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os, syscall: more mingw

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R=rsc, rsc1
CC=golang-dev
https://golang.org/cl/878046
This commit is contained in:
Alex Brainman 2010-04-26 23:17:14 -07:00 committed by Russ Cox
parent 461314b6e7
commit fb6b39186b
9 changed files with 353 additions and 77 deletions
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23
src/pkg/os/file.go
View File

@ -237,17 +237,6 @@ func Stat(name string) (fi *FileInfo, err Error) {
return fileInfoFromStat(name, new(FileInfo), &lstat, statp), nil
}
// Stat returns the FileInfo structure describing file.
// It returns the FileInfo and an error, if any.
func (file *File) Stat() (fi *FileInfo, err Error) {
var stat syscall.Stat_t
e := syscall.Fstat(file.fd, &stat)
if e != 0 {
return nil, &PathError{"stat", file.name, Errno(e)}
}
return fileInfoFromStat(file.name, new(FileInfo), &stat, &stat), 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.
@ -301,6 +290,9 @@ func Remove(name string) Error {
// file path, like /etc/passwd/foo, but in that case,
// both errors will be ENOTDIR, so it's okay to
// use the error from unlink.
// For windows syscall.ENOTDIR is set
// to syscall.ERROR_DIRECTORY, hopefully it should
// do the trick.
if e1 != syscall.ENOTDIR {
e = e1
}
@ -407,15 +399,6 @@ func (f *File) Chown(uid, gid int) Error {
return nil
}
// Truncate changes the size of the named file.
// If the file is a symbolic link, it changes the size of the link's target.
func Truncate(name string, size int64) Error {
if e := syscall.Truncate(name, size); e != 0 {
return &PathError{"truncate", name, Errno(e)}
}
return nil
}
// Truncate changes the size of the file.
// It does not change the I/O offset.
func (f *File) Truncate(size int64) Error {

38
src/pkg/os/file_mingw.go
View File

@ -85,6 +85,27 @@ func (file *File) Close() Error {
return err
}
func (file *File) statFile(name string) (fi *FileInfo, err Error) {
var stat syscall.ByHandleFileInformation
if ok, e := syscall.GetFileInformationByHandle(int32(file.fd), &stat); !ok {
return nil, &PathError{"stat", file.name, Errno(e)}
}
return fileInfoFromByHandleInfo(new(FileInfo), file.name, &stat), nil
}
// Stat returns the FileInfo structure describing file.
// It returns the FileInfo and an error, if any.
func (file *File) Stat() (fi *FileInfo, err Error) {
if file == nil || file.fd < 0 {
return nil, EINVAL
}
if file.isdir() {
// I don't know any better way to do that for directory
return Stat(file.name)
}
return file.statFile(file.name)
}
// Readdir reads the contents of the directory associated with file and
// returns an array of up to count FileInfo structures, as would be returned
// by Stat, in directory order. Subsequent calls on the same file will yield
@ -112,7 +133,7 @@ func (file *File) Readdir(count int) (fi []FileInfo, err Error) {
}
}
var f FileInfo
fileInfoFromStat("", &f, &di.stat, &di.stat)
fileInfoFromWin32finddata(&f, &di.stat.Windata)
if f.Name == "." || f.Name == ".." { // Useless names
continue
}
@ -129,3 +150,18 @@ func (file *File) Readdir(count int) (fi []FileInfo, err Error) {
}
return fi, nil
}
// Truncate changes the size of the named file.
// If the file is a symbolic link, it changes the size of the link's target.
func Truncate(name string, size int64) Error {
f, e := Open(name, O_WRONLY|O_CREAT, 0666)
if e != nil {
return e
}
defer f.Close()
e1 := f.Truncate(size)
if e1 != nil {
return e1
}
return nil
}

20
src/pkg/os/file_unix.go
View File

@ -53,6 +53,17 @@ func (file *File) Close() Error {
return err
}
// Stat returns the FileInfo structure describing file.
// It returns the FileInfo and an error, if any.
func (file *File) Stat() (fi *FileInfo, err Error) {
var stat syscall.Stat_t
e := syscall.Fstat(file.fd, &stat)
if e != 0 {
return nil, &PathError{"stat", file.name, Errno(e)}
}
return fileInfoFromStat(file.name, new(FileInfo), &stat, &stat), nil
}
// Readdir reads the contents of the directory associated with file and
// returns an array of up to count FileInfo structures, as would be returned
// by Stat, in directory order. Subsequent calls on the same file will yield
@ -80,3 +91,12 @@ func (file *File) Readdir(count int) (fi []FileInfo, err Error) {
}
return
}
// Truncate changes the size of the named file.
// If the file is a symbolic link, it changes the size of the link's target.
func Truncate(name string, size int64) Error {
if e := syscall.Truncate(name, size); e != 0 {
return &PathError{"truncate", name, Errno(e)}
}
return nil
}

28
src/pkg/os/stat_mingw.go
View File

@ -7,21 +7,39 @@ package os
import "syscall"
func fileInfoFromStat(name string, fi *FileInfo, lstat, stat *syscall.Stat_t) *FileInfo {
return fileInfoFromWin32finddata(fi, &stat.Windata)
}
func fileInfoFromWin32finddata(fi *FileInfo, d *syscall.Win32finddata) *FileInfo {
return setFileInfo(fi, string(syscall.UTF16ToString(d.FileName[0:])), d.FileAttributes, d.FileSizeHigh, d.FileSizeLow, d.CreationTime, d.LastAccessTime, d.LastWriteTime)
}
func fileInfoFromByHandleInfo(fi *FileInfo, name string, d *syscall.ByHandleFileInformation) *FileInfo {
for i := len(name) - 1; i >= 0; i-- {
if name[i] == '/' || name[i] == '\\' {
name = name[i+1:]
break
}
}
return setFileInfo(fi, name, d.FileAttributes, d.FileSizeHigh, d.FileSizeLow, d.CreationTime, d.LastAccessTime, d.LastWriteTime)
}
func setFileInfo(fi *FileInfo, name string, fa, sizehi, sizelo uint32, ctime, atime, wtime syscall.Filetime) *FileInfo {
fi.Mode = 0
if stat.Windata.FileAttributes == syscall.FILE_ATTRIBUTE_DIRECTORY {
if fa == syscall.FILE_ATTRIBUTE_DIRECTORY {
fi.Mode = fi.Mode | syscall.S_IFDIR
} else {
fi.Mode = fi.Mode | syscall.S_IFREG
}
if stat.Windata.FileAttributes == syscall.FILE_ATTRIBUTE_READONLY {
if fa == syscall.FILE_ATTRIBUTE_READONLY {
fi.Mode = fi.Mode | 0444
} else {
fi.Mode = fi.Mode | 0666
}
fi.Size = int64(stat.Windata.FileSizeHigh)<<32 + int64(stat.Windata.FileSizeLow)
fi.Name = string(syscall.UTF16ToString(stat.Windata.FileName[0:]))
fi.Size = int64(sizehi)<<32 + int64(sizelo)
fi.Name = name
fi.FollowedSymlink = false
// TODO(brainman): use CreationTime LastAccessTime LastWriteTime to prime following Dir fields
// TODO(brainman): use ctime atime wtime to prime following FileInfo fields
fi.Atime_ns = 0
fi.Mtime_ns = 0
fi.Ctime_ns = 0

10
src/pkg/os/sys_mingw.go
View File

@ -4,4 +4,12 @@
package os
func Hostname() (name string, err Error) { return "windows", nil }
import "syscall"
func Hostname() (name string, err Error) {
s, e := syscall.ComputerName()
if e != 0 {
return "", NewSyscallError("ComputerName", e)
}
return s, nil
}

143
src/pkg/syscall/syscall_mingw.go
View File

@ -111,6 +111,16 @@ func getSysProcAddr(m uint32, pname string) uintptr {
//sys FindFirstFile(name *uint16, data *Win32finddata) (handle int32, errno int) [failretval=-1] = FindFirstFileW
//sys FindNextFile(handle int32, data *Win32finddata) (ok bool, errno int) = FindNextFileW
//sys FindClose(handle int32) (ok bool, errno int)
//sys GetFileInformationByHandle(handle int32, data *ByHandleFileInformation) (ok bool, errno int)
//sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, errno int) = GetCurrentDirectoryW
//sys SetCurrentDirectory(path *uint16) (ok bool, errno int) = SetCurrentDirectoryW
//sys CreateDirectory(path *uint16, sa *byte) (ok bool, errno int) = CreateDirectoryW
//sys RemoveDirectory(path *uint16) (ok bool, errno int) = RemoveDirectoryW
//sys DeleteFile(path *uint16) (ok bool, errno int) = DeleteFileW
//sys MoveFile(from *uint16, to *uint16) (ok bool, errno int) = MoveFileW
//sys GetComputerName(buf *uint16, n *uint32) (ok bool, errno int) = GetComputerNameW
//sys SetEndOfFile(handle int32) (ok bool, errno int)
//sys GetSystemTimeAsFileTime(time *Filetime)
// syscall interface implementation for other packages
@ -118,7 +128,7 @@ func Errstr(errno int) string {
if errno == EMINGW {
return "not supported by windows"
}
var b = make([]uint16, 300)
b := make([]uint16, 300)
n, err := FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_ARGUMENT_ARRAY, 0, uint32(errno), 0, b, nil)
if err != 0 {
return "error " + str(errno) + " (FormatMessage failed with err=" + str(err) + ")"
@ -175,21 +185,18 @@ func Read(fd int, p []byte) (n int, errno int) {
// not sure if I should do that
func Pread(fd int, p []byte, offset int64) (n int, errno int) {
var o Overlapped
o.OffsetHigh = uint32(offset >> 32)
o.Offset = uint32(offset)
curoffset, e := Seek(fd, 0, 1)
if e != 0 {
return 0, e
}
defer Seek(fd, curoffset, 0)
var o Overlapped
o.OffsetHigh = uint32(offset >> 32)
o.Offset = uint32(offset)
var done uint32
if ok, e := ReadFile(int32(fd), p, &done, &o); !ok {
return 0, e
}
_, e = Seek(fd, curoffset, 0)
if e != 0 {
return 0, e
}
return int(done), 0
}
@ -202,21 +209,18 @@ func Write(fd int, p []byte) (n int, errno int) {
}
func Pwrite(fd int, p []byte, offset int64) (n int, errno int) {
var o Overlapped
o.OffsetHigh = uint32(offset >> 32)
o.Offset = uint32(offset)
curoffset, e := Seek(fd, 0, 1)
if e != 0 {
return 0, e
}
defer Seek(fd, curoffset, 0)
var o Overlapped
o.OffsetHigh = uint32(offset >> 32)
o.Offset = uint32(offset)
var done uint32
if ok, e := WriteFile(int32(fd), p, &done, &o); !ok {
return 0, e
}
_, e = Seek(fd, curoffset, 0)
if e != 0 {
return 0, e
}
return int(done), 0
}
@ -272,6 +276,93 @@ func Lstat(path string, stat *Stat_t) (errno int) {
return Stat(path, stat)
}
const ImplementsGetwd = true
func Getwd() (wd string, errno int) {
b := make([]uint16, 300)
n, e := GetCurrentDirectory(uint32(len(b)), &b[0])
if e != 0 {
return "", e
}
return string(utf16.Decode(b[0:n])), 0
}
func Chdir(path string) (errno int) {
if ok, e := SetCurrentDirectory(&StringToUTF16(path)[0]); !ok {
return e
}
return 0
}
func Mkdir(path string, mode int) (errno int) {
if ok, e := CreateDirectory(&StringToUTF16(path)[0], nil); !ok {
return e
}
return 0
}
func Rmdir(path string) (errno int) {
if ok, e := RemoveDirectory(&StringToUTF16(path)[0]); !ok {
return e
}
return 0
}
func Unlink(path string) (errno int) {
if ok, e := DeleteFile(&StringToUTF16(path)[0]); !ok {
return e
}
return 0
}
func Rename(oldpath, newpath string) (errno int) {
from := &StringToUTF16(oldpath)[0]
to := &StringToUTF16(newpath)[0]
if ok, e := MoveFile(from, to); !ok {
return e
}
return 0
}
func ComputerName() (name string, errno int) {
var n uint32 = MAX_COMPUTERNAME_LENGTH + 1
b := make([]uint16, n)
if ok, e := GetComputerName(&b[0], &n); !ok {
return "", e
}
return string(utf16.Decode(b[0:n])), 0
}
func Ftruncate(fd int, length int64) (errno int) {
curoffset, e := Seek(fd, 0, 1)
if e != 0 {
return e
}
defer Seek(fd, curoffset, 0)
if _, e := Seek(fd, length, 0); e != 0 {
return e
}
if _, e := SetEndOfFile(int32(fd)); e != 0 {
return e
}
return 0
}
func Gettimeofday(tv *Timeval) (errno int) {
var ft Filetime
// 100-nanosecond intervals since January 1, 1601
GetSystemTimeAsFileTime(&ft)
t := uint64(ft.HighDateTime)<<32 + uint64(ft.LowDateTime)
// convert into microseconds
t /= 10
// change starting time to the Epoch (00:00:00 UTC, January 1, 1970)
t -= 11644473600000000
// split into sec / usec
tv.Sec = int32(t / 1e6)
tv.Usec = int32(t) - tv.Sec
return 0
}
// TODO(brainman): fix all needed for os
const (
@ -281,33 +372,21 @@ const (
func Getpid() (pid int) { return -1 }
func Getppid() (ppid int) { return -1 }
func Mkdir(path string, mode int) (errno int) { return EMINGW }
func Fstat(fd int, stat *Stat_t) (errno int) { return EMINGW }
func Chdir(path string) (errno int) { return EMINGW }
func Fchdir(fd int) (errno int) { return EMINGW }
func Unlink(path string) (errno int) { return EMINGW }
func Rmdir(path string) (errno int) { return EMINGW }
func Link(oldpath, newpath string) (errno int) { return EMINGW }
func Symlink(path, link string) (errno int) { return EMINGW }
func Readlink(path string, buf []byte) (n int, errno int) { return 0, EMINGW }
func Rename(oldpath, newpath string) (errno int) { return EMINGW }
func Chmod(path string, mode int) (errno int) { return EMINGW }
func Fchmod(fd int, mode int) (errno int) { return EMINGW }
func Chown(path string, uid int, gid int) (errno int) { return EMINGW }
func Lchown(path string, uid int, gid int) (errno int) { return EMINGW }
func Fchown(fd int, uid int, gid int) (errno int) { return EMINGW }
func Truncate(name string, size int64) (errno int) { return EMINGW }
func Ftruncate(fd int, length int64) (errno int) { return EMINGW }
const ImplementsGetwd = true
func Getwd() (wd string, errno int) { return "", EMINGW }
func Getuid() (uid int) { return -1 }
func Geteuid() (euid int) { return -1 }
func Getgid() (gid int) { return -1 }
func Getegid() (egid int) { return -1 }
func Getgroups() (gids []int, errno int) { return nil, EMINGW }
func Gettimeofday(tv *Timeval) (errno int) { return EMINGW }
func Getuid() (uid int) { return -1 }
func Geteuid() (euid int) { return -1 }
func Getgid() (gid int) { return -1 }
func Getegid() (egid int) { return -1 }
func Getgroups() (gids []int, errno int) { return nil, EMINGW }
// TODO(brainman): fix all this meaningless code, it is here to compile exec.go

3
src/pkg/syscall/zerrors_mingw_386.go
View File

@ -11,6 +11,7 @@ const (
ERROR_INSUFFICIENT_BUFFER = 122
ERROR_MOD_NOT_FOUND = 126
ERROR_PROC_NOT_FOUND = 127
ERROR_DIRECTORY = 267
// TODO(brainman): should use value for EMINGW that does not clashes with anything else
EMINGW = 99999 /* otherwise unused */
)
@ -36,7 +37,7 @@ const (
EEXIST = 17
EXDEV = 18
ENODEV = 19
ENOTDIR = 20
ENOTDIR = ERROR_DIRECTORY
EISDIR = 21
EINVAL = 22
ENFILE = 23

148
src/pkg/syscall/zsyscall_mingw_386.go
View File

@ -6,23 +6,33 @@ package syscall
import "unsafe"
var (
modKERNEL32 = loadDll("kernel32.dll")
procGetLastError = getSysProcAddr(modKERNEL32, "GetLastError")
procLoadLibraryW = getSysProcAddr(modKERNEL32, "LoadLibraryW")
procFreeLibrary = getSysProcAddr(modKERNEL32, "FreeLibrary")
procGetProcAddress = getSysProcAddr(modKERNEL32, "GetProcAddress")
procGetVersion = getSysProcAddr(modKERNEL32, "GetVersion")
procFormatMessageW = getSysProcAddr(modKERNEL32, "FormatMessageW")
procExitProcess = getSysProcAddr(modKERNEL32, "ExitProcess")
procCreateFileW = getSysProcAddr(modKERNEL32, "CreateFileW")
procReadFile = getSysProcAddr(modKERNEL32, "ReadFile")
procWriteFile = getSysProcAddr(modKERNEL32, "WriteFile")
procSetFilePointer = getSysProcAddr(modKERNEL32, "SetFilePointer")
procCloseHandle = getSysProcAddr(modKERNEL32, "CloseHandle")
procGetStdHandle = getSysProcAddr(modKERNEL32, "GetStdHandle")
procFindFirstFileW = getSysProcAddr(modKERNEL32, "FindFirstFileW")
procFindNextFileW = getSysProcAddr(modKERNEL32, "FindNextFileW")
procFindClose = getSysProcAddr(modKERNEL32, "FindClose")
modKERNEL32 = loadDll("kernel32.dll")
procGetLastError = getSysProcAddr(modKERNEL32, "GetLastError")
procLoadLibraryW = getSysProcAddr(modKERNEL32, "LoadLibraryW")
procFreeLibrary = getSysProcAddr(modKERNEL32, "FreeLibrary")
procGetProcAddress = getSysProcAddr(modKERNEL32, "GetProcAddress")
procGetVersion = getSysProcAddr(modKERNEL32, "GetVersion")
procFormatMessageW = getSysProcAddr(modKERNEL32, "FormatMessageW")
procExitProcess = getSysProcAddr(modKERNEL32, "ExitProcess")
procCreateFileW = getSysProcAddr(modKERNEL32, "CreateFileW")
procReadFile = getSysProcAddr(modKERNEL32, "ReadFile")
procWriteFile = getSysProcAddr(modKERNEL32, "WriteFile")
procSetFilePointer = getSysProcAddr(modKERNEL32, "SetFilePointer")
procCloseHandle = getSysProcAddr(modKERNEL32, "CloseHandle")
procGetStdHandle = getSysProcAddr(modKERNEL32, "GetStdHandle")
procFindFirstFileW = getSysProcAddr(modKERNEL32, "FindFirstFileW")
procFindNextFileW = getSysProcAddr(modKERNEL32, "FindNextFileW")
procFindClose = getSysProcAddr(modKERNEL32, "FindClose")
procGetFileInformationByHandle = getSysProcAddr(modKERNEL32, "GetFileInformationByHandle")
procGetCurrentDirectoryW = getSysProcAddr(modKERNEL32, "GetCurrentDirectoryW")
procSetCurrentDirectoryW = getSysProcAddr(modKERNEL32, "SetCurrentDirectoryW")
procCreateDirectoryW = getSysProcAddr(modKERNEL32, "CreateDirectoryW")
procRemoveDirectoryW = getSysProcAddr(modKERNEL32, "RemoveDirectoryW")
procDeleteFileW = getSysProcAddr(modKERNEL32, "DeleteFileW")
procMoveFileW = getSysProcAddr(modKERNEL32, "MoveFileW")
procGetComputerNameW = getSysProcAddr(modKERNEL32, "GetComputerNameW")
procSetEndOfFile = getSysProcAddr(modKERNEL32, "SetEndOfFile")
procGetSystemTimeAsFileTime = getSysProcAddr(modKERNEL32, "GetSystemTimeAsFileTime")
)
func GetLastError() (lasterrno int) {
@ -201,3 +211,107 @@ func FindClose(handle int32) (ok bool, errno int) {
}
return
}
func GetFileInformationByHandle(handle int32, data *ByHandleFileInformation) (ok bool, errno int) {
r0, _, e1 := Syscall(procGetFileInformationByHandle, uintptr(handle), uintptr(unsafe.Pointer(data)), 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, errno int) {
r0, _, e1 := Syscall(procGetCurrentDirectoryW, uintptr(buflen), uintptr(unsafe.Pointer(buf)), 0)
n = uint32(r0)
if n == 0 {
errno = int(e1)
} else {
errno = 0
}
return
}
func SetCurrentDirectory(path *uint16) (ok bool, errno int) {
r0, _, e1 := Syscall(procSetCurrentDirectoryW, uintptr(unsafe.Pointer(path)), 0, 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func CreateDirectory(path *uint16, sa *byte) (ok bool, errno int) {
r0, _, e1 := Syscall(procCreateDirectoryW, uintptr(unsafe.Pointer(path)), uintptr(unsafe.Pointer(sa)), 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func RemoveDirectory(path *uint16) (ok bool, errno int) {
r0, _, e1 := Syscall(procRemoveDirectoryW, uintptr(unsafe.Pointer(path)), 0, 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func DeleteFile(path *uint16) (ok bool, errno int) {
r0, _, e1 := Syscall(procDeleteFileW, uintptr(unsafe.Pointer(path)), 0, 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func MoveFile(from *uint16, to *uint16) (ok bool, errno int) {
r0, _, e1 := Syscall(procMoveFileW, uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(to)), 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func GetComputerName(buf *uint16, n *uint32) (ok bool, errno int) {
r0, _, e1 := Syscall(procGetComputerNameW, uintptr(unsafe.Pointer(buf)), uintptr(unsafe.Pointer(n)), 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func SetEndOfFile(handle int32) (ok bool, errno int) {
r0, _, e1 := Syscall(procSetEndOfFile, uintptr(handle), 0, 0)
ok = bool(r0 != 0)
if !ok {
errno = int(e1)
} else {
errno = 0
}
return
}
func GetSystemTimeAsFileTime(time *Filetime) {
Syscall(procGetSystemTimeAsFileTime, uintptr(unsafe.Pointer(time)), 0, 0)
return
}

17
src/pkg/syscall/ztypes_mingw_386.go
View File

@ -80,6 +80,8 @@ const (
FORMAT_MESSAGE_MAX_WIDTH_MASK = 255
MAX_PATH = 260
MAX_COMPUTERNAME_LENGTH = 15
)
// Types
@ -92,6 +94,7 @@ type _C_long int32
type _C_long_long int64
// Invented values to support what package os expects.
type Timeval struct {
Sec int32
Usec int32
@ -123,6 +126,20 @@ type Win32finddata struct {
AlternateFileName [13]uint16
}
type ByHandleFileInformation struct {
FileAttributes uint32
CreationTime Filetime
LastAccessTime Filetime
LastWriteTime Filetime
VolumeSerialNumber uint32
FileSizeHigh uint32
FileSizeLow uint32
NumberOfLinks uint32
FileIndexHigh uint32
FileIndexLow uint32
}
// Invented values to support what package os expects.
type Stat_t struct {
Windata Win32finddata
Mode uint32