delete all Makefiles and move udev source to udev/

1 files changed, 500 insertions, 0 deletions

diff --git a/udev/udevinfo.c b/udev/udevinfo.c
new file mode 100644
index 0000000000..b9ee17c4f1
--- /dev/null
+++ b/udev/udevinfo.c
@@ -0,0 +1,500 @@
+/*
+ * Copyright (C) 2004-2006 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 the
+ *	Free Software Foundation version 2 of the License.
+ * 
+ *	This program is distributed in the hope that it will be useful, but
+ *	WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *	General Public License for more details.
+ * 
+ *	You should have received a copy of the GNU General Public License along
+ *	with this program; if not, write to the Free Software Foundation, Inc.,
+ *	51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <ctype.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <errno.h>
+#include <getopt.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "udev.h"
+
+static void print_all_attributes(const char *devpath, const char *key)
+{
+	char path[PATH_SIZE];
+	DIR *dir;
+	struct dirent *dent;
+
+	strlcpy(path, sysfs_path, sizeof(path));
+	strlcat(path, devpath, sizeof(path));
+
+	dir = opendir(path);
+	if (dir != NULL) {
+		for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+			struct stat statbuf;
+			char filename[PATH_SIZE];
+			char *attr_value;
+			char value[NAME_SIZE];
+			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;
+
+			strlcpy(filename, path, sizeof(filename));
+			strlcat(filename, "/", sizeof(filename));
+			strlcat(filename, dent->d_name, sizeof(filename));
+			if (lstat(filename, &statbuf) != 0)
+				continue;
+			if (S_ISLNK(statbuf.st_mode))
+				continue;
+
+			attr_value = sysfs_attr_get_value(devpath, dent->d_name);
+			if (attr_value == NULL)
+				continue;
+			len = strlcpy(value, attr_value, sizeof(value));
+			if(len >= sizeof(value))
+				len = sizeof(value) - 1;
+			dbg("attr '%s'='%s'(%zi)\n", dent->d_name, value, len);
+
+			/* remove trailing newlines */
+			while (len && value[len-1] == '\n')
+				value[--len] = '\0';
+
+			/* skip nonprintable attributes */
+			while (len && isprint(value[len-1]))
+				len--;
+			if (len) {
+				dbg("attribute value of '%s' non-printable, skip\n", dent->d_name);
+				continue;
+			}
+
+			printf("    %s{%s}==\"%s\"\n", key, dent->d_name, value);
+		}
+	}
+	printf("\n");
+}
+
+static int print_device_chain(const char *devpath)
+{
+	struct sysfs_device *dev;
+
+	dev = sysfs_device_get(devpath);
+	if (dev == NULL)
+		return -1;
+
+	printf("\n"
+	       "Udevinfo 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", dev->devpath);
+	printf("    KERNEL==\"%s\"\n", dev->kernel);
+	printf("    SUBSYSTEM==\"%s\"\n", dev->subsystem);
+	printf("    DRIVER==\"%s\"\n", dev->driver);
+	print_all_attributes(dev->devpath, "ATTR");
+
+	/* walk up the chain of devices */
+	while (1) {
+		dev = sysfs_device_get_parent(dev);
+		if (dev == NULL)
+			break;
+		printf("  looking at parent device '%s':\n", dev->devpath);
+		printf("    KERNELS==\"%s\"\n", dev->kernel);
+		printf("    SUBSYSTEMS==\"%s\"\n", dev->subsystem);
+		printf("    DRIVERS==\"%s\"\n", dev->driver);
+
+		print_all_attributes(dev->devpath, "ATTRS");
+	}
+
+	return 0;
+}
+
+static void print_record(struct udevice *udev)
+{
+	struct name_entry *name_loop;
+
+	printf("P: %s\n", udev->dev->devpath);
+	printf("N: %s\n", udev->name);
+	list_for_each_entry(name_loop, &udev->symlink_list, node)
+		printf("S: %s\n", name_loop->name);
+	if (udev->link_priority != 0)
+		printf("L: %i\n", udev->link_priority);
+	if (udev->partitions != 0)
+		printf("A:%u\n", udev->partitions);
+	if (udev->ignore_remove)
+		printf("R:%u\n", udev->ignore_remove);
+	list_for_each_entry(name_loop, &udev->env_list, node)
+		printf("E: %s\n", name_loop->name);
+}
+
+static void export_db(void) {
+	LIST_HEAD(name_list);
+	struct name_entry *name_loop;
+
+	udev_db_get_all_entries(&name_list);
+	list_for_each_entry(name_loop, &name_list, node) {
+		struct udevice *udev_db;
+
+		udev_db = udev_device_init(NULL);
+		if (udev_db == NULL)
+			continue;
+		if (udev_db_get_device(udev_db, name_loop->name) == 0)
+			print_record(udev_db);
+			printf("\n");
+		udev_device_cleanup(udev_db);
+	}
+	name_list_cleanup(&name_list);
+}
+
+static int lookup_device_by_name(struct udevice *udev, const char *name)
+{
+	LIST_HEAD(name_list);
+	int count;
+	struct name_entry *device;
+	int rc  = -1;
+
+	count = udev_db_get_devices_by_name(name, &name_list);
+	if (count <= 0)
+		goto out;
+
+	info("found %i devices for '%s'\n", count, name);
+
+	/* select the device that seems to match */
+	list_for_each_entry(device, &name_list, node) {
+		char filename[PATH_SIZE];
+		struct stat statbuf;
+
+		udev_device_init(udev);
+		if (udev_db_get_device(udev, device->name) != 0)
+			continue;
+		info("found db entry '%s'\n", device->name);
+
+		/* make sure, we don't get a link of a differnt device */
+		strlcpy(filename, udev_root, sizeof(filename));
+		strlcat(filename, "/", sizeof(filename));
+		strlcat(filename, name, sizeof(filename));
+		if (stat(filename, &statbuf) != 0)
+			continue;
+		if (major(udev->devt) > 0 && udev->devt != statbuf.st_rdev) {
+			info("skip '%s', dev_t doesn't match\n", udev->name);
+			continue;
+		}
+		rc = 0;
+		break;
+	}
+out:
+	name_list_cleanup(&name_list);
+	return rc;
+}
+
+static int stat_device(const char *name, int 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;
+}
+
+int udevinfo(int argc, char *argv[], char *envp[])
+{
+	int option;
+	struct udevice *udev;
+	int root = 0;
+	int export = 0;
+	const char *export_prefix = NULL;
+
+	static const struct option options[] = {
+		{ "name", 1, NULL, 'n' },
+		{ "path", 1, NULL, 'p' },
+		{ "query", 1, NULL, 'q' },
+		{ "attribute-walk", 0, NULL, 'a' },
+		{ "export-db", 0, NULL, 'e' },
+		{ "root", 0, NULL, 'r' },
+		{ "device-id-of-file", 1, NULL, 'd' },
+		{ "export", 0, NULL, 'x' },
+		{ "export-prefix", 1, NULL, 'P' },
+		{ "version", 0, NULL, 1 }, /* -V outputs braindead format */
+		{ "help", 0, 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_ENV,
+		QUERY_ALL,
+	} query = QUERY_NONE;
+
+	char path[PATH_SIZE] = "";
+	char name[PATH_SIZE] = "";
+	struct name_entry *name_loop;
+	int rc = 0;
+
+	logging_init("udevinfo");
+	udev_config_init();
+	sysfs_init();
+
+	udev = udev_device_init(NULL);
+	if (udev == NULL) {
+		rc = 1;
+		goto exit;
+	}
+
+	while (1) {
+		option = getopt_long(argc, argv, "aed:n:p:q:rxPVh", options, NULL);
+		if (option == -1)
+			break;
+
+		dbg("option '%c'\n", option);
+		switch (option) {
+		case 'n':
+			/* remove /dev if given */
+			if (strncmp(optarg, udev_root, strlen(udev_root)) == 0)
+				strlcpy(name, &optarg[strlen(udev_root)+1], sizeof(name));
+			else
+				strlcpy(name, optarg, sizeof(name));
+			remove_trailing_chars(name, '/');
+			dbg("name: %s\n", name);
+			break;
+		case 'p':
+			/* remove /sys if given */
+			if (strncmp(optarg, sysfs_path, strlen(sysfs_path)) == 0)
+				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\n", path);
+			break;
+		case 'q':
+			action = ACTION_QUERY;
+			if (strcmp(optarg, "name") == 0) {
+				query = QUERY_NAME;
+				break;
+			}
+			if (strcmp(optarg, "symlink") == 0) {
+				query = QUERY_SYMLINK;
+				break;
+			}
+			if (strcmp(optarg, "path") == 0) {
+				query = QUERY_PATH;
+				break;
+			}
+			if (strcmp(optarg, "env") == 0) {
+				query = QUERY_ENV;
+				break;
+			}
+			if (strcmp(optarg, "all") == 0) {
+				query = QUERY_ALL;
+				break;
+			}
+			fprintf(stderr, "unknown query type\n");
+			rc = 2;
+			goto exit;
+		case 'r':
+			if (action == ACTION_NONE)
+				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;
+		case 'e':
+			export_db();
+			goto exit;
+		case 'x':
+			export = 1;
+			break;
+		case 'P':
+			export_prefix = optarg;
+			break;
+		case 1:
+			printf("%s\n", UDEV_VERSION);
+			goto exit;
+		case 'V':
+			printf("udevinfo, version %s\n", UDEV_VERSION);
+			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"
+			       "  --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;
+		}
+	}
+
+	/* run action */
+	switch (action) {
+	case ACTION_QUERY:
+		/* needs devpath or node/symlink name for query */
+		if (path[0] != '\0') {
+			if (udev_db_get_device(udev, path) != 0) {
+				fprintf(stderr, "no record for '%s' in database\n", path);
+				rc = 3;
+				goto exit;
+			}
+		} else if (name[0] != '\0') {
+			if (lookup_device_by_name(udev, name) != 0) {
+				fprintf(stderr, "node name not found\n");
+				rc = 4;
+				goto exit;
+			}
+		} else {
+			fprintf(stderr, "query needs --path or node --name specified\n");
+			rc = 4;
+			goto exit;
+		}
+
+		switch(query) {
+		case QUERY_NAME:
+			if (root)
+				printf("%s/%s\n", udev_root, udev->name);
+			else
+				printf("%s\n", udev->name);
+			break;
+		case QUERY_SYMLINK:
+			list_for_each_entry(name_loop, &udev->symlink_list, node) {
+				char c = name_loop->node.next != &udev->symlink_list ? ' ' : '\n';
+
+				if (root)
+					printf("%s/%s%c", udev_root, name_loop->name, c);
+				else
+					printf("%s%c", name_loop->name, c);
+			}
+			break;
+		case QUERY_PATH:
+			printf("%s\n", udev->dev->devpath);
+			goto exit;
+		case QUERY_ENV:
+			list_for_each_entry(name_loop, &udev->env_list, node)
+				printf("%s\n", name_loop->name);
+			break;
+		case QUERY_ALL:
+			print_record(udev);
+			break;
+		default:
+			fprintf(stderr, "unknown query type\n");
+			break;
+		}
+		break;
+	case ACTION_ATTRIBUTE_WALK:
+		if (path[0] != '\0') {
+			if (print_device_chain(path) != 0) {
+				fprintf(stderr, "no valid sysfs device found\n");
+				rc = 4;
+				goto exit;
+			}
+		} else if (name[0] != '\0') {
+			if (lookup_device_by_name(udev, name) != 0) {
+				fprintf(stderr, "node name not found\n");
+				rc = 4;
+				goto exit;
+			}
+			if (print_device_chain(udev->dev->devpath) != 0) {
+				fprintf(stderr, "no valid sysfs device found\n");
+				rc = 4;
+				goto exit;
+			}
+		} else {
+			fprintf(stderr, "attribute walk needs --path or node --name specified\n");
+			rc = 5;
+			goto exit;
+		}
+		break;
+	case ACTION_DEVICE_ID_FILE:
+		if (stat_device(name, export, export_prefix) != 0)
+			rc = 6;
+		break;
+	case ACTION_ROOT:
+		printf("%s\n", udev_root);
+		break;
+	default:
+		fprintf(stderr, "missing option\n");
+		rc = 1;
+		break;
+	}
+
+exit:
+	udev_device_cleanup(udev);
+	sysfs_cleanup();
+	logging_close();
+	return rc;
+}