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  • Committer: alvherre
  • Date: 2005-12-16 21:24:52 UTC
  • Revision ID: svn-v4:db760fc0-0f08-0410-9d63-cc6633f64896:trunk:1
Initial import of the REL8_0_3 sources from the Pgsql CVS repository.

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src/port/kill.c
 
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/*-------------------------------------------------------------------------
 
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 *
 
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 * kill.c
 
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 *        kill()
 
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 *
 
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 * Copyright (c) 1996-2005, PostgreSQL Global Development Group
 
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 *
 
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 *      This is a replacement version of kill for Win32 which sends
 
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 *      signals that the backend can recognize.
 
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 *
 
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 * IDENTIFICATION
 
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 *        $PostgreSQL: pgsql/src/port/kill.c,v 1.6 2004-12-31 22:03:53 pgsql Exp $
 
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 *
 
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 *-------------------------------------------------------------------------
 
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 */
 
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#include "c.h"
 
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#ifdef WIN32
 
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/* signal sending */
 
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int
 
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pgkill(int pid, int sig)
 
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{
 
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        char            pipename[128];
 
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        BYTE            sigData = sig;
 
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        BYTE            sigRet = 0;
 
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        DWORD           bytes;
 
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        /* we allow signal 0 here, but it will be ignored in pg_queue_signal */
 
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        if (sig >= PG_SIGNAL_COUNT || sig < 0)
 
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        {
 
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                errno = EINVAL;
 
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                return -1;
 
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        }
 
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        if (pid <= 0)
 
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        {
 
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                /* No support for process groups */
 
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                errno = EINVAL;
 
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                return -1;
 
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        }
 
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        wsprintf(pipename, "\\\\.\\pipe\\pgsignal_%i", pid);
 
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        if (!CallNamedPipe(pipename, &sigData, 1, &sigRet, 1, &bytes, 1000))
 
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        {
 
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                if (GetLastError() == ERROR_FILE_NOT_FOUND)
 
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                        errno = ESRCH;
 
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                else if (GetLastError() == ERROR_ACCESS_DENIED)
 
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                        errno = EPERM;
 
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                else
 
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                        errno = EINVAL;
 
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                return -1;
 
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        }
 
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        if (bytes != 1 || sigRet != sig)
 
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        {
 
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                errno = ESRCH;
 
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                return -1;
 
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        }
 
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        return 0;
 
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}
 
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#endif