Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
common/imd.c | 31 +++++++++++++++++++++++++++++++
include/image-metadata.h | 1 +
2 files changed, 32 insertions(+)
diff --git a/common/imd.c b/common/imd.c
index 06822bb..4b22f41 100644
--- a/common/imd.c
+++ b/common/imd.c
@@ -255,6 +255,37 @@ char *imd_concat_strings(struct imd_header *imd)
return str;
}
+/**
+ * imd_get_param - get a parameter
+ * @imd: The IMD entry
+ * @name: The name of the parameter.
+ *
+ * Parameters have the IMD type IMD_TYPE_PARAMETER and the form
+ * "key=value". This function iterates over the IMD entries and when
+ * it finds a parameter with name "key" it returns the value found.
+ *
+ * Return: A pointer to the value or NULL if the string is not found
+ */
+const char *imd_get_param(struct imd_header *imd, const char *name)
+{
+ struct imd_header *cur;
+ int namelen = strlen(name);
+
+ imd_for_each(imd, cur) {
+ char *data = (char *)(cur + 1);
+
+ if (cur->type != IMD_TYPE_PARAMETER)
+ continue;
+ if (strncmp(name, data, namelen))
+ continue;
+ if (data[namelen] != '=')
+ continue;
+ return data + namelen + 1;
+ }
+
+ return NULL;
+}
+
int imd_command_verbose;
int imd_command(int argc, char *argv[])
diff --git a/include/image-metadata.h b/include/image-metadata.h
index 33ca9c6..0ba9246 100644
--- a/include/image-metadata.h
+++ b/include/image-metadata.h
@@ -84,6 +84,7 @@ struct imd_header *imd_get(void *buf, int size);
const char *imd_string_data(struct imd_header *imd, int index);
const char *imd_type_to_name(uint32_t type);
char *imd_concat_strings(struct imd_header *imd);
+const char *imd_get_param(struct imd_header *imd, const char *name);
extern int imd_command_verbose;
int imd_command_setenv(const char *variable_name, const char *value);
--
2.7.0
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