From 60ace2bacfbadb0cfae265929024dbece1ecf9af Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Thu, 8 Mar 2018 21:46:32 +0300 Subject: [PATCH] nbd/server: move nbd_co_send_structured_error up To be reused in nbd_co_send_sparse_read() in the following patch. Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20180308184636.178534-2-vsementsov@virtuozzo.com> Reviewed-by: Eric Blake Signed-off-by: Eric Blake --- nbd/server.c | 48 ++++++++++++++++++++++++------------------------ 1 file changed, 24 insertions(+), 24 deletions(-) diff --git a/nbd/server.c b/nbd/server.c index e714bfe6a1..3d0f024193 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -1342,6 +1342,30 @@ static int coroutine_fn nbd_co_send_structured_read(NBDClient *client, return nbd_co_send_iov(client, iov, 2, errp); } +static int coroutine_fn nbd_co_send_structured_error(NBDClient *client, + uint64_t handle, + uint32_t error, + const char *msg, + Error **errp) +{ + NBDStructuredError chunk; + int nbd_err = system_errno_to_nbd_errno(error); + struct iovec iov[] = { + {.iov_base = &chunk, .iov_len = sizeof(chunk)}, + {.iov_base = (char *)msg, .iov_len = msg ? strlen(msg) : 0}, + }; + + assert(nbd_err); + trace_nbd_co_send_structured_error(handle, nbd_err, + nbd_err_lookup(nbd_err), msg ? msg : ""); + set_be_chunk(&chunk.h, NBD_REPLY_FLAG_DONE, NBD_REPLY_TYPE_ERROR, handle, + sizeof(chunk) - sizeof(chunk.h) + iov[1].iov_len); + stl_be_p(&chunk.error, nbd_err); + stw_be_p(&chunk.message_length, iov[1].iov_len); + + return nbd_co_send_iov(client, iov, 1 + !!iov[1].iov_len, errp); +} + static int coroutine_fn nbd_co_send_sparse_read(NBDClient *client, uint64_t handle, uint64_t offset, @@ -1401,30 +1425,6 @@ static int coroutine_fn nbd_co_send_sparse_read(NBDClient *client, return ret; } -static int coroutine_fn nbd_co_send_structured_error(NBDClient *client, - uint64_t handle, - uint32_t error, - const char *msg, - Error **errp) -{ - NBDStructuredError chunk; - int nbd_err = system_errno_to_nbd_errno(error); - struct iovec iov[] = { - {.iov_base = &chunk, .iov_len = sizeof(chunk)}, - {.iov_base = (char *)msg, .iov_len = msg ? strlen(msg) : 0}, - }; - - assert(nbd_err); - trace_nbd_co_send_structured_error(handle, nbd_err, - nbd_err_lookup(nbd_err), msg ? msg : ""); - set_be_chunk(&chunk.h, NBD_REPLY_FLAG_DONE, NBD_REPLY_TYPE_ERROR, handle, - sizeof(chunk) - sizeof(chunk.h) + iov[1].iov_len); - stl_be_p(&chunk.error, nbd_err); - stw_be_p(&chunk.message_length, iov[1].iov_len); - - return nbd_co_send_iov(client, iov, 1 + !!iov[1].iov_len, errp); -} - /* nbd_co_receive_request * Collect a client request. Return 0 if request looks valid, -EIO to drop * connection right away, and any other negative value to report an error to