diff options
Diffstat (limited to 'mountd/mountd.c')
| -rw-r--r-- | mountd/mountd.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/mountd/mountd.c b/mountd/mountd.c new file mode 100644 index 0000000..27ec8de --- /dev/null +++ b/mountd/mountd.c @@ -0,0 +1,174 @@ +/* + * 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(); +} |