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Current Path: /opt/golang/1.17.2/src/os

📁 ..
📄 dir.go(4.4 KB)
📄 dir_darwin.go(2.92 KB)
📄 dir_plan9.go(2.03 KB)
📄 dir_unix.go(5.02 KB)
📄 dir_windows.go(1.69 KB)
📄 dirent_aix.go(759 B)
📄 dirent_dragonfly.go(1.28 KB)
📄 dirent_freebsd.go(1.16 KB)
📄 dirent_js.go(678 B)
📄 dirent_linux.go(1.18 KB)
📄 dirent_netbsd.go(1.16 KB)
📄 dirent_openbsd.go(1.16 KB)
📄 dirent_solaris.go(759 B)
📄 endian_big.go(278 B)
📄 endian_little.go(360 B)
📄 env.go(3.84 KB)
📄 env_test.go(3.87 KB)
📄 env_unix_test.go(1.35 KB)
📄 error.go(4.84 KB)
📄 error_errno.go(264 B)
📄 error_plan9.go(234 B)
📄 error_posix.go(685 B)
📄 error_test.go(4.92 KB)
📄 error_unix_test.go(1.63 KB)
📄 error_windows_test.go(1.74 KB)
📄 example_test.go(4.79 KB)
📁 exec
📄 exec.go(5.83 KB)
📄 exec_plan9.go(3.29 KB)
📄 exec_posix.go(3.59 KB)
📄 exec_unix.go(2.24 KB)
📄 exec_unix_test.go(785 B)
📄 exec_windows.go(4.87 KB)
📄 executable.go(774 B)
📄 executable_darwin.go(613 B)
📄 executable_dragonfly.go(293 B)
📄 executable_freebsd.go(292 B)
📄 executable_path.go(2.33 KB)
📄 executable_plan9.go(443 B)
📄 executable_procfs.go(951 B)
📄 executable_solaris.go(695 B)
📄 executable_sysctl.go(919 B)
📄 executable_test.go(3.38 KB)
📄 executable_windows.go(641 B)
📄 export_linux_test.go(216 B)
📄 export_test.go(395 B)
📄 export_unix_test.go(381 B)
📄 export_windows_test.go(349 B)
📄 fifo_test.go(1.83 KB)
📄 file.go(21.55 KB)
📄 file_plan9.go(14.9 KB)
📄 file_posix.go(7.1 KB)
📄 file_unix.go(12.24 KB)
📄 file_windows.go(13.68 KB)
📄 getwd.go(2.52 KB)
📄 os_test.go(64.82 KB)
📄 os_unix_test.go(8.55 KB)
📄 os_windows_test.go(32.56 KB)
📄 path.go(2.01 KB)
📄 path_plan9.go(497 B)
📄 path_test.go(2.96 KB)
📄 path_unix.go(1.7 KB)
📄 path_windows.go(5.97 KB)
📄 path_windows_test.go(2.73 KB)
📄 pipe2_bsd.go(680 B)
📄 pipe2_illumos.go(648 B)
📄 pipe_bsd.go(865 B)
📄 pipe_linux.go(1010 B)
📄 pipe_test.go(11.21 KB)
📄 proc.go(2.09 KB)
📄 rawconn.go(1010 B)
📄 rawconn_test.go(1.15 KB)
📄 read_test.go(3.04 KB)
📄 readfrom_linux.go(1.03 KB)
📄 readfrom_linux_test.go(9.58 KB)
📄 readfrom_stub.go(319 B)
📄 removeall_at.go(4.87 KB)
📄 removeall_noat.go(3.28 KB)
📄 removeall_test.go(10.09 KB)
📁 signal
📄 stat.go(733 B)
📄 stat_aix.go(1.18 KB)
📄 stat_darwin.go(1.19 KB)
📄 stat_dragonfly.go(1.15 KB)
📄 stat_freebsd.go(1.17 KB)
📄 stat_js.go(1.22 KB)
📄 stat_linux.go(1.16 KB)
📄 stat_netbsd.go(1.16 KB)
📄 stat_openbsd.go(1.15 KB)
📄 stat_plan9.go(2.3 KB)
📄 stat_solaris.go(1.15 KB)
📄 stat_test.go(5.98 KB)
📄 stat_unix.go(1.37 KB)
📄 stat_windows.go(3.56 KB)
📄 sticky_bsd.go(485 B)
📄 sticky_notbsd.go(469 B)
📄 str.go(817 B)
📄 sys.go(294 B)
📄 sys_aix.go(682 B)
📄 sys_bsd.go(514 B)
📄 sys_js.go(331 B)
📄 sys_linux.go(1.04 KB)
📄 sys_plan9.go(453 B)
📄 sys_solaris.go(265 B)
📄 sys_unix.go(635 B)
📄 sys_windows.go(874 B)
📄 tempfile.go(3.87 KB)
📄 tempfile_test.go(5.4 KB)
📁 testdata
📄 timeout_test.go(13.36 KB)
📄 types.go(2.79 KB)
📄 types_plan9.go(823 B)
📄 types_unix.go(802 B)
📄 types_windows.go(6.32 KB)
📁 user
📄 wait_unimp.go(631 B)
📄 wait_wait6.go(1.52 KB)
📄 wait_waitid.go(1.34 KB)

Editing: removeall_at.go

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris

package os

import (
	"internal/syscall/unix"
	"io"
	"syscall"
)

func removeAll(path string) error {
	if path == "" {
		// fail silently to retain compatibility with previous behavior
		// of RemoveAll. See issue 28830.
		return nil
	}

// The rmdir system call does not permit removing ".",
	// so we don't permit it either.
	if endsWithDot(path) {
		return &PathError{Op: "RemoveAll", Path: path, Err: syscall.EINVAL}
	}

// Simple case: if Remove works, we're done.
	err := Remove(path)
	if err == nil || IsNotExist(err) {
		return nil
	}

// RemoveAll recurses by deleting the path base from
	// its parent directory
	parentDir, base := splitPath(path)

parent, err := Open(parentDir)
	if IsNotExist(err) {
		// If parent does not exist, base cannot exist. Fail silently
		return nil
	}
	if err != nil {
		return err
	}
	defer parent.Close()

if err := removeAllFrom(parent, base); err != nil {
		if pathErr, ok := err.(*PathError); ok {
			pathErr.Path = parentDir + string(PathSeparator) + pathErr.Path
			err = pathErr
		}
		return err
	}
	return nil
}

func removeAllFrom(parent *File, base string) error {
	parentFd := int(parent.Fd())
	// Simple case: if Unlink (aka remove) works, we're done.
	err := unix.Unlinkat(parentFd, base, 0)
	if err == nil || IsNotExist(err) {
		return nil
	}

// EISDIR means that we have a directory, and we need to
	// remove its contents.
	// EPERM or EACCES means that we don't have write permission on
	// the parent directory, but this entry might still be a directory
	// whose contents need to be removed.
	// Otherwise just return the error.
	if err != syscall.EISDIR && err != syscall.EPERM && err != syscall.EACCES {
		return &PathError{Op: "unlinkat", Path: base, Err: err}
	}

// Is this a directory we need to recurse into?
	var statInfo syscall.Stat_t
	statErr := unix.Fstatat(parentFd, base, &statInfo, unix.AT_SYMLINK_NOFOLLOW)
	if statErr != nil {
		if IsNotExist(statErr) {
			return nil
		}
		return &PathError{Op: "fstatat", Path: base, Err: statErr}
	}
	if statInfo.Mode&syscall.S_IFMT != syscall.S_IFDIR {
		// Not a directory; return the error from the unix.Unlinkat.
		return &PathError{Op: "unlinkat", Path: base, Err: err}
	}

// Remove the directory's entries.
	var recurseErr error
	for {
		const reqSize = 1024
		var respSize int

// Open the directory to recurse into
		file, err := openFdAt(parentFd, base)
		if err != nil {
			if IsNotExist(err) {
				return nil
			}
			recurseErr = &PathError{Op: "openfdat", Path: base, Err: err}
			break
		}

for {
			numErr := 0

names, readErr := file.Readdirnames(reqSize)
			// Errors other than EOF should stop us from continuing.
			if readErr != nil && readErr != io.EOF {
				file.Close()
				if IsNotExist(readErr) {
					return nil
				}
				return &PathError{Op: "readdirnames", Path: base, Err: readErr}
			}

respSize = len(names)
			for _, name := range names {
				err := removeAllFrom(file, name)
				if err != nil {
					if pathErr, ok := err.(*PathError); ok {
						pathErr.Path = base + string(PathSeparator) + pathErr.Path
					}
					numErr++
					if recurseErr == nil {
						recurseErr = err
					}
				}
			}

// If we can delete any entry, break to start new iteration.
			// Otherwise, we discard current names, get next entries and try deleting them.
			if numErr != reqSize {
				break
			}
		}

// Removing files from the directory may have caused
		// the OS to reshuffle it. Simply calling Readdirnames
		// again may skip some entries. The only reliable way
		// to avoid this is to close and re-open the
		// directory. See issue 20841.
		file.Close()

// Finish when the end of the directory is reached
		if respSize < reqSize {
			break
		}
	}

// Remove the directory itself.
	unlinkError := unix.Unlinkat(parentFd, base, unix.AT_REMOVEDIR)
	if unlinkError == nil || IsNotExist(unlinkError) {
		return nil
	}

if recurseErr != nil {
		return recurseErr
	}
	return &PathError{Op: "unlinkat", Path: base, Err: unlinkError}
}

// openFdAt opens path relative to the directory in fd.
// Other than that this should act like openFileNolog.
// This acts like openFileNolog rather than OpenFile because
// we are going to (try to) remove the file.
// The contents of this file are not relevant for test caching.
func openFdAt(dirfd int, name string) (*File, error) {
	var r int
	for {
		var e error
		r, e = unix.Openat(dirfd, name, O_RDONLY|syscall.O_CLOEXEC, 0)
		if e == nil {
			break
		}

// See comment in openFileNolog.
		if e == syscall.EINTR {
			continue
		}

return nil, e
	}

if !supportsCloseOnExec {
		syscall.CloseOnExec(r)
	}

return newFile(uintptr(r), name, kindOpenFile), nil
}

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Editing: removeall_at.go

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