282 lines
11 KiB
C
282 lines
11 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratories.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)config.h 8.1 (Berkeley) 6/6/93
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*/
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/*
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* Name/value lists. Values can be strings or pointers and/or can carry
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* integers. The names can be NULL, resulting in simple value lists.
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*/
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struct nvlist {
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struct nvlist *nv_next;
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const char *nv_name;
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union {
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const char *un_str;
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void *un_ptr;
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} nv_un;
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#define nv_str nv_un.un_str
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#define nv_ptr nv_un.un_ptr
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int nv_int;
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};
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/*
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* Kernel configurations.
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*/
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struct config {
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struct config *cf_next; /* linked list */
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const char *cf_name; /* "kernel" */
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int cf_lineno; /* source line */
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struct nvlist *cf_root; /* "root on ra0a" */
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struct nvlist *cf_swap; /* "swap on ra0b and ra1b" */
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struct nvlist *cf_dump; /* "dumps on ra0b" */
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};
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/*
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* Attributes. These come in two flavors: "plain" and "interface".
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* Plain attributes (e.g., "ether") simply serve to pull in files.
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* Interface attributes (e.g., "scsi") carry three lists: locators,
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* child devices, and references. The locators are those things
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* that must be specified in order to configure a device instance
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* using this attribute (e.g., "tg0 at scsi0"). The a_devs field
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* lists child devices that can connect here (e.g., "tg"s), while
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* the a_refs are parents that carry the attribute (e.g., actual
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* SCSI host adapter drivers such as the SPARC "esp").
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*/
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struct attr {
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const char *a_name; /* name of this attribute */
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int a_iattr; /* true => allows children */
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struct nvlist *a_locs; /* locators required */
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int a_loclen; /* length of above list */
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struct nvlist *a_devs; /* children */
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struct nvlist *a_refs; /* parents */
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};
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/*
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* The "base" part of a device ("uba", "sd"; but not "uba2" or
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* "sd0"). It may be found "at" one or more attributes, including
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* "at root" (this is represented by a NULL attribute).
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*
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* Each device may also export attributes. If any provide an output
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* interface (e.g., "esp" provides "scsi"), other devices (e.g.,
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* "tg"s) can be found at instances of this one (e.g., "esp"s).
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* Such a connection must provide locators as specified by that
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* interface attribute (e.g., "target").
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*
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* Each base carries a list of instances (via d_ihead). Note that this
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* list "skips over" aliases; those must be found through the instances
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* themselves.
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*/
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struct devbase {
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const char *d_name; /* e.g., "sd" */
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struct devbase *d_next; /* linked list */
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int d_isdef; /* set once properly defined */
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int d_ispseudo; /* is a pseudo-device */
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int d_major; /* used for "root on sd0", e.g. */
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struct nvlist *d_atlist; /* e.g., "at tg" (attr list) */
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struct nvlist *d_vectors; /* interrupt vectors, if any */
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struct nvlist *d_attrs; /* attributes, if any */
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struct devi *d_ihead; /* first instance, if any */
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struct devi **d_ipp; /* used for tacking on more instances */
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int d_umax; /* highest unit number + 1 */
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};
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/*
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* An "instance" of a device. The same instance may be listed more
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* than once, e.g., "xx0 at isa? port FOO" + "xx0 at isa? port BAR".
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*
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* After everything has been read in and verified, the devi's are
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* "packed" to collect all the information needed to generate ioconf.c.
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* In particular, we try to collapse multiple aliases into a single entry.
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* We then assign each "primary" (non-collapsed) instance a cfdata index.
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* Note that there may still be aliases among these.
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*/
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struct devi {
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/* created while parsing config file */
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const char *i_name; /* e.g., "sd0" */
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int i_unit; /* unit from name, e.g., 0 */
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struct devbase *i_base;/* e.g., pointer to "sd" base */
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struct devi *i_next; /* list of all instances */
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struct devi *i_bsame; /* list on same base */
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struct devi *i_alias; /* other aliases of this instance */
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const char *i_at; /* where this is "at" (NULL if at root) */
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struct attr *i_atattr; /* attr that allowed attach */
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struct devbase *i_atdev;/* dev if "at <devname><unit>", else NULL */
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const char **i_locs; /* locators (as given by i_atattr) */
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int i_atunit; /* unit from "at" */
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int i_cfflags; /* flags from config line */
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int i_lineno; /* line # in config, for later errors */
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/* created during packing or ioconf.c generation */
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/* i_loclen via i_atattr->a_loclen */
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short i_collapsed; /* set => this alias no longer needed */
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short i_cfindex; /* our index in cfdata */
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short i_pvlen; /* number of parents */
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short i_pvoff; /* offset in parents.vec */
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short i_locoff; /* offset in locators.vec */
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short i_ivoff; /* offset in interrupt vectors, if any */
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struct devi **i_parents;/* the parents themselves */
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};
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/* special units */
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#define STAR (-1) /* unit number for, e.g., "sd*" */
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#define WILD (-2) /* unit number for, e.g., "sd?" */
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/*
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* Files. Each file is either standard (always included) or optional,
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* depending on whether it has names on which to *be* optional.
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*/
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struct files {
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struct files *fi_next; /* linked list */
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const char *fi_srcfile; /* the name of the "files" file that got us */
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u_short fi_srcline; /* and the line number */
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u_char fi_flags; /* as below */
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char fi_lastc; /* last char from path */
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const char *fi_path; /* full file path */
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const char *fi_tail; /* name, i.e., rindex(fi_path, '/') + 1 */
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const char *fi_base; /* tail minus ".c" (or whatever) */
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struct nvlist *fi_opt; /* optional on ... */
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const char *fi_mkrule; /* special make rule, if any */
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};
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/* flags */
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#define FI_SEL 0x01 /* selected */
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#define FI_CONFIGDEP 0x02 /* config-dependent */
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#define FI_DRIVER 0x04 /* device-driver */
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#define FI_NEEDSCOUNT 0x08 /* needs-count */
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#define FI_NEEDSFLAG 0x10 /* needs-flag */
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#define FI_HIDDEN 0x20 /* obscured by other(s), base names overlap */
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/*
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* Hash tables look up name=value pairs. The pointer value of the name
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* is assumed to be constant forever; this can be arranged by interning
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* the name. (This is fairly convenient since our lexer does this for
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* all identifier-like strings---it has to save them anyway, lest yacc's
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* look-ahead wipe out the current one.)
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*/
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struct hashtab;
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const char *conffile; /* source file, e.g., "GENERIC.sparc" */
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const char *confdirbase; /* basename of compile directory, usu. same */
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const char *machine; /* machine type, e.g., "sparc" */
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int errors; /* counts calls to error() */
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int minmaxusers; /* minimum "maxusers" parameter */
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int defmaxusers; /* default "maxusers" parameter */
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int maxmaxusers; /* default "maxusers" parameter */
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int maxusers; /* configuration's "maxusers" parameter */
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struct nvlist *options; /* options */
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struct nvlist *mkoptions; /* makeoptions */
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struct hashtab *devbasetab; /* devbase lookup */
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struct hashtab *selecttab; /* selects things that are "optional foo" */
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struct hashtab *needcnttab; /* retains names marked "needs-count" */
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struct devbase *allbases; /* list of all devbase structures */
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struct config *allcf; /* list of configured kernels */
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struct devi *alldevi; /* list of all instances */
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struct devi *allpseudo; /* list of all pseudo-devices */
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int ndevi; /* number of devi's (before packing) */
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int npseudo; /* number of pseudo's */
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struct files *allfiles; /* list of all kernel source files */
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struct devi **packed; /* arrayified table for packed devi's */
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int npacked; /* size of packed table, <= ndevi */
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struct { /* pv[] table for config */
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short *vec;
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int used;
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} parents;
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struct { /* loc[] table for config */
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const char **vec;
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int used;
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} locators;
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/* files.c */
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void initfiles __P((void));
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void checkfiles __P((void));
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int fixfiles __P((void)); /* finalize */
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void addfile __P((const char *, struct nvlist *, int, const char *));
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/* hash.c */
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struct hashtab *ht_new __P((void));
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int ht_insrep __P((struct hashtab *, const char *, void *, int));
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#define ht_insert(ht, nam, val) ht_insrep(ht, nam, val, 0)
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#define ht_replace(ht, nam, val) ht_insrep(ht, nam, val, 1)
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void *ht_lookup __P((struct hashtab *, const char *));
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void initintern __P((void));
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const char *intern __P((const char *));
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/* main.c */
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void addoption __P((const char *name, const char *value));
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void addmkoption __P((const char *name, const char *value));
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/* mkheaders.c */
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int mkheaders __P((void));
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/* mkioconf.c */
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int mkioconf __P((void));
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/* mkmakefile.c */
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int mkmakefile __P((void));
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/* mkswap.c */
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int mkswap __P((void));
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/* pack.c */
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void pack __P((void));
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/* scan.l */
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int currentline __P((void));
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/* sem.c, other than for yacc actions */
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void initsem __P((void));
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/* util.c */
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void *emalloc __P((size_t));
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void *erealloc __P((void *, size_t));
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char *path __P((const char *));
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void error __P((const char *, ...)); /* immediate errs */
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void xerror __P((const char *, int, const char *, ...)); /* delayed errs */
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__dead void panic __P((const char *, ...));
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struct nvlist *newnv __P((const char *, const char *, void *, int));
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void nvfree __P((struct nvlist *));
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void nvfreel __P((struct nvlist *));
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