ofhandlers.c revision 1.3
1 /* $NetBSD: ofhandlers.c,v 1.3 2007/01/16 17:32:04 hubertf 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 <stdio.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 #include <dev/ofw/openfirmio.h> 49 50 #include "defs.h" 51 52 extern char *path_openfirm; 53 extern int eval; 54 extern int verbose; 55 56 static char err_str[BUFSIZE]; 57 58 static void of_notsupp (struct extabent *, struct ofiocdesc *, char *); 59 static void of_uint32h (struct extabent *, struct ofiocdesc *, char *); 60 static void of_uint32d (struct extabent *, struct ofiocdesc *, 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 ofextab[] = { 67 { "security-password", of_notsupp }, 68 { "security-mode", of_notsupp }, 69 { "oem-logo", of_notsupp }, 70 { "oem-banner", of_notsupp }, 71 { "real-base", of_uint32h }, 72 { "real-size", of_uint32h }, 73 { "load-base", of_uint32h }, 74 { "virt-base", of_uint32h }, 75 { "virt-size", of_uint32h }, 76 { "screen-#columns", of_uint32d }, 77 { "screen-#rows", of_uint32d }, 78 { "selftest-#megs", of_uint32d }, 79 { NULL, of_notsupp }, 80 }; 81 82 #define BARF(str1, str2) { \ 83 snprintf(err_str, sizeof err_str, "%s: %s", (str1), (str2)); \ 84 ++eval; \ 85 return (err_str); \ 86 }; 87 88 void 89 of_action(keyword, arg) 90 char *keyword, *arg; 91 { 92 char *cp; 93 94 if ((cp = of_handler(keyword, arg)) != NULL) 95 warnx("%s", cp); 96 return; 97 } 98 99 char * 100 of_handler(keyword, arg) 101 char *keyword, *arg; 102 { 103 struct ofiocdesc ofio; 104 struct extabent *ex; 105 char ofio_buf[BUFSIZE]; 106 int fd, optnode; 107 108 if ((fd = open(path_openfirm, arg ? O_RDWR : O_RDONLY, 0640)) < 0) 109 BARF(path_openfirm, strerror(errno)); 110 111 /* Check to see if it's a special-case keyword. */ 112 for (ex = ofextab; ex->ex_keyword != NULL; ++ex) 113 if (strcmp(ex->ex_keyword, keyword) == 0) 114 break; 115 116 if (ioctl(fd, OFIOCGETOPTNODE, (char *)&optnode) < 0) 117 BARF("OFIOCGETOPTNODE", strerror(errno)); 118 119 memset(&ofio_buf[0], 0, sizeof(ofio_buf)); 120 memset(&ofio, 0, sizeof(ofio)); 121 ofio.of_nodeid = optnode; 122 ofio.of_name = keyword; 123 ofio.of_namelen = strlen(ofio.of_name); 124 125 if (arg) { 126 if (verbose) { 127 printf("old: "); 128 129 ofio.of_buf = &ofio_buf[0]; 130 ofio.of_buflen = sizeof(ofio_buf); 131 if (ioctl(fd, OFIOCGET, (char *)&ofio) < 0) 132 BARF("OFIOCGET", strerror(errno)); 133 134 if (ofio.of_buflen <= 0) { 135 printf("nothing available for %s\n", keyword); 136 goto out; 137 } 138 139 if (ex->ex_keyword != NULL) 140 (*ex->ex_handler)(ex, &ofio, NULL); 141 else 142 printf("%s\n", ofio.of_buf); 143 } 144 out: 145 if (ex->ex_keyword != NULL) 146 (*ex->ex_handler)(ex, &ofio, arg); 147 else { 148 ofio.of_buf = arg; 149 ofio.of_buflen = strlen(arg); 150 } 151 152 if (ioctl(fd, OFIOCSET, (char *)&ofio) < 0) 153 BARF("invalid keyword", keyword); 154 155 if (verbose) { 156 printf("new: "); 157 if (ex->ex_keyword != NULL) 158 (*ex->ex_handler)(ex, &ofio, NULL); 159 else 160 printf("%s\n", ofio.of_buf); 161 } 162 } else { 163 ofio.of_buf = &ofio_buf[0]; 164 ofio.of_buflen = sizeof(ofio_buf); 165 if (ioctl(fd, OFIOCGET, (char *)&ofio) < 0) 166 BARF("OFIOCGET", strerror(errno)); 167 168 if (ofio.of_buflen <= 0) { 169 (void)snprintf(err_str, sizeof err_str, 170 "nothing available for %s", keyword); 171 return (err_str); 172 } 173 174 if (ex->ex_keyword != NULL) 175 (*ex->ex_handler)(ex, &ofio, NULL); 176 else 177 printf("%s=%s\n", keyword, ofio.of_buf); 178 } 179 180 (void)close(fd); 181 return (NULL); 182 } 183 184 /* ARGSUSED */ 185 static void 186 of_notsupp(exent, ofiop, arg) 187 struct extabent *exent; 188 struct ofiocdesc *ofiop; 189 char *arg; 190 { 191 192 warnx("property `%s' not yet supported", exent->ex_keyword); 193 } 194 195 static void 196 of_uint32h(exent, ofiop, arg) 197 struct extabent *exent; 198 struct ofiocdesc *ofiop; 199 char *arg; 200 { 201 202 printf("%s=0x%08x\n", exent->ex_keyword, *(uint32_t *)ofiop->of_buf); 203 } 204 205 static void 206 of_uint32d(exent, ofiop, arg) 207 struct extabent *exent; 208 struct ofiocdesc *ofiop; 209 char *arg; 210 { 211 212 printf("%s=%d\n", exent->ex_keyword, *(uint32_t *)ofiop->of_buf); 213 } 214 215 /* 216 * XXX: This code is quite ugly. You have been warned. 217 * (Really! This is the only way I could get it to work!) 218 */ 219 void 220 of_dump() 221 { 222 struct ofiocdesc ofio1, ofio2; 223 struct extabent *ex; 224 char buf1[BUFSIZE], buf2[BUFSIZE], buf3[BUFSIZE], buf4[BUFSIZE]; 225 int fd, optnode; 226 227 if ((fd = open(path_openfirm, O_RDONLY, 0640)) < 0) 228 err(1, "open: %s", path_openfirm); 229 230 if (ioctl(fd, OFIOCGETOPTNODE, (char *)&optnode) < 0) 231 err(1, "OFIOCGETOPTNODE"); 232 233 memset(&ofio1, 0, sizeof(ofio1)); 234 235 /* This will grab the first property name from OPIOCNEXTPROP. */ 236 memset(buf1, 0, sizeof(buf1)); 237 memset(buf2, 0, sizeof(buf2)); 238 239 ofio1.of_nodeid = ofio2.of_nodeid = optnode; 240 241 ofio1.of_name = buf1; 242 ofio1.of_buf = buf2; 243 244 ofio2.of_name = buf3; 245 ofio2.of_buf = buf4; 246 247 /* 248 * For reference: ofio1 is for obtaining the name. Pass the 249 * name of the last property read in of_name, and the next one 250 * will be returned in of_buf. To get the first name, pass 251 * an empty string. There are no more properties when an 252 * empty string is returned. 253 * 254 * ofio2 is for obtaining the value associated with that name. 255 * For some crazy reason, it seems as if we need to do all 256 * of that gratuitious zapping and copying. *sigh* 257 */ 258 for (;;) { 259 ofio1.of_namelen = strlen(ofio1.of_name); 260 ofio1.of_buflen = sizeof(buf2); 261 262 if (ioctl(fd, OFIOCNEXTPROP, (char *)&ofio1) < 0) { 263 close(fd); 264 return; 265 /* err(1, "ioctl: OFIOCNEXTPROP"); */ 266 } 267 268 /* 269 * The name of the property we wish to get the 270 * value for has been stored in the value field 271 * of ofio1. If the length of the name is 0, there 272 * are no more properties left. 273 */ 274 strcpy(ofio2.of_name, ofio1.of_buf); /* XXX strcpy is safe */ 275 ofio2.of_namelen = strlen(ofio2.of_name); 276 277 if (ofio2.of_namelen == 0) { 278 (void)close(fd); 279 return; 280 } 281 282 memset(ofio2.of_buf, 0, sizeof(buf4)); 283 ofio2.of_buflen = sizeof(buf4); 284 285 if (ioctl(fd, OFIOCGET, (char *)&ofio2) < 0) 286 err(1, "ioctl: OFIOCGET"); 287 288 for (ex = ofextab; ex->ex_keyword != NULL; ++ex) 289 if (strcmp(ex->ex_keyword, ofio2.of_name) == 0) 290 break; 291 292 if (ex->ex_keyword != NULL) 293 (*ex->ex_handler)(ex, &ofio2, NULL); 294 else 295 printf("%s=%s\n", ofio2.of_name, ofio2.of_buf); 296 297 /* 298 * Place the name of the last read value back into 299 * ofio1 so that we may obtain the next name. 300 */ 301 memset(ofio1.of_name, 0, sizeof(buf1)); 302 memset(ofio1.of_buf, 0, sizeof(buf2)); 303 strcpy(ofio1.of_name, ofio2.of_name); /* XXX strcpy is safe */ 304 } 305 /* NOTREACHED */ 306 } 307
Indexes created Mon Oct 13 15:10:03 GMT 2025