udevd: use dev_t or netif ifindex as database key

[elogind.git] / udev / udevadm-info.c

diff --git a/udev/udevadm-info.c b/udev/udevadm-info.c
index b3b31ebafe459abc971527b05a2f82c51448989a..7206f4fcf621ed8f3c32cf35ed78d221b3b44a2e 100644 (file)
--- a/udev/udevadm-info.c
+++ b/udev/udevadm-info.c
@@ -195,6 +195,60 @@ static int export_devices(struct udev *udev)
        return 0;
 }
 
+static int convert_db(struct udev *udev)
+{
+       struct udev_enumerate *udev_enumerate;
+       struct udev_list_entry *list_entry;
+
+       udev_enumerate = udev_enumerate_new(udev);
+       if (udev_enumerate == NULL)
+               return -1;
+       udev_enumerate_scan_devices(udev_enumerate);
+       udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) {
+               struct udev_device *device;
+
+               device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry));
+               if (device != NULL) {
+                       const char *id;
+                       struct stat statbuf;
+                       char to[UTIL_PATH_SIZE];
+                       char devpath[UTIL_PATH_SIZE];
+                       char from[UTIL_PATH_SIZE];
+
+                       id = udev_device_get_id_filename(device);
+                       if (id == NULL)
+                               goto next;
+                       util_strscpyl(to, sizeof(to), udev_get_dev_path(udev), "/.udev/db/", id, NULL);
+
+                       /* do not overwrite a new database file */
+                       if (lstat(to, &statbuf) == 0)
+                               goto next;
+
+                       /* find old database with $subsys:$sysname */
+                       util_strscpyl(from, sizeof(from), udev_get_dev_path(udev),
+                                    "/.udev/db/", udev_device_get_subsystem(device), ":",
+                                    udev_device_get_sysname(device), NULL);
+                       if (lstat(from, &statbuf) == 0) {
+                               rename(from, to);
+                               goto next;
+                       }
+
+                       /* find old database with the encoded devpath */
+                       util_path_encode(udev_device_get_devpath(device), devpath, sizeof(devpath));
+                       util_strscpyl(from, sizeof(from), udev_get_dev_path(udev),
+                                     "/.udev/db/", devpath, NULL);
+                       if (lstat(from, &statbuf) == 0) {
+                               rename(from, to);
+                               goto next;
+                       }
+next:
+                       udev_device_unref(device);
+               }
+       }
+       udev_enumerate_unref(udev_enumerate);
+       return 0;
+}
+
 int udevadm_info(struct udev *udev, int argc, char *argv[])
 {
        struct udev_device *device = NULL;
@@ -212,6 +266,7 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                { "query", required_argument, NULL, 'q' },
                { "attribute-walk", no_argument, NULL, 'a' },
                { "export-db", no_argument, NULL, 'e' },
+               { "convert-db", no_argument, NULL, 'C' },
                { "root", no_argument, NULL, 'r' },
                { "device-id-of-file", required_argument, NULL, 'd' },
                { "export", no_argument, NULL, 'x' },
@@ -336,6 +391,9 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                case 'e':
                        export_devices(udev);
                        goto exit;
+               case 'C':
+                       convert_db(udev);
+                       goto exit;
                case 'x':
                        export = true;
                        break;
@@ -359,7 +417,10 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                               "  --attribute-walk           print all key matches while walking along the chain\n"
                               "                             of parent devices\n"
                               "  --device-id-of-file=<file> print major:minor of device containing this file\n"
+                              "  --export                   export key/value pairs\n"
+                              "  --export-prefix            export the key name with a prefix\n"
                               "  --export-db                export the content of the udev database\n"
+                              "  --convert-db               convert older version of database without a reboot\n"
                               "  --help\n\n");
                        goto exit;
                default: