| /* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include <dlfcn.h> |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| #include "libminijail.h" |
| |
| #include "elfparse.h" |
| #include "minijail0_cli.h" |
| #include "util.h" |
| |
| int main(int argc, char *argv[]) |
| { |
| struct minijail *j = minijail_new(); |
| const char *dl_mesg = NULL; |
| const char *preload_path = PRELOADPATH; |
| int exit_immediately = 0; |
| ElfType elftype = ELFERROR; |
| int consumed = parse_args(j, argc, argv, &exit_immediately, &elftype, |
| &preload_path); |
| argc -= consumed; |
| argv += consumed; |
| |
| /* |
| * Make the process group ID of this process equal to its PID. |
| * In the non-interactive case (e.g. when minijail0 is started from |
| * init) this ensures the parent process and the jailed process |
| * can be killed together. |
| * |
| * Don't fail on EPERM, since setpgid(0, 0) can only EPERM when |
| * the process is already a process group leader. |
| */ |
| if (setpgid(0 /* use calling PID */, 0 /* make PGID = PID */)) { |
| if (errno != EPERM) { |
| fprintf(stderr, "setpgid(0, 0) failed\n"); |
| exit(1); |
| } |
| } |
| |
| if (elftype == ELFSTATIC) { |
| /* |
| * Target binary is statically linked so we cannot use |
| * libminijailpreload.so. |
| */ |
| minijail_run_no_preload(j, argv[0], argv); |
| } else if (elftype == ELFDYNAMIC) { |
| /* |
| * Target binary is dynamically linked so we can |
| * inject libminijailpreload.so into it. |
| */ |
| |
| /* Check that we can dlopen() libminijailpreload.so. */ |
| if (!dlopen(preload_path, RTLD_LAZY | RTLD_LOCAL)) { |
| dl_mesg = dlerror(); |
| fprintf(stderr, "dlopen(): %s\n", dl_mesg); |
| return 1; |
| } |
| minijail_set_preload_path(j, preload_path); |
| minijail_run(j, argv[0], argv); |
| } else { |
| fprintf(stderr, |
| "Target program '%s' is not a valid ELF file.\n", |
| argv[0]); |
| return 1; |
| } |
| |
| if (exit_immediately) |
| return 0; |
| |
| int ret = minijail_wait(j); |
| #if defined(__SANITIZE_ADDRESS__) |
| minijail_destroy(j); |
| #endif /* __SANITIZE_ADDRESS__ */ |
| return ret; |
| } |