mirror of
https://github.com/kovidgoyal/kitty
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30 lines
552 B
Go
30 lines
552 B
Go
// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
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package shm
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import (
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"errors"
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"fmt"
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"syscall"
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"unsafe"
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"golang.org/x/sys/unix"
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)
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var _ = fmt.Print
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func Fallocate_simple(fd int, size int64) (err error) {
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store := &syscall.Fstore_t{
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Flags: syscall.F_ALLOCATEALL,
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Posmode: syscall.F_PEOFPOSMODE,
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Offset: 0,
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Length: size,
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}
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for {
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if _, _, err = syscall.Syscall(syscall.SYS_FCNTL, uintptr(fd), syscall.F_PREALLOCATE, uintptr(unsafe.Pointer(store))); !errors.Is(err, unix.EINTR) {
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return err
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}
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}
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}
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