search for: nbd_unlocked_can_multi_conn

...h->exportsize = exportsize; h->eflags = eflags; return 0; @@ -95,6 +100,12 @@ nbd_unlocked_can_zero (struct nbd_handle *h) return get_flag (h, NBD_FLAG_SEND_WRITE_ZEROES); } +int +nbd_unlocked_can_df (struct nbd_handle *h) +{ + return get_flag (h, NBD_FLAG_SEND_DF); +} + int nbd_unlocked_can_multi_conn (struct nbd_handle *h) { diff --git a/lib/rw.c b/lib/rw.c index feaf468..343c340 100644 --- a/lib/rw.c +++ b/lib/rw.c @@ -234,11 +234,17 @@ int64_t nbd_unlocked_aio_pread (struct nbd_handle *h, void *buf, size_t count, uint64_t offset, uint32_t flags) { - if (flags != 0...

...h->exportsize = exportsize; h->eflags = eflags; return 0; @@ -95,6 +100,12 @@ nbd_unlocked_can_zero (struct nbd_handle *h) return get_flag (h, NBD_FLAG_SEND_WRITE_ZEROES); } +int +nbd_unlocked_can_df (struct nbd_handle *h) +{ + return get_flag (h, NBD_FLAG_SEND_DF); +} + int nbd_unlocked_can_multi_conn (struct nbd_handle *h) { diff --git a/lib/nbd-protocol.h b/lib/nbd-protocol.h index 071971e..405af3e 100644 --- a/lib/nbd-protocol.h +++ b/lib/nbd-protocol.h @@ -245,6 +245,7 @@ struct nbd_structured_reply_error { #define NBD_ENOMEM 12 #define NBD_EINVAL 22 #define NBD_ENOSPC 28 +#d...

RFC because this is an API break, but we haven't declared stable API yet. If we like it, I'm working on using libnbd to implement the nbdkit-nbd plugin; knowing whether it is API version 0.1 or 0.2 will be useful. I also dabbled with allowing optional parameters in python, although my OCaml is weak enough that there may be cleaner ways to approach that. Eric Blake (4): api: Add flags

Since v1: - rebase to applied patches - split out support for Int in callbacks - sort of test that callbacks work in OCaml (see comment in patch 5) - rename API to nbd_pread_structured - expose error as explicit parameter to callback Eric Blake (5): generator: Allow Int in callbacks states: Wire in a read callback states: Add nbd_pread_structured API states: Add tests for

I've mentioned this topic before (in fact, the idea of adding NBD_CMD_FLAG_DF was first mentioned at [1]), but finally finished enough of an implementation to feel confident in posting it. I'd still like to add something under examples/ that uses the new API to implement strict checking of a server's structured replies read implementation (ensure that a server never sends data after