1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1999 Global Technology Associates, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <err.h>
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#include <string.h>
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#include <unistd.h>
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#include "kgzip.h"
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/*
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* Close a file.
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*/
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void
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xclose(const struct iodesc *id)
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{
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if (close(id->fd))
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err(1, "%s", id->fname);
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}
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/*
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* Copy bytes from one file to another.
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*/
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void
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xcopy(const struct iodesc * idi, const struct iodesc * ido,
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size_t nbyte, off_t offset)
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{
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char buf[8192];
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size_t n;
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while (nbyte) {
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if ((n = sizeof(buf)) > nbyte)
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n = nbyte;
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if (xread(idi, buf, n, offset) != n)
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errx(1, "%s: Short read", idi->fname);
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xwrite(ido, buf, n);
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nbyte -= n;
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offset = -1;
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}
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}
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/*
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* Write binary zeroes to a file.
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*/
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void
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xzero(const struct iodesc * id, size_t nbyte)
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{
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char buf[8192];
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size_t n;
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memset(buf, 0, sizeof(buf));
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while (nbyte) {
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if ((n = sizeof(buf)) > nbyte)
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n = nbyte;
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xwrite(id, buf, n);
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nbyte -= n;
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}
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}
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/*
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* Read from a file.
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*/
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size_t
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xread(const struct iodesc * id, void *buf, size_t nbyte, off_t offset)
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{
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ssize_t n;
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if (offset != -1 && lseek(id->fd, offset, SEEK_SET) != offset)
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err(1, "%s", id->fname);
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if ((n = read(id->fd, buf, nbyte)) == -1)
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err(1, "%s", id->fname);
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return (size_t)n;
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}
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/*
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* Write to a file.
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*/
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void
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xwrite(const struct iodesc * id, const void *buf, size_t nbyte)
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{
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ssize_t n;
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if ((n = write(id->fd, buf, nbyte)) == -1)
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err(1, "%s", id->fname);
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if ((size_t)n != nbyte)
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errx(1, "%s: Short write", id->fname);
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}
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/*
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* Reposition within a file.
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*/
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void
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xseek(const struct iodesc *id, off_t offset)
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{
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if (lseek(id->fd, offset, SEEK_SET) != offset)
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err(1, "%s", id->fname);
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}
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