| /* |
| ** 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. |
| */ |
| |
| #include "installd.h" |
| |
| int install(const char *pkgname, int encrypted_fs_flag, uid_t uid, gid_t gid) |
| { |
| char pkgdir[PKG_PATH_MAX]; |
| char libdir[PKG_PATH_MAX]; |
| |
| if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) { |
| LOGE("invalid uid/gid: %d %d\n", uid, gid); |
| return -1; |
| } |
| |
| if (encrypted_fs_flag == USE_UNENCRYPTED_FS) { |
| if (create_pkg_path(pkgdir, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| if (create_pkg_path(libdir, PKG_LIB_PREFIX, pkgname, PKG_LIB_POSTFIX)) |
| return -1; |
| } else { |
| if (create_pkg_path(pkgdir, PKG_SEC_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| if (create_pkg_path(libdir, PKG_SEC_LIB_PREFIX, pkgname, PKG_LIB_POSTFIX)) |
| return -1; |
| } |
| |
| if (mkdir(pkgdir, 0751) < 0) { |
| LOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno)); |
| return -errno; |
| } |
| if (chown(pkgdir, uid, gid) < 0) { |
| LOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno)); |
| unlink(pkgdir); |
| return -errno; |
| } |
| if (mkdir(libdir, 0755) < 0) { |
| LOGE("cannot create dir '%s': %s\n", libdir, strerror(errno)); |
| unlink(pkgdir); |
| return -errno; |
| } |
| if (chown(libdir, AID_SYSTEM, AID_SYSTEM) < 0) { |
| LOGE("cannot chown dir '%s': %s\n", libdir, strerror(errno)); |
| unlink(libdir); |
| unlink(pkgdir); |
| return -errno; |
| } |
| return 0; |
| } |
| |
| int uninstall(const char *pkgname, int encrypted_fs_flag) |
| { |
| char pkgdir[PKG_PATH_MAX]; |
| |
| if (encrypted_fs_flag == USE_UNENCRYPTED_FS) { |
| if (create_pkg_path(pkgdir, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| } else { |
| if (create_pkg_path(pkgdir, PKG_SEC_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| } |
| |
| /* delete contents AND directory, no exceptions */ |
| return delete_dir_contents(pkgdir, 1, 0); |
| } |
| |
| int renamepkg(const char *oldpkgname, const char *newpkgname, int encrypted_fs_flag) |
| { |
| char oldpkgdir[PKG_PATH_MAX]; |
| char newpkgdir[PKG_PATH_MAX]; |
| |
| if (encrypted_fs_flag == USE_UNENCRYPTED_FS) { |
| if (create_pkg_path(oldpkgdir, PKG_DIR_PREFIX, oldpkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| if (create_pkg_path(newpkgdir, PKG_DIR_PREFIX, newpkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| } else { |
| if (create_pkg_path(oldpkgdir, PKG_SEC_DIR_PREFIX, oldpkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| if (create_pkg_path(newpkgdir, PKG_SEC_DIR_PREFIX, newpkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| } |
| |
| if (rename(oldpkgdir, newpkgdir) < 0) { |
| LOGE("cannot rename dir '%s' to '%s': %s\n", oldpkgdir, newpkgdir, strerror(errno)); |
| return -errno; |
| } |
| return 0; |
| } |
| |
| int delete_user_data(const char *pkgname, int encrypted_fs_flag) |
| { |
| char pkgdir[PKG_PATH_MAX]; |
| |
| if (encrypted_fs_flag == USE_UNENCRYPTED_FS) { |
| if (create_pkg_path(pkgdir, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| } else { |
| if (create_pkg_path(pkgdir, PKG_SEC_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) |
| return -1; |
| } |
| |
| /* delete contents, excluding "lib", but not the directory itself */ |
| return delete_dir_contents(pkgdir, 0, "lib"); |
| } |
| |
| int delete_cache(const char *pkgname, int encrypted_fs_flag) |
| { |
| char cachedir[PKG_PATH_MAX]; |
| |
| if (encrypted_fs_flag == USE_UNENCRYPTED_FS) { |
| if (create_pkg_path(cachedir, CACHE_DIR_PREFIX, pkgname, CACHE_DIR_POSTFIX)) |
| return -1; |
| } else { |
| if (create_pkg_path(cachedir, CACHE_SEC_DIR_PREFIX, pkgname, CACHE_DIR_POSTFIX)) |
| return -1; |
| } |
| |
| /* delete contents, not the directory, no exceptions */ |
| return delete_dir_contents(cachedir, 0, 0); |
| } |
| |
| /* TODO(oam): depending on use case (ecryptfs or dmcrypt) |
| * change implementation |
| */ |
| static int disk_free() |
| { |
| struct statfs sfs; |
| if (statfs(PKG_DIR_PREFIX, &sfs) == 0) { |
| return sfs.f_bavail * sfs.f_bsize; |
| } else { |
| LOGE("Couldn't statfs " PKG_DIR_PREFIX ": %s\n", strerror(errno)); |
| return -1; |
| } |
| } |
| |
| /* Try to ensure free_size bytes of storage are available. |
| * Returns 0 on success. |
| * This is rather simple-minded because doing a full LRU would |
| * be potentially memory-intensive, and without atime it would |
| * also require that apps constantly modify file metadata even |
| * when just reading from the cache, which is pretty awful. |
| */ |
| int free_cache(int free_size) |
| { |
| const char *name; |
| int dfd, subfd; |
| DIR *d; |
| struct dirent *de; |
| int avail; |
| |
| avail = disk_free(); |
| if (avail < 0) return -1; |
| |
| LOGI("free_cache(%d) avail %d\n", free_size, avail); |
| if (avail >= free_size) return 0; |
| |
| /* First try encrypted dir */ |
| d = opendir(PKG_SEC_DIR_PREFIX); |
| if (d == NULL) { |
| LOGE("cannot open %s: %s\n", PKG_SEC_DIR_PREFIX, strerror(errno)); |
| } else { |
| dfd = dirfd(d); |
| |
| while ((de = readdir(d))) { |
| if (de->d_type != DT_DIR) continue; |
| name = de->d_name; |
| |
| /* always skip "." and ".." */ |
| if (name[0] == '.') { |
| if (name[1] == 0) continue; |
| if ((name[1] == '.') && (name[2] == 0)) continue; |
| } |
| |
| subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); |
| if (subfd < 0) continue; |
| |
| delete_dir_contents_fd(subfd, "cache"); |
| close(subfd); |
| |
| avail = disk_free(); |
| if (avail >= free_size) { |
| closedir(d); |
| return 0; |
| } |
| } |
| closedir(d); |
| } |
| |
| /* Next try unencrypted dir... */ |
| d = opendir(PKG_DIR_PREFIX); |
| if (d == NULL) { |
| LOGE("cannot open %s: %s\n", PKG_DIR_PREFIX, strerror(errno)); |
| return -1; |
| } |
| dfd = dirfd(d); |
| |
| while ((de = readdir(d))) { |
| if (de->d_type != DT_DIR) continue; |
| name = de->d_name; |
| |
| /* always skip "." and ".." */ |
| if (name[0] == '.') { |
| if (name[1] == 0) continue; |
| if ((name[1] == '.') && (name[2] == 0)) continue; |
| } |
| |
| subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); |
| if (subfd < 0) continue; |
| |
| delete_dir_contents_fd(subfd, "cache"); |
| close(subfd); |
| |
| avail = disk_free(); |
| if (avail >= free_size) { |
| closedir(d); |
| return 0; |
| } |
| } |
| closedir(d); |
| |
| /* Fail case - not possible to free space */ |
| return -1; |
| } |
| |
| /* used by move_dex, rm_dex, etc to ensure that the provided paths |
| * don't point anywhere other than at the APK_DIR_PREFIX |
| */ |
| static int is_valid_apk_path(const char *path) |
| { |
| int len = strlen(APK_DIR_PREFIX); |
| int nosubdircheck = 0; |
| if (strncmp(path, APK_DIR_PREFIX, len)) { |
| len = strlen(PROTECTED_DIR_PREFIX); |
| if (strncmp(path, PROTECTED_DIR_PREFIX, len)) { |
| len = strlen(SDCARD_DIR_PREFIX); |
| if (strncmp(path, SDCARD_DIR_PREFIX, len)) { |
| LOGE("invalid apk path '%s' (bad prefix)\n", path); |
| return 0; |
| } else { |
| nosubdircheck = 1; |
| } |
| } |
| } |
| if ((nosubdircheck != 1) && strchr(path + len, '/')) { |
| LOGE("invalid apk path '%s' (subdir?)\n", path); |
| return 0; |
| } |
| if (path[len] == '.') { |
| LOGE("invalid apk path '%s' (trickery)\n", path); |
| return 0; |
| } |
| return 1; |
| } |
| |
| int move_dex(const char *src, const char *dst) |
| { |
| char src_dex[PKG_PATH_MAX]; |
| char dst_dex[PKG_PATH_MAX]; |
| |
| if (!is_valid_apk_path(src)) return -1; |
| if (!is_valid_apk_path(dst)) return -1; |
| |
| if (create_cache_path(src_dex, src)) return -1; |
| if (create_cache_path(dst_dex, dst)) return -1; |
| |
| LOGI("move %s -> %s\n", src_dex, dst_dex); |
| if (rename(src_dex, dst_dex) < 0) { |
| LOGE("Couldn't move %s: %s\n", src_dex, strerror(errno)); |
| return -1; |
| } else { |
| return 0; |
| } |
| } |
| |
| int rm_dex(const char *path) |
| { |
| char dex_path[PKG_PATH_MAX]; |
| |
| if (!is_valid_apk_path(path)) return -1; |
| if (create_cache_path(dex_path, path)) return -1; |
| |
| LOGI("unlink %s\n", dex_path); |
| if (unlink(dex_path) < 0) { |
| LOGE("Couldn't unlink %s: %s\n", dex_path, strerror(errno)); |
| return -1; |
| } else { |
| return 0; |
| } |
| } |
| |
| int protect(char *pkgname, gid_t gid) |
| { |
| struct stat s; |
| char pkgpath[PKG_PATH_MAX]; |
| |
| if (gid < AID_SYSTEM) return -1; |
| |
| if (create_pkg_path(pkgpath, PROTECTED_DIR_PREFIX, pkgname, ".apk")) |
| return -1; |
| |
| if (stat(pkgpath, &s) < 0) return -1; |
| |
| if (chown(pkgpath, s.st_uid, gid) < 0) { |
| LOGE("failed to chgrp '%s': %s\n", pkgpath, strerror(errno)); |
| return -1; |
| } |
| |
| if (chmod(pkgpath, S_IRUSR|S_IWUSR|S_IRGRP) < 0) { |
| LOGE("failed to chmod '%s': %s\n", pkgpath, strerror(errno)); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static int stat_size(struct stat *s) |
| { |
| int blksize = s->st_blksize; |
| int size = s->st_size; |
| |
| if (blksize) { |
| /* round up to filesystem block size */ |
| size = (size + blksize - 1) & (~(blksize - 1)); |
| } |
| |
| return size; |
| } |
| |
| static int calculate_dir_size(int dfd) |
| { |
| int size = 0; |
| struct stat s; |
| DIR *d; |
| struct dirent *de; |
| |
| d = fdopendir(dfd); |
| if (d == NULL) { |
| close(dfd); |
| return 0; |
| } |
| |
| while ((de = readdir(d))) { |
| const char *name = de->d_name; |
| if (de->d_type == DT_DIR) { |
| int subfd; |
| /* always skip "." and ".." */ |
| if (name[0] == '.') { |
| if (name[1] == 0) continue; |
| if ((name[1] == '.') && (name[2] == 0)) continue; |
| } |
| subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); |
| if (subfd >= 0) { |
| size += calculate_dir_size(subfd); |
| } |
| } else { |
| if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { |
| size += stat_size(&s); |
| } |
| } |
| } |
| closedir(d); |
| return size; |
| } |
| |
| int get_size(const char *pkgname, const char *apkpath, |
| const char *fwdlock_apkpath, |
| int *_codesize, int *_datasize, int *_cachesize, int encrypted_fs_flag) |
| { |
| DIR *d; |
| int dfd; |
| struct dirent *de; |
| struct stat s; |
| char path[PKG_PATH_MAX]; |
| |
| int codesize = 0; |
| int datasize = 0; |
| int cachesize = 0; |
| |
| /* count the source apk as code -- but only if it's not |
| * on the /system partition and its not on the sdcard. |
| */ |
| if (strncmp(apkpath, "/system", 7) != 0 && |
| strncmp(apkpath, SDCARD_DIR_PREFIX, 7) != 0) { |
| if (stat(apkpath, &s) == 0) { |
| codesize += stat_size(&s); |
| } |
| } |
| /* count the forward locked apk as code if it is given |
| */ |
| if (fwdlock_apkpath != NULL && fwdlock_apkpath[0] != '!') { |
| if (stat(fwdlock_apkpath, &s) == 0) { |
| codesize += stat_size(&s); |
| } |
| } |
| /* count the cached dexfile as code */ |
| if (!create_cache_path(path, apkpath)) { |
| if (stat(path, &s) == 0) { |
| codesize += stat_size(&s); |
| } |
| } |
| |
| if (encrypted_fs_flag == 0) { |
| if (create_pkg_path(path, PKG_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) { |
| goto done; |
| } |
| } else { |
| if (create_pkg_path(path, PKG_SEC_DIR_PREFIX, pkgname, PKG_DIR_POSTFIX)) { |
| goto done; |
| } |
| } |
| |
| d = opendir(path); |
| if (d == NULL) { |
| goto done; |
| } |
| dfd = dirfd(d); |
| |
| /* most stuff in the pkgdir is data, except for the "cache" |
| * directory and below, which is cache, and the "lib" directory |
| * and below, which is code... |
| */ |
| while ((de = readdir(d))) { |
| const char *name = de->d_name; |
| |
| if (de->d_type == DT_DIR) { |
| int subfd; |
| /* always skip "." and ".." */ |
| if (name[0] == '.') { |
| if (name[1] == 0) continue; |
| if ((name[1] == '.') && (name[2] == 0)) continue; |
| } |
| subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); |
| if (subfd >= 0) { |
| int size = calculate_dir_size(subfd); |
| if (!strcmp(name,"lib")) { |
| codesize += size; |
| } else if(!strcmp(name,"cache")) { |
| cachesize += size; |
| } else { |
| datasize += size; |
| } |
| } |
| } else { |
| if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { |
| datasize += stat_size(&s); |
| } |
| } |
| } |
| closedir(d); |
| done: |
| *_codesize = codesize; |
| *_datasize = datasize; |
| *_cachesize = cachesize; |
| return 0; |
| } |
| |
| |
| /* a simpler version of dexOptGenerateCacheFileName() */ |
| int create_cache_path(char path[PKG_PATH_MAX], const char *src) |
| { |
| char *tmp; |
| int srclen; |
| int dstlen; |
| |
| srclen = strlen(src); |
| |
| /* demand that we are an absolute path */ |
| if ((src == 0) || (src[0] != '/') || strstr(src,"..")) { |
| return -1; |
| } |
| |
| if (srclen > PKG_PATH_MAX) { // XXX: PKG_NAME_MAX? |
| return -1; |
| } |
| |
| dstlen = srclen + strlen(DALVIK_CACHE_PREFIX) + |
| strlen(DALVIK_CACHE_POSTFIX) + 1; |
| |
| if (dstlen > PKG_PATH_MAX) { |
| return -1; |
| } |
| |
| sprintf(path,"%s%s%s", |
| DALVIK_CACHE_PREFIX, |
| src + 1, /* skip the leading / */ |
| DALVIK_CACHE_POSTFIX); |
| |
| for(tmp = path + strlen(DALVIK_CACHE_PREFIX); *tmp; tmp++) { |
| if (*tmp == '/') { |
| *tmp = '@'; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void run_dexopt(int zip_fd, int odex_fd, const char* input_file_name, |
| const char* dexopt_flags) |
| { |
| static const char* DEX_OPT_BIN = "/system/bin/dexopt"; |
| static const int MAX_INT_LEN = 12; // '-'+10dig+'\0' -OR- 0x+8dig |
| char zip_num[MAX_INT_LEN]; |
| char odex_num[MAX_INT_LEN]; |
| |
| sprintf(zip_num, "%d", zip_fd); |
| sprintf(odex_num, "%d", odex_fd); |
| |
| execl(DEX_OPT_BIN, DEX_OPT_BIN, "--zip", zip_num, odex_num, input_file_name, |
| dexopt_flags, (char*) NULL); |
| LOGE("execl(%s) failed: %s\n", DEX_OPT_BIN, strerror(errno)); |
| } |
| |
| static int wait_dexopt(pid_t pid, const char* apk_path) |
| { |
| int status; |
| pid_t got_pid; |
| |
| /* |
| * Wait for the optimization process to finish. |
| */ |
| while (1) { |
| got_pid = waitpid(pid, &status, 0); |
| if (got_pid == -1 && errno == EINTR) { |
| printf("waitpid interrupted, retrying\n"); |
| } else { |
| break; |
| } |
| } |
| if (got_pid != pid) { |
| LOGW("waitpid failed: wanted %d, got %d: %s\n", |
| (int) pid, (int) got_pid, strerror(errno)); |
| return 1; |
| } |
| |
| if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { |
| LOGD("DexInv: --- END '%s' (success) ---\n", apk_path); |
| return 0; |
| } else { |
| LOGW("DexInv: --- END '%s' --- status=0x%04x, process failed\n", |
| apk_path, status); |
| return status; /* always nonzero */ |
| } |
| } |
| |
| int dexopt(const char *apk_path, uid_t uid, int is_public) |
| { |
| struct utimbuf ut; |
| struct stat apk_stat, dex_stat; |
| char dex_path[PKG_PATH_MAX]; |
| char dexopt_flags[PROPERTY_VALUE_MAX]; |
| char *end; |
| int res, zip_fd=-1, odex_fd=-1; |
| |
| /* Before anything else: is there a .odex file? If so, we have |
| * pre-optimized the apk and there is nothing to do here. |
| */ |
| if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) { |
| return -1; |
| } |
| |
| /* platform-specific flags affecting optimization and verification */ |
| property_get("dalvik.vm.dexopt-flags", dexopt_flags, ""); |
| |
| strcpy(dex_path, apk_path); |
| end = strrchr(dex_path, '.'); |
| if (end != NULL) { |
| strcpy(end, ".odex"); |
| if (stat(dex_path, &dex_stat) == 0) { |
| return 0; |
| } |
| } |
| |
| if (create_cache_path(dex_path, apk_path)) { |
| return -1; |
| } |
| |
| memset(&apk_stat, 0, sizeof(apk_stat)); |
| stat(apk_path, &apk_stat); |
| |
| zip_fd = open(apk_path, O_RDONLY, 0); |
| if (zip_fd < 0) { |
| LOGE("dexopt cannot open '%s' for input\n", apk_path); |
| return -1; |
| } |
| |
| unlink(dex_path); |
| odex_fd = open(dex_path, O_RDWR | O_CREAT | O_EXCL, 0644); |
| if (odex_fd < 0) { |
| LOGE("dexopt cannot open '%s' for output\n", dex_path); |
| goto fail; |
| } |
| if (fchown(odex_fd, AID_SYSTEM, uid) < 0) { |
| LOGE("dexopt cannot chown '%s'\n", dex_path); |
| goto fail; |
| } |
| if (fchmod(odex_fd, |
| S_IRUSR|S_IWUSR|S_IRGRP | |
| (is_public ? S_IROTH : 0)) < 0) { |
| LOGE("dexopt cannot chmod '%s'\n", dex_path); |
| goto fail; |
| } |
| |
| LOGD("DexInv: --- BEGIN '%s' ---\n", apk_path); |
| |
| pid_t pid; |
| pid = fork(); |
| if (pid == 0) { |
| /* child -- drop privileges before continuing */ |
| if (setgid(uid) != 0) { |
| LOGE("setgid(%d) failed during dexopt\n", uid); |
| exit(64); |
| } |
| if (setuid(uid) != 0) { |
| LOGE("setuid(%d) during dexopt\n", uid); |
| exit(65); |
| } |
| if (flock(odex_fd, LOCK_EX | LOCK_NB) != 0) { |
| LOGE("flock(%s) failed: %s\n", dex_path, strerror(errno)); |
| exit(66); |
| } |
| |
| run_dexopt(zip_fd, odex_fd, apk_path, dexopt_flags); |
| exit(67); /* only get here on exec failure */ |
| } else { |
| res = wait_dexopt(pid, apk_path); |
| if (res != 0) { |
| LOGE("dexopt failed on '%s' res = %d\n", dex_path, res); |
| goto fail; |
| } |
| } |
| |
| ut.actime = apk_stat.st_atime; |
| ut.modtime = apk_stat.st_mtime; |
| utime(dex_path, &ut); |
| |
| close(odex_fd); |
| close(zip_fd); |
| return 0; |
| |
| fail: |
| if (odex_fd >= 0) { |
| close(odex_fd); |
| unlink(dex_path); |
| } |
| if (zip_fd >= 0) { |
| close(zip_fd); |
| } |
| return -1; |
| } |
| |
| int create_move_path(char path[PKG_PATH_MAX], |
| const char* prefix, |
| const char* pkgname, |
| const char* leaf) |
| { |
| if ((strlen(prefix) + strlen(pkgname) + strlen(leaf) + 1) >= PKG_PATH_MAX) { |
| return -1; |
| } |
| |
| sprintf(path, "%s%s/%s", prefix, pkgname, leaf); |
| return 0; |
| } |
| |
| void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, |
| struct stat* statbuf) |
| { |
| while (path[basepos] != 0) { |
| if (path[basepos] == '/') { |
| path[basepos] = 0; |
| if (lstat(path, statbuf) < 0) { |
| LOGI("Making directory: %s\n", path); |
| if (mkdir(path, mode) == 0) { |
| chown(path, uid, gid); |
| } else { |
| LOGW("Unable to make directory %s: %s\n", path, strerror(errno)); |
| } |
| } |
| path[basepos] = '/'; |
| basepos++; |
| } |
| basepos++; |
| } |
| } |
| |
| int movefileordir(char* srcpath, char* dstpath, int dstbasepos, |
| int dstuid, int dstgid, struct stat* statbuf) |
| { |
| DIR *d; |
| struct dirent *de; |
| int res; |
| |
| int srcend = strlen(srcpath); |
| int dstend = strlen(dstpath); |
| |
| if (lstat(srcpath, statbuf) < 0) { |
| LOGW("Unable to stat %s: %s\n", srcpath, strerror(errno)); |
| return 1; |
| } |
| |
| if ((statbuf->st_mode&S_IFDIR) == 0) { |
| mkinnerdirs(dstpath, dstbasepos, S_IRWXU|S_IRWXG|S_IXOTH, |
| dstuid, dstgid, statbuf); |
| LOGI("Renaming %s to %s (uid %d)\n", srcpath, dstpath, dstuid); |
| if (rename(srcpath, dstpath) >= 0) { |
| if (chown(dstpath, dstuid, dstgid) < 0) { |
| LOGE("cannot chown %s: %s\n", dstpath, strerror(errno)); |
| unlink(dstpath); |
| return 1; |
| } |
| } else { |
| LOGW("Unable to rename %s to %s: %s\n", |
| srcpath, dstpath, strerror(errno)); |
| return 1; |
| } |
| return 0; |
| } |
| |
| d = opendir(srcpath); |
| if (d == NULL) { |
| LOGW("Unable to opendir %s: %s\n", srcpath, strerror(errno)); |
| return 1; |
| } |
| |
| res = 0; |
| |
| while ((de = readdir(d))) { |
| const char *name = de->d_name; |
| /* always skip "." and ".." */ |
| if (name[0] == '.') { |
| if (name[1] == 0) continue; |
| if ((name[1] == '.') && (name[2] == 0)) continue; |
| } |
| |
| if ((srcend+strlen(name)) >= (PKG_PATH_MAX-2)) { |
| LOGW("Source path too long; skipping: %s/%s\n", srcpath, name); |
| continue; |
| } |
| |
| if ((dstend+strlen(name)) >= (PKG_PATH_MAX-2)) { |
| LOGW("Destination path too long; skipping: %s/%s\n", dstpath, name); |
| continue; |
| } |
| |
| srcpath[srcend] = dstpath[dstend] = '/'; |
| strcpy(srcpath+srcend+1, name); |
| strcpy(dstpath+dstend+1, name); |
| |
| if (movefileordir(srcpath, dstpath, dstbasepos, dstuid, dstgid, statbuf) != 0) { |
| res = 1; |
| } |
| |
| // Note: we will be leaving empty directories behind in srcpath, |
| // but that is okay, the package manager will be erasing all of the |
| // data associated with .apks that disappear. |
| |
| srcpath[srcend] = dstpath[dstend] = 0; |
| } |
| |
| closedir(d); |
| return res; |
| } |
| |
| int movefiles() |
| { |
| DIR *d; |
| int dfd, subfd; |
| struct dirent *de; |
| struct stat s; |
| char buf[PKG_PATH_MAX+1]; |
| int bufp, bufe, bufi, readlen; |
| |
| char srcpkg[PKG_NAME_MAX]; |
| char dstpkg[PKG_NAME_MAX]; |
| char srcpath[PKG_PATH_MAX]; |
| char dstpath[PKG_PATH_MAX]; |
| int dstuid=-1, dstgid=-1; |
| int hasspace; |
| |
| d = opendir(UPDATE_COMMANDS_DIR_PREFIX); |
| if (d == NULL) { |
| goto done; |
| } |
| dfd = dirfd(d); |
| |
| /* Iterate through all files in the directory, executing the |
| * file movements requested there-in. |
| */ |
| while ((de = readdir(d))) { |
| const char *name = de->d_name; |
| |
| if (de->d_type == DT_DIR) { |
| continue; |
| } else { |
| subfd = openat(dfd, name, O_RDONLY); |
| if (subfd < 0) { |
| LOGW("Unable to open update commands at %s%s\n", |
| UPDATE_COMMANDS_DIR_PREFIX, name); |
| continue; |
| } |
| |
| bufp = 0; |
| bufe = 0; |
| buf[PKG_PATH_MAX] = 0; |
| srcpkg[0] = dstpkg[0] = 0; |
| while (1) { |
| bufi = bufp; |
| while (bufi < bufe && buf[bufi] != '\n') { |
| bufi++; |
| } |
| if (bufi < bufe) { |
| buf[bufi] = 0; |
| LOGV("Processing line: %s\n", buf+bufp); |
| hasspace = 0; |
| while (bufp < bufi && isspace(buf[bufp])) { |
| hasspace = 1; |
| bufp++; |
| } |
| if (buf[bufp] == '#' || bufp == bufi) { |
| // skip comments and empty lines. |
| } else if (hasspace) { |
| if (dstpkg[0] == 0) { |
| LOGW("Path before package line in %s%s: %s\n", |
| UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp); |
| } else if (srcpkg[0] == 0) { |
| // Skip -- source package no longer exists. |
| } else { |
| LOGV("Move file: %s (from %s to %s)\n", buf+bufp, srcpkg, dstpkg); |
| if (!create_move_path(srcpath, PKG_DIR_PREFIX, srcpkg, buf+bufp) && |
| !create_move_path(dstpath, PKG_DIR_PREFIX, dstpkg, buf+bufp)) { |
| movefileordir(srcpath, dstpath, |
| strlen(dstpath)-strlen(buf+bufp), |
| dstuid, dstgid, &s); |
| } |
| } |
| } else { |
| char* div = strchr(buf+bufp, ':'); |
| if (div == NULL) { |
| LOGW("Bad package spec in %s%s; no ':' sep: %s\n", |
| UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp); |
| } else { |
| *div = 0; |
| div++; |
| if (strlen(buf+bufp) < PKG_NAME_MAX) { |
| strcpy(dstpkg, buf+bufp); |
| } else { |
| srcpkg[0] = dstpkg[0] = 0; |
| LOGW("Package name too long in %s%s: %s\n", |
| UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp); |
| } |
| if (strlen(div) < PKG_NAME_MAX) { |
| strcpy(srcpkg, div); |
| } else { |
| srcpkg[0] = dstpkg[0] = 0; |
| LOGW("Package name too long in %s%s: %s\n", |
| UPDATE_COMMANDS_DIR_PREFIX, name, div); |
| } |
| if (srcpkg[0] != 0) { |
| if (!create_pkg_path(srcpath, PKG_DIR_PREFIX, srcpkg, |
| PKG_DIR_POSTFIX)) { |
| if (lstat(srcpath, &s) < 0) { |
| // Package no longer exists -- skip. |
| srcpkg[0] = 0; |
| } |
| } else { |
| srcpkg[0] = 0; |
| LOGW("Can't create path %s in %s%s\n", |
| div, UPDATE_COMMANDS_DIR_PREFIX, name); |
| } |
| if (srcpkg[0] != 0) { |
| if (!create_pkg_path(dstpath, PKG_DIR_PREFIX, dstpkg, |
| PKG_DIR_POSTFIX)) { |
| if (lstat(dstpath, &s) == 0) { |
| dstuid = s.st_uid; |
| dstgid = s.st_gid; |
| } else { |
| // Destination package doesn't |
| // exist... due to original-package, |
| // this is normal, so don't be |
| // noisy about it. |
| srcpkg[0] = 0; |
| } |
| } else { |
| srcpkg[0] = 0; |
| LOGW("Can't create path %s in %s%s\n", |
| div, UPDATE_COMMANDS_DIR_PREFIX, name); |
| } |
| } |
| LOGV("Transfering from %s to %s: uid=%d\n", |
| srcpkg, dstpkg, dstuid); |
| } |
| } |
| } |
| bufp = bufi+1; |
| } else { |
| if (bufp == 0) { |
| if (bufp < bufe) { |
| LOGW("Line too long in %s%s, skipping: %s\n", |
| UPDATE_COMMANDS_DIR_PREFIX, name, buf); |
| } |
| } else if (bufp < bufe) { |
| memcpy(buf, buf+bufp, bufe-bufp); |
| bufe -= bufp; |
| bufp = 0; |
| } |
| readlen = read(subfd, buf+bufe, PKG_PATH_MAX-bufe); |
| if (readlen < 0) { |
| LOGW("Failure reading update commands in %s%s: %s\n", |
| UPDATE_COMMANDS_DIR_PREFIX, name, strerror(errno)); |
| break; |
| } else if (readlen == 0) { |
| break; |
| } |
| bufe += readlen; |
| buf[bufe] = 0; |
| LOGV("Read buf: %s\n", buf); |
| } |
| } |
| close(subfd); |
| } |
| } |
| closedir(d); |
| done: |
| return 0; |
| } |
