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storage: Rename btrfsCloneFile to support other filesystems.

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This commit renames and adds other macros to support aother filesystems
when a reflink is performed. After that, XFS filesystems (and others)
with reflink support will be able to clone.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1565004

Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Julio Faracco 2018-07-06 10:43:01 -03:00 committed by Michal Privoznik
parent 2e11298f93
commit 8ed874b39b
1 changed files with 13 additions and 6 deletions
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19
src/storage/storage_util.c
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@ -48,6 +48,12 @@
#if HAVE_LINUX_BTRFS_H #if HAVE_LINUX_BTRFS_H
# include <linux/btrfs.h> # include <linux/btrfs.h>
# define REFLINK_IOC_CLONE BTRFS_IOC_CLONE
#elif HAVE_XFS_XFS_H
# include <xfs/xfs.h>
# define REFLINK_IOC_CLONE XFS_IOC_CLONE
#elif defined(FICLONE)
# define REFLINK_IOC_CLONE FICLONE
#endif #endif
#include "datatypes.h" #include "datatypes.h"
@ -80,22 +86,23 @@ VIR_LOG_INIT("storage.storage_util");
* Perform the O(1) btrfs clone operation, if possible. * Perform the O(1) btrfs clone operation, if possible.
* Upon success, return 0. Otherwise, return -1 and set errno. * Upon success, return 0. Otherwise, return -1 and set errno.
*/ */
#if HAVE_LINUX_BTRFS_H #ifdef REFLINK_IOC_CLONE
static inline int static inline int
btrfsCloneFile(int dest_fd, int src_fd) reflinkCloneFile(int dest_fd, int src_fd)
{ {
return ioctl(dest_fd, BTRFS_IOC_CLONE, src_fd); return ioctl(dest_fd, REFLINK_IOC_CLONE, src_fd);
} }
#else #else
static inline int static inline int
btrfsCloneFile(int dest_fd ATTRIBUTE_UNUSED, reflinkCloneFile(int dest_fd ATTRIBUTE_UNUSED,
int src_fd ATTRIBUTE_UNUSED) int src_fd ATTRIBUTE_UNUSED)
{ {
errno = ENOTSUP; errno = ENOTSUP;
return -1; return -1;
} }
#endif #endif
static int ATTRIBUTE_NONNULL(2) static int ATTRIBUTE_NONNULL(2)
virStorageBackendCopyToFD(virStorageVolDefPtr vol, virStorageBackendCopyToFD(virStorageVolDefPtr vol,
virStorageVolDefPtr inputvol, virStorageVolDefPtr inputvol,
@ -142,7 +149,7 @@ virStorageBackendCopyToFD(virStorageVolDefPtr vol,
} }
if (reflink_copy) { if (reflink_copy) {
if (btrfsCloneFile(fd, inputfd) < 0) { if (reflinkCloneFile(fd, inputfd) < 0) {
ret = -errno; ret = -errno;
virReportSystemError(errno, virReportSystemError(errno,
_("failed to clone files from '%s'"), _("failed to clone files from '%s'"),