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authorEric Blake <eblake@redhat.com>2021-02-09 09:27:59 -0600
committerEric Blake <eblake@redhat.com>2021-02-12 07:42:08 -0600
commit3dcf56e625c684178c0062d845f9fe05ecce346f (patch)
treed117ef75bc8369503536b489a207e04fd22ad0dc /qemu-nbd.c
parent582d4210eb2f2ab5baac328fe4b479cd86da1647 (diff)
downloadfocaccia-qemu-3dcf56e625c684178c0062d845f9fe05ecce346f.tar.gz
focaccia-qemu-3dcf56e625c684178c0062d845f9fe05ecce346f.zip
qemu-nbd: Permit --shared=0 for unlimited clients
This gives us better feature parity with QMP nbd-server-start, where
max-connections defaults to 0 for unlimited.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210209152759.209074-3-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Diffstat (limited to 'qemu-nbd.c')
-rw-r--r--qemu-nbd.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/qemu-nbd.c b/qemu-nbd.c
index 1a340ea485..b1b9430a8f 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -328,7 +328,7 @@ static void *nbd_client_thread(void *arg)
 
 static int nbd_can_accept(void)
 {
-    return state == RUNNING && nb_fds < shared;
+    return state == RUNNING && (shared == 0 || nb_fds < shared);
 }
 
 static void nbd_update_server_watch(void);
@@ -707,7 +707,7 @@ int main(int argc, char **argv)
             break;
         case 'e':
             if (qemu_strtoi(optarg, NULL, 0, &shared) < 0 ||
-                shared < 1) {
+                shared < 0) {
                 error_report("Invalid shared device number '%s'", optarg);
                 exit(EXIT_FAILURE);
             }
@@ -966,7 +966,7 @@ int main(int argc, char **argv)
     if (socket_activation == 0) {
         int backlog;
 
-        if (persistent) {
+        if (persistent || shared == 0) {
             backlog = SOMAXCONN;
         } else {
             backlog = MIN(shared, SOMAXCONN);