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-rw-r--r--sal/osl/unx/process.cxx1194
1 files changed, 1194 insertions, 0 deletions
diff --git a/sal/osl/unx/process.cxx b/sal/osl/unx/process.cxx
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+++ b/sal/osl/unx/process.cxx
@@ -0,0 +1,1194 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+#include <rtl/ustring.hxx>
+
+#include <cassert>
+
+/*
+ * ToDo:
+ * - cleanup of process status things
+ * - cleanup of process spawning
+ * - cleanup of resource transfer
+ */
+
+#if defined(__sun)
+ // The procfs may only be used without LFS in 32bits.
+# ifdef _FILE_OFFSET_BITS
+# undef _FILE_OFFSET_BITS
+# endif
+#endif
+
+#if defined(FREEBSD) || defined(NETBSD) || defined(DRAGONFLY)
+#include <machine/param.h>
+#endif
+
+#include "system.hxx"
+#include "unixerrnostring.hxx"
+#if defined(__sun)
+# include <sys/procfs.h>
+#endif
+#include <osl/diagnose.h>
+#include <osl/mutex.h>
+#include <osl/process.h>
+#include <osl/conditn.h>
+#include <osl/thread.h>
+#include <osl/file.h>
+#include <osl/file.hxx>
+#include <osl/signal.h>
+#include <rtl/alloc.h>
+#include <sal/log.hxx>
+
+#include <grp.h>
+
+#include "createfilehandlefromfd.hxx"
+#include "file_url.hxx"
+#include "readwrite_helper.hxx"
+#include "sockimpl.hxx"
+#include "secimpl.hxx"
+
+#define MAX_ARGS 255
+#define MAX_ENVS 255
+
+namespace
+{
+
+struct oslProcessImpl {
+ pid_t m_pid;
+ oslCondition m_terminated;
+ int m_status;
+ oslProcessImpl* m_pnext;
+};
+
+struct ProcessData
+{
+ const char* m_pszArgs[MAX_ARGS + 1];
+ const char* m_pszDir;
+ char* m_pszEnv[MAX_ENVS + 1];
+ uid_t m_uid;
+ gid_t m_gid;
+ char* m_name;
+ oslCondition m_started;
+ oslProcessImpl* m_pProcImpl;
+ oslFileHandle *m_pInputWrite;
+ oslFileHandle *m_pOutputRead;
+ oslFileHandle *m_pErrorRead;
+};
+
+oslProcessImpl* ChildList;
+oslMutex ChildListMutex;
+
+} //Anonymous namespace
+
+static oslProcessError osl_psz_executeProcess(char *pszImageName,
+ char *pszArguments[],
+ oslProcessOption Options,
+ oslSecurity Security,
+ char *pszDirectory,
+ char *pszEnvironments[],
+ oslProcess *pProcess,
+ oslFileHandle *pInputWrite,
+ oslFileHandle *pOutputRead,
+ oslFileHandle *pErrorRead );
+
+extern "C" {
+
+static void ChildStatusProc(void *pData)
+{
+ osl_setThreadName("osl_executeProcess");
+
+ pid_t pid = -1;
+ int status = 0;
+ int channel[2] = { -1, -1 };
+ ProcessData data;
+ ProcessData *pdata;
+ int stdOutput[2] = { -1, -1 }, stdInput[2] = { -1, -1 }, stdError[2] = { -1, -1 };
+
+ pdata = static_cast<ProcessData *>(pData);
+
+ /* make a copy of our data, because forking will only copy
+ our local stack of the thread, so the process data will not be accessible
+ in our child process */
+ memcpy(&data, pData, sizeof(data));
+
+#ifdef NO_CHILD_PROCESSES
+#define fork() (errno = EINVAL, -1)
+#endif
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == -1)
+ {
+ status = errno;
+ SAL_WARN("sal.osl", "executeProcess socketpair() errno " << status);
+ }
+
+ (void) fcntl(channel[0], F_SETFD, FD_CLOEXEC);
+ (void) fcntl(channel[1], F_SETFD, FD_CLOEXEC);
+
+ /* Create redirected IO pipes */
+ if ( status == 0 && data.m_pInputWrite && pipe( stdInput ) == -1 )
+ {
+ status = errno;
+ assert(status != 0);
+ SAL_WARN("sal.osl", "executeProcess pipe(stdInput) errno " << status);
+ }
+
+ if ( status == 0 && data.m_pOutputRead && pipe( stdOutput ) == -1 )
+ {
+ status = errno;
+ assert(status != 0);
+ SAL_WARN("sal.osl", "executeProcess pipe(stdOutput) errno " << status);
+ }
+
+ if ( status == 0 && data.m_pErrorRead && pipe( stdError ) == -1 )
+ {
+ status = errno;
+ assert(status != 0);
+ SAL_WARN("sal.osl", "executeProcess pipe(stdError) errno " << status);
+ }
+
+ if ( (status == 0) && ((pid = fork()) == 0) )
+ {
+ /* Child */
+ int chstatus = 0;
+ int errno_copy;
+
+ if (channel[0] != -1) close(channel[0]);
+
+ if ((data.m_uid != uid_t(-1)) && ((data.m_uid != getuid()) || (data.m_gid != getgid())))
+ {
+ OSL_ASSERT(geteuid() == 0); /* must be root */
+
+ if (! INIT_GROUPS(data.m_name, data.m_gid) || (setuid(data.m_uid) != 0))
+ {
+ // ignore; can't do much about it here after fork
+ }
+
+ unsetenv("HOME");
+ }
+
+ if (data.m_pszDir)
+ chstatus = chdir(data.m_pszDir);
+
+ if (chstatus == 0 && ((data.m_uid == uid_t(-1)) || ((data.m_uid == getuid()) && (data.m_gid == getgid()))))
+ {
+ int i;
+ for (i = 0; data.m_pszEnv[i] != nullptr; i++)
+ {
+ if (strchr(data.m_pszEnv[i], '=') == nullptr)
+ {
+ unsetenv(data.m_pszEnv[i]); /*TODO: check error return*/
+ }
+ else
+ {
+ putenv(data.m_pszEnv[i]); /*TODO: check error return*/
+ }
+ }
+
+ /* Connect std IO to pipe ends */
+
+ /* Write end of stdInput not used in child process */
+ if (stdInput[1] != -1) close( stdInput[1] );
+
+ /* Read end of stdOutput not used in child process */
+ if (stdOutput[0] != -1) close( stdOutput[0] );
+
+ /* Read end of stdError not used in child process */
+ if (stdError[0] != -1) close( stdError[0] );
+
+ /* Redirect pipe ends to std IO */
+
+ if ( stdInput[0] != STDIN_FILENO )
+ {
+ dup2( stdInput[0], STDIN_FILENO );
+ if (stdInput[0] != -1) close( stdInput[0] );
+ }
+
+ if ( stdOutput[1] != STDOUT_FILENO )
+ {
+ dup2( stdOutput[1], STDOUT_FILENO );
+ if (stdOutput[1] != -1) close( stdOutput[1] );
+ }
+
+ if ( stdError[1] != STDERR_FILENO )
+ {
+ dup2( stdError[1], STDERR_FILENO );
+ if (stdError[1] != -1) close( stdError[1] );
+ }
+
+ // No need to check the return value of execv. If we return from
+ // it, an error has occurred.
+ execv(data.m_pszArgs[0], const_cast<char **>(data.m_pszArgs));
+ }
+
+ /* if we reach here, something went wrong */
+ errno_copy = errno;
+ if ( !safeWrite(channel[1], &errno_copy, sizeof(errno_copy)) )
+ {
+ // ignore; can't do much about it here after fork
+ }
+
+ if ( channel[1] != -1 )
+ close(channel[1]);
+
+ _exit(255);
+ }
+ else
+ { /* Parent */
+ int i = -1;
+ if (channel[1] != -1) close(channel[1]);
+
+ /* Close unused pipe ends */
+ if (stdInput[0] != -1) close( stdInput[0] );
+ if (stdOutput[1] != -1) close( stdOutput[1] );
+ if (stdError[1] != -1) close( stdError[1] );
+
+ if (pid > 0)
+ {
+ while ((i = read(channel[0], &status, sizeof(status))) < 0)
+ {
+ if (errno != EINTR)
+ break;
+ }
+ }
+
+ if (channel[0] != -1) close(channel[0]);
+
+ if ((pid > 0) && (i == 0))
+ {
+ pid_t child_pid;
+ osl_acquireMutex(ChildListMutex);
+
+ pdata->m_pProcImpl->m_pid = pid;
+ pdata->m_pProcImpl->m_pnext = ChildList;
+ ChildList = pdata->m_pProcImpl;
+
+ /* Store used pipe ends in data structure */
+
+ if ( pdata->m_pInputWrite )
+ *(pdata->m_pInputWrite) = osl::detail::createFileHandleFromFD( stdInput[1] );
+
+ if ( pdata->m_pOutputRead )
+ *(pdata->m_pOutputRead) = osl::detail::createFileHandleFromFD( stdOutput[0] );
+
+ if ( pdata->m_pErrorRead )
+ *(pdata->m_pErrorRead) = osl::detail::createFileHandleFromFD( stdError[0] );
+
+ osl_releaseMutex(ChildListMutex);
+
+ osl_setCondition(pdata->m_started);
+
+ do
+ {
+ child_pid = waitpid(pid, &status, 0);
+ } while ( 0 > child_pid && EINTR == errno );
+
+ if ( child_pid < 0)
+ {
+ SAL_WARN("sal.osl", "Failed to wait for child process: " << UnixErrnoString(errno));
+
+ /*
+ We got another error than EINTR. Anyway we have to wake up the
+ waiting thread under any circumstances */
+
+ child_pid = pid;
+ }
+
+ if ( child_pid > 0 )
+ {
+ oslProcessImpl* pChild;
+
+ osl_acquireMutex(ChildListMutex);
+
+ pChild = ChildList;
+
+ /* check if it is one of our child processes */
+ while (pChild != nullptr)
+ {
+ if (pChild->m_pid == child_pid)
+ {
+ if (WIFEXITED(status))
+ pChild->m_status = WEXITSTATUS(status);
+ else if (WIFSIGNALED(status))
+ pChild->m_status = 128 + WTERMSIG(status);
+ else
+ pChild->m_status = -1;
+
+ osl_setCondition(pChild->m_terminated);
+ }
+
+ pChild = pChild->m_pnext;
+ }
+
+ osl_releaseMutex(ChildListMutex);
+ }
+ }
+ else
+ {
+ SAL_WARN("sal.osl", "ChildStatusProc : starting '" << data.m_pszArgs[0] << "' failed");
+ SAL_WARN("sal.osl", "Failed to launch child process, child reports " << UnixErrnoString(status));
+
+ /* Close pipe ends */
+ if ( pdata->m_pInputWrite )
+ *pdata->m_pInputWrite = nullptr;
+
+ if ( pdata->m_pOutputRead )
+ *pdata->m_pOutputRead = nullptr;
+
+ if ( pdata->m_pErrorRead )
+ *pdata->m_pErrorRead = nullptr;
+
+ if (stdInput[1] != -1) close( stdInput[1] );
+ if (stdOutput[0] != -1) close( stdOutput[0] );
+ if (stdError[0] != -1) close( stdError[0] );
+
+ /* if pid > 0 then a process was created, even if it later failed
+ e.g. bash searching for a command to execute, and we still
+ need to clean it up to avoid "defunct" processes */
+ if (pid > 0)
+ {
+ pid_t child_pid;
+ do
+ {
+ child_pid = waitpid(pid, &status, 0);
+ } while ( 0 > child_pid && EINTR == errno );
+ }
+
+ /* notify (and unblock) parent thread */
+ osl_setCondition(pdata->m_started);
+ }
+ }
+}
+
+}
+
+oslProcessError SAL_CALL osl_executeProcess_WithRedirectedIO(
+ rtl_uString *ustrImageName,
+ rtl_uString *ustrArguments[],
+ sal_uInt32 nArguments,
+ oslProcessOption Options,
+ oslSecurity Security,
+ rtl_uString *ustrWorkDir,
+ rtl_uString *ustrEnvironment[],
+ sal_uInt32 nEnvironmentVars,
+ oslProcess *pProcess,
+ oslFileHandle *pInputWrite,
+ oslFileHandle *pOutputRead,
+ oslFileHandle *pErrorRead
+ )
+{
+ OUString image;
+ if (ustrImageName == nullptr)
+ {
+ if (nArguments == 0)
+ {
+ return osl_Process_E_InvalidError;
+ }
+ image = OUString::unacquired(ustrArguments);
+ }
+ else
+ {
+ osl::FileBase::RC e = osl::FileBase::getSystemPathFromFileURL(
+ OUString::unacquired(&ustrImageName), image);
+ if (e != osl::FileBase::E_None)
+ {
+ SAL_INFO(
+ "sal.osl",
+ "getSystemPathFromFileURL("
+ << OUString::unacquired(&ustrImageName)
+ << ") failed with " << e);
+ return osl_Process_E_Unknown;
+ }
+ }
+
+ if ((Options & osl_Process_SEARCHPATH) != 0)
+ {
+ OUString path;
+ if (osl::detail::find_in_PATH(image, path))
+ {
+ image = path;
+ }
+ }
+
+ oslProcessError Error;
+ char* pszWorkDir=nullptr;
+ char** pArguments=nullptr;
+ char** pEnvironment=nullptr;
+ unsigned int idx;
+
+ char szImagePath[PATH_MAX] = "";
+ if (!image.isEmpty()
+ && (UnicodeToText(
+ szImagePath, SAL_N_ELEMENTS(szImagePath), image.getStr(),
+ image.getLength())
+ == 0))
+ {
+ int e = errno;
+ SAL_INFO("sal.osl", "UnicodeToText(" << image << ") failed with " << e);
+ return osl_Process_E_Unknown;
+ }
+
+ char szWorkDir[PATH_MAX] = "";
+ if ( ustrWorkDir != nullptr && ustrWorkDir->length )
+ {
+ oslFileError e = FileURLToPath( szWorkDir, PATH_MAX, ustrWorkDir );
+ if (e != osl_File_E_None)
+ {
+ SAL_INFO(
+ "sal.osl",
+ "FileURLToPath(" << OUString::unacquired(&ustrWorkDir)
+ << ") failed with " << e);
+ return osl_Process_E_Unknown;
+ }
+ pszWorkDir = szWorkDir;
+ }
+
+ if ( pArguments == nullptr && nArguments > 0 )
+ {
+ pArguments = static_cast<char**>(malloc( ( nArguments + 2 ) * sizeof(char*) ));
+ }
+
+ for ( idx = 0 ; idx < nArguments ; ++idx )
+ {
+ rtl_String* strArg =nullptr;
+
+ rtl_uString2String( &strArg,
+ rtl_uString_getStr(ustrArguments[idx]),
+ rtl_uString_getLength(ustrArguments[idx]),
+ osl_getThreadTextEncoding(),
+ OUSTRING_TO_OSTRING_CVTFLAGS );
+
+ pArguments[idx]=strdup(rtl_string_getStr(strArg));
+ rtl_string_release(strArg);
+ pArguments[idx+1]=nullptr;
+ }
+
+ for ( idx = 0 ; idx < nEnvironmentVars ; ++idx )
+ {
+ rtl_String* strEnv=nullptr;
+
+ if ( pEnvironment == nullptr )
+ {
+ pEnvironment = static_cast<char**>(malloc( ( nEnvironmentVars + 2 ) * sizeof(char*) ));
+ }
+
+ rtl_uString2String( &strEnv,
+ rtl_uString_getStr(ustrEnvironment[idx]),
+ rtl_uString_getLength(ustrEnvironment[idx]),
+ osl_getThreadTextEncoding(),
+ OUSTRING_TO_OSTRING_CVTFLAGS );
+
+ pEnvironment[idx]=strdup(rtl_string_getStr(strEnv));
+ rtl_string_release(strEnv);
+ pEnvironment[idx+1]=nullptr;
+ }
+
+ Error = osl_psz_executeProcess(szImagePath,
+ pArguments,
+ Options,
+ Security,
+ pszWorkDir,
+ pEnvironment,
+ pProcess,
+ pInputWrite,
+ pOutputRead,
+ pErrorRead
+ );
+
+ if ( pArguments != nullptr )
+ {
+ for ( idx = 0 ; idx < nArguments ; ++idx )
+ {
+ if ( pArguments[idx] != nullptr )
+ {
+ free(pArguments[idx]);
+ }
+ }
+ free(pArguments);
+ }
+
+ if ( pEnvironment != nullptr )
+ {
+ for ( idx = 0 ; idx < nEnvironmentVars ; ++idx )
+ {
+ if ( pEnvironment[idx] != nullptr )
+ {
+ free(pEnvironment[idx]);
+ }
+ }
+ free(pEnvironment);
+ }
+
+ return Error;
+}
+
+oslProcessError SAL_CALL osl_executeProcess(
+ rtl_uString *ustrImageName,
+ rtl_uString *ustrArguments[],
+ sal_uInt32 nArguments,
+ oslProcessOption Options,
+ oslSecurity Security,
+ rtl_uString *ustrWorkDir,
+ rtl_uString *ustrEnvironment[],
+ sal_uInt32 nEnvironmentVars,
+ oslProcess *pProcess
+ )
+{
+ return osl_executeProcess_WithRedirectedIO(
+ ustrImageName,
+ ustrArguments,
+ nArguments,
+ Options,
+ Security,
+ ustrWorkDir,
+ ustrEnvironment,
+ nEnvironmentVars,
+ pProcess,
+ nullptr,
+ nullptr,
+ nullptr
+ );
+}
+
+oslProcessError osl_psz_executeProcess(char *pszImageName,
+ char *pszArguments[],
+ oslProcessOption Options,
+ oslSecurity Security,
+ char *pszDirectory,
+ char *pszEnvironments[],
+ oslProcess *pProcess,
+ oslFileHandle *pInputWrite,
+ oslFileHandle *pOutputRead,
+ oslFileHandle *pErrorRead
+ )
+{
+ int i;
+ ProcessData Data;
+ oslThread hThread;
+
+ memset(&Data,0,sizeof(ProcessData));
+ Data.m_pInputWrite = pInputWrite;
+ Data.m_pOutputRead = pOutputRead;
+ Data.m_pErrorRead = pErrorRead;
+
+ OSL_ASSERT(pszImageName != nullptr);
+
+ if ( pszImageName == nullptr )
+ {
+ return osl_Process_E_NotFound;
+ }
+
+ Data.m_pszArgs[0] = strdup(pszImageName);
+ Data.m_pszArgs[1] = nullptr;
+
+ if ( pszArguments != nullptr )
+ {
+ for (i = 0; ((i + 2) < MAX_ARGS) && (pszArguments[i] != nullptr); i++)
+ Data.m_pszArgs[i+1] = strdup(pszArguments[i]);
+ Data.m_pszArgs[i+2] = nullptr;
+ }
+
+ Data.m_pszDir = (pszDirectory != nullptr) ? strdup(pszDirectory) : nullptr;
+
+ if (pszEnvironments != nullptr)
+ {
+ for (i = 0; ((i + 1) < MAX_ENVS) && (pszEnvironments[i] != nullptr); i++)
+ Data.m_pszEnv[i] = strdup(pszEnvironments[i]);
+ Data.m_pszEnv[i+1] = nullptr;
+ }
+ else
+ Data.m_pszEnv[0] = nullptr;
+
+ if (Security != nullptr)
+ {
+ Data.m_uid = static_cast<oslSecurityImpl*>(Security)->m_pPasswd.pw_uid;
+ Data.m_gid = static_cast<oslSecurityImpl*>(Security)->m_pPasswd.pw_gid;
+ Data.m_name = static_cast<oslSecurityImpl*>(Security)->m_pPasswd.pw_name;
+ }
+ else
+ Data.m_uid = uid_t(-1);
+
+ Data.m_pProcImpl = static_cast<oslProcessImpl*>(malloc(sizeof(oslProcessImpl)));
+ Data.m_pProcImpl->m_pid = 0;
+ Data.m_pProcImpl->m_terminated = osl_createCondition();
+ Data.m_pProcImpl->m_pnext = nullptr;
+
+ if (ChildListMutex == nullptr)
+ ChildListMutex = osl_createMutex();
+
+ Data.m_started = osl_createCondition();
+
+ hThread = osl_createThread(ChildStatusProc, &Data);
+
+ if (hThread != nullptr)
+ {
+ osl_waitCondition(Data.m_started, nullptr);
+ }
+ osl_destroyCondition(Data.m_started);
+
+ for (i = 0; Data.m_pszArgs[i] != nullptr; i++)
+ free(const_cast<char *>(Data.m_pszArgs[i]));
+
+ for (i = 0; Data.m_pszEnv[i] != nullptr; i++)
+ free(Data.m_pszEnv[i]);
+
+ if ( Data.m_pszDir != nullptr )
+ {
+ free(const_cast<char *>(Data.m_pszDir));
+ }
+
+ osl_destroyThread(hThread);
+
+ if (Data.m_pProcImpl->m_pid != 0)
+ {
+ assert(hThread != nullptr);
+
+ *pProcess = Data.m_pProcImpl;
+
+ if (Options & osl_Process_WAIT)
+ osl_joinProcess(*pProcess);
+
+ return osl_Process_E_None;
+ }
+
+ osl_destroyCondition(Data.m_pProcImpl->m_terminated);
+ free(Data.m_pProcImpl);
+
+ return osl_Process_E_Unknown;
+}
+
+oslProcessError SAL_CALL osl_terminateProcess(oslProcess Process)
+{
+ if (Process == nullptr)
+ return osl_Process_E_Unknown;
+
+ if (kill(static_cast<oslProcessImpl*>(Process)->m_pid, SIGKILL) != 0)
+ {
+ switch (errno)
+ {
+ case EPERM:
+ return osl_Process_E_NoPermission;
+
+ case ESRCH:
+ return osl_Process_E_NotFound;
+
+ default:
+ return osl_Process_E_Unknown;
+ }
+ }
+
+ return osl_Process_E_None;
+}
+
+oslProcess SAL_CALL osl_getProcess(oslProcessIdentifier Ident)
+{
+ oslProcessImpl *pProcImpl;
+
+ if (kill(Ident, 0) != -1)
+ {
+ oslProcessImpl* pChild;
+
+ if (ChildListMutex == nullptr)
+ ChildListMutex = osl_createMutex();
+
+ osl_acquireMutex(ChildListMutex);
+
+ pChild = ChildList;
+
+ /* check if it is one of our child processes */
+ while (pChild != nullptr)
+ {
+ if (Ident == static_cast<sal_uInt32>(pChild->m_pid))
+ break;
+
+ pChild = pChild->m_pnext;
+ }
+
+ pProcImpl = static_cast<oslProcessImpl*>(malloc(sizeof(oslProcessImpl)));
+ pProcImpl->m_pid = Ident;
+ pProcImpl->m_terminated = osl_createCondition();
+
+ if (pChild != nullptr)
+ {
+ /* process is a child so insert into list */
+ pProcImpl->m_pnext = pChild->m_pnext;
+ pChild->m_pnext = pProcImpl;
+
+ pProcImpl->m_status = pChild->m_status;
+
+ if (osl_checkCondition(pChild->m_terminated))
+ osl_setCondition(pProcImpl->m_terminated);
+ }
+ else
+ pProcImpl->m_pnext = nullptr;
+
+ osl_releaseMutex(ChildListMutex);
+ }
+ else
+ pProcImpl = nullptr;
+
+ return pProcImpl;
+}
+
+void SAL_CALL osl_freeProcessHandle(oslProcess Process)
+{
+ if (Process == nullptr)
+ return;
+
+ oslProcessImpl *pChild, *pPrev = nullptr;
+
+ OSL_ASSERT(ChildListMutex != nullptr);
+
+ if ( ChildListMutex == nullptr )
+ {
+ return;
+ }
+
+ osl_acquireMutex(ChildListMutex);
+
+ pChild = ChildList;
+
+ /* remove process from child list */
+ while (pChild != nullptr)
+ {
+ if (pChild == static_cast<oslProcessImpl*>(Process))
+ {
+ if (pPrev != nullptr)
+ pPrev->m_pnext = pChild->m_pnext;
+ else
+ ChildList = pChild->m_pnext;
+
+ break;
+ }
+
+ pPrev = pChild;
+ pChild = pChild->m_pnext;
+ }
+
+ osl_releaseMutex(ChildListMutex);
+
+ osl_destroyCondition(static_cast<oslProcessImpl*>(Process)->m_terminated);
+
+ free(Process);
+}
+
+#if defined(LINUX)
+namespace {
+
+struct osl_procStat
+{
+ /* from 'stat' */
+ pid_t pid; /* pid */
+ char command[16]; /* 'argv[0]' */ /* mfe: it all right char comm[16] in kernel! */
+ char state; /* state (running, stopped, ...) */
+ pid_t ppid; /* parent pid */
+ pid_t pgrp; /* parent group */
+ int session; /* session ID */
+ int tty; /* no of tty */
+ pid_t tpgid; /* group of process owning the tty */
+ unsigned long flags; /* flags dunno */
+ unsigned long minflt; /* minor page faults */
+ unsigned long cminflt; /* minor page faults with children */
+ unsigned long majflt; /* major page faults */
+ unsigned long cmajflt; /* major page faults with children */
+ unsigned long utime; /* no of jiffies in user mode */
+ unsigned long stime; /* no of jiffies in kernel mode */
+ unsigned long cutime; /* no of jiffies in user mode with children */
+ unsigned long cstime; /* no of jiffies in kernel mode with children */
+ unsigned long priority; /* nice value + 15 (kernel scheduling prio)*/
+ long nice; /* nice value */
+ long timeout; /* no of jiffies of next process timeout */
+ long itrealvalue; /* no jiffies before next SIGALRM */
+ unsigned long starttime; /* process started this no of jiffies after boot */
+ unsigned long vsize; /* virtual memory size (in bytes) */
+ long rss; /* resident set size (in pages) */
+ unsigned long rss_rlim; /* rss limit (in bytes) */
+ unsigned long startcode; /* address above program text can run */
+ unsigned long endcode; /* address below program text can run */
+ unsigned long startstack; /* address of start of stack */
+ unsigned long kstkesp; /* current value of 'esp' (stack pointer) */
+ unsigned long kstkeip; /* current value of 'eip' (instruction pointer) */
+ /* mfe: Linux > 2.1.7x have more signals (88) */
+ char signal[24]; /* pending signals */
+ char blocked[24]; /* blocked signals */
+ char sigignore[24]; /* ignored signals */
+ char sigcatch[24]; /* caught signals */
+ unsigned long wchan; /* 'channel' the process is waiting in */
+ unsigned long nswap; /* ? */
+ unsigned long cnswap; /* ? */
+
+ /* from 'status' */
+ int ruid; /* real uid */
+ int euid; /* effective uid */
+ int suid; /* saved uid */
+ int fuid; /* file access uid */
+ int rgid; /* real gid */
+ int egid; /* effective gid */
+ int sgid; /* saved gid */
+ int fgid; /* file access gid */
+ unsigned long vm_size; /* like vsize but on kb */
+ unsigned long vm_lock; /* locked pages in kb */
+ unsigned long vm_rss; /* like rss but in kb */
+ unsigned long vm_data; /* data size */
+ unsigned long vm_stack; /* stack size */
+ unsigned long vm_exe; /* executable size */
+ unsigned long vm_lib; /* library size */
+};
+
+}
+
+static bool osl_getProcStat(pid_t pid, struct osl_procStat* procstat)
+{
+ int fd = 0;
+ bool bRet = false;
+ char name[PATH_MAX + 1];
+ snprintf(name, sizeof(name), "/proc/%u/stat", pid);
+
+ if ((fd = open(name,O_RDONLY)) >=0 )
+ {
+ char* tmp=nullptr;
+ char prstatbuf[512];
+ memset(prstatbuf,0,512);
+ bRet = safeRead(fd, prstatbuf, 511);
+
+ close(fd);
+
+ if (!bRet)
+ return false;
+
+ tmp = strrchr(prstatbuf, ')');
+ if(tmp)
+ {
+ *tmp = '\0';
+
+ memset(procstat->command, 0, sizeof(procstat->command));
+
+ sscanf(prstatbuf, "%d (%15c", &procstat->pid, procstat->command);
+ sscanf(tmp + 2,
+ "%c"
+ "%i %i %i %i %i"
+ "%lu %lu %lu %lu %lu"
+ "%lu %lu %lu %lu"
+ "%lu %li %li %li"
+ "%lu %lu %li %lu"
+ "%lu %lu %lu %lu %lu"
+ "%23s %23s %23s %23s"
+ "%lu %lu %lu",
+ &procstat->state,
+ &procstat->ppid, &procstat->pgrp, &procstat->session, &procstat->tty, &procstat->tpgid,
+ &procstat->flags, &procstat->minflt, &procstat->cminflt, &procstat->majflt, &procstat->cmajflt,
+ &procstat->utime, &procstat->stime, &procstat->cutime, &procstat->cstime,
+ &procstat->priority, &procstat->nice, &procstat->timeout, &procstat->itrealvalue,
+ &procstat->starttime, &procstat->vsize, &procstat->rss, &procstat->rss_rlim,
+ &procstat->startcode, &procstat->endcode, &procstat->startstack, &procstat->kstkesp, &procstat->kstkeip,
+ procstat->signal, procstat->blocked, procstat->sigignore, procstat->sigcatch,
+ &procstat->wchan, &procstat->nswap, &procstat->cnswap
+ );
+ }
+ else
+ {
+ bRet = false;
+ }
+ }
+ return bRet;
+}
+
+static bool osl_getProcStatus(pid_t pid, struct osl_procStat* procstat)
+{
+ int fd = 0;
+ char name[PATH_MAX + 1];
+ bool bRet = false;
+
+ snprintf(name, sizeof(name), "/proc/%u/status", pid);
+
+ if ((fd = open(name,O_RDONLY)) >=0 )
+ {
+ char* tmp=nullptr;
+ char prstatusbuf[512];
+ memset(prstatusbuf,0,512);
+ bRet = safeRead(fd, prstatusbuf, 511);
+
+ close(fd);
+
+ if (!bRet)
+ return false;
+
+ tmp = strstr(prstatusbuf,"Uid:");
+ if(tmp)
+ {
+ sscanf(tmp,"Uid:\t%d\t%d\t%d\t%d",
+ &procstat->ruid, &procstat->euid, &procstat->suid, &procstat->fuid
+ );
+ }
+
+ tmp = strstr(prstatusbuf,"Gid:");
+ if(tmp)
+ {
+ sscanf(tmp,"Gid:\t%d\t%d\t%d\t%d",
+ &procstat->rgid, &procstat->egid, &procstat->sgid, &procstat->fgid
+ );
+ }
+
+ tmp = strstr(prstatusbuf,"VmSize:");
+ if(tmp)
+ {
+ sscanf(tmp,
+ "VmSize: %lu kB\n"
+ "VmLck: %lu kB\n"
+ "VmRSS: %lu kB\n"
+ "VmData: %lu kB\n"
+ "VmStk: %lu kB\n"
+ "VmExe: %lu kB\n"
+ "VmLib: %lu kB\n",
+ &procstat->vm_size, &procstat->vm_lock, &procstat->vm_rss, &procstat->vm_data,
+ &procstat->vm_stack, &procstat->vm_exe, &procstat->vm_lib
+ );
+ }
+
+ tmp = strstr(prstatusbuf,"SigPnd:");
+ if(tmp)
+ {
+ sscanf(tmp, "SigPnd: %23s SigBlk: %23s SigIgn: %23s %*s %23s",
+ procstat->signal, procstat->blocked, procstat->sigignore, procstat->sigcatch
+ );
+ }
+ }
+ return bRet;
+}
+
+#endif
+
+oslProcessError SAL_CALL osl_getProcessInfo(oslProcess Process, oslProcessData Fields, oslProcessInfo* pInfo)
+{
+ pid_t pid;
+
+ if (Process == nullptr)
+ pid = getpid();
+ else
+ pid = static_cast<oslProcessImpl*>(Process)->m_pid;
+
+ if (! pInfo || (pInfo->Size != sizeof(oslProcessInfo)))
+ return osl_Process_E_Unknown;
+
+ pInfo->Fields = 0;
+
+ if (Fields & osl_Process_IDENTIFIER)
+ {
+ pInfo->Ident = pid;
+ pInfo->Fields |= osl_Process_IDENTIFIER;
+ }
+
+ if (Fields & osl_Process_EXITCODE)
+ {
+ if ((Process != nullptr) &&
+ osl_checkCondition(static_cast<oslProcessImpl*>(Process)->m_terminated))
+ {
+ pInfo->Code = static_cast<oslProcessImpl*>(Process)->m_status;
+ pInfo->Fields |= osl_Process_EXITCODE;
+ }
+ }
+
+ if (Fields & (osl_Process_HEAPUSAGE | osl_Process_CPUTIMES))
+ {
+
+#if defined(__sun)
+
+ int fd;
+ char name[PATH_MAX + 1];
+
+ snprintf(name, sizeof(name), "/proc/%ld", (long)pid);
+
+ if ((fd = open(name, O_RDONLY)) >= 0)
+ {
+ prstatus_t prstatus;
+
+ if (ioctl(fd, PIOCSTATUS, &prstatus) >= 0)
+ {
+ if (Fields & osl_Process_CPUTIMES)
+ {
+ pInfo->UserTime.Seconds = prstatus.pr_utime.tv_sec;
+ pInfo->UserTime.Nanosec = prstatus.pr_utime.tv_nsec;
+ pInfo->SystemTime.Seconds = prstatus.pr_stime.tv_sec;
+ pInfo->SystemTime.Nanosec = prstatus.pr_stime.tv_nsec;
+
+ pInfo->Fields |= osl_Process_CPUTIMES;
+ }
+
+ if (Fields & osl_Process_HEAPUSAGE)
+ {
+ pInfo->HeapUsage = prstatus.pr_brksize;
+
+ pInfo->Fields |= osl_Process_HEAPUSAGE;
+ }
+
+ close(fd);
+
+ return (pInfo->Fields == Fields) ? osl_Process_E_None : osl_Process_E_Unknown;
+ }
+ else
+ close(fd);
+ }
+
+#elif defined(LINUX)
+
+ if ( (Fields & osl_Process_CPUTIMES) || (Fields & osl_Process_HEAPUSAGE) )
+ {
+ struct osl_procStat procstat;
+ memset(&procstat,0,sizeof(procstat));
+
+ if ( (Fields & osl_Process_CPUTIMES) && osl_getProcStat(pid, &procstat) )
+ {
+ /*
+ * mfe:
+ * We calculate only time of the process proper.
+ * Threads are processes, we do not consider their time here!
+ * (For this, cutime and cstime should be used, it seems not
+ * to work in 2.0.36)
+ */
+
+ long clktck;
+ unsigned long hz;
+ unsigned long userseconds;
+ unsigned long systemseconds;
+
+ clktck = sysconf(_SC_CLK_TCK);
+ if (clktck <= 0) {
+ return osl_Process_E_Unknown;
+ }
+ hz = static_cast<unsigned long>(clktck);
+
+ userseconds = procstat.utime/hz;
+ systemseconds = procstat.stime/hz;
+
+ pInfo->UserTime.Seconds = userseconds;
+ pInfo->UserTime.Nanosec = procstat.utime - (userseconds * hz);
+ pInfo->SystemTime.Seconds = systemseconds;
+ pInfo->SystemTime.Nanosec = procstat.stime - (systemseconds * hz);
+
+ pInfo->Fields |= osl_Process_CPUTIMES;
+ }
+
+ if ( (Fields & osl_Process_HEAPUSAGE) && osl_getProcStatus(pid, &procstat) )
+ {
+ /*
+ * mfe:
+ * vm_data (found in status) shows the size of the data segment
+ * it a rough approximation of the core heap size
+ */
+ pInfo->HeapUsage = procstat.vm_data*1024;
+
+ pInfo->Fields |= osl_Process_HEAPUSAGE;
+ }
+ }
+
+ return (pInfo->Fields == Fields) ? osl_Process_E_None : osl_Process_E_Unknown;
+#endif
+
+ }
+
+ return (pInfo->Fields == Fields) ? osl_Process_E_None : osl_Process_E_Unknown;
+}
+
+/** Helper function for osl_joinProcessWithTimeout
+ */
+
+static bool is_timeout(const struct timeval* tend)
+{
+ struct timeval tcurrent;
+ gettimeofday(&tcurrent, nullptr);
+ return (tcurrent.tv_sec >= tend->tv_sec);
+}
+
+/* kill(pid, 0) is useful for checking if a
+ process is still alive, but remember that
+ kill even returns 0 if the process is already
+ a zombie. */
+
+static bool is_process_dead(pid_t pid)
+{
+ return ((kill(pid, 0) == -1) && (ESRCH == errno));
+}
+
+oslProcessError SAL_CALL osl_joinProcessWithTimeout(oslProcess Process, const TimeValue* pTimeout)
+{
+ oslProcessImpl* pChild = ChildList;
+ oslProcessError osl_error = osl_Process_E_None;
+
+ OSL_PRECOND(Process, "osl_joinProcess: Invalid parameter");
+ OSL_ASSERT(ChildListMutex);
+
+ if (Process == nullptr || ChildListMutex == nullptr)
+ return osl_Process_E_Unknown;
+
+ osl_acquireMutex(ChildListMutex);
+
+ /* check if process is a child of ours */
+ while (pChild != nullptr)
+ {
+ if (pChild == static_cast<oslProcessImpl*>(Process))
+ break;
+
+ pChild = pChild->m_pnext;
+ }
+
+ osl_releaseMutex(ChildListMutex);
+
+ if (pChild != nullptr)
+ {
+ oslConditionResult cond_res = osl_waitCondition(pChild->m_terminated, pTimeout);
+
+ if (cond_res == osl_cond_result_timeout)
+ osl_error = osl_Process_E_TimedOut;
+ else if (cond_res != osl_cond_result_ok)
+ osl_error = osl_Process_E_Unknown;
+ }
+ else /* alien process; StatusThread will not be able
+ to set the condition terminated */
+ {
+ pid_t pid = static_cast<oslProcessImpl*>(Process)->m_pid;
+
+ if (pTimeout)
+ {
+ bool timeout = false;
+ struct timeval tend;
+
+ gettimeofday(&tend, nullptr);
+
+ tend.tv_sec += pTimeout->Seconds;
+
+ while (!is_process_dead(pid) && !(timeout = is_timeout(&tend)))
+ sleep(1);
+
+ if (timeout)
+ osl_error = osl_Process_E_TimedOut;
+ }
+ else /* infinite */
+ {
+ while (!is_process_dead(pid))
+ sleep(1);
+ }
+ }
+ return osl_error;
+}
+
+oslProcessError SAL_CALL osl_joinProcess(oslProcess Process)
+{
+ return osl_joinProcessWithTimeout(Process, nullptr);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */