1 /* $NetBSD: ophandlers.c,v 1.14 2026/09/21 09:37:48 macallan 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/ioctl.h> 34 #include <err.h> 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <stdio.h> 38 #include <string.h> 39 #include <unistd.h> 40 41 #include <machine/eeprom.h> 42 #include <machine/openpromio.h> 43 44 #include "defs.h" 45 46 extern char *path_openprom; 47 extern int eval; 48 extern int verbose; 49 50 static char err_str[BUFSIZE]; 51 52 static void op_notsupp (const struct extabent *, struct opiocdesc *, char *); 53 static void op_data(const struct extabent *, struct opiocdesc *, char *); 54 static void op_bitmap(const struct extabent *, struct opiocdesc *, char *); 55 56 /* 57 * There are several known fields that I either don't know how to 58 * deal with or require special treatment. 59 */ 60 static const struct extabent opextab[] = { 61 { "security-password", op_notsupp }, 62 { "security-mode", op_notsupp }, 63 { "hardware-revision", op_data }, 64 { "oem-logo", op_bitmap }, 65 { NULL, op_notsupp }, 66 }; 67 68 #define BARF(str1, str2) { \ 69 snprintf(err_str, sizeof err_str, "%s: %s", (str1), (str2)); \ 70 ++eval; \ 71 return (err_str); \ 72 }; 73 74 void 75 op_action(char *keyword, char *arg) 76 { 77 char *cp; 78 79 if ((cp = op_handler(keyword, arg)) != NULL) 80 warnx("%s", cp); 81 return; 82 } 83 84 int 85 check_for_openprom(void) 86 { 87 int fd, rv, optnode; 88 89 /* if we can't open it, obviously we can't use it. */ 90 if ((fd = open(path_openprom, O_RDONLY)) < 0) 91 return (0); 92 93 /* check for the presence of OpenFirmware with OPIOCGETOPTNODE */ 94 rv = ioctl(fd, OPIOCGETOPTNODE, (char *)&optnode); 95 close (fd); 96 97 return (rv == 0); 98 } 99 100 char * 101 op_handler(char *keyword, char *arg) 102 { 103 struct opiocdesc opio; 104 const struct extabent *ex; 105 char opio_buf[BUFSIZE]; 106 int fd, optnode; 107 108 if ((fd = open(path_openprom, arg ? O_RDWR : O_RDONLY, 0640)) < 0) 109 BARF(path_openprom, strerror(errno)); 110 111 /* Check to see if it's a special-case keyword. */ 112 for (ex = opextab; ex->ex_keyword != NULL; ++ex) 113 if (strcmp(ex->ex_keyword, keyword) == 0) 114 break; 115 116 if (ioctl(fd, OPIOCGETOPTNODE, (char *)&optnode) < 0) { 117 (void)close(fd); 118 BARF("OPIOCGETOPTNODE", strerror(errno)); 119 } 120 121 memset(&opio_buf[0], 0, sizeof(opio_buf)); 122 memset(&opio, 0, sizeof(opio)); 123 opio.op_nodeid = optnode; 124 opio.op_name = keyword; 125 opio.op_namelen = strlen(opio.op_name); 126 127 if (arg) { 128 if (verbose) { 129 printf("old: "); 130 131 opio.op_buf = &opio_buf[0]; 132 opio.op_buflen = sizeof(opio_buf); 133 if (ioctl(fd, OPIOCGET, (char *)&opio) < 0) { 134 (void)close(fd); 135 BARF("OPIOCGET", strerror(errno)); 136 } 137 138 if (opio.op_buflen <= 0) { 139 printf("nothing available for %s\n", keyword); 140 goto out; 141 } 142 143 if (ex->ex_keyword != NULL) 144 (*ex->ex_handler)(ex, &opio, NULL); 145 else 146 printf("%s\n", opio.op_buf); 147 } 148 out: 149 if (ex->ex_keyword != NULL) 150 (*ex->ex_handler)(ex, &opio, arg); 151 else { 152 opio.op_buf = arg; 153 opio.op_buflen = strlen(arg); 154 } 155 156 if (ioctl(fd, OPIOCSET, (char *)&opio) < 0) { 157 (void)close(fd); 158 BARF("invalid keyword", keyword); 159 } 160 161 if (verbose) { 162 printf("new: "); 163 if (ex->ex_keyword != NULL) 164 (*ex->ex_handler)(ex, &opio, NULL); 165 else 166 printf("%s\n", opio.op_buf); 167 } 168 } else { 169 opio.op_buf = &opio_buf[0]; 170 opio.op_buflen = sizeof(opio_buf); 171 if (ioctl(fd, OPIOCGET, (char *)&opio) < 0) { 172 (void)close(fd); 173 BARF("OPIOCGET", strerror(errno)); 174 } 175 176 if (opio.op_buflen <= 0) { 177 (void)snprintf(err_str, sizeof err_str, 178 "nothing available for %s", keyword); 179 return (err_str); 180 } 181 182 if (ex->ex_keyword != NULL) 183 (*ex->ex_handler)(ex, &opio, NULL); 184 else 185 printf("%s=%s\n", keyword, opio.op_buf); 186 } 187 188 (void)close(fd); 189 return (NULL); 190 } 191 192 /* ARGSUSED */ 193 static void 194 op_notsupp(const struct extabent *exent, struct opiocdesc *opiop, char *arg) 195 { 196 197 warnx("property `%s' not yet supported", exent->ex_keyword); 198 } 199 200 #define MIN(a, b) ((a) < (b) ? (a) : (b)) 201 202 static void 203 op_data(const struct extabent *exent, struct opiocdesc *opiop, char *arg) 204 { 205 int i, j; 206 207 printf("%s:\n", exent->ex_keyword); 208 for (i = 0; i < opiop->op_buflen; i += 16) { 209 printf("%04x:", i); 210 for (j = 0; j < MIN(16, opiop->op_buflen - i); j++) { 211 printf(" %02x", opiop->op_buf[i + j] & 0xff); 212 } 213 printf("\n"); 214 } 215 } 216 217 static void 218 op_bitmap(const struct extabent *exent, struct opiocdesc *opiop, char *arg) 219 { 220 int i, j, k, b; 221 222 printf("%s:\n", exent->ex_keyword); 223 for (i = 0; i < opiop->op_buflen; i += 8) { 224 for (j = 0; j < MIN(8, opiop->op_buflen - i); j++) { 225 b = opiop->op_buf[i + j]; 226 for (k = 0; k < 8; k++) { 227 printf("%c", b & 0x80 ? '#' : ' '); 228 b <<= 1; 229 } 230 } 231 printf("\n"); 232 } 233 } 234 235 /* 236 * XXX: This code is quite ugly. You have been warned. 237 * (Really! This is the only way I could get it to work!) 238 */ 239 void 240 op_dump(void) 241 { 242 struct opiocdesc opio1, opio2; 243 const struct extabent *ex; 244 char buf1[BUFSIZE], buf2[BUFSIZE], buf3[BUFSIZE], buf4[BUFSIZE]; 245 int fd, optnode; 246 247 if ((fd = open(path_openprom, O_RDONLY, 0640)) < 0) 248 err(1, "open: %s", path_openprom); 249 250 if (ioctl(fd, OPIOCGETOPTNODE, (char *)&optnode) < 0) 251 err(1, "OPIOCGETOPTNODE"); 252 253 memset(&opio1, 0, sizeof(opio1)); 254 255 /* This will grab the first property name from OPIOCNEXTPROP. */ 256 memset(buf1, 0, sizeof(buf1)); 257 memset(buf2, 0, sizeof(buf2)); 258 259 opio1.op_nodeid = opio2.op_nodeid = optnode; 260 261 opio1.op_name = buf1; 262 opio1.op_buf = buf2; 263 264 opio2.op_name = buf3; 265 opio2.op_buf = buf4; 266 267 /* 268 * For reference: opio1 is for obtaining the name. Pass the 269 * name of the last property read in op_name, and the next one 270 * will be returned in op_buf. To get the first name, pass 271 * an empty string. There are no more properties when an 272 * empty string is returned. 273 * 274 * opio2 is for obtaining the value associated with that name. 275 * For some crazy reason, it seems as if we need to do all 276 * of that gratuitious zapping and copying. *sigh* 277 */ 278 for (;;) { 279 opio1.op_namelen = strlen(opio1.op_name); 280 opio1.op_buflen = sizeof(buf2); 281 282 if (ioctl(fd, OPIOCNEXTPROP, (char *)&opio1) < 0) 283 err(1, "ioctl: OPIOCNEXTPROP"); 284 285 /* 286 * The name of the property we wish to get the 287 * value for has been stored in the value field 288 * of opio1. If the length of the name is 0, there 289 * are no more properties left. 290 */ 291 strcpy(opio2.op_name, opio1.op_buf); /* XXX strcpy is safe */ 292 opio2.op_namelen = strlen(opio2.op_name); 293 294 if (opio2.op_namelen == 0) { 295 (void)close(fd); 296 return; 297 } 298 299 memset(opio2.op_buf, 0, sizeof(buf4)); 300 opio2.op_buflen = sizeof(buf4); 301 302 if (ioctl(fd, OPIOCGET, (char *)&opio2) < 0) 303 err(1, "ioctl: OPIOCGET"); 304 305 for (ex = opextab; ex->ex_keyword != NULL; ++ex) 306 if (strcmp(ex->ex_keyword, opio2.op_name) == 0) 307 break; 308 309 if (ex->ex_keyword != NULL) 310 (*ex->ex_handler)(ex, &opio2, NULL); 311 else 312 printf("%s=%s\n", opio2.op_name, opio2.op_buf); 313 314 /* 315 * Place the name of the last read value back into 316 * opio1 so that we may obtain the next name. 317 */ 318 memset(opio1.op_name, 0, sizeof(buf1)); 319 memset(opio1.op_buf, 0, sizeof(buf2)); 320 strcpy(opio1.op_name, opio2.op_name); /* XXX strcpy is safe */ 321 } 322 /* NOTREACHED */ 323 } 324
Indexes created Sun Oct 25 00:26:45 UTC 2026