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Add new generic_attributes attribute in Node. Use the generic attributes to add support for creation time and file attributes like hidden, readonly, encrypted in windows. Handle permission errors for readonly files in windows. Handle backup and restore of encrypted attributes using windows system calls.
141 lines
4.9 KiB
Go
141 lines
4.9 KiB
Go
package fs
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import (
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"os"
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"path/filepath"
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"time"
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)
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// Mkdir creates a new directory with the specified name and permission bits.
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// If there is an error, it will be of type *PathError.
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func Mkdir(name string, perm os.FileMode) error {
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return os.Mkdir(fixpath(name), perm)
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}
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// MkdirAll creates a directory named path, along with any necessary parents,
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// and returns nil, or else returns an error. The permission bits perm are used
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// for all directories that MkdirAll creates. If path is already a directory,
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// MkdirAll does nothing and returns nil.
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func MkdirAll(path string, perm os.FileMode) error {
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return os.MkdirAll(fixpath(path), perm)
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}
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// Readlink returns the destination of the named symbolic link.
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// If there is an error, it will be of type *PathError.
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func Readlink(name string) (string, error) {
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return os.Readlink(fixpath(name))
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}
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// Remove removes the named file or directory.
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// If there is an error, it will be of type *PathError.
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func Remove(name string) error {
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return os.Remove(fixpath(name))
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}
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// RemoveAll removes path and any children it contains.
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// It removes everything it can but returns the first error
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// it encounters. If the path does not exist, RemoveAll
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// returns nil (no error).
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func RemoveAll(path string) error {
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return os.RemoveAll(fixpath(path))
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}
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// Rename renames (moves) oldpath to newpath.
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// If newpath already exists, Rename replaces it.
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// OS-specific restrictions may apply when oldpath and newpath are in different directories.
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// If there is an error, it will be of type *LinkError.
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func Rename(oldpath, newpath string) error {
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return os.Rename(fixpath(oldpath), fixpath(newpath))
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}
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// Symlink creates newname as a symbolic link to oldname.
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// If there is an error, it will be of type *LinkError.
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func Symlink(oldname, newname string) error {
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return os.Symlink(oldname, fixpath(newname))
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}
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// Link creates newname as a hard link to oldname.
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// If there is an error, it will be of type *LinkError.
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func Link(oldname, newname string) error {
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return os.Link(fixpath(oldname), fixpath(newname))
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}
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// Stat returns a FileInfo structure describing the named file.
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// If there is an error, it will be of type *PathError.
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func Stat(name string) (os.FileInfo, error) {
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return os.Stat(fixpath(name))
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}
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// Lstat returns the FileInfo structure describing the named file.
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// If the file is a symbolic link, the returned FileInfo
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// describes the symbolic link. Lstat makes no attempt to follow the link.
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// If there is an error, it will be of type *PathError.
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func Lstat(name string) (os.FileInfo, error) {
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return os.Lstat(fixpath(name))
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}
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// Create creates the named file with mode 0666 (before umask), truncating
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// it if it already exists. If successful, methods on the returned
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// File can be used for I/O; the associated file descriptor has mode
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// O_RDWR.
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// If there is an error, it will be of type *PathError.
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func Create(name string) (*os.File, error) {
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return os.Create(fixpath(name))
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}
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// Open opens a file for reading.
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func Open(name string) (File, error) {
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return os.Open(fixpath(name))
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}
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// OpenFile is the generalized open call; most users will use Open
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// or Create instead. It opens the named file with specified flag
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// (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
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// methods on the returned File can be used for I/O.
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// If there is an error, it will be of type *PathError.
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func OpenFile(name string, flag int, perm os.FileMode) (*os.File, error) {
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return os.OpenFile(fixpath(name), flag, perm)
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}
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// Walk walks the file tree rooted at root, calling walkFn for each file or
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// directory in the tree, including root. All errors that arise visiting files
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// and directories are filtered by walkFn. The files are walked in lexical
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// order, which makes the output deterministic but means that for very
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// large directories Walk can be inefficient.
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// Walk does not follow symbolic links.
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func Walk(root string, walkFn filepath.WalkFunc) error {
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return filepath.Walk(fixpath(root), walkFn)
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}
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// RemoveIfExists removes a file, returning no error if it does not exist.
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func RemoveIfExists(filename string) error {
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err := os.Remove(filename)
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if err != nil && os.IsNotExist(err) {
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err = nil
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}
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return err
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}
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// Chtimes changes the access and modification times of the named file,
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// similar to the Unix utime() or utimes() functions.
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//
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// The underlying filesystem may truncate or round the values to a less
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// precise time unit. If there is an error, it will be of type *PathError.
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func Chtimes(name string, atime time.Time, mtime time.Time) error {
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return os.Chtimes(fixpath(name), atime, mtime)
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}
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// IsAccessDenied checks if the error is due to permission error.
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func IsAccessDenied(err error) bool {
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return os.IsPermission(err)
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}
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// ResetPermissions resets the permissions of the file at the specified path
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func ResetPermissions(path string) error {
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// Set the default file permissions
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if err := os.Chmod(path, 0600); err != nil {
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return err
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}
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return nil
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}
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