drm/i915: Fix hangs on some broadwell machines
[dragonfly.git] / contrib / amd / amd / info_ndbm.c
CommitLineData
984263bc
MD
1/*
2 * Copyright (c) 1997-1999 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: info_ndbm.c,v 1.2 1999/01/10 21:53:46 ezk Exp $
42 *
43 */
44
45/*
46 * Get info from NDBM map
47 */
48
49#ifdef HAVE_CONFIG_H
50# include <config.h>
51#endif /* HAVE_CONFIG_H */
52#include <am_defs.h>
53#include <amd.h>
54
55/* forward declarations */
56int ndbm_init(mnt_map *m, char *map, time_t *tp);
57int ndbm_mtime(mnt_map *m, char *map, time_t *tp);
58int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp);
59
60
61static int
62search_ndbm(DBM *db, char *key, char **val)
63{
64 datum k, v;
65
66 k.dptr = key;
67 k.dsize = strlen(key) + 1;
68 v = dbm_fetch(db, k);
69 if (v.dptr) {
70 *val = strdup(v.dptr);
71 return 0;
72 }
73 return ENOENT;
74}
75
76
77int
78ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp)
79{
80 DBM *db;
81
82 db = dbm_open(map, O_RDONLY, 0);
83 if (db) {
84 struct stat stb;
85 int error;
86#ifdef DBM_SUFFIX
87 char dbfilename[256];
88
89 strcpy(dbfilename, map);
90 strcat(dbfilename, DBM_SUFFIX);
91 error = stat(dbfilename, &stb);
92#else /* not DBM_SUFFIX */
93 error = fstat(dbm_pagfno(db), &stb);
94#endif /* not DBM_SUFFIX */
95 if (!error && *tp < stb.st_mtime) {
96 *tp = stb.st_mtime;
97 error = -1;
98 } else {
99 error = search_ndbm(db, key, pval);
100 }
101 (void) dbm_close(db);
102 return error;
103 }
104 return errno;
105}
106
107
108int
109ndbm_init(mnt_map *m, char *map, time_t *tp)
110{
111 DBM *db;
112
113 db = dbm_open(map, O_RDONLY, 0);
114 if (db) {
115 struct stat stb;
116 int error;
117#ifdef DBM_SUFFIX
118 char dbfilename[256];
119
120 strcpy(dbfilename, map);
121 strcat(dbfilename, DBM_SUFFIX);
122 error = stat(dbfilename, &stb);
123#else /* not DBM_SUFFIX */
124 error = fstat(dbm_pagfno(db), &stb);
125#endif /* not DBM_SUFFIX */
126 if (error < 0)
127 *tp = clocktime();
128 else
129 *tp = stb.st_mtime;
130 dbm_close(db);
131 return 0;
132 }
133 return errno;
134}
135
136
137int
138ndbm_mtime(mnt_map *m, char *map, time_t *tp)
139{
140 return ndbm_init(m,map, tp);
141}