tree 1a3969c24b15bfb897796ce1903f817dc60a4bf1
parent 980b6f152fffb1b6e5234c3200e45ca104b8ef34
author Kun Yi <kunyi731@gmail.com> 1551422157 -0800
committer Kun Yi <kunyi731@gmail.com> 1551424434 -0800

Enhance dbus error reporting and logging

When an error condition is encountered in a sdbus method handler,
don't try to send a reply with an outstanding error condition, which
will end up being rejected by DBus. Use helper sd_bus_set_error_x()
whose return value will be the error itself and can be returned
directly. Additionally, add more informational debug messages
in several occasions.

Tested: manually insert "goto" to trigger the error conditions and
verify that dbus-monitor no longer see rejected message replies.

Resolve openbmc/opembmc#3488

Change-Id: Ic5c3624f21db3c2d0dbaca6f11e8054adc4c0585
Signed-off-by: Kun Yi <kunyi731@gmail.com>