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-rw-r--r--fs/cifs/cifsglob.h3
-rw-r--r--fs/cifs/cifspdu.h2
-rw-r--r--fs/cifs/ioctl.c16
-rw-r--r--fs/cifs/smb2ops.c48
-rw-r--r--fs/cifs/smb2pdu.h8
-rw-r--r--fs/cifs/smbfsctl.h1
6 files changed, 75 insertions, 3 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index a0212ec6f701..81194e6c7601 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -390,6 +390,9 @@ struct smb_version_operations {
int (*clone_range)(const unsigned int, struct cifsFileInfo *src_file,
struct cifsFileInfo *target_file, u64 src_off, u64 len,
u64 dest_off);
+ int (*duplicate_extents)(const unsigned int, struct cifsFileInfo *src,
+ struct cifsFileInfo *target_file, u64 src_off, u64 len,
+ u64 dest_off);
int (*validate_negotiate)(const unsigned int, struct cifs_tcon *);
ssize_t (*query_all_EAs)(const unsigned int, struct cifs_tcon *,
const unsigned char *, const unsigned char *, char *,
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 998a66ffe01e..47b030da0781 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -2255,6 +2255,8 @@ typedef struct {
/* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */
+#define FILE_SUPPORTS_SPARSE_VDL 0x10000000 /* faster nonsparse extend */
+#define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */
#define FILE_SUPPORT_INTEGRITY_STREAMS 0x04000000
#define FILE_SUPPORTS_USN_JOURNAL 0x02000000
#define FILE_SUPPORTS_OPEN_BY_FILE_ID 0x01000000
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 8b7898b7670f..7843b19ef5be 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -31,12 +31,14 @@
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"
+#include <linux/btrfs.h>
#define CIFS_IOCTL_MAGIC 0xCF
#define CIFS_IOC_COPYCHUNK_FILE _IOW(CIFS_IOCTL_MAGIC, 3, int)
static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
- unsigned long srcfd, u64 off, u64 len, u64 destoff)
+ unsigned long srcfd, u64 off, u64 len, u64 destoff,
+ bool dup_extents)
{
int rc;
struct cifsFileInfo *smb_file_target = dst_file->private_data;
@@ -109,9 +111,14 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
truncate_inode_pages_range(&target_inode->i_data, destoff,
PAGE_CACHE_ALIGN(destoff + len)-1);
- if (target_tcon->ses->server->ops->clone_range)
+ if (dup_extents && target_tcon->ses->server->ops->duplicate_extents)
+ rc = target_tcon->ses->server->ops->duplicate_extents(xid,
+ smb_file_src, smb_file_target, off, len, destoff);
+ else if (!dup_extents && target_tcon->ses->server->ops->clone_range)
rc = target_tcon->ses->server->ops->clone_range(xid,
smb_file_src, smb_file_target, off, len, destoff);
+ else
+ rc = -EOPNOTSUPP;
/* force revalidate of size and timestamps of target file now
that target is updated on the server */
@@ -205,7 +212,10 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
}
break;
case CIFS_IOC_COPYCHUNK_FILE:
- rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0);
+ rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0, false);
+ break;
+ case BTRFS_IOC_CLONE:
+ rc = cifs_ioctl_clone(xid, filep, arg, 0, 0, 0, true);
break;
default:
cifs_dbg(FYI, "unsupported ioctl\n");
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index c7d228c4006a..b1e9c0f1b24c 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -806,6 +806,53 @@ smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
cfile->fid.volatile_fid, cfile->pid, &eof, false);
}
+#ifdef CONFIG_CIFS_SMB311
+static int
+smb2_duplicate_extents(const unsigned int xid,
+ struct cifsFileInfo *srcfile,
+ struct cifsFileInfo *trgtfile, u64 src_off,
+ u64 len, u64 dest_off)
+{
+ int rc;
+ unsigned int ret_data_len;
+ char *retbuf = NULL;
+ struct duplicate_extents_to_file dup_ext_buf;
+ struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
+
+ /* server fileays advertise duplicate extent support with this flag */
+ if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
+ FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
+ return -EOPNOTSUPP;
+
+ dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
+ dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
+ dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
+ dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
+ dup_ext_buf.ByteCount = cpu_to_le64(len);
+ cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
+ src_off, dest_off, len);
+
+ rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
+ if (rc)
+ goto duplicate_extents_out;
+
+ rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
+ trgtfile->fid.volatile_fid,
+ FSCTL_DUPLICATE_EXTENTS_TO_FILE,
+ true /* is_fsctl */, (char *)&dup_ext_buf,
+ sizeof(struct duplicate_extents_to_file),
+ (char **)&retbuf,
+ &ret_data_len);
+
+ if (ret_data_len > 0)
+ cifs_dbg(FYI, "non-zero response length in duplicate extents");
+
+duplicate_extents_out:
+ return rc;
+}
+#endif /* CONFIG_CIFS_SMB311 */
+
+
static int
smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
struct cifsFileInfo *cfile)
@@ -1714,6 +1761,7 @@ struct smb_version_operations smb311_operations = {
.create_lease_buf = smb3_create_lease_buf,
.parse_lease_buf = smb3_parse_lease_buf,
.clone_range = smb2_clone_range,
+ .duplicate_extents = smb2_duplicate_extents,
/* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
.wp_retry_size = smb2_wp_retry_size,
.dir_needs_close = smb2_dir_needs_close,
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 725283a7d887..8e7bbe54ebb0 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -654,6 +654,14 @@ struct compress_ioctl {
__le16 CompressionState; /* See cifspdu.h for possible flag values */
} __packed;
+struct duplicate_extents_to_file {
+ __u64 PersistentFileHandle; /* source file handle, opaque endianness */
+ __u64 VolatileFileHandle;
+ __le64 SourceFileOffset;
+ __le64 TargetFileOffset;
+ __le64 ByteCount; /* Bytes to be copied */
+} __packed;
+
struct smb2_ioctl_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 57 */
diff --git a/fs/cifs/smbfsctl.h b/fs/cifs/smbfsctl.h
index 83efa59535be..d098da678668 100644
--- a/fs/cifs/smbfsctl.h
+++ b/fs/cifs/smbfsctl.h
@@ -78,6 +78,7 @@
#define FSCTL_QUERY_ALLOCATED_RANGES 0x000940CF /* BB add struct */
#define FSCTL_SET_DEFECT_MANAGEMENT 0x00098134 /* BB add struct */
#define FSCTL_FILE_LEVEL_TRIM 0x00098208 /* BB add struct */
+#define FSCTL_DUPLICATE_EXTENTS_TO_FILE 0x00098344
#define FSCTL_SIS_LINK_FILES 0x0009C104
#define FSCTL_PIPE_PEEK 0x0011400C /* BB add struct */
#define FSCTL_PIPE_TRANSCEIVE 0x0011C017 /* BB add struct */
generated by cgit (git 2.34.1) at 2024-05-29 23:35:11 +0000