[PATCH v2 0/1] MR9732: ntdll: Support FSCTL_DUPLICATE_EXTENTS_TO_FILE

[nikita pushkarev (＠strudelll)]

Implement FSCTL_DUPLICATE_EXTENTS_TO_FILE handling in ntdll on Linux by wiring the IOCTL to FICLONERANGE/FICLONE where available and returning STATUS_INVALID_DEVICE_REQUEST otherwise. Adds the necessary constants/types when missing.

--
  v2: ntdll: Support FSCTL_DUPLICATE_EXTENTS_TO_FILE
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/9732

[PATCH v2 1/1] ntdll: Support FSCTL_DUPLICATE_EXTENTS_TO_FILE

[strudelll]

From: strudelll <[e-mail]>

---
 dlls/ntdll/unix/file.c | 59 ++++++++++++++++++++++++++++++++++++++++++
 include/winioctl.h     | 10 +++++++
 2 files changed, 69 insertions(+)

diff --git a/dlls/ntdll/unix/file.c b/dlls/ntdll/unix/file.c
index fdc0c32fc4f..b6641f31eb9 100644
--- a/dlls/ntdll/unix/file.c
+++ b/dlls/ntdll/unix/file.c
@@ -52,6 +52,9 @@
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <sys/ioctl.h>
+#ifdef __linux__
+# include <linux/fs.h>
+#endif
 #ifdef HAVE_SYS_ATTR_H
 #include <sys/attr.h>
 #endif
@@ -6643,6 +6646,57 @@ static void ignore_server_ioctl_struct_holes( ULONG code, const void *in_buffer,
 #endif
 }
 
+static NTSTATUS duplicate_extents_to_file( HANDLE dst_handle, const void *in_buf, ULONG in_len )
+{
+    const DUPLICATE_EXTENTS_DATA *data = in_buf;
+    NTSTATUS status;
+    int dst_fd = -1, src_fd = -1;
+    int needs_close_dst = 0, needs_close_src = 0;
+
+    if (!data || in_len < sizeof(*data)) return STATUS_BUFFER_TOO_SMALL;
+
+    status = server_get_unix_fd( dst_handle, FILE_WRITE_DATA, &dst_fd, &needs_close_dst, NULL, NULL );
+    if (status) return status;
+    status = server_get_unix_fd( data->FileHandle, FILE_READ_DATA, &src_fd, &needs_close_src, NULL, NULL );
+    if (status) goto done;
+
+#ifdef FICLONERANGE
+    struct file_clone_range r =
+    {
+        .src_fd      = src_fd,
+        .src_offset  = data->SourceFileOffset.QuadPart,
+        .src_length  = data->ByteCount.QuadPart,
+        .dest_offset = data->TargetFileOffset.QuadPart,
+    };
+
+    if (!ioctl( dst_fd, FICLONERANGE, &r )) { status = STATUS_SUCCESS; goto done; }
+    if (!(errno == EOPNOTSUPP || errno == ENOTTY || errno == EXDEV || errno == EINVAL))
+    {
+        status = errno_to_status( errno );
+        goto done;
+    }
+#endif
+
+#ifdef FICLONE
+    if (!data->SourceFileOffset.QuadPart && !data->TargetFileOffset.QuadPart)
+    {
+        if (!ioctl( dst_fd, FICLONE, src_fd )) { status = STATUS_SUCCESS; goto done; }
+        if (!(errno == EOPNOTSUPP || errno == ENOTTY || errno == EXDEV))
+        {
+            status = errno_to_status( errno );
+            goto done;
+        }
+    }
+#endif
+
+    status = STATUS_INVALID_DEVICE_REQUEST;
+
+done:
+    if (needs_close_src && src_fd != -1) close( src_fd );
+    if (needs_close_dst && dst_fd != -1) close( dst_fd );
+    return status;
+}
+
 
 /******************************************************************************
  *              NtFsControlFile   (NTDLL.@)
@@ -6733,6 +6787,11 @@ NTSTATUS WINAPI NtFsControlFile( HANDLE handle, HANDLE event, PIO_APC_ROUTINE ap
         break;
     }
 
+    case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
+        status = duplicate_extents_to_file( handle, in_buffer, in_size );
+        break;
+
+
     case FSCTL_SET_SPARSE:
         TRACE("FSCTL_SET_SPARSE: Ignoring request\n");
         status = STATUS_SUCCESS;
diff --git a/include/winioctl.h b/include/winioctl.h
index 08fb307a321..3bb26f4dc42 100644
--- a/include/winioctl.h
+++ b/include/winioctl.h
@@ -315,6 +315,16 @@
 #define FSCTL_DELETE_CORRUPTED_REFS_CONTAINER    CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 253, METHOD_BUFFERED, FILE_ANY_ACCESS)
 #define FSCTL_SCRUB_UNDISCOVERABLE_ID            CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 254, METHOD_BUFFERED, FILE_ANY_ACCESS)
 
+#ifndef _DUPLICATE_EXTENTS_DATA_DEFINED
+typedef struct _DUPLICATE_EXTENTS_DATA {
+    HANDLE         FileHandle;
+    LARGE_INTEGER  SourceFileOffset;
+    LARGE_INTEGER  TargetFileOffset;
+    LARGE_INTEGER  ByteCount;
+} DUPLICATE_EXTENTS_DATA, *PDUPLICATE_EXTENTS_DATA;
+#define _DUPLICATE_EXTENTS_DATA_DEFINED
+#endif
+
 #define FSCTL_PIPE_ASSIGN_EVENT         CTL_CODE(FILE_DEVICE_NAMED_PIPE, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
 #define FSCTL_PIPE_DISCONNECT           CTL_CODE(FILE_DEVICE_NAMED_PIPE, 1, METHOD_BUFFERED, FILE_ANY_ACCESS)
 #define FSCTL_PIPE_LISTEN               CTL_CODE(FILE_DEVICE_NAMED_PIPE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/9732