fsi_gram.y revision 131702 
1/*
2 * Copyright (c) 1997-2004 Erez Zadok
3 * Copyright (c) 1989 Jan-Simon Pendry
4 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1989 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgment:
21 *      This product includes software developed by the University of
22 *      California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 *	%W% (Berkeley) %G%
40 *
41 * $Id: fsi_gram.y,v 1.4.2.4 2004/01/06 03:15:23 ezk Exp $
42 *
43 */
44
45%{
46#ifdef HAVE_CONFIG_H
47# include <config.h>
48#endif /* HAVE_CONFIG_H */
49#include <am_defs.h>
50#include <fsi_data.h>
51#include <fsinfo.h>
52
53/* AIX requires this to be the first thing in the file. */
54#ifndef __GNUC__
55# if HAVE_ALLOCA_H
56#  include <alloca.h>
57# else /* not HAVE_ALLOCA_H */
58#  ifdef _AIX
59#pragma alloca
60#  else /* not _AIX */
61#   ifndef alloca
62  /* predefined by HP cc +Olibcalls */
63voidp alloca();
64#   endif /* not alloca */
65#  endif /* not _AIX */
66# endif /* not HAVE_ALLOCA_H */
67#endif /* not __GNUC__ */
68
69extern qelem *list_of_hosts, *list_of_automounts;
70%}
71
72%union {
73	auto_tree *a;
74	disk_fs *d;
75	ether_if *e;
76	host *h;
77	qelem *q;
78	char *s;
79	fsi_mount *m;
80	fsmount *f;
81}
82
83%token	tARCH
84%token	tAS
85%token	tAUTOMOUNT
86%token	tCLUSTER
87%token	tCONFIG
88%token	tDUMPSET
89%token	tEQ
90%token  tNFSEQ
91%token	tEXPORTFS
92%token	tFREQ
93%token	tFROM
94%token	tFS
95%token	tFSTYPE
96%token	tHWADDR
97%token	tINADDR
98%token	tHOST
99%token	tLOCALHOST
100%token	tLOG
101%token	tMOUNT
102%token	tNETMASK
103%token	tNETIF
104%token	tVOLNAME
105%token	tOPTS
106%token	tOS
107%token	tPASSNO
108%token        tDIRECT
109%token	tSEL
110%token	<s> tSTR
111
112%start list_of_hosts
113
114%type <a> automount
115%type <q> automount_tree
116%type <e> ether_attr
117%type <m> dir_tree_info
118%type <d> filesystem fs_info_list
119%type <h> host host_attr host_attr_list
120%type <q> list_of_hosts list_of_filesystems list_of_mounts dir_tree
121%type <f> localinfo_list
122%type <s> opt_auto_opts
123
124%%
125
126list_of_hosts :
127	  /* empty */
128	  { $$ = new_que(); }
129
130	| list_of_hosts host
131	  { if ($2) ins_que((qelem *) $2, list_of_hosts->q_back);
132	    $$ = $1; }
133
134	| list_of_hosts automount
135	  { if ($2) ins_que((qelem *) $2, list_of_automounts->q_back);
136	    $$ = $1; }
137	;
138
139/*
140 * A new host:
141 *
142 * host foo.domain
143 */
144host :
145	  tHOST host_attr list_of_filesystems list_of_mounts
146	  { $$ = $2; $$->h_disk_fs = $3; $$->h_mount = $4; }
147
148	| error tHOST host_attr list_of_filesystems list_of_mounts
149	  { $$ = $3; $$->h_disk_fs = $4; $$->h_mount = $5; }
150
151	;
152
153host_attr :
154	  tSTR
155	  { $$ = new_host(); set_host($$, HF_HOST, $1); }
156
157	| '{' host_attr_list '}' tSTR
158	  { $$ = $2; set_host($$, HF_HOST, $4); }
159
160	;
161
162host_attr_list :
163	  /* empty */
164	  { $$ = new_host(); }
165
166	| host_attr_list tNETIF tSTR '{' ether_attr '}'
167	  { if ($5) {
168		$5->e_if = $3;
169		$$ = $1; set_host($$, HF_ETHER, (char *) $5); }
170	  }
171
172	| host_attr_list tCONFIG tSTR
173	  { $$ = $1; set_host($$, HF_CONFIG, $3); }
174
175	| host_attr_list tARCH '=' tSTR
176	  { $$ = $1; set_host($$, HF_ARCH, $4); }
177
178	| host_attr_list tOS '=' tSTR
179	  { $$ = $1; set_host($$, HF_OS, $4); }
180
181	| host_attr_list tCLUSTER '=' tSTR
182	  { $$ = $1; set_host($$, HF_CLUSTER, $4); }
183
184	| host_attr_list error '=' tSTR
185	  { yyerror("unknown host attribute"); }
186	;
187
188ether_attr :
189	  /* empty */
190	  { $$ = new_ether_if(); }
191
192	| ether_attr tINADDR '=' tSTR
193	  { $$ = $1; set_ether_if($$, EF_INADDR, $4); }
194	| ether_attr tNETMASK '=' tSTR
195	  { $$ = $1; set_ether_if($$, EF_NETMASK, $4); }
196	| ether_attr tHWADDR '=' tSTR
197	  { $$ = $1; set_ether_if($$, EF_HWADDR, $4); }
198	;
199
200/*
201 * A new automount tree:
202 *
203 * automount /mountpoint { ... }
204 */
205automount :
206	  tAUTOMOUNT opt_auto_opts automount_tree
207	  { if ($3) {
208		$$ = new_auto_tree($2, $3);
209	    } else {
210		$$ = 0;
211	    }
212	  }
213
214	| tAUTOMOUNT error
215	  { $$ = 0; }
216	;
217
218opt_auto_opts :
219	  /* empty */
220	  { $$ = strdup(""); }
221
222	| tOPTS tSTR
223	  { $$ = $2; }
224	;
225
226list_of_filesystems :
227	  /* empty */
228	  { $$ = 0; }
229
230	| list_of_filesystems filesystem
231	  { if ($2) {
232		if ($1)
233			$$ = $1;
234		else
235			$$ = new_que();
236		ins_que(&$2->d_q, $$->q_back);
237	    } else {
238		$$ = $1;
239	    }
240	  }
241	;
242
243/*
244 * A new filesystem:
245 *
246 * fs /dev/whatever { ... }
247 */
248filesystem :
249	  tFS tSTR '{' fs_info_list '}'
250	  { $4->d_dev = $2; $$ = $4; }
251
252	| tFS error '}'
253	  { $$ = (disk_fs *) 0; }
254	;
255
256/*
257 * Per-filesystem information:
258 *
259 * fstype - the type of the filesystem (4.2, nfs, swap, export)
260 * opts - the mount options ("rw,grpid")
261 * passno - fsck pass number
262 * freq - dump frequency
263 * dumpset - tape set for filesystem dumps
264 * mount - where to mount this filesystem
265 * log - log device
266 */
267fs_info_list :
268	  /* empty */
269	  { $$ = new_disk_fs(); }
270
271	| fs_info_list tFSTYPE '=' tSTR
272	  { $$ = $1; set_disk_fs($$, DF_FSTYPE, $4); }
273
274	| fs_info_list tOPTS '=' tSTR
275	  { $$ = $1; set_disk_fs($$, DF_OPTS, $4); }
276
277	| fs_info_list tPASSNO '=' tSTR
278	  { $$ = $1; set_disk_fs($$, DF_PASSNO, $4); }
279
280	| fs_info_list tFREQ '=' tSTR
281	  { $$ = $1; set_disk_fs($$, DF_FREQ, $4); }
282
283	| fs_info_list tMOUNT dir_tree
284	  { $$ = $1; set_disk_fs($$, DF_MOUNT, (char *) $3); }
285
286	| fs_info_list tDUMPSET '=' tSTR
287	  { $$ = $1; set_disk_fs($$, DF_DUMPSET, $4); }
288
289	| fs_info_list tLOG '=' tSTR
290	  { $$ = $1; set_disk_fs($$, DF_LOG, $4); }
291
292	| fs_info_list error '=' tSTR
293	  { yyerror("unknown filesystem attribute"); }
294	;
295
296/*
297 * An automount tree:
298 *
299 * name = "volname"	name is a reference to volname
300 * name -> "string"	name is a link to "string"
301 * name nfsalias "string"  name is a link to "string", string parsed as NFS
302 *			   pathname.
303 * name { ... }		name is an automount tree
304 */
305automount_tree :
306	  /* empty */
307	  { $$ = 0; }
308
309	| automount_tree tSTR opt_auto_opts '=' tSTR
310	  { automount *a = new_automount($2);
311	    a->a_volname = $5;
312	    a->a_opts = $3;
313	    if ($1)
314		$$ = $1;
315	    else
316		$$ = new_que();
317	    ins_que(&a->a_q, $$->q_back);
318	  }
319          | automount_tree tSTR opt_auto_opts tNFSEQ tSTR
320            { automount *a = new_automount($2);
321            a->a_hardwiredfs = $5;
322            a->a_opts = $3;
323            if ($1)
324                $$ = $1;
325            else
326                $$ = new_que();
327            ins_que(&a->a_q, $$->q_back);
328          }
329
330	| automount_tree tSTR tEQ tSTR
331	  { automount *a = new_automount($2);
332	    a->a_symlink = $4;
333	    if ($1)
334		$$ = $1;
335	    else
336		$$ = new_que();
337	    ins_que(&a->a_q, $$->q_back);
338	  }
339
340	| automount_tree tSTR opt_auto_opts '{' automount_tree '}'
341	  { automount *a = new_automount($2);
342	    a->a_mount = $5;
343	    a->a_opts = $3;
344	    if ($1)
345		$$ = $1;
346	    else
347		$$ = new_que();
348	    ins_que(&a->a_q, $$->q_back);
349	  }
350	;
351
352dir_tree :
353	  /* empty */
354	  { $$ = 0; }
355
356	| dir_tree tSTR '{' dir_tree_info dir_tree '}'
357	  { $4->m_mount = $5;
358	    $4->m_name = $2;
359	    if ($2[0] != '/' && $2[1] && strchr($2+1, '/'))
360		yyerror("not allowed '/' in a directory name");
361	    if ($1)
362		$$ = $1;
363	    else
364		$$ = new_que();
365	    ins_que(&$4->m_q, $$->q_back);
366	  }
367	;
368
369dir_tree_info :
370	  /* empty */
371	  { $$ = new_mount(); }
372
373	| dir_tree_info tEXPORTFS tSTR
374	  { $$ = $1; set_mount($$, DM_EXPORTFS, $3); }
375
376	| dir_tree_info tVOLNAME tSTR
377	  { $$ = $1; set_mount($$, DM_VOLNAME, $3); }
378
379	| dir_tree_info tSEL tSTR
380	  { $$ = $1; set_mount($$, DM_SEL, $3); }
381
382	| dir_tree_info error '=' tSTR
383	  { yyerror("unknown directory attribute"); }
384	;
385
386/*
387 * Additional mounts on a host
388 *
389 * mount "volname" ...
390 */
391list_of_mounts :
392	  /* empty */
393	  { $$ = 0; }
394
395	| list_of_mounts tMOUNT tSTR localinfo_list
396	  { set_fsmount($4, FM_VOLNAME, $3);
397	    if ($1)
398		$$ = $1;
399	    else
400		$$ = new_que();
401	    ins_que(&$4->f_q, $$->q_back);
402	    }
403	;
404
405/*
406 * Mount info:
407 *
408 * from "hostname"	- obtain the object from the named host
409 * as "string"		- where to mount, if different from the volname
410 * opts "string"	- mount options
411 * fstype "type"	- type of filesystem mount, if not nfs
412 * direct             - mount entry, no need to create ad-hoc hosts file
413 */
414localinfo_list :
415	  /* empty */
416	  { $$ = new_fsmount(); }
417
418        | localinfo_list tDIRECT
419          { $$ = $1; set_fsmount($$, FM_DIRECT, ""); }
420
421	| localinfo_list tAS tSTR
422	  { $$ = $1; set_fsmount($$, FM_LOCALNAME, $3); }
423
424	| localinfo_list tFROM tSTR
425	  { $$ = $1; set_fsmount($$, FM_FROM, $3); }
426
427	| localinfo_list tFSTYPE tSTR
428	  { $$ = $1; set_fsmount($$, FM_FSTYPE, $3); }
429
430	| localinfo_list tOPTS tSTR
431	  { $$ = $1; set_fsmount($$, FM_OPTS, $3); }
432
433	| localinfo_list error '=' tSTR
434	  { yyerror("unknown mount attribute"); }
435	;
436