1 /* $NetBSD: ophandlers.c,v 1.8 2000/11/28 22:31:37 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/types.h> 40 #include <sys/ioctl.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <fcntl.h> 44 #include <string.h> 45 #include <stdio.h> 46 #include <string.h> 47 #include <unistd.h> 48 49 #include <machine/eeprom.h> 50 #include <machine/openpromio.h> 51 52 #include "defs.h" 53 54 extern char *path_openprom; 55 extern int eval; 56 extern int verbose; 57 58 static char err_str[BUFSIZE]; 59 60 static void op_notsupp (struct extabent *, struct opiocdesc *, char *); 61 62 /* 63 * There are several known fields that I either don't know how to 64 * deal with or require special treatment. 65 */ 66 static struct extabent opextab[] = { 67 { "security-password", op_notsupp }, 68 { "security-mode", op_notsupp }, 69 { "oem-logo", op_notsupp }, 70 { NULL, op_notsupp }, 71 }; 72 73 #define BARF(str1, str2) { \ 74 snprintf(err_str, sizeof err_str, "%s: %s", (str1), (str2)); \ 75 ++eval; \ 76 return (err_str); \ 77 }; 78 79 void 80 op_action(keyword, arg) 81 char *keyword, *arg; 82 { 83 char *cp; 84 85 if ((cp = op_handler(keyword, arg)) != NULL) 86 warnx("%s", cp); 87 return; 88 } 89 90 #if defined(__sparc__) && !defined(__arch64__) 91 int 92 check_for_openprom() 93 { 94 int fd, rv, optnode; 95 96 /* if we can't open it, obviously we can't use it. */ 97 if ((fd = open(path_openprom, O_RDONLY)) < 0) 98 return (0); 99 100 /* check for the presence of OpenFirmware with OPIOCGETOPTNODE */ 101 rv = ioctl(fd, OPIOCGETOPTNODE, (char *)&optnode); 102 close (fd); 103 104 return (rv == 0); 105 } 106 #endif 107 108 char * 109 op_handler(keyword, arg) 110 char *keyword, *arg; 111 { 112 struct opiocdesc opio; 113 struct extabent *ex; 114 char opio_buf[BUFSIZE]; 115 int fd, optnode; 116 117 if ((fd = open(path_openprom, arg ? O_RDWR : O_RDONLY, 0640)) < 0) 118 BARF(path_openprom, strerror(errno)); 119 120 /* Check to see if it's a special-case keyword. */ 121 for (ex = opextab; ex->ex_keyword != NULL; ++ex) 122 if (strcmp(ex->ex_keyword, keyword) == 0) 123 break; 124 125 if (ioctl(fd, OPIOCGETOPTNODE, (char *)&optnode) < 0) 126 BARF("OPIOCGETOPTNODE", strerror(errno)); 127 128 memset(&opio_buf[0], 0, sizeof(opio_buf)); 129 memset(&opio, 0, sizeof(opio)); 130 opio.op_nodeid = optnode; 131 opio.op_name = keyword; 132 opio.op_namelen = strlen(opio.op_name); 133 134 if (arg) { 135 if (verbose) { 136 printf("old: "); 137 138 opio.op_buf = &opio_buf[0]; 139 opio.op_buflen = sizeof(opio_buf); 140 if (ioctl(fd, OPIOCGET, (char *)&opio) < 0) 141 BARF("OPIOCGET", strerror(errno)); 142 143 if (opio.op_buflen <= 0) { 144 printf("nothing available for %s\n", keyword); 145 goto out; 146 } 147 148 if (ex->ex_keyword != NULL) 149 (*ex->ex_handler)(ex, &opio, NULL); 150 else 151 printf("%s\n", opio.op_buf); 152 } 153 out: 154 if (ex->ex_keyword != NULL) 155 (*ex->ex_handler)(ex, &opio, arg); 156 else { 157 opio.op_buf = arg; 158 opio.op_buflen = strlen(arg); 159 } 160 161 if (ioctl(fd, OPIOCSET, (char *)&opio) < 0) 162 BARF("invalid keyword", keyword); 163 164 if (verbose) { 165 printf("new: "); 166 if (ex->ex_keyword != NULL) 167 (*ex->ex_handler)(ex, &opio, NULL); 168 else 169 printf("%s\n", opio.op_buf); 170 } 171 } else { 172 opio.op_buf = &opio_buf[0]; 173 opio.op_buflen = sizeof(opio_buf); 174 if (ioctl(fd, OPIOCGET, (char *)&opio) < 0) 175 BARF("OPIOCGET", strerror(errno)); 176 177 if (opio.op_buflen <= 0) { 178 (void)snprintf(err_str, sizeof err_str, 179 "nothing available for %s", keyword); 180 return (err_str); 181 } 182 183 if (ex->ex_keyword != NULL) 184 (*ex->ex_handler)(ex, &opio, NULL); 185 else 186 printf("%s=%s\n", keyword, opio.op_buf); 187 } 188 189 (void)close(fd); 190 return (NULL); 191 } 192 193 /* ARGSUSED */ 194 static void 195 op_notsupp(exent, opiop, arg) 196 struct extabent *exent; 197 struct opiocdesc *opiop; 198 char *arg; 199 { 200 201 warnx("property `%s' not yet supported", exent->ex_keyword); 202 } 203 204 /* 205 * XXX: This code is quite ugly. You have been warned. 206 * (Really! This is the only way I could get it to work!) 207 */ 208 void 209 op_dump() 210 { 211 struct opiocdesc opio1, opio2; 212 struct extabent *ex; 213 char buf1[BUFSIZE], buf2[BUFSIZE], buf3[BUFSIZE], buf4[BUFSIZE]; 214 int fd, optnode; 215 216 if ((fd = open(path_openprom, O_RDONLY, 0640)) < 0) 217 err(1, "open: %s", path_openprom); 218 219 if (ioctl(fd, OPIOCGETOPTNODE, (char *)&optnode) < 0) 220 err(1, "OPIOCGETOPTNODE"); 221 222 memset(&opio1, 0, sizeof(opio1)); 223 224 /* This will grab the first property name from OPIOCNEXTPROP. */ 225 memset(buf1, 0, sizeof(buf1)); 226 memset(buf2, 0, sizeof(buf2)); 227 228 opio1.op_nodeid = opio2.op_nodeid = optnode; 229 230 opio1.op_name = buf1; 231 opio1.op_buf = buf2; 232 233 opio2.op_name = buf3; 234 opio2.op_buf = buf4; 235 236 /* 237 * For reference: opio1 is for obtaining the name. Pass the 238 * name of the last property read in op_name, and the next one 239 * will be returned in op_buf. To get the first name, pass 240 * an empty string. There are no more properties when an 241 * empty string is returned. 242 * 243 * opio2 is for obtaining the value associated with that name. 244 * For some crazy reason, it seems as if we need to do all 245 * of that gratuitious zapping and copying. *sigh* 246 */ 247 for (;;) { 248 opio1.op_namelen = strlen(opio1.op_name); 249 opio1.op_buflen = sizeof(buf2); 250 251 if (ioctl(fd, OPIOCNEXTPROP, (char *)&opio1) < 0) 252 err(1, "ioctl: OPIOCNEXTPROP"); 253 254 /* 255 * The name of the property we wish to get the 256 * value for has been stored in the value field 257 * of opio1. If the length of the name is 0, there 258 * are no more properties left. 259 */ 260 strcpy(opio2.op_name, opio1.op_buf); /* XXX strcpy is safe */ 261 opio2.op_namelen = strlen(opio2.op_name); 262 263 if (opio2.op_namelen == 0) { 264 (void)close(fd); 265 return; 266 } 267 268 memset(opio2.op_buf, 0, sizeof(buf4)); 269 opio2.op_buflen = sizeof(buf4); 270 271 if (ioctl(fd, OPIOCGET, (char *)&opio2) < 0) 272 err(1, "ioctl: OPIOCGET"); 273 274 for (ex = opextab; ex->ex_keyword != NULL; ++ex) 275 if (strcmp(ex->ex_keyword, opio2.op_name) == 0) 276 break; 277 278 if (ex->ex_keyword != NULL) 279 (*ex->ex_handler)(ex, &opio2, NULL); 280 else 281 printf("%s=%s\n", opio2.op_name, opio2.op_buf); 282 283 /* 284 * Place the name of the last read value back into 285 * opio1 so that we may obtain the next name. 286 */ 287 memset(opio1.op_name, 0, sizeof(buf1)); 288 memset(opio1.op_buf, 0, sizeof(buf2)); 289 strcpy(opio1.op_name, opio2.op_name); /* XXX strcpy is safe */ 290 } 291 /* NOTREACHED */ 292 } 293