[PATCH 1/6] util: Export virStorageFileSupportsBackingChainTraversal

[Peter Krempa <pkrempa@xxxxxxxxxx>]

The function will be reused in the qemu snapshot code. The argument is
turned into const similarly to the other virStorageFileSupports*
functions.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/libvirt_private.syms  | 1 +
 src/util/virstoragefile.c | 4 ++--
 src/util/virstoragefile.h | 1 +
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 83f40cefe6..9db4ac7933 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2994,6 +2994,7 @@ virStorageFileReportBrokenChain;
 virStorageFileResize;
 virStorageFileStat;
 virStorageFileSupportsAccess;
+virStorageFileSupportsBackingChainTraversal;
 virStorageFileSupportsCreate;
 virStorageFileSupportsSecurityDriver;
 virStorageFileUnlink;
diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index ba56f452e9..4011187a7e 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -4448,8 +4448,8 @@ virStorageFileGetBackendForSupportCheck(const virStorageSource *src,
 }


-static int
-virStorageFileSupportsBackingChainTraversal(virStorageSourcePtr src)
+int
+virStorageFileSupportsBackingChainTraversal(const virStorageSource *src)
 {
     virStorageFileBackendPtr backend;
     int rv;
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index 2882bacf3e..b65cd4c382 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -533,6 +533,7 @@ int virStorageFileChown(const virStorageSource *src, uid_t uid, gid_t gid);
 int virStorageFileSupportsSecurityDriver(const virStorageSource *src);
 int virStorageFileSupportsAccess(const virStorageSource *src);
 int virStorageFileSupportsCreate(const virStorageSource *src);
+int virStorageFileSupportsBackingChainTraversal(const virStorageSource *src);

 int virStorageFileGetMetadata(virStorageSourcePtr src,
                               uid_t uid, gid_t gid,
-- 
2.21.0

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