+ 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