From: Milan Broz <gmazyland@gmail.com>
Date: Wed, 5 Jan 2011 16:59:42 +0000 (+0000)
Subject: Document password callback.
X-Git-Tag: upstream/1.6~533
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6b42f15a95ea6074982d7b06e63f944574350dc0;p=platform%2Fupstream%2Fcryptsetup.git

Document password callback.

git-svn-id: https://cryptsetup.googlecode.com/svn/trunk@412 36d66b0a-2a48-0410-832c-cd162a569da5
---

diff --git a/lib/libcryptsetup.h b/lib/libcryptsetup.h
index abedba2..872dd1d 100644
--- a/lib/libcryptsetup.h
+++ b/lib/libcryptsetup.h
@@ -85,6 +85,9 @@ void crypt_set_confirm_callback(struct crypt_device *cd,
  * @buf - buffer for password
  * @length - size of buffer
  *
+ * Calback should return length of password in buffer
+ * or negative errno value in case of error.
+ *
  * - Note that if this function is defined, verify option is ignored
  *   (caller which provided callback is responsible for password verification)
  * - Only zero terminated passwords can be entered this way, for complex