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38 lines
663 B
38 lines
663 B
//go:build linux
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package fuse
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import (
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"syscall"
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)
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// File allocation support for Linux
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const (
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// Fallocate flags
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FALLOC_FL_KEEP_SIZE = 0x01
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FALLOC_FL_PUNCH_HOLE = 0x02
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FALLOC_FL_NO_HIDE_STALE = 0x04
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FALLOC_FL_COLLAPSE_RANGE = 0x08
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FALLOC_FL_ZERO_RANGE = 0x10
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FALLOC_FL_INSERT_RANGE = 0x20
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FALLOC_FL_UNSHARE_RANGE = 0x40
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)
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func fallocateFile(fd int, mode int, offset int64, length int64) error {
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_, _, errno := syscall.Syscall6(syscall.SYS_FALLOCATE,
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uintptr(fd),
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uintptr(mode),
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uintptr(offset),
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uintptr(length),
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0, 0)
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if errno != 0 {
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return errno
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}
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return nil
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}
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func isFallocateSupported() bool {
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return true
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}
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