blob: 36c3e8c3f5eaf156bcdb5ed75c4619be6d47a37e [file] [log] [blame]
** 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
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** See the License for the specific language governing permissions and
** limitations under the License.
#define LOG_TAG "installd"
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
#include <ctype.h>
#include <fcntl.h>
#include <errno.h>
#include <utime.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <cutils/fs.h>
#include <cutils/sockets.h>
#include <cutils/log.h>
#include <cutils/properties.h>
#include <cutils/multiuser.h>
#include <private/android_filesystem_config.h>
#include <sys/mount.h>
#include <sys/statfs.h>
#define SOCKET_PATH "installd"
/* elements combined with a valid package name to form paths */
#define PRIMARY_USER_PREFIX "data/"
#define PKG_DIR_POSTFIX ""
#define PKG_LIB_POSTFIX "/lib"
#define CACHE_DIR_POSTFIX "/cache"
#define CODE_CACHE_DIR_POSTFIX "/code_cache"
#define APP_SUBDIR "app/" // sub-directory under ANDROID_DATA
#define PRIV_APP_SUBDIR "priv-app/" // sub-directory under ANDROID_DATA
#define APP_LIB_SUBDIR "app-lib/" // sub-directory under ANDROID_DATA
#define MEDIA_SUBDIR "media/" // sub-directory under ANDROID_DATA
/* other handy constants */
#define PRIVATE_APP_SUBDIR "app-private/" // sub-directory under ANDROID_DATA
#define DALVIK_CACHE_PREFIX "/data/dalvik-cache/"
#define DALVIK_CACHE_POSTFIX "/classes.dex"
#define UPDATE_COMMANDS_DIR_PREFIX "/system/etc/updatecmds/"
#define IDMAP_PREFIX "/data/resource-cache/"
#define IDMAP_SUFFIX "@idmap"
#define PKG_NAME_MAX 128 /* largest allowed package name */
#define PKG_PATH_MAX 256 /* max size of any path we use */
/* data structures */
typedef struct {
char* path;
size_t len;
} dir_rec_t;
typedef struct {
size_t count;
dir_rec_t* dirs;
} dir_rec_array_t;
extern dir_rec_t android_app_dir;
extern dir_rec_t android_app_private_dir;
extern dir_rec_t android_app_lib_dir;
extern dir_rec_t android_data_dir;
extern dir_rec_t android_asec_dir;
extern dir_rec_t android_media_dir;
extern dir_rec_array_t android_system_dirs;
typedef struct cache_dir_struct {
struct cache_dir_struct* parent;
int32_t childCount;
int32_t hiddenCount;
int32_t deleted;
char name[];
} cache_dir_t;
typedef struct {
cache_dir_t* dir;
time_t modTime;
char name[];
} cache_file_t;
typedef struct {
size_t numDirs;
size_t availDirs;
cache_dir_t** dirs;
size_t numFiles;
size_t availFiles;
cache_file_t** files;
size_t numCollected;
void* memBlocks;
int8_t* curMemBlockAvail;
int8_t* curMemBlockEnd;
} cache_t;
/* util.c */
int create_pkg_path_in_dir(char path[PKG_PATH_MAX],
const dir_rec_t* dir,
const char* pkgname,
const char* postfix);
int create_pkg_path(char path[PKG_PATH_MAX],
const char *pkgname,
const char *postfix,
userid_t userid);
int create_user_path(char path[PKG_PATH_MAX],
userid_t userid);
int create_user_media_path(char path[PKG_PATH_MAX], userid_t userid);
int create_user_config_path(char path[PKG_PATH_MAX], userid_t userid);
int create_move_path(char path[PKG_PATH_MAX],
const char* pkgname,
const char* leaf,
userid_t userid);
int is_valid_package_name(const char* pkgname);
int create_cache_path(char path[PKG_PATH_MAX], const char *src,
const char *instruction_set);
int delete_dir_contents(const char *pathname,
int also_delete_dir,
int (*exclusion_predicate)(const char *name, const int is_dir));
int delete_dir_contents_fd(int dfd, const char *name);
int copy_dir_files(const char *srcname, const char *dstname, uid_t owner, gid_t group);
int lookup_media_dir(char basepath[PATH_MAX], const char *dir);
int64_t data_disk_free();
cache_t* start_cache_collection();
void add_cache_files(cache_t* cache, const char *basepath, const char *cachedir);
void clear_cache_files(cache_t* cache, int64_t free_size);
void finish_cache_collection(cache_t* cache);
int validate_system_app_path(const char* path);
int get_path_from_env(dir_rec_t* rec, const char* var);
int get_path_from_string(dir_rec_t* rec, const char* path);
int copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix);
int validate_apk_path(const char *path);
int append_and_increment(char** dst, const char* src, size_t* dst_size);
char *build_string2(char *s1, char *s2);
char *build_string3(char *s1, char *s2, char *s3);
int ensure_dir(const char* path, mode_t mode, uid_t uid, gid_t gid);
int ensure_media_user_dirs(userid_t userid);
int ensure_config_user_dirs(userid_t userid);
int create_profile_file(const char *pkgname, gid_t gid);
void remove_profile_file(const char *pkgname);
/* commands.c */
int install(const char *pkgname, uid_t uid, gid_t gid, const char *seinfo);
int uninstall(const char *pkgname, userid_t userid);
int renamepkg(const char *oldpkgname, const char *newpkgname);
int fix_uid(const char *pkgname, uid_t uid, gid_t gid);
int delete_user_data(const char *pkgname, userid_t userid);
int make_user_data(const char *pkgname, uid_t uid, userid_t userid, const char* seinfo);
int make_user_config(userid_t userid);
int delete_user(userid_t userid);
int delete_cache(const char *pkgname, userid_t userid);
int delete_code_cache(const char *pkgname, userid_t userid);
int move_dex(const char *src, const char *dst, const char *instruction_set);
int rm_dex(const char *path, const char *instruction_set);
int protect(char *pkgname, gid_t gid);
int get_size(const char *pkgname, userid_t userid, const char *apkpath, const char *libdirpath,
const char *fwdlock_apkpath, const char *asecpath, const char *instruction_set,
int64_t *codesize, int64_t *datasize, int64_t *cachesize, int64_t *asecsize);
int free_cache(int64_t free_size);
int dexopt(const char *apk_path, uid_t uid, bool is_public, const char *pkgName,
const char *instruction_set, bool vm_safe_mode, bool should_relocate);
int movefiles();
int linklib(const char* target, const char* source, int userId);
int idmap(const char *target_path, const char *overlay_path, uid_t uid);
int restorecon_data();