granicus.if.org Git - postgresql/blob - src/port/kill.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * kill.c
   4  *        kill()
   5  *
   6  * Copyright (c) 1996-2003, PostgreSQL Global Development Group
   7  *
   8  *      This is a replacement version of kill for Win32 which sends
   9  *      signals that the backend can recognize.
  10  *
  11  * IDENTIFICATION
  12  *        $PostgreSQL: pgsql/src/port/kill.c,v 1.1 2004/05/27 13:08:57 momjian Exp $
  13  *
  14  *-------------------------------------------------------------------------
  15  */
  16
  17 #include "postgres.h"
  18
  19 #ifdef WIN32
  20 /* signal sending */
  21 int
  22 pgkill(int pid, int sig)
  23 {
  24         char            pipename[128];
  25         BYTE            sigData = sig;
  26         BYTE            sigRet = 0;
  27         DWORD           bytes;
  28
  29         if (sig >= PG_SIGNAL_COUNT || sig <= 0)
  30         {
  31                 errno = EINVAL;
  32                 return -1;
  33         }
  34         if (pid <= 0)
  35         {
  36                 /* No support for process groups */
  37                 errno = EINVAL;
  38                 return -1;
  39         }
  40         wsprintf(pipename, "\\\\.\\pipe\\pgsignal_%i", pid);
  41         if (!CallNamedPipe(pipename, &sigData, 1, &sigRet, 1, &bytes, 1000))
  42         {
  43                 if (GetLastError() == ERROR_FILE_NOT_FOUND)
  44                         errno = ESRCH;
  45                 else if (GetLastError() == ERROR_ACCESS_DENIED)
  46                         errno = EPERM;
  47                 else
  48                         errno = EINVAL;
  49                 return -1;
  50         }
  51         if (bytes != 1 || sigRet != sig)
  52         {
  53                 errno = ESRCH;
  54                 return -1;
  55         }
  56
  57         return 0;
  58 }
  59 #endif