/*
* libudev - interface to udev device information
*
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
#include <stdio.h>
#include <string.h>
#include <stddef.h>
+#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include "libudev.h"
#include "libudev-private.h"
-static size_t devpath_to_db_path(struct udev *udev, const char *devpath, char *filename, size_t len)
+static void udev_device_tag(struct udev_device *dev, const char *tag, bool add)
{
- char *s;
- size_t l;
+ const char *id;
+ struct udev *udev = udev_device_get_udev(dev);
+ char filename[UTIL_PATH_SIZE];
- s = filename;
- l = util_strpcpyl(&s, len, udev_get_dev_path(udev), "/.udev/db/", NULL);
- return util_path_encode(devpath, s, l);
+ id = udev_device_get_id_filename(dev);
+ if (id == NULL)
+ return;
+ util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/tags/", tag, "/", id, NULL);
+
+ if (add) {
+ util_create_path(udev, filename);
+ symlink(udev_device_get_devpath(dev), filename);
+ } else {
+ unlink(filename);
+ }
+}
+
+int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add)
+{
+ struct udev_list_entry *list_entry;
+ bool found;
+
+ if (add && dev_old != NULL) {
+ /* delete possible left-over tags */
+ udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev_old)) {
+ const char *tag_old = udev_list_entry_get_name(list_entry);
+ struct udev_list_entry *list_entry_current;
+
+ found = false;
+ udev_list_entry_foreach(list_entry_current, udev_device_get_tags_list_entry(dev)) {
+ const char *tag = udev_list_entry_get_name(list_entry_current);
+
+ if (strcmp(tag, tag_old) == 0) {
+ found = true;
+ break;
+ }
+ }
+ if (!found)
+ udev_device_tag(dev_old, tag_old, false);
+ }
+ }
+
+ udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev))
+ udev_device_tag(dev, udev_list_entry_get_name(list_entry), add);
+
+ return 0;
}
int udev_device_update_db(struct udev_device *udev_device)
{
+ const char *id;
struct udev *udev = udev_device_get_udev(udev_device);
char filename[UTIL_PATH_SIZE];
+ char filename_tmp[UTIL_PATH_SIZE];
FILE *f;
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;
- devpath_to_db_path(udev, udev_device_get_devpath(udev_device), filename, sizeof(filename));
- util_create_path(udev, filename);
- unlink(filename);
+ id = udev_device_get_id_filename(udev_device);
+ if (id == NULL)
+ return -1;
+ util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/db/", id, NULL);
+ util_strscpyl(filename_tmp, sizeof(filename_tmp), filename, ".tmp", NULL);
udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device))
- if (udev_list_entry_get_flag(list_entry))
+ if (udev_list_entry_get_flags(list_entry))
goto file;
- if (udev_device_get_num_fake_partitions(udev_device) != 0)
- goto file;
- if (udev_device_get_ignore_remove(udev_device))
+ if (udev_device_get_tags_list_entry(udev_device) != NULL)
goto file;
if (udev_device_get_devlink_priority(udev_device) != 0)
goto file;
goto file;
}
}
- info(udev, "create db link (%s)\n", target);
- udev_selinux_setfscreatecon(udev, filename, S_IFLNK);
- ret = symlink(target, filename);
+ udev_selinux_setfscreatecon(udev, filename_tmp, S_IFLNK);
+ util_create_path(udev, filename_tmp);
+ ret = symlink(target, filename_tmp);
udev_selinux_resetfscreatecon(udev);
- if (ret == 0)
- goto out;
+ if (ret != 0)
+ goto file;
+ ret = rename(filename_tmp, filename);
+ if (ret != 0)
+ goto file;
+ info(udev, "created db link (%s)\n", target);
+ goto out;
file:
- f = fopen(filename, "w");
+ util_create_path(udev, filename_tmp);
+ f = fopen(filename_tmp, "w");
if (f == NULL) {
- err(udev, "unable to create db file '%s': %m\n", filename);
+ err(udev, "unable to create temporary db file '%s': %m\n", filename_tmp);
return -1;
- }
- info(udev, "created db file for '%s' in '%s'\n", udev_device_get_devpath(udev_device), filename);
+ }
if (udev_device_get_devnode(udev_device) != NULL) {
fprintf(f, "N:%s\n", &udev_device_get_devnode(udev_device)[devlen]);
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));
+ fprintf(f, "L:%i\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));
+ fprintf(f, "T:%i\n", udev_device_get_event_timeout(udev_device));
if (udev_device_get_watch_handle(udev_device) >= 0)
- fprintf(f, "W:%u\n", udev_device_get_watch_handle(udev_device));
+ fprintf(f, "W:%i\n", udev_device_get_watch_handle(udev_device));
udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) {
- if (!udev_list_entry_get_flag(list_entry))
+ if (!udev_list_entry_get_flags(list_entry))
continue;
fprintf(f, "E:%s=%s\n",
udev_list_entry_get_name(list_entry),
udev_list_entry_get_value(list_entry));
}
+ udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device))
+ fprintf(f, "G:%s\n", udev_list_entry_get_name(list_entry));
fclose(f);
+ rename(filename_tmp, filename);
+ info(udev, "created db file for '%s' in '%s'\n", udev_device_get_devpath(udev_device), filename);
out:
return 0;
}
int udev_device_delete_db(struct udev_device *udev_device)
{
+ const char *id;
struct udev *udev = udev_device_get_udev(udev_device);
char filename[UTIL_PATH_SIZE];
- devpath_to_db_path(udev, udev_device_get_devpath(udev_device), filename, sizeof(filename));
+ id = udev_device_get_id_filename(udev_device);
+ if (id == NULL)
+ return -1;
+ util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/db/", id, NULL);
unlink(filename);
return 0;
}
-
-int udev_device_rename_db(struct udev_device *udev_device, const char *devpath_old)
-{
- struct udev *udev = udev_device_get_udev(udev_device);
- char filename_old[UTIL_PATH_SIZE];
- char filename[UTIL_PATH_SIZE];
-
- devpath_to_db_path(udev, devpath_old, filename_old, sizeof(filename_old));
- devpath_to_db_path(udev, udev_device_get_devpath(udev_device), filename, sizeof(filename));
- return rename(filename_old, filename);
-}
~ianmdlvl / elogind.git / blobdiff