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os: use GetFileAttributesEx to implement Stat on windows

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Fixes #2129.

R=rsc
CC=golang-dev
https://golang.org/cl/4934049
This commit is contained in:
Alex Brainman 2011-09-06 09:59:08 +10:00
parent 919cb2ec7c
commit 37f390aa20
8 changed files with 150 additions and 114 deletions
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33
src/pkg/os/file_unix.go
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@ -94,6 +94,39 @@ func (file *File) Stat() (fi *FileInfo, err Error) {
return fileInfoFromStat(file.name, new(FileInfo), &stat, &stat), nil
}
// Stat returns a FileInfo structure describing the named file and an error, if any.
// If name names a valid symbolic link, the returned FileInfo describes
// the file pointed at by the link and has fi.FollowedSymlink set to true.
// If name names an invalid symbolic link, the returned FileInfo describes
// the link itself and has fi.FollowedSymlink set to false.
func Stat(name string) (fi *FileInfo, err Error) {
var lstat, stat syscall.Stat_t
e := syscall.Lstat(name, &lstat)
if iserror(e) {
return nil, &PathError{"stat", name, Errno(e)}
}
statp := &lstat
if lstat.Mode&syscall.S_IFMT == syscall.S_IFLNK {
e := syscall.Stat(name, &stat)
if !iserror(e) {
statp = &stat
}
}
return fileInfoFromStat(name, new(FileInfo), &lstat, statp), nil
}
// Lstat returns the FileInfo structure describing the named file and an
// error, if any. If the file is a symbolic link, the returned FileInfo
// describes the symbolic link. Lstat makes no attempt to follow the link.
func Lstat(name string) (fi *FileInfo, err Error) {
var stat syscall.Stat_t
e := syscall.Lstat(name, &stat)
if iserror(e) {
return nil, &PathError{"lstat", name, Errno(e)}
}
return fileInfoFromStat(name, new(FileInfo), &stat, &stat), nil
}
// Readdir reads the contents of the directory associated with file and
// returns an array of up to n FileInfo structures, as would be returned
// by Lstat, in directory order. Subsequent calls on the same file will yield