lib/full-read.h

   1 /* An interface to read() that reads all it is asked to read.
   2
   3    Copyright (C) 2002, 2009-2025 Free Software Foundation, Inc.
   4
   5    This file is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    This file 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 Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #include <stddef.h>
  19
  20 #include "idx.h"
  21
  22 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26
  27 /* Read COUNT bytes at BUF to descriptor FD, retrying if interrupted
  28    or if partial reads occur.  Return the number of bytes successfully
  29    read, setting errno if that is less than COUNT.  errno = 0 means EOF.  */
  30 extern idx_t full_read (int fd, void *buf, idx_t count);
  31
  32
  33 #ifdef __cplusplus
  34 }
  35 #endif