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b43c6fe2 BP |
1 | #line 2 "@srcdir@/lib/dirs.c.in" |
2 | /* | |
811d6451 | 3 | * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc. |
b43c6fe2 BP |
4 | * |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at: | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | ||
18 | #include <config.h> | |
19 | #include "dirs.h" | |
20 | #include <stdlib.h> | |
811d6451 | 21 | #include "ovs-thread.h" |
c3bf5498 | 22 | #include "util.h" |
b43c6fe2 BP |
23 | |
24 | struct directory { | |
25 | const char *value; /* Actual value; NULL if not yet determined. */ | |
26 | const char *default_value; /* Default value. */ | |
27 | const char *var_name; /* Environment variable to override default. */ | |
811d6451 | 28 | struct ovsthread_once once; /* Ensures 'value' gets initialized once. */ |
b43c6fe2 BP |
29 | }; |
30 | ||
31 | static const char * | |
32 | get_dir(struct directory *d) | |
33 | { | |
811d6451 | 34 | if (ovsthread_once_start(&d->once)) { |
b43c6fe2 BP |
35 | d->value = getenv(d->var_name); |
36 | if (!d->value || !d->value[0]) { | |
37 | d->value = d->default_value; | |
38 | } | |
811d6451 | 39 | ovsthread_once_done(&d->once); |
b43c6fe2 BP |
40 | } |
41 | return d->value; | |
42 | } | |
43 | ||
2fad9ebd BP |
44 | const char * |
45 | ovs_sysconfdir(void) | |
46 | { | |
811d6451 BP |
47 | static struct directory d = { |
48 | NULL, @sysconfdir@, "OVS_SYSCONFDIR", OVSTHREAD_ONCE_INITIALIZER | |
49 | }; | |
50 | ||
2fad9ebd BP |
51 | return get_dir(&d); |
52 | } | |
53 | ||
b43c6fe2 BP |
54 | const char * |
55 | ovs_pkgdatadir(void) | |
56 | { | |
811d6451 BP |
57 | static struct directory d = { |
58 | NULL, @pkgdatadir@, "OVS_PKGDATADIR", OVSTHREAD_ONCE_INITIALIZER | |
59 | }; | |
60 | ||
b43c6fe2 BP |
61 | return get_dir(&d); |
62 | } | |
63 | ||
64 | const char * | |
65 | ovs_rundir(void) | |
66 | { | |
811d6451 BP |
67 | static struct directory d = { |
68 | NULL, @RUNDIR@, "OVS_RUNDIR", OVSTHREAD_ONCE_INITIALIZER | |
69 | }; | |
70 | ||
b43c6fe2 BP |
71 | return get_dir(&d); |
72 | } | |
73 | ||
74 | const char * | |
75 | ovs_logdir(void) | |
76 | { | |
811d6451 BP |
77 | static struct directory d = { |
78 | NULL, @LOGDIR@, "OVS_LOGDIR", OVSTHREAD_ONCE_INITIALIZER | |
79 | }; | |
80 | ||
b43c6fe2 BP |
81 | return get_dir(&d); |
82 | } | |
83 | ||
f973f2af BP |
84 | const char * |
85 | ovs_dbdir(void) | |
86 | { | |
811d6451 | 87 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
c3bf5498 | 88 | static const char *dbdir; |
811d6451 BP |
89 | |
90 | if (ovsthread_once_start(&once)) { | |
c3bf5498 BP |
91 | dbdir = getenv("OVS_DBDIR"); |
92 | if (!dbdir || !dbdir[0]) { | |
93 | char *sysconfdir = getenv("OVS_SYSCONFDIR"); | |
94 | ||
95 | dbdir = (sysconfdir | |
96 | ? xasprintf("%s/openvswitch", sysconfdir) | |
97 | : @DBDIR@); | |
98 | } | |
811d6451 | 99 | ovsthread_once_done(&once); |
c3bf5498 BP |
100 | } |
101 | return dbdir; | |
f973f2af BP |
102 | } |
103 | ||
b43c6fe2 BP |
104 | const char * |
105 | ovs_bindir(void) | |
106 | { | |
811d6451 BP |
107 | static struct directory d = { |
108 | NULL, @bindir@, "OVS_BINDIR", OVSTHREAD_ONCE_INITIALIZER | |
109 | }; | |
110 | ||
b43c6fe2 BP |
111 | return get_dir(&d); |
112 | } |