Describe the control message API

1 files changed, 6 insertions, 3 deletions

diff --git a/content/posts/WIP-how-bsd-authentication-works/index.org b/content/posts/WIP-how-bsd-authentication-works/index.org
index 4b48016..f051248 100644
--- a/content/posts/WIP-how-bsd-authentication-works/index.org
+++ b/content/posts/WIP-how-bsd-authentication-works/index.org
@@ -699,9 +699,12 @@
    #+end_src
 
    =_recv_fd= reads control messages, also called ancillary data, from
-   =fd= and tried to receive a file descriptor. If it receives one and
-   =as->fd= is equal to =-1=, it sets it to the received file
-   descriptor. Otherwise it closes the received file descriptor.
+   =fd= and tries to receive a file descriptor. It does this using the
+   [[https://man.openbsd.org/CMSG_DATA.3][control message API]].
+
+   If it receives one and =as->fd= is equal to =-1=, it sets it to the
+   received file descriptor. Otherwise it closes the received file
+   descriptor.
 
 ** _add_rmlist
    #+begin_src c