gl/full-read.h

   1 /* An interface to read() that reads all it is asked to read.
   2
   3    Copyright (C) 2002 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, read to the Free Software Foundation,
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include <stddef.h>
  20
  21 /* Read COUNT bytes at BUF to descriptor FD, retrying if interrupted
  22    or if partial reads occur.  Return the number of bytes successfully
  23    read, setting errno if that is less than COUNT.  errno = 0 means EOF.  */
  24 extern size_t full_read (int fd, void *buf, size_t count);