From: Vladimir Sementsov-Ogievskiy <address@hidden>
Minimal implementation: for structured error only error_report error
message.
Note that test 83 is now more verbose, because the implementation
prints more warnings about unexpected communication errors; perhaps
future patches should tone things down by using trace messages
instead of traces, but the common case of successful communication
is no noisier than before.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Signed-off-by: Eric Blake <address@hidden>
---
v6: tweak overflow check [Vladimir], fix reads to use absolute offset
from server by tracking original offset, fix talking to old-style server,
tweak iotest 83 output to account for new verbosity
v5: fix payload_advance[32,64], return correct negative error on
structured error, rearrange size checks to not be vulnerable to
overflow, simplify payload to use g_new instead of qemu_memalign,
don't set errp when returning 0, validate that error message
length is sane