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.
127 lines
3.9 KiB
C
127 lines
3.9 KiB
C
/* $NetBSD: cd9660_archimedes.c,v 1.1 2009/01/10 22:06:29 bjh21 Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1998, 2009 Ben Harris
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* cd9660_archimedes.c - support for RISC OS "ARCHIMEDES" extension
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*
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* RISC OS CDFS looks for a special block at the end of the System Use
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* Field for each file. If present, this contains the RISC OS load
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* and exec address (used to hold the file timestamp and type), the
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* file attributes, and a flag indicating whether the first character
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* of the filename should be replaced with '!' (since many special
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* RISC OS filenames do).
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <assert.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <util.h>
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#include "makefs.h"
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#include "cd9660.h"
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#include "cd9660_archimedes.h"
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/*
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* Convert a Unix time_t (non-leap seconds since 1970-01-01) to a RISC
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* OS time (non-leap(?) centiseconds since 1900-01-01(?)).
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*/
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static u_int64_t
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riscos_date(time_t unixtime)
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{
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u_int64_t base;
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base = 31536000ULL * 70 + 86400 * 17;
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return (((u_int64_t)unixtime) + base)*100;
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}
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/*
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* Add "ARCHIMEDES" metadata to a node if that seems appropriate.
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*
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* We touch regular files with names matching /,[0-9a-f]{3}$/ and
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* directories matching /^!/.
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*/
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static void
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archimedes_convert_node(cd9660node *node)
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{
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struct ISO_ARCHIMEDES *arc;
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size_t len;
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int type = -1;
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uint64_t stamp;
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if (node->su_tail_data != NULL)
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/* Something else already has the tail. */
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return;
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len = strlen(node->node->name);
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if (len < 1) return;
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if (len >= 4 && node->node->name[len-4] == ',')
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/* XXX should support ,xxx and ,lxa */
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type = strtoul(node->node->name + len - 3, NULL, 16);
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if (type == -1 && node->node->name[0] != '!')
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return;
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if (type == -1) type = 0;
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assert(sizeof(*arc) == 32);
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arc = ecalloc(1, sizeof(*arc));
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stamp = riscos_date(node->node->inode->st.st_mtime);
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memcpy(arc->magic, "ARCHIMEDES", 10);
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cd9660_731(0xfff00000 | (type << 8) | (stamp >> 32), arc->loadaddr);
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cd9660_731(stamp & 0x00ffffffffULL, arc->execaddr);
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arc->ro_attr = RO_ACCESS_UR | RO_ACCESS_OR;
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arc->cdfs_attr = node->node->name[0] == '!' ? CDFS_PLING : 0;
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node->su_tail_data = (void *)arc;
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node->su_tail_size = sizeof(*arc);
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}
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/*
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* Add "ARCHIMEDES" metadata to an entire tree recursively.
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*/
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void
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archimedes_convert_tree(cd9660node *node)
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{
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cd9660node *cn;
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assert(node != NULL);
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archimedes_convert_node(node);
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/* Recurse on children. */
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TAILQ_FOREACH(cn, &node->cn_children, cn_next_child)
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archimedes_convert_tree(cn);
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}
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