/*
- * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 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
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
-#include <errno.h>
-#include <dirent.h>
#include <sys/stat.h>
-#include <sys/types.h>
#include "udev.h"
return util_path_encode(&filename[start], len - start);
}
-/* 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)
-{
- char device[UTIL_PATH_SIZE];
- char filename[UTIL_PATH_SIZE * 2];
- 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, 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_db_get_devices_by_name(struct udev *udev, const char *name, struct list_head *name_list)
-{
- char dirname[PATH_MAX];
- size_t start;
- DIR *dir;
- int rc = 0;
-
- util_strlcpy(dirname, udev_get_dev_path(udev), sizeof(dirname));
- start = util_strlcat(dirname, "/.udev/names/", sizeof(dirname));
- util_strlcat(dirname, name, 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);
- rc = -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, ent->d_name, sizeof(device));
- util_path_decode(device);
- name_list_add(udev, name_list, device, 0);
- rc++;
- }
- closedir(dir);
-out:
- return rc;
-}
-
-int udev_db_rename(struct udev *udev, const char *devpath_old, const char *devpath)
-{
- char filename[UTIL_PATH_SIZE];
- char filename_old[UTIL_PATH_SIZE];
-
- devpath_to_db_path(udev, devpath_old, filename_old, sizeof(filename_old));
- devpath_to_db_path(udev, devpath, filename, sizeof(filename));
- return rename(filename_old, filename);
-}
-
-int udev_db_add_device(struct udevice *udevice)
+int udev_device_update_db(struct udev_device *udev_device)
{
+ struct udev *udev = udev_device_get_udev(udev_device);
char filename[UTIL_PATH_SIZE];
FILE *f;
- struct name_entry *name_loop;
char target[232]; /* on 64bit, tmpfs inlines up to 239 bytes */
+ size_t devlen = strlen(udev_get_dev_path(udev))+1;
+ struct udev_list_entry *list_entry;
int ret;
- if (udevice->test_run)
- return 0;
-
- devpath_to_db_path(udevice->udev, udevice->dev->devpath, filename, sizeof(filename));
- create_path(udevice->udev, filename);
+ devpath_to_db_path(udev,
+ udev_device_get_devpath(udev_device),
+ filename, sizeof(filename));
+ create_path(udev, filename);
unlink(filename);
- if (!list_empty(&udevice->env_list))
+ udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device))
+ if (udev_list_entry_get_flag(list_entry))
+ goto file;
+ if (udev_device_get_num_fake_partitions(udev_device))
goto file;
- if (udevice->partitions || udevice->ignore_remove)
+ if (udev_device_get_ignore_remove(udev_device))
goto file;
- /* try not to waste tmpfs memory, store values, if they fit, in a symlink target */
- util_strlcpy(target, udevice->name, sizeof(target));
- list_for_each_entry(name_loop, &udevice->symlink_list, node) {
+ /* try not to waste tmpfs memory; store values, if they fit, in a symlink target */
+ util_strlcpy(target, &udev_device_get_devnode(udev_device)[devlen], sizeof(target));
+ udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(udev_device)) {
size_t len;
util_strlcat(target, " ", sizeof(target));
- len = util_strlcat(target, name_loop->name, sizeof(target));
+ len = util_strlcat(target, &udev_list_entry_get_name(list_entry)[devlen], sizeof(target));
if (len >= sizeof(target)) {
- info(udevice->udev, "size of links too large, create file\n");
+ info(udev, "size of links too large, create file\n");
goto file;
}
}
- /* add symlink names to index */
- list_for_each_entry(name_loop, &udevice->symlink_list, node) {
- name_index(udevice->udev, udevice->dev->devpath, name_loop->name, 1);
- }
- info(udevice->udev, "create db link (%s)\n", target);
- udev_selinux_setfscreatecon(udevice->udev, filename, S_IFLNK);
+ info(udev, "create db link (%s)\n", target);
+ udev_selinux_setfscreatecon(udev, filename, S_IFLNK);
ret = symlink(target, filename);
- udev_selinux_resetfscreatecon(udevice->udev);
+ udev_selinux_resetfscreatecon(udev);
if (ret == 0)
goto out;
file:
f = fopen(filename, "w");
if (f == NULL) {
- err(udevice->udev, "unable to create db file '%s': %m\n", filename);
+ err(udev, "unable to create db file '%s': %m\n", filename);
return -1;
}
- info(udevice->udev, "created db file for '%s' in '%s'\n", udevice->dev->devpath, filename);
-
- fprintf(f, "N:%s\n", udevice->name);
- list_for_each_entry(name_loop, &udevice->symlink_list, node) {
- fprintf(f, "S:%s\n", name_loop->name);
- /* add symlink names to index */
- name_index(udevice->udev, udevice->dev->devpath, name_loop->name, 1);
+ info(udev, "created db file for '%s' in '%s'\n", udev_device_get_devpath(udev_device), filename);
+
+ fprintf(f, "N:%s\n", &udev_device_get_devnode(udev_device)[devlen]);
+ udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(udev_device))
+ fprintf(f, "S:%s\n", &udev_list_entry_get_name(list_entry)[devlen]);
+ if (udev_device_get_devlink_priority(udev_device) != 0)
+ fprintf(f, "L:%u\n", udev_device_get_devlink_priority(udev_device));
+ if (udev_device_get_event_timeout(udev_device) >= 0)
+ fprintf(f, "T:%u\n", udev_device_get_event_timeout(udev_device));
+ if (udev_device_get_num_fake_partitions(udev_device) != 0)
+ fprintf(f, "A:%u\n", udev_device_get_num_fake_partitions(udev_device));
+ if (udev_device_get_ignore_remove(udev_device))
+ fprintf(f, "R:%u\n", udev_device_get_ignore_remove(udev_device));
+ udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
+ if (!udev_list_entry_get_flag(list_entry))
+ continue;
+ fprintf(f, "E:%s=%s\n",
+ udev_list_entry_get_name(list_entry),
+ udev_list_entry_get_value(list_entry));
}
- fprintf(f, "M:%u:%u\n", major(udevice->devt), minor(udevice->devt));
- if (udevice->link_priority != 0)
- fprintf(f, "L:%u\n", udevice->link_priority);
- if (udevice->event_timeout >= 0)
- fprintf(f, "T:%u\n", udevice->event_timeout);
- if (udevice->partitions != 0)
- fprintf(f, "A:%u\n", udevice->partitions);
- if (udevice->ignore_remove)
- fprintf(f, "R:%u\n", udevice->ignore_remove);
- list_for_each_entry(name_loop, &udevice->env_list, node)
- fprintf(f, "E:%s\n", name_loop->name);
fclose(f);
out:
- /* add name to index */
- name_index(udevice->udev, udevice->dev->devpath, udevice->name, 1);
return 0;
}
-int udev_db_get_device(struct udevice *udevice, const char *devpath)
+int udev_device_delete_db(struct udev_device *udev_device)
{
- struct stat stats;
char filename[UTIL_PATH_SIZE];
- char line[UTIL_PATH_SIZE];
- unsigned int maj, min;
- char *bufline;
- char *buf;
- size_t bufsize;
- size_t cur;
- size_t count;
-
- sysfs_device_set_values(udevice->udev, udevice->dev, devpath, NULL, NULL);
- devpath_to_db_path(udevice->udev, devpath, filename, sizeof(filename));
-
- if (lstat(filename, &stats) != 0) {
- info(udevice->udev, "no db file to read %s: %m\n", filename);
- return -1;
- }
- if ((stats.st_mode & S_IFMT) == S_IFLNK) {
- char target[UTIL_NAME_SIZE];
- int target_len;
- char *next;
-
- info(udevice->udev, "found db symlink\n");
- target_len = readlink(filename, target, sizeof(target));
- if (target_len > 0)
- target[target_len] = '\0';
- else {
- info(udevice->udev, "error reading db link %s: %m\n", filename);
- return -1;
- }
- next = strchr(target, ' ');
- if (next != NULL) {
- next[0] = '\0';
- next = &next[1];
- }
- info(udevice->udev, "got db link node: '%s'\n", target);
- util_strlcpy(udevice->name, target, sizeof(udevice->name));
- while (next != NULL) {
- char *lnk;
-
- lnk = next;
- next = strchr(next, ' ');
- if (next != NULL) {
- next[0] = '\0';
- next = &next[1];
- }
- info(udevice->udev, "got db link link: '%s'\n", lnk);
- name_list_add(udevice->udev, &udevice->symlink_list, lnk, 0);
- }
- return 0;
- }
-
- if (file_map(filename, &buf, &bufsize) != 0) {
- info(udevice->udev, "error reading db file %s: %m\n", filename);
- return -1;
- }
-
- cur = 0;
- while (cur < bufsize) {
- count = buf_get_line(buf, bufsize, cur);
- bufline = &buf[cur];
- cur += count+1;
-
- if (count > sizeof(line))
- count = sizeof(line);
- memcpy(line, &bufline[2], count-2);
- line[count-2] = '\0';
-
- switch(bufline[0]) {
- case 'N':
- util_strlcpy(udevice->name, line, sizeof(udevice->name));
- break;
- case 'M':
- sscanf(line, "%u:%u", &maj, &min);
- udevice->devt = makedev(maj, min);
- break;
- case 'S':
- name_list_add(udevice->udev, &udevice->symlink_list, line, 0);
- break;
- case 'L':
- udevice->link_priority = atoi(line);
- break;
- case 'T':
- udevice->event_timeout = atoi(line);
- break;
- case 'A':
- udevice->partitions = atoi(line);
- break;
- case 'R':
- udevice->ignore_remove = atoi(line);
- break;
- case 'E':
- name_list_add(udevice->udev, &udevice->env_list, line, 0);
- break;
- }
- }
- file_unmap(buf, bufsize);
-
- if (udevice->name[0] == '\0')
- return -1;
+ devpath_to_db_path(udev_device_get_udev(udev_device),
+ udev_device_get_devpath(udev_device),
+ filename, sizeof(filename));
+ unlink(filename);
return 0;
}
-int udev_db_delete_device(struct udevice *udevice)
+int udev_device_rename_db(struct udev_device *udev_device, const char *devpath_old)
{
+ char filename_old[UTIL_PATH_SIZE];
char filename[UTIL_PATH_SIZE];
- struct name_entry *name_loop;
-
- if (udevice->test_run)
- return 0;
-
- devpath_to_db_path(udevice->udev, udevice->dev->devpath, filename, sizeof(filename));
- unlink(filename);
- name_index(udevice->udev, udevice->dev->devpath, udevice->name, 0);
- list_for_each_entry(name_loop, &udevice->symlink_list, node)
- name_index(udevice->udev, udevice->dev->devpath, name_loop->name, 0);
-
- return 0;
+ devpath_to_db_path(udev_device_get_udev(udev_device),
+ devpath_old,
+ filename_old, sizeof(filename_old));
+ devpath_to_db_path(udev_device_get_udev(udev_device),
+ udev_device_get_devpath(udev_device),
+ filename, sizeof(filename));
+ return rename(filename_old, filename);
}
~ianmdlvl / elogind.git / blobdiff