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117 lines
5.1 KiB
117 lines
5.1 KiB
/***************************************************************************/
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/* */
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/* Project: OpenSLP - OpenSource implementation of Service Location */
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/* Protocol */
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/* */
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/* File: slp_pid.c */
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/* */
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/* Abstract: Common code to obtain process identifier information */
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/* */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Please submit patches to http://www.openslp.org */
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/* */
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/*-------------------------------------------------------------------------*/
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/* */
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/* Copyright (C) 2000 Caldera Systems, Inc */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or without */
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/* modification, are permitted provided that the following conditions are */
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/* met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the */
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/* distribution. */
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/* */
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/* Neither the name of Caldera Systems nor the names of its */
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/* contributors may be used to endorse or promote products derived */
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/* from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
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/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE CALDERA */
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/* SYSTEMS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
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/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
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/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
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/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
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/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/***************************************************************************/
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#include "slp_pid.h"
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#else
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#include <unistd.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/types.h>
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#endif
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/*=========================================================================*/
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uint32_t SLPPidGet()
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/* Description:
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* Get a process 32 bit integer identifier for the current process
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* loopback interface
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*
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* Parameters:
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*
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* Returns:
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* 32 bit integer identifier for the current process
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*=========================================================================*/
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{
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#ifdef _WIN32
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return GetCurrentProcessId();
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#else
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return getpid();
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#endif
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}
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/*=========================================================================*/
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int SLPPidExists(uint32_t pid)
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/* Description:
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* (quickly) determine whether or not the process with the specified
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* identifier exists (is alive)
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*
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* Parameters:
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* pid (IN) 32 bit integer identifier for the process to check for
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*
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* Returns:
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* Boolean value. Zero if process does not exist, non-zero if it does
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*=========================================================================*/
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{
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#ifndef _WIN32
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if(kill(pid,0))
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{
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if(errno == ESRCH)
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{
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/* pid does not exist */
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return 0;
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}
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}
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#else
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HANDLE h;
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if (!(h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, (DWORD)pid)))
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{
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/* pid does not exist - or we have so few rights we shouldn't be running! */
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return 0;
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}
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CloseHandle(h);
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#endif
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return 1;
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}
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