diff options
Diffstat (limited to 'libgo/go/os/file_plan9.go')
| -rw-r--r-- | libgo/go/os/file_plan9.go | 54 |
1 files changed, 33 insertions, 21 deletions
diff --git a/libgo/go/os/file_plan9.go b/libgo/go/os/file_plan9.go index cb0e9ef9289..db366a07cc9 100644 --- a/libgo/go/os/file_plan9.go +++ b/libgo/go/os/file_plan9.go @@ -5,14 +5,11 @@ package os import ( - "errors" "runtime" "syscall" "time" ) -var ErrPlan9 = errors.New("unimplemented on Plan 9") - // File represents an open file descriptor. type File struct { *file @@ -137,8 +134,8 @@ func OpenFile(name string, flag int, perm FileMode) (file *File, err error) { // Close closes the File, rendering it unusable for I/O. // It returns an error, if any. -func (file *File) Close() error { - return file.file.close() +func (f *File) Close() error { + return f.file.close() } func (file *file) close() error { @@ -159,8 +156,8 @@ func (file *file) close() error { } // Stat returns the FileInfo structure describing file. -// It returns the FileInfo and an error, if any. -func (f *File) Stat() (FileInfo, error) { +// If there is an error, it will be of type *PathError. +func (f *File) Stat() (fi FileInfo, err error) { d, err := dirstat(f) if err != nil { return nil, err @@ -170,8 +167,9 @@ func (f *File) Stat() (FileInfo, error) { // Truncate changes the size of the file. // It does not change the I/O offset. +// If there is an error, it will be of type *PathError. func (f *File) Truncate(size int64) error { - var d Dir + var d dir d.Null() d.Length = uint64(size) @@ -187,7 +185,7 @@ const chmodMask = uint32(syscall.DMAPPEND | syscall.DMEXCL | syscall.DMTMP | Mod // Chmod changes the mode of the file to mode. // If there is an error, it will be of type *PathError. func (f *File) Chmod(mode FileMode) error { - var d Dir + var d dir odir, e := dirstat(f) if e != nil { @@ -209,7 +207,7 @@ func (f *File) Sync() (err error) { return ErrInvalid } - var d Dir + var d dir d.Null() if e := syscall.Fwstat(f.fd, pdir(nil, &d)); e != nil { @@ -255,7 +253,7 @@ func (f *File) seek(offset int64, whence int) (ret int64, err error) { // If the file is a symbolic link, it changes the size of the link's target. // If there is an error, it will be of type *PathError. func Truncate(name string, size int64) error { - var d Dir + var d dir d.Null() d.Length = uint64(size) @@ -277,7 +275,7 @@ func Remove(name string) error { // Rename renames a file. func Rename(oldname, newname string) error { - var d Dir + var d dir d.Null() d.Name = newname @@ -289,9 +287,10 @@ func Rename(oldname, newname string) error { } // Chmod changes the mode of the named file to mode. +// If the file is a symbolic link, it changes the mode of the link's target. // If there is an error, it will be of type *PathError. func Chmod(name string, mode FileMode) error { - var d Dir + var d dir odir, e := dirstat(name) if e != nil { @@ -310,8 +309,9 @@ func Chmod(name string, mode FileMode) error { // // The underlying filesystem may truncate or round the values to a // less precise time unit. +// If there is an error, it will be of type *PathError. func Chtimes(name string, atime time.Time, mtime time.Time) error { - var d Dir + var d dir d.Null() d.Atime = uint32(atime.Unix()) @@ -323,6 +323,8 @@ func Chtimes(name string, atime time.Time, mtime time.Time) error { return nil } +// Pipe returns a connected pair of Files; reads from r return bytes +// written to w. It returns the files and an error, if any. func Pipe() (r *File, w *File, err error) { var p [2]int @@ -338,32 +340,42 @@ func Pipe() (r *File, w *File, err error) { // not supported on Plan 9 -// Link creates a hard link. +// Link creates newname as a hard link to the oldname file. // If there is an error, it will be of type *LinkError. func Link(oldname, newname string) error { - return &LinkError{"link", oldname, newname, ErrPlan9} + return &LinkError{"link", oldname, newname, syscall.EPLAN9} } // Symlink creates newname as a symbolic link to oldname. // If there is an error, it will be of type *LinkError. func Symlink(oldname, newname string) error { - return &LinkError{"symlink", oldname, newname, ErrPlan9} + return &LinkError{"symlink", oldname, newname, syscall.EPLAN9} } +// Readlink returns the destination of the named symbolic link. +// If there is an error, it will be of type *PathError. func Readlink(name string) (string, error) { - return "", ErrPlan9 + return "", &PathError{"readlink", name, syscall.EPLAN9} } +// Chown changes the numeric uid and gid of the named file. +// If the file is a symbolic link, it changes the uid and gid of the link's target. +// If there is an error, it will be of type *PathError. func Chown(name string, uid, gid int) error { - return ErrPlan9 + return &PathError{"chown", name, syscall.EPLAN9} } +// Lchown changes the numeric uid and gid of the named file. +// If the file is a symbolic link, it changes the uid and gid of the link itself. +// If there is an error, it will be of type *PathError. func Lchown(name string, uid, gid int) error { - return ErrPlan9 + return &PathError{"lchown", name, syscall.EPLAN9} } +// Chown changes the numeric uid and gid of the named file. +// If there is an error, it will be of type *PathError. func (f *File) Chown(uid, gid int) error { - return ErrPlan9 + return &PathError{"chown", f.name, syscall.EPLAN9} } // TempDir returns the default directory to use for temporary files. |