Add lvm_errno and lvm_errmsg to liblvm to obtain failure information.

Change create_toolcontext to still return an object if it fails part-way.
Add EUNCLASSIFIED (-1) as the default LVM errno code.

1 files changed, 14 insertions, 0 deletions

diff --git a/liblvm/lvm_base.c b/liblvm/lvm_base.c
index 4fa85419..2414ed08 100644
--- a/liblvm/lvm_base.c
+++ b/liblvm/lvm_base.c
@@ -29,6 +29,10 @@ lvm_t lvm_create(const char *system_dir)
 	cmd = create_toolcontext(1, system_dir);
 	if (!cmd)
 		return NULL;
+
+	if (stored_errno())
+		return (lvm_t) cmd;
+
 	/*
 	 * FIXME: if an non memory error occured, return the cmd (maybe some
 	 * cleanup needed).
@@ -66,3 +70,13 @@ int lvm_reload_config(lvm_t libh)
 	/* FIXME: re-init locking needed here? */
 	return refresh_toolcontext((struct cmd_context *)libh);
 }
+
+int lvm_errno(lvm_t libh)
+{
+	return stored_errno();
+}
+
+const char *lvm_errmsg(lvm_t libh)
+{
+	return stored_errmsg();
+}