Author: pjd
Date: Sun Oct 24 17:24:08 2010
New Revision: 214283
URL: http://svn.freebsd.org/changeset/base/214283
Log:
Implement nv_exists() function that returns true if argument of the given
name exists.
MFC after: 3 days
Modified:
head/sbin/hastd/nv.c
head/sbin/hastd/nv.h
Modified: head/sbin/hastd/nv.c
==============================================================================
--- head/sbin/hastd/nv.c Sun Oct 24 17:22:34 2010 (r214282)
+++ head/sbin/hastd/nv.c Sun Oct 24 17:24:08 2010 (r214283)
@@ -46,6 +46,8 @@ __FBSDID("$FreeBSD$");
#include <ebuf.h>
#include <nv.h>
+#define NV_TYPE_NONE 0
+
#define NV_TYPE_INT8 1
#define NV_TYPE_UINT8 2
#define NV_TYPE_INT16 3
@@ -561,6 +563,29 @@ nv_get_string(struct nv *nv, const char
return (str);
}
+bool
+nv_exists(struct nv *nv, const char *namefmt, ...)
+{
+ struct nvhdr *nvh;
+ va_list nameap;
+ int snverror, serrno;
+
+ if (nv == NULL)
+ return (false);
+
+ serrno = errno;
+ snverror = nv->nv_error;
+
+ va_start(nameap, namefmt);
+ nvh = nv_find(nv, NV_TYPE_NONE, namefmt, nameap);
+ va_end(nameap);
+
+ errno = serrno;
+ nv->nv_error = snverror;
+
+ return (nvh != NULL);
+}
+
/*
* Dump content of the nv structure.
*/
@@ -797,7 +822,8 @@ nv_find(struct nv *nv, int type, const c
assert(size >= NVH_SIZE(nvh));
nv_swap(nvh, true);
if (strcmp(nvh->nvh_name, name) == 0) {
- if ((nvh->nvh_type & NV_TYPE_MASK) != type) {
+ if (type != NV_TYPE_NONE &&
+ (nvh->nvh_type & NV_TYPE_MASK) != type) {
errno = EINVAL;
if (nv->nv_error == 0)
nv->nv_error = EINVAL;
Modified: head/sbin/hastd/nv.h
==============================================================================
--- head/sbin/hastd/nv.h Sun Oct 24 17:22:34 2010 (r214282)
+++ head/sbin/hastd/nv.h Sun Oct 24 17:24:08 2010 (r214283)
@@ -126,6 +126,7 @@ const uint64_t *nv_get_uint64_array(stru
const char *nv_get_string(struct nv *nv, const char *namefmt, ...)
__printflike(2, 3);
+bool nv_exists(struct nv *nv, const char *namefmt, ...) __printflike(2, 3);
void nv_dump(struct nv *nv);
#endif /* !_NV_H_ */
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