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Add all patches upstream since 1.1.11 (fixes RHBZ#1336758).

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- Reenable tests on x86.
This commit is contained in:
Richard W.M. Jones 2016-05-19 12:18:38 +01:00
parent 06bdcafa60
commit 13cfa83add
11 changed files with 731 additions and 19 deletions
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4
0001-Add-mandir-to-dump-config-output.patch
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@ -1,7 +1,7 @@
From 5294b7d8cc011f8b5e068aad744f612df7414a82 Mon Sep 17 00:00:00 2001 From 5294b7d8cc011f8b5e068aad744f612df7414a82 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com> From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Sat, 31 Oct 2015 13:24:52 +0000 Date: Sat, 31 Oct 2015 13:24:52 +0000
Subject: [PATCH 1/5] Add mandir to --dump-config output. Subject: [PATCH 01/10] Add mandir to --dump-config output.
This is useful for external plugins that want to install This is useful for external plugins that want to install
a man page. a man page.
@ -35,5 +35,5 @@ index cd676c0..1248a8e 100644
printf ("%s=%s\n", "plugindir", plugindir); printf ("%s=%s\n", "plugindir", plugindir);
printf ("%s=%s\n", "sbindir", sbindir); printf ("%s=%s\n", "sbindir", sbindir);
-- --
2.5.0 2.7.4

4
0002-Update-TODO.patch
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@ -1,7 +1,7 @@
From 4b562134c3dad1a84aa92c1658e72046569e1570 Mon Sep 17 00:00:00 2001 From 4b562134c3dad1a84aa92c1658e72046569e1570 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com> From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 11 Jan 2016 15:34:57 +0000 Date: Mon, 11 Jan 2016 15:34:57 +0000
Subject: [PATCH 2/5] Update TODO. Subject: [PATCH 02/10] Update TODO.
--- ---
TODO | 5 +++++ TODO | 5 +++++
@ -31,5 +31,5 @@ index bcf2276..a05aa5b 100644
NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS and NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS and
NBDKIT_THREAD_MODEL_PARALLEL are the same, because we handle NBDKIT_THREAD_MODEL_PARALLEL are the same, because we handle
-- --
2.5.0 2.7.4

4
0003-Add-support-for-newstyle-NBD-protocol-RHBZ-1297100.patch
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@ -1,7 +1,7 @@
From f93807114634d58ca2ef0d64f7637ebd87e48a50 Mon Sep 17 00:00:00 2001 From f93807114634d58ca2ef0d64f7637ebd87e48a50 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com> From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 11 Jan 2016 17:08:51 +0000 Date: Mon, 11 Jan 2016 17:08:51 +0000
Subject: [PATCH 3/5] Add support for newstyle NBD protocol (RHBZ#1297100). Subject: [PATCH 03/10] Add support for newstyle NBD protocol (RHBZ#1297100).
--- ---
.gitignore | 1 + .gitignore | 1 +
@ -756,5 +756,5 @@ index 7abf5af..c369150 100644
/* Declare program_name. */ /* Declare program_name. */
#if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME == 1 #if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME == 1
-- --
2.5.0 2.7.4

4
0004-xz-Fix-various-printf-warnings-on-32-bit.patch
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@ -1,7 +1,7 @@
From 0759d15aa3649d088eeae91fcd174d0b37e1ccde Mon Sep 17 00:00:00 2001 From 0759d15aa3649d088eeae91fcd174d0b37e1ccde Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com> From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 11 Jan 2016 19:02:53 +0000 Date: Mon, 11 Jan 2016 19:02:53 +0000
Subject: [PATCH 4/5] xz: Fix various printf warnings on 32 bit. Subject: [PATCH 04/10] xz: Fix various printf warnings on 32 bit.
xzfile.c: In function 'xzfile_read_block': xzfile.c: In function 'xzfile_read_block':
xzfile.c:456:19: warning: format '%zu' expects argument of type 'size_t', but argument 2 has type 'uint64_t {aka long long unsigned int}' [-Wformat=] xzfile.c:456:19: warning: format '%zu' expects argument of type 'size_t', but argument 2 has type 'uint64_t {aka long long unsigned int}' [-Wformat=]
@ -45,5 +45,5 @@ index fcc2937..3633099 100644
*size_rtn); *size_rtn);
goto err1; goto err1;
-- --
2.5.0 2.7.4

4
0005-ocaml-Avoid-race-when-building-NBDKit.cmi.patch
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@ -1,7 +1,7 @@
From b6db2f65596470492f0ad76d1ed63ddb98b17167 Mon Sep 17 00:00:00 2001 From b6db2f65596470492f0ad76d1ed63ddb98b17167 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com> From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 11 Jan 2016 19:46:37 +0000 Date: Mon, 11 Jan 2016 19:46:37 +0000
Subject: [PATCH 5/5] ocaml: Avoid race when building NBDKit.cmi. Subject: [PATCH 05/10] ocaml: Avoid race when building NBDKit.cmi.
If both the NBDKit.cmi and NBDKit.cmx builds run in parallel, both If both the NBDKit.cmi and NBDKit.cmx builds run in parallel, both
will try to build NBDKit.cmi, resulting in a corrupt NBDKit.cmi file. will try to build NBDKit.cmi, resulting in a corrupt NBDKit.cmi file.
@ -24,5 +24,5 @@ index d4776b3..f63ba33 100644
NBDKit.o: NBDKit.cmx NBDKit.o: NBDKit.cmx
-- --
2.5.0 2.7.4

154
0006-Test-the-o-oldstyle-command-line-option.patch Normal file
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@ -0,0 +1,154 @@
From 1c359d1140fee575cf478e2b4bf0c5ca0af9d05e Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 11 Jan 2016 20:34:28 +0000
Subject: [PATCH 06/10] Test the -o (oldstyle) command line option.
---
.gitignore | 1 +
tests/Makefile.am | 8 ++++
tests/test-oldstyle.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 111 insertions(+)
create mode 100644 tests/test-oldstyle.c
diff --git a/.gitignore b/.gitignore
index 9ea072f..bc151ca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,6 +46,7 @@ Makefile.in
/tests/test-newstyle
/tests/test-ocaml
/tests/test-ocaml-plugin.so
+/tests/test-oldstyle
/tests/test-perl
/tests/test-python
/tests/test-streaming
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 8d27032..1e6114c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -111,6 +111,14 @@ test_newstyle_SOURCES = test-newstyle.c test.h
test_newstyle_CFLAGS = $(WARNINGS_CFLAGS) $(LIBGUESTFS_CFLAGS)
test_newstyle_LDADD = libtest.la $(LIBGUESTFS_LIBS)
+# oldstyle protocol test.
+check_PROGRAMS += test-oldstyle
+TESTS += test-oldstyle
+
+test_oldstyle_SOURCES = test-oldstyle.c test.h
+test_oldstyle_CFLAGS = $(WARNINGS_CFLAGS) $(LIBGUESTFS_CFLAGS)
+test_oldstyle_LDADD = libtest.la $(LIBGUESTFS_LIBS)
+
# gzip plugin test.
if HAVE_ZLIB
if HAVE_GUESTFISH
diff --git a/tests/test-oldstyle.c b/tests/test-oldstyle.c
new file mode 100644
index 0000000..d809a0c
--- /dev/null
+++ b/tests/test-oldstyle.c
@@ -0,0 +1,102 @@
+/* nbdkit
+ * Copyright (C) 2013-2016 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <guestfs.h>
+
+#include "test.h"
+
+int
+main (int argc, char *argv[])
+{
+ guestfs_h *g;
+ int r;
+ char *data;
+ size_t i, size;
+
+ if (test_start_nbdkit ("-o", NBDKIT_PLUGIN ("file"), "file=file-data",
+ NULL) == -1)
+ exit (EXIT_FAILURE);
+
+ g = guestfs_create ();
+ if (g == NULL) {
+ perror ("guestfs_create");
+ exit (EXIT_FAILURE);
+ }
+
+ /* Using exportname = "" causes qemu to use the oldstyle protocol. */
+ r = guestfs_add_drive_opts (g, "",
+ GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
+ GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "nbd",
+ GUESTFS_ADD_DRIVE_OPTS_SERVER, server,
+ -1);
+ if (r == -1)
+ exit (EXIT_FAILURE);
+
+ if (guestfs_launch (g) == -1)
+ exit (EXIT_FAILURE);
+
+ /* Check the data in the file is \x01-\x08 repeated 512 times. */
+ data = guestfs_pread_device (g, "/dev/sda", 8 * 512, 0, &size);
+ if (!data)
+ exit (EXIT_FAILURE);
+ if (size != 8 * 512) {
+ fprintf (stderr, "%s FAILED: unexpected size (actual: %zu, expected: 512)\n",
+ program_name, size);
+ exit (EXIT_FAILURE);
+ }
+
+ for (i = 0; i < 512 * 8; i += 8) {
+ if (data[i] != 1 || data[i+1] != 2 ||
+ data[i+2] != 3 || data[i+3] != 4 ||
+ data[i+4] != 5 || data[i+5] != 6 ||
+ data[i+6] != 7 || data[i+7] != 8) {
+ fprintf (stderr, "%s FAILED: unexpected data returned at offset %zu\n",
+ program_name, i);
+ exit (EXIT_FAILURE);
+ }
+ }
+
+ free (data);
+
+ guestfs_close (g);
+ exit (EXIT_SUCCESS);
+}
--
2.7.4

116
0007-protocol-Send-limited-range-of-errno-values-to-the-c.patch Normal file
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@ -0,0 +1,116 @@
From f141228d1b6baddadcd516137d76b3d852af8cde Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 12 Jan 2016 12:16:48 +0000
Subject: [PATCH 07/10] protocol: Send limited range of errno values to the
client.
See the proposal here:
http://article.gmane.org/gmane.linux.drivers.nbd.general/3154
This implementation is based on Paolo Bonzini's for qemu-nbd:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ca4414804114fd0095b317785bc0b51862e62ebb
---
TODO | 6 ------
src/connections.c | 36 +++++++++++++++++++++++++++++++++++-
src/protocol.h | 12 +++++++++++-
3 files changed, 46 insertions(+), 8 deletions(-)
diff --git a/TODO b/TODO
index d39e64c..177a07c 100644
--- a/TODO
+++ b/TODO
@@ -1,9 +1,3 @@
-* There is a proposal to narrow the range of possible errnos that the
- server can return, and also to encode them in an OS-independent way.
- See: http://article.gmane.org/gmane.linux.drivers.nbd.general/3154
- Implemented in QEMU already:
- http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ca4414804114fd0095b317785bc0b51862e62ebb
-
* Can we do language bindings using #!'s?
You would enter:
nbdkit foo [args]
diff --git a/src/connections.c b/src/connections.c
index 6bdf4ef..f0a7662 100644
--- a/src/connections.c
+++ b/src/connections.c
@@ -639,6 +639,31 @@ skip_over_write_buffer (int sock, size_t count)
}
}
+/* Convert a system errno to an NBD_E* error code. */
+static int
+nbd_errno (int error)
+{
+ switch (error) {
+ case 0:
+ return NBD_SUCCESS;
+ case EPERM:
+ return NBD_EPERM;
+ case EIO:
+ return NBD_EIO;
+ case ENOMEM:
+ return NBD_ENOMEM;
+#ifdef EDQUOT
+ case EDQUOT:
+#endif
+ case EFBIG:
+ case ENOSPC:
+ return NBD_ENOSPC;
+ case EINVAL:
+ default:
+ return NBD_EINVAL;
+ }
+}
+
static int
recv_request_send_reply (struct connection *conn)
{
@@ -722,7 +747,16 @@ recv_request_send_reply (struct connection *conn)
send_reply:
reply.magic = htobe32 (NBD_REPLY_MAGIC);
reply.handle = request.handle;
- reply.error = htobe32 (error);
+ reply.error = htobe32 (nbd_errno (error));
+
+ if (error != 0) {
+ /* Since we're about to send only the limited NBD_E* errno to the
+ * client, don't lose the information about what really happened
+ * on the server side. Make sure there is a way for the operator
+ * to retrieve the real error.
+ */
+ debug ("sending error reply: %s", strerror (error));
+ }
r = xwrite (conn->sockout, &reply, sizeof reply);
if (r == -1) {
diff --git a/src/protocol.h b/src/protocol.h
index 2f9a341..fcbc145 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -118,7 +118,7 @@ struct request {
/* Reply (server -> client). */
struct reply {
uint32_t magic; /* NBD_REPLY_MAGIC. */
- uint32_t error; /* 0 = ok, error code */
+ uint32_t error; /* NBD_SUCCESS or one of NBD_E*. */
uint64_t handle; /* Opaque handle. */
} __attribute__((packed));
@@ -133,4 +133,14 @@ struct reply {
#define NBD_CMD_MASK_COMMAND 0xffff
#define NBD_CMD_FLAG_FUA (1<<16)
+/* Error codes (previously errno).
+ * See http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ca4414804114fd0095b317785bc0b51862e62ebb
+ */
+#define NBD_SUCCESS 0
+#define NBD_EPERM 1
+#define NBD_EIO 5
+#define NBD_ENOMEM 12
+#define NBD_EINVAL 22
+#define NBD_ENOSPC 28
+
#endif /* NBDKIT_PROTOCOL_H */
--
2.7.4

27
0008-protocol-Pack-fixed_new_option_reply-struct.patch Normal file
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@ -0,0 +1,27 @@
From e5a945ea1e759e6441773c1e7663a1ac2492c8e4 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 17 May 2016 19:40:29 +0100
Subject: [PATCH 08/10] protocol: Pack fixed_new_option_reply struct.
This struct was not packed, but we were sending a reply by sending the
struct directly onto the wire. I think we got away with it, but not good.
---
src/protocol.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/protocol.h b/src/protocol.h
index fcbc145..de511a6 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -72,7 +72,7 @@ struct fixed_new_option_reply {
uint32_t reply; /* NBD_REP_* */
uint32_t replylen; /* we always send zero at the moment */
/* reply data follows, but we currently never send any */
-};
+} __attribute__((packed));
#define NEW_OPTION_REPLY UINT64_C(0x3e889045565a9)
--
2.7.4

48
0009-protocol-Rename-NEW_OPTION_REPLY-as-NBD_REP_MAGIC.patch Normal file
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@ -0,0 +1,48 @@
From f989fbad9b0527925c38f4350190cb1536a4d8c2 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 17 May 2016 19:42:35 +0100
Subject: [PATCH 09/10] protocol: Rename NEW_OPTION_REPLY as NBD_REP_MAGIC.
To be consistent with qemu's implementation.
---
src/connections.c | 2 +-
src/protocol.h | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/connections.c b/src/connections.c
index f0a7662..34566b3 100644
--- a/src/connections.c
+++ b/src/connections.c
@@ -235,7 +235,7 @@ send_newstyle_option_reply (struct connection *conn,
{
struct fixed_new_option_reply fixed_new_option_reply;
- fixed_new_option_reply.magic = htobe64 (NEW_OPTION_REPLY);
+ fixed_new_option_reply.magic = htobe64 (NBD_REP_MAGIC);
fixed_new_option_reply.option = htobe32 (option);
fixed_new_option_reply.reply = htobe32 (reply);
fixed_new_option_reply.replylen = htobe32 (0);
diff --git a/src/protocol.h b/src/protocol.h
index de511a6..71a8098 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -67,14 +67,14 @@ struct new_option {
/* Fixed newstyle handshake reply message. */
struct fixed_new_option_reply {
- uint64_t magic; /* NEW_OPTION_REPLY, network byte order */
+ uint64_t magic; /* NBD_REP_MAGIC, network byte order */
uint32_t option; /* option we are replying to */
uint32_t reply; /* NBD_REP_* */
uint32_t replylen; /* we always send zero at the moment */
/* reply data follows, but we currently never send any */
} __attribute__((packed));
-#define NEW_OPTION_REPLY UINT64_C(0x3e889045565a9)
+#define NBD_REP_MAGIC UINT64_C(0x3e889045565a9)
/* New-style handshake server reply. */
struct new_handshake_finish {
--
2.7.4

360
0010-Implement-newstyle-export-names.patch Normal file
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@ -0,0 +1,360 @@
From 0095b003b56894baad8e6789d523cf3c51905c05 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 17 May 2016 19:43:16 +0100
Subject: [PATCH 10/10] Implement newstyle export names.
This is now required by qemu >= 2.6. See this lengthy qemu-devel
thread for details:
https://lists.nongnu.org/archive/html/qemu-devel/2016-05/threads.html#02752
---
TODO | 13 -------------
docs/nbdkit.pod | 52 ++++++++++++++++++++++++++++++++-------------------
src/connections.c | 49 ++++++++++++++++++++++++++++++++++++++++--------
src/internal.h | 1 +
src/main.c | 32 +++++++++++++++++++++++--------
src/protocol.h | 3 +--
tests/test-newstyle.c | 7 +++++--
7 files changed, 105 insertions(+), 52 deletions(-)
diff --git a/TODO b/TODO
index 177a07c..30bf72e 100644
--- a/TODO
+++ b/TODO
@@ -11,19 +11,6 @@
* Performance - measure and improve it.
-* Implement export names. With export names it should be possible to
- have multiple plugins on the command line (each responding to a
- different export of course):
-
- nbdkit --export /foo plugin.so --export /bar another-plugin.so
-
- Note it should also be possible to either elect one plugin as the
- default that accepts all exportnames, or to divide the export name
- "space" up using regexps or wildcards.
-
- Export names are not actually paths (although that is how they are
- often used), but arbitrary UTF-8 text strings.
-
* Implement true parallel request handling. Currently
NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS and
NBDKIT_THREAD_MODEL_PARALLEL are the same, because we handle
diff --git a/docs/nbdkit.pod b/docs/nbdkit.pod
index 7204a38..728aad3 100644
--- a/docs/nbdkit.pod
+++ b/docs/nbdkit.pod
@@ -6,7 +6,7 @@ nbdkit - A toolkit for creating NBD servers
=head1 SYNOPSIS
- nbdkit [--dump-config] [-f] [-g GROUP] [-i IPADDR]
+ nbdkit [--dump-config] [-e EXPORTNAME] [-f] [-g GROUP] [-i IPADDR]
[--newstyle] [--oldstyle] [-P PIDFILE] [-p PORT] [-r]
[--run CMD] [-s] [-U SOCKET] [-u USER] [-v] [-V]
PLUGIN [key=value [key=value [...]]]
@@ -74,6 +74,19 @@ Display brief command line usage information and exit.
Dump out the compile-time configuration values and exit.
+=item B<-e> EXPORTNAME
+
+=item B<--export> EXPORTNAME
+
+=item B<--export-name> EXPORTNAME
+
+=item B<--exportname> EXPORTNAME
+
+Set the exportname and use the newstyle protocol (implies I<-n>).
+
+If not set, exportname C<""> (empty string) is used. Exportnames are
+not allowed with the oldstyle protocol.
+
=item B<-f>
=item B<--foreground>
@@ -118,9 +131,10 @@ protocol. See L</NEW STYLE VS OLD STYLE PROTOCOL> below.
=item B<--oldstyle>
-Use the oldstyle NBD protocol. This is currently the default, so this
-flag does nothing, but it is possible we might change the default
-protocol in future. See L</NEW STYLE VS OLD STYLE PROTOCOL> below.
+Use the oldstyle NBD protocol. This is currently the default (unless
+you use I<-n> or I<-e>), so this flag does nothing, but it is possible
+we might change the default protocol in future. See L</NEW STYLE VS
+OLD STYLE PROTOCOL> below.
=item B<-P> PIDFILE
@@ -307,27 +321,29 @@ use depends on the client and cannot be known in advance, nor can it
be negotiated from the server side.
nbdkit currently defaults to the oldstyle protocol for compatibility
-with qemu and libguestfs. This is also the same behaviour as
-qemu-nbd. Use the I<-n> or I<--newstyle> flag on the command line to
-use the newstyle protocol. Use the I<-o> or I<--oldstyle> flag to
-force the oldstyle protocol.
+with qemu and libguestfs. This is also the same behaviour as qemu-nbd
+E<le> 2.5. Use the I<-n> or I<--newstyle> flag on the command line to
+use the newstyle protocol. Use the I<-e> or I<--exportname> flag to
+set the exportname for the newstyle protocol. Use the I<-o> or
+I<--oldstyle> flag to force the oldstyle protocol.
Some common clients and the protocol they require:
- Client Protocol
+ Client Protocol
------------------------------------------------------------
- qemu without exportname oldstyle
- qemu with exportname newstyle
- nbd-client < 3.10 client can talk either protocol
- nbd-client >= 3.10 newstyle
+ qemu <= 2.5 without exportname oldstyle
+ qemu <= 2.5 with exportname newstyle
+ qemu >= 2.6 client can talk either protocol
+ nbd-client < 3.10 client can talk either protocol
+ nbd-client >= 3.10 newstyle
-If you use qemu without the exportname field against a newstyle
-server, it will give the error:
+If you use qemu E<le> 2.5 without the exportname field against a
+newstyle server, it will give the error:
Server requires an export name
-If you use qemu with the exportname field against an oldstyle server,
-it will give the error:
+If you use qemu E<le> 2.5 with the exportname field against an
+oldstyle server, it will give the error:
Server does not support export names
@@ -341,8 +357,6 @@ document says should be the case (which isn't based in reality), then
you should always use newstyle when using port 10809, and use oldstyle
on all other ports.
-nbdkit ignores export names at present (see also the C<TODO> file).
-
=head1 SIGNALS
C<nbdkit> responds to the following signals:
diff --git a/src/connections.c b/src/connections.c
index 34566b3..0c93f35 100644
--- a/src/connections.c
+++ b/src/connections.c
@@ -222,13 +222,8 @@ _negotiate_handshake_oldstyle (struct connection *conn)
return 0;
}
-/* Receive newstyle options.
- *
- * Currently we ignore NBD_OPT_EXPORT_NAME (see TODO), we close the
- * connection if sent NBD_OPT_ABORT, we send a canned list of
- * options for NBD_OPT_LIST, and we send NBD_REP_ERR_UNSUP for
- * everything else.
- */
+/* Receive newstyle options. */
+
static int
send_newstyle_option_reply (struct connection *conn,
uint32_t option, uint32_t reply)
@@ -250,6 +245,39 @@ send_newstyle_option_reply (struct connection *conn,
}
static int
+send_newstyle_option_reply_exportname (struct connection *conn,
+ uint32_t option, uint32_t reply,
+ const char *exportname)
+{
+ struct fixed_new_option_reply fixed_new_option_reply;
+ size_t name_len = strlen (exportname);
+ uint32_t len;
+
+ fixed_new_option_reply.magic = htobe64 (NBD_REP_MAGIC);
+ fixed_new_option_reply.option = htobe32 (option);
+ fixed_new_option_reply.reply = htobe32 (reply);
+ fixed_new_option_reply.replylen = htobe32 (name_len + sizeof (len));
+
+ if (xwrite (conn->sockout,
+ &fixed_new_option_reply, sizeof fixed_new_option_reply) == -1) {
+ nbdkit_error ("write: %m");
+ return -1;
+ }
+
+ len = htobe32 (name_len);
+ if (xwrite (conn->sockout, &len, sizeof len) == -1) {
+ nbdkit_error ("write: %m");
+ return -1;
+ }
+ if (xwrite (conn->sockout, exportname, name_len) == -1) {
+ nbdkit_error ("write: %m");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
_negotiate_handshake_newstyle_options (struct connection *conn)
{
struct new_option new_option;
@@ -309,7 +337,12 @@ _negotiate_handshake_newstyle_options (struct connection *conn)
continue;
}
- /* Since we don't support export names, there is nothing to list. */
+ /* Send back the exportname. */
+ debug ("newstyle negotiation: advertising export '%s'", exportname);
+ if (send_newstyle_option_reply_exportname (conn, option, NBD_REP_SERVER,
+ exportname) == -1)
+ return -1;
+
if (send_newstyle_option_reply (conn, option, NBD_REP_ACK) == -1)
return -1;
break;
diff --git a/src/internal.h b/src/internal.h
index 0603779..f58086a 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -48,6 +48,7 @@
#endif
/* main.c */
+extern const char *exportname;
extern const char *ipaddr;
extern int newstyle;
extern const char *port;
diff --git a/src/main.c b/src/main.c
index db4361e..9529f19 100644
--- a/src/main.c
+++ b/src/main.c
@@ -65,6 +65,7 @@ static void fork_into_background (void);
static uid_t parseuser (const char *);
static gid_t parsegroup (const char *);
+const char *exportname; /* -e */
int foreground; /* -f */
const char *ipaddr; /* -i */
int newstyle; /* -n */
@@ -84,10 +85,13 @@ static char *random_fifo = NULL;
enum { HELP_OPTION = CHAR_MAX + 1 };
-static const char *short_options = "fg:i:nop:P:rsu:U:vV";
+static const char *short_options = "e:fg:i:nop:P:rsu:U:vV";
static const struct option long_options[] = {
{ "help", 0, NULL, HELP_OPTION },
{ "dump-config",0, NULL, 0 },
+ { "export", 1, NULL, 'e' },
+ { "export-name",1, NULL, 'e' },
+ { "exportname", 1, NULL, 'e' },
{ "foreground", 0, NULL, 'f' },
{ "no-fork", 0, NULL, 'f' },
{ "group", 1, NULL, 'g' },
@@ -115,7 +119,7 @@ static const struct option long_options[] = {
static void
usage (void)
{
- printf ("nbdkit [--dump-config] [-f] [-g GROUP] [-i IPADDR]\n"
+ printf ("nbdkit [--dump-config] [-e EXPORTNAME] [-f] [-g GROUP] [-i IPADDR]\n"
" [--newstyle] [--oldstyle] [-P PIDFILE] [-p PORT] [-r]\n"
" [--run CMD] [-s] [-U SOCKET] [-u USER] [-v] [-V]\n"
" PLUGIN [key=value [key=value [...]]]\n"
@@ -173,6 +177,11 @@ main (int argc, char *argv[])
}
break;
+ case 'e':
+ exportname = optarg;
+ newstyle = 1;
+ break;
+
case 'f':
foreground = 1;
break;
@@ -190,9 +199,6 @@ main (int argc, char *argv[])
break;
case 'o':
- /* XXX When we add support for exportnames, we will need to
- * ensure that the user does not use -o + --export.
- */
newstyle = 0;
break;
@@ -263,12 +269,22 @@ main (int argc, char *argv[])
exit (EXIT_FAILURE);
}
+ /* Oldstyle protocol + exportname not allowed. */
+ if (newstyle == 0 && exportname != NULL) {
+ fprintf (stderr,
+ "%s: cannot use oldstyle protocol (-o) and exportname (-e)\n",
+ program_name);
+ exit (EXIT_FAILURE);
+ }
+
+ /* If exportname was not set on the command line, use "". */
+ if (exportname == NULL)
+ exportname = "";
+
/* Remaining command line arguments define the plugins and plugin
* configuration. If --help or --version was specified, we still
* partially parse these in order that we can display the per-plugin
- * help/version information. In future (when the new protocol and
- * export names are permitted) we will allow multiple plugins to be
- * given, but at the moment only one plugin is allowed.
+ * help/version information.
*/
while (optind < argc) {
const char *filename = argv[optind];
diff --git a/src/protocol.h b/src/protocol.h
index 71a8098..c885d9e 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -70,8 +70,7 @@ struct fixed_new_option_reply {
uint64_t magic; /* NBD_REP_MAGIC, network byte order */
uint32_t option; /* option we are replying to */
uint32_t reply; /* NBD_REP_* */
- uint32_t replylen; /* we always send zero at the moment */
- /* reply data follows, but we currently never send any */
+ uint32_t replylen;
} __attribute__((packed));
#define NBD_REP_MAGIC UINT64_C(0x3e889045565a9)
diff --git a/tests/test-newstyle.c b/tests/test-newstyle.c
index b1d8ce7..adcc568 100644
--- a/tests/test-newstyle.c
+++ b/tests/test-newstyle.c
@@ -44,6 +44,8 @@
#include "test.h"
+#define EXPORTNAME "/"
+
int
main (int argc, char *argv[])
{
@@ -52,7 +54,8 @@ main (int argc, char *argv[])
char *data;
size_t i, size;
- if (test_start_nbdkit ("-n", NBDKIT_PLUGIN ("file"), "file=file-data",
+ if (test_start_nbdkit ("-e", EXPORTNAME,
+ "-n", NBDKIT_PLUGIN ("file"), "file=file-data",
NULL) == -1)
exit (EXIT_FAILURE);
@@ -63,7 +66,7 @@ main (int argc, char *argv[])
}
/* Using any exportname causes qemu to use the newstyle protocol. */
- r = guestfs_add_drive_opts (g, "/" /* exportname */,
+ r = guestfs_add_drive_opts (g, EXPORTNAME,
GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "nbd",
GUESTFS_ADD_DRIVE_OPTS_SERVER, server,
--
2.7.4

25
nbdkit.spec
View File

@ -6,7 +6,7 @@
Name: nbdkit Name: nbdkit
Version: 1.1.11 Version: 1.1.11
Release: 7%{?dist} Release: 8%{?dist}
Summary: NBD server Summary: NBD server
License: BSD License: BSD
@ -15,11 +15,17 @@ URL: https://github.com/libguestfs/nbdkit
Source0: http://libguestfs.org/download/nbdkit/%{name}-%{version}.tar.gz Source0: http://libguestfs.org/download/nbdkit/%{name}-%{version}.tar.gz
# All patches are upstream since 1.1.11. # All patches are upstream since 1.1.11.
Patch1: 0001-Add-mandir-to-dump-config-output.patch Patch0001: 0001-Add-mandir-to-dump-config-output.patch
Patch2: 0002-Update-TODO.patch Patch0002: 0002-Update-TODO.patch
Patch3: 0003-Add-support-for-newstyle-NBD-protocol-RHBZ-1297100.patch Patch0003: 0003-Add-support-for-newstyle-NBD-protocol-RHBZ-1297100.patch
Patch4: 0004-xz-Fix-various-printf-warnings-on-32-bit.patch Patch0004: 0004-xz-Fix-various-printf-warnings-on-32-bit.patch
Patch5: 0005-ocaml-Avoid-race-when-building-NBDKit.cmi.patch Patch0005: 0005-ocaml-Avoid-race-when-building-NBDKit.cmi.patch
Patch0006: 0006-Test-the-o-oldstyle-command-line-option.patch
Patch0007: 0007-protocol-Send-limited-range-of-errno-values-to-the-c.patch
Patch0008: 0008-protocol-Pack-fixed_new_option_reply-struct.patch
Patch0009: 0009-protocol-Rename-NEW_OPTION_REPLY-as-NBD_REP_MAGIC.patch
Patch0010: 0010-Implement-newstyle-export-names.patch
# Because patch3 & patch5 patches Makefile.am, we need: # Because patch3 & patch5 patches Makefile.am, we need:
BuildRequires: automake, autoconf, libtool BuildRequires: automake, autoconf, libtool
@ -258,15 +264,12 @@ export LIBGUESTFS_TRACE=1
# Unlikely that libguestfs will work on ARM and PPC, so don't try running the # Unlikely that libguestfs will work on ARM and PPC, so don't try running the
# tests there. # tests there.
%ifnarch %{arm} ppc %{power64} %ifnarch %{arm} ppc %{power64}
# Broken on i686 because of https://bugzilla.redhat.com/show_bug.cgi?id=1302071
%ifnarch %{ix86}
make check || { make check || {
cat tests/test-suite.log cat tests/test-suite.log
exit 1 exit 1
} }
%endif %endif
%endif %endif
%endif
%ifarch %{ocaml_native_compiler} %ifarch %{ocaml_native_compiler}
@ -368,6 +371,10 @@ make check || {
%changelog %changelog
* Thu May 19 2016 Richard W.M. Jones <rjones@redhat.com> - 1.1.11-8
- Add all patches upstream since 1.1.11 (fixes RHBZ#1336758).
- Reenable tests on x86.
* Tue May 17 2016 Jitka Plesnikova <jplesnik@redhat.com> - 1.1.11-7 * Tue May 17 2016 Jitka Plesnikova <jplesnik@redhat.com> - 1.1.11-7
- Perl 5.24 rebuild - Perl 5.24 rebuild