X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Fudevadm-info.c;h=f7e7e86b6a4a8f43cf9207b85f4176ab4874191c;hp=b395ad93b65c581405b8fbc56b2f83cef41a192a;hb=2fdaa983a958822d79821c1afe51e22e7a3e00ff;hpb=e7964b93e826274d0e92d58e458decb49e502bf5

diff --git a/udev/udevadm-info.c b/udev/udevadm-info.c
index b395ad93b..f7e7e86b6 100644
--- a/udev/udevadm-info.c
+++ b/udev/udevadm-info.c
@@ -31,49 +31,58 @@
 
 #include "udev.h"
 
-static void print_all_attributes(struct udev_device *device, const char *key)
+static bool skip_attribute(const char *name)
 {
-	struct udev *udev = udev_device_get_udev(device);
-	DIR *dir;
-	struct dirent *dent;
+	static const char const *skip[] = {
+		"uevent",
+		"dev",
+		"modalias",
+		"resource",
+		"driver",
+		"subsystem",
+		"module",
+	};
+	unsigned int i;
 
-	dir = opendir(udev_device_get_syspath(device));
-	if (dir != NULL) {
-		for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
-			struct stat statbuf;
-			const char *value;
-			size_t len;
-
-			if (dent->d_name[0] == '.')
-				continue;
-
-			if (strcmp(dent->d_name, "uevent") == 0)
-				continue;
-			if (strcmp(dent->d_name, "dev") == 0)
-				continue;
-
-			if (fstatat(dirfd(dir), dent->d_name, &statbuf, AT_SYMLINK_NOFOLLOW) != 0)
-				continue;
-			if (S_ISLNK(statbuf.st_mode))
-				continue;
-
-			value = udev_device_get_sysattr_value(device, dent->d_name);
-			if (value == NULL)
-				continue;
-			dbg(udev, "attr '%s'='%s'\n", dent->d_name, value);
-
-			/* 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", dent->d_name);
-				continue;
-			}
+	for (i = 0; i < ARRAY_SIZE(skip); i++)
+		if (strcmp(name, skip[i]) == 0)
+			return true;
+	return false;
+}
 
-			printf("    %s{%s}==\"%s\"\n", key, dent->d_name, value);
+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;
 		}
-		closedir(dir);
+
+		printf("    %s{%s}==\"%s\"\n", key, name, value);
 	}
 	printf("\n");
 }
@@ -154,7 +163,7 @@ 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;
 
@@ -195,11 +204,86 @@ static int export_devices(struct udev *udev)
 	return 0;
 }
 
-int udevadm_info(struct udev *udev, int argc, char *argv[])
+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);
+		}
+	}
+}
+
+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);
+	}
+}
+
+static int uinfo(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];
@@ -211,8 +295,10 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
 		{ "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' },
@@ -238,11 +324,11 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
 		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, "aced:n:p:q:rxP:RVh", options, NULL);
 		if (option == -1)
 			break;
 
@@ -324,8 +410,11 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
 		case 'r':
 			if (action == ACTION_NONE)
 				action = ACTION_ROOT;
-			root = 1;
+			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);
@@ -336,8 +425,11 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
 		case 'e':
 			export_devices(udev);
 			goto exit;
+		case 'c':
+			cleanup_db(udev);
+			goto exit;
 		case 'x':
-			export = 1;
+			export = true;
 			break;
 		case 'P':
 			export_prefix = optarg;
@@ -359,10 +451,14 @@ 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"
+			       "  --cleanup-db               cleanup the udev database\n"
 			       "  --help\n\n");
 			goto exit;
 		default:
+			rc = 1;
 			goto exit;
 		}
 	}
@@ -417,7 +513,17 @@ int udevadm_info(struct udev *udev, int argc, char *argv[])
 		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;
@@ -454,3 +560,9 @@ exit:
 	udev_device_unref(device);
 	return rc;
 }
+
+const struct udevadm_cmd udevadm_info = {
+	.name = "info",
+	.cmd = uinfo,
+	.help = "query sysfs or the udev database",
+};