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// Copyright 2009 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 syscall
// File operations for Linux
import (
"syscall";
"unsafe";
)
const nameBufsize = 512
func Open(name string, mode int64, perm int64) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_OPEN, int64(uintptr(unsafe.Pointer(namebuf))), mode, perm);
return r1, err;
}
func Creat(name string, perm int64) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_OPEN, int64(uintptr(unsafe.Pointer(namebuf))), O_CREAT|O_WRONLY|O_TRUNC, perm);
return r1, err;
}
func Close(fd int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_CLOSE, fd, 0, 0);
return r1, err;
}
func Read(fd int64, buf *byte, nbytes int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_READ, fd, int64(uintptr(unsafe.Pointer(buf))), nbytes);
return r1, err;
}
func Write(fd int64, buf *byte, nbytes int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_WRITE, fd, int64(uintptr(unsafe.Pointer(buf))), nbytes);
return r1, err;
}
func Seek(fd int64, offset int64, whence int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_LSEEK, fd, offset, whence);
return r1, err;
}
func Pipe(fds *[2]int64) (ret, errno int64) {
var t [2] int32;
r1, r2, err := Syscall(SYS_PIPE, int64(uintptr(unsafe.Pointer(&t[0]))), 0, 0);
if r1 < 0 {
return r1, err;
}
fds[0] = int64(t[0]);
fds[1] = int64(t[1]);
return 0, 0;
}
func Stat(name string, buf *Stat_t) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_STAT, int64(uintptr(unsafe.Pointer(namebuf))), int64(uintptr(unsafe.Pointer(buf))), 0);
return r1, err;
}
func Lstat(name string, buf *Stat_t) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_LSTAT, int64(uintptr(unsafe.Pointer(namebuf))), int64(uintptr(unsafe.Pointer(buf))), 0);
return r1, err;
}
func Fstat(fd int64, buf *Stat_t) (ret, errno int64) {
r1, r2, err := Syscall(SYS_FSTAT, fd, int64(uintptr(unsafe.Pointer(buf))), 0);
return r1, err;
}
func Unlink(name string) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_UNLINK, int64(uintptr(unsafe.Pointer(namebuf))), 0, 0);
return r1, err;
}
func Rmdir(name string) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_RMDIR, int64(uintptr(unsafe.Pointer(namebuf))), 0, 0);
return r1, err;
}
func Fcntl(fd, cmd, arg int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_FCNTL, fd, cmd, arg);
return r1, err
}
func Mkdir(name string, perm int64) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_MKDIR, int64(uintptr(unsafe.Pointer(namebuf))), perm, 0);
return r1, err;
}
func Dup2(fd1, fd2 int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_DUP2, fd1, fd2, 0);
return r1, err;
}
func Getdents(fd int64, buf *Dirent, nbytes int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_GETDENTS64, fd, int64(uintptr(unsafe.Pointer(buf))), nbytes);
return r1, err;
}
func Chdir(dir string) (ret, errno int64) {
namebuf := StringBytePtr(dir);
r1, r2, err := Syscall(SYS_CHDIR, int64(uintptr(unsafe.Pointer(namebuf))), 0, 0);
return r1, err;
}
func Fchdir(fd int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_FCHDIR, fd, 0, 0);
return r1, err;
}
const ImplementsGetwd = true
func Getwd() (ret string, errno int64) {
var buf [PathMax]byte;
r1, r2, err := Syscall(SYS_GETCWD, int64(uintptr(unsafe.Pointer(&buf))), int64(len(buf)), 0);
if err != 0 {
return "", err;
}
// SYS_GETCWD returns the number of bytes written to buf, including the NUL.
if r1 < 1 || r1 > int64(len(buf)) || buf[r1-1] != 0 {
return "", EINVAL;
}
return string(buf[0:r1-1]), 0
}
func Link(oldpath, newpath string) (ret, errno int64) {
oldbuf := StringBytePtr(oldpath);
newbuf := StringBytePtr(newpath);
r1, r2, err := Syscall(SYS_LINK, int64(uintptr(unsafe.Pointer(oldbuf))), int64(uintptr(unsafe.Pointer(newbuf))), 0);
return r1, err;
}
func Symlink(oldpath, newpath string) (ret, errno int64) {
oldbuf := StringBytePtr(oldpath);
newbuf := StringBytePtr(newpath);
r1, r2, err := Syscall(SYS_SYMLINK, int64(uintptr(unsafe.Pointer(oldbuf))), int64(uintptr(unsafe.Pointer(newbuf))), 0);
return r1, err;
}
func Readlink(path string, buf *byte, nbytes int64) (ret, errno int64) {
pathbuf := StringBytePtr(path);
r1, r2, err := Syscall(SYS_READLINK, int64(uintptr(unsafe.Pointer(pathbuf))), int64(uintptr(unsafe.Pointer(buf))), nbytes);
return r1, err;
}
func Chmod(name string, mode int64) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_CHMOD, int64(uintptr(unsafe.Pointer(namebuf))), mode, 0);
return r1, err;
}
func Fchmod(fd, mode int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_FCHMOD, fd, mode, 0);
return r1, err;
}
func Chown(name string, uid, gid int64) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_CHOWN, int64(uintptr(unsafe.Pointer(namebuf))), uid, gid);
return r1, err;
}
func Lchown(name string, uid, gid int64) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_LCHOWN, int64(uintptr(unsafe.Pointer(namebuf))), uid, gid);
return r1, err;
}
func Fchown(fd, uid, gid int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_FCHOWN, fd, uid, gid);
return r1, err;
}
func Truncate(name string, length int64) (ret, errno int64) {
namebuf := StringBytePtr(name);
r1, r2, err := Syscall(SYS_TRUNCATE, int64(uintptr(unsafe.Pointer(namebuf))), length, 0);
return r1, err;
}
func Ftruncate(fd, length int64) (ret, errno int64) {
r1, r2, err := Syscall(SYS_FTRUNCATE, fd, length, 0);
return r1, err;
}
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