nvram: add nvram_query_eq()

Adds a helper that looks for the given NVRAM config string and checks
that associated value is equal to the supplied value.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/core/nvram-format.c b/core/nvram-format.c
index b98aee1..b110d80 100644
--- a/core/nvram-format.c
+++ b/core/nvram-format.c
@@ -262,3 +262,14 @@ const char *nvram_query(const char *key)
 
 	return NULL;
 }
+
+
+bool nvram_query_eq(const char *key, const char *value)
+{
+	const char *s = nvram_query(key);
+
+	if (!s)
+		return false;
+
+	return !strcmp(s, value);
+}