From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1563CF33A67 for ; Thu, 5 Mar 2026 13:58:17 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.1246747.1545863 (Exim 4.92) (envelope-from ) id 1vy9DK-0004mk-9N; Thu, 05 Mar 2026 13:58:06 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 1246747.1545863; Thu, 05 Mar 2026 13:58:06 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1vy9DK-0004ln-3X; Thu, 05 Mar 2026 13:58:06 +0000 Received: by outflank-mailman (input) for mailman id 1246747; Thu, 05 Mar 2026 13:58:03 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1vy98K-00008m-OP for xen-devel@lists.xenproject.org; Thu, 05 Mar 2026 13:52:57 +0000 Received: from smtp-out1.suse.de (smtp-out1.suse.de [2a07:de40:b251:101:10:150:64:1]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 9bbd47c8-189a-11f1-9ccf-f158ae23cfc8; Thu, 05 Mar 2026 14:52:54 +0100 (CET) Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id E26253F8B7; Thu, 5 Mar 2026 13:52:53 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id BD3CA3EA68; Thu, 5 Mar 2026 13:52:53 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id jhIiLbWKqWkWTwAAD6G6ig (envelope-from ); Thu, 05 Mar 2026 13:52:53 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 9bbd47c8-189a-11f1-9ccf-f158ae23cfc8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1772718774; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OVzJ3vkzk9Kd/2UKnmB2k8cly65avjJkTaC6JZd+bg8=; b=iKGXaH4Yp+kB1FiF6PRKGT2+/U1JBirZdLjmovQ8VwqOXgUSAPvePz1hqJ/UmwX53A0wfo cc8MYRfeXMocMiiSMH6DQNZnpNKAQr3eH/UXAtKe5Bz+sklgRvztjHfxqVlYcmiHz6MHAf xXkvIen6QoIVh2dIVwiGWgKWkoWAjAs= Authentication-Results: smtp-out1.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1772718773; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OVzJ3vkzk9Kd/2UKnmB2k8cly65avjJkTaC6JZd+bg8=; b=U+3yZC/uzXKjWhzK8thLKyTThh9gbe3VUgm/crOtHn49WnU6SlfsqSuXs4zWhbdI4d5Bkg 5E7mTdTRdJBAMHxM/sESqw/kvWlT5NGPcKq6bfLxKiM82/x+SIiGLawDUL1hXJCtG6mjwG RfX7PD9+RxFFkgh7YFXc8RRLry9O1L4= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Nick Rosbrook , George Dunlap , Anthony PERARD Subject: [PATCH 08/11] tools/libxl: add functions for retrieving and setting xenstore quota Date: Thu, 5 Mar 2026 14:52:05 +0100 Message-ID: <20260305135208.2208663-9-jgross@suse.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260305135208.2208663-1-jgross@suse.com> References: <20260305135208.2208663-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-6.79 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.19)[-0.940]; MIME_GOOD(-0.10)[text/plain]; RCVD_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCPT_COUNT_FIVE(0.00)[5]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:mid,suse.com:email,imap1.dmz-prg2.suse.org:helo]; RCVD_TLS_ALL(0.00)[] Add some functions allowing to retrieve and set Xenstore quota (either global or domain specific). Signed-off-by: Juergen Gross --- tools/golang/xenlight/helpers.gen.go | 78 ++++++++++++++++++++ tools/golang/xenlight/types.gen.go | 9 +++ tools/include/libxl.h | 20 ++++++ tools/libs/light/Makefile | 1 + tools/libs/light/libxl_types.idl | 9 +++ tools/libs/light/libxl_xsquota.c | 102 +++++++++++++++++++++++++++ 6 files changed, 219 insertions(+) create mode 100644 tools/libs/light/libxl_xsquota.c diff --git a/tools/golang/xenlight/helpers.gen.go b/tools/golang/xenlight/helpers.gen.go index 8909fe8a1b..6c9af904c5 100644 --- a/tools/golang/xenlight/helpers.gen.go +++ b/tools/golang/xenlight/helpers.gen.go @@ -998,6 +998,84 @@ xc.policy = C.libxl_rdm_reserve_policy(x.Policy) return nil } +// NewXsQuotaItem returns an instance of XsQuotaItem initialized with defaults. +func NewXsQuotaItem() (*XsQuotaItem, error) { +var ( +x XsQuotaItem +xc C.libxl_xs_quota_item) + +C.libxl_xs_quota_item_init(&xc) +defer C.libxl_xs_quota_item_dispose(&xc) + +if err := x.fromC(&xc); err != nil { +return nil, err } + +return &x, nil} + +func (x *XsQuotaItem) fromC(xc *C.libxl_xs_quota_item) error { + x.Name = C.GoString(xc.name) +x.Val = uint32(xc.val) + + return nil} + +func (x *XsQuotaItem) toC(xc *C.libxl_xs_quota_item) (err error){defer func(){ +if err != nil{ +C.libxl_xs_quota_item_dispose(xc)} +}() + +if x.Name != "" { +xc.name = C.CString(x.Name)} +xc.val = C.uint32_t(x.Val) + + return nil + } + +// NewXsQuotaSet returns an instance of XsQuotaSet initialized with defaults. +func NewXsQuotaSet() (*XsQuotaSet, error) { +var ( +x XsQuotaSet +xc C.libxl_xs_quota_set) + +C.libxl_xs_quota_set_init(&xc) +defer C.libxl_xs_quota_set_dispose(&xc) + +if err := x.fromC(&xc); err != nil { +return nil, err } + +return &x, nil} + +func (x *XsQuotaSet) fromC(xc *C.libxl_xs_quota_set) error { + x.Quota = nil +if n := int(xc.num_quota); n > 0 { +cQuota := (*[1<<28]C.libxl_xs_quota_item)(unsafe.Pointer(xc.quota))[:n:n] +x.Quota = make([]XsQuotaItem, n) +for i, v := range cQuota { +if err := x.Quota[i].fromC(&v); err != nil { +return fmt.Errorf("converting field Quota: %v", err) } +} +} + + return nil} + +func (x *XsQuotaSet) toC(xc *C.libxl_xs_quota_set) (err error){defer func(){ +if err != nil{ +C.libxl_xs_quota_set_dispose(xc)} +}() + +if numQuota := len(x.Quota); numQuota > 0 { +xc.quota = (*C.libxl_xs_quota_item)(C.malloc(C.ulong(numQuota)*C.sizeof_libxl_xs_quota_item)) +xc.num_quota = C.int(numQuota) +cQuota := (*[1<<28]C.libxl_xs_quota_item)(unsafe.Pointer(xc.quota))[:numQuota:numQuota] +for i,v := range x.Quota { +if err := v.toC(&cQuota[i]); err != nil { +return fmt.Errorf("converting field Quota: %v", err) +} +} +} + + return nil + } + // NewDomainBuildInfo returns an instance of DomainBuildInfo initialized with defaults. func NewDomainBuildInfo(dtype DomainType) (*DomainBuildInfo, error) { var ( diff --git a/tools/golang/xenlight/types.gen.go b/tools/golang/xenlight/types.gen.go index ab9d4ca7b4..5393277190 100644 --- a/tools/golang/xenlight/types.gen.go +++ b/tools/golang/xenlight/types.gen.go @@ -543,6 +543,15 @@ Altp2MModeExternal Altp2MMode = 2 Altp2MModeLimited Altp2MMode = 3 ) +type XsQuotaItem struct { +Name string +Val uint32 +} + +type XsQuotaSet struct { +Quota []XsQuotaItem +} + type DomainBuildInfo struct { MaxVcpus int AvailVcpus Bitmap diff --git a/tools/include/libxl.h b/tools/include/libxl.h index bc35e412da..a70d9d347f 100644 --- a/tools/include/libxl.h +++ b/tools/include/libxl.h @@ -1537,6 +1537,18 @@ void libxl_mac_copy(libxl_ctx *ctx, libxl_mac *dst, const libxl_mac *src); */ #define LIBXL_HAVE_XEN_PLATFORM_PCI_BAR_UC +/* + * LIBXL_HAVE_XENSTORE_QUOTA + * + * If this is defined the Xenstore quota related functions + * libxl_xsquota_global_get() + * libxl_xsquota_global_set() + * libxl_xsquota_domain_get() + * libxl_xsquota_domain_set() + * are available. + */ +#define LIBXL_HAVE_XENSTORE_QUOTA + typedef char **libxl_string_list; void libxl_string_list_dispose(libxl_string_list *sl); int libxl_string_list_length(const libxl_string_list *sl); @@ -3011,6 +3023,14 @@ static inline int libxl_qemu_monitor_command_0x041200(libxl_ctx *ctx, #define libxl_qemu_monitor_command libxl_qemu_monitor_command_0x041200 #endif +/* Get/set global and per-domain Xenstore quota. */ +int libxl_xsquota_global_get(libxl_ctx *ctx, libxl_xs_quota_set *q); +int libxl_xsquota_global_set(libxl_ctx *ctx, libxl_xs_quota_set *q); +int libxl_xsquota_domain_get(libxl_ctx *ctx, uint32_t domid, + libxl_xs_quota_set *q); +int libxl_xsquota_domain_set(libxl_ctx *ctx, uint32_t domid, + libxl_xs_quota_set *q); + #include /* diff --git a/tools/libs/light/Makefile b/tools/libs/light/Makefile index bc60c46558..ca22a40c6c 100644 --- a/tools/libs/light/Makefile +++ b/tools/libs/light/Makefile @@ -106,6 +106,7 @@ OBJS-y += libxl_pvcalls.o OBJS-y += libxl_vsnd.o OBJS-y += libxl_vkb.o OBJS-y += libxl_virtio.o +OBJS-y += libxl_xsquota.o OBJS-y += libxl_genid.o OBJS-y += _libxl_types.o OBJS-y += libxl_flask.o diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl index d64a573ff3..c5ddc40f35 100644 --- a/tools/libs/light/libxl_types.idl +++ b/tools/libs/light/libxl_types.idl @@ -574,6 +574,15 @@ libxl_altp2m_mode = Enumeration("altp2m_mode", [ (3, "limited"), ], init_val = "LIBXL_ALTP2M_MODE_DISABLED") +libxl_xs_quota_item = Struct("xs_quota_item", [ + ("name", string), + ("val", uint32), + ]) + +libxl_xs_quota_set = Struct("xs_quota_set", [ + ("quota", Array(libxl_xs_quota_item, "num_quota")) + ]) + libxl_domain_build_info = Struct("domain_build_info",[ ("max_vcpus", integer), ("avail_vcpus", libxl_bitmap), diff --git a/tools/libs/light/libxl_xsquota.c b/tools/libs/light/libxl_xsquota.c new file mode 100644 index 0000000000..b9afa1c914 --- /dev/null +++ b/tools/libs/light/libxl_xsquota.c @@ -0,0 +1,102 @@ +/* SPDX-License-Identifier: LGPL-2.1-only */ + +/* Xenstore quota handling functions. */ + +#include "libxl_internal.h" + +static int get_quota(libxl_ctx *ctx, unsigned int domid, libxl_xs_quota_set *q, + bool (func)(struct xs_handle *h, unsigned int domid, + char *quota, unsigned int *value)) +{ + char **names; + unsigned int num, i; + int rc = 0; + GC_INIT(ctx); + + names = xs_get_quota_names(ctx->xsh, &num); + if (!names) { + /* Xenstore quota support is optional! */ + if (errno != ENOSYS) + rc = ERROR_FAIL; + q->num_quota = 0; + goto out; + } + + q->num_quota = num; + q->quota = libxl__calloc(NOGC, num, sizeof(*q->quota)); + for (i = 0; i < num; i++) { + q->quota[i].name = libxl__strdup(NOGC, names[i]); + if (!func(ctx->xsh, domid, q->quota[i].name, &q->quota[i].val)) { + libxl_xs_quota_set_dispose(q); + rc = ERROR_FAIL; + break; + } + } + + free(names); + + out: + GC_FREE; + return rc; +} + +static int set_quota(libxl_ctx *ctx, unsigned int domid, libxl_xs_quota_set *q, + bool (func)(struct xs_handle *h, unsigned int domid, + char *quota, unsigned int value)) +{ + unsigned int i; + int rc = 0; + GC_INIT(ctx); + + for (i = 0; i < q->num_quota; i++) { + if (!func(ctx->xsh, domid, q->quota[i].name, q->quota[i].val)) { + rc = ERROR_FAIL; + break; + } + } + + GC_FREE; + return rc; +} + +static bool get_global_quota(struct xs_handle *h, unsigned int domid, + char *quota, unsigned int *value) +{ + return xs_get_global_quota(h, quota, value); +} + +int libxl_xsquota_global_get(libxl_ctx *ctx, libxl_xs_quota_set *q) +{ + return get_quota(ctx, 0, q, get_global_quota); +} + +static bool set_global_quota(struct xs_handle *h, unsigned int domid, + char *quota, unsigned int value) +{ + return xs_set_global_quota(h, quota, value); +} + +int libxl_xsquota_global_set(libxl_ctx *ctx, libxl_xs_quota_set *q) +{ + return set_quota(ctx, 0, q, set_global_quota);; +} + +int libxl_xsquota_domain_get(libxl_ctx *ctx, uint32_t domid, + libxl_xs_quota_set *q) +{ + return get_quota(ctx, domid, q, xs_get_domain_quota); +} + +int libxl_xsquota_domain_set(libxl_ctx *ctx, uint32_t domid, + libxl_xs_quota_set *q) +{ + return set_quota(ctx, domid, q, xs_set_domain_quota); +} + +/* + * Local variables: + * mode: C + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ -- 2.53.0