1 /* $OpenBSD: config.h,v 1.19 2003/06/02 23:36:52 millert Exp $ */ 2 /* $NetBSD: config.h,v 1.30 1997/02/02 21:12:30 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This software was developed by the Computer Systems Engineering group 9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 10 * contributed to Berkeley. 11 * 12 * All advertising materials mentioning features or use of this software 13 * must display the following acknowledgement: 14 * This product includes software developed by the University of 15 * California, Lawrence Berkeley Laboratories. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * from: @(#)config.h 8.1 (Berkeley) 6/6/93 42 */ 43 44 /* 45 * config.h: Global definitions for "config" 46 */ 47 48 #include <sys/types.h> 49 #include <sys/param.h> 50 51 #if !defined(MAKE_BOOTSTRAP) && defined(BSD) 52 #include <sys/cdefs.h> 53 #include <paths.h> 54 #endif /* ...BSD */ 55 56 #include <stdlib.h> 57 #include <unistd.h> 58 59 /* These are really for MAKE_BOOTSTRAP but harmless. */ 60 #ifndef __dead 61 #define __dead 62 #endif 63 #ifndef _PATH_DEVNULL 64 #define _PATH_DEVNULL "/dev/null" 65 #endif 66 67 68 /* 69 * Name/value lists. Values can be strings or pointers and/or can carry 70 * integers. The names can be NULL, resulting in simple value lists. 71 */ 72 struct nvlist { 73 struct nvlist *nv_next; 74 const char *nv_name; 75 union { 76 const char *un_str; 77 void *un_ptr; 78 } nv_un; 79 #define nv_str nv_un.un_str 80 #define nv_ptr nv_un.un_ptr 81 int nv_int; 82 }; 83 84 /* 85 * Kernel configurations. 86 */ 87 struct config { 88 struct config *cf_next; /* linked list */ 89 const char *cf_name; /* "vmunix" */ 90 int cf_lineno; /* source line */ 91 struct nvlist *cf_root; /* "root on ra0a" */ 92 struct nvlist *cf_swap; /* "swap on ra0b and ra1b" */ 93 struct nvlist *cf_dump; /* "dumps on ra0b" */ 94 }; 95 96 /* 97 * Attributes. These come in two flavors: "plain" and "interface". 98 * Plain attributes (e.g., "ether") simply serve to pull in files. 99 * Interface attributes (e.g., "scsi") carry three lists: locators, 100 * child devices, and references. The locators are those things 101 * that must be specified in order to configure a device instance 102 * using this attribute (e.g., "tg0 at scsi0"). The a_devs field 103 * lists child devices that can connect here (e.g., "tg"s), while 104 * the a_refs are parents that carry the attribute (e.g., actual 105 * SCSI host adapter drivers such as the SPARC "esp"). 106 */ 107 struct attr { 108 const char *a_name; /* name of this attribute */ 109 int a_iattr; /* true => allows children */ 110 struct nvlist *a_locs; /* locators required */ 111 int a_loclen; /* length of above list */ 112 struct nvlist *a_devs; /* children */ 113 struct nvlist *a_refs; /* parents */ 114 }; 115 116 /* 117 * The "base" part (struct devbase) of a device ("uba", "sd"; but not 118 * "uba2" or "sd0"). It may be found "at" one or more attributes, 119 * including "at root" (this is represented by a NULL attribute), as 120 * specified by the device attachments (struct deva). 121 * 122 * Each device may also export attributes. If any provide an output 123 * interface (e.g., "esp" provides "scsi"), other devices (e.g., 124 * "tg"s) can be found at instances of this one (e.g., "esp"s). 125 * Such a connection must provide locators as specified by that 126 * interface attribute (e.g., "target"). The base device can 127 * export both output (aka `interface') attributes, as well as 128 * import input (`plain') attributes. Device attachments may 129 * only import input attributes; it makes no sense to have a 130 * specific attachment export a new interface to other devices. 131 * 132 * Each base carries a list of instances (via d_ihead). Note that this 133 * list "skips over" aliases; those must be found through the instances 134 * themselves. Each base also carries a list of possible attachments, 135 * each of which specify a set of devices that the device can attach 136 * to, as well as the device instances that are actually using that 137 * attachment. 138 */ 139 struct devbase { 140 const char *d_name; /* e.g., "sd" */ 141 struct devbase *d_next; /* linked list */ 142 int d_isdef; /* set once properly defined */ 143 int d_ispseudo; /* is a pseudo-device */ 144 int d_major; /* used for "root on sd0", e.g. */ 145 struct nvlist *d_attrs; /* attributes, if any */ 146 int d_umax; /* highest unit number + 1 */ 147 struct devi *d_ihead; /* first instance, if any */ 148 struct devi **d_ipp; /* used for tacking on more instances */ 149 struct deva *d_ahead; /* first attachment, if any */ 150 struct deva **d_app; /* used for tacking on attachments */ 151 }; 152 153 struct deva { 154 const char *d_name; /* name of attachment, e.g. "com_isa" */ 155 struct deva *d_next; /* linked list */ 156 struct deva *d_bsame; /* list on same base */ 157 int d_isdef; /* set once properly defined */ 158 struct devbase *d_devbase; /* the base device */ 159 struct nvlist *d_atlist; /* e.g., "at tg" (attr list) */ 160 struct nvlist *d_attrs; /* attributes, if any */ 161 struct devi *d_ihead; /* first instance, if any */ 162 struct devi **d_ipp; /* used for tacking on more instances */ 163 }; 164 165 /* 166 * An "instance" of a device. The same instance may be listed more 167 * than once, e.g., "xx0 at isa? port FOO" + "xx0 at isa? port BAR". 168 * 169 * After everything has been read in and verified, the devi's are 170 * "packed" to collect all the information needed to generate ioconf.c. 171 * In particular, we try to collapse multiple aliases into a single entry. 172 * We then assign each "primary" (non-collapsed) instance a cfdata index. 173 * Note that there may still be aliases among these. 174 */ 175 struct devi { 176 /* created while parsing config file */ 177 const char *i_name; /* e.g., "sd0" */ 178 int i_unit; /* unit from name, e.g., 0 */ 179 int i_disable; /* device is disabled */ 180 struct devbase *i_base;/* e.g., pointer to "sd" base */ 181 struct devi *i_next; /* list of all instances */ 182 struct devi *i_bsame; /* list on same base */ 183 struct devi *i_asame; /* list on same base attachment */ 184 struct devi *i_alias; /* other aliases of this instance */ 185 const char *i_at; /* where this is "at" (NULL if at root) */ 186 struct attr *i_atattr; /* attr that allowed attach */ 187 struct devbase *i_atdev;/* if "at <devname><unit>", else NULL */ 188 struct deva *i_atdeva; 189 const char **i_locs; /* locators (as given by i_atattr) */ 190 int i_atunit; /* unit from "at" */ 191 int i_cfflags; /* flags from config line */ 192 int i_lineno; /* line # in config, for later errors */ 193 194 /* created during packing or ioconf.c generation */ 195 /* i_loclen via i_atattr->a_loclen */ 196 short i_collapsed; /* set => this alias no longer needed */ 197 short i_cfindex; /* our index in cfdata */ 198 short i_pvlen; /* number of parents */ 199 short i_pvoff; /* offset in parents.vec */ 200 short i_locoff; /* offset in locators.vec */ 201 struct devi **i_parents;/* the parents themselves */ 202 int i_locnami; /* my index into locnami[] */ 203 int i_plocnami; /* parent's locnami[] index */ 204 }; 205 /* special units */ 206 #define STAR (-1) /* unit number for, e.g., "sd*" */ 207 #define WILD (-2) /* unit number for, e.g., "sd?" */ 208 209 /* 210 * Files. Each file is either standard (always included) or optional, 211 * depending on whether it has names on which to *be* optional. The 212 * options field (fi_optx) is actually an expression tree, with nodes 213 * for OR, AND, and NOT, as well as atoms (words) representing some 214 * particular option. The node type is stored in the nv_int field. 215 * Subexpressions appear in the `next' field; for the binary operators 216 * AND and OR, the left subexpression is first stored in the nv_ptr field. 217 * 218 * For any file marked as needs-count or needs-flag, fixfiles() will 219 * build fi_optf, a `flat list' of the options with nv_int fields that 220 * contain counts or `need' flags; this is used in mkheaders(). 221 */ 222 struct files { 223 struct files *fi_next; /* linked list */ 224 const char *fi_srcfile; /* the name of the "files" file that got us */ 225 u_short fi_srcline; /* and the line number */ 226 u_char fi_flags; /* as below */ 227 char fi_lastc; /* last char from path */ 228 const char *fi_path; /* full file path */ 229 const char *fi_tail; /* name, i.e., strrchr(fi_path, '/') + 1 */ 230 const char *fi_base; /* tail minus ".c" (or whatever) */ 231 struct nvlist *fi_optx;/* options expression */ 232 struct nvlist *fi_optf;/* flattened version of above, if needed */ 233 const char *fi_mkrule; /* special make rule, if any */ 234 }; 235 236 /* 237 * Objects and libraries. This allows precompiled object and library 238 * files (e.g. binary-only device drivers) to be linked in. 239 */ 240 struct objects { 241 struct objects *oi_next;/* linked list */ 242 const char *oi_srcfile; /* the name of the "objects" file that got us */ 243 u_short oi_srcline; /* and the line number */ 244 u_char oi_flags; /* as below */ 245 char oi_lastc; /* last char from path */ 246 const char *oi_path; /* full object path */ 247 struct nvlist *oi_optx;/* options expression */ 248 struct nvlist *oi_optf;/* flattened version of above, if needed */ 249 }; 250 251 #define OI_SEL 0x01 /* selected */ 252 #define OI_NEEDSFLAG 0x02 /* needs-flag */ 253 254 #define FX_ATOM 0 /* atom (in nv_name) */ 255 #define FX_NOT 1 /* NOT expr (subexpression in nv_next) */ 256 #define FX_AND 2 /* AND expr (lhs in nv_ptr, rhs in nv_next) */ 257 #define FX_OR 3 /* OR expr (lhs in nv_ptr, rhs in nv_next) */ 258 259 /* flags */ 260 #define FI_SEL 0x01 /* selected */ 261 #define FI_NEEDSCOUNT 0x02 /* needs-count */ 262 #define FI_NEEDSFLAG 0x04 /* needs-flag */ 263 #define FI_HIDDEN 0x08 /* obscured by other(s), base names overlap */ 264 265 /* 266 * Hash tables look up name=value pairs. The pointer value of the name 267 * is assumed to be constant forever; this can be arranged by interning 268 * the name. (This is fairly convenient since our lexer does this for 269 * all identifier-like strings---it has to save them anyway, lest yacc's 270 * look-ahead wipe out the current one.) 271 */ 272 struct hashtab; 273 274 const char *conffile; /* source file, e.g., "GENERIC.sparc" */ 275 const char *machine; /* machine type, e.g., "sparc" or "sun3" */ 276 const char *machinearch; /* machine arch, e.g., "sparc" or "m68k" */ 277 const char *srcdir; /* path to source directory (rel. to build) */ 278 const char *builddir; /* path to build directory */ 279 const char *defbuilddir; /* default build directory */ 280 int errors; /* counts calls to error() */ 281 int minmaxusers; /* minimum "maxusers" parameter */ 282 int defmaxusers; /* default "maxusers" parameter */ 283 int maxmaxusers; /* default "maxusers" parameter */ 284 int maxusers; /* configuration's "maxusers" parameter */ 285 int maxpartitions; /* configuration's "maxpartitions" parameter */ 286 struct nvlist *options; /* options */ 287 struct nvlist *defoptions; /* "defopt"'d options */ 288 struct nvlist *mkoptions; /* makeoptions */ 289 struct hashtab *devbasetab; /* devbase lookup */ 290 struct hashtab *devatab; /* devbase attachment lookup */ 291 struct hashtab *selecttab; /* selects things that are "optional foo" */ 292 struct hashtab *needcnttab; /* retains names marked "needs-count" */ 293 struct hashtab *opttab; /* table of configured options */ 294 struct hashtab *defopttab; /* options that have been "defopt"'d */ 295 struct devbase *allbases; /* list of all devbase structures */ 296 struct deva *alldevas; /* list of all devbase attachment structures */ 297 struct config *allcf; /* list of configured kernels */ 298 struct devi *alldevi; /* list of all instances */ 299 struct devi *allpseudo; /* list of all pseudo-devices */ 300 int ndevi; /* number of devi's (before packing) */ 301 int npseudo; /* number of pseudo's */ 302 303 struct files *allfiles; /* list of all kernel source files */ 304 struct objects *allobjects; /* list of all kernel object and library files */ 305 306 struct devi **packed; /* arrayified table for packed devi's */ 307 int npacked; /* size of packed table, <= ndevi */ 308 309 struct { /* pv[] table for config */ 310 short *vec; 311 int used; 312 } parents; 313 struct { /* loc[] table for config */ 314 const char **vec; 315 int used; 316 } locators; 317 318 /* files.c */ 319 void initfiles(void); 320 void checkfiles(void); 321 int fixfiles(void); /* finalize */ 322 int fixobjects(void); 323 void addfile(const char *, struct nvlist *, int, const char *); 324 void addobject(const char *, struct nvlist *, int); 325 326 /* hash.c */ 327 struct hashtab *ht_new(void); 328 int ht_insrep(struct hashtab *, const char *, void *, int); 329 int ht_remove(struct hashtab *, const char *); 330 #define ht_insert(ht, nam, val) ht_insrep(ht, nam, val, 0) 331 #define ht_replace(ht, nam, val) ht_insrep(ht, nam, val, 1) 332 void *ht_lookup(struct hashtab *, const char *); 333 void initintern(void); 334 const char *intern(const char *); 335 336 /* main.c */ 337 void addoption(const char *name, const char *value); 338 void removeoption(const char *name); 339 void addmkoption(const char *name, const char *value); 340 void defoption(const char *name); 341 int devbase_has_instances(struct devbase *, int); 342 int deva_has_instances(struct deva *, int); 343 void setupdirs(void); 344 345 /* mkheaders.c */ 346 int mkheaders(void); 347 348 /* mkioconf.c */ 349 int mkioconf(void); 350 351 /* mkmakefile.c */ 352 int mkmakefile(void); 353 354 /* mkswap.c */ 355 int mkswap(void); 356 357 /* pack.c */ 358 void pack(void); 359 360 /* scan.l */ 361 int currentline(void); 362 int firstfile(const char *); 363 int include(const char *, int); 364 365 /* sem.c, other than for yacc actions */ 366 void initsem(void); 367 368 /* util.c */ 369 void *emalloc(size_t); 370 void *erealloc(void *, size_t); 371 char *sourcepath(const char *); 372 void error(const char *, ...); /* immediate errs */ 373 void xerror(const char *, int, const char *, ...); /* delayed errs */ 374 __dead void panic(const char *, ...); 375 struct nvlist *newnv(const char *, const char *, void *, int, struct nvlist *); 376 void nvfree(struct nvlist *); 377 void nvfreel(struct nvlist *); 378 379 int ukc(char *, char *, int, int); 380