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https://github.com/golang/go
synced 2024-11-12 02:10:21 -07:00
os: fix Plan 9 build for new FileInfo API
R=lucio.dere, rsc CC=golang-dev https://golang.org/cl/5440073
This commit is contained in:
parent
1cb254a085
commit
2c2a582ae9
@ -64,9 +64,7 @@ func (file *File) Readdir(n int) (fi []FileInfo, err error) {
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if e != nil {
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return result, &PathError{"readdir", file.name, e}
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}
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var f FileInfo
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fileInfoFromStat(&f, dir)
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result = append(result, f)
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result = append(result, fileInfoFromStat(dir))
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d.bufp += int(m)
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n--
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@ -94,7 +92,7 @@ func (file *File) Readdirnames(n int) (names []string, err error) {
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fi, err := file.Readdir(n)
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names = make([]string, len(fi))
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for i := range fi {
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names[i] = fi[i].Name
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names[i] = fi[i].Name()
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}
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return
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}
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@ -18,7 +18,7 @@ func findExecutable(file string) error {
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if err != nil {
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return err
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}
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if d.IsRegular() && d.Permission()&0111 != 0 {
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if m := d.Mode(); !m.IsDir() && m&0111 != 0 {
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return nil
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}
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return os.EPERM
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@ -140,12 +140,12 @@ func (file *file) close() error {
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// Stat returns the FileInfo structure describing file.
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// It returns the FileInfo and an error, if any.
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func (f *File) Stat() (fi *FileInfo, err error) {
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func (f *File) Stat() (FileInfo, error) {
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d, err := dirstat(f)
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if err != nil {
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return nil, err
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}
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return fileInfoFromStat(new(FileInfo), d), err
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return fileInfoFromStat(d), nil
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}
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// Truncate changes the size of the file.
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@ -4,87 +4,96 @@
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package os
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import "syscall"
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import (
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"syscall"
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"time"
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)
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func fileInfoFromStat(fi *FileInfo, d *Dir) *FileInfo {
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fi.Dev = uint64(d.Qid.Vers) | uint64(d.Qid.Type<<32)
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fi.Ino = d.Qid.Path
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func sameFile(fs1, fs2 *FileStat) bool {
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a := fs1.Sys.(*Dir)
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b := fs2.Sys.(*Dir)
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return a.Qid.Path == b.Qid.Path && a.Type == b.Type && a.Dev == b.Dev
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}
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fi.Mode = uint32(d.Mode) & 0777
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if (d.Mode & syscall.DMDIR) == syscall.DMDIR {
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fi.Mode |= syscall.S_IFDIR
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} else {
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fi.Mode |= syscall.S_IFREG
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func fileInfoFromStat(d *Dir) FileInfo {
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fs := &FileStat{
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name: d.Name,
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size: int64(d.Length),
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modTime: time.Unix(int64(d.Mtime), 0),
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Sys: d,
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}
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fi.Size = int64(d.Length)
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fi.Atime_ns = 1e9 * int64(d.Atime)
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fi.Mtime_ns = 1e9 * int64(d.Mtime)
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fi.Name = d.Name
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fi.FollowedSymlink = false
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return fi
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fs.mode = FileMode(d.Mode & 0777)
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if d.Mode&syscall.DMDIR != 0 {
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fs.mode |= ModeDir
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}
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if d.Mode&syscall.DMAPPEND != 0 {
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fs.mode |= ModeAppend
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}
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if d.Mode&syscall.DMEXCL != 0 {
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fs.mode |= ModeExclusive
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}
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if d.Mode&syscall.DMTMP != 0 {
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fs.mode |= ModeTemporary
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}
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return fs
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}
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// arg is an open *File or a path string.
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func dirstat(arg interface{}) (d *Dir, err error) {
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var name string
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nd := syscall.STATFIXLEN + 16*4
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for i := 0; i < 2; i++ { /* should work by the second try */
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buf := make([]byte, nd)
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// This is big enough for most stat messages
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// and rounded to a multiple of 128 bytes.
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size := (syscall.STATFIXLEN + 16*4 + 128) &^ 128
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for i := 0; i < 2; i++ {
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buf := make([]byte, size)
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var n int
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var e error
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switch syscallArg := arg.(type) {
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switch a := arg.(type) {
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case *File:
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name = syscallArg.name
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n, e = syscall.Fstat(syscallArg.fd, buf)
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name = a.name
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n, err = syscall.Fstat(a.fd, buf)
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case string:
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name = syscallArg
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n, e = syscall.Stat(name, buf)
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name = a
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n, err = syscall.Stat(name, buf)
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}
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if e != nil {
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return nil, &PathError{"stat", name, e}
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if err != nil {
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return nil, &PathError{"stat", name, err}
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}
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if n < syscall.STATFIXLEN {
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return nil, &PathError{"stat", name, Eshortstat}
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}
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ntmp, _ := gbit16(buf)
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nd = int(ntmp)
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// Pull the real size out of the stat message.
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s, _ := gbit16(buf)
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size = int(s)
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if nd <= n {
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d, e := UnmarshalDir(buf[:n])
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if e != nil {
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return nil, &PathError{"stat", name, e}
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// If the stat message is larger than our buffer we will
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// go around the loop and allocate one that is big enough.
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if size <= n {
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d, err = UnmarshalDir(buf[:n])
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if err != nil {
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return nil, &PathError{"stat", name, err}
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}
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return d, e
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return
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}
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}
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return nil, &PathError{"stat", name, Ebadstat}
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}
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// Stat returns a FileInfo structure describing the named file and an error, if any.
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func Stat(name string) (fi *FileInfo, err error) {
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func Stat(name string) (FileInfo, error) {
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d, err := dirstat(name)
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if err != nil {
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return nil, err
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}
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return fileInfoFromStat(new(FileInfo), d), err
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return fileInfoFromStat(d), nil
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}
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// Lstat returns the FileInfo structure describing the named file and an
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// error, if any. If the file is a symbolic link (though Plan 9 does not have symbolic links),
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// the returned FileInfo describes the symbolic link. Lstat makes no attempt to follow the link.
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func Lstat(name string) (fi *FileInfo, err error) {
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d, err := dirstat(name)
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if err != nil {
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return nil, err
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}
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return fileInfoFromStat(new(FileInfo), d), err
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func Lstat(name string) (FileInfo, error) {
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return Stat(name)
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}
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