| /* |
| * 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(); |
| } |