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lib/util/pwrite.c
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Todd C. Miller
Remove Open Source PVS-Studio comments
28 сен 2025, 18:40
28 сен 2025, 18:40
2a33699
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/* * SPDX-License-Identifier: ISC * * Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws> * * 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. */ #include <config.h> #include <errno.h> #include <unistd.h> #include <sudo_compat.h> #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 */