yang: embed models into binaries

This bakes our YANG models straight into the library/daemons, so they
don't need to be loaded from /usr/share/yang.  This makes the
installation quite a bit more robust, as well as gets us halfway to
running uninstalled.  (The other half is baking in the extension type
module.)

The /usr/share/yang directory is still searched as a fallback, as well
as for the experimental YANG model translator.  This is likely to stay
as is for the time being.

Signed-off-by: David Lamparter <equinox@diac24.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/yang.h b/lib/yang.h
index cd5597ff8..b0348e320 100644
--- a/lib/yang.h
+++ b/lib/yang.h
@@ -44,6 +44,13 @@ DECLARE_MTYPE(YANG_DATA)
 /* Maximum string length of an YANG value. */
 #define YANG_VALUE_MAXLEN 1024
 
+struct yang_module_embed {
+	struct yang_module_embed *next;
+	const char *mod_name, *mod_rev;
+	const char *data;
+	LYS_INFORMAT format;
+};
+
 struct yang_module {
 	RB_ENTRY(yang_module) entry;
 	const char *name;
@@ -133,6 +140,16 @@ extern struct yang_module *yang_module_load(const char *module_name);
 extern struct yang_module *yang_module_find(const char *module_name);
 
 /*
+ * Register a YANG module embedded in the binary file.  Should be called
+ * from a constructor function.
+ *
+ * embed
+ *    YANG module embedding structure to register.  (static global provided
+ *    by caller.)
+ */
+extern void yang_module_embed(struct yang_module_embed *embed);
+
+/*
  * Iterate over all libyang schema nodes from the given YANG module.
  *
  * module