gdb/contrib/expect-read1.c - gdb

Functions defined

Macros defined

Source code

  1. /* Copyright (C) 2013-2015 Free Software Foundation, Inc.

  3.    This file is part of GDB.

  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.

  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.

  15.    You should have received a copy of the GNU General Public License
  16.    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

  18. /* RTLD_NEXT requires _GNU_SOURCE.  */
  19. ‌#define _GNU_SOURCE 1
  20. #include <dlfcn.h>
  21. #include <unistd.h>
  22. #include <fcntl.h>
  23. #include <stdlib.h>

  25. ssize_t
  26. ‌read (int fd, void *buf, size_t count)
  27. {
  28.   static ssize_t (*read2) (int fd, void *buf, size_t count) = NULL;

  30.   if (read2 == NULL)
  31.     {
  32.       unsetenv ("LD_PRELOAD");
  33.       read2 = dlsym (RTLD_NEXT, "read");
  34.     }

  36.   if (count > 1 && isatty (fd) == 1)
  37.     count = 1;

  39.   return read2 (fd, buf, count);
  40. }