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      1 /*
      2 **
      3 ** Copyright 2008, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #define LOG_TAG "installd"
     19 
     20 #include <stdio.h>
     21 #include <stdlib.h>
     22 #include <sys/stat.h>
     23 #include <dirent.h>
     24 #include <unistd.h>
     25 #include <ctype.h>
     26 #include <fcntl.h>
     27 #include <errno.h>
     28 #include <utime.h>
     29 #include <sys/socket.h>
     30 #include <sys/types.h>
     31 #include <sys/wait.h>
     32 
     33 #include <cutils/sockets.h>
     34 #include <cutils/log.h>
     35 #include <cutils/properties.h>
     36 
     37 #include <private/android_filesystem_config.h>
     38 
     39 #if INCLUDE_SYS_MOUNT_FOR_STATFS
     40 #include <sys/mount.h>
     41 #else
     42 #include <sys/statfs.h>
     43 #endif
     44 
     45 #define SOCKET_PATH "installd"
     46 
     47 
     48 /* elements combined with a valid package name to form paths */
     49 
     50 #define PKG_DIR_PREFIX         "/data/data/"
     51 #define PKG_DIR_POSTFIX        ""
     52 
     53 #define PKG_LIB_PREFIX         "/data/data/"
     54 #define PKG_LIB_POSTFIX        "/lib"
     55 
     56 #define CACHE_DIR_PREFIX       "/data/data/"
     57 #define CACHE_DIR_POSTFIX      "/cache"
     58 
     59 #define APK_DIR_PREFIX         "/data/app/"
     60 
     61 /* other handy constants */
     62 
     63 #define PROTECTED_DIR_PREFIX  "/data/app-private/"
     64 #define SDCARD_DIR_PREFIX  getenv("ASEC_MOUNTPOINT")
     65 
     66 #define DALVIK_CACHE_PREFIX   "/data/dalvik-cache/"
     67 #define DALVIK_CACHE_POSTFIX  "/classes.dex"
     68 
     69 #define UPDATE_COMMANDS_DIR_PREFIX  "/system/etc/updatecmds/"
     70 
     71 #define PKG_NAME_MAX  128   /* largest allowed package name */
     72 #define PKG_PATH_MAX  256   /* max size of any path we use */
     73 
     74 
     75 /* util.c */
     76 
     77 int create_pkg_path(char path[PKG_PATH_MAX],
     78                     const char *prefix,
     79                     const char *pkgname,
     80                     const char *postfix);
     81 
     82 int create_cache_path(char path[PKG_PATH_MAX], const char *src);
     83 
     84 int delete_dir_contents(const char *pathname,
     85                         int also_delete_dir,
     86                         const char *ignore);
     87 
     88 int delete_dir_contents_fd(int dfd, const char *name);
     89 
     90 /* commands.c */
     91 
     92 int install(const char *pkgname, uid_t uid, gid_t gid);
     93 int uninstall(const char *pkgname);
     94 int renamepkg(const char *oldpkgname, const char *newpkgname);
     95 int delete_user_data(const char *pkgname);
     96 int delete_cache(const char *pkgname);
     97 int move_dex(const char *src, const char *dst);
     98 int rm_dex(const char *path);
     99 int protect(char *pkgname, gid_t gid);
    100 int get_size(const char *pkgname, const char *apkpath, const char *fwdlock_apkpath,
    101              int *codesize, int *datasize, int *cachesize);
    102 int free_cache(int free_size);
    103 int dexopt(const char *apk_path, uid_t uid, int is_public);
    104 int movefiles();
    105