scsi_subr.c revision 1.7
1 /* $NetBSD: scsi_subr.c,v 1.7 2002/10/08 20:17:06 soren 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 46 #include <sys/param.h> 47 #include <sys/ioctl.h> 48 #include <sys/scsiio.h> 49 #include <err.h> 50 #include <errno.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 56 #include <dev/scsipi/scsipi_all.h> 57 58 #include "extern.h" 59 60 #define STRVIS_ISWHITE(x) ((x) == ' ' || (x) == '\0' || (x) == (u_char)'\377') 61 62 void 63 scsi_command(fd, cmd, cmdlen, data, datalen, timeout, flags) 64 int fd; 65 void *cmd; 66 size_t cmdlen; 67 void *data; 68 size_t datalen; 69 int timeout, flags; 70 { 71 scsireq_t req; 72 73 memset(&req, 0, sizeof(req)); 74 75 memcpy(req.cmd, cmd, cmdlen); 76 req.cmdlen = cmdlen; 77 req.databuf = data; 78 req.datalen = datalen; 79 req.timeout = timeout; 80 req.flags = flags; 81 req.senselen = SENSEBUFLEN; 82 83 if (ioctl(fd, SCIOCCOMMAND, &req) == -1) 84 err(1, "SCIOCCOMMAND"); 85 86 if (req.retsts == SCCMD_OK) 87 return; 88 89 /* Some problem; report it and exit. */ 90 if (req.retsts == SCCMD_TIMEOUT) 91 fprintf(stderr, "%s: SCSI command timed out\n", dvname); 92 else if (req.retsts == SCCMD_BUSY) 93 fprintf(stderr, "%s: device is busy\n", dvname); 94 else if (req.retsts == SCCMD_SENSE) 95 scsi_print_sense(dvname, &req, 1); 96 else 97 fprintf(stderr, "%s: device had unknown status %x\n", dvname, 98 req.retsts); 99 100 exit(1); 101 } 102 103 void 104 scsi_mode_sense(fd, pgcode, pctl, buf, len) 105 int fd; 106 u_int8_t pgcode, pctl; 107 void *buf; 108 size_t len; 109 { 110 struct scsipi_mode_sense cmd; 111 112 memset(&cmd, 0, sizeof(cmd)); 113 memset(buf, 0, len); 114 115 cmd.opcode = MODE_SENSE; 116 cmd.page = pgcode | pctl; 117 cmd.u_len.scsi.length = len; 118 119 scsi_command(fd, &cmd, sizeof(cmd), buf, len, 10000, SCCMD_READ); 120 } 121 122 void 123 scsi_mode_select(fd, byte2, buf, len) 124 int fd; 125 u_int8_t byte2; 126 void *buf; 127 size_t len; 128 { 129 struct scsipi_mode_select cmd; 130 131 memset(&cmd, 0, sizeof(cmd)); 132 133 cmd.opcode = MODE_SELECT; 134 cmd.byte2 = SMS_PF | byte2; 135 cmd.u_len.scsi.length = len; 136 137 scsi_command(fd, &cmd, sizeof(cmd), buf, len, 10000, SCCMD_WRITE); 138 } 139 140 void 141 scsi_request_sense(fd, buf, len) 142 int fd; 143 void *buf; 144 size_t len; 145 { 146 struct scsipi_sense cmd; 147 148 memset(&cmd, 0, sizeof(cmd)); 149 memset(buf, 0, len); 150 151 cmd.opcode = REQUEST_SENSE; 152 cmd.length = len; 153 scsi_command(fd, &cmd, sizeof(cmd), buf, len, 10000, SCCMD_READ); 154 } 155 156 void 157 scsi_strvis(sdst, dlen, ssrc, slen) 158 char *sdst; 159 size_t dlen; 160 const char *ssrc; 161 size_t slen; 162 { 163 u_char *dst = (u_char *)sdst; 164 const u_char *src = (const u_char *)ssrc; 165 166 /* Trim leading and trailing blanks and NULs. */ 167 while (slen > 0 && STRVIS_ISWHITE(src[0])) 168 ++src, --slen; 169 while (slen > 0 && STRVIS_ISWHITE(src[slen - 1])) 170 --slen; 171 172 while (slen > 0) { 173 if (*src < 0x20 || *src >= 0x80) { 174 /* non-printable characters */ 175 dlen -= 4; 176 if (dlen < 1) 177 break; 178 *dst++ = '\\'; 179 *dst++ = ((*src & 0300) >> 6) + '0'; 180 *dst++ = ((*src & 0070) >> 3) + '0'; 181 *dst++ = ((*src & 0007) >> 0) + '0'; 182 } else if (*src == '\\') { 183 /* quote characters */ 184 dlen -= 2; 185 if (dlen < 1) 186 break; 187 *dst++ = '\\'; 188 *dst++ = '\\'; 189 } else { 190 /* normal characters */ 191 if (--dlen < 1) 192 break; 193 *dst++ = *src; 194 } 195 ++src, --slen; 196 } 197 198 *dst++ = 0; 199 } 200
Indexes created Mon Sep 22 13:09:51 GMT 2025