From 025c439e829e0db9ac511cd9c1b8d5fd53475ead Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 15:14:46 +0200 Subject: Adding upstream version 1.9.15p5. Signed-off-by: Daniel Baumann --- lib/util/pwrite.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 lib/util/pwrite.c (limited to 'lib/util/pwrite.c') diff --git a/lib/util/pwrite.c b/lib/util/pwrite.c new file mode 100644 index 0000000..24dba6c --- /dev/null +++ b/lib/util/pwrite.c @@ -0,0 +1,48 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2020 Todd C. Miller + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * This is an open source non-commercial project. Dear PVS-Studio, please check it. + * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com + */ + +#include + +#include +#include + +#include + +#if !defined(HAVE_PWRITE) && !defined(HAVE_PWRITE64) +ssize_t +sudo_pwrite(int fd, const void *buf, size_t nbytes, off_t offset) +{ + ssize_t nwritten; + off_t old_offset; + + old_offset = lseek(fd, (off_t)0, SEEK_CUR); + if (old_offset == -1 || lseek(fd, offset, SEEK_SET) == -1) + return -1; + + nwritten = write(fd, buf, nbytes); + if (lseek(fd, old_offset, SEEK_SET) == -1) + return -1; + + return nwritten; +} +#endif /* HAVE_PWRITE && !HAVE_PWRITE64 */ -- cgit v1.2.3