tree 78c32ad3f4aee581e1f17bc477791fbc102b672c
parent d66bbd441c08fe00ed2add1cf70cb243ebc2b27e
author Sage Weil <sage@newdream.net> 1295972268 -0800
committer Sage Weil <sage@newdream.net> 1295972268 -0800

libceph: fix socket read error handling

If we get EAGAIN when trying to read from the socket, it is not an error.
Return 0 from the helper in this case to simplify the error handling cases
in the caller (indirectly, try_read).

Fix try_read to pass any error to it's caller (con_work) instead of almost
always returning 0.  This let's us respond to things like socket
disconnects.

Signed-off-by: Sage Weil <sage@newdream.net>