chiark / gitweb /
man: fix typo
[elogind.git] / udev / udevadm-info.c
index b9892eca05bb1b33585c2e00a856e13128bfd082..4510f4aa907dc56a22544564ec1e10045046bf61 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2004-2009 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
@@ -25,6 +25,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <getopt.h>
+#include <fcntl.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
@@ -40,7 +41,6 @@ static void print_all_attributes(struct udev_device *device, const char *key)
        if (dir != NULL) {
                for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
                        struct stat statbuf;
-                       char filename[UTIL_PATH_SIZE];
                        const char *value;
                        size_t len;
 
@@ -52,10 +52,7 @@ static void print_all_attributes(struct udev_device *device, const char *key)
                        if (strcmp(dent->d_name, "dev") == 0)
                                continue;
 
-                       util_strlcpy(filename, udev_device_get_syspath(device), sizeof(filename));
-                       util_strlcat(filename, "/", sizeof(filename));
-                       util_strlcat(filename, dent->d_name, sizeof(filename));
-                       if (lstat(filename, &statbuf) != 0)
+                       if (fstatat(dirfd(dir), dent->d_name, &statbuf, AT_SYMLINK_NOFOLLOW) != 0)
                                continue;
                        if (S_ISLNK(statbuf.st_mode))
                                continue;
@@ -63,7 +60,7 @@ static void print_all_attributes(struct udev_device *device, const char *key)
                        value = udev_device_get_sysattr_value(device, dent->d_name);
                        if (value == NULL)
                                continue;
-                       dbg(udev, "attr '%s'='%s'(%zi)\n", dent->d_name, value, len);
+                       dbg(udev, "attr '%s'='%s'\n", dent->d_name, value);
 
                        /* skip nonprintable attributes */
                        len = strlen(value);
@@ -145,18 +142,6 @@ static void print_record(struct udev_device *device)
        if (i != 0)
                printf("L: %i\n", i);
 
-       i = udev_device_get_num_fake_partitions(device);
-       if (i != 0)
-               printf("A:%u\n", i);
-
-       i = udev_device_get_ignore_remove(device);
-       if (i != 0)
-               printf("R:%u\n", i);
-
-       i = udev_device_get_watch_handle(device);
-       if (i >= 0)
-               printf("W:%u\n", i);
-
        udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) {
                len = strlen(udev_get_dev_path(udev_device_get_udev(device)));
                printf("S: %s\n", &udev_list_entry_get_name(list_entry)[len+1]);
@@ -169,7 +154,7 @@ static void print_record(struct udev_device *device)
        printf("\n");
 }
 
-static int stat_device(const char *name, int export, const char *prefix)
+static int stat_device(const char *name, bool export, const char *prefix)
 {
        struct stat statbuf;
 
@@ -210,11 +195,71 @@ 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 stats;
+                       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) {
+                               udev_device_unref(device);
+                               continue;
+                       }
+                       util_strscpyl(to, sizeof(to), udev_get_dev_path(udev), "/.udev/db/", id, NULL);
+
+                       /* 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, &stats) == 0) {
+                               if (lstat(to, &stats) == 0)
+                                       unlink(from);
+                               else
+                                       rename(from, to);
+                       }
+
+                       /* 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, &stats) == 0) {
+                               if (lstat(to, &stats) == 0)
+                                       unlink(from);
+                               else
+                                       rename(from, to);
+                       }
+
+                       /* read the old database, and write out a new one */
+                       udev_device_read_db(device);
+                       udev_device_update_db(device);
+
+                       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;
-       int root = 0;
-       int export = 0;
+       bool root = 0;
+       bool export = 0;
        const char *export_prefix = NULL;
        char path[UTIL_PATH_SIZE];
        char name[UTIL_PATH_SIZE];
@@ -227,6 +272,7 @@ 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' },
@@ -249,15 +295,15 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                QUERY_NAME,
                QUERY_PATH,
                QUERY_SYMLINK,
-               QUERY_ENV,
+               QUERY_PROPERTY,
                QUERY_ALL,
        } query = QUERY_NONE;
 
-       while (1) {
+       for (;;) {
                int option;
                struct stat statbuf;
 
-               option = getopt_long(argc, argv, "aed:n:p:q:rxPVh", options, NULL);
+               option = getopt_long(argc, argv, "aed:n:p:q:rxP:Vh", options, NULL);
                if (option == -1)
                        break;
 
@@ -270,13 +316,10 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                                goto exit;
                        }
                        /* remove /dev if given */
-                       if (strncmp(optarg, udev_get_dev_path(udev), strlen(udev_get_dev_path(udev))) != 0) {
-                               util_strlcpy(name, udev_get_dev_path(udev), sizeof(name));
-                               util_strlcat(name, "/", sizeof(name));
-                               util_strlcat(name, optarg, sizeof(name));
-                       } else {
-                               util_strlcpy(name, optarg, sizeof(name));
-                       }
+                       if (strncmp(optarg, udev_get_dev_path(udev), strlen(udev_get_dev_path(udev))) != 0)
+                               util_strscpyl(name, sizeof(name), udev_get_dev_path(udev), "/", optarg, NULL);
+                       else
+                               util_strscpy(name, sizeof(name), optarg);
                        util_remove_trailing_chars(name, '/');
                        if (stat(name, &statbuf) < 0) {
                                fprintf(stderr, "device node not found\n");
@@ -309,12 +352,10 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                                goto exit;
                        }
                        /* add sys dir if needed */
-                       if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) {
-                               util_strlcpy(path, udev_get_sys_path(udev), sizeof(path));
-                               util_strlcat(path, optarg, sizeof(path));
-                       } else {
-                               util_strlcpy(path, optarg, sizeof(path));
-                       }
+                       if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0)
+                               util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), optarg, NULL);
+                       else
+                               util_strscpy(path, sizeof(path), optarg);
                        util_remove_trailing_chars(path, '/');
                        device = udev_device_new_from_syspath(udev, path);
                        if (device == NULL) {
@@ -325,37 +366,30 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                        break;
                case 'q':
                        action = ACTION_QUERY;
-                       if (strcmp(optarg, "name") == 0) {
+                       if (strcmp(optarg, "property") == 0 || strcmp(optarg, "env") == 0) {
+                               query = QUERY_PROPERTY;
+                       } else if (strcmp(optarg, "name") == 0) {
                                query = QUERY_NAME;
-                               break;
-                       }
-                       if (strcmp(optarg, "symlink") == 0) {
+                       } else if (strcmp(optarg, "symlink") == 0) {
                                query = QUERY_SYMLINK;
-                               break;
-                       }
-                       if (strcmp(optarg, "path") == 0) {
+                       } else if (strcmp(optarg, "path") == 0) {
                                query = QUERY_PATH;
-                               break;
-                       }
-                       if (strcmp(optarg, "env") == 0) {
-                               query = QUERY_ENV;
-                               break;
-                       }
-                       if (strcmp(optarg, "all") == 0) {
+                       } else if (strcmp(optarg, "all") == 0) {
                                query = QUERY_ALL;
-                               break;
+                       } else {
+                               fprintf(stderr, "unknown query type\n");
+                               rc = 3;
+                               goto exit;
                        }
-                       fprintf(stderr, "unknown query type\n");
-                       rc = 3;
-                       goto exit;
+                       break;
                case 'r':
                        if (action == ACTION_NONE)
                                action = ACTION_ROOT;
-                       root = 1;
+                       root = true;
                        break;
                case 'd':
                        action = ACTION_DEVICE_ID_FILE;
-                       util_strlcpy(name, optarg, sizeof(name));
+                       util_strscpy(name, sizeof(name), optarg);
                        break;
                case 'a':
                        action = ACTION_ATTRIBUTE_WALK;
@@ -363,8 +397,11 @@ 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 = 1;
+                       export = true;
                        break;
                case 'P':
                        export_prefix = optarg;
@@ -378,7 +415,7 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                               "      name                     name of device node\n"
                               "      symlink                  pointing to node\n"
                               "      path                     sys device path\n"
-                              "      env                      the device related imported environment\n"
+                              "      property                 the device properties\n"
                               "      all                      all values\n"
                               "  --path=<syspath>           sys device path used for query or attribute walk\n"
                               "  --name=<name>              node or symlink name used for query or attribute walk\n"
@@ -386,9 +423,11 @@ 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"
-                              "  --help                     print this text\n"
-                              "\n");
+                              "  --convert-db               convert older version of database without a reboot\n"
+                              "  --help\n\n");
                        goto exit;
                default:
                        goto exit;
@@ -404,23 +443,24 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                }
 
                switch(query) {
-               case QUERY_NAME:
+               case QUERY_NAME: {
+                       const char *node = udev_device_get_devnode(device);
+
+                       if (node == NULL) {
+                               fprintf(stderr, "no device node found\n");
+                               rc = 5;
+                               goto exit;
+                       }
+
                        if (root) {
                                printf("%s\n", udev_device_get_devnode(device));
                        } else {
-                               size_t len;
-                               const char *node;
-
-                               len = strlen(udev_get_dev_path(udev));
-                               node = udev_device_get_devnode(device);
-                               if (node == NULL) {
-                                       fprintf(stderr, "no device node found\n");
-                                       rc = 5;
-                                       goto exit;
-                               }
-                                       printf("%s\n", &udev_device_get_devnode(device)[len+1]);
+                               size_t len = strlen(udev_get_dev_path(udev));
+
+                               printf("%s\n", &udev_device_get_devnode(device)[len+1]);
                        }
                        break;
+               }
                case QUERY_SYMLINK:
                        list_entry = udev_device_get_devlinks_list_entry(device);
                        while (list_entry != NULL) {
@@ -441,10 +481,20 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
                case QUERY_PATH:
                        printf("%s\n", udev_device_get_devpath(device));
                        goto exit;
-               case QUERY_ENV:
+               case QUERY_PROPERTY:
                        list_entry = udev_device_get_properties_list_entry(device);
                        while (list_entry != NULL) {
-                               printf("%s=%s\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
+                               if (export) {
+                                       const char *prefix = export_prefix;
+
+                                       if (prefix == NULL)
+                                               prefix = "";
+                                       printf("%s%s='%s'\n", prefix,
+                                              udev_list_entry_get_name(list_entry),
+                                              udev_list_entry_get_value(list_entry));
+                               } else {
+                                       printf("%s=%s\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
+                               }
                                list_entry = udev_list_entry_get_next(list_entry);
                        }
                        break;