nbd/server: add nbd_read_opt_name helper
commit12296459f4319e5d0a0f720ffc3d52113cde026e
authorVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Mon, 12 Mar 2018 15:21:20 +0000 (12 18:21 +0300)
committerEric Blake <eblake@redhat.com>
Tue, 13 Mar 2018 20:38:55 +0000 (13 15:38 -0500)
treeb83e985cd7c984a6ebedbf0b8a2c4d979529d664
parent2e425fd56849d36485131b3363ab596d39e0e13b
nbd/server: add nbd_read_opt_name helper

Add helper to read name in format:

  uint32 len       (<= NBD_MAX_NAME_SIZE)
  len bytes string (not 0-terminated)

The helper will be reused in following patch.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20180312152126.286890-3-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: grammar fixes, actually check error]
Signed-off-by: Eric Blake <eblake@redhat.com>
nbd/server.c