diff --git a/.gitignore b/.gitignore
index 807b2b8..058e3c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
 SOURCES/libguestfs.keyring
-SOURCES/libnbd-1.18.1.tar.gz
+SOURCES/libnbd-1.20.2.tar.gz
diff --git a/.libnbd.metadata b/.libnbd.metadata
index b6a02f4..323911f 100644
--- a/.libnbd.metadata
+++ b/.libnbd.metadata
@@ -1,2 +1,2 @@
 cc1b37b9cfafa515aab3eefd345ecc59aac2ce7b SOURCES/libguestfs.keyring
-4f99e6f21edffe62b394aa9c7fb68149e6d4d5e4 SOURCES/libnbd-1.18.1.tar.gz
+d3abc6e794dd4b99640328bfd395a8913288e859 SOURCES/libnbd-1.20.2.tar.gz
diff --git a/SOURCES/0001-generator-Fix-assertion-in-ext-mode-BLOCK_STATUS-CVE.patch b/SOURCES/0001-generator-Fix-assertion-in-ext-mode-BLOCK_STATUS-CVE.patch
deleted file mode 100644
index d660188..0000000
--- a/SOURCES/0001-generator-Fix-assertion-in-ext-mode-BLOCK_STATUS-CVE.patch
+++ /dev/null
@@ -1,88 +0,0 @@
-From 4451e5b61ca07771ceef3e012223779e7a0c7701 Mon Sep 17 00:00:00 2001
-From: Eric Blake <eblake@redhat.com>
-Date: Mon, 30 Oct 2023 12:50:53 -0500
-Subject: [PATCH] generator: Fix assertion in ext-mode BLOCK_STATUS,
- CVE-2023-5871
-
-Another round of fuzz testing revealed that when a server negotiates
-extended headers and replies with a 64-bit flag value where the client
-used the 32-bit API command, we were correctly flagging the server's
-response as being an EOVERFLOW condition, but then immediately failing
-in an assertion failure instead of reporting it to the application.
-
-The following one-byte change to qemu.git at commit fd9a38fd43 allows
-the creation of an intentionally malicious server:
-
-| diff --git i/nbd/server.c w/nbd/server.c
-| index 859c163d19f..32e1e771a95 100644
-| --- i/nbd/server.c
-| +++ w/nbd/server.c
-| @@ -2178,7 +2178,7 @@ static void nbd_extent_array_convert_to_be(NBDExtentArray *ea)
-|
-|      for (i = 0; i < ea->count; i++) {
-|          ea->extents[i].length = cpu_to_be64(ea->extents[i].length);
-| -        ea->extents[i].flags = cpu_to_be64(ea->extents[i].flags);
-| +        ea->extents[i].flags = ~cpu_to_be64(ea->extents[i].flags);
-|      }
-|  }
-
-and can then be detected with the following command line:
-
-$ nbdsh -c - <<\EOF
-> def f(a,b,c,d):
->   pass
->
-> h.connect_systemd_socket_activation(["/path/to/bad/qemu-nbd",
->   "-r", "-f", "raw", "TODO"])
-> h.block_staus(h.get_size(), 0, f)
-> EOF
-nbdsh: generator/states-reply-chunk.c:626: enter_STATE_REPLY_CHUNK_REPLY_RECV_BS_ENTRIES: Assertion `(len | flags) <= UINT32_MAX' failed.
-Aborted (core dumped)
-
-whereas a fixed libnbd will give:
-
-nbdsh: command line script failed: nbd_block_status: block-status: command failed: Value too large for defined data type
-
-We can either relax the assertion (by changing to 'assert ((len |
-flags) <= UINT32_MAX || cmd->error)'), or intentionally truncate flags
-to make the existing assertion reliable.  This patch goes with the
-latter approach.
-
-Sadly, this crash is possible in all existing 1.18.x stable releases,
-if they were built with assertions enabled (most distros do this by
-default), meaning a malicious server has an easy way to cause a Denial
-of Service attack by triggering the assertion failure in vulnerable
-clients, so we have assigned this CVE-2023-5871.  Mitigating factors:
-the crash only happens for a server that sends a 64-bit status block
-reply (no known production servers do so; qemu 8.2 will be the first
-known server to support extended headers, but it is not yet released);
-and as usual, a client can use TLS to guarantee it is connecting only
-to a known-safe server.  If libnbd is compiled without assertions,
-there is no crash or other mistaken behavior; and when assertions are
-enabled, the attacker cannot accomplish anything more than a denial of
-service.
-
-Reported-by: Richard W.M. Jones <rjones@redhat.com>
-Fixes: 20dadb0e10 ("generator: Prepare for extent64 callback", v1.17.4)
-Signed-off-by: Eric Blake <eblake@redhat.com>
-(cherry picked from commit 177308adb17e81fce7c0f2b2fcf655c5c0b6a4d6)
-Signed-off-by: Eric Blake <eblake@redhat.com>
----
- generator/states-reply-chunk.c | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/generator/states-reply-chunk.c b/generator/states-reply-chunk.c
-index 5a31c19..8ab7e8b 100644
---- a/generator/states-reply-chunk.c
-+++ b/generator/states-reply-chunk.c
-@@ -600,6 +600,7 @@ STATE_MACHINE {
-             break; /* Skip this and later extents; we already made progress */
-           /* Expose this extent as an error; we made no progress */
-           cmd->error = cmd->error ? : EOVERFLOW;
-+          flags = (uint32_t)flags;
-         }
-       }
- 
--- 
-2.39.3
-
diff --git a/SOURCES/0001-generator-Print-full-error-in-handle_reply_error.patch b/SOURCES/0001-generator-Print-full-error-in-handle_reply_error.patch
new file mode 100644
index 0000000..5ec5aea
--- /dev/null
+++ b/SOURCES/0001-generator-Print-full-error-in-handle_reply_error.patch
@@ -0,0 +1,191 @@
+From 89f0e33f355681b7c5b1835a09c5fac93c08e71e Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Tue, 23 Jul 2024 17:22:12 +0100
+Subject: [PATCH] generator: Print full error in handle_reply_error
+
+Print the full error from the server during handshaking.  This
+modifies the contract of handle_reply_error so it calls set_error,
+which can be overridden by callers or ignored completely.
+
+(cherry picked from commit cf49a49adc8abc8c917437db7461ed9956583877)
+---
+ generator/states-newstyle-opt-go.c           | 32 +--------
+ generator/states-newstyle-opt-list.c         |  5 +-
+ generator/states-newstyle-opt-meta-context.c |  8 +--
+ generator/states-newstyle.c                  | 68 ++++++++++++++++++--
+ 4 files changed, 69 insertions(+), 44 deletions(-)
+
+diff --git a/generator/states-newstyle-opt-go.c b/generator/states-newstyle-opt-go.c
+index 5bc9a9ae..f6eb8afc 100644
+--- a/generator/states-newstyle-opt-go.c
++++ b/generator/states-newstyle-opt-go.c
+@@ -247,37 +247,9 @@ STATE_MACHINE {
+       SET_NEXT_STATE (%.DEAD);
+       return 0;
+     }
+-    /* Decode expected known errors into a nicer string */
+-    switch (reply) {
+-    case NBD_REP_ERR_UNSUP:
++    if (reply == NBD_REP_ERR_UNSUP)
+       assert (h->opt_current == NBD_OPT_INFO);
+-      set_error (ENOTSUP, "handshake: server lacks NBD_OPT_INFO support");
+-      break;
+-    case NBD_REP_ERR_POLICY:
+-    case NBD_REP_ERR_PLATFORM:
+-      set_error (0, "handshake: server policy prevents NBD_OPT_GO");
+-      break;
+-    case NBD_REP_ERR_INVALID:
+-    case NBD_REP_ERR_TOO_BIG:
+-      set_error (EINVAL, "handshake: server rejected NBD_OPT_GO as invalid");
+-      break;
+-    case NBD_REP_ERR_TLS_REQD:
+-      set_error (ENOTSUP, "handshake: server requires TLS encryption first");
+-      break;
+-    case NBD_REP_ERR_UNKNOWN:
+-      set_error (ENOENT, "handshake: server has no export named '%s'",
+-                 h->export_name);
+-      break;
+-    case NBD_REP_ERR_SHUTDOWN:
+-      set_error (ESHUTDOWN, "handshake: server is shutting down");
+-      break;
+-    case NBD_REP_ERR_BLOCK_SIZE_REQD:
+-      set_error (EINVAL, "handshake: server requires specific block sizes");
+-      break;
+-    default:
+-      set_error (0, "handshake: unknown reply from NBD_OPT_GO: 0x%" PRIx32,
+-                 reply);
+-    }
++
+     nbd_internal_reset_size_and_flags (h);
+     h->meta_valid = false;
+     err = nbd_get_errno () ? : ENOTSUP;
+diff --git a/generator/states-newstyle-opt-list.c b/generator/states-newstyle-opt-list.c
+index cdd4676e..6605ee0a 100644
+--- a/generator/states-newstyle-opt-list.c
++++ b/generator/states-newstyle-opt-list.c
+@@ -127,9 +127,8 @@ STATE_MACHINE {
+       SET_NEXT_STATE (%.DEAD);
+       return 0;
+     }
+-    err = ENOTSUP;
+-    set_error (err, "unexpected response, possibly the server does not "
+-               "support listing exports");
++    debug (h, "unexpected response, possibly the server does not "
++           "support listing exports");
+     break;
+   }
+ 
+diff --git a/generator/states-newstyle-opt-meta-context.c b/generator/states-newstyle-opt-meta-context.c
+index 6f016e66..3945411e 100644
+--- a/generator/states-newstyle-opt-meta-context.c
++++ b/generator/states-newstyle-opt-meta-context.c
+@@ -270,12 +270,8 @@ STATE_MACHINE {
+     }
+ 
+     if (opt == h->opt_current) {
+-      /* XXX Should we decode specific expected errors, like
+-       * REP_ERR_UNKNOWN to ENOENT or REP_ERR_TOO_BIG to ERANGE?
+-       */
+-      err = ENOTSUP;
+-      set_error (err, "unexpected response, possibly the server does not "
+-                 "support meta contexts");
++      debug (h, "unexpected response, possibly the server does not "
++             "support meta contexts");
+       CALL_CALLBACK (h->opt_cb.completion, &err);
+       nbd_internal_free_option (h);
+       SET_NEXT_STATE (%.NEGOTIATING);
+diff --git a/generator/states-newstyle.c b/generator/states-newstyle.c
+index 45893a8b..6c7cc45c 100644
+--- a/generator/states-newstyle.c
++++ b/generator/states-newstyle.c
+@@ -79,14 +79,18 @@ prepare_for_reply_payload (struct nbd_handle *h, uint32_t opt)
+   return 0;
+ }
+ 
+-/* Check an unexpected server reply. If it is an error, log any
+- * message from the server and return 0; otherwise, return -1.
++/* Check an unexpected server reply error.
++ *
++ * This calls set_error with a descriptive error message and returns
++ * 0.  Unless there is a further unexpected error while processing
++ * this error, in which case it calls set_error and returns -1.
+  */
+ static int
+ handle_reply_error (struct nbd_handle *h)
+ {
+   uint32_t len;
+   uint32_t reply;
++  char *msg = NULL;
+ 
+   len = be32toh (h->sbuf.or.option_reply.replylen);
+   reply = be32toh (h->sbuf.or.option_reply.reply);
+@@ -101,9 +105,63 @@ handle_reply_error (struct nbd_handle *h)
+     return -1;
+   }
+ 
+-  if (len > 0)
+-    debug (h, "handshake: server error message: %.*s", (int)len,
+-           h->sbuf.or.payload.err_msg);
++  /* Decode expected errors into a nicer string.
++   *
++   * XXX Note this string comes directly from the server, and most
++   * libnbd users simply print the error using 'fprintf'.  We really
++   * ought to quote this string somehow, but we don't have a useful
++   * function for that.
++   */
++  if (len > 0) {
++    if (asprintf (&msg, ": %.*s",
++                  (int)len, h->sbuf.or.payload.err_msg) == -1) {
++      set_error (errno, "asprintf");
++      return -1;
++    }
++  }
++
++  switch (reply) {
++  case NBD_REP_ERR_UNSUP:
++    set_error (ENOTSUP, "the operation is not supported by the server%s",
++               msg ? : "");
++      break;
++    case NBD_REP_ERR_POLICY:
++      set_error (0, "server policy prevents the operation%s",
++                 msg ? : "");
++      break;
++    case NBD_REP_ERR_PLATFORM:
++      set_error (0, "the operation is not supported by the server platform%s",
++                 msg ? : "");
++      break;
++    case NBD_REP_ERR_INVALID:
++      set_error (EINVAL, "the server rejected this operation as invalid%s",
++                 msg ? : "");
++      break;
++    case NBD_REP_ERR_TOO_BIG:
++      set_error (EINVAL, "the operation is too large to process%s",
++                 msg ? : "");
++      break;
++    case NBD_REP_ERR_TLS_REQD:
++      set_error (ENOTSUP, "the server requires TLS encryption first%s",
++                 msg ? : "");
++      break;
++    case NBD_REP_ERR_UNKNOWN:
++      set_error (ENOENT, "the server has no export named '%s'%s",
++                 h->export_name, msg ? : "");
++      break;
++    case NBD_REP_ERR_SHUTDOWN:
++      set_error (ESHUTDOWN, "the server is shutting down%s",
++                 msg ? : "");
++      break;
++    case NBD_REP_ERR_BLOCK_SIZE_REQD:
++      set_error (EINVAL, "the server requires specific block sizes%s",
++                 msg ? : "");
++      break;
++    default:
++      set_error (0, "handshake: unknown reply from the server: 0x%" PRIx32 "%s",
++                 reply, msg ? : "");
++    }
++  free (msg);
+ 
+   return 0;
+ }
+-- 
+2.43.0
+
diff --git a/SOURCES/0002-docs-Fix-incorrect-xref-in-libnbd-release-notes-for-.patch b/SOURCES/0002-docs-Fix-incorrect-xref-in-libnbd-release-notes-for-.patch
deleted file mode 100644
index 37101da..0000000
--- a/SOURCES/0002-docs-Fix-incorrect-xref-in-libnbd-release-notes-for-.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-From c39e31b7a20c7dc8aa12c5fa3f1742824e1e0c76 Mon Sep 17 00:00:00 2001
-From: "Richard W.M. Jones" <rjones@redhat.com>
-Date: Thu, 9 Nov 2023 09:40:30 +0000
-Subject: [libnbd PATCH] docs: Fix incorrect xref in libnbd-release-notes for
- 1.18
-Content-type: text/plain
-
-LIBNBD_STRICT_AUTO_FLAG was added to nbd_set_strict_mode(3).
-
-Reported-by: Vera Wu
-(cherry picked from commit 4fef3dbc07e631fce58487d25d991e83bbb424b1)
-Signed-off-by: Eric Blake <eblake@redhat.com>
----
- docs/libnbd-release-notes-1.18.pod | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/docs/libnbd-release-notes-1.18.pod b/docs/libnbd-release-notes-1.18.pod
-index 935fab11..836ebe19 100644
---- a/docs/libnbd-release-notes-1.18.pod
-+++ b/docs/libnbd-release-notes-1.18.pod
-@@ -84,8 +84,8 @@ Golang, OCaml and Python language bindings (Eric Blake).
-
- L<nbd_shutdown(3)> now works correctly when in opt mode (Eric Blake).
-
--L<nbd_set_string(3)> adds C<LIBNBD_STRICT_AUTO_FLAG> which allows the
--client to test how servers behave when the payload length flag is
-+L<nbd_set_strict_mode(3)> adds C<LIBNBD_STRICT_AUTO_FLAG> which allows
-+the client to test how servers behave when the payload length flag is
- adjusted (Eric Blake).
-
- =head2 Protocol
--- 
-2.41.0
-
diff --git a/SOURCES/0002-lib-Don-t-overwrite-error-in-nbd_opt_-go-info.patch b/SOURCES/0002-lib-Don-t-overwrite-error-in-nbd_opt_-go-info.patch
new file mode 100644
index 0000000..65e3a4a
--- /dev/null
+++ b/SOURCES/0002-lib-Don-t-overwrite-error-in-nbd_opt_-go-info.patch
@@ -0,0 +1,38 @@
+From f31e31b32e662d0aadb77bc639308c8a65968886 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Tue, 23 Jul 2024 17:26:39 +0100
+Subject: [PATCH] lib: Don't overwrite error in nbd_opt_{go,info}
+
+We already set the error in handle_reply_error, so don't overwrite
+that here.
+
+(cherry picked from commit 474a4ae6c8d11212a4a8c06ea3e8b3fd97a7e97d)
+---
+ lib/opt.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/lib/opt.c b/lib/opt.c
+index 600265a0..5872dd54 100644
+--- a/lib/opt.c
++++ b/lib/opt.c
+@@ -99,7 +99,7 @@ nbd_unlocked_opt_go (struct nbd_handle *h)
+   if (r == 0 && err) {
+     assert (nbd_internal_is_state_negotiating (get_next_state (h)) ||
+             nbd_internal_is_state_dead (get_next_state (h)));
+-    set_error (err, "server replied with error to opt_go request");
++    /* handle_reply_error already called set_error */
+     return -1;
+   }
+   if (r == 0)
+@@ -122,7 +122,7 @@ nbd_unlocked_opt_info (struct nbd_handle *h)
+   if (r == 0 && err) {
+     assert (nbd_internal_is_state_negotiating (get_next_state (h)) ||
+             nbd_internal_is_state_dead (get_next_state (h)));
+-    set_error (err, "server replied with error to opt_info request");
++    /* handle_reply_error already called set_error */
+     return -1;
+   }
+   return r;
+-- 
+2.43.0
+
diff --git a/SOURCES/0003-generator-Restore-assignment-to-local-err.patch b/SOURCES/0003-generator-Restore-assignment-to-local-err.patch
new file mode 100644
index 0000000..a27e2a7
--- /dev/null
+++ b/SOURCES/0003-generator-Restore-assignment-to-local-err.patch
@@ -0,0 +1,43 @@
+From ff5ee9308e66fe9fd19ea578623c4540f44942d6 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Thu, 25 Jul 2024 13:39:28 +0100
+Subject: [PATCH] generator: Restore assignment to local 'err'
+
+I accidentally removed the assignment of local variable 'err' along
+these paths in commit cf49a49adc ("generator: Print full error in
+handle_reply_error").
+
+Fixes: commit cf49a49adc8abc8c917437db7461ed9956583877
+(cherry picked from commit e75d20b9e19143b1bd0d232fc49cb2e0287f824a)
+---
+ generator/states-newstyle-opt-list.c         | 1 +
+ generator/states-newstyle-opt-meta-context.c | 1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/generator/states-newstyle-opt-list.c b/generator/states-newstyle-opt-list.c
+index 6605ee0a..48559574 100644
+--- a/generator/states-newstyle-opt-list.c
++++ b/generator/states-newstyle-opt-list.c
+@@ -129,6 +129,7 @@ STATE_MACHINE {
+     }
+     debug (h, "unexpected response, possibly the server does not "
+            "support listing exports");
++    err = ENOTSUP;
+     break;
+   }
+ 
+diff --git a/generator/states-newstyle-opt-meta-context.c b/generator/states-newstyle-opt-meta-context.c
+index 3945411e..699e24aa 100644
+--- a/generator/states-newstyle-opt-meta-context.c
++++ b/generator/states-newstyle-opt-meta-context.c
+@@ -272,6 +272,7 @@ STATE_MACHINE {
+     if (opt == h->opt_current) {
+       debug (h, "unexpected response, possibly the server does not "
+              "support meta contexts");
++      err = ENOTSUP;
+       CALL_CALLBACK (h->opt_cb.completion, &err);
+       nbd_internal_free_option (h);
+       SET_NEXT_STATE (%.NEGOTIATING);
+-- 
+2.43.0
+
diff --git a/SOURCES/0003-tests-Check-behavior-of-nbd_set_strict_mode-STRICT_A.patch b/SOURCES/0003-tests-Check-behavior-of-nbd_set_strict_mode-STRICT_A.patch
deleted file mode 100644
index 9208a2f..0000000
--- a/SOURCES/0003-tests-Check-behavior-of-nbd_set_strict_mode-STRICT_A.patch
+++ /dev/null
@@ -1,206 +0,0 @@
-From 32cb9ab9f1701b1a1a826b48f2083cb75adf1e87 Mon Sep 17 00:00:00 2001
-From: Eric Blake <eblake@redhat.com>
-Date: Thu, 9 Nov 2023 20:11:08 -0600
-Subject: [libnbd PATCH] tests: Check behavior of
- nbd_set_strict_mode(STRICT_AUTO_FLAG)
-Content-type: text/plain
-
-While developing extended header support for qemu 8.2, I needed a way
-to make libnbd quickly behave as a non-compliant client to test corner
-cases in qemu's server code; so I wrote commit 5c1dae9236 ("api: Add
-LIBNBD_STRICT_AUTO_FLAG to nbd_set_strict", v1.18.0) to meet my needs.
-However, I failed to codify my manual tests of that bit into a unit
-test for libnbd, until now.  Most sane clients will never call
-nbd_set_strict_mode() in the first place (after all, it is explicitly
-documented as an integration tool, which is how I used it with my qemu
-code development), but it never hurts to make sure we don't break it
-even for the relatively small set of users that would ever use it.
-
-The test added here runs in two parts; if you get a SKIP despite
-having qemu-nbd, then the first part ran successfully before the
-second half gave up due to lack of extended headers in qemu
-(presumably qemu 8.1 or older); if you get a PASS, then both parts
-were run.  However, both parts are inherently fragile, depending on
-behavior known to be in qemu 8.2 - while it is unlikely to change in
-future qemu releases (at least as long as I continue to maintain NBD
-code there), the fact that we are intentionally violating the NBD
-protocol means a different server is within its rights to behave
-differently than qemu 8.2 did.  Hence this test lives in interop/
-rather than tests/ because of its strong ties to a particular qemu.
-
-Signed-off-by: Eric Blake <eblake@redhat.com>
-(cherry picked from commit 54d4426394c372413f55f648d4ad1d21b3395e07)
-Signed-off-by: Eric Blake <eblake@redhat.com>
----
- interop/Makefile.am              |   2 +
- interop/strict-mode-auto-flag.sh | 138 +++++++++++++++++++++++++++++++
- 2 files changed, 140 insertions(+)
- create mode 100755 interop/strict-mode-auto-flag.sh
-
-diff --git a/interop/Makefile.am b/interop/Makefile.am
-index d6485adf..ac12d84a 100644
---- a/interop/Makefile.am
-+++ b/interop/Makefile.am
-@@ -28,6 +28,7 @@ EXTRA_DIST = \
- 	structured-read.sh \
- 	opt-extended-headers.sh \
- 	block-status-payload.sh \
-+	strict-mode-auto-flag.sh \
- 	$(NULL)
-
- TESTS_ENVIRONMENT = \
-@@ -153,6 +154,7 @@ TESTS += \
- 	interop-qemu-block-size.sh \
- 	opt-extended-headers.sh \
- 	block-status-payload.sh \
-+	strict-mode-auto-flag.sh \
- 	$(NULL)
-
- interop_qemu_nbd_SOURCES = \
-diff --git a/interop/strict-mode-auto-flag.sh b/interop/strict-mode-auto-flag.sh
-new file mode 100755
-index 00000000..8f73ea73
---- /dev/null
-+++ b/interop/strict-mode-auto-flag.sh
-@@ -0,0 +1,138 @@
-+#!/usr/bin/env bash
-+# nbd client library in userspace
-+# Copyright Red Hat
-+#
-+# This library is free software; you can redistribute it and/or
-+# modify it under the terms of the GNU Lesser General Public
-+# License as published by the Free Software Foundation; either
-+# version 2 of the License, or (at your option) any later version.
-+#
-+# This library is distributed in the hope that it will be useful,
-+# but WITHOUT ANY WARRANTY; without even the implied warranty of
-+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+# Lesser General Public License for more details.
-+#
-+# You should have received a copy of the GNU Lesser General Public
-+# License along with this library; if not, write to the Free Software
-+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-+
-+# Test effect of AUTO_FLAG bit in set_strict_mode()
-+
-+source ../tests/functions.sh
-+set -e
-+set -x
-+
-+requires truncate --version
-+requires qemu-nbd --version
-+requires nbdsh --version
-+
-+file="strict-mode-auto-flag.file"
-+rm -f $file
-+cleanup_fn rm -f $file
-+
-+truncate -s 1M $file
-+
-+# Unconditional part of test: behavior when extended headers are not in use
-+$VG nbdsh -c '
-+import errno
-+
-+h.set_request_extended_headers(False)
-+args = ["qemu-nbd", "-f", "raw", "'"$file"'"]
-+h.connect_systemd_socket_activation(args)
-+assert h.get_extended_headers_negotiated() is False
-+
-+# STRICT_AUTO_FLAG and STRICT_COMMANDS are on by default
-+flags = h.get_strict_mode()
-+assert flags & nbd.STRICT_AUTO_FLAG
-+assert flags & nbd.STRICT_COMMANDS
-+
-+# Under STRICT_AUTO_FLAG, using or omitting flag does not matter; client
-+# side auto-corrects the flag before passing to server
-+h.pwrite(b"1"*512, 0, 0)
-+h.pwrite(b"2"*512, 0, nbd.CMD_FLAG_PAYLOAD_LEN)
-+
-+# Without STRICT_AUTO_FLAG but still STRICT_COMMANDS, client side now sees
-+# attempts to use the flag as invalid
-+flags = flags & ~nbd.STRICT_AUTO_FLAG
-+h.set_strict_mode(flags)
-+h.pwrite(b"3"*512, 0, 0)
-+stats = h.stats_bytes_sent()
-+try:
-+  h.pwrite(b"4"*512, 0, nbd.CMD_FLAG_PAYLOAD_LEN)
-+  assert False
-+except nbd.Error as e:
-+  assert e.errnum == errno.EINVAL
-+assert stats == h.stats_bytes_sent()
-+
-+# Warning: fragile test ahead.  Without STRICT_COMMANDS, we send unexpected
-+# flag to qemu, and expect failure. For qemu <= 8.1, this is safe (those
-+# versions did not know the flag, and correctly reject unknown flags with
-+# NBD_EINVAL). For qemu 8.2, this also works (qemu knows the flag, but warns
-+# that we were not supposed to send it without extended headers). But if
-+# future qemu versions change to start silently ignoring the flag (after all,
-+# a write command obviously has a payload even without extended headers, so
-+# the flag is redundant for NBD_CMD_WRITE), then we may need to tweak this.
-+flags = flags & ~nbd.STRICT_COMMANDS
-+h.set_strict_mode(flags)
-+h.pwrite(b"5"*512, 0, 0)
-+stats = h.stats_bytes_sent()
-+try:
-+  h.pwrite(b"6"*512, 0, nbd.CMD_FLAG_PAYLOAD_LEN)
-+  print("Did newer qemu change behavior?")
-+  assert False
-+except nbd.Error as e:
-+  assert e.errnum == errno.EINVAL
-+assert stats < h.stats_bytes_sent()
-+
-+h.shutdown()
-+'
-+
-+# Conditional part of test: only run if qemu supports extended headers
-+requires nbdinfo --has extended-headers -- [ qemu-nbd -r -f raw "$file" ]
-+$VG nbdsh -c '
-+import errno
-+
-+args = ["qemu-nbd", "-f", "raw", "'"$file"'"]
-+h.connect_systemd_socket_activation(args)
-+assert h.get_extended_headers_negotiated() is True
-+
-+# STRICT_AUTO_FLAG and STRICT_COMMANDS are on by default
-+flags = h.get_strict_mode()
-+assert flags & nbd.STRICT_AUTO_FLAG
-+assert flags & nbd.STRICT_COMMANDS
-+
-+# Under STRICT_AUTO_FLAG, using or omitting flag does not matter; client
-+# side auto-corrects the flag before passing to server
-+h.pwrite(b"1"*512, 0, 0)
-+h.pwrite(b"2"*512, 0, nbd.CMD_FLAG_PAYLOAD_LEN)
-+
-+# Without STRICT_AUTO_FLAG but still STRICT_COMMANDS, client side now sees
-+# attempts to omit the flag as invalid
-+flags = flags & ~nbd.STRICT_AUTO_FLAG
-+h.set_strict_mode(flags)
-+h.pwrite(b"3"*512, 0, nbd.CMD_FLAG_PAYLOAD_LEN)
-+stats = h.stats_bytes_sent()
-+try:
-+  h.pwrite(b"4"*512, 0, 0)
-+  assert False
-+except nbd.Error as e:
-+  assert e.errnum == errno.EINVAL
-+assert stats == h.stats_bytes_sent()
-+
-+# Warning: fragile test ahead.  Without STRICT_COMMANDS, omitting the flag
-+# is a protocol violation. qemu 8.2 silently ignores the violation; but a
-+# future qemu might start failing the command, at which point we would need
-+# to tweak this part of the test.
-+flags = flags & ~nbd.STRICT_COMMANDS
-+h.set_strict_mode(flags)
-+h.pwrite(b"5"*512, 0, nbd.CMD_FLAG_PAYLOAD_LEN)
-+stats = h.stats_bytes_sent()
-+try:
-+  h.pwrite(b"6"*512, 0, 0)
-+except nbd.Error:
-+  print("Did newer qemu change behavior?")
-+  assert False
-+assert stats < h.stats_bytes_sent()
-+
-+h.shutdown()
-+'
--- 
-2.41.0
-
diff --git a/SOURCES/0004-generator-states-newstyle.c-Quote-untrusted-string-f.patch b/SOURCES/0004-generator-states-newstyle.c-Quote-untrusted-string-f.patch
new file mode 100644
index 0000000..257230e
--- /dev/null
+++ b/SOURCES/0004-generator-states-newstyle.c-Quote-untrusted-string-f.patch
@@ -0,0 +1,175 @@
+From 923357f49704d55cd74dc5334a12a7089825ff57 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Thu, 25 Jul 2024 13:25:34 +0100
+Subject: [PATCH] generator/states-newstyle.c: Quote untrusted string from the
+ server
+
+Updates: commit cf49a49adc8abc8c917437db7461ed9956583877
+(cherry picked from commit 5dbfc418cb6176102634acea2256b2335520159c)
+---
+ generator/states-newstyle.c | 124 ++++++++++++++++++++----------------
+ 1 file changed, 68 insertions(+), 56 deletions(-)
+
+diff --git a/generator/states-newstyle.c b/generator/states-newstyle.c
+index 6c7cc45c..8c483bd2 100644
+--- a/generator/states-newstyle.c
++++ b/generator/states-newstyle.c
+@@ -18,6 +18,7 @@
+ 
+ #include <assert.h>
+ 
++#include "ascii-ctype.h"
+ #include "internal.h"
+ 
+ /* Common code for parsing a reply to NBD_OPT_*. */
+@@ -88,80 +89,91 @@ prepare_for_reply_payload (struct nbd_handle *h, uint32_t opt)
+ static int
+ handle_reply_error (struct nbd_handle *h)
+ {
+-  uint32_t len;
+   uint32_t reply;
+-  char *msg = NULL;
++  uint32_t replylen;
++  FILE *fp;
++  char *s = NULL;
++  size_t len = 0;
++  int err = 0;
+ 
+-  len = be32toh (h->sbuf.or.option_reply.replylen);
+   reply = be32toh (h->sbuf.or.option_reply.reply);
+   if (!NBD_REP_IS_ERR (reply)) {
+     set_error (0, "handshake: unexpected option reply type %d", reply);
+     return -1;
+   }
+ 
++  replylen = be32toh (h->sbuf.or.option_reply.replylen);
+   assert (NBD_MAX_STRING < sizeof h->sbuf.or.payload);
+-  if (len > NBD_MAX_STRING) {
++  if (replylen > NBD_MAX_STRING) {
+     set_error (0, "handshake: option error string too long");
+     return -1;
+   }
+ 
+-  /* Decode expected errors into a nicer string.
+-   *
+-   * XXX Note this string comes directly from the server, and most
+-   * libnbd users simply print the error using 'fprintf'.  We really
+-   * ought to quote this string somehow, but we don't have a useful
+-   * function for that.
+-   */
+-  if (len > 0) {
+-    if (asprintf (&msg, ": %.*s",
+-                  (int)len, h->sbuf.or.payload.err_msg) == -1) {
+-      set_error (errno, "asprintf");
+-      return -1;
+-    }
++  /* Decode expected errors into a nicer string. */
++  fp = open_memstream (&s, &len);
++  if (fp == NULL) {
++    set_error (errno, "open_memstream");
++    return -1;
+   }
+ 
+   switch (reply) {
+   case NBD_REP_ERR_UNSUP:
+-    set_error (ENOTSUP, "the operation is not supported by the server%s",
+-               msg ? : "");
+-      break;
+-    case NBD_REP_ERR_POLICY:
+-      set_error (0, "server policy prevents the operation%s",
+-                 msg ? : "");
+-      break;
+-    case NBD_REP_ERR_PLATFORM:
+-      set_error (0, "the operation is not supported by the server platform%s",
+-                 msg ? : "");
+-      break;
+-    case NBD_REP_ERR_INVALID:
+-      set_error (EINVAL, "the server rejected this operation as invalid%s",
+-                 msg ? : "");
+-      break;
+-    case NBD_REP_ERR_TOO_BIG:
+-      set_error (EINVAL, "the operation is too large to process%s",
+-                 msg ? : "");
+-      break;
+-    case NBD_REP_ERR_TLS_REQD:
+-      set_error (ENOTSUP, "the server requires TLS encryption first%s",
+-                 msg ? : "");
+-      break;
+-    case NBD_REP_ERR_UNKNOWN:
+-      set_error (ENOENT, "the server has no export named '%s'%s",
+-                 h->export_name, msg ? : "");
+-      break;
+-    case NBD_REP_ERR_SHUTDOWN:
+-      set_error (ESHUTDOWN, "the server is shutting down%s",
+-                 msg ? : "");
+-      break;
+-    case NBD_REP_ERR_BLOCK_SIZE_REQD:
+-      set_error (EINVAL, "the server requires specific block sizes%s",
+-                 msg ? : "");
+-      break;
+-    default:
+-      set_error (0, "handshake: unknown reply from the server: 0x%" PRIx32 "%s",
+-                 reply, msg ? : "");
++    err = ENOTSUP;
++    fprintf (fp, "the operation is not supported by the server");
++    break;
++  case NBD_REP_ERR_POLICY:
++    fprintf (fp, "server policy prevents the operation");
++    break;
++  case NBD_REP_ERR_PLATFORM:
++    fprintf (fp, "the operation is not supported by the server platform");
++    break;
++  case NBD_REP_ERR_INVALID:
++    err = EINVAL;
++    fprintf (fp, "the server rejected this operation as invalid");
++    break;
++  case NBD_REP_ERR_TOO_BIG:
++    err = EINVAL;
++    fprintf (fp, "the operation is too large to process");
++    break;
++  case NBD_REP_ERR_TLS_REQD:
++    err = ENOTSUP;
++    fprintf (fp, "the server requires TLS encryption first");
++    break;
++  case NBD_REP_ERR_UNKNOWN:
++    err = ENOENT;
++    fprintf (fp, "the server has no export named '%s'", h->export_name);
++    break;
++  case NBD_REP_ERR_SHUTDOWN:
++    err = ESHUTDOWN;
++    fprintf (fp, "the server is shutting down");
++    break;
++  case NBD_REP_ERR_BLOCK_SIZE_REQD:
++    err = EINVAL;
++    fprintf (fp, "the server requires specific block sizes");
++    break;
++  default:
++    fprintf (fp, "handshake: unknown reply from the server: 0x%" PRIx32,
++             reply);
++  }
++
++  if (replylen > 0) {
++    /* Since this message comes from the server, take steps to quote it. */
++    uint32_t i;
++    const char *msg = h->sbuf.or.payload.err_msg;
++
++    fprintf (fp, ": ");
++    for (i = 0; i < replylen; ++i) {
++      if (ascii_isprint (msg[i]))
++        fputc (msg[i], fp);
++      else
++        fprintf (fp, "\\x%02x", msg[i]);
+     }
+-  free (msg);
++  }
++
++  fclose (fp);
++
++  set_error (err, "%s", s);
++  free (s);
+ 
+   return 0;
+ }
+-- 
+2.43.0
+
diff --git a/SOURCES/0005-generator-states-newstyle.c-Don-t-sign-extend-escape.patch b/SOURCES/0005-generator-states-newstyle.c-Don-t-sign-extend-escape.patch
new file mode 100644
index 0000000..2fdd384
--- /dev/null
+++ b/SOURCES/0005-generator-states-newstyle.c-Don-t-sign-extend-escape.patch
@@ -0,0 +1,27 @@
+From a8e554e53ce8150286e06f4afd578ab52e2f03d9 Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Thu, 25 Jul 2024 15:48:46 +0100
+Subject: [PATCH] generator/states-newstyle.c: Don't sign extend escaped chars
+
+Fixes: commit 5dbfc418cb6176102634acea2256b2335520159c
+(cherry picked from commit 0d6c6bbb3386de3b60ab6c4831045f2b1896051b)
+---
+ generator/states-newstyle.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/generator/states-newstyle.c b/generator/states-newstyle.c
+index 8c483bd2..1e026a8a 100644
+--- a/generator/states-newstyle.c
++++ b/generator/states-newstyle.c
+@@ -159,7 +159,7 @@ handle_reply_error (struct nbd_handle *h)
+   if (replylen > 0) {
+     /* Since this message comes from the server, take steps to quote it. */
+     uint32_t i;
+-    const char *msg = h->sbuf.or.payload.err_msg;
++    const unsigned char *msg = (unsigned char *) h->sbuf.or.payload.err_msg;
+ 
+     fprintf (fp, ": ");
+     for (i = 0; i < replylen; ++i) {
+-- 
+2.43.0
+
diff --git a/SOURCES/copy-patches.sh b/SOURCES/copy-patches.sh
index 991798c..c045688 100755
--- a/SOURCES/copy-patches.sh
+++ b/SOURCES/copy-patches.sh
@@ -6,7 +6,7 @@ set -e
 # directory.  Use it like this:
 #   ./copy-patches.sh
 
-rhel_version=9.4
+rhel_version=9.5
 
 # Check we're in the right directory.
 if [ ! -f libnbd.spec ]; then
diff --git a/SOURCES/libnbd-1.18.1.tar.gz.sig b/SOURCES/libnbd-1.18.1.tar.gz.sig
deleted file mode 100644
index 7bd7214..0000000
--- a/SOURCES/libnbd-1.18.1.tar.gz.sig
+++ /dev/null
@@ -1,17 +0,0 @@
------BEGIN PGP SIGNATURE-----
-
-iQJFBAABCAAvFiEE93dPsa0HSn6Mh2fqkXOPc+G3aKAFAmU2izoRHHJpY2hAYW5u
-ZXhpYS5vcmcACgkQkXOPc+G3aKA+txAAkLeWdvH2ryibEyqMeyejvh9vMgQO5I46
-LaygI8jDi+XG+rGy7imiwIxxWvyCZI3y2U5MFudLZoFi+gCyVAC+LeBxjF41NBGz
-fbgwFaQHrCbxyLlsj9OcR6M0+EPU8NXXPPGgXZNcnf7tHNZkTO0OGS9chml0wXHA
-Zx9WheHl6wbLTVIAtLWOJqzRQj80RlcPC+De1wZL+WFMPMkfF8L8K5FRNsfeTIXn
-l31d1R0g5QOMTTqBiKE2iopPmVmA5uC/adWCuqF3mzzjzCkHp+Ux/Ys99tkCETrU
-jUuHgJ+1pYjn4Lmt/HUwXQZD3L+RkNAWWQziY/3ejK31tGxZqR/XTwq5RPrc6Qs1
-/zuoWvSWJZZo9yvX1Iq2RQAaZF5724V/svm+HgaCakaK8EJEj6sntM0OhAl2pRC4
-G45Kb2o7k016WgL8plNOlrbHNxaruBcPrkFYDMoyy3KLnWaw3OYMARTD5w/Pd4dC
-CJa3tIXIKedhXw9xDtEWfxiKIHfO+LBHBMjpW9KzP/oxE2akmcJZJT+JNpsrpdzV
-O6mbVDPedWd5LQQ1bNmwzxkCsMEC9HFhVbCaTuYuSXe/By04Norns4xyEJyDXlG/
-QqFgEUS8R+V9xwYHoAPg5RUmycXubSmm64iTAQNqc46QsxeP0Va7gpbrPLe5qVk/
-irUsxdBhGIM=
-=pgmp
------END PGP SIGNATURE-----
diff --git a/SOURCES/libnbd-1.20.2.tar.gz.sig b/SOURCES/libnbd-1.20.2.tar.gz.sig
new file mode 100644
index 0000000..80a5dcf
--- /dev/null
+++ b/SOURCES/libnbd-1.20.2.tar.gz.sig
@@ -0,0 +1,17 @@
+-----BEGIN PGP SIGNATURE-----
+
+iQJFBAABCAAvFiEE93dPsa0HSn6Mh2fqkXOPc+G3aKAFAmZ7KY8RHHJpY2hAYW5u
+ZXhpYS5vcmcACgkQkXOPc+G3aKAP7A/9EzaUWFPP1GDCrpfvVods7F+8DN87O/aZ
+mTzw59HNZVz42Yw0cM8MAEckgnpMdT7d64m6E1lx8fxIYGaO+c4r+VeZfYlsZIam
+HFzTe4UYwdjZT1HcR9njSkdL/6th5ZMM6NK+RI3MBmQAc5TfFxPUsXbHSAfLgclb
+v3yh2F0x6gnSBMxdVVYGha/eGegLZONGhZIxVYlVr0VlFrpy3Lo6+4mxIw5Sbery
+cY+LxKwpyx1Gj01qZS+muub7kCXefwZggf15F1NqaQNz6tzriwXpW1yrZGayERmT
+s11htXEvqSI3ViO3Rf/paq5vKwo5v7AMLHI7cv2dzrmNglLrEsY4GywlHdgbDYLh
+7qY6/35WzQwCcCWlvXP3K4SIkauH5lVR0KMsdU+idxpodqtHSTQN8f0z1vSSf5We
+wilBzw1LPiD55Dz7/9AIbjU/w/iUREsZceplbis1DFsVxf+cVZTtwx0LJn2enKTc
+O61LVcV9FDB7EJIdTQfFr9WJTR+6gfSF5R7H4kMX8gZHucoUruoXA+M4fqV8aRHc
+5lrzgnsVN/GatF5R63yt6dSByQGqnyhpLynoYWCht64PRglb7XekGuT9AR3m85VP
+hTu1fZsLfmVl9iJjc47/c5CKq9mAhoicDiCVCgTidCq5O9SmI2HgmCPUH/nd2+Fc
+uB2geCRdnZ0=
+=dUDc
+-----END PGP SIGNATURE-----
diff --git a/SPECS/libnbd.spec b/SPECS/libnbd.spec
index b523ea2..a937df8 100644
--- a/SPECS/libnbd.spec
+++ b/SPECS/libnbd.spec
@@ -1,15 +1,27 @@
+# i686 no longer has any kind of OCaml compiler, not even ocamlc.
+%ifnarch %{ix86}
+%global have_ocaml 1
+%endif
+
+# No ublk in RHEL 9.
+%if !0%{?rhel}
+%global have_ublk 1
+%endif
+
+# No nbd.ko in RHEL 9.
+%if !0%{?rhel}
+%global have_nbd_ko 1
+%endif
+
 # If we should verify tarball signature with GPGv2.
 %global verify_tarball_signature 1
 
-# If there are patches which touch autotools files, set this to 1.
-%global patches_touch_autotools 1
-
 # The source directory.
-%global source_directory 1.18-stable
+%global source_directory 1.20-stable
 
 Name:           libnbd
-Version:        1.18.1
-Release:        3%{?dist}
+Version:        1.20.2
+Release:        2%{?dist}
 Summary:        NBD client library in userspace
 
 License:        LGPL-2.0-or-later AND BSD-3-Clause
@@ -26,21 +38,21 @@ Source2:       libguestfs.keyring
 Source3:        copy-patches.sh
 
 # Patches are stored in the upstream repository:
-# https://gitlab.com/nbdkit/libnbd/-/commits/rhel-9.4/
+# https://gitlab.com/nbdkit/libnbd/-/commits/rhel-9.5/
 
-# Patches.
-Patch0001:     0001-generator-Fix-assertion-in-ext-mode-BLOCK_STATUS-CVE.patch
-Patch0002:     0002-docs-Fix-incorrect-xref-in-libnbd-release-notes-for-.patch
-Patch0003:     0003-tests-Check-behavior-of-nbd_set_strict_mode-STRICT_A.patch
-
-%if 0%{patches_touch_autotools}
-BuildRequires: autoconf, automake, libtool
-%endif
+Patch0001:     0001-generator-Print-full-error-in-handle_reply_error.patch
+Patch0002:     0002-lib-Don-t-overwrite-error-in-nbd_opt_-go-info.patch
+Patch0003:     0003-generator-Restore-assignment-to-local-err.patch
+Patch0004:     0004-generator-states-newstyle.c-Quote-untrusted-string-f.patch
+Patch0005:     0005-generator-states-newstyle.c-Don-t-sign-extend-escape.patch
 
 %if 0%{verify_tarball_signature}
 BuildRequires:  gnupg2
 %endif
 
+# For rebuilding autoconf cruft.
+BuildRequires:  autoconf, automake, libtool
+
 # For the core library.
 BuildRequires:  gcc
 BuildRequires:  make
@@ -51,7 +63,7 @@ BuildRequires:  libxml2-devel
 # For nbdfuse.
 BuildRequires:  fuse3, fuse3-devel
 
-%if !0%{?rhel}
+%if 0%{?have_ublk}
 # For nbdublk
 BuildRequires:  liburing-devel >= 2.2
 BuildRequires:  ubdsrv-devel >= 1.0-3.rc6
@@ -60,7 +72,7 @@ BuildRequires:  ubdsrv-devel >= 1.0-3.rc6
 # For the Python 3 bindings.
 BuildRequires:  python3-devel
 
-%ifnarch %{ix86}
+%if 0%{?have_ocaml}
 # For the OCaml bindings.
 BuildRequires:  ocaml
 BuildRequires:  ocaml-findlib-devel
@@ -79,7 +91,7 @@ BuildRequires:  gcc-c++
 BuildRequires:  gnutls-utils
 BuildRequires:  iproute
 BuildRequires:  jq
-%if !0%{?rhel}
+%if 0%{?have_nbd_ko}
 BuildRequires:  nbd
 %endif
 BuildRequires:  util-linux
@@ -100,7 +112,7 @@ BuildRequires:  nbdkit-sh-plugin
 BuildRequires:  nbdkit-sparse-random-plugin
 %endif
 
-%ifnarch %{ix86}
+%if 0%{?have_ocaml}
 # The OCaml runtime system does not provide this symbol
 %global __ocaml_requires_opts -x Stdlib__Callback
 %endif
@@ -136,7 +148,7 @@ Requires:       %{name}%{?_isa} = %{version}-%{release}
 This package contains development headers for %{name}.
 
 
-%ifnarch %{ix86}
+%if 0%{?have_ocaml}
 %package -n ocaml-%{name}
 Summary:        OCaml language bindings for %{name}
 Requires:       %{name}%{?_isa} = %{version}-%{release}
@@ -182,7 +194,7 @@ Recommends:     fuse3
 This package contains FUSE support for %{name}.
 
 
-%if !0%{?rhel}
+%if 0%{?have_ublk}
 %package -n nbdublk
 Summary:        Userspace NBD block device
 Requires:       %{name}%{?_isa} = %{version}-%{release}
@@ -215,25 +227,30 @@ for %{name}.
 %{gpgverify} --keyring='%{SOURCE2}' --signature='%{SOURCE1}' --data='%{SOURCE0}'
 %endif
 %autosetup -p1
-%if 0%{patches_touch_autotools}
 autoreconf -i
-%endif
 
 
 %build
 %configure \
     --disable-static \
     --with-tls-priority=@LIBNBD,SYSTEM \
+    --with-bash-completions \
     PYTHON=%{__python3} \
     --enable-python \
-%ifnarch %{ix86}
+%if 0%{?have_ocaml}
     --enable-ocaml \
 %else
     --disable-ocaml \
 %endif
     --enable-fuse \
     --disable-golang \
-    --disable-rust
+    --disable-rust \
+%if 0%{?have_ublk}
+    --enable-ublk \
+%else
+    --disable-ublk \
+%endif
+    %{nil}
 
 make %{?_smp_mflags}
 
@@ -247,16 +264,11 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
 # Delete the golang man page since we're not distributing the bindings.
 rm $RPM_BUILD_ROOT%{_mandir}/man3/libnbd-golang.3*
 
-%ifarch %{ix86}
+%if !0%{?have_ocaml}
 # Delete the OCaml man page on i686.
 rm $RPM_BUILD_ROOT%{_mandir}/man3/libnbd-ocaml.3*
 %endif
 
-%if 0%{?rhel}
-# Delete nbdublk on RHEL.
-rm $RPM_BUILD_ROOT%{_datadir}/bash-completion/completions/nbdublk
-%endif
-
 
 %check
 function skip_test ()
@@ -268,12 +280,6 @@ function skip_test ()
     done
 }
 
-# interop/structured-read.sh fails with the old qemu-nbd in Fedora 29,
-# so disable it there.
-%if 0%{?fedora} <= 29
-skip_test interop/structured-read.sh
-%endif
-
 # interop/interop-qemu-storage-daemon.sh fails in RHEL 9 because of
 # this bug in qemu:
 # https://lists.nongnu.org/archive/html/qemu-devel/2021-03/threads.html#03544
@@ -324,7 +330,7 @@ make %{?_smp_mflags} check || {
 %{_mandir}/man3/nbd_*.3*
 
 
-%ifnarch %{ix86}
+%if 0%{?have_ocaml}
 %files -n ocaml-%{name}
 %dir %{_libdir}/ocaml/nbd
 %{_libdir}/ocaml/nbd/META
@@ -363,7 +369,7 @@ make %{?_smp_mflags} check || {
 %{_mandir}/man1/nbdfuse.1*
 
 
-%if !0%{?rhel}
+%if 0%{?have_ublk}
 %files -n nbdublk
 %{_bindir}/nbdublk
 %{_mandir}/man1/nbdublk.1*
@@ -383,6 +389,18 @@ make %{?_smp_mflags} check || {
 
 
 %changelog
+* Fri Jul 26 2024 Richard W.M. Jones <rjones@redhat.com> - 1.20.2-2
+- Rebase to libnbd 1.20.2
+  resolves: RHEL-31883
+- Fix multiple flaws in TLS server certificate checking
+  resolves: RHEL-49801
+- Print full NBD error from server
+  resolves: RHEL-50665
+
+* Tue Apr 09 2024 Miroslav Rezanina <mrezanin@redhat.com> - 1.20.0-1
+- Rebase to 1.20.0
+  resolves: RHEL-31883
+
 * Mon Nov 13 2023 Eric Blake <eblake@redhat.com> - 1.18.1-3
 - Backport unit test of recent libnbd API addition
   resolves: RHEL-16292