continue;
}
- replace_chars(value, ALLOWED_CHARS_INPUT);
printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value);
}
}
return rc;
}
+static int stat_device(const char *name)
+{
+ struct stat statbuf;
+
+ if (stat(name, &statbuf) != 0)
+ return -1;
+
+ printf("%d %d\n", major(statbuf.st_dev), minor(statbuf.st_dev));
+ return 0;
+}
+
int udevinfo(int argc, char *argv[], char *envp[])
{
int option;
{ "attribute-walk", 0, NULL, 'a' },
{ "export-db", 0, NULL, 'e' },
{ "root", 0, NULL, 'r' },
+ { "device-id-of-file", 1, NULL, 'd' },
{ "version", 0, NULL, 1 }, /* -V outputs braindead format */
{ "help", 0, NULL, 'h' },
{}
ACTION_QUERY,
ACTION_ATTRIBUTE_WALK,
ACTION_ROOT,
+ ACTION_DEVICE_ID_FILE,
} action = ACTION_NONE;
enum query_type {
}
while (1) {
- option = getopt_long(argc, argv, "aen:p:q:rVh", options, NULL);
+ option = getopt_long(argc, argv, "aed:n:p:q:rVh", options, NULL);
if (option == -1)
break;
strlcpy(name, &optarg[strlen(udev_root)+1], sizeof(name));
else
strlcpy(name, optarg, sizeof(name));
+ remove_trailing_chars(name, '/');
dbg("name: %s", name);
break;
case 'p':
strlcpy(path, &optarg[strlen(sysfs_path)], sizeof(path));
else
strlcpy(path, optarg, sizeof(path));
+ remove_trailing_chars(path, '/');
+
+ /* possibly resolve to real devpath */
+ if (sysfs_resolve_link(path, sizeof(path)) != 0) {
+ char temp[PATH_SIZE];
+ char *pos;
+
+ /* also check if the parent is a link */
+ strlcpy(temp, path, sizeof(temp));
+ pos = strrchr(temp, '/');
+ if (pos != 0) {
+ char tail[PATH_SIZE];
+
+ strlcpy(tail, pos, sizeof(tail));
+ pos[0] = '\0';
+ if (sysfs_resolve_link(temp, sizeof(temp)) == 0) {
+ strlcpy(path, temp, sizeof(path));
+ strlcat(path, tail, sizeof(path));
+ }
+ }
+ }
dbg("path: %s", path);
break;
case 'q':
action = ACTION_ROOT;
root = 1;
break;
+ case 'd':
+ action = ACTION_DEVICE_ID_FILE;
+ strlcpy(name, optarg, sizeof(name));
+ break;
case 'a':
action = ACTION_ATTRIBUTE_WALK;
break;
goto exit;
case 'h':
printf("Usage: udevadm info OPTIONS\n"
- " --query=<type> query database for the specified value:\n"
- " name name of device node\n"
- " symlink pointing to node\n"
- " path sysfs device path\n"
- " env the device related imported environment\n"
- " all all values\n"
- "\n"
- " --path=<devpath> sysfs device path used for query or chain\n"
- " --name=<name> node or symlink name used for query\n"
- "\n"
- " --root prepend to query result or print udev_root\n"
- " --attribute-walk print all SYSFS_attributes along the device chain\n"
- " --export-db export the content of the udev database\n"
- " --help print this text\n"
+ " --query=<type> query database for the specified value:\n"
+ " name name of device node\n"
+ " symlink pointing to node\n"
+ " path sysfs device path\n"
+ " env the device related imported environment\n"
+ " all all values\n"
+ " --path=<devpath> sysfs device path used for query or chain\n"
+ " --name=<name> node or symlink name used for query\n"
+ " --root prepend to query result or print udev_root\n"
+ " --attribute-walk print all key matches while walking along chain\n"
+ " of parent devices\n"
+ " --device-id-of-file=<file> print major/minor of underlying device\n"
+ " --export-db export the content of the udev database\n"
+ " --help print this text\n"
"\n");
goto exit;
default:
goto exit;
}
break;
+ case ACTION_DEVICE_ID_FILE:
+ if (stat_device(name) != 0)
+ rc = 6;
+ break;
case ACTION_ROOT:
printf("%s\n", udev_root);
break;