plugins/valgrind/vgio.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  *  Authors: Jeffrey Stedfast <fejj@ximian.com>
   4  *
   5  *  Copyright 2003 Ximian, Inc. (www.ximian.com)
   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, Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <sys/types.h>
  29 #include <unistd.h>
  30 #include <fcntl.h>
  31 #include <errno.h>
  32
  33 #include "vgio.h"
  34
  35 ssize_t
  36 vg_read (int fd, char *buf, size_t n)
  37 {
  38         ssize_t nread;
  39
  40         do {
  41                 nread = read (fd, buf, n);
  42         } while (nread == -1 && errno == EINTR);
  43
  44         return nread;
  45 }
  46
  47
  48 ssize_t
  49 vg_write (int fd, const char *buf, size_t n)
  50 {
  51         size_t nwritten = 0;
  52         ssize_t w;
  53
  54         do {
  55                 do {
  56                         w = write (fd, buf + nwritten, n - nwritten);
  57                 } while (w == -1 && errno == EINTR);
  58
  59                 if (w == -1)
  60                         return -1;
  61
  62                 nwritten += w;
  63         } while (nwritten < n);
  64
  65         return nwritten;
  66 }