mirror of https://github.com/rclone/rclone
50 lines
1011 B
Go
50 lines
1011 B
Go
// Copyright 2016 the Go-FUSE Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package fuse
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import (
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"os"
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"syscall"
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"unsafe"
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)
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// TODO - move these into Go's syscall package.
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func sys_writev(fd int, iovecs *syscall.Iovec, cnt int) (n int, err error) {
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n1, _, e1 := syscall.Syscall(
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syscall.SYS_WRITEV,
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uintptr(fd), uintptr(unsafe.Pointer(iovecs)), uintptr(cnt))
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n = int(n1)
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if e1 != 0 {
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err = syscall.Errno(e1)
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}
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return n, err
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}
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func writev(fd int, packet [][]byte) (n int, err error) {
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iovecs := make([]syscall.Iovec, 0, len(packet))
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for _, v := range packet {
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if len(v) == 0 {
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continue
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}
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vec := syscall.Iovec{
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Base: &v[0],
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}
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vec.SetLen(len(v))
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iovecs = append(iovecs, vec)
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}
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sysErr := handleEINTR(func() error {
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var err error
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n, err = sys_writev(fd, &iovecs[0], len(iovecs))
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return err
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})
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if sysErr != nil {
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err = os.NewSyscallError("writev", sysErr)
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}
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return n, err
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}
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