From a000794c30a6c6603f000d39b6674bfb3be26037 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 29 Jul 2013 14:47:56 +0100
Subject: [PATCH] RHEL 7: Disable unsupported remote drive protocols
(RHBZ#962113).
This disables support for unsupported remote drive protocols:
* ftp
* ftps
* http
* https
* tftp
* gluster
* iscsi
* sheepdog
* ssh
Note 'nbd' is not disabled, and of course 'file' works.
We hope to gradually add some of these back over the lifetime of RHEL 7.
In RHEL 7.2: rbd (Ceph) support was enabled.
---
docs/guestfs-testing.pod | 20 -------
fish/guestfish.pod | 64 ++-------------------
fish/test-add-uri.sh | 32 -----------
generator/actions_core.ml | 50 +----------------
lib/drives.c | 8 +++
lib/guestfs.pod | 100 ---------------------------------
tests/disks/test-qemu-drive-libvirt.sh | 28 ---------
tests/disks/test-qemu-drive.sh | 60 --------------------
8 files changed, 15 insertions(+), 347 deletions(-)
diff --git a/docs/guestfs-testing.pod b/docs/guestfs-testing.pod
index 1e88ed4..ce64755 100644
--- a/docs/guestfs-testing.pod
+++ b/docs/guestfs-testing.pod
@@ -113,26 +113,6 @@ image. To exit, type C<exit>.
If you get an error, try enabling debugging (add C<-v> to the command
line). Also make sure that L<libguestfs-test-tool(1)> succeeds.
-=head2 Try to open a remote guest image with guestfish.
-
-You may also have to disable libvirt by setting this:
-
- export LIBGUESTFS_BACKEND=direct
-
-If you have a disk image available over HTTP/FTP, try to open it.
-
- guestfish --ro -i --format=raw -a http://www.example.com/disk.img
-
-For SSH you will need to make sure that ssh-agent is set up so you
-don't need a password to log in to the remote machine. Then a command
-similar to this should work:
-
- guestfish --ro -i --format=raw \
- -a ssh://remote.example.com/path/to/disk.img
-
-If you get an error, try enabling debugging (add C<-v> to the command
-line). Also make sure that L<libguestfs-test-tool(1)> succeeds.
-
=head2 Run virt-alignment-scan on all your guests.
Run L<virt-alignment-scan(1)> on guests or disk images:
diff --git a/fish/guestfish.pod b/fish/guestfish.pod
index 3b71c3a..cbaaca5 100644
--- a/fish/guestfish.pod
+++ b/fish/guestfish.pod
@@ -131,9 +131,9 @@ To list what is available do:
=head2 Remote drives
-Access a remote disk using ssh:
+Access a remote disk using NBD:
- guestfish -a ssh://example.com/path/to/disk.img
+ guestfish -a nbd://example.com
=head2 Remote control
@@ -1120,12 +1120,12 @@ L<guestfs(3)/REMOTE STORAGE>>.
On the command line, you can use the I<-a> option to add network
block devices using a URI-style format, for example:
- guestfish -a ssh://root@example.com/disk.img
+ guestfish -a nbd://example.com
URIs I<cannot> be used with the L</add> command. The equivalent
command using the API directly is:
- ><fs> add /disk.img protocol:ssh server:tcp:example.com username:root
+ ><fs> add /disk.img protocol:nbd server:tcp:example.com
The possible I<-a URI> formats are described below.
@@ -1135,40 +1135,6 @@ The possible I<-a URI> formats are described below.
Add the local disk image (or device) called F<disk.img>.
-=head2 B<-a ftp://[user@]example.com[:port]/disk.img>
-
-=head2 B<-a ftps://[user@]example.com[:port]/disk.img>
-
-=head2 B<-a http://[user@]example.com[:port]/disk.img>
-
-=head2 B<-a https://[user@]example.com[:port]/disk.img>
-
-=head2 B<-a tftp://[user@]example.com[:port]/disk.img>
-
-Add a disk located on a remote FTP, HTTP or TFTP server.
-
-The equivalent API command would be:
-
- ><fs> add /disk.img protocol:(ftp|...) server:tcp:example.com
-
-=head2 B<-a gluster://example.com[:port]/volname/image>
-
-Add a disk image located on GlusterFS storage.
-
-The server is the one running C<glusterd>, and may be C<localhost>.
-
-The equivalent API command would be:
-
- ><fs> add volname/image protocol:gluster server:tcp:example.com
-
-=head2 B<-a iscsi://example.com[:port]/target-iqn-name[/lun]>
-
-Add a disk located on an iSCSI server.
-
-The equivalent API command would be:
-
- ><fs> add target-iqn-name/lun protocol:iscsi server:tcp:example.com
-
=head2 B<-a nbd://example.com[:port]>
=head2 B<-a nbd://example.com[:port]/exportname>
@@ -1203,28 +1169,6 @@ The equivalent API command would be:
><fs> add pool/disk protocol:rbd server:tcp:example.com:port
-=head2 B<-a sheepdog://[example.com[:port]]/volume/image>
-
-Add a disk image located on a Sheepdog volume.
-
-The server name is optional. Although libguestfs and Sheepdog
-supports multiple servers, only at most one server can be specified
-when using this URI syntax.
-
-The equivalent API command would be:
-
- ><fs> add volume protocol:sheepdog [server:tcp:example.com]
-
-=head2 B<-a ssh://[user@]example.com[:port]/disk.img>
-
-Add a disk image located on a remote server, accessed using the Secure
-Shell (ssh) SFTP protocol. SFTP is supported out of the box by all
-major SSH servers.
-
-The equivalent API command would be:
-
- ><fs> add /disk protocol:ssh server:tcp:example.com [username:user]
-
=head1 PROGRESS BARS
Some (not all) long-running commands send progress notification
diff --git a/fish/test-add-uri.sh b/fish/test-add-uri.sh
index 756df99..8f84fd3 100755
--- a/fish/test-add-uri.sh
+++ b/fish/test-add-uri.sh
@@ -40,14 +40,6 @@ function fail ()
$VG guestfish -x -a file://$abs_builddir/test-add-uri.img </dev/null >test-add-uri.out 2>&1
grep -sq 'add_drive ".*/test-add-uri.img"' test-add-uri.out || fail
-# curl
-$VG guestfish -x -a ftp://user@example.com/disk.img </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "/disk.img" "protocol:ftp" "server:tcp:example.com" "username:user"' test-add-uri.out || fail
-
-# gluster
-$VG guestfish -x -a gluster://example.com/disk </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "disk" "protocol:gluster" "server:tcp:example.com"' test-add-uri.out || fail
-
# NBD
$VG guestfish -x -a nbd://example.com </dev/null >test-add-uri.out 2>&1
grep -sq 'add_drive "" "protocol:nbd" "server:tcp:example.com"' test-add-uri.out || fail
@@ -67,29 +59,5 @@ grep -sq 'add_drive "pool/disk" "protocol:rbd" "server:tcp:example.com:6789"' te
$VG guestfish -x -a rbd:///pool/disk </dev/null >test-add-uri.out 2>&1
grep -sq 'add_drive "pool/disk" "protocol:rbd"' test-add-uri.out || fail
-# sheepdog
-$VG guestfish -x -a sheepdog:///volume/image </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "volume/image" "protocol:sheepdog"' test-add-uri.out || fail
-
-$VG guestfish -x -a sheepdog://example.com:3000/volume/image </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "volume/image" "protocol:sheepdog" "server:tcp:example.com:3000"' test-add-uri.out || fail
-
-# ssh
-$VG guestfish -x -a ssh://example.com/disk.img </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "/disk.img" "protocol:ssh" "server:tcp:example.com"' test-add-uri.out || fail
-
-$VG guestfish -x -a ssh://user@example.com/disk.img </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "/disk.img" "protocol:ssh" "server:tcp:example.com" "username:user"' test-add-uri.out || fail
-
-$VG guestfish -x -a ssh://user@example.com:2000/disk.img </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "/disk.img" "protocol:ssh" "server:tcp:example.com:2000" "username:user"' test-add-uri.out || fail
-
-# iSCSI
-$VG guestfish -x -a iscsi://example.com/iqn.2015-12.com.libguestfs:test1/0 </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "iqn.2015-12.com.libguestfs:test1/0" "protocol:iscsi" "server:tcp:example.com"' test-add-uri.out || fail
-
-$VG guestfish -x -a iscsi://user:password@example.com/iqn.2015-12.com.libguestfs:test2/0 </dev/null >test-add-uri.out 2>&1
-grep -sq 'add_drive "iqn.2015-12.com.libguestfs:test2/0" "protocol:iscsi" "server:tcp:example.com" "username:user" "secret:password"' test-add-uri.out || fail
-
rm test-add-uri.out
rm test-add-uri.img
diff --git a/generator/actions_core.ml b/generator/actions_core.ml
index 2567981..e4b2b8c 100644
--- a/generator/actions_core.ml
+++ b/generator/actions_core.ml
@@ -522,29 +522,6 @@ F<filename> is interpreted as a local file or device.
This is the default if the optional protocol parameter
is omitted.
-=item C<protocol = \"ftp\"|\"ftps\"|\"http\"|\"https\"|\"tftp\">
-
-Connect to a remote FTP, HTTP or TFTP server.
-The C<server> parameter must also be supplied - see below.
-
-See also: L<guestfs(3)/FTP, HTTP AND TFTP>
-
-=item C<protocol = \"gluster\">
-
-Connect to the GlusterFS server.
-The C<server> parameter must also be supplied - see below.
-
-See also: L<guestfs(3)/GLUSTER>
-
-=item C<protocol = \"iscsi\">
-
-Connect to the iSCSI server.
-The C<server> parameter must also be supplied - see below.
-The C<username> parameter may be supplied. See below.
-The C<secret> parameter may be supplied. See below.
-
-See also: L<guestfs(3)/ISCSI>.
-
=item C<protocol = \"nbd\">
Connect to the Network Block Device server.
@@ -561,22 +538,6 @@ The C<secret> parameter may be supplied. See below.
See also: L<guestfs(3)/CEPH>.
-=item C<protocol = \"sheepdog\">
-
-Connect to the Sheepdog server.
-The C<server> parameter may also be supplied - see below.
-
-See also: L<guestfs(3)/SHEEPDOG>.
-
-=item C<protocol = \"ssh\">
-
-Connect to the Secure Shell (ssh) server.
-
-The C<server> parameter must be supplied.
-The C<username> parameter may be supplied. See below.
-
-See also: L<guestfs(3)/SSH>.
-
=back
=item C<server>
@@ -587,13 +548,8 @@ is a list of server(s).
Protocol Number of servers required
-------- --------------------------
file List must be empty or param not used at all
- ftp|ftps|http|https|tftp Exactly one
- gluster Exactly one
- iscsi Exactly one
nbd Exactly one
rbd Zero or more
- sheepdog Zero or more
- ssh Exactly one
Each list element is a string specifying a server. The string must be
in one of the following formats:
@@ -609,10 +565,10 @@ for the protocol is used (see F</etc/services>).
=item C<username>
-For the C<ftp>, C<ftps>, C<http>, C<https>, C<iscsi>, C<rbd>, C<ssh>
-and C<tftp> protocols, this specifies the remote username.
+For the C<rbd>
+protocol, this specifies the remote username.
-If not given, then the local username is used for C<ssh>, and no authentication
+If not given, then no authentication
is attempted for ceph. But note this sometimes may give unexpected results, for
example if using the libvirt backend and if the libvirt backend is configured to
start the qemu appliance as a special user such as C<qemu.qemu>. If in doubt,
diff --git a/lib/drives.c b/lib/drives.c
index 4cf41cd..2d86ca8 100644
--- a/lib/drives.c
+++ b/lib/drives.c
@@ -165,6 +165,7 @@ create_drive_non_file (guestfs_h *g,
return drv;
}
+#if 0 /* DISABLED IN RHEL 7 */
static struct drive *
create_drive_curl (guestfs_h *g,
const struct drive_create_data *data)
@@ -223,6 +224,7 @@ create_drive_gluster (guestfs_h *g,
return create_drive_non_file (g, data);
}
+#endif /* DISABLED IN RHEL 7 */
static int
nbd_port (void)
@@ -291,6 +293,7 @@ create_drive_rbd (guestfs_h *g,
return create_drive_non_file (g, data);
}
+#if 0 /* DISABLED IN RHEL 7 */
static struct drive *
create_drive_sheepdog (guestfs_h *g,
const struct drive_create_data *data)
@@ -391,6 +394,7 @@ create_drive_iscsi (guestfs_h *g,
return create_drive_non_file (g, data);
}
+#endif /* DISABLED IN RHEL 7 */
/**
* Create the special F</dev/null> drive.
@@ -826,6 +830,7 @@ guestfs_impl_add_drive_opts (guestfs_h *g, const char *filename,
drv = create_drive_file (g, &data);
}
}
+#if 0 /* DISABLED IN RHEL 7 */
else if (STREQ (protocol, "ftp")) {
data.protocol = drive_protocol_ftp;
drv = create_drive_curl (g, &data);
@@ -850,6 +855,7 @@ guestfs_impl_add_drive_opts (guestfs_h *g, const char *filename,
data.protocol = drive_protocol_iscsi;
drv = create_drive_iscsi (g, &data);
}
+#endif /* DISABLED IN RHEL 7 */
else if (STREQ (protocol, "nbd")) {
data.protocol = drive_protocol_nbd;
drv = create_drive_nbd (g, &data);
@@ -858,6 +864,7 @@ guestfs_impl_add_drive_opts (guestfs_h *g, const char *filename,
data.protocol = drive_protocol_rbd;
drv = create_drive_rbd (g, &data);
}
+#if 0 /* DISABLED IN RHEL 7 */
else if (STREQ (protocol, "sheepdog")) {
data.protocol = drive_protocol_sheepdog;
drv = create_drive_sheepdog (g, &data);
@@ -870,6 +877,7 @@ guestfs_impl_add_drive_opts (guestfs_h *g, const char *filename,
data.protocol = drive_protocol_tftp;
drv = create_drive_curl (g, &data);
}
+#endif /* DISABLED IN RHEL 7 */
else {
error (g, _("unknown protocol '%s'"), protocol);
drv = NULL; /*FALLTHROUGH*/
diff --git a/lib/guestfs.pod b/lib/guestfs.pod
index e02cda6..41aa7ad 100644
--- a/lib/guestfs.pod
+++ b/lib/guestfs.pod
@@ -714,70 +714,6 @@ servers. The server string is documented in
L</guestfs_add_drive_opts>. The C<username> and C<secret> parameters are
also optional, and if not given, then no authentication will be used.
-=head3 FTP, HTTP AND TFTP
-
-Libguestfs can access remote disks over FTP, FTPS, HTTP, HTTPS
-or TFTP protocols.
-
-To do this, set the optional C<protocol> and C<server> parameters of
-L</guestfs_add_drive_opts> like this:
-
- char **servers = { "www.example.org", NULL };
- guestfs_add_drive_opts (g, "/disk.img",
- GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
- GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "http",
- GUESTFS_ADD_DRIVE_OPTS_SERVER, servers,
- -1);
-
-The C<protocol> can be one of C<"ftp">, C<"ftps">, C<"http">,
-C<"https"> or C<"tftp">.
-
-C<servers> (the C<server> parameter) is a list which must have a
-single element. The single element is a string defining the web,
-FTP or TFTP server. The format of this string is documented in
-L</guestfs_add_drive_opts>.
-
-=head3 GLUSTER
-
-Libguestfs can access Gluster disks.
-
-To do this, set the optional C<protocol> and C<server> parameters of
-L</guestfs_add_drive_opts> like this:
-
- char **servers = { "gluster.example.org:24007", NULL };
- guestfs_add_drive_opts (g, "volname/image",
- GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
- GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "gluster",
- GUESTFS_ADD_DRIVE_OPTS_SERVER, servers,
- -1);
-
-C<servers> (the C<server> parameter) is a list which must have a
-single element. The single element is a string defining the Gluster
-server. The format of this string is documented in
-L</guestfs_add_drive_opts>.
-
-Note that gluster usually requires the client process (ie. libguestfs)
-to run as B<root> and will give unfathomable errors if it is not
-(eg. "No data available").
-
-=head3 ISCSI
-
-Libguestfs can access iSCSI disks remotely.
-
-To do this, set the optional C<protocol> and C<server> parameters like
-this:
-
- char **server = { "iscsi.example.org:3000", NULL };
- guestfs_add_drive_opts (g, "target-iqn-name/lun",
- GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
- GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "iscsi",
- GUESTFS_ADD_DRIVE_OPTS_SERVER, server,
- -1);
-
-The C<server> parameter is a list which must have a single element.
-The single element is a string defining the iSCSI server. The format
-of this string is documented in L</guestfs_add_drive_opts>.
-
=head3 NETWORK BLOCK DEVICE
Libguestfs can access Network Block Device (NBD) disks remotely.
@@ -840,42 +776,6 @@ L<https://bugs.launchpad.net/qemu/+bug/1155677>
=back
-=head3 SHEEPDOG
-
-Libguestfs can access Sheepdog disks.
-
-To do this, set the optional C<protocol> and C<server> parameters of
-L</guestfs_add_drive_opts> like this:
-
- char **servers = { /* optional servers ... */ NULL };
- guestfs_add_drive_opts (g, "volume",
- GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
- GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "sheepdog",
- GUESTFS_ADD_DRIVE_OPTS_SERVER, servers,
- -1);
-
-The optional list of C<servers> may be zero or more server addresses
-(C<"hostname:port">). The format of the server strings is documented
-in L</guestfs_add_drive_opts>.
-
-=head3 SSH
-
-Libguestfs can access disks over a Secure Shell (SSH) connection.
-
-To do this, set the C<protocol> and C<server> and (optionally)
-C<username> parameters of L</guestfs_add_drive_opts> like this:
-
- char **server = { "remote.example.com", NULL };
- guestfs_add_drive_opts (g, "/path/to/disk.img",
- GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
- GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "ssh",
- GUESTFS_ADD_DRIVE_OPTS_SERVER, server,
- GUESTFS_ADD_DRIVE_OPTS_USERNAME, "remoteuser",
- -1);
-
-The format of the server string is documented in
-L</guestfs_add_drive_opts>.
-
=head2 INSPECTION
Libguestfs has APIs for inspecting an unknown disk image to find out
diff --git a/tests/disks/test-qemu-drive-libvirt.sh b/tests/disks/test-qemu-drive-libvirt.sh
index a1a7b89..aefd7cb 100755
--- a/tests/disks/test-qemu-drive-libvirt.sh
+++ b/tests/disks/test-qemu-drive-libvirt.sh
@@ -64,34 +64,6 @@ check_output
grep -sq -- '-drive file=rbd:abc-def/ghi-jkl:auth_supported=none,' "$DEBUG_QEMU_FILE" || fail
rm "$DEBUG_QEMU_FILE"
-# Gluster.
-
-$guestfish -d gluster run ||:
-check_output
-grep -sq -- '-drive file=gluster://1.2.3.4:1234/volname/image,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
-# iSCSI.
-
-$guestfish -d iscsi run ||:
-check_output
-grep -sq -- '-drive file=iscsi://1.2.3.4:1234/iqn.2003-01.org.linux-iscsi.fedora,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
-# NBD.
-
-$guestfish -d nbd run ||:
-check_output
-grep -sq -- '-drive file=nbd:1.2.3.4:1234,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
-# Sheepdog.
-
-$guestfish -d sheepdog run ||:
-check_output
-grep -sq -- '-drive file=sheepdog:volume,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
# Local, stored in a pool.
$guestfish -d pool1 run ||:
diff --git a/tests/disks/test-qemu-drive.sh b/tests/disks/test-qemu-drive.sh
index 19dd60a..583e031 100755
--- a/tests/disks/test-qemu-drive.sh
+++ b/tests/disks/test-qemu-drive.sh
@@ -62,45 +62,6 @@ check_output
grep -sq -- '-drive file=rbd:abc-def/ghi-jkl:auth_supported=none,' "$DEBUG_QEMU_FILE" || fail
rm "$DEBUG_QEMU_FILE"
-# HTTP.
-
-guestfish <<EOF ||:
- add "/disk.img" "format:raw" "protocol:http" "server:www.example.com"
- run
-EOF
-check_output
-grep -sq -- '-drive file=http://www.example.com/disk.img,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
-# Gluster.
-
-guestfish <<EOF ||:
- add "volname/image" "format:raw" "protocol:gluster" "server:www.example.com:24007"
- run
-EOF
-check_output
-grep -sq -- '-drive file=gluster://www.example.com:24007/volname/image,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
-# iSCSI.
-
-guestfish <<EOF ||:
- add "target-iqn-name/lun" "format:raw" "protocol:iscsi" "server:www.example.com:3000"
- run
-EOF
-check_output
-grep -sq -- '-drive file=iscsi://www.example.com:3000/target-iqn-name/lun,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
-guestfish <<EOF ||:
- add "target-iqn-name/lun" "format:raw" "protocol:iscsi" "server:www.example.com:3000" \
- "username:user" "secret:pass"
- run
-EOF
-check_output
-grep -sq -- '-drive file=iscsi://user%pass@www.example.com:3000/target-iqn-name/lun,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
# NBD.
guestfish <<EOF ||:
@@ -118,24 +79,3 @@ EOF
check_output
grep -sq -- '-drive file=nbd:unix:/socket,' "$DEBUG_QEMU_FILE" || fail
rm "$DEBUG_QEMU_FILE"
-
-# Sheepdog.
-
-guestfish <<EOF ||:
- add "volume" "format:raw" "protocol:sheepdog"
- run
-EOF
-check_output
-grep -sq -- '-drive file=sheepdog:volume,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
-
-# SSH.
-
-guestfish <<EOF ||:
- add "/disk.img" "format:raw" "protocol:ssh" "server:example.com" \
- "username:rich"
- run
-EOF
-check_output
-grep -sq -- '-drive file=ssh://rich@example.com/disk.img,' "$DEBUG_QEMU_FILE" || fail
-rm "$DEBUG_QEMU_FILE"
--
2.9.4