iscsi: Split URL into individual options
This introduces a .bdrv_parse_filename handler for iscsi which parses an URL if given and translates it to individual options. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Jeff Cody <jcody@redhat.com>
This commit is contained in:
Kevin Wolf
Jeff Cody
parent
a1cf5fac2b
commit
d5895fcb1d
193
block/iscsi.c
193
block/iscsi.c
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@ -1483,20 +1483,6 @@ static void iscsi_readcapacity_sync(IscsiLun *iscsilun, Error **errp)
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}
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}
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/* TODO Convert to fine grained options */
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static QemuOptsList runtime_opts = {
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.name = "iscsi",
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.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
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.desc = {
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{
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.name = "filename",
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.type = QEMU_OPT_STRING,
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.help = "URL to the iscsi image",
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},
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{ /* end of list */ }
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},
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};
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static struct scsi_task *iscsi_do_inquiry(struct iscsi_context *iscsi, int lun,
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int evpd, int pc, void **inq, Error **errp)
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{
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@ -1618,20 +1604,102 @@ out:
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* We support iscsi url's on the form
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* iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun>
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*/
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static void iscsi_parse_filename(const char *filename, QDict *options,
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Error **errp)
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{
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struct iscsi_url *iscsi_url;
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const char *transport_name;
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char *lun_str;
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iscsi_url = iscsi_parse_full_url(NULL, filename);
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if (iscsi_url == NULL) {
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error_setg(errp, "Failed to parse URL : %s", filename);
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return;
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}
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#if LIBISCSI_API_VERSION >= (20160603)
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switch (iscsi_url->transport) {
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case TCP_TRANSPORT:
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transport_name = "tcp";
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break;
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case ISER_TRANSPORT:
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transport_name = "iser";
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break;
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default:
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error_setg(errp, "Unknown transport type (%d)",
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iscsi_url->transport);
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return;
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}
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#else
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transport_name = "tcp";
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#endif
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qdict_set_default_str(options, "transport", transport_name);
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qdict_set_default_str(options, "portal", iscsi_url->portal);
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qdict_set_default_str(options, "target", iscsi_url->target);
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lun_str = g_strdup_printf("%d", iscsi_url->lun);
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qdict_set_default_str(options, "lun", lun_str);
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g_free(lun_str);
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if (iscsi_url->user[0] != '\0') {
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qdict_set_default_str(options, "user", iscsi_url->user);
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qdict_set_default_str(options, "password", iscsi_url->passwd);
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}
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iscsi_destroy_url(iscsi_url);
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}
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/* TODO Add -iscsi options */
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static QemuOptsList runtime_opts = {
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.name = "iscsi",
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.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
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.desc = {
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{
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.name = "transport",
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.type = QEMU_OPT_STRING,
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},
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{
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.name = "portal",
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.type = QEMU_OPT_STRING,
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},
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{
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.name = "target",
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.type = QEMU_OPT_STRING,
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},
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{
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.name = "user",
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.type = QEMU_OPT_STRING,
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},
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{
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.name = "password",
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.type = QEMU_OPT_STRING,
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},
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{
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.name = "lun",
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.type = QEMU_OPT_NUMBER,
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},
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{ /* end of list */ }
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},
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};
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static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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Error **errp)
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{
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IscsiLun *iscsilun = bs->opaque;
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struct iscsi_context *iscsi = NULL;
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struct iscsi_url *iscsi_url = NULL;
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struct scsi_task *task = NULL;
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struct scsi_inquiry_standard *inq = NULL;
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struct scsi_inquiry_supported_pages *inq_vpd;
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char *initiator_name = NULL;
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QemuOpts *opts;
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Error *local_err = NULL;
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const char *filename;
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int i, ret = 0, timeout = 0;
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const char *transport_name, *portal, *target;
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const char *user, *password;
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#if LIBISCSI_API_VERSION >= (20160603)
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enum iscsi_transport_type transport;
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#endif
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int i, ret = 0, timeout = 0, lun;
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opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
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qemu_opts_absorb_qdict(opts, options, &local_err);
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@ -1641,18 +1709,41 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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goto out;
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}
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filename = qemu_opt_get(opts, "filename");
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transport_name = qemu_opt_get(opts, "transport");
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portal = qemu_opt_get(opts, "portal");
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target = qemu_opt_get(opts, "target");
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user = qemu_opt_get(opts, "user");
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password = qemu_opt_get(opts, "password");
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lun = qemu_opt_get_number(opts, "lun", 0);
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iscsi_url = iscsi_parse_full_url(iscsi, filename);
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if (iscsi_url == NULL) {
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error_setg(errp, "Failed to parse URL : %s", filename);
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if (!transport_name || !portal || !target) {
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error_setg(errp, "Need all of transport, portal and target options");
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ret = -EINVAL;
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goto out;
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}
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if (user && !password) {
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error_setg(errp, "If a user name is given, a password is required");
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ret = -EINVAL;
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goto out;
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}
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if (!strcmp(transport_name, "tcp")) {
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#if LIBISCSI_API_VERSION >= (20160603)
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transport = TCP_TRANSPORT;
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} else if (!strcmp(transport_name, "iser")) {
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transport = ISER_TRANSPORT;
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#else
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/* TCP is what older libiscsi versions always use */
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#endif
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} else {
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error_setg(errp, "Unknown transport: %s", transport_name);
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ret = -EINVAL;
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goto out;
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}
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memset(iscsilun, 0, sizeof(IscsiLun));
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initiator_name = parse_initiator_name(iscsi_url->target);
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initiator_name = parse_initiator_name(target);
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iscsi = iscsi_create_context(initiator_name);
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if (iscsi == NULL) {
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@ -1661,21 +1752,20 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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goto out;
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}
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#if LIBISCSI_API_VERSION >= (20160603)
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if (iscsi_init_transport(iscsi, iscsi_url->transport)) {
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if (iscsi_init_transport(iscsi, transport)) {
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error_setg(errp, ("Error initializing transport."));
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ret = -EINVAL;
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goto out;
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}
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#endif
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if (iscsi_set_targetname(iscsi, iscsi_url->target)) {
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if (iscsi_set_targetname(iscsi, target)) {
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error_setg(errp, "iSCSI: Failed to set target name.");
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ret = -EINVAL;
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goto out;
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}
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if (iscsi_url->user[0] != '\0') {
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ret = iscsi_set_initiator_username_pwd(iscsi, iscsi_url->user,
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iscsi_url->passwd);
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if (user) {
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ret = iscsi_set_initiator_username_pwd(iscsi, user, password);
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if (ret != 0) {
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error_setg(errp, "Failed to set initiator username and password");
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ret = -EINVAL;
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@ -1684,7 +1774,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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}
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/* check if we got CHAP username/password via the options */
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parse_chap(iscsi, iscsi_url->target, &local_err);
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parse_chap(iscsi, target, &local_err);
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if (local_err != NULL) {
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error_propagate(errp, local_err);
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ret = -EINVAL;
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@ -1700,7 +1790,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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iscsi_set_header_digest(iscsi, ISCSI_HEADER_DIGEST_NONE_CRC32C);
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/* check if we got HEADER_DIGEST via the options */
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parse_header_digest(iscsi, iscsi_url->target, &local_err);
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parse_header_digest(iscsi, target, &local_err);
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if (local_err != NULL) {
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error_propagate(errp, local_err);
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ret = -EINVAL;
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@ -1708,7 +1798,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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}
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/* timeout handling is broken in libiscsi before 1.15.0 */
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timeout = parse_timeout(iscsi_url->target);
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timeout = parse_timeout(target);
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#if LIBISCSI_API_VERSION >= 20150621
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iscsi_set_timeout(iscsi, timeout);
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#else
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@ -1717,7 +1807,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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}
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#endif
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if (iscsi_full_connect_sync(iscsi, iscsi_url->portal, iscsi_url->lun) != 0) {
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if (iscsi_full_connect_sync(iscsi, portal, lun) != 0) {
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error_setg(errp, "iSCSI: Failed to connect to LUN : %s",
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iscsi_get_error(iscsi));
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ret = -EINVAL;
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@ -1726,7 +1816,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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iscsilun->iscsi = iscsi;
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iscsilun->aio_context = bdrv_get_aio_context(bs);
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iscsilun->lun = iscsi_url->lun;
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iscsilun->lun = lun;
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iscsilun->has_write_same = true;
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task = iscsi_do_inquiry(iscsilun->iscsi, iscsilun->lun, 0, 0,
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@ -1829,9 +1919,6 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
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out:
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qemu_opts_del(opts);
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g_free(initiator_name);
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if (iscsi_url != NULL) {
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iscsi_destroy_url(iscsi_url);
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}
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if (task != NULL) {
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scsi_free_scsi_task(task);
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}
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@ -2040,15 +2127,15 @@ static BlockDriver bdrv_iscsi = {
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.format_name = "iscsi",
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.protocol_name = "iscsi",
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.instance_size = sizeof(IscsiLun),
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.bdrv_needs_filename = true,
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.bdrv_file_open = iscsi_open,
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.bdrv_close = iscsi_close,
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.bdrv_create = iscsi_create,
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.create_opts = &iscsi_create_opts,
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.bdrv_reopen_prepare = iscsi_reopen_prepare,
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.bdrv_reopen_commit = iscsi_reopen_commit,
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.bdrv_invalidate_cache = iscsi_invalidate_cache,
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.instance_size = sizeof(IscsiLun),
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.bdrv_parse_filename = iscsi_parse_filename,
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.bdrv_file_open = iscsi_open,
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.bdrv_close = iscsi_close,
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.bdrv_create = iscsi_create,
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.create_opts = &iscsi_create_opts,
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.bdrv_reopen_prepare = iscsi_reopen_prepare,
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.bdrv_reopen_commit = iscsi_reopen_commit,
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.bdrv_invalidate_cache = iscsi_invalidate_cache,
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.bdrv_getlength = iscsi_getlength,
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.bdrv_get_info = iscsi_get_info,
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@ -2075,15 +2162,15 @@ static BlockDriver bdrv_iser = {
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.format_name = "iser",
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.protocol_name = "iser",
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.instance_size = sizeof(IscsiLun),
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.bdrv_needs_filename = true,
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.bdrv_file_open = iscsi_open,
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.bdrv_close = iscsi_close,
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.bdrv_create = iscsi_create,
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.create_opts = &iscsi_create_opts,
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.bdrv_reopen_prepare = iscsi_reopen_prepare,
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.bdrv_reopen_commit = iscsi_reopen_commit,
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.bdrv_invalidate_cache = iscsi_invalidate_cache,
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.instance_size = sizeof(IscsiLun),
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.bdrv_parse_filename = iscsi_parse_filename,
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.bdrv_file_open = iscsi_open,
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.bdrv_close = iscsi_close,
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.bdrv_create = iscsi_create,
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.create_opts = &iscsi_create_opts,
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.bdrv_reopen_prepare = iscsi_reopen_prepare,
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.bdrv_reopen_commit = iscsi_reopen_commit,
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.bdrv_invalidate_cache = iscsi_invalidate_cache,
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.bdrv_getlength = iscsi_getlength,
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.bdrv_get_info = iscsi_get_info,
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