| 1 | /** $Id$ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * VBoxService - Guest Additions Service Skeleton.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2007 innotek GmbH
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | */
|
|---|
| 17 |
|
|---|
| 18 | /*******************************************************************************
|
|---|
| 19 | * Header Files *
|
|---|
| 20 | *******************************************************************************/
|
|---|
| 21 | #include <sys/types.h>
|
|---|
| 22 | #include <sys/stat.h>
|
|---|
| 23 | #include <stdio.h>
|
|---|
| 24 | #include <stdlib.h>
|
|---|
| 25 | #include <unistd.h>
|
|---|
| 26 | #include <signal.h>
|
|---|
| 27 | #include <fcntl.h>
|
|---|
| 28 | #ifdef USE_LIBDAEMON
|
|---|
| 29 | #include <libdaemon/dfork.h>
|
|---|
| 30 | #include <libdaemon/dsignal.h>
|
|---|
| 31 | #endif
|
|---|
| 32 |
|
|---|
| 33 | #include <VBox/VBoxGuest.h>
|
|---|
| 34 | #include "VBoxServiceInternal.h"
|
|---|
| 35 |
|
|---|
| 36 | /**
|
|---|
| 37 | * Solaris daemon() call (currently does not use libdaemon).
|
|---|
| 38 | *
|
|---|
| 39 | * @returns 0 on success
|
|---|
| 40 | */
|
|---|
| 41 | int daemon(int nochdir, int noclose)
|
|---|
| 42 | {
|
|---|
| 43 | #ifdef USE_LIBDAEMON
|
|---|
| 44 | pid_t pid = daemon_fork();
|
|---|
| 45 | if (pid < 0)
|
|---|
| 46 | {
|
|---|
| 47 | daemon_retval_done();
|
|---|
| 48 | return -1;
|
|---|
| 49 | }
|
|---|
| 50 |
|
|---|
| 51 | if (pid)
|
|---|
| 52 | exit(0);
|
|---|
| 53 |
|
|---|
| 54 | daemon_close_all(-1);
|
|---|
| 55 | return 0;
|
|---|
| 56 | #else
|
|---|
| 57 | if (getppid() == 1) /* We already belong to init process */
|
|---|
| 58 | return -1;
|
|---|
| 59 |
|
|---|
| 60 | pid_t pid = fork();
|
|---|
| 61 | if (pid < 0) /* The fork() failed. Bad. */
|
|---|
| 62 | return -1;
|
|---|
| 63 |
|
|---|
| 64 | if (pid > 0) /* Quit parent process */
|
|---|
| 65 | exit(0);
|
|---|
| 66 |
|
|---|
| 67 | /*
|
|---|
| 68 | * The orphaned child becomes a daemon after attaching to init. We need to get
|
|---|
| 69 | * rid of signals, file descriptors & other stuff we inherited from the parent.
|
|---|
| 70 | */
|
|---|
| 71 | pid_t newpgid = setsid();
|
|---|
| 72 | if (newpgid < 0) /* Failed to create new sesion */
|
|---|
| 73 | return -1;
|
|---|
| 74 |
|
|---|
| 75 | /* BSD daemon style. */
|
|---|
| 76 | if (!noclose)
|
|---|
| 77 | {
|
|---|
| 78 | /* Open stdin(0), stdout(1) and stderr(2) to /dev/null */
|
|---|
| 79 | int fd = open("/dev/null", O_RDWR);
|
|---|
| 80 | dup2(fd, STDIN_FILENO);
|
|---|
| 81 | dup2(fd, STDOUT_FILENO);
|
|---|
| 82 | dup2(fd, STDERR_FILENO);
|
|---|
| 83 | if (fd > 2)
|
|---|
| 84 | close(fd);
|
|---|
| 85 | }
|
|---|
| 86 |
|
|---|
| 87 | /* Switch our current directory to root */
|
|---|
| 88 | if (!nochdir)
|
|---|
| 89 | chdir("/"); /* @todo Check if switching to '/' is the convention for Solaris daemons. */
|
|---|
| 90 |
|
|---|
| 91 | /* Set file permission to something secure, as we need to run as root on Solaris */
|
|---|
| 92 | umask(027);
|
|---|
| 93 | return 0;
|
|---|
| 94 | #endif
|
|---|
| 95 | }
|
|---|
| 96 |
|
|---|
