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remove same file copying rage limitation

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This commit is contained in:
chrislu 2022-08-21 17:16:21 -07:00
parent 3a75d7f7aa
commit 63fbf281c7
1 changed files with 31 additions and 34 deletions
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65
weed/mount/weedfs_file_copy_range.go
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@ -65,22 +65,41 @@ func (wfs *WFS) CopyFileRange(cancel <-chan struct{}, in *fuse.CopyFileRangeIn)
return 0, fuse.EISDIR
}
// cannot copy data to an overlapping range of the same file
offInEnd := in.OffIn + in.Len - 1
offOutEnd := in.OffOut + in.Len - 1
if fhIn.inode == fhOut.inode && in.OffIn <= offOutEnd && offInEnd >= in.OffOut {
return 0, fuse.EINVAL
}
glog.V(4).Infof(
"CopyFileRange %s fhIn %d -> %s fhOut %d, %d:%d -> %d:%d",
"CopyFileRange %s fhIn %d -> %s fhOut %d, [%d,%d) -> [%d,%d)",
fhIn.FullPath(), fhIn.fh,
fhOut.FullPath(), fhOut.fh,
in.OffIn, offInEnd,
in.OffOut, offOutEnd,
in.OffIn, in.OffIn+in.Len,
in.OffOut, in.OffOut+in.Len,
)
data, totalRead, err := readDataByFileHandle(fhIn, in)
if err != nil {
glog.Warningf("file handle read %s %d: %v", fhIn.FullPath(), totalRead, err)
return 0, fuse.EIO
}
if totalRead == 0 {
return 0, fuse.OK
}
// put data at the specified offset in target file
fhOut.dirtyPages.writerPattern.MonitorWriteAt(int64(in.OffOut), int(in.Len))
fhOut.entry.Content = nil
fhOut.dirtyPages.AddPage(int64(in.OffOut), data[:totalRead], fhOut.dirtyPages.writerPattern.IsSequentialMode())
fhOut.entry.Attributes.FileSize = uint64(max(int64(in.OffOut)+totalRead, int64(fhOut.entry.Attributes.FileSize)))
fhOut.dirtyMetadata = true
written = uint32(totalRead)
// detect mime type
if written > 0 && in.OffOut <= 512 {
fhOut.contentType = http.DetectContentType(data[:min(totalRead, 512)-1])
}
return written, fuse.OK
}
func readDataByFileHandle(fhIn *FileHandle, in *fuse.CopyFileRangeIn) ([]byte, int64, error) {
// read data from source file
fhIn.lockForRead(int64(in.OffIn), int(in.Len))
defer fhIn.unlockForRead(int64(in.OffIn), int(in.Len))
@ -94,27 +113,5 @@ func (wfs *WFS) CopyFileRange(cancel <-chan struct{}, in *fuse.CopyFileRangeIn)
if err == io.EOF {
err = nil
}
if err != nil {
glog.Warningf("file handle read %s %d: %v", fhIn.FullPath(), totalRead, err)
return 0, fuse.EIO
}
if totalRead == 0 {
return 0, fuse.OK
}
// put data at the specified offset in target file
fhOut.dirtyPages.writerPattern.MonitorWriteAt(int64(in.OffOut), int(in.Len))
fhOut.entry.Content = nil
fhOut.dirtyPages.AddPage(int64(in.OffOut), data, fhOut.dirtyPages.writerPattern.IsSequentialMode())
fhOut.entry.Attributes.FileSize = uint64(max(int64(in.OffOut)+totalRead, int64(fhOut.entry.Attributes.FileSize)))
fhOut.dirtyMetadata = true
written = uint32(totalRead)
// detect mime type
if written > 0 && in.OffOut <= 512 {
fhOut.contentType = http.DetectContentType(data[:min(totalRead, 512)-1])
}
return written, fuse.OK
return data, totalRead, err
}