1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 2000 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include <pthread.h>
30 #include <string.h>
31 #include <stdlib.h>
32
33 #include "Parser.h"
34
35 // yacc symbols
36 int fruparse(void);
37 extern int frudebug;
38
39 // global data to/from the lexer
40 pthread_mutex_t gParserLock;
41 fru_errno_t gParserErrno = FRU_SUCCESS;
42 char *gParserString = NULL;
43 Ancestor *gParserAnts = NULL;
44 PathDef *gParserHead = NULL;
45 int *gParserAbs = NULL;
46
47 // returns a NULL terminated list of PathDef objects.
48 // and a NULL terminated list of ancestor objects this path exists in
49 // NOTE: ancestors may be NULL if no tags contain a valid path.
50 fru_errno_t
fru_field_parser(const char * path,Ancestor ** ancestors,int * absolute,PathDef ** pathDef)51 fru_field_parser(const char *path, Ancestor **ancestors,
52 int *absolute, PathDef **pathDef)
53 {
54 // lock up the globals for the parser...
55 pthread_mutex_lock(&gParserLock);
56
57 // get out a string for the parser to play with.
58 gParserString = strdup(path);
59 if (gParserString == NULL) {
60 pthread_mutex_unlock(&gParserLock);
61 return (FRU_FAILURE);
62 }
63 // save the head pointer for delete.
64 char *delPtr = gParserString;
65
66 // frudebug = 1;
67
68 // set up for return data from lexer.
69 gParserHead = NULL;
70 gParserAnts = NULL;
71 gParserErrno = FRU_SUCCESS;
72 gParserAbs = absolute;
73 *gParserAbs = 0;
74
75 int rc = fruparse();
76
77 // clean up the string we used for yacc.
78 free(delPtr);
79 gParserString = NULL;
80
81 // frudebug = 0;
82 if (rc != 0) {
83 delete gParserHead;
84 delete gParserAnts;
85 fru_errno_t err = gParserErrno;
86 pthread_mutex_unlock(&gParserLock);
87 return (err);
88 }
89
90 /* if ((gParserHead == NULL) || (gParserAnts == NULL)) { */
91 /* allow ancestors to be NULL */
92 /* some elements don't have tagged ancestors */
93 if (gParserHead == NULL) {
94 delete gParserAnts;
95 pthread_mutex_unlock(&gParserLock);
96 return (FRU_FAILURE);
97 }
98
99 *pathDef = gParserHead;
100 *ancestors = gParserAnts;
101
102 pthread_mutex_unlock(&gParserLock);
103 return (FRU_SUCCESS);
104 }
105