mirror of https://github.com/ceph/go-ceph
43 lines
904 B
Go
43 lines
904 B
Go
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//go:build ceph_preview
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package striper
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// #cgo LDFLAGS: -lrados -lradosstriper
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// #include <stdlib.h>
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// #include <radosstriper/libradosstriper.h>
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import "C"
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import (
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"unsafe"
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)
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// Read bytes into data from the striped object at the specified offset.
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//
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// Implements:
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//
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// int rados_striper_read(rados_striper_t striper,
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// const char *soid,
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// const char *buf,
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// size_t len,
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// uint64_t off);
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func (s *Striper) Read(soid string, data []byte, offset uint64) (int, error) {
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csoid := C.CString(soid)
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defer C.free(unsafe.Pointer(csoid))
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var bufptr *C.char
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if len(data) > 0 {
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bufptr = (*C.char)(unsafe.Pointer(&data[0]))
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}
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ret := C.rados_striper_read(
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s.striper,
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csoid,
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bufptr,
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C.size_t(len(data)),
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C.uint64_t(offset))
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if ret >= 0 {
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return int(ret), nil
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}
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return 0, getError(ret)
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}
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