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|
package sysfs
import (
"syscall"
_ "unsafe"
experimentalsys "github.com/tetratelabs/wazero/experimental/sys"
)
const (
_AT_FDCWD = -0x2
_AT_SYMLINK_NOFOLLOW = 0x0020
_UTIME_OMIT = -2
)
//go:noescape
//go:linkname utimensat syscall.utimensat
func utimensat(dirfd int, path string, times *[2]syscall.Timespec, flags int) error
func utimens(path string, atim, mtim int64) experimentalsys.Errno {
times := timesToTimespecs(atim, mtim)
if times == nil {
return 0
}
var flags int
return experimentalsys.UnwrapOSError(utimensat(_AT_FDCWD, path, times, flags))
}
func futimens(fd uintptr, atim, mtim int64) experimentalsys.Errno {
times := timesToTimespecs(atim, mtim)
if times == nil {
return 0
}
_p0 := timesToPtr(times)
// Warning: futimens only exists since High Sierra (10.13).
_, _, e1 := syscall_syscall6(libc_futimens_trampoline_addr, fd, uintptr(_p0), 0, 0, 0, 0)
return experimentalsys.UnwrapOSError(e1)
}
// libc_futimens_trampoline_addr is the address of the
// `libc_futimens_trampoline` symbol, defined in `futimens_darwin.s`.
//
// We use this to invoke the syscall through syscall_syscall6 imported below.
var libc_futimens_trampoline_addr uintptr
// Imports the futimens symbol from libc as `libc_futimens`.
//
// Note: CGO mechanisms are used in darwin regardless of the CGO_ENABLED value
// or the "cgo" build flag. See /RATIONALE.md for why.
//go:cgo_import_dynamic libc_futimens futimens "/usr/lib/libSystem.B.dylib"
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