fileread_ustarfs.c revision 1.1.18.2
1 1.1.18.2 yamt /* $NetBSD: fileread_ustarfs.c,v 1.1.18.2 2006/06/21 14:51:21 yamt Exp $ */ 2 1.1.18.2 yamt 3 1.1.18.2 yamt /*- 4 1.1.18.2 yamt * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 1.1.18.2 yamt * All rights reserved. 6 1.1.18.2 yamt * 7 1.1.18.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.1.18.2 yamt * by UCHIYAMA Yasushi. 9 1.1.18.2 yamt * 10 1.1.18.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.1.18.2 yamt * modification, are permitted provided that the following conditions 12 1.1.18.2 yamt * are met: 13 1.1.18.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.1.18.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.1.18.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.18.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.1.18.2 yamt * documentation and/or other materials provided with the distribution. 18 1.1.18.2 yamt * 3. All advertising materials mentioning features or use of this software 19 1.1.18.2 yamt * must display the following acknowledgement: 20 1.1.18.2 yamt * This product includes software developed by the NetBSD 21 1.1.18.2 yamt * Foundation, Inc. and its contributors. 22 1.1.18.2 yamt * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.18.2 yamt * contributors may be used to endorse or promote products derived 24 1.1.18.2 yamt * from this software without specific prior written permission. 25 1.1.18.2 yamt * 26 1.1.18.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.18.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.18.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.18.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.18.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.18.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.18.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.18.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.18.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.18.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.18.2 yamt * POSSIBILITY OF SUCH DAMAGE. 37 1.1.18.2 yamt */ 38 1.1.18.2 yamt 39 1.1.18.2 yamt #ifdef _STANDALONE 40 1.1.18.2 yamt #include <lib/libsa/stand.h> 41 1.1.18.2 yamt #include <lib/libkern/libkern.h> 42 1.1.18.2 yamt #endif 43 1.1.18.2 yamt 44 1.1.18.2 yamt #include <sys/types.h> 45 1.1.18.2 yamt #include <sys/param.h> 46 1.1.18.2 yamt #include "bootxx.h" 47 1.1.18.2 yamt 48 1.1.18.2 yamt #include <machine/sector.h> 49 1.1.18.2 yamt #include <machine/sbd.h> 50 1.1.18.2 yamt 51 1.1.18.2 yamt int ustar_size(const char *); 52 1.1.18.2 yamt 53 1.1.18.2 yamt int 54 1.1.18.2 yamt fileread(const char *fname, size_t *size) 55 1.1.18.2 yamt { 56 1.1.18.2 yamt uint8_t *p = (void *)SDBOOT_PDINFOADDR; 57 1.1.18.2 yamt 58 1.1.18.2 yamt if (dk_read(16, 1, p) != 0) 59 1.1.18.2 yamt return BERR_TARHDR; 60 1.1.18.2 yamt 61 1.1.18.2 yamt if (((*(uint32_t *)(p + 256)) & 0xffffff) != 0x757374) 62 1.1.18.2 yamt return BERR_TARMAGIC; 63 1.1.18.2 yamt 64 1.1.18.2 yamt *size = ustar_size(p + 124); 65 1.1.18.2 yamt if (dk_read(17, ROUND_SECTOR(*size) >> DEV_BSHIFT, 66 1.1.18.2 yamt (void *)SDBOOT_SCRATCHADDR) != 0) 67 1.1.18.2 yamt return BERR_RDFILE; 68 1.1.18.2 yamt 69 1.1.18.2 yamt return 0; 70 1.1.18.2 yamt } 71 1.1.18.2 yamt 72 1.1.18.2 yamt int 73 1.1.18.2 yamt ustar_size(const char *p) 74 1.1.18.2 yamt { 75 1.1.18.2 yamt int i, j, k; 76 1.1.18.2 yamt 77 1.1.18.2 yamt for (i = 0, j = 0, k = 1, p += 10; i < 11; i++, p--, k *= 8) 78 1.1.18.2 yamt j += (*p - '0') * k; 79 1.1.18.2 yamt 80 1.1.18.2 yamt return j; 81 1.1.18.2 yamt } 82
Indexes created Sat Oct 25 16:10:12 GMT 2025