rename udev source files

1 files changed, 0 insertions, 525 deletions

diff --git a/udev/udev_node.c b/udev/udev_node.c
deleted file mode 100644
index 425764242a..0000000000
--- a/udev/udev_node.c
+++ /dev/null
@@ -1,525 +0,0 @@
-/*
- * Copyright (C) 2004-2008 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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <stddef.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-#include <grp.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include "udev.h"
-#include "udev_rules.h"
-
-#define TMP_FILE_EXT		".udev-tmp"
-
-/* reverse mapping from the device file name to the devpath */
-static int name_index(struct udev *udev, const char *devpath, const char *name, int add, int test)
-{
-	char device[UTIL_PATH_SIZE];
-	char filename[UTIL_PATH_SIZE * 2];
-	size_t devlen = strlen(udev_get_dev_path(udev))+1;
-	size_t start;
-	int fd;
-
-	/* directory with device name */
-	util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
-	start = util_strlcat(filename, "/.udev/names/", sizeof(filename));
-	util_strlcat(filename, &name[devlen], sizeof(filename));
-	util_path_encode(&filename[start], sizeof(filename) - start);
-	/* entry with the devpath */
-	util_strlcpy(device, devpath, sizeof(device));
-	util_path_encode(device, sizeof(device));
-	util_strlcat(filename, "/", sizeof(filename));
-	util_strlcat(filename, device, sizeof(filename));
-
-	if (add) {
-		info(udev, "creating index: '%s'\n", filename);
-		create_path(udev, filename);
-		fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0644);
-		if (fd > 0)
-			close(fd);
-	} else {
-		info(udev, "removing index: '%s'\n", filename);
-		unlink(filename);
-		delete_path(udev, filename);
-	}
-	return 0;
-}
-
-int udev_node_mknod(struct udev_device *dev, const char *file, dev_t devnum, mode_t mode, uid_t uid, gid_t gid)
-{
-	struct udev *udev = udev_device_get_udev(dev);
-	char file_tmp[UTIL_PATH_SIZE + sizeof(TMP_FILE_EXT)];
-	struct stat stats;
-	int preserve = 0;
-	int err = 0;
-
-	if (major(devnum) == 0)
-		devnum = udev_device_get_devnum(dev);
-
-	if (strcmp(udev_device_get_subsystem(dev), "block") == 0)
-		mode |= S_IFBLK;
-	else
-		mode |= S_IFCHR;
-
-	if (file == NULL)
-		file = udev_device_get_devnode(dev);
-
-	if (lstat(file, &stats) == 0) {
-		if (((stats.st_mode & S_IFMT) == (mode & S_IFMT)) && (stats.st_rdev == devnum)) {
-			info(udev, "preserve file '%s', because it has correct dev_t\n", file);
-			preserve = 1;
-			udev_selinux_lsetfilecon(udev, file, mode);
-		} else {
-			info(udev, "atomically replace existing file '%s'\n", file);
-			util_strlcpy(file_tmp, file, sizeof(file_tmp));
-			util_strlcat(file_tmp, TMP_FILE_EXT, sizeof(file_tmp));
-			unlink(file_tmp);
-			udev_selinux_setfscreatecon(udev, file_tmp, mode);
-			err = mknod(file_tmp, mode, devnum);
-			udev_selinux_resetfscreatecon(udev);
-			if (err != 0) {
-				err(udev, "mknod(%s, %#o, %u, %u) failed: %m\n",
-				    file_tmp, mode, major(devnum), minor(devnum));
-				goto exit;
-			}
-			err = rename(file_tmp, file);
-			if (err != 0) {
-				err(udev, "rename(%s, %s) failed: %m\n", file_tmp, file);
-				unlink(file_tmp);
-			}
-		}
-	} else {
-		info(udev, "mknod(%s, %#o, (%u,%u))\n", file, mode, major(devnum), minor(devnum));
-		udev_selinux_setfscreatecon(udev, file, mode);
-		err = mknod(file, mode, devnum);
-		udev_selinux_resetfscreatecon(udev);
-		if (err != 0) {
-			err(udev, "mknod(%s, %#o, (%u,%u) failed: %m\n", file, mode, major(devnum), minor(devnum));
-			goto exit;
-		}
-	}
-
-	if (!preserve || stats.st_mode != mode) {
-		info(udev, "chmod(%s, %#o)\n", file, mode);
-		err = chmod(file, mode);
-		if (err != 0) {
-			err(udev, "chmod(%s, %#o) failed: %m\n", file, mode);
-			goto exit;
-		}
-	}
-
-	if (!preserve || stats.st_uid != uid || stats.st_gid != gid) {
-		info(udev, "chown(%s, %u, %u)\n", file, uid, gid);
-		err = chown(file, uid, gid);
-		if (err != 0) {
-			err(udev, "chown(%s, %u, %u) failed: %m\n", file, uid, gid);
-			goto exit;
-		}
-	}
-exit:
-	return err;
-}
-
-static int node_symlink(struct udev *udev, const char *node, const char *slink)
-{
-	struct stat stats;
-	char target[UTIL_PATH_SIZE] = "";
-	char slink_tmp[UTIL_PATH_SIZE + sizeof(TMP_FILE_EXT)];
-	int i = 0;
-	int tail = 0;
-	int len;
-	int err = 0;
-
-	/* use relative link */
-	while (node[i] && (node[i] == slink[i])) {
-		if (node[i] == '/')
-			tail = i+1;
-		i++;
-	}
-	while (slink[i] != '\0') {
-		if (slink[i] == '/')
-			util_strlcat(target, "../", sizeof(target));
-		i++;
-	}
-	util_strlcat(target, &node[tail], sizeof(target));
-
-	/* preserve link with correct target, do not replace node of other device */
-	if (lstat(slink, &stats) == 0) {
-		if (S_ISBLK(stats.st_mode) || S_ISCHR(stats.st_mode)) {
-			struct stat stats2;
-
-			info(udev, "found existing node instead of symlink '%s'\n", slink);
-			if (lstat(node, &stats2) == 0) {
-				if ((stats.st_mode & S_IFMT) == (stats2.st_mode & S_IFMT) &&
-				    stats.st_rdev == stats2.st_rdev) {
-					info(udev, "replace device node '%s' with symlink to our node '%s'\n",
-					     slink, node);
-				} else {
-					err(udev, "device node '%s' already exists, "
-					    "link to '%s' will not overwrite it\n",
-					    slink, node);
-					goto exit;
-				}
-			}
-		} else if (S_ISLNK(stats.st_mode)) {
-			char buf[UTIL_PATH_SIZE];
-
-			info(udev, "found existing symlink '%s'\n", slink);
-			len = readlink(slink, buf, sizeof(buf));
-			if (len > 0) {
-				buf[len] = '\0';
-				if (strcmp(target, buf) == 0) {
-					info(udev, "preserve already existing symlink '%s' to '%s'\n",
-					     slink, target);
-					udev_selinux_lsetfilecon(udev, slink, S_IFLNK);
-					goto exit;
-				}
-			}
-		}
-	} else {
-		info(udev, "creating symlink '%s' to '%s'\n", slink, target);
-		udev_selinux_setfscreatecon(udev, slink, S_IFLNK);
-		err = symlink(target, slink);
-		udev_selinux_resetfscreatecon(udev);
-		if (err == 0)
-			goto exit;
-	}
-
-	info(udev, "atomically replace '%s'\n", slink);
-	util_strlcpy(slink_tmp, slink, sizeof(slink_tmp));
-	util_strlcat(slink_tmp, TMP_FILE_EXT, sizeof(slink_tmp));
-	unlink(slink_tmp);
-	udev_selinux_setfscreatecon(udev, slink, S_IFLNK);
-	err = symlink(target, slink_tmp);
-	udev_selinux_resetfscreatecon(udev);
-	if (err != 0) {
-		err(udev, "symlink(%s, %s) failed: %m\n", target, slink_tmp);
-		goto exit;
-	}
-	err = rename(slink_tmp, slink);
-	if (err != 0) {
-		err(udev, "rename(%s, %s) failed: %m\n", slink_tmp, slink);
-		unlink(slink_tmp);
-		goto exit;
-	}
-exit:
-	return err;
-}
-
-static int get_devices_by_name(struct udev *udev, const char *name, struct list_head *name_list)
-{
-	char dirname[PATH_MAX];
-	size_t devlen = strlen(udev_get_dev_path(udev))+1;
-	size_t start;
-	DIR *dir;
-	int count = 0;
-
-	util_strlcpy(dirname, udev_get_dev_path(udev), sizeof(dirname));
-	start = util_strlcat(dirname, "/.udev/names/", sizeof(dirname));
-	util_strlcat(dirname, &name[devlen], sizeof(dirname));
-	util_path_encode(&dirname[start], sizeof(dirname) - start);
-
-	dir = opendir(dirname);
-	if (dir == NULL) {
-		info(udev, "no index directory '%s': %m\n", dirname);
-		count = -1;
-		goto out;
-	}
-
-	info(udev, "found index directory '%s'\n", dirname);
-	while (1) {
-		struct dirent *ent;
-		char device[UTIL_PATH_SIZE];
-
-		ent = readdir(dir);
-		if (ent == NULL || ent->d_name[0] == '\0')
-			break;
-		if (ent->d_name[0] == '.')
-			continue;
-
-		util_strlcpy(device, udev_get_sys_path(udev), sizeof(device));
-		util_strlcat(device, ent->d_name, sizeof(device));
-		util_path_decode(device);
-		name_list_add(udev, name_list, device, 0);
-		count++;
-	}
-	closedir(dir);
-out:
-	return count;
-}
-
-static int update_link(struct udev_device *dev, const char *slink, int test)
-{
-	struct udev *udev = udev_device_get_udev(dev);
-	LIST_HEAD(name_list);
-	struct name_entry *device;
-	char target[UTIL_PATH_SIZE] = "";
-	int count;
-	int priority = 0;
-	int rc = 0;
-
-	info(udev, "update symlink '%s' of '%s'\n", slink, udev_device_get_syspath(dev));
-
-	count = get_devices_by_name(udev, slink, &name_list);
-	info(udev, "found %i devices with name '%s'\n", count, slink);
-
-	/* if we don't have a reference, delete it */
-	if (count <= 0) {
-		info(udev, "no reference left, remove '%s'\n", slink);
-		if (!test) {
-			unlink(slink);
-			delete_path(udev, slink);
-		}
-		goto out;
-	}
-
-	/* find the device with the highest priority */
-	list_for_each_entry(device, &name_list, node) {
-		struct udev_device *dev_db;
-		const char *devnode;
-
-		info(udev, "found '%s' for '%s'\n", device->name, slink);
-
-		/* did we find ourself? we win, if we have the same priority */
-		if (strcmp(udev_device_get_syspath(dev), device->name) == 0) {
-			info(udev, "compare (our own) priority of '%s' %i >= %i\n",
-			     udev_device_get_devpath(dev), udev_device_get_devlink_priority(dev), priority);
-			if (strcmp(udev_device_get_devnode(dev), slink) == 0) {
-				info(udev, "'%s' is our device node, database inconsistent, skip link update\n",
-				     udev_device_get_devnode(dev));
-			} else if (target[0] == '\0' || udev_device_get_devlink_priority(dev) >= priority) {
-				priority = udev_device_get_devlink_priority(dev);
-				util_strlcpy(target, udev_device_get_devnode(dev), sizeof(target));
-			}
-			continue;
-		}
-
-		/* another device, read priority from database */
-		dev_db = udev_device_new_from_syspath(udev, device->name);
-		if (dev_db == NULL)
-			continue;
-		devnode = udev_device_get_devnode(dev_db);
-		if (devnode != NULL) {
-			if (strcmp(devnode, slink) == 0) {
-				info(udev, "'%s' is a device node of '%s', skip link update\n",
-				     devnode, device->name);
-			} else {
-				info(udev, "compare priority of '%s' %i > %i\n",
-				     udev_device_get_devpath(dev_db),
-				     udev_device_get_devlink_priority(dev_db),
-				     priority);
-				if (target[0] == '\0' || udev_device_get_devlink_priority(dev_db) > priority) {
-					priority = udev_device_get_devlink_priority(dev_db);
-					util_strlcpy(target, devnode, sizeof(target));
-				}
-			}
-		}
-		udev_device_unref(dev_db);
-	}
-	name_list_cleanup(udev, &name_list);
-
-	if (target[0] == '\0') {
-		info(udev, "no current target for '%s' found\n", slink);
-		rc = 1;
-		goto out;
-	}
-
-	/* create symlink to the target with the highest priority */
-	info(udev, "'%s' with target '%s' has the highest priority %i, create it\n", slink, target, priority);
-	if (!test) {
-		create_path(udev, slink);
-		node_symlink(udev, target, slink);
-	}
-out:
-	return rc;
-}
-
-void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev_old, int test)
-{
-	struct udev *udev = udev_device_get_udev(dev);
-	struct udev_list_entry *list_entry;
-	const char *devnode_old;
-
-	/* update possible left-over symlinks */
-	udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev_old)) {
-		struct udev_list_entry *list_entry_current;
-
-		udev_list_entry_foreach(list_entry_current, udev_device_get_devlinks_list_entry(dev)) {
-			if (strcmp(udev_list_entry_get_name(list_entry_current),
-				   udev_list_entry_get_name(list_entry)) == 0)
-				continue;
-		}
-		/* link does no longer belong to this device */
-		info(udev, "update old symlink '%s' no longer belonging to '%s'\n",
-		     udev_list_entry_get_name(list_entry), udev_device_get_devpath(dev));
-		update_link(dev, udev_list_entry_get_name(list_entry), test);
-	}
-
-	/*
-	 * if the node name has changed, delete the node,
-	 * and possibly restore a symlink of another device
-	 */
-	devnode_old = udev_device_get_devnode(dev_old);
-	if (devnode_old != NULL) {
-		const char *devnode = udev_device_get_devnode(dev);
-
-		if (devnode != NULL && strcmp(devnode_old, devnode) != 0)
-			update_link(dev, devnode_old, test);
-	}
-}
-
-int udev_node_add(struct udev_device *dev, mode_t mode, const char *owner, const char *group, int test)
-{
-	struct udev *udev = udev_device_get_udev(dev);
-	uid_t uid;
-	gid_t gid;
-	int i;
-	int num;
-	struct udev_list_entry *list_entry;
-	int err = 0;
-
-	create_path(udev, udev_device_get_devnode(dev));
-
-	if (strcmp(owner, "root") == 0)
-		uid = 0;
-	else {
-		char *endptr;
-		unsigned long id;
-
-		id = strtoul(owner, &endptr, 10);
-		if (endptr[0] == '\0')
-			uid = (uid_t) id;
-		else
-			uid = lookup_user(udev, owner);
-	}
-
-	if (strcmp(group, "root") == 0)
-		gid = 0;
-	else {
-		char *endptr;
-		unsigned long id;
-
-		id = strtoul(group, &endptr, 10);
-		if (endptr[0] == '\0')
-			gid = (gid_t) id;
-		else
-			gid = lookup_group(udev, group);
-	}
-
-	info(udev, "creating device node '%s', devnum=%d:%d, mode=%#o, uid=%d, gid=%d\n",
-	     udev_device_get_devnode(dev),
-	     major(udev_device_get_devnum(dev)), minor(udev_device_get_devnum(dev)),
-	     mode, uid, gid);
-
-	if (!test)
-		if (udev_node_mknod(dev, NULL, makedev(0,0), mode, uid, gid) != 0) {
-			err = -1;
-			goto exit;
-		}
-
-	/* create all_partitions if requested */
-	num = udev_device_get_num_fake_partitions(dev);
-	if (num > 0) {
-		info(udev, "creating device partition nodes '%s[1-%i]'\n", udev_device_get_devnode(dev), num);
-		if (!test) {
-			for (i = 1; i <= num; i++) {
-				char partitionname[UTIL_PATH_SIZE];
-				dev_t part_devnum;
-
-				snprintf(partitionname, sizeof(partitionname), "%s%d",
-					 udev_device_get_devnode(dev), i);
-				partitionname[sizeof(partitionname)-1] = '\0';
-				part_devnum = makedev(major(udev_device_get_devnum(dev)),
-						    minor(udev_device_get_devnum(dev)) + i);
-				udev_node_mknod(dev, partitionname, part_devnum, mode, uid, gid);
-			}
-		}
-	}
-
-	/* add node and to name index */
-	name_index(udev, udev_device_get_devpath(dev), udev_device_get_devnode(dev), 1, test);
-
-	/* create/update symlinks, add symlinks to name index */
-	udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
-		name_index(udev, udev_device_get_devpath(dev), udev_list_entry_get_name(list_entry), 1, test);
-		update_link(dev, udev_list_entry_get_name(list_entry), test);
-	}
-exit:
-	return err;
-}
-
-extern int udev_node_remove(struct udev_device *dev, int test)
-{
-	struct udev *udev = udev_device_get_udev(dev);
-	struct udev_list_entry *list_entry;
-	const char *devnode;
-	char partitionname[UTIL_PATH_SIZE];
-	struct stat stats;
-	int err = 0;
-	int num;
-
-	/* remove node from name index */
-	name_index(udev, udev_device_get_devpath(dev), udev_device_get_devnode(dev), 0, test);
-
-	/* remove,update symlinks, remove symlinks from name index */
-	udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(dev)) {
-		name_index(udev, udev_device_get_devpath(dev), udev_list_entry_get_name(list_entry), 0, test);
-		update_link(dev, udev_list_entry_get_name(list_entry), test);
-	}
-
-	devnode = udev_device_get_devnode(dev);
-	if (devnode == NULL)
-		return 0;
-	if (stat(devnode, &stats) != 0) {
-		info(udev, "device node '%s' not found\n", devnode);
-		return 0;
-	}
-	if (stats.st_rdev != udev_device_get_devnum(dev)) {
-		info(udev, "device node '%s' points to a different device, skip removal\n", devnode);
-		return -1;
-	}
-
-	info(udev, "removing device node '%s'\n", devnode);
-	if (!test)
-		err = unlink_secure(udev, devnode);
-	if (err)
-		return err;
-
-	num = udev_device_get_num_fake_partitions(dev);
-	if (num > 0) {
-		int i;
-
-		info(udev, "removing all_partitions '%s[1-%i]'\n", devnode, num);
-		if (num > 255)
-			return -1;
-		for (i = 1; i <= num; i++) {
-			snprintf(partitionname, sizeof(partitionname), "%s%d", devnode, i);
-			partitionname[sizeof(partitionname)-1] = '\0';
-			if (!test)
-				unlink_secure(udev, partitionname);
-		}
-	}
-	delete_path(udev, devnode);
-	return err;
-}