| /* commands/sysloader/installer/installer.c |
| * |
| * Copyright 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. |
| */ |
| |
| #define LOG_TAG "installer" |
| |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/mount.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| |
| |
| #include <cutils/config_utils.h> |
| #include <cutils/log.h> |
| |
| #include "diskconfig.h" |
| #include "installer.h" |
| |
| #define MKE2FS_BIN "/system/bin/mke2fs" |
| #define E2FSCK_BIN "/system/bin/e2fsck" |
| #define TUNE2FS_BIN "/system/bin/tune2fs" |
| #define RESIZE2FS_BIN "/system/bin/resize2fs" |
| |
| static int |
| usage(void) |
| { |
| fprintf(stderr, "Usage: %s\n", LOG_TAG); |
| fprintf(stderr, "\t-c <path> - Path to installer conf file " |
| "(/system/etc/installer.conf)\n"); |
| fprintf(stderr, "\t-l <path> - Path to device disk layout conf file " |
| "(/system/etc/disk_layout.conf)\n"); |
| fprintf(stderr, "\t-h - This help message\n"); |
| fprintf(stderr, "\t-d - Dump the compiled in partition info.\n"); |
| fprintf(stderr, "\t-p <path> - Path to device that should be mounted" |
| " to /data.\n"); |
| fprintf(stderr, "\t-t - Test mode. Don't write anything to disk.\n"); |
| return 1; |
| } |
| |
| static cnode * |
| read_conf_file(const char *fn) |
| { |
| cnode *root = config_node("", ""); |
| config_load_file(root, fn); |
| |
| if (root->first_child == NULL) { |
| LOGE("Could not read config file %s", fn); |
| return NULL; |
| } |
| |
| return root; |
| } |
| |
| static int |
| exec_cmd(const char *cmd, ...) /* const char *arg, ...) */ |
| { |
| va_list ap; |
| int size = 0; |
| char *str; |
| char *outbuf; |
| int rv; |
| |
| /* compute the size for the command buffer */ |
| size = strlen(cmd) + 1; |
| va_start(ap, cmd); |
| while ((str = va_arg(ap, char *))) { |
| size += strlen(str) + 1; /* need room for the space separator */ |
| } |
| va_end(ap); |
| |
| if (!(outbuf = malloc(size + 1))) { |
| LOGE("Can't allocate memory to exec cmd"); |
| return -1; |
| } |
| |
| /* this is a bit inefficient, but is trivial, and works */ |
| strcpy(outbuf, cmd); |
| va_start(ap, cmd); |
| while ((str = va_arg(ap, char *))) { |
| strcat(outbuf, " "); |
| strcat(outbuf, str); |
| } |
| va_end(ap); |
| |
| LOGI("Executing: %s", outbuf); |
| rv = system(outbuf); |
| free(outbuf); |
| if (rv < 0) { |
| LOGI("Error while trying to execute '%s'", cmd); |
| return -1; |
| } |
| rv = WEXITSTATUS(rv); |
| LOGI("Done executing %s (%d)", outbuf, rv); |
| return rv; |
| } |
| |
| |
| static int |
| do_fsck(const char *dst, int force) |
| { |
| int rv; |
| const char *opts = force ? "-fy" : "-y"; |
| |
| |
| LOGI("Running e2fsck... (force=%d) This MAY take a while.", force); |
| if ((rv = exec_cmd(E2FSCK_BIN, "-C 0", opts, dst, NULL)) < 0) |
| return 1; |
| if (rv >= 4) { |
| LOGE("Error while running e2fsck: %d", rv); |
| return 1; |
| } |
| sync(); |
| LOGI("e2fsck succeeded (exit code: %d)", rv); |
| |
| return 0; |
| } |
| |
| static int |
| process_ext2_image(const char *dst, const char *src, uint32_t flags, int test) |
| { |
| int rv; |
| |
| /* First, write the image to disk. */ |
| if (write_raw_image(dst, src, 0, test)) |
| return 1; |
| |
| if (test) |
| return 0; |
| |
| /* Next, let's e2fsck the fs to make sure it got written ok, and |
| * everything is peachy */ |
| if (do_fsck(dst, 1)) |
| return 1; |
| |
| /* set the mount count to 1 so that 1st mount on boot doesn't complain */ |
| if ((rv = exec_cmd(TUNE2FS_BIN, "-C", "1", dst, NULL)) < 0) |
| return 1; |
| if (rv) { |
| LOGE("Error while running tune2fs: %d", rv); |
| return 1; |
| } |
| |
| /* If the user requested that we resize, let's do it now */ |
| if (flags & INSTALL_FLAG_RESIZE) { |
| if ((rv = exec_cmd(RESIZE2FS_BIN, "-F", dst, NULL)) < 0) |
| return 1; |
| if (rv) { |
| LOGE("Error while running resize2fs: %d", rv); |
| return 1; |
| } |
| sync(); |
| if (do_fsck(dst, 0)) |
| return 1; |
| } |
| |
| /* make this an ext3 fs? */ |
| if (flags & INSTALL_FLAG_ADDJOURNAL) { |
| if ((rv = exec_cmd(TUNE2FS_BIN, "-j", dst, NULL)) < 0) |
| return 1; |
| if (rv) { |
| LOGE("Error while running tune2fs: %d", rv); |
| return 1; |
| } |
| sync(); |
| if (do_fsck(dst, 0)) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| |
| /* TODO: PLEASE break up this function into several functions that just |
| * do what they need with the image node. Many of them will end up |
| * looking at same strings, but it will be sooo much cleaner */ |
| static int |
| process_image_node(cnode *img, struct disk_info *dinfo, int test) |
| { |
| struct part_info *pinfo = NULL; |
| loff_t offset = (loff_t)-1; |
| const char *filename = NULL; |
| char *dest_part = NULL; |
| const char *tmp; |
| uint32_t flags = 0; |
| uint8_t type = 0; |
| int rv; |
| int func_ret = 1; |
| |
| filename = config_str(img, "filename", NULL); |
| |
| /* process the 'offset' image parameter */ |
| if ((tmp = config_str(img, "offset", NULL)) != NULL) |
| offset = strtoull(tmp, NULL, 0); |
| |
| /* process the 'partition' image parameter */ |
| if ((tmp = config_str(img, "partition", NULL)) != NULL) { |
| if (offset != (loff_t)-1) { |
| LOGE("Cannot specify the partition name AND an offset for %s", |
| img->name); |
| goto fail; |
| } |
| |
| if (!(pinfo = find_part(dinfo, tmp))) { |
| LOGE("Cannot find partition %s while processing %s", |
| tmp, img->name); |
| goto fail; |
| } |
| |
| if (!(dest_part = find_part_device(dinfo, pinfo->name))) { |
| LOGE("Could not get the device name for partition %s while" |
| " processing image %s", pinfo->name, img->name); |
| goto fail; |
| } |
| offset = pinfo->start_lba * dinfo->sect_size; |
| } |
| |
| /* process the 'mkfs' parameter */ |
| if ((tmp = config_str(img, "mkfs", NULL)) != NULL) { |
| char *journal_opts; |
| char vol_lbl[16]; /* ext2/3 has a 16-char volume label */ |
| |
| if (!pinfo) { |
| LOGE("Target partition required for mkfs for '%s'", img->name); |
| goto fail; |
| } else if (filename) { |
| LOGE("Providing filename and mkfs parameters is meaningless"); |
| goto fail; |
| } |
| |
| if (!strcmp(tmp, "ext2")) |
| journal_opts = ""; |
| else if (!strcmp(tmp, "ext3")) |
| journal_opts = "-j"; |
| else { |
| LOGE("Unknown filesystem type for mkfs: %s", tmp); |
| goto fail; |
| } |
| |
| /* put the partition name as the volume label */ |
| strncpy(vol_lbl, pinfo->name, sizeof(vol_lbl)); |
| |
| /* since everything checked out, lets make the fs, and return since |
| * we don't need to do anything else */ |
| rv = exec_cmd(MKE2FS_BIN, "-L", vol_lbl, journal_opts, dest_part, NULL); |
| if (rv < 0) |
| goto fail; |
| else if (rv > 0) { |
| LOGE("Error while running mke2fs: %d", rv); |
| goto fail; |
| } |
| sync(); |
| if (do_fsck(dest_part, 0)) |
| goto fail; |
| goto done; |
| } |
| |
| /* since we didn't mkfs above, all the rest of the options assume |
| * there's a filename involved */ |
| if (!filename) { |
| LOGE("Filename is required for image %s", img->name); |
| goto fail; |
| } |
| |
| /* process the 'flags' image parameter */ |
| if ((tmp = config_str(img, "flags", NULL)) != NULL) { |
| char *flagstr, *flagstr_orig; |
| |
| if (!(flagstr = flagstr_orig = strdup(tmp))) { |
| LOGE("Cannot allocate memory for dup'd flags string"); |
| goto fail; |
| } |
| while ((tmp = strsep(&flagstr, ","))) { |
| if (!strcmp(tmp, "resize")) |
| flags |= INSTALL_FLAG_RESIZE; |
| else if (!strcmp(tmp, "addjournal")) |
| flags |= INSTALL_FLAG_ADDJOURNAL; |
| else { |
| LOGE("Unknown flag '%s' for image %s", tmp, img->name); |
| free(flagstr_orig); |
| goto fail; |
| } |
| } |
| free(flagstr_orig); |
| } |
| |
| /* process the 'type' image parameter */ |
| if (!(tmp = config_str(img, "type", NULL))) { |
| LOGE("Type is required for image %s", img->name); |
| goto fail; |
| } else if (!strcmp(tmp, "raw")) { |
| type = INSTALL_IMAGE_RAW; |
| } else if (!strcmp(tmp, "ext2")) { |
| type = INSTALL_IMAGE_EXT2; |
| } else if (!strcmp(tmp, "ext3")) { |
| type = INSTALL_IMAGE_EXT3; |
| } else { |
| LOGE("Unknown image type '%s' for image %s", tmp, img->name); |
| goto fail; |
| } |
| |
| /* at this point we MUST either have a partition in 'pinfo' or a raw |
| * 'offset', otherwise quit */ |
| if (!pinfo && (offset == (loff_t)-1)) { |
| LOGE("Offset to write into the disk is unknown for %s", img->name); |
| goto fail; |
| } |
| |
| if (!pinfo && (type != INSTALL_IMAGE_RAW)) { |
| LOGE("Only raw images can specify direct offset on the disk. Please" |
| " specify the target partition name instead. (%s)", img->name); |
| goto fail; |
| } |
| |
| switch(type) { |
| case INSTALL_IMAGE_RAW: |
| if (write_raw_image(dinfo->device, filename, offset, test)) |
| goto fail; |
| break; |
| |
| case INSTALL_IMAGE_EXT3: |
| /* makes the error checking in the imager function easier */ |
| if (flags & INSTALL_FLAG_ADDJOURNAL) { |
| LOGW("addjournal flag is meaningless for ext3 images"); |
| flags &= ~INSTALL_FLAG_ADDJOURNAL; |
| } |
| /* ...fall through... */ |
| |
| case INSTALL_IMAGE_EXT2: |
| if (process_ext2_image(dest_part, filename, flags, test)) |
| goto fail; |
| break; |
| |
| default: |
| LOGE("Unknown image type: %d", type); |
| goto fail; |
| } |
| |
| done: |
| func_ret = 0; |
| |
| fail: |
| if (dest_part) |
| free(dest_part); |
| return func_ret; |
| } |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| char *disk_conf_file = "/system/etc/disk_layout.conf"; |
| char *inst_conf_file = "/system/etc/installer.conf"; |
| char *inst_data_dir = "/data"; |
| char *inst_data_dev = NULL; |
| char *data_fstype = "ext2"; |
| cnode *config; |
| cnode *images; |
| cnode *img; |
| int cnt = 0; |
| struct disk_info *device_disk_info; |
| int dump = 0; |
| int test = 0; |
| int x; |
| |
| while ((x = getopt (argc, argv, "thdc:l:p:")) != EOF) { |
| switch (x) { |
| case 'h': |
| return usage(); |
| case 'c': |
| inst_conf_file = optarg; |
| break; |
| case 'l': |
| disk_conf_file = optarg; |
| break; |
| case 't': |
| test = 1; |
| break; |
| case 'p': |
| inst_data_dev = optarg; |
| break; |
| case 'd': |
| dump = 1; |
| break; |
| default: |
| fprintf(stderr, "Unknown argument: %c\n", (char)optopt); |
| return usage(); |
| } |
| } |
| |
| /* If the user asked us to wait for data device, wait for it to appear, |
| * and then mount it onto /data */ |
| if (inst_data_dev && !dump) { |
| struct stat filestat; |
| |
| LOGI("Waiting for device: %s", inst_data_dev); |
| while (stat(inst_data_dev, &filestat)) |
| sleep(1); |
| LOGI("Device %s ready", inst_data_dev); |
| if (mount(inst_data_dev, inst_data_dir, data_fstype, MS_RDONLY, NULL)) { |
| LOGE("Could not mount %s on %s as %s", inst_data_dev, inst_data_dir, |
| data_fstype); |
| return 1; |
| } |
| } |
| |
| /* Read and process the disk configuration */ |
| if (!(device_disk_info = load_diskconfig(disk_conf_file, NULL))) { |
| LOGE("Errors encountered while loading disk conf file %s", |
| disk_conf_file); |
| return 1; |
| } |
| |
| if (process_disk_config(device_disk_info)) { |
| LOGE("Errors encountered while processing disk config from %s", |
| disk_conf_file); |
| return 1; |
| } |
| |
| /* Was all of this for educational purposes? If so, quit. */ |
| if (dump) { |
| dump_disk_config(device_disk_info); |
| return 0; |
| } |
| |
| /* This doesnt do anything but load the config file */ |
| if (!(config = read_conf_file(inst_conf_file))) |
| return 1; |
| |
| /* First, partition the drive */ |
| if (apply_disk_config(device_disk_info, test)) |
| return 1; |
| |
| /* Now process the installer config file and write the images to disk */ |
| if (!(images = config_find(config, "images"))) { |
| LOGE("Invalid configuration file %s. Missing 'images' section", |
| inst_conf_file); |
| return 1; |
| } |
| |
| for (img = images->first_child; img; img = img->next) { |
| if (process_image_node(img, device_disk_info, test)) |
| return 1; |
| ++cnt; |
| } |
| |
| /* |
| * We have to do the apply() twice. We must do it once before the image |
| * writes to layout the disk partitions so that we can write images to |
| * them. We then do the apply() again in case one of the images |
| * replaced the MBR with a new bootloader, and thus messed with |
| * partition table. |
| */ |
| if (apply_disk_config(device_disk_info, test)) |
| return 1; |
| |
| LOGI("Done processing installer config. Configured %d images", cnt); |
| return 0; |
| } |
