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/* $Id: process-posix.cpp $ */
/** @file
* IPRT - Process, POSIX.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_PROCESS
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <signal.h>
#include <pwd.h>
#include <iprt/process.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/env.h>
#include <iprt/err.h>
#include <iprt/file.h>
#include <iprt/pipe.h>
#include <iprt/socket.h>
#include <iprt/string.h>
#include <iprt/mem.h>
#include "internal/process.h"
RTR3DECL(int) RTProcWait(RTPROCESS Process, unsigned fFlags, PRTPROCSTATUS pProcStatus)
{
int rc;
do rc = RTProcWaitNoResume(Process, fFlags, pProcStatus);
while (rc == VERR_INTERRUPTED);
return rc;
}
RTR3DECL(int) RTProcWaitNoResume(RTPROCESS Process, unsigned fFlags, PRTPROCSTATUS pProcStatus)
{
/*
* Validate input.
*/
if (Process <= 0)
{
AssertMsgFailed(("Invalid Process=%d\n", Process));
return VERR_INVALID_PARAMETER;
}
if (fFlags & ~(RTPROCWAIT_FLAGS_NOBLOCK | RTPROCWAIT_FLAGS_BLOCK))
{
AssertMsgFailed(("Invalid flags %#x\n", fFlags));
return VERR_INVALID_PARAMETER;
}
/*
* Perform the wait.
*/
int iStatus = 0;
int rc = waitpid(Process, &iStatus, fFlags & RTPROCWAIT_FLAGS_NOBLOCK ? WNOHANG : 0);
if (rc > 0)
{
/*
* Fill in the status structure.
*/
if (pProcStatus)
{
if (WIFEXITED(iStatus))
{
pProcStatus->enmReason = RTPROCEXITREASON_NORMAL;
pProcStatus->iStatus = WEXITSTATUS(iStatus);
}
else if (WIFSIGNALED(iStatus))
{
pProcStatus->enmReason = RTPROCEXITREASON_SIGNAL;
pProcStatus->iStatus = WTERMSIG(iStatus);
}
else
{
Assert(!WIFSTOPPED(iStatus));
pProcStatus->enmReason = RTPROCEXITREASON_ABEND;
pProcStatus->iStatus = iStatus;
}
}
return VINF_SUCCESS;
}
/*
* Child running?
*/
if (!rc)
{
Assert(fFlags & RTPROCWAIT_FLAGS_NOBLOCK);
return VERR_PROCESS_RUNNING;
}
/*
* Figure out which error to return.
*/
int iErr = errno;
if (iErr == ECHILD)
return VERR_PROCESS_NOT_FOUND;
return RTErrConvertFromErrno(iErr);
}
RTR3DECL(int) RTProcTerminate(RTPROCESS Process)
{
if (Process == NIL_RTPROCESS)
return VINF_SUCCESS;
if (!kill(Process, SIGKILL))
return VINF_SUCCESS;
return RTErrConvertFromErrno(errno);
}
RTR3DECL(uint64_t) RTProcGetAffinityMask(void)
{
/// @todo
return 1;
}
RTR3DECL(int) RTProcQueryParent(RTPROCESS hProcess, PRTPROCESS phParent)
{
if (hProcess == RTProcSelf())
{
*phParent = getppid();
return VINF_SUCCESS;
}
return VERR_NOT_SUPPORTED;
}
RTR3DECL(int) RTProcQueryUsername(RTPROCESS hProcess, char *pszUser, size_t cbUser, size_t *pcbUser)
{
AssertReturn( (pszUser && cbUser > 0)
|| (!pszUser && !cbUser), VERR_INVALID_PARAMETER);
AssertReturn(pcbUser || pszUser, VERR_INVALID_PARAMETER);
int rc;
if ( hProcess == NIL_RTPROCESS
|| hProcess == RTProcSelf())
{
/*
* Figure a good buffer estimate.
*/
int32_t cbPwdMax = sysconf(_SC_GETPW_R_SIZE_MAX);
if (cbPwdMax <= _1K)
cbPwdMax = _1K;
else
AssertStmt(cbPwdMax <= 32*_1M, cbPwdMax = 32*_1M);
char *pchBuf = (char *)RTMemTmpAllocZ(cbPwdMax);
if (pchBuf)
{
/*
* Get the password file entry.
*/
struct passwd Pwd;
struct passwd *pPwd = NULL;
rc = getpwuid_r(geteuid(), &Pwd, pchBuf, cbPwdMax, &pPwd);
if (!rc)
{
/*
* Convert the name to UTF-8, assuming that we're getting it in the local codeset.
*/
/** @todo This isn't exactly optimal... the current codeset/page conversion
* stuff never was. Should optimize that for UTF-8 and ASCII one day.
* And also optimize for avoiding heap. */
char *pszTmp = NULL;
rc = RTStrCurrentCPToUtf8(&pszTmp, pPwd->pw_name);
if (RT_SUCCESS(rc))
{
size_t cbTmp = strlen(pszTmp) + 1;
if (pcbUser)
*pcbUser = cbTmp;
if (cbTmp <= cbUser)
{
memcpy(pszUser, pszTmp, cbTmp);
rc = VINF_SUCCESS;
}
else
rc = VERR_BUFFER_OVERFLOW;
RTStrFree(pszTmp);
}
}
else
rc = RTErrConvertFromErrno(rc);
RTMemFree(pchBuf);
}
else
rc = VERR_NO_TMP_MEMORY;
}
else
rc = VERR_NOT_SUPPORTED;
return rc;
}
RTR3DECL(int) RTProcQueryUsernameA(RTPROCESS hProcess, char **ppszUser)
{
AssertPtrReturn(ppszUser, VERR_INVALID_POINTER);
int rc;
if ( hProcess == NIL_RTPROCESS
|| hProcess == RTProcSelf())
{
/*
* Figure a good buffer estimate.
*/
int32_t cbPwdMax = sysconf(_SC_GETPW_R_SIZE_MAX);
if (cbPwdMax <= _1K)
cbPwdMax = _1K;
else
AssertStmt(cbPwdMax <= 32*_1M, cbPwdMax = 32*_1M);
char *pchBuf = (char *)RTMemTmpAllocZ(cbPwdMax);
if (pchBuf)
{
/*
* Get the password file entry.
*/
struct passwd Pwd;
struct passwd *pPwd = NULL;
rc = getpwuid_r(geteuid(), &Pwd, pchBuf, cbPwdMax, &pPwd);
if (!rc)
{
/*
* Convert the name to UTF-8, assuming that we're getting it in the local codeset.
*/
rc = RTStrCurrentCPToUtf8(ppszUser, pPwd->pw_name);
}
else
rc = RTErrConvertFromErrno(rc);
RTMemFree(pchBuf);
}
else
rc = VERR_NO_TMP_MEMORY;
}
else
rc = VERR_NOT_SUPPORTED;
return rc;
}
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