From 2714c5f3c95f90977167c1d21326d907fb76b419 Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Fri, 2 Jun 2017 15:50:36 +0200 Subject: resolv: Tests for various versions of res_init --- support/support_write_file_string.c | 39 +++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 support/support_write_file_string.c (limited to 'support/support_write_file_string.c') diff --git a/support/support_write_file_string.c b/support/support_write_file_string.c new file mode 100644 index 0000000000..48e89597f3 --- /dev/null +++ b/support/support_write_file_string.c @@ -0,0 +1,39 @@ +/* Write a string to a file. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include + +void +support_write_file_string (const char *path, const char *contents) +{ + int fd = xopen (path, O_CREAT | O_TRUNC | O_WRONLY, 0666); + const char *end = contents + strlen (contents); + for (const char *p = contents; p < end; ) + { + ssize_t ret = write (fd, p, end - p); + if (ret < 0) + FAIL_EXIT1 ("cannot write to \"%s\": %m", path); + if (ret == 0) + FAIL_EXIT1 ("zero-length write to \"%s\"", path); + p += ret; + } + xclose (fd); +} -- cgit v1.2.3-70-g09d2