50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
//go:build !tinygo
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package sysfs
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import (
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"syscall"
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"unsafe"
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_ "unsafe"
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experimentalsys "github.com/tetratelabs/wazero/experimental/sys"
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)
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const (
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_AT_FDCWD = -0x64
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_UTIME_OMIT = (1 << 30) - 2
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)
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func utimens(path string, atim, mtim int64) experimentalsys.Errno {
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times := timesToTimespecs(atim, mtim)
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if times == nil {
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return 0
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}
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var flags int
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var _p0 *byte
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_p0, err := syscall.BytePtrFromString(path)
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if err == nil {
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err = utimensat(_AT_FDCWD, uintptr(unsafe.Pointer(_p0)), times, flags)
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}
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return experimentalsys.UnwrapOSError(err)
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}
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// On linux, implement futimens via utimensat with the NUL path.
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func futimens(fd uintptr, atim, mtim int64) experimentalsys.Errno {
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times := timesToTimespecs(atim, mtim)
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if times == nil {
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return 0
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}
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return experimentalsys.UnwrapOSError(utimensat(int(fd), 0 /* NUL */, times, 0))
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}
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// utimensat is like syscall.utimensat special-cased to accept a NUL string for the path value.
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func utimensat(dirfd int, strPtr uintptr, times *[2]syscall.Timespec, flags int) (err error) {
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_, _, e1 := syscall.Syscall6(syscall.SYS_UTIMENSAT, uintptr(dirfd), strPtr, uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
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if e1 != 0 {
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err = e1
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}
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return
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}
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