1 /* $OpenBSD: config.h,v 1.32 2021/11/28 19:26:03 deraadt 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 50 #include <paths.h> 51 #include <stdlib.h> 52 #include <unistd.h> 53 54 /* These are really for MAKE_BOOTSTRAP but harmless. */ 55 #ifndef __dead 56 #define __dead 57 #endif 58 #ifndef _PATH_DEVNULL 59 #define _PATH_DEVNULL "/dev/null" 60 #endif 61 62 63 /* 64 * Name/value lists. Values can be strings or pointers and/or can carry 65 * integers. The names can be NULL, resulting in simple value lists. 66 */ 67 struct nvlist { 68 struct nvlist *nv_next; 69 const char *nv_name; 70 union { 71 const char *un_str; 72 void *un_ptr; 73 } nv_un; 74 #define nv_str nv_un.un_str 75 #define nv_ptr nv_un.un_ptr 76 int nv_int; 77 }; 78 79 /* 80 * Kernel configurations. 81 */ 82 struct config { 83 struct config *cf_next; /* linked list */ 84 const char *cf_name; /* "vmunix" */ 85 int cf_lineno; /* source line */ 86 struct nvlist *cf_root; /* "root on ra0a" */ 87 struct nvlist *cf_swap; /* "swap on ra0b and ra1b" */ 88 struct nvlist *cf_dump; /* "dumps on ra0b" */ 89 }; 90 91 /* 92 * Attributes. These come in two flavors: "plain" and "interface". 93 * Plain attributes (e.g., "ether") simply serve to pull in files. 94 * Interface attributes (e.g., "scsi") carry three lists: locators, 95 * child devices, and references. The locators are those things 96 * that must be specified in order to configure a device instance 97 * using this attribute (e.g., "tg0 at scsi0"). The a_devs field 98 * lists child devices that can connect here (e.g., "tg"s), while 99 * the a_refs are parents that carry the attribute (e.g., actual 100 * SCSI host adapter drivers such as the SPARC "esp"). 101 */ 102 struct attr { 103 const char *a_name; /* name of this attribute */ 104 int a_iattr; /* true => allows children */ 105 struct nvlist *a_locs; /* locators required */ 106 int a_loclen; /* length of above list */ 107 struct nvlist *a_devs; /* children */ 108 struct nvlist *a_refs; /* parents */ 109 }; 110 111 /* 112 * The "base" part (struct devbase) of a device ("uba", "sd"; but not 113 * "uba2" or "sd0"). It may be found "at" one or more attributes, 114 * including "at root" (this is represented by a NULL attribute), as 115 * specified by the device attachments (struct deva). 116 * 117 * Each device may also export attributes. If any provide an output 118 * interface (e.g., "esp" provides "scsi"), other devices (e.g., 119 * "tg"s) can be found at instances of this one (e.g., "esp"s). 120 * Such a connection must provide locators as specified by that 121 * interface attribute (e.g., "target"). The base device can 122 * export both output (aka `interface') attributes, as well as 123 * import input (`plain') attributes. Device attachments may 124 * only import input attributes; it makes no sense to have a 125 * specific attachment export a new interface to other devices. 126 * 127 * Each base carries a list of instances (via d_ihead). Note that this 128 * list "skips over" aliases; those must be found through the instances 129 * themselves. Each base also carries a list of possible attachments, 130 * each of which specify a set of devices that the device can attach 131 * to, as well as the device instances that are actually using that 132 * attachment. 133 */ 134 struct devbase { 135 const char *d_name; /* e.g., "sd" */ 136 struct devbase *d_next; /* linked list */ 137 int d_isdef; /* set once properly defined */ 138 int d_ispseudo; /* is a pseudo-device */ 139 int d_major; /* used for "root on sd0", e.g. */ 140 struct nvlist *d_attrs; /* attributes, if any */ 141 int d_umax; /* highest unit number + 1 */ 142 struct devi *d_ihead; /* first instance, if any */ 143 struct devi **d_ipp; /* used for tacking on more instances */ 144 struct deva *d_ahead; /* first attachment, if any */ 145 struct deva **d_app; /* used for tacking on attachments */ 146 }; 147 148 struct deva { 149 const char *d_name; /* name of attachment, e.g. "com_isa" */ 150 struct deva *d_next; /* linked list */ 151 struct deva *d_bsame; /* list on same base */ 152 int d_isdef; /* set once properly defined */ 153 struct devbase *d_devbase; /* the base device */ 154 struct nvlist *d_atlist; /* e.g., "at tg" (attr list) */ 155 struct nvlist *d_attrs; /* attributes, if any */ 156 struct devi *d_ihead; /* first instance, if any */ 157 struct devi **d_ipp; /* used for tacking on more instances */ 158 }; 159 160 /* 161 * An "instance" of a device. The same instance may be listed more 162 * than once, e.g., "xx0 at isa? port FOO" + "xx0 at isa? port BAR". 163 * 164 * After everything has been read in and verified, the devi's are 165 * "packed" to collect all the information needed to generate ioconf.c. 166 * In particular, we try to collapse multiple aliases into a single entry. 167 * We then assign each "primary" (non-collapsed) instance a cfdata index. 168 * Note that there may still be aliases among these. 169 */ 170 struct devi { 171 /* created while parsing config file */ 172 const char *i_name; /* e.g., "sd0" */ 173 int i_unit; /* unit from name, e.g., 0 */ 174 int i_disable; /* device is disabled */ 175 struct devbase *i_base;/* e.g., pointer to "sd" base */ 176 struct devi *i_next; /* list of all instances */ 177 struct devi *i_bsame; /* list on same base */ 178 struct devi *i_asame; /* list on same base attachment */ 179 struct devi *i_alias; /* other aliases of this instance */ 180 const char *i_at; /* where this is "at" (NULL if at root) */ 181 struct attr *i_atattr; /* attr that allowed attach */ 182 struct devbase *i_atdev;/* if "at <devname><unit>", else NULL */ 183 struct deva *i_atdeva; 184 const char **i_locs; /* locators (as given by i_atattr) */ 185 int i_atunit; /* unit from "at" */ 186 int i_cfflags; /* flags from config line */ 187 int i_lineno; /* line # in config, for later errors */ 188 189 /* created during packing or ioconf.c generation */ 190 /* i_loclen via i_atattr->a_loclen */ 191 short i_collapsed; /* set => this alias no longer needed */ 192 short i_cfindex; /* our index in cfdata */ 193 short i_pvlen; /* number of parents */ 194 short i_pvoff; /* offset in parents.vec */ 195 short i_locoff; /* offset in locators.vec */ 196 struct devi **i_parents;/* the parents themselves */ 197 int i_locnami; /* my index into locnami[] */ 198 int i_plocnami; /* parent's locnami[] index */ 199 }; 200 /* special units */ 201 #define STAR (-1) /* unit number for, e.g., "sd*" */ 202 #define WILD (-2) /* unit number for, e.g., "sd?" */ 203 204 /* 205 * Files. Each file is either standard (always included) or optional, 206 * depending on whether it has names on which to *be* optional. The 207 * options field (fi_optx) is actually an expression tree, with nodes 208 * for OR, AND, and NOT, as well as atoms (words) representing some 209 * particular option. The node type is stored in the nv_int field. 210 * Subexpressions appear in the `next' field; for the binary operators 211 * AND and OR, the left subexpression is first stored in the nv_ptr field. 212 * 213 * For any file marked as needs-count or needs-flag, fixfiles() will 214 * build fi_optf, a `flat list' of the options with nv_int fields that 215 * contain counts or `need' flags; this is used in mkheaders(). 216 */ 217 struct files { 218 struct files *fi_next; /* linked list */ 219 const char *fi_srcfile; /* the name of the "files" file that got us */ 220 u_short fi_srcline; /* and the line number */ 221 u_char fi_flags; /* as below */ 222 char fi_lastc; /* last char from path */ 223 struct nvlist *fi_nvpath; /* list of paths */ 224 const char *fi_base; /* tail minus ".c" (or whatever) */ 225 struct nvlist *fi_optx;/* options expression */ 226 struct nvlist *fi_optf;/* flattened version of above, if needed */ 227 const char *fi_mkrule;/* special make rules, if any */ 228 }; 229 230 /* 231 * Objects and libraries. This allows precompiled object and library 232 * files (e.g. binary-only device drivers) to be linked in. 233 */ 234 struct objects { 235 struct objects *oi_next;/* linked list */ 236 const char *oi_srcfile; /* the name of the "objects" file that got us */ 237 u_short oi_srcline; /* and the line number */ 238 u_char oi_flags; /* as below */ 239 char oi_lastc; /* last char from path */ 240 const char *oi_path; /* full object path */ 241 struct nvlist *oi_optx;/* options expression */ 242 struct nvlist *oi_optf;/* flattened version of above, if needed */ 243 }; 244 245 #define OI_SEL 0x01 /* selected */ 246 #define OI_NEEDSFLAG 0x02 /* needs-flag */ 247 248 #define FX_ATOM 0 /* atom (in nv_name) */ 249 #define FX_NOT 1 /* NOT expr (subexpression in nv_next) */ 250 #define FX_AND 2 /* AND expr (lhs in nv_ptr, rhs in nv_next) */ 251 #define FX_OR 3 /* OR expr (lhs in nv_ptr, rhs in nv_next) */ 252 253 /* flags */ 254 #define FI_SEL 0x01 /* selected */ 255 #define FI_NEEDSCOUNT 0x02 /* needs-count */ 256 #define FI_NEEDSFLAG 0x04 /* needs-flag */ 257 #define FI_HIDDEN 0x08 /* obscured by other(s), base names overlap */ 258 259 /* 260 * Hash tables look up name=value pairs. The pointer value of the name 261 * is assumed to be constant forever; this can be arranged by interning 262 * the name. (This is fairly convenient since our lexer does this for 263 * all identifier-like strings---it has to save them anyway, lest yacc's 264 * look-ahead wipe out the current one.) 265 */ 266 struct hashtab; 267 268 extern const char *conffile; /* source file, e.g., "GENERIC.sparc" */ 269 extern const char *last_component; 270 extern const char *machine; /* machine type, e.g., "sparc" or "sun3" */ 271 extern const char *machinearch; /* machine arch, e.g., "sparc" or "m68k" */ 272 extern const char *srcdir; /* path to source directory (rel. to build) */ 273 extern const char *builddir; /* path to build directory */ 274 extern const char *defbuilddir; /* default build directory */ 275 extern int errors; /* counts calls to error() */ 276 extern int minmaxusers; /* minimum "maxusers" parameter */ 277 extern int defmaxusers; /* default "maxusers" parameter */ 278 extern int maxmaxusers; /* default "maxusers" parameter */ 279 extern int maxusers; /* configuration's "maxusers" parameter */ 280 extern int maxpartitions; /* configuration's "maxpartitions" parameter */ 281 extern struct nvlist *options; /* options */ 282 extern struct nvlist *defoptions; /* "defopt"'d options */ 283 extern struct nvlist *mkoptions; /* makeoptions */ 284 extern struct hashtab *devbasetab; /* devbase lookup */ 285 extern struct hashtab *devatab; /* devbase attachment lookup */ 286 extern struct hashtab *selecttab; /* selects things that are "optional foo" */ 287 extern struct hashtab *needcnttab; /* retains names marked "needs-count" */ 288 extern struct hashtab *opttab; /* table of configured options */ 289 extern struct hashtab *defopttab; /* options that have been "defopt"'d */ 290 extern struct devbase *allbases; /* list of all devbase structures */ 291 extern struct deva *alldevas; /* list of all devbase attachment structures */ 292 extern struct config *allcf; /* list of configured kernels */ 293 extern struct devi *alldevi; /* list of all instances */ 294 extern struct devi *allpseudo; /* list of all pseudo-devices */ 295 extern int ndevi; /* number of devi's (before packing) */ 296 extern int npseudo; /* number of pseudo's */ 297 298 extern struct files *allfiles; /* list of all kernel source files */ 299 extern struct objects *allobjects; /* list of all kernel object and library files */ 300 301 extern struct devi **packed; /* arrayified table for packed devi's */ 302 extern int npacked; /* size of packed table, <= ndevi */ 303 304 struct parents { /* pv[] table for config */ 305 short *vec; 306 int used; 307 }; 308 extern struct parents parents; 309 struct locators { /* loc[] table for config */ 310 const char **vec; 311 int used; 312 }; 313 extern struct locators locators; 314 315 /* files.c */ 316 void initfiles(void); 317 void checkfiles(void); 318 int fixfiles(void); /* finalize */ 319 int fixobjects(void); 320 void addfile(struct nvlist *, struct nvlist *, int, const char *); 321 void addobject(const char *, struct nvlist *, int); 322 323 /* hash.c */ 324 struct hashtab *ht_new(void); 325 int ht_insrep(struct hashtab *, const char *, void *, int); 326 int ht_remove(struct hashtab *, const char *); 327 #define ht_insert(ht, nam, val) ht_insrep(ht, nam, val, 0) 328 #define ht_replace(ht, nam, val) ht_insrep(ht, nam, val, 1) 329 void *ht_lookup(struct hashtab *, const char *); 330 void initintern(void); 331 const char *intern(const char *); 332 333 /* main.c */ 334 void addoption(const char *name, const char *value); 335 void removeoption(const char *name); 336 void addmkoption(const char *name, const char *value); 337 void defoption(const char *name); 338 int devbase_has_instances(struct devbase *, int); 339 int deva_has_instances(struct deva *, int); 340 void setupdirs(void); 341 extern int pflag; 342 extern char *sflag; 343 extern char *bflag; 344 extern char *startdir; 345 346 /* mkheaders.c */ 347 int mkheaders(void); 348 349 /* mkioconf.c */ 350 int mkioconf(void); 351 352 /* mkmakefile.c */ 353 int mkmakefile(void); 354 355 /* mkswap.c */ 356 extern dev_t nodev; 357 int mkswap(void); 358 359 /* pack.c */ 360 void pack(void); 361 362 /* scan.l */ 363 int currentline(void); 364 int firstfile(const char *); 365 int include(const char *, int); 366 367 /* sem.c, other than for yacc actions */ 368 void initsem(void); 369 370 /* util.c */ 371 void *emalloc(size_t); 372 void *ereallocarray(void *, size_t, size_t); 373 void *ecalloc(size_t, size_t); 374 char *sourcepath(const char *); 375 void error(const char *, ...) /* immediate errs */ 376 __attribute__((__format__ (printf, 1, 2))); 377 void xerror(const char *, int, const char *, ...) /* delayed errs */ 378 __attribute__((__format__ (printf, 3, 4))); 379 __dead void panic(const char *, ...) 380 __attribute__((__format__ (printf, 1, 2))); 381 struct nvlist *newnv(const char *, const char *, void *, int, struct nvlist *); 382 void nvfree(struct nvlist *); 383 void nvfreel(struct nvlist *); 384 385 int ukc(char *, char *, int, int); 386