Libguestfs - Feb 2023 - [libnbd PATCH v3 29/29] socket activation: set LISTEN_FDNAMES

When the user calls nbd_set_socket_activation_name before calling
nbd_connect_system_socket_activation, pass the name down to the server
through LISTEN_FDNAMES.  This has no effect unless the new API has
been called to set the socket name to a non-empty string.

https://lists.nongnu.org/archive/html/qemu-devel/2023-01/msg06114.html

[Original commit message and upstream discussion reference by Rich Jones;
at
<https://listman.redhat.com/archives/libguestfs/2023-January/030558.html>
/ msgid <20230130225521.1771496-5-rjones at redhat.com>.]

Signed-off-by: Laszlo Ersek <lersek at redhat.com>
---
 generator/states-connect-socket-activation.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/generator/states-connect-socket-activation.c
b/generator/states-connect-socket-activation.c
index 94d641cde6d9..150b5d6ac005 100644
--- a/generator/states-connect-socket-activation.c
+++ b/generator/states-connect-socket-activation.c
@@ -184,7 +184,7 @@  CONNECT_SA.START:
   struct sockaddr_un addr;
   struct execvpe execvpe_ctx;
   size_t num_vars;
-  struct sact_var sact_var[2];
+  struct sact_var sact_var[3];
   size_t pid_ofs;
   string_vector env;
   pid_t pid;
@@ -244,6 +244,9 @@  CONNECT_SA.START:
                  "LISTEN_PID=",
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", &pid_ofs);
   SACT_VAR_PUSH (sact_var, &num_vars,
                  "LISTEN_FDS=", "1", NULL);
+  if (h->sact_name != NULL)
+    SACT_VAR_PUSH (sact_var, &num_vars,
+                   "LISTEN_FDNAMES=", h->sact_name, NULL);
   if (prepare_socket_activation_environment (&env, sact_var, num_vars) ==
-1) {
     set_error (errno, "prepare_socket_activation_environment");
     goto uninit_execvpe;

For #26, #27, #28, #29:

Reviewed-by: Richard W.M. Jones <rjones at redhat.com>


-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v