xref: /illumos-gate/usr/src/compat/bhyve/sys/nv.h (revision 2b948146)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2021 OmniOS Community Edition (OmniOSce) Association.
14  */
15 
16 #ifndef _COMPAT_FREEBSD_SYS_NV_H_
17 #define	_COMPAT_FREEBSD_SYS_NV_H_
18 
19 #include <assert.h>
20 #include <libnvpair.h>
21 
22 #define	NV_TYPE_NVLIST	DATA_TYPE_NVLIST
23 #define	NV_TYPE_STRING	DATA_TYPE_STRING
24 
25 static inline const char *
nvlist_next(const nvlist_t * nvl,int * type,void ** cookie)26 nvlist_next(const nvlist_t *nvl, int *type, void **cookie)
27 {
28 	nvpair_t *nvp = *cookie;
29 
30 	nvp = nvlist_next_nvpair((nvlist_t *)nvl, nvp);
31 	if (nvp == NULL)
32 		return (NULL);
33 
34 	*cookie = nvp;
35 	*type = nvpair_type(nvp);
36 	return (nvpair_name(nvp));
37 }
38 
39 static inline nvlist_t *
nvlist_create(int flag)40 nvlist_create(int flag)
41 {
42 	nvlist_t *nvl;
43 
44 	/*
45 	 * We only emulate this with flag == 0, which is equivalent to the
46 	 * illumos NV_UNIQUE_NAME.
47 	 */
48 	assert(flag == 0);
49 
50 	if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
51 		return (NULL);
52 	return (nvl);
53 }
54 
55 static inline bool
nvlist_exists_nvlist(const nvlist_t * nvl,const char * name)56 nvlist_exists_nvlist(const nvlist_t *nvl, const char *name)
57 {
58 	nvlist_t *snvl;
59 
60 	return (nvlist_lookup_nvlist((nvlist_t *)nvl, name, &snvl) == 0);
61 }
62 
63 static inline nvlist_t *
nvlist_get_nvlist(const nvlist_t * nvl,const char * name)64 nvlist_get_nvlist(const nvlist_t *nvl, const char *name)
65 {
66 	nvlist_t *snvl;
67 
68 	if (nvlist_lookup_nvlist((nvlist_t *)nvl, name, &snvl) == 0)
69 		return (snvl);
70 	return (NULL);
71 }
72 
73 static inline bool
nvlist_exists_string(const nvlist_t * nvl,const char * name)74 nvlist_exists_string(const nvlist_t *nvl, const char *name)
75 {
76 	char *str;
77 
78 	return (nvlist_lookup_string((nvlist_t *)nvl, name, &str) == 0);
79 }
80 
81 static inline char *
nvlist_get_string(const nvlist_t * nvl,const char * name)82 nvlist_get_string(const nvlist_t *nvl, const char *name)
83 {
84 	char *str;
85 
86 	if (nvlist_lookup_string((nvlist_t *)nvl, name, &str) == 0)
87 		return (str);
88 	return (NULL);
89 }
90 
91 #define nvlist_free_string(nvl, name) nvlist_remove_all((nvl), (name))
92 
93 #endif /* _COMPAT_FREEBSD_SYS_NV_H_ */
94