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t=1628171947; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=Dzsn9Dn9KFp6k7QPAafZ2uEMzRpFO7kOO+MXYadQyhE=; b=YkWRlbCbUG9vooT9tipjgWoE0TS6GSmEkkaV9ppUNfUyB35GEGYv5/gNaLJYA4cHYiZs05 J3FJxMTBVVbJh/Zw3kPJ1i5gd6C1mhXKHRCxjV80maWK6rWwu9+c9ajozexnjTwAGRPnzV dgoY825QcWNioJpV6HVUWmiBBIDJUo8= X-MC-Unique: AZiLqpt3NKiu15eqKcmpdA-1 From: Pavel Hrdina To: libvir-list@redhat.com Subject: [libvirt PATCH v2 1/5] vircgroup: introduce virCgroupGetInode function Date: Thu, 5 Aug 2021 15:56:05 +0200 Message-Id: <8fc03bcd26082721a73f2ed3bdc65cc41b05538a.1628171661.git.phrdina@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-loop: libvir-list@redhat.com X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=libvir-list-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1628171948909100001 Content-Type: text/plain; charset="utf-8" For new feature Fibre Channel VMID we will need to get inode of the VM root cgroup as it is used in the new kernel API together with VMID. Signed-off-by: Pavel Hrdina --- src/libvirt_private.syms | 1 + src/util/vircgroup.c | 31 +++++++++++++++++++++++++++++++ src/util/vircgroup.h | 2 ++ 3 files changed, 34 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index aed40977b3..c2321aba70 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -1920,6 +1920,7 @@ virCgroupGetCpuShares; virCgroupGetDevicePermsString; virCgroupGetDomainTotalCpuStats; virCgroupGetFreezerState; +virCgroupGetInode; virCgroupGetMemoryHardLimit; virCgroupGetMemorySoftLimit; virCgroupGetMemoryStat; diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c index 1b3b28342e..4c9445340e 100644 --- a/src/util/vircgroup.c +++ b/src/util/vircgroup.c @@ -3973,3 +3973,34 @@ virCgroupGetCpuPeriodQuota(virCgroup *cgroup, unsign= ed long long *period, =20 return 0; } + + +/** + * virCgroupGetInode: + * + * @cgroup: the cgroup to get inode for + * + * Get the @cgroup inode and return its value to the caller. + * + * Returns inode on success, -1 on error with error message reported. + */ +int +virCgroupGetInode(virCgroup *cgroup) +{ + struct stat st; + int controller =3D virCgroupGetAnyController(cgroup); + g_autofree char *path =3D NULL; + + if (controller < 0) + return -1; + + if (virCgroupPathOfController(cgroup, controller, "", &path) < 0) + return -1; + + if (stat(path, &st) < 0) { + virReportSystemError(errno, _("failed to get stat for '%s'"), path= ); + return -1; + } + + return st.st_ino; +} diff --git a/src/util/vircgroup.h b/src/util/vircgroup.h index 8002cac570..690f09465c 100644 --- a/src/util/vircgroup.h +++ b/src/util/vircgroup.h @@ -283,3 +283,5 @@ int virCgroupSetOwner(virCgroup *cgroup, int virCgroupHasEmptyTasks(virCgroup *cgroup, int controller); =20 bool virCgroupControllerAvailable(int controller); + +int virCgroupGetInode(virCgroup *cgroup); --=20 2.31.1