From ffb48f64fec674c6dd923eb8b1eb3f743e05a8ba Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:14 -0800 Subject: auto import from //depot/cupcake/@135843 --- roots.c | 370 ---------------------------------------------------------------- 1 file changed, 370 deletions(-) delete mode 100644 roots.c (limited to 'roots.c') diff --git a/roots.c b/roots.c deleted file mode 100644 index 6a6cf8adc..000000000 --- a/roots.c +++ /dev/null @@ -1,370 +0,0 @@ -/* - * Copyright (C) 2007 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 -#include -#include -#include -#include -#include - -#include "mtdutils/mtdutils.h" -#include "mtdutils/mounts.h" -#include "minzip/Zip.h" -#include "roots.h" -#include "common.h" - -typedef struct { - const char *name; - const char *device; - const char *device2; // If the first one doesn't work (may be NULL) - const char *partition_name; - const char *mount_point; - const char *filesystem; -} RootInfo; - -/* Canonical pointers. -xxx may just want to use enums - */ -static const char g_mtd_device[] = "@\0g_mtd_device"; -static const char g_raw[] = "@\0g_raw"; -static const char g_package_file[] = "@\0g_package_file"; - -static RootInfo g_roots[] = { - { "BOOT:", g_mtd_device, NULL, "boot", NULL, g_raw }, - { "CACHE:", g_mtd_device, NULL, "cache", "/cache", "yaffs2" }, - { "DATA:", g_mtd_device, NULL, "userdata", "/data", "yaffs2" }, - { "MISC:", g_mtd_device, NULL, "misc", NULL, g_raw }, - { "PACKAGE:", NULL, NULL, NULL, NULL, g_package_file }, - { "RECOVERY:", g_mtd_device, NULL, "recovery", "/", g_raw }, - { "SDCARD:", "/dev/block/mmcblk0p1", "/dev/block/mmcblk0", NULL, "/sdcard", "vfat" }, - { "SYSTEM:", g_mtd_device, NULL, "system", "/system", "yaffs2" }, - { "TMP:", NULL, NULL, NULL, "/tmp", NULL }, -}; -#define NUM_ROOTS (sizeof(g_roots) / sizeof(g_roots[0])) - -// TODO: for SDCARD:, try /dev/block/mmcblk0 if mmcblk0p1 fails - -static const RootInfo * -get_root_info_for_path(const char *root_path) -{ - const char *c; - - /* Find the first colon. - */ - c = root_path; - while (*c != '\0' && *c != ':') { - c++; - } - if (*c == '\0') { - return NULL; - } - size_t len = c - root_path + 1; - size_t i; - for (i = 0; i < NUM_ROOTS; i++) { - RootInfo *info = &g_roots[i]; - if (strncmp(info->name, root_path, len) == 0) { - return info; - } - } - return NULL; -} - -static const ZipArchive *g_package = NULL; -static char *g_package_path = NULL; - -int -register_package_root(const ZipArchive *package, const char *package_path) -{ - if (package != NULL) { - package_path = strdup(package_path); - if (package_path == NULL) { - return -1; - } - g_package_path = (char *)package_path; - } else { - free(g_package_path); - g_package_path = NULL; - } - g_package = package; - return 0; -} - -int -is_package_root_path(const char *root_path) -{ - const RootInfo *info = get_root_info_for_path(root_path); - return info != NULL && info->filesystem == g_package_file; -} - -const char * -translate_package_root_path(const char *root_path, - char *out_buf, size_t out_buf_len, const ZipArchive **out_package) -{ - const RootInfo *info = get_root_info_for_path(root_path); - if (info == NULL || info->filesystem != g_package_file) { - return NULL; - } - - /* Strip the package root off of the path. - */ - size_t root_len = strlen(info->name); - root_path += root_len; - size_t root_path_len = strlen(root_path); - - if (out_buf_len < root_path_len + 1) { - return NULL; - } - strcpy(out_buf, root_path); - *out_package = g_package; - return out_buf; -} - -/* Takes a string like "SYSTEM:lib" and turns it into a string - * like "/system/lib". The translated path is put in out_buf, - * and out_buf is returned if the translation succeeded. - */ -const char * -translate_root_path(const char *root_path, char *out_buf, size_t out_buf_len) -{ - if (out_buf_len < 1) { - return NULL; - } - - const RootInfo *info = get_root_info_for_path(root_path); - if (info == NULL || info->mount_point == NULL) { - return NULL; - } - - /* Find the relative part of the non-root part of the path. - */ - root_path += strlen(info->name); // strip off the "root:" - while (*root_path != '\0' && *root_path == '/') { - root_path++; - } - - size_t mp_len = strlen(info->mount_point); - size_t rp_len = strlen(root_path); - if (mp_len + 1 + rp_len + 1 > out_buf_len) { - return NULL; - } - - /* Glue the mount point to the relative part of the path. - */ - memcpy(out_buf, info->mount_point, mp_len); - if (out_buf[mp_len - 1] != '/') out_buf[mp_len++] = '/'; - - memcpy(out_buf + mp_len, root_path, rp_len); - out_buf[mp_len + rp_len] = '\0'; - - return out_buf; -} - -static int -internal_root_mounted(const RootInfo *info) -{ - if (info->mount_point == NULL) { - return -1; - } -//xxx if TMP: (or similar) just say "yes" - - /* See if this root is already mounted. - */ - int ret = scan_mounted_volumes(); - if (ret < 0) { - return ret; - } - const MountedVolume *volume; - volume = find_mounted_volume_by_mount_point(info->mount_point); - if (volume != NULL) { - /* It's already mounted. - */ - return 0; - } - return -1; -} - -int -is_root_path_mounted(const char *root_path) -{ - const RootInfo *info = get_root_info_for_path(root_path); - if (info == NULL) { - return -1; - } - return internal_root_mounted(info) >= 0; -} - -int -ensure_root_path_mounted(const char *root_path) -{ - const RootInfo *info = get_root_info_for_path(root_path); - if (info == NULL) { - return -1; - } - - int ret = internal_root_mounted(info); - if (ret >= 0) { - /* It's already mounted. - */ - return 0; - } - - /* It's not mounted. - */ - if (info->device == g_mtd_device) { - if (info->partition_name == NULL) { - return -1; - } -//TODO: make the mtd stuff scan once when it needs to - mtd_scan_partitions(); - const MtdPartition *partition; - partition = mtd_find_partition_by_name(info->partition_name); - if (partition == NULL) { - return -1; - } - return mtd_mount_partition(partition, info->mount_point, - info->filesystem, 0); - } - - if (info->device == NULL || info->mount_point == NULL || - info->filesystem == NULL || - info->filesystem == g_raw || - info->filesystem == g_package_file) { - return -1; - } - - mkdir(info->mount_point, 0755); // in case it doesn't already exist - if (mount(info->device, info->mount_point, info->filesystem, - MS_NOATIME | MS_NODEV | MS_NODIRATIME, "")) { - if (info->device2 == NULL) { - LOGE("Can't mount %s\n(%s)\n", info->device, strerror(errno)); - return -1; - } else if (mount(info->device2, info->mount_point, info->filesystem, - MS_NOATIME | MS_NODEV | MS_NODIRATIME, "")) { - LOGE("Can't mount %s (or %s)\n(%s)\n", - info->device, info->device2, strerror(errno)); - return -1; - } - } - return 0; -} - -int -ensure_root_path_unmounted(const char *root_path) -{ - const RootInfo *info = get_root_info_for_path(root_path); - if (info == NULL) { - return -1; - } - if (info->mount_point == NULL) { - /* This root can't be mounted, so by definition it isn't. - */ - return 0; - } -//xxx if TMP: (or similar) just return error - - /* See if this root is already mounted. - */ - int ret = scan_mounted_volumes(); - if (ret < 0) { - return ret; - } - const MountedVolume *volume; - volume = find_mounted_volume_by_mount_point(info->mount_point); - if (volume == NULL) { - /* It's not mounted. - */ - return 0; - } - - return unmount_mounted_volume(volume); -} - -const MtdPartition * -get_root_mtd_partition(const char *root_path) -{ - const RootInfo *info = get_root_info_for_path(root_path); - if (info == NULL || info->device != g_mtd_device || - info->partition_name == NULL) - { - return NULL; - } - mtd_scan_partitions(); - return mtd_find_partition_by_name(info->partition_name); -} - -int -format_root_device(const char *root) -{ - /* Be a little safer here; require that "root" is just - * a device with no relative path after it. - */ - const char *c = root; - while (*c != '\0' && *c != ':') { - c++; - } - if (c[0] != ':' || c[1] != '\0') { - LOGW("format_root_device: bad root name \"%s\"\n", root); - return -1; - } - - const RootInfo *info = get_root_info_for_path(root); - if (info == NULL || info->device == NULL) { - LOGW("format_root_device: can't resolve \"%s\"\n", root); - return -1; - } - if (info->mount_point != NULL) { - /* Don't try to format a mounted device. - */ - int ret = ensure_root_path_unmounted(root); - if (ret < 0) { - LOGW("format_root_device: can't unmount \"%s\"\n", root); - return ret; - } - } - - /* Format the device. - */ - if (info->device == g_mtd_device) { - mtd_scan_partitions(); - const MtdPartition *partition; - partition = mtd_find_partition_by_name(info->partition_name); - if (partition == NULL) { - LOGW("format_root_device: can't find mtd partition \"%s\"\n", - info->partition_name); - return -1; - } - if (info->filesystem == g_raw || !strcmp(info->filesystem, "yaffs2")) { - MtdWriteContext *write = mtd_write_partition(partition); - if (write == NULL) { - LOGW("format_root_device: can't open \"%s\"\n", root); - return -1; - } else if (mtd_erase_blocks(write, -1) == (off_t) -1) { - LOGW("format_root_device: can't erase \"%s\"\n", root); - mtd_write_close(write); - return -1; - } else if (mtd_write_close(write)) { - LOGW("format_root_device: can't close \"%s\"\n", root); - return -1; - } else { - return 0; - } - } - } -//TODO: handle other device types (sdcard, etc.) - LOGW("format_root_device: can't handle non-mtd device \"%s\"\n", root); - return -1; -} -- cgit v1.2.3