usr/src/usr.sbin/amd/fsinfo/fsi_gram.y

/*
 * Copyright (c) 1989 Jan-Simon Pendry
 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)fsi_gram.y  5.3 (Berkeley) 5/12/91
 *
 * $Id: fsi_gram.y,v 5.2.1.3 91/05/07 22:19:02 jsp Alpha $
 *
 */

%{
#include "../fsinfo/fsinfo.h"
#include <stdio.h>

extern qelem *list_of_hosts, *list_of_automounts;
%}

%union {
        auto_tree *a;
        disk_fs *d;
        ether_if *e;
        host *h;
        qelem *q;
        char *s;
        mount *m;
        fsmount *f;
}

%token  tARCH
%token  tAS
%token  tAUTOMOUNT
%token  tCLUSTER
%token  tCONFIG
%token  tDUMPSET
%token  tEQ
%token  tEXPORTFS
%token  tFREQ
%token  tFROM
%token  tFS
%token  tFSTYPE
%token  tHWADDR
%token  tINADDR
%token  tHOST
%token  tLOCALHOST
%token  tLOG
%token  tMOUNT
%token  tNETMASK
%token  tNETIF
%token  tVOLNAME
%token  tOPTS
%token  tOS
%token  tPASSNO
%token  tSEL
%token  <s> tSTR

%start list_of_hosts

%type <a> automount
%type <q> automount_tree
%type <e> ether_attr
%type <m> dir_tree_info
%type <d> filesystem fs_info_list
%type <h> host host_attr host_attr_list
%type <q> list_of_hosts list_of_filesystems list_of_mounts dir_tree
%type <f> localinfo_list
%type <s> opt_auto_opts

%%

list_of_hosts :
          /* empty */
          { $$ = new_que(); }

        | list_of_hosts host
          { if ($2) ins_que((qelem *) $2, list_of_hosts->q_back);
            $$ = $1; }

        | list_of_hosts automount
          { if ($2) ins_que((qelem *) $2, list_of_automounts->q_back);
            $$ = $1; }
        ;

/*
 * A new host:
 *
 * host foo.domain
 */
host :
          tHOST host_attr list_of_filesystems list_of_mounts
          { $$ = $2; $$->h_disk_fs = $3; $$->h_mount = $4; }

        | error tHOST host_attr list_of_filesystems list_of_mounts
          { $$ = $3; $$->h_disk_fs = $4; $$->h_mount = $5; }

        ;

host_attr :
          tSTR
          { $$ = new_host(); set_host($$, HF_HOST, $1); }

        | '{' host_attr_list '}' tSTR
          { $$ = $2; set_host($$, HF_HOST, $4); }

        ;

host_attr_list :
          /* empty */
          { $$ = new_host(); }

        | host_attr_list tNETIF tSTR '{' ether_attr '}'
          { if ($5) {
                $5->e_if = $3;
                $$ = $1; set_host($$, HF_ETHER, $5); }
          }

        | host_attr_list tCONFIG tSTR
          { $$ = $1; set_host($$, HF_CONFIG, $3); }

        | host_attr_list tARCH '=' tSTR
          { $$ = $1; set_host($$, HF_ARCH, $4); }

        | host_attr_list tOS '=' tSTR
          { $$ = $1; set_host($$, HF_OS, $4); }

        | host_attr_list tCLUSTER '=' tSTR
          { $$ = $1; set_host($$, HF_CLUSTER, $4); }

        | host_attr_list error '=' tSTR
          { yyerror("unknown host attribute"); }
        ;

ether_attr :
          /* empty */
          { $$ = new_ether_if(); }

        | ether_attr tINADDR '=' tSTR
          { $$ = $1; set_ether_if($$, EF_INADDR, $4); }
        | ether_attr tNETMASK '=' tSTR
          { $$ = $1; set_ether_if($$, EF_NETMASK, $4); }
        | ether_attr tHWADDR '=' tSTR
          { $$ = $1; set_ether_if($$, EF_HWADDR, $4); }
        ;

/*
 * A new automount tree:
 *
 * automount /mountpoint { ... }
 */
automount :
          tAUTOMOUNT opt_auto_opts automount_tree
          { if ($3) {
                $$ = new_auto_tree($2, $3);
            } else {
                $$ = 0;
            }
          }

        | tAUTOMOUNT error
          { $$ = 0; }
        ;

opt_auto_opts :
          /* empty */
          { $$ = strdup(""); }

        | tOPTS tSTR
          { $$ = $2; }
        ;

list_of_filesystems :
          /* empty */
          { $$ = 0; }

        | list_of_filesystems filesystem
          { if ($2) {
                if ($1)
                        $$ = $1;
                else
                        $$ = new_que();
                ins_que(&$2->d_q, $$->q_back);
            } else {
                $$ = $1;
            }
          }
        ;

/*
 * A new filesystem:
 *
 * fs /dev/whatever { ... }
 */
filesystem :
          tFS tSTR '{' fs_info_list '}'
          { $4->d_dev = $2; $$ = $4; }

        | tFS error '}'
          { $$ = (disk_fs *) 0; }
        ;

/*
 * Per-filesystem information:
 *
 * fstype - the type of the filesystem (4.2, nfs, swap, export)
 * opts - the mount options ("rw,grpid")
 * passno - fsck pass number
 * freq - dump frequency
 * dumpset - tape set for filesystem dumps
 * mount - where to mount this filesystem
 * log - log device
 */
fs_info_list :
          /* empty */
          { $$ = new_disk_fs(); }

        | fs_info_list tFSTYPE '=' tSTR
          { $$ = $1; set_disk_fs($$, DF_FSTYPE, $4); }

        | fs_info_list tOPTS '=' tSTR
          { $$ = $1; set_disk_fs($$, DF_OPTS, $4); }

        | fs_info_list tPASSNO '=' tSTR
          { $$ = $1; set_disk_fs($$, DF_PASSNO, $4); }

        | fs_info_list tFREQ '=' tSTR
          { $$ = $1; set_disk_fs($$, DF_FREQ, $4); }

        | fs_info_list tMOUNT dir_tree
          { $$ = $1; set_disk_fs($$, DF_MOUNT, (char *) $3); }

        | fs_info_list tDUMPSET '=' tSTR
          { $$ = $1; set_disk_fs($$, DF_DUMPSET, $4); }

        | fs_info_list tLOG '=' tSTR
          { $$ = $1; set_disk_fs($$, DF_LOG, $4); }

        | fs_info_list error '=' tSTR
          { yyerror("unknown filesystem attribute"); }
        ;

/*
 * An automount tree:
 *
 * name = "volname"     name is a reference to volname
 * name -> "string"     name is a link to "string"
 * name { ... }         name is an automount tree
 */
automount_tree :
          /* empty */
          { $$ = 0; }

        | automount_tree tSTR '=' tSTR
          { automount *a = new_automount($2);
            a->a_volname = $4;
            if ($1)
                $$ = $1;
            else
                $$ = new_que();
            ins_que(&a->a_q, $$->q_back);
          }

        | automount_tree tSTR tEQ tSTR
          { automount *a = new_automount($2);
            a->a_symlink = $4;
            if ($1)
                $$ = $1;
            else
                $$ = new_que();
            ins_que(&a->a_q, $$->q_back);
          }

        | automount_tree tSTR '{' automount_tree '}'
          { automount *a = new_automount($2);
            a->a_mount = $4;
            if ($1)
                $$ = $1;
            else
                $$ = new_que();
            ins_que(&a->a_q, $$->q_back);
          }
        ;

dir_tree :
          /* empty */
          { $$ = 0; }

        | dir_tree tSTR '{' dir_tree_info dir_tree '}'
          { $4->m_mount = $5;
            $4->m_name = $2;
            if ($2[0] != '/' && $2[1] && strchr($2+1, '/'))
                yyerror("not allowed '/' in a directory name");
            if ($1)
                $$ = $1;
            else
                $$ = new_que();
            ins_que(&$4->m_q, $$->q_back);
          }
        ;

dir_tree_info :
          /* empty */
          { $$ = new_mount(); }

        | dir_tree_info tEXPORTFS tSTR
          { $$ = $1; set_mount($$, DM_EXPORTFS, $3); }

        | dir_tree_info tVOLNAME tSTR
          { $$ = $1; set_mount($$, DM_VOLNAME, $3); }

        | dir_tree_info tSEL tSTR
          { $$ = $1; set_mount($$, DM_SEL, $3); }

        | dir_tree_info error '=' tSTR
          { yyerror("unknown directory attribute"); }
        ;

/*
 * Additional mounts on a host
 *
 * mount "volname" ...
 */
list_of_mounts :
          /* empty */
          { $$ = 0; }

        | list_of_mounts tMOUNT tSTR localinfo_list
          { set_fsmount($4, FM_VOLNAME, $3);
            if ($1)
                $$ = $1;
            else
                $$ = new_que();
            ins_que(&$4->f_q, $$->q_back);
            }
        ;

/*
 * Mount info:
 *
 * from "hostname"      - obtain the object from the named host
 * as "string"          - where to mount, if different from the volname
 * opts "string"        - mount options
 * fstype "type"        - type of filesystem mount, if not nfs
 */
localinfo_list :
          /* empty */
          { $$ = new_fsmount(); }

        | localinfo_list tAS tSTR
          { $$ = $1; set_fsmount($$, FM_LOCALNAME, $3); }

        | localinfo_list tFROM tSTR
          { $$ = $1; set_fsmount($$, FM_FROM, $3); }

        | localinfo_list tFSTYPE tSTR
          { $$ = $1; set_fsmount($$, FM_FSTYPE, $3); }

        | localinfo_list tOPTS tSTR
          { $$ = $1; set_fsmount($$, FM_OPTS, $3); }

        | localinfo_list error '=' tSTR
          { yyerror("unknown mount attribute"); }
        ;