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| author | Eric Blake <eblake@redhat.com> | 2022-05-11 19:49:23 -0500 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2022-05-12 13:10:52 +0200 |
| commit | a5fced40212ed73c715ca298a2929dd4d99c9999 (patch) | |
| tree | cb41db6786ba8c64477d3b697ceb3326b0ce0150 /blockdev-nbd.c | |
| parent | 46609b90d9e3a6304def11038a76b58ff43f77bc (diff) | |
| download | qemu-a5fced40212ed73c715ca298a2929dd4d99c9999.zip qemu-a5fced40212ed73c715ca298a2929dd4d99c9999.tar.gz qemu-a5fced40212ed73c715ca298a2929dd4d99c9999.tar.bz2 | |
qemu-nbd: Pass max connections to blockdev layer
The next patch wants to adjust whether the NBD server code advertises
MULTI_CONN based on whether it is known if the server limits to
exactly one client. For a server started by QMP, this information is
obtained through nbd_server_start (which can support more than one
export); but for qemu-nbd (which supports exactly one export), it is
controlled only by the command-line option -e/--shared. Since we
already have a hook function used by qemu-nbd, it's easiest to just
alter its signature to fit our needs.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20220512004924.417153-2-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev-nbd.c')
| -rw-r--r-- | blockdev-nbd.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/blockdev-nbd.c b/blockdev-nbd.c index 7f6531c..711e0e7 100644 --- a/blockdev-nbd.c +++ b/blockdev-nbd.c @@ -30,18 +30,18 @@ typedef struct NBDServerData { } NBDServerData; static NBDServerData *nbd_server; -static bool is_qemu_nbd; +static int qemu_nbd_connections = -1; /* Non-negative if this is qemu-nbd */ static void nbd_update_server_watch(NBDServerData *s); -void nbd_server_is_qemu_nbd(bool value) +void nbd_server_is_qemu_nbd(int max_connections) { - is_qemu_nbd = value; + qemu_nbd_connections = max_connections; } bool nbd_server_is_running(void) { - return nbd_server || is_qemu_nbd; + return nbd_server || qemu_nbd_connections >= 0; } static void nbd_blockdev_client_closed(NBDClient *client, bool ignored) |