gnu/dist/gdb6/gdb/posix-hdep.c

   1 /* Host support routines for MinGW, for GDB, the GNU debugger.
   2
   3    Copyright (C) 2006
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21    Boston, MA 02110-1301, USA.  */
  22
  23 #include "defs.h"
  24
  25 #include "gdb_string.h"
  26
  27 #include "gdb_select.h"
  28
  29 /* The strerror() function can return NULL for errno values that are
  30    out of range.  Provide a "safe" version that always returns a
  31    printable string. */
  32
  33 char *
  34 safe_strerror (int errnum)
  35 {
  36   char *msg;
  37
  38   msg = strerror (errnum);
  39   if (msg == NULL)
  40     {
  41       static char buf[32];
  42       xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
  43       msg = buf;
  44     }
  45   return (msg);
  46 }
  47
  48 /* Wrapper for select.  Nothing special needed on POSIX platforms.  */
  49
  50 int
  51 gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
  52             struct timeval *timeout)
  53 {
  54   return select (n, readfds, writefds, exceptfds, timeout);
  55 }