1 /* Error-checking wrappers for memstream functions. 2 Copyright (C) 2016-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library 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 GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #include <support/xmemstream.h> 20 21 #include <errno.h> 22 #include <stdlib.h> 23 #include <support/check.h> 24 #include <support/xstdio.h> 25 26 void xopen_memstream(struct xmemstream * stream)27xopen_memstream (struct xmemstream *stream) 28 { 29 int old_errno = errno; 30 *stream = (struct xmemstream) {}; 31 stream->out = open_memstream (&stream->buffer, &stream->length); 32 if (stream->out == NULL) 33 FAIL_EXIT1 ("open_memstream: %m"); 34 errno = old_errno; 35 } 36 37 void xfclose_memstream(struct xmemstream * stream)38xfclose_memstream (struct xmemstream *stream) 39 { 40 xfclose (stream->out); 41 stream->out = NULL; 42 } 43