diff options
Diffstat (limited to 'src/pkg/os/stat_plan9.go')
-rw-r--r-- | src/pkg/os/stat_plan9.go | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/pkg/os/stat_plan9.go b/src/pkg/os/stat_plan9.go new file mode 100644 index 000000000..e96749d33 --- /dev/null +++ b/src/pkg/os/stat_plan9.go @@ -0,0 +1,84 @@ +// Copyright 2011 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. + +package os + +import "syscall" + +func fileInfoFromStat(fi *FileInfo, d *Dir) *FileInfo { + fi.Dev = uint64(d.Qid.Vers) | uint64(d.Qid.Type<<32) + fi.Ino = d.Qid.Path + + fi.Mode = uint32(d.Mode) & 0777 + if (d.Mode & syscall.DMDIR) == syscall.DMDIR { + fi.Mode |= syscall.S_IFDIR + } else { + fi.Mode |= syscall.S_IFREG + } + + fi.Size = int64(d.Length) + fi.Atime_ns = 1e9 * int64(d.Atime) + fi.Mtime_ns = 1e9 * int64(d.Mtime) + fi.Name = d.Name + fi.FollowedSymlink = false + return fi +} + +// arg is an open *File or a path string. +func dirstat(arg interface{}) (fi *FileInfo, err Error) { + var name string + nd := syscall.STATFIXLEN + 16*4 + + for i := 0; i < 2; i++ { /* should work by the second try */ + buf := make([]byte, nd) + + var n int + var e syscall.Error + + switch syscallArg := arg.(type) { + case *File: + name = syscallArg.name + n, e = syscall.Fstat(syscallArg.fd, buf) + case string: + name = syscallArg + n, e = syscall.Stat(name, buf) + } + + if e != nil { + return nil, &PathError{"stat", name, e} + } + + if n < syscall.STATFIXLEN { + return nil, &PathError{"stat", name, Eshortstat} + } + + ntmp, _ := gbit16(buf) + nd = int(ntmp) + + if nd <= n { + d, e := UnmarshalDir(buf[:n]) + + if e != nil { + return nil, &PathError{"stat", name, e} + } + + return fileInfoFromStat(new(FileInfo), d), nil + } + } + + return nil, &PathError{"stat", name, Ebadstat} +} + + +// Stat returns a FileInfo structure describing the named file and an error, if any. +func Stat(name string) (fi *FileInfo, err Error) { + return dirstat(name) +} + +// Lstat returns the FileInfo structure describing the named file and an +// error, if any. If the file is a symbolic link (though Plan 9 does not have symbolic links), +// the returned FileInfo describes the symbolic link. Lstat makes no attempt to follow the link. +func Lstat(name string) (fi *FileInfo, err Error) { + return dirstat(name) +} |