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List: linux-keyrings
Subject: [PATCH v2 3/7] keyctl_dh_compute.3: clarify keyctl_dh_compute_kdf
From: Ben Boeckel <mathstuf () gmail ! com>
Date: 2018-09-27 13:14:32
Message-ID: 20180927131436.23328-4-mathstuf () gmail ! com
[Download RAW message or body]
Signed-off-by: Ben Boeckel <mathstuf@gmail.com>
---
man/keyctl_dh_compute.3 | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/man/keyctl_dh_compute.3 b/man/keyctl_dh_compute.3
index bb1274c..09c5d21 100644
--- a/man/keyctl_dh_compute.3
+++ b/man/keyctl_dh_compute.3
@@ -104,10 +104,10 @@ parameter is specified with
and is restricted to a maximum length by the kernel.
.P
The KDF returns the requested number of bytes specified with the
-.I genlen
-or the
.I buflen
-parameter depending on the invoked function.
+parameter into the
+.I buffer
+argument.
.P
.I buffer
and
@@ -128,7 +128,13 @@ On success
.BR keyctl_dh_compute_alloc ()
returns the amount of data in the buffer.
.P
-On error, both functions set errno to an appropriate code and return the value
+On success
+.BR keyctl_dh_compute_kdf ()
+returns the amount of data placed into the buffer when
+.I buflen
+is non-zero.
+.P
+On error, all functions set errno to an appropriate code and return the value
.BR -1 .
.\"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
.SH ERRORS
--
2.19.0.221.g150f307afc
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