Upstream patch to fix the --dump-config output.

0001-server-Fix-binary-in-dump-config-output.patch

@@ -0,0 +1,43 @@
+From 43f7e07c5b087996ea0c7a80dcf44976d81620be Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Sat, 2 May 2020 11:00:33 +0100
+Subject: [PATCH] server: Fix binary in --dump-config output.
+
+As written this will only work on Linux.  On platforms which lack
+/proc/self/exe the binary name will be missing in the output.
+
+Fixes: commit a47857b47b88adbf5054772be4d6746ec08ca16f
+---
+ server/main.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/server/main.c b/server/main.c
+index eb04a174..9dd9d400 100644
+--- a/server/main.c
++++ b/server/main.c
+@@ -129,11 +129,10 @@ display_version (void)
+ }
+ 
+ static void
+-dump_config (const char *argv0)
++dump_config (void)
+ {
+-  CLEANUP_FREE char *binary;
++  CLEANUP_FREE char *binary = realpath ("/proc/self/exe", NULL);
+ 
+-  binary = realpath (argv0, NULL);
+   if (binary != NULL)
+     printf ("%s=%s\n", "binary", binary);
+   printf ("%s=%s\n", "bindir", bindir);
+@@ -216,7 +215,7 @@ main (int argc, char *argv[])
+ 
+     switch (c) {
+     case DUMP_CONFIG_OPTION:
+-      dump_config (argv[0]);
++      dump_config ();
+       exit (EXIT_SUCCESS);
+ 
+     case DUMP_PLUGIN_OPTION:
+-- 
+2.25.0
+

nbdkit.spec

@@ -38,7 +38,7 @@ ExclusiveArch:  x86_64
 
 Name:           nbdkit
 Version:        1.20.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        NBD server
 
 License:        BSD
@@ -51,6 +51,9 @@ Source1:        http://libguestfs.org/download/nbdkit/%{source_directory}/%{name
 Source2:       libguestfs.keyring
 %endif
 
+# Upstream patch to fix the --dump-config output.
+Patch1:        0001-server-Fix-binary-in-dump-config-output.patch
+
 %if 0%{patches_touch_autotools}
 BuildRequires: autoconf, automake, libtool
 %endif
@@ -972,7 +975,7 @@ make %{?_smp_mflags} check || {
 
 
 %changelog
-* Sat May  2 2020 Richard W.M. Jones <rjones@redhat.com> - 1.20.0-1
+* Sat May  2 2020 Richard W.M. Jones <rjones@redhat.com> - 1.20.0-2
 - New upstream version 1.20.0.
 
 * Thu Apr 30 2020 Richard W.M. Jones <rjones@redhat.com> - 1.19.12-1