// license that can be found in the LICENSE file.

//go:build unix

package runtime

const canCreateFile = true

// create returns an fd to a write-only file.
func create(name *byte, perm int32) int32 {
	return open(name, _O_CREAT|_O_WRONLY|_O_TRUNC, perm)

	Open(name string) (*os.File, error)
	OpenFile(name string, flag int, perm os.FileMode) (*os.File, error)
	Rename(oldpath, newpath string) error
}

// RealOS is used to dispatch the real system level operations.
type RealOS struct{}

// MkdirAll will call os.MkdirAll to create a directory.
func (RealOS) MkdirAll(path string, perm os.FileMode) error {
	return os.MkdirAll(path, perm)
}

// Symlink will call os.Symlink to create a symbolic link.

	show("Int32N(10)", r.Int32N(10), r.Int32N(10), r.Int32N(10))
	show("Int64N(10)", r.Int64N(10), r.Int64N(10), r.Int64N(10))

	// Perm generates a random permutation of the numbers [0, n).
	show("Perm", r.Perm(5), r.Perm(5), r.Perm(5))
	// Output:
	// Float32     0.95955694          0.8076733            0.8135684
	// Float64     0.4297927436037299  0.797802349388613    0.3883664855410056

		for len(suffix) > 0 && suffix[0] == filepath.Separator {
			suffix = suffix[1:]
		}
		dstPath := filepath.Join(dstRoot, suffix)

		perm := info.Mode() & os.ModePerm
		if info.Mode()&os.ModeSymlink != 0 {
			info, err = os.Stat(srcPath)
			if err != nil {
				return err
			}
			perm = info.Mode() & os.ModePerm
		}

		// Always copy directories (don't symlink them).

	_ "unsafe" // for linkname
)

func Unlinkat(dirfd int, path string, flags int) error {
	return unlinkat(dirfd, path, flags)
}

func Openat(dirfd int, path string, flags int, perm uint32) (int, error) {
	return openat(dirfd, path, flags, perm)
}

func Fstatat(dirfd int, path string, stat *syscall.Stat_t, flags int) error {
	return fstatat(dirfd, path, stat, flags)
}

//go:linkname unlinkat syscall.unlinkat

      ConstOp perm =
          dyn_cast_or_null<ConstOp>(transpose.getOperand(1).getDefiningOp());
      if (!perm) return;

      // With the same permutation indices.
      auto dense_elem_attr = mlir::dyn_cast<DenseElementsAttr>(perm.getValue());
      if (!dense_elem_attr) return;

      if (!permutation_op) permutation_op = perm;

		return errno
	}

	return nil
}

func Openat(dirfd int, path string, flags int, perm uint32) (int, error) {
	p, err := syscall.BytePtrFromString(path)
	if err != nil {
		return 0, err
	}

	fd, _, errno := syscall6(uintptr(unsafe.Pointer(&procOpenat)), 4, uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(flags), uintptr(perm), 0, 0)
	if errno != 0 {
		return 0, errno
	}

	return int(fd), nil
}

// license that can be found in the LICENSE file.

//go:build unix || (js && wasm)

package os

import (
	"internal/poll"
	"syscall"
)

func open(path string, flag int, perm uint32) (int, poll.SysFile, error) {
	fd, err := syscall.Open(path, flag, perm)
	return fd, poll.SysFile{}, err

// along with any necessary parents, and returns nil,
// or else returns an error.
// The permission bits perm (before umask) are used for all
// directories that MkdirAll creates.
// If path is already a directory, MkdirAll does nothing
// and returns nil.
func MkdirAll(path string, perm FileMode) error {
	// Fast path: if we can tell whether path is a directory or file, stop with success or error.
	dir, err := Stat(path)

		// the specific bits we need.
		err := os.Chmod(dir, perm)
		if err != nil {
			return err
		}

		fileinfo, err = os.Lstat(dir)
		if err != nil {
			return err
		}

		if fileinfo.Mode().Perm() != perm.Perm() {
			klog.Errorf("Expected directory %q permissions to be: %s; got: %s", dir, perm.Perm(), fileinfo.Mode().Perm())
		}
	}

	return nil
}