From 7f73e64e8b369e655a322cd2877b5a1222f5b245 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 17 Mar 2016 16:14:32 +0100 Subject: imd: Add function to read parameters Signed-off-by: Sascha Hauer --- common/imd.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'common/imd.c') diff --git a/common/imd.c b/common/imd.c index 1cc4d719ec..241ebbdaed 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[]) -- cgit v1.2.3