static bool skip_attribute(const char *name)
{
- static const char const *skip[] = {
- "uevent",
- "dev",
- "modalias",
- "resource",
- "driver",
- "subsystem",
- "module",
- };
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(skip); i++)
- if (strcmp(name, skip[i]) == 0)
- return true;
- return false;
+ static const char const *skip[] = {
+ "uevent",
+ "dev",
+ "modalias",
+ "resource",
+ "driver",
+ "subsystem",
+ "module",
+ };
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(skip); i++)
+ if (strcmp(name, skip[i]) == 0)
+ return true;
+ return false;
}
static void print_all_attributes(struct udev_device *device, const char *key)
{
- struct udev *udev = udev_device_get_udev(device);
- struct udev_list_entry *sysattr;
-
- udev_list_entry_foreach(sysattr, udev_device_get_sysattr_list_entry(device)) {
- const char *name;
- const char *value;
- size_t len;
-
- name = udev_list_entry_get_name(sysattr);
- if (skip_attribute(name))
- continue;
-
- value = udev_device_get_sysattr_value(device, name);
- if (value == NULL)
- continue;
- dbg(udev, "attr '%s'='%s'\n", name, value);
-
- /* skip any values that look like a path */
- if (value[0] == '/')
- continue;
-
- /* skip nonprintable attributes */
- len = strlen(value);
- while (len > 0 && isprint(value[len-1]))
- len--;
- if (len > 0) {
- dbg(udev, "attribute value of '%s' non-printable, skip\n", name);
- continue;
- }
-
- printf(" %s{%s}==\"%s\"\n", key, name, value);
- }
- printf("\n");
+ struct udev *udev = udev_device_get_udev(device);
+ struct udev_list_entry *sysattr;
+
+ udev_list_entry_foreach(sysattr, udev_device_get_sysattr_list_entry(device)) {
+ const char *name;
+ const char *value;
+ size_t len;
+
+ name = udev_list_entry_get_name(sysattr);
+ if (skip_attribute(name))
+ continue;
+
+ value = udev_device_get_sysattr_value(device, name);
+ if (value == NULL)
+ continue;
+ dbg(udev, "attr '%s'='%s'\n", name, value);
+
+ /* skip any values that look like a path */
+ if (value[0] == '/')
+ continue;
+
+ /* skip nonprintable attributes */
+ len = strlen(value);
+ while (len > 0 && isprint(value[len-1]))
+ len--;
+ if (len > 0) {
+ dbg(udev, "attribute value of '%s' non-printable, skip\n", name);
+ continue;
+ }
+
+ printf(" %s{%s}==\"%s\"\n", key, name, value);
+ }
+ printf("\n");
}
static int print_device_chain(struct udev_device *device)
{
- struct udev_device *device_parent;
- const char *str;
-
- printf("\n"
- "Udevadm info starts with the device specified by the devpath and then\n"
- "walks up the chain of parent devices. It prints for every device\n"
- "found, all possible attributes in the udev rules key format.\n"
- "A rule to match, can be composed by the attributes of the device\n"
- "and the attributes from one single parent device.\n"
- "\n");
-
- printf(" looking at device '%s':\n", udev_device_get_devpath(device));
- printf(" KERNEL==\"%s\"\n", udev_device_get_sysname(device));
- str = udev_device_get_subsystem(device);
- if (str == NULL)
- str = "";
- printf(" SUBSYSTEM==\"%s\"\n", str);
- str = udev_device_get_driver(device);
- if (str == NULL)
- str = "";
- printf(" DRIVER==\"%s\"\n", str);
- print_all_attributes(device, "ATTR");
-
- device_parent = device;
- do {
- device_parent = udev_device_get_parent(device_parent);
- if (device_parent == NULL)
- break;
- printf(" looking at parent device '%s':\n", udev_device_get_devpath(device_parent));
- printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device_parent));
- str = udev_device_get_subsystem(device_parent);
- if (str == NULL)
- str = "";
- printf(" SUBSYSTEMS==\"%s\"\n", str);
- str = udev_device_get_driver(device_parent);
- if (str == NULL)
- str = "";
- printf(" DRIVERS==\"%s\"\n", str);
- print_all_attributes(device_parent, "ATTRS");
- } while (device_parent != NULL);
-
- return 0;
+ struct udev_device *device_parent;
+ const char *str;
+
+ printf("\n"
+ "Udevadm info starts with the device specified by the devpath and then\n"
+ "walks up the chain of parent devices. It prints for every device\n"
+ "found, all possible attributes in the udev rules key format.\n"
+ "A rule to match, can be composed by the attributes of the device\n"
+ "and the attributes from one single parent device.\n"
+ "\n");
+
+ printf(" looking at device '%s':\n", udev_device_get_devpath(device));
+ printf(" KERNEL==\"%s\"\n", udev_device_get_sysname(device));
+ str = udev_device_get_subsystem(device);
+ if (str == NULL)
+ str = "";
+ printf(" SUBSYSTEM==\"%s\"\n", str);
+ str = udev_device_get_driver(device);
+ if (str == NULL)
+ str = "";
+ printf(" DRIVER==\"%s\"\n", str);
+ print_all_attributes(device, "ATTR");
+
+ device_parent = device;
+ do {
+ device_parent = udev_device_get_parent(device_parent);
+ if (device_parent == NULL)
+ break;
+ printf(" looking at parent device '%s':\n", udev_device_get_devpath(device_parent));
+ printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device_parent));
+ str = udev_device_get_subsystem(device_parent);
+ if (str == NULL)
+ str = "";
+ printf(" SUBSYSTEMS==\"%s\"\n", str);
+ str = udev_device_get_driver(device_parent);
+ if (str == NULL)
+ str = "";
+ printf(" DRIVERS==\"%s\"\n", str);
+ print_all_attributes(device_parent, "ATTRS");
+ } while (device_parent != NULL);
+
+ return 0;
}
static void print_record(struct udev_device *device)
{
- size_t len;
- const char *str;
- int i;
- struct udev_list_entry *list_entry;
-
- printf("P: %s\n", udev_device_get_devpath(device));
-
- len = strlen(udev_get_dev_path(udev_device_get_udev(device)));
- str = udev_device_get_devnode(device);
- if (str != NULL)
- printf("N: %s\n", &str[len+1]);
-
- i = udev_device_get_devlink_priority(device);
- if (i != 0)
- printf("L: %i\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]);
- }
-
- udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device))
- printf("E: %s=%s\n",
- udev_list_entry_get_name(list_entry),
- udev_list_entry_get_value(list_entry));
- printf("\n");
+ size_t len;
+ const char *str;
+ int i;
+ struct udev_list_entry *list_entry;
+
+ printf("P: %s\n", udev_device_get_devpath(device));
+
+ len = strlen(udev_get_dev_path(udev_device_get_udev(device)));
+ str = udev_device_get_devnode(device);
+ if (str != NULL)
+ printf("N: %s\n", &str[len+1]);
+
+ i = udev_device_get_devlink_priority(device);
+ if (i != 0)
+ printf("L: %i\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]);
+ }
+
+ udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device))
+ printf("E: %s=%s\n",
+ udev_list_entry_get_name(list_entry),
+ udev_list_entry_get_value(list_entry));
+ printf("\n");
}
static int stat_device(const char *name, bool export, const char *prefix)
{
- struct stat statbuf;
-
- if (stat(name, &statbuf) != 0)
- return -1;
-
- if (export) {
- if (prefix == NULL)
- prefix = "INFO_";
- printf("%sMAJOR=%d\n"
- "%sMINOR=%d\n",
- prefix, major(statbuf.st_dev),
- prefix, minor(statbuf.st_dev));
- } else
- printf("%d:%d\n", major(statbuf.st_dev), minor(statbuf.st_dev));
- return 0;
+ struct stat statbuf;
+
+ if (stat(name, &statbuf) != 0)
+ return -1;
+
+ if (export) {
+ if (prefix == NULL)
+ prefix = "INFO_";
+ printf("%sMAJOR=%d\n"
+ "%sMINOR=%d\n",
+ prefix, major(statbuf.st_dev),
+ prefix, minor(statbuf.st_dev));
+ } else
+ printf("%d:%d\n", major(statbuf.st_dev), minor(statbuf.st_dev));
+ return 0;
}
static int export_devices(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) {
- print_record(device);
- udev_device_unref(device);
- }
- }
- udev_enumerate_unref(udev_enumerate);
- return 0;
+ 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) {
+ print_record(device);
+ udev_device_unref(device);
+ }
+ }
+ udev_enumerate_unref(udev_enumerate);
+ return 0;
}
static void cleanup_dir(DIR *dir, mode_t mask, int depth)
{
- struct dirent *dent;
-
- if (depth <= 0)
- return;
-
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- struct stat stats;
-
- if (dent->d_name[0] == '.')
- continue;
- if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) != 0)
- continue;
- if ((stats.st_mode & mask) != 0)
- continue;
- if (S_ISDIR(stats.st_mode)) {
- DIR *dir2;
-
- dir2 = fdopendir(openat(dirfd(dir), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC));
- if (dir2 != NULL) {
- cleanup_dir(dir2, mask, depth-1);
- closedir(dir2);
- }
- unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR);
- } else {
- unlinkat(dirfd(dir), dent->d_name, 0);
- }
- }
+ struct dirent *dent;
+
+ if (depth <= 0)
+ return;
+
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ struct stat stats;
+
+ if (dent->d_name[0] == '.')
+ continue;
+ if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) != 0)
+ continue;
+ if ((stats.st_mode & mask) != 0)
+ continue;
+ if (S_ISDIR(stats.st_mode)) {
+ DIR *dir2;
+
+ dir2 = fdopendir(openat(dirfd(dir), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC));
+ if (dir2 != NULL) {
+ cleanup_dir(dir2, mask, depth-1);
+ closedir(dir2);
+ }
+ unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR);
+ } else {
+ unlinkat(dirfd(dir), dent->d_name, 0);
+ }
+ }
}
static void cleanup_db(struct udev *udev)
{
- char filename[UTIL_PATH_SIZE];
- DIR *dir;
-
- util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/queue.bin", NULL);
- unlink(filename);
-
- util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data", NULL);
- dir = opendir(filename);
- if (dir != NULL) {
- cleanup_dir(dir, S_ISVTX, 1);
- closedir(dir);
- }
-
- util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/links", NULL);
- dir = opendir(filename);
- if (dir != NULL) {
- cleanup_dir(dir, 0, 2);
- closedir(dir);
- }
-
- util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/tags", NULL);
- dir = opendir(filename);
- if (dir != NULL) {
- cleanup_dir(dir, 0, 2);
- closedir(dir);
- }
-
- util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/watch", NULL);
- dir = opendir(filename);
- if (dir != NULL) {
- cleanup_dir(dir, 0, 1);
- closedir(dir);
- }
-
- util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/firmware-missing", NULL);
- dir = opendir(filename);
- if (dir != NULL) {
- cleanup_dir(dir, 0, 1);
- closedir(dir);
- }
+ char filename[UTIL_PATH_SIZE];
+ DIR *dir;
+
+ util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/queue.bin", NULL);
+ unlink(filename);
+
+ util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data", NULL);
+ dir = opendir(filename);
+ if (dir != NULL) {
+ cleanup_dir(dir, S_ISVTX, 1);
+ closedir(dir);
+ }
+
+ util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/links", NULL);
+ dir = opendir(filename);
+ if (dir != NULL) {
+ cleanup_dir(dir, 0, 2);
+ closedir(dir);
+ }
+
+ util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/tags", NULL);
+ dir = opendir(filename);
+ if (dir != NULL) {
+ cleanup_dir(dir, 0, 2);
+ closedir(dir);
+ }
+
+ util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/watch", NULL);
+ dir = opendir(filename);
+ if (dir != NULL) {
+ cleanup_dir(dir, 0, 1);
+ closedir(dir);
+ }
+
+ util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/firmware-missing", NULL);
+ dir = opendir(filename);
+ if (dir != NULL) {
+ cleanup_dir(dir, 0, 1);
+ closedir(dir);
+ }
}
static int uinfo(struct udev *udev, int argc, char *argv[])
{
- struct udev_device *device = NULL;
- bool root = 0;
- bool export = 0;
- const char *export_prefix = NULL;
- char path[UTIL_PATH_SIZE];
- char name[UTIL_PATH_SIZE];
- struct udev_list_entry *list_entry;
- int rc = 0;
-
- static const struct option options[] = {
- { "name", required_argument, NULL, 'n' },
- { "path", required_argument, NULL, 'p' },
- { "query", required_argument, NULL, 'q' },
- { "attribute-walk", no_argument, NULL, 'a' },
- { "cleanup-db", no_argument, NULL, 'c' },
- { "export-db", no_argument, NULL, 'e' },
- { "root", no_argument, NULL, 'r' },
- { "run", no_argument, NULL, 'R' },
- { "device-id-of-file", required_argument, NULL, 'd' },
- { "export", no_argument, NULL, 'x' },
- { "export-prefix", required_argument, NULL, 'P' },
- { "version", no_argument, NULL, 'V' },
- { "help", no_argument, NULL, 'h' },
- {}
- };
-
- enum action_type {
- ACTION_NONE,
- ACTION_QUERY,
- ACTION_ATTRIBUTE_WALK,
- ACTION_ROOT,
- ACTION_DEVICE_ID_FILE,
- } action = ACTION_NONE;
-
- enum query_type {
- QUERY_NONE,
- QUERY_NAME,
- QUERY_PATH,
- QUERY_SYMLINK,
- QUERY_PROPERTY,
- QUERY_ALL,
- } query = QUERY_NONE;
-
- for (;;) {
- int option;
- struct stat statbuf;
-
- option = getopt_long(argc, argv, "aced:n:p:q:rxP:RVh", options, NULL);
- if (option == -1)
- break;
-
- dbg(udev, "option '%c'\n", option);
- switch (option) {
- case 'n':
- if (device != NULL) {
- fprintf(stderr, "device already specified\n");
- rc = 2;
- goto exit;
- }
- /* remove /dev if given */
- 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");
- rc = 2;
- goto exit;
- } else {
- char type;
-
- if (S_ISBLK(statbuf.st_mode)) {
- type = 'b';
- } else if (S_ISCHR(statbuf.st_mode)) {
- type = 'c';
- } else {
- fprintf(stderr, "device node has wrong file type\n");
- rc = 2;
- goto exit;
- }
- device = udev_device_new_from_devnum(udev, type, statbuf.st_rdev);
- if (device == NULL) {
- fprintf(stderr, "device node not found\n");
- rc = 2;
- goto exit;
- }
- }
- break;
- case 'p':
- if (device != NULL) {
- fprintf(stderr, "device already specified\n");
- rc = 2;
- goto exit;
- }
- /* add sys dir if needed */
- 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) {
- fprintf(stderr, "device path not found\n");
- rc = 2;
- goto exit;
- }
- break;
- case 'q':
- action = ACTION_QUERY;
- if (strcmp(optarg, "property") == 0 || strcmp(optarg, "env") == 0) {
- query = QUERY_PROPERTY;
- } else if (strcmp(optarg, "name") == 0) {
- query = QUERY_NAME;
- } else if (strcmp(optarg, "symlink") == 0) {
- query = QUERY_SYMLINK;
- } else if (strcmp(optarg, "path") == 0) {
- query = QUERY_PATH;
- } else if (strcmp(optarg, "all") == 0) {
- query = QUERY_ALL;
- } else {
- fprintf(stderr, "unknown query type\n");
- rc = 3;
- goto exit;
- }
- break;
- case 'r':
- if (action == ACTION_NONE)
- action = ACTION_ROOT;
- root = true;
- break;
- case 'R':
- printf("%s\n", udev_get_run_path(udev));
- goto exit;
- case 'd':
- action = ACTION_DEVICE_ID_FILE;
- util_strscpy(name, sizeof(name), optarg);
- break;
- case 'a':
- action = ACTION_ATTRIBUTE_WALK;
- break;
- case 'e':
- export_devices(udev);
- goto exit;
- case 'c':
- cleanup_db(udev);
- goto exit;
- case 'x':
- export = true;
- break;
- case 'P':
- export_prefix = optarg;
- break;
- case 'V':
- printf("%s\n", VERSION);
- goto exit;
- case 'h':
- printf("Usage: udevadm info OPTIONS\n"
- " --query=<type> query device information:\n"
- " name name of device node\n"
- " symlink pointing to node\n"
- " path sys device path\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"
- " --root prepend dev directory to path names\n"
- " --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"
- " --cleanup-db cleanup the udev database\n"
- " --help\n\n");
- goto exit;
- default:
- rc = 1;
- goto exit;
- }
- }
-
- switch (action) {
- case ACTION_QUERY:
- if (device == NULL) {
- fprintf(stderr, "query needs a valid device specified by --path= or --name=\n");
- rc = 4;
- goto exit;
- }
-
- switch(query) {
- 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 = 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) {
- if (root) {
- printf("%s", udev_list_entry_get_name(list_entry));
- } else {
- size_t len;
-
- len = strlen(udev_get_dev_path(udev_device_get_udev(device)));
- printf("%s", &udev_list_entry_get_name(list_entry)[len+1]);
- }
- list_entry = udev_list_entry_get_next(list_entry);
- if (list_entry != NULL)
- printf(" ");
- }
- printf("\n");
- break;
- case QUERY_PATH:
- printf("%s\n", udev_device_get_devpath(device));
- goto exit;
- case QUERY_PROPERTY:
- list_entry = udev_device_get_properties_list_entry(device);
- while (list_entry != NULL) {
- 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;
- case QUERY_ALL:
- print_record(device);
- break;
- default:
- fprintf(stderr, "unknown query type\n");
- break;
- }
- break;
- case ACTION_ATTRIBUTE_WALK:
- if (device == NULL) {
- fprintf(stderr, "query needs a valid device specified by --path= or --name=\n");
- rc = 4;
- goto exit;
- }
- print_device_chain(device);
- break;
- case ACTION_DEVICE_ID_FILE:
- if (stat_device(name, export, export_prefix) != 0)
- rc = 1;
- break;
- case ACTION_ROOT:
- printf("%s\n", udev_get_dev_path(udev));
- break;
- default:
- fprintf(stderr, "missing option\n");
- rc = 1;
- break;
- }
+ struct udev_device *device = NULL;
+ bool root = 0;
+ bool export = 0;
+ const char *export_prefix = NULL;
+ char path[UTIL_PATH_SIZE];
+ char name[UTIL_PATH_SIZE];
+ struct udev_list_entry *list_entry;
+ int rc = 0;
+
+ static const struct option options[] = {
+ { "name", required_argument, NULL, 'n' },
+ { "path", required_argument, NULL, 'p' },
+ { "query", required_argument, NULL, 'q' },
+ { "attribute-walk", no_argument, NULL, 'a' },
+ { "cleanup-db", no_argument, NULL, 'c' },
+ { "export-db", no_argument, NULL, 'e' },
+ { "root", no_argument, NULL, 'r' },
+ { "run", no_argument, NULL, 'R' },
+ { "device-id-of-file", required_argument, NULL, 'd' },
+ { "export", no_argument, NULL, 'x' },
+ { "export-prefix", required_argument, NULL, 'P' },
+ { "version", no_argument, NULL, 'V' },
+ { "help", no_argument, NULL, 'h' },
+ {}
+ };
+
+ enum action_type {
+ ACTION_NONE,
+ ACTION_QUERY,
+ ACTION_ATTRIBUTE_WALK,
+ ACTION_ROOT,
+ ACTION_DEVICE_ID_FILE,
+ } action = ACTION_NONE;
+
+ enum query_type {
+ QUERY_NONE,
+ QUERY_NAME,
+ QUERY_PATH,
+ QUERY_SYMLINK,
+ QUERY_PROPERTY,
+ QUERY_ALL,
+ } query = QUERY_NONE;
+
+ for (;;) {
+ int option;
+ struct stat statbuf;
+
+ option = getopt_long(argc, argv, "aced:n:p:q:rxP:RVh", options, NULL);
+ if (option == -1)
+ break;
+
+ dbg(udev, "option '%c'\n", option);
+ switch (option) {
+ case 'n':
+ if (device != NULL) {
+ fprintf(stderr, "device already specified\n");
+ rc = 2;
+ goto exit;
+ }
+ /* remove /dev if given */
+ 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");
+ rc = 2;
+ goto exit;
+ } else {
+ char type;
+
+ if (S_ISBLK(statbuf.st_mode)) {
+ type = 'b';
+ } else if (S_ISCHR(statbuf.st_mode)) {
+ type = 'c';
+ } else {
+ fprintf(stderr, "device node has wrong file type\n");
+ rc = 2;
+ goto exit;
+ }
+ device = udev_device_new_from_devnum(udev, type, statbuf.st_rdev);
+ if (device == NULL) {
+ fprintf(stderr, "device node not found\n");
+ rc = 2;
+ goto exit;
+ }
+ }
+ break;
+ case 'p':
+ if (device != NULL) {
+ fprintf(stderr, "device already specified\n");
+ rc = 2;
+ goto exit;
+ }
+ /* add sys dir if needed */
+ 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) {
+ fprintf(stderr, "device path not found\n");
+ rc = 2;
+ goto exit;
+ }
+ break;
+ case 'q':
+ action = ACTION_QUERY;
+ if (strcmp(optarg, "property") == 0 || strcmp(optarg, "env") == 0) {
+ query = QUERY_PROPERTY;
+ } else if (strcmp(optarg, "name") == 0) {
+ query = QUERY_NAME;
+ } else if (strcmp(optarg, "symlink") == 0) {
+ query = QUERY_SYMLINK;
+ } else if (strcmp(optarg, "path") == 0) {
+ query = QUERY_PATH;
+ } else if (strcmp(optarg, "all") == 0) {
+ query = QUERY_ALL;
+ } else {
+ fprintf(stderr, "unknown query type\n");
+ rc = 3;
+ goto exit;
+ }
+ break;
+ case 'r':
+ if (action == ACTION_NONE)
+ action = ACTION_ROOT;
+ root = true;
+ break;
+ case 'R':
+ printf("%s\n", udev_get_run_path(udev));
+ goto exit;
+ case 'd':
+ action = ACTION_DEVICE_ID_FILE;
+ util_strscpy(name, sizeof(name), optarg);
+ break;
+ case 'a':
+ action = ACTION_ATTRIBUTE_WALK;
+ break;
+ case 'e':
+ export_devices(udev);
+ goto exit;
+ case 'c':
+ cleanup_db(udev);
+ goto exit;
+ case 'x':
+ export = true;
+ break;
+ case 'P':
+ export_prefix = optarg;
+ break;
+ case 'V':
+ printf("%s\n", VERSION);
+ goto exit;
+ case 'h':
+ printf("Usage: udevadm info OPTIONS\n"
+ " --query=<type> query device information:\n"
+ " name name of device node\n"
+ " symlink pointing to node\n"
+ " path sys device path\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"
+ " --root prepend dev directory to path names\n"
+ " --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"
+ " --cleanup-db cleanup the udev database\n"
+ " --help\n\n");
+ goto exit;
+ default:
+ rc = 1;
+ goto exit;
+ }
+ }
+
+ switch (action) {
+ case ACTION_QUERY:
+ if (device == NULL) {
+ fprintf(stderr, "query needs a valid device specified by --path= or --name=\n");
+ rc = 4;
+ goto exit;
+ }
+
+ switch(query) {
+ 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 = 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) {
+ if (root) {
+ printf("%s", udev_list_entry_get_name(list_entry));
+ } else {
+ size_t len;
+
+ len = strlen(udev_get_dev_path(udev_device_get_udev(device)));
+ printf("%s", &udev_list_entry_get_name(list_entry)[len+1]);
+ }
+ list_entry = udev_list_entry_get_next(list_entry);
+ if (list_entry != NULL)
+ printf(" ");
+ }
+ printf("\n");
+ break;
+ case QUERY_PATH:
+ printf("%s\n", udev_device_get_devpath(device));
+ goto exit;
+ case QUERY_PROPERTY:
+ list_entry = udev_device_get_properties_list_entry(device);
+ while (list_entry != NULL) {
+ 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;
+ case QUERY_ALL:
+ print_record(device);
+ break;
+ default:
+ fprintf(stderr, "unknown query type\n");
+ break;
+ }
+ break;
+ case ACTION_ATTRIBUTE_WALK:
+ if (device == NULL) {
+ fprintf(stderr, "query needs a valid device specified by --path= or --name=\n");
+ rc = 4;
+ goto exit;
+ }
+ print_device_chain(device);
+ break;
+ case ACTION_DEVICE_ID_FILE:
+ if (stat_device(name, export, export_prefix) != 0)
+ rc = 1;
+ break;
+ case ACTION_ROOT:
+ printf("%s\n", udev_get_dev_path(udev));
+ break;
+ default:
+ fprintf(stderr, "missing option\n");
+ rc = 1;
+ break;
+ }
exit:
- udev_device_unref(device);
- return rc;
+ udev_device_unref(device);
+ return rc;
}
const struct udevadm_cmd udevadm_info = {
- .name = "info",
- .cmd = uinfo,
- .help = "query sysfs or the udev database",
+ .name = "info",
+ .cmd = uinfo,
+ .help = "query sysfs or the udev database",
};
~ianmdlvl / elogind.git / blobdiff