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From 080e123711e8c31634567836c9ca1adf79bcf904 Mon Sep 17 00:00:00 2001
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Message-Id: <080e123711e8c31634567836c9ca1adf79bcf904@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Fri, 16 Aug 2019 14:36:52 +0200
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Subject: [PATCH] util: storage: Allow checking whether virStorageFileCreate is
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supported
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Add virStorageFileSupportsCreate which allows silent check whether
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virStorageFileCreate is implemented.
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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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(cherry picked from commit e776194ad2501c9dcba8b4d9f1272342cd7f7c41)
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https: //bugzilla.redhat.com/show_bug.cgi?id=1724808
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Message-Id: <e4d77e48d0f20da3d0254c95de9904d77cf971df.1565958905.git.pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/libvirt_private.syms | 1 +
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src/util/virstoragefile.c | 20 ++++++++++++++++++++
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src/util/virstoragefile.h | 1 +
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3 files changed, 22 insertions(+)
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diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
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index bf99930802..e696fa512c 100644
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--- a/src/libvirt_private.syms
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+++ b/src/libvirt_private.syms
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@@ -2845,6 +2845,7 @@ virStorageFileReportBrokenChain;
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virStorageFileResize;
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virStorageFileStat;
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virStorageFileSupportsAccess;
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+virStorageFileSupportsCreate;
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virStorageFileSupportsSecurityDriver;
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virStorageFileUnlink;
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virStorageIsFile;
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diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
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index f320bc1928..faf21db567 100644
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--- a/src/util/virstoragefile.c
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+++ b/src/util/virstoragefile.c
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@@ -4446,6 +4446,26 @@ virStorageFileSupportsAccess(const virStorageSource *src)
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}
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+/**
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+ * virStorageFileSupportsCreate:
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+ * @src: a storage file structure
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+ *
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+ * Check if the storage driver supports creating storage described by @src
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+ * via virStorageFileCreate.
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+ */
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+int
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+virStorageFileSupportsCreate(const virStorageSource *src)
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+{
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+ virStorageFileBackendPtr backend;
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+ int rv;
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+
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+ if ((rv = virStorageFileGetBackendForSupportCheck(src, &backend)) < 1)
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+ return rv;
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+
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+ return backend->storageFileCreate ? 1 : 0;
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+}
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+
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+
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void
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virStorageFileDeinit(virStorageSourcePtr src)
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{
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diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
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index 7d28dcfe65..b99afee437 100644
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--- a/src/util/virstoragefile.h
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+++ b/src/util/virstoragefile.h
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@@ -505,6 +505,7 @@ int virStorageFileChown(const virStorageSource *src, uid_t uid, gid_t gid);
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int virStorageFileSupportsSecurityDriver(const virStorageSource *src);
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int virStorageFileSupportsAccess(const virStorageSource *src);
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+int virStorageFileSupportsCreate(const virStorageSource *src);
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int virStorageFileGetMetadata(virStorageSourcePtr src,
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uid_t uid, gid_t gid,
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--
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2.22.1
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