| 1 | /* $Id: RTProcDaemonize-generic.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTProcDaemonize, generic implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010-2022 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #define LOG_GROUP RTLOGGROUP_PROCESS
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| 42 | #include <iprt/process.h>
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| 43 | #include "internal/iprt.h"
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| 44 |
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| 45 | #include <iprt/assert.h>
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| 46 | #include <iprt/env.h>
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| 47 | #include <iprt/errcore.h>
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| 48 | #include <iprt/file.h>
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| 49 | #include <iprt/mem.h>
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| 50 | #include <iprt/string.h>
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| 51 | #include "internal/process.h"
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| 52 |
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| 53 |
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| 54 | RTR3DECL(int) RTProcDaemonize(const char * const *papszArgs, const char *pszDaemonizedOpt)
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| 55 | {
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| 56 | /*
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| 57 | * Get the executable name.
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| 58 | * If this asserts, it's probably because rtR3Init hasn't been called.
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| 59 | */
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| 60 | char szExecPath[RTPATH_MAX];
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| 61 | AssertReturn(RTProcGetExecutablePath(szExecPath, sizeof(szExecPath)) == szExecPath, VERR_WRONG_ORDER);
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| 62 |
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| 63 | /*
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| 64 | * Create a copy of the argument list with the daemonized option appended.
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| 65 | */
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| 66 | unsigned cArgs = 0;
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| 67 | while (papszArgs[cArgs])
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| 68 | cArgs++;
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| 69 |
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| 70 | char const **papszNewArgs = (char const **)RTMemAlloc(sizeof(const char *) * (cArgs + 2));
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| 71 | if (!papszNewArgs)
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| 72 | return VERR_NO_MEMORY;
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| 73 | for (unsigned i = 0; i < cArgs; i++)
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| 74 | papszNewArgs[i] = papszArgs[i];
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| 75 | papszNewArgs[cArgs] = pszDaemonizedOpt;
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| 76 | papszNewArgs[cArgs + 1] = NULL;
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| 77 |
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| 78 | /*
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| 79 | * Open the bitbucket handles and create the detached process.
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| 80 | */
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| 81 | RTHANDLE hStdIn;
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| 82 | int rc = RTFileOpenBitBucket(&hStdIn.u.hFile, RTFILE_O_READ);
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| 83 | if (RT_SUCCESS(rc))
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| 84 | {
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| 85 | hStdIn.enmType = RTHANDLETYPE_FILE;
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| 86 |
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| 87 | RTHANDLE hStdOutAndErr;
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| 88 | rc = RTFileOpenBitBucket(&hStdOutAndErr.u.hFile, RTFILE_O_WRITE);
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| 89 | if (RT_SUCCESS(rc))
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| 90 | {
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| 91 | hStdOutAndErr.enmType = RTHANDLETYPE_FILE;
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| 92 |
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| 93 | rc = RTProcCreateEx(szExecPath, papszNewArgs, RTENV_DEFAULT,
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| 94 | RTPROC_FLAGS_DETACHED | RTPROC_FLAGS_SAME_CONTRACT,
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| 95 | &hStdIn, &hStdOutAndErr, &hStdOutAndErr,
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| 96 | NULL /*pszAsUser*/, NULL /*pszPassword*/, NULL /*pExtraData*/, NULL /*phProcess*/);
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| 97 |
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| 98 | RTFileClose(hStdOutAndErr.u.hFile);
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| 99 | }
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| 100 |
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| 101 | RTFileClose(hStdIn.u.hFile);
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| 102 | }
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| 103 | RTMemFree(papszNewArgs);
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| 104 | return rc;
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| 105 | }
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| 106 |
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