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nbd: Include error names in trace messages

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NBD errors were originally sent over the wire based on Linux errno
values; but not all the world is Linux, and not all platforms share
the same values.  Since a number isn't very easy to decipher on all
platforms, update the trace messages to include the name of NBD
errors being sent/received over the wire.  Tweak the trace messages
to be at the point where we are using the NBD error, not the
translation to the host errno values.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-2-eblake@redhat.com>
This commit is contained in:
Eric Blake 2017-10-27 12:40:26 +02:00
parent abf6e752e5
commit e7a78d0eff
5 changed files with 30 additions and 4 deletions
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1
nbd/nbd-internal.h
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@ -126,6 +126,7 @@ const char *nbd_opt_lookup(uint32_t opt);
const char *nbd_rep_lookup(uint32_t rep);
const char *nbd_info_lookup(uint16_t info);
const char *nbd_cmd_lookup(uint16_t info);
const char *nbd_err_lookup(int err);
int nbd_drop(QIOChannel *ioc, size_t size, Error **errp);