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diff --git a/src/VBox/Runtime/r3/posix/process-posix.cpp b/src/VBox/Runtime/r3/posix/process-posix.cpp
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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;
+}
+