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