On Thu, Jul 20, 2023 at 17:19:59 -0500, Jonathon Jongsma wrote:
> For ssh disks that are served by nbdkit, we can support logging in with
> an ssh key file. Pass the path to the configured key file and the
> username to the nbdkit process.
>
> Signed-off-by: Jonathon Jongsma <jjongsma@xxxxxxxxxx>
> ---
> src/conf/domain_conf.c | 32 ++++++++++++++----
> src/conf/storage_source_conf.c | 1 +
> src/conf/storage_source_conf.h | 5 ++-
> src/qemu/qemu_nbdkit.c | 15 +++++++--
> .../disk-network-ssh-key.args.disk0 | 9 +++++
> .../disk-network-ssh.args.disk2 | 9 +++++
> tests/qemunbdkittest.c | 1 +
> .../qemuxml2argvdata/disk-network-ssh-key.xml | 33 +++++++++++++++++++
> 8 files changed, 94 insertions(+), 11 deletions(-)
> create mode 100644 tests/qemunbdkitdata/disk-network-ssh-key.args.disk0
> create mode 100644 tests/qemunbdkitdata/disk-network-ssh.args.disk2
> create mode 100644 tests/qemuxml2argvdata/disk-network-ssh-key.xml
> @@ -22164,8 +22172,20 @@ virDomainDiskSourceFormatNetwork(virBuffer *attrBuf,
> if (src->timeout)
> virBufferAsprintf(childBuf, "<timeout seconds='%llu'/>\n", src->timeout);
>
> - if (src->protocol == VIR_STORAGE_NET_PROTOCOL_SSH && src->ssh_known_hosts_file)
> - virBufferEscapeString(childBuf, "<knownHosts path='%s'/>\n", src->ssh_known_hosts_file);
> + if (src->protocol == VIR_STORAGE_NET_PROTOCOL_SSH) {
> + if (src->ssh_known_hosts_file)
> + virBufferEscapeString(childBuf, "<knownHosts path='%s'/>\n", src->ssh_known_hosts_file);
> + if (src->ssh_keyfile) {
> + virBufferAddLit(childBuf, "<identity");
> +
> + if (src->ssh_user)
> + virBufferEscapeString(childBuf, " username='%s'", src->ssh_user);
virBufferEscapeString skips the formatting of the whole XL parameter if
the 3rd argument is NULL, so the NULL checks here ..
> + if (src->ssh_keyfile)
... and here are not needed.
> + virBufferEscapeString(childBuf, " keyfile='%s'", src->ssh_keyfile);
> +
> + virBufferAddLit(childBuf, "/>\n");
> + }
> + }
> }
> diff --git a/src/conf/storage_source_conf.h b/src/conf/storage_source_conf.h
> index 8a9c7d07e2..8c805664af 100644
> --- a/src/conf/storage_source_conf.h
> +++ b/src/conf/storage_source_conf.h
> @@ -406,12 +406,11 @@ struct _virStorageSource {
>
> bool hostcdrom; /* backing device is a cdrom */
>
> - /* passthrough variables for the ssh driver which we don't handle properly */
> - /* these must not be used apart from formatting the output JSON in the qemu driver */
> + /* ssh variables */
> char *ssh_user;
> bool ssh_host_key_check_disabled;
> - /* additional ssh variables */
> char *ssh_known_hosts_file;
> + char *ssh_keyfile;
The new field *MUST* be copied in virStorageSourceCopy.
Reviewed-by: Peter Krempa <pkrempa@xxxxxxxxxx>
