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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <sys/types.h>
#include "vold.h"
#include "media.h"
static media_list_t *list_root = NULL;
media_t *media_create(char *devpath, char *name, char *serial, media_type_t type)
{
media_list_t *list_entry;
media_t *new;
if (!(new = malloc(sizeof(media_t))))
return NULL;
memset(new, 0, sizeof(media_t));
if (!(list_entry = malloc(sizeof(media_list_t)))) {
free(new);
return NULL;
}
list_entry->media = new;
list_entry->next = NULL;
if (!list_root)
list_root = list_entry;
else {
media_list_t *list_scan = list_root;
while(list_scan->next)
list_scan = list_scan->next;
list_scan->next = list_entry;
}
new->devpath = strdup(devpath);
new->name = strdup(name);
if (!serial)
new->serial = 0;
else
new->serial = strtoul(serial, NULL, 0);
new->media_type = type;
return new;
}
void media_destroy(media_t *media)
{
media_list_t *list_next;
if (list_root->media == media) {
list_next = list_root->next;
free(list_root);
list_root = list_next;
} else {
media_list_t *list_scan = list_root;
while (list_scan->next->media != media)
list_scan = list_scan -> next;
list_next = list_scan->next->next;
free(list_scan->next);
list_scan->next = list_next;
}
free(media->devpath);
free(media->name);
while(media->devs)
media_remove_blkdev(media, media->devs->dev);
free(media);
}
media_t *media_lookup_by_path(char *devpath, boolean fuzzy_match)
{
media_list_t *list_scan = list_root;
while (list_scan) {
if (fuzzy_match) {
if (!strncmp(list_scan->media->devpath, devpath, strlen(devpath)))
return list_scan->media;
} else {
if (!strcmp(list_scan->media->devpath, devpath))
return list_scan->media;
}
list_scan = list_scan->next;
}
#if DEBUG_MEDIA
LOG_VOL("media_lookup_by_path(): No media found @ %s", devpath);
#endif
return NULL;
}
int media_add_blkdev(media_t *card, blkdev_t *dev)
{
blkdev_list_t *list_entry;
if (!(list_entry = malloc(sizeof(blkdev_list_t)))) {
LOGE("Out of memory");
return -ENOMEM;
}
list_entry->next = NULL;
list_entry->dev = dev;
if (!card->devs)
card->devs = list_entry;
else {
blkdev_list_t *scan = card->devs;
while(scan->next)
scan = scan->next;
scan->next = list_entry;
}
return 0;
}
void media_remove_blkdev(media_t *card, blkdev_t *dev)
{
if (card->devs->dev == dev)
card->devs = card->devs->next;
else {
blkdev_list_t *scan = card->devs;
while (scan->next->dev != dev)
scan = scan -> next;
blkdev_list_t *next = scan->next->next;
free(scan->next);
scan->next = next;
}
}
media_t *media_lookup_by_dev(blkdev_t *dev)
{
media_list_t *media_scan = list_root;
while (media_scan) {
blkdev_list_t *blk_scan = media_scan->media->devs;
while (blk_scan) {
if (blk_scan->dev == dev)
return media_scan->media;
blk_scan = blk_scan->next;
}
media_scan = media_scan->next;
}
return NULL;
}
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