gdb/posix-hdep.c

   1 /* Host support routines for MinGW, for GDB, the GNU debugger.
   2
   3    Copyright (C) 2006, 2007 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #include "defs.h"
  23
  24 #include "gdb_string.h"
  25
  26 #include "gdb_select.h"
  27
  28 /* The strerror() function can return NULL for errno values that are
  29    out of range.  Provide a "safe" version that always returns a
  30    printable string. */
  31
  32 char *
  33 safe_strerror (int errnum)
  34 {
  35   char *msg;
  36
  37   msg = strerror (errnum);
  38   if (msg == NULL)
  39     {
  40       static char buf[32];
  41       xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
  42       msg = buf;
  43     }
  44   return (msg);
  45 }
  46
  47 /* Wrapper for select.  Nothing special needed on POSIX platforms.  */
  48
  49 int
  50 gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
  51             struct timeval *timeout)
  52 {
  53   return select (n, readfds, writefds, exceptfds, timeout);
  54 }