int make_user_data(const char *pkgname, uid_t uid, userid_t userid) { char pkgdir[PKG_PATH_MAX]; char applibdir[PKG_PATH_MAX]; char libsymlink[PKG_PATH_MAX]; struct stat libStat; // Create the data dir for the package if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, userid)) { return -1; } if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, userid)) { ALOGE("cannot create package lib symlink origin path\n"); return -1; } if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) { ALOGE("cannot create package lib symlink dest path\n"); return -1; } if (mkdir(pkgdir, 0751) < 0) { ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno)); return -errno; } if (chmod(pkgdir, 0751) < 0) { ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno)); unlink(pkgdir); return -errno; } if (lstat(libsymlink, &libStat) < 0) { if (errno != ENOENT) { ALOGE("couldn't stat lib dir for non-primary: %s\n", strerror(errno)); unlink(pkgdir); return -1; } } else { if (S_ISDIR(libStat.st_mode)) { if (delete_dir_contents(libsymlink, 1, 0) < 0) { ALOGE("couldn't delete lib directory during install for non-primary: %s", libsymlink); unlink(pkgdir); return -1; } } else if (S_ISLNK(libStat.st_mode)) { if (unlink(libsymlink) < 0) { ALOGE("couldn't unlink lib directory during install for non-primary: %s", libsymlink); unlink(pkgdir); return -1; } } } if (symlink(applibdir, libsymlink) < 0) { ALOGE("couldn't symlink directory for non-primary '%s' -> '%s': %s\n", libsymlink, applibdir, strerror(errno)); unlink(pkgdir); return -1; } if (selinux_android_setfilecon(pkgdir, pkgname, uid) < 0) { ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno)); unlink(libsymlink); unlink(pkgdir); return -errno; } if (chown(pkgdir, uid, uid) < 0) { ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno)); unlink(libsymlink); unlink(pkgdir); return -errno; } return 0; }
int install(const char *pkgname, uid_t uid, gid_t gid) { char pkgdir[PKG_PATH_MAX]; char libsymlink[PKG_PATH_MAX]; char applibdir[PKG_PATH_MAX]; struct stat libStat; if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) { ALOGE("invalid uid/gid: %d %d\n", uid, gid); return -1; } if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, 0)) { ALOGE("cannot create package path\n"); return -1; } if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, 0)) { ALOGE("cannot create package lib symlink origin path\n"); return -1; } if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) { ALOGE("cannot create package lib symlink dest path\n"); return -1; } if (mkdir(pkgdir, 0751) < 0) { ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno)); return -1; } if (chmod(pkgdir, 0751) < 0) { ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno)); unlink(pkgdir); return -1; } if (lstat(libsymlink, &libStat) < 0) { if (errno != ENOENT) { ALOGE("couldn't stat lib dir: %s\n", strerror(errno)); return -1; } } else { if (S_ISDIR(libStat.st_mode)) { if (delete_dir_contents(libsymlink, 1, 0) < 0) { ALOGE("couldn't delete lib directory during install for: %s", libsymlink); return -1; } } else if (S_ISLNK(libStat.st_mode)) { if (unlink(libsymlink) < 0) { ALOGE("couldn't unlink lib directory during install for: %s", libsymlink); return -1; } } } if (symlink(applibdir, libsymlink) < 0) { ALOGE("couldn't symlink directory '%s' -> '%s': %s\n", libsymlink, applibdir, strerror(errno)); unlink(pkgdir); return -1; } #ifdef HAVE_SELINUX if (selinux_android_setfilecon(pkgdir, pkgname, uid) < 0) { ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno)); unlink(libsymlink); unlink(pkgdir); return -1; } #endif if (chown(pkgdir, uid, gid) < 0) { ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno)); unlink(libsymlink); unlink(pkgdir); return -1; } return 0; }