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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.
*/
/*
** mountd main program
*/
#include "mountd.h"
#include <cutils/config_utils.h>
#include <cutils/cpu_info.h>
#include <cutils/properties.h>
#include <sys/mount.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/capability.h>
#include <linux/prctl.h>
#include <private/android_filesystem_config.h>
#ifdef MOUNTD_LOG
FILE* logFile;
#endif
struct asec_cfg {
const char *name;
const char *backing_file;
const char *size;
const char *mount_point;
const char *crypt;
};
static int ProcessAsecData(cnode *node, struct asec_cfg *stores, int idx)
{
cnode *child = node->first_child;
const char *name = NULL;
const char *file = NULL;
const char *size = NULL;
const char *mp = NULL;
const char *crypt = NULL;
LOG_ASEC("ProcessAsecData(%s, %p, %d)\n", node->name, stores, idx);
while (child) {
if (!strcmp(child->name, "name"))
name = child->value;
else if (!strcmp(child->name, "backing_file"))
file = child->value;
else if (!strcmp(child->name, "size"))
size = child->value;
else if (!strcmp(child->name, "mount_point"))
mp = child->value;
else if (!strcmp(child->name, "crypt"))
crypt = child->value;
child = child->next;
}
if (!name || !file || !size || !mp || !crypt) {
LOG_ERROR("Missing required token from config. Skipping ASEC volume\n");
return -1;
} else if (idx == ASEC_STORES_MAX) {
LOG_ERROR("Maximum # of ASEC stores already defined\n");
return -1;
}
stores[idx].name = name;
stores[idx].backing_file = file;
stores[idx].size = size;
stores[idx].mount_point = mp;
stores[idx].crypt = crypt;
return ++idx;
}
static void ReadConfigFile(const char* path)
{
cnode* root = config_node("", "");
cnode* node;
config_load_file(root, path);
node = root->first_child;
while (node)
{
if (strcmp(node->name, "mount") == 0)
{
const char* block_device = NULL;
const char* mount_point = NULL;
const char* driver_store_path = NULL;
boolean enable_ums = false;
cnode* child = node->first_child;
struct asec_cfg asec_stores[ASEC_STORES_MAX];
int asec_idx = 0;
memset(asec_stores, 0, sizeof(asec_stores));
while (child)
{
const char* name = child->name;
const char* value = child->value;
if (!strncmp(name, "asec_", 5)) {
int rc = ProcessAsecData(child, asec_stores, asec_idx);
if (rc < 0) {
LOG_ERROR("Error processing ASEC cfg data\n");
} else
asec_idx = rc;
} else if (strcmp(name, "block_device") == 0)
block_device = value;
else if (strcmp(name, "mount_point") == 0)
mount_point = value;
else if (strcmp(name, "driver_store_path") == 0)
driver_store_path = value;
else if (strcmp(name, "enable_ums") == 0 &&
strcmp(value, "true") == 0)
enable_ums = true;
child = child->next;
}
// mount point and removable fields are optional
if (block_device && mount_point)
{
void *mp = AddMountPoint(block_device, mount_point, driver_store_path, enable_ums);
int i;
for (i = 0; i < asec_idx; i++) {
AddAsecToMountPoint(mp, asec_stores[i].name, asec_stores[i].backing_file,
asec_stores[i].size, asec_stores[i].mount_point,
asec_stores[i].crypt);
}
}
}
node = node->next;
}
}
int main(int argc, char* argv[])
{
const char* configPath = "/system/etc/mountd.conf";
int i;
for (i = 1; i < argc; i++)
{
const char* arg = argv[i];
if (strcmp(arg, "-f") == 0)
{
if (i < argc - 1)
configPath = argv[++i];
}
}
ReadConfigFile(configPath);
StartAutoMounter();
return RunServer();
}
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