scsi_subr.c revision 1.9
1 /* $NetBSD: scsi_subr.c,v 1.9 2003/09/08 09:05:08 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * SCSI support subroutines. 42 * 43 * XXX THESE SHOULD BE IN A LIBRARY! 44 */ 45 #include <sys/cdefs.h> 46 47 #ifndef lint 48 __RCSID("$NetBSD: scsi_subr.c,v 1.9 2003/09/08 09:05:08 agc Exp $"); 49 #endif 50 51 52 #include <sys/param.h> 53 #include <sys/ioctl.h> 54 #include <sys/scsiio.h> 55 #include <err.h> 56 #include <errno.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <unistd.h> 61 62 #include <dev/scsipi/scsipi_all.h> 63 64 #include "extern.h" 65 66 #define STRVIS_ISWHITE(x) ((x) == ' ' || (x) == '\0' || (x) == (u_char)'\377') 67 68 void 69 scsi_command(fd, cmd, cmdlen, data, datalen, timeout, flags) 70 int fd; 71 void *cmd; 72 size_t cmdlen; 73 void *data; 74 size_t datalen; 75 int timeout, flags; 76 { 77 scsireq_t req; 78 79 memset(&req, 0, sizeof(req)); 80 81 memcpy(req.cmd, cmd, cmdlen); 82 req.cmdlen = cmdlen; 83 req.databuf = data; 84 req.datalen = datalen; 85 req.timeout = timeout; 86 req.flags = flags; 87 req.senselen = SENSEBUFLEN; 88 89 if (ioctl(fd, SCIOCCOMMAND, &req) == -1) 90 err(1, "SCIOCCOMMAND"); 91 92 if (req.retsts == SCCMD_OK) 93 return; 94 95 /* Some problem; report it and exit. */ 96 if (req.retsts == SCCMD_TIMEOUT) 97 fprintf(stderr, "%s: SCSI command timed out\n", dvname); 98 else if (req.retsts == SCCMD_BUSY) 99 fprintf(stderr, "%s: device is busy\n", dvname); 100 else if (req.retsts == SCCMD_SENSE) 101 scsi_print_sense(dvname, &req, 1); 102 else 103 fprintf(stderr, "%s: device had unknown status %x\n", dvname, 104 req.retsts); 105 106 exit(1); 107 } 108 109 void 110 scsi_mode_sense(fd, pgcode, pctl, buf, len) 111 int fd; 112 u_int8_t pgcode, pctl; 113 void *buf; 114 size_t len; 115 { 116 struct scsipi_mode_sense cmd; 117 118 memset(&cmd, 0, sizeof(cmd)); 119 memset(buf, 0, len); 120 121 cmd.opcode = MODE_SENSE; 122 cmd.page = pgcode | pctl; 123 cmd.length = len; 124 125 scsi_command(fd, &cmd, sizeof(cmd), buf, len, 10000, SCCMD_READ); 126 } 127 128 void 129 scsi_mode_select(fd, byte2, buf, len) 130 int fd; 131 u_int8_t byte2; 132 void *buf; 133 size_t len; 134 { 135 struct scsipi_mode_select cmd; 136 137 memset(&cmd, 0, sizeof(cmd)); 138 139 cmd.opcode = MODE_SELECT; 140 cmd.byte2 = SMS_PF | byte2; 141 cmd.length = len; 142 143 scsi_command(fd, &cmd, sizeof(cmd), buf, len, 10000, SCCMD_WRITE); 144 } 145 146 void 147 scsi_request_sense(fd, buf, len) 148 int fd; 149 void *buf; 150 size_t len; 151 { 152 struct scsipi_sense cmd; 153 154 memset(&cmd, 0, sizeof(cmd)); 155 memset(buf, 0, len); 156 157 cmd.opcode = REQUEST_SENSE; 158 cmd.length = len; 159 scsi_command(fd, &cmd, sizeof(cmd), buf, len, 10000, SCCMD_READ); 160 } 161 162 void 163 scsi_strvis(sdst, dlen, ssrc, slen) 164 char *sdst; 165 size_t dlen; 166 const char *ssrc; 167 size_t slen; 168 { 169 u_char *dst = (u_char *)sdst; 170 const u_char *src = (const u_char *)ssrc; 171 172 /* Trim leading and trailing blanks and NULs. */ 173 while (slen > 0 && STRVIS_ISWHITE(src[0])) 174 ++src, --slen; 175 while (slen > 0 && STRVIS_ISWHITE(src[slen - 1])) 176 --slen; 177 178 while (slen > 0) { 179 if (*src < 0x20 || *src >= 0x80) { 180 /* non-printable characters */ 181 dlen -= 4; 182 if (dlen < 1) 183 break; 184 *dst++ = '\\'; 185 *dst++ = ((*src & 0300) >> 6) + '0'; 186 *dst++ = ((*src & 0070) >> 3) + '0'; 187 *dst++ = ((*src & 0007) >> 0) + '0'; 188 } else if (*src == '\\') { 189 /* quote characters */ 190 dlen -= 2; 191 if (dlen < 1) 192 break; 193 *dst++ = '\\'; 194 *dst++ = '\\'; 195 } else { 196 /* normal characters */ 197 if (--dlen < 1) 198 break; 199 *dst++ = *src; 200 } 201 ++src, --slen; 202 } 203 204 *dst++ = 0; 205 } 206
Indexes created Mon Sep 22 10:09:38 GMT 2025