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551 lines
16 KiB
551 lines
16 KiB
// Copyright 2018 The Go Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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//go:build aix |
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// +build aix |
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// Aix system calls. |
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// This file is compiled as ordinary Go code, |
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// but it is also input to mksyscall, |
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// which parses the //sys lines and generates system call stubs. |
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// Note that sometimes we use a lowercase //sys name and |
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// wrap it in our own nicer implementation. |
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package unix |
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import "unsafe" |
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/* |
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* Wrapped |
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*/ |
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func Access(path string, mode uint32) (err error) { |
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return Faccessat(AT_FDCWD, path, mode, 0) |
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} |
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func Chmod(path string, mode uint32) (err error) { |
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return Fchmodat(AT_FDCWD, path, mode, 0) |
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} |
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func Chown(path string, uid int, gid int) (err error) { |
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return Fchownat(AT_FDCWD, path, uid, gid, 0) |
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} |
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func Creat(path string, mode uint32) (fd int, err error) { |
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return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode) |
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} |
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//sys utimes(path string, times *[2]Timeval) (err error) |
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func Utimes(path string, tv []Timeval) error { |
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if len(tv) != 2 { |
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return EINVAL |
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} |
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return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) |
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} |
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//sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error) |
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func UtimesNano(path string, ts []Timespec) error { |
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if len(ts) != 2 { |
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return EINVAL |
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} |
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return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) |
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} |
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func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error { |
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if ts == nil { |
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return utimensat(dirfd, path, nil, flags) |
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} |
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if len(ts) != 2 { |
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return EINVAL |
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} |
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return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags) |
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} |
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func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { |
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if sa.Port < 0 || sa.Port > 0xFFFF { |
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return nil, 0, EINVAL |
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} |
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sa.raw.Family = AF_INET |
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
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p[0] = byte(sa.Port >> 8) |
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p[1] = byte(sa.Port) |
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sa.raw.Addr = sa.Addr |
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil |
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} |
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func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) { |
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if sa.Port < 0 || sa.Port > 0xFFFF { |
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return nil, 0, EINVAL |
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} |
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sa.raw.Family = AF_INET6 |
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p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
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p[0] = byte(sa.Port >> 8) |
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p[1] = byte(sa.Port) |
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sa.raw.Scope_id = sa.ZoneId |
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sa.raw.Addr = sa.Addr |
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return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil |
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} |
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func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) { |
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name := sa.Name |
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n := len(name) |
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if n > len(sa.raw.Path) { |
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return nil, 0, EINVAL |
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} |
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if n == len(sa.raw.Path) && name[0] != '@' { |
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return nil, 0, EINVAL |
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} |
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sa.raw.Family = AF_UNIX |
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for i := 0; i < n; i++ { |
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sa.raw.Path[i] = uint8(name[i]) |
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} |
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// length is family (uint16), name, NUL. |
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sl := _Socklen(2) |
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if n > 0 { |
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sl += _Socklen(n) + 1 |
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} |
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if sa.raw.Path[0] == '@' { |
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sa.raw.Path[0] = 0 |
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// Don't count trailing NUL for abstract address. |
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sl-- |
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} |
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return unsafe.Pointer(&sa.raw), sl, nil |
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} |
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func Getsockname(fd int) (sa Sockaddr, err error) { |
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var rsa RawSockaddrAny |
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var len _Socklen = SizeofSockaddrAny |
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if err = getsockname(fd, &rsa, &len); err != nil { |
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return |
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} |
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return anyToSockaddr(fd, &rsa) |
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} |
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//sys getcwd(buf []byte) (err error) |
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const ImplementsGetwd = true |
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func Getwd() (ret string, err error) { |
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for len := uint64(4096); ; len *= 2 { |
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b := make([]byte, len) |
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err := getcwd(b) |
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if err == nil { |
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i := 0 |
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for b[i] != 0 { |
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i++ |
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} |
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return string(b[0:i]), nil |
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} |
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if err != ERANGE { |
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return "", err |
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} |
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} |
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} |
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func Getcwd(buf []byte) (n int, err error) { |
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err = getcwd(buf) |
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if err == nil { |
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i := 0 |
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for buf[i] != 0 { |
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i++ |
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} |
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n = i + 1 |
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} |
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return |
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} |
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func Getgroups() (gids []int, err error) { |
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n, err := getgroups(0, nil) |
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if err != nil { |
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return nil, err |
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} |
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if n == 0 { |
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return nil, nil |
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} |
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// Sanity check group count. Max is 16 on BSD. |
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if n < 0 || n > 1000 { |
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return nil, EINVAL |
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} |
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a := make([]_Gid_t, n) |
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n, err = getgroups(n, &a[0]) |
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if err != nil { |
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return nil, err |
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} |
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gids = make([]int, n) |
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for i, v := range a[0:n] { |
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gids[i] = int(v) |
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} |
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return |
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} |
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func Setgroups(gids []int) (err error) { |
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if len(gids) == 0 { |
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return setgroups(0, nil) |
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} |
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a := make([]_Gid_t, len(gids)) |
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for i, v := range gids { |
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a[i] = _Gid_t(v) |
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} |
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return setgroups(len(a), &a[0]) |
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} |
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/* |
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* Socket |
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*/ |
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//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) |
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func Accept(fd int) (nfd int, sa Sockaddr, err error) { |
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var rsa RawSockaddrAny |
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var len _Socklen = SizeofSockaddrAny |
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nfd, err = accept(fd, &rsa, &len) |
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if nfd == -1 { |
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return |
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} |
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sa, err = anyToSockaddr(fd, &rsa) |
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if err != nil { |
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Close(nfd) |
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nfd = 0 |
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} |
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return |
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} |
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func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { |
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// Recvmsg not implemented on AIX |
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sa := new(SockaddrUnix) |
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return -1, -1, -1, sa, ENOSYS |
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} |
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func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) { |
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_, err = SendmsgN(fd, p, oob, to, flags) |
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return |
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} |
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func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) { |
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// SendmsgN not implemented on AIX |
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return -1, ENOSYS |
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} |
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func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { |
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switch rsa.Addr.Family { |
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case AF_UNIX: |
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pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) |
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sa := new(SockaddrUnix) |
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// Some versions of AIX have a bug in getsockname (see IV78655). |
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// We can't rely on sa.Len being set correctly. |
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n := SizeofSockaddrUnix - 3 // subtract leading Family, Len, terminating NUL. |
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for i := 0; i < n; i++ { |
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if pp.Path[i] == 0 { |
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n = i |
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break |
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} |
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} |
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bytes := (*[len(pp.Path)]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] |
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sa.Name = string(bytes) |
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return sa, nil |
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case AF_INET: |
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pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) |
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sa := new(SockaddrInet4) |
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p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
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sa.Port = int(p[0])<<8 + int(p[1]) |
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sa.Addr = pp.Addr |
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return sa, nil |
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case AF_INET6: |
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pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) |
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sa := new(SockaddrInet6) |
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p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
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sa.Port = int(p[0])<<8 + int(p[1]) |
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sa.ZoneId = pp.Scope_id |
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sa.Addr = pp.Addr |
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return sa, nil |
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} |
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return nil, EAFNOSUPPORT |
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} |
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func Gettimeofday(tv *Timeval) (err error) { |
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err = gettimeofday(tv, nil) |
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return |
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} |
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func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { |
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if raceenabled { |
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raceReleaseMerge(unsafe.Pointer(&ioSync)) |
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} |
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return sendfile(outfd, infd, offset, count) |
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} |
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// TODO |
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func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { |
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return -1, ENOSYS |
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} |
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func direntIno(buf []byte) (uint64, bool) { |
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return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino)) |
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} |
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func direntReclen(buf []byte) (uint64, bool) { |
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return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) |
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} |
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func direntNamlen(buf []byte) (uint64, bool) { |
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reclen, ok := direntReclen(buf) |
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if !ok { |
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return 0, false |
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} |
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return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true |
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} |
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//sys getdirent(fd int, buf []byte) (n int, err error) |
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func Getdents(fd int, buf []byte) (n int, err error) { |
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return getdirent(fd, buf) |
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} |
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//sys wait4(pid Pid_t, status *_C_int, options int, rusage *Rusage) (wpid Pid_t, err error) |
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func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { |
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var status _C_int |
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var r Pid_t |
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err = ERESTART |
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// AIX wait4 may return with ERESTART errno, while the processus is still |
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// active. |
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for err == ERESTART { |
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r, err = wait4(Pid_t(pid), &status, options, rusage) |
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} |
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wpid = int(r) |
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if wstatus != nil { |
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*wstatus = WaitStatus(status) |
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} |
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return |
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} |
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/* |
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* Wait |
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*/ |
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type WaitStatus uint32 |
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func (w WaitStatus) Stopped() bool { return w&0x40 != 0 } |
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func (w WaitStatus) StopSignal() Signal { |
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if !w.Stopped() { |
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return -1 |
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} |
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return Signal(w>>8) & 0xFF |
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} |
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func (w WaitStatus) Exited() bool { return w&0xFF == 0 } |
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func (w WaitStatus) ExitStatus() int { |
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if !w.Exited() { |
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return -1 |
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} |
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return int((w >> 8) & 0xFF) |
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} |
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func (w WaitStatus) Signaled() bool { return w&0x40 == 0 && w&0xFF != 0 } |
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func (w WaitStatus) Signal() Signal { |
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if !w.Signaled() { |
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return -1 |
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} |
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return Signal(w>>16) & 0xFF |
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} |
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func (w WaitStatus) Continued() bool { return w&0x01000000 != 0 } |
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func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 } |
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func (w WaitStatus) TrapCause() int { return -1 } |
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//sys ioctl(fd int, req uint, arg uintptr) (err error) |
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// fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX |
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// There is no way to create a custom fcntl and to keep //sys fcntl easily, |
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// Therefore, the programmer must call dup2 instead of fcntl in this case. |
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// FcntlInt performs a fcntl syscall on fd with the provided command and argument. |
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//sys FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl |
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// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command. |
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//sys FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl |
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//sys fcntl(fd int, cmd int, arg int) (val int, err error) |
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//sys fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range |
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func Fsync(fd int) error { |
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return fsyncRange(fd, O_SYNC, 0, 0) |
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} |
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/* |
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* Direct access |
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*/ |
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//sys Acct(path string) (err error) |
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//sys Chdir(path string) (err error) |
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//sys Chroot(path string) (err error) |
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//sys Close(fd int) (err error) |
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//sys Dup(oldfd int) (fd int, err error) |
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//sys Exit(code int) |
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//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) |
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//sys Fchdir(fd int) (err error) |
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//sys Fchmod(fd int, mode uint32) (err error) |
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//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) |
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//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) |
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//sys Fdatasync(fd int) (err error) |
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// readdir_r |
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//sysnb Getpgid(pid int) (pgid int, err error) |
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//sys Getpgrp() (pid int) |
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//sysnb Getpid() (pid int) |
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//sysnb Getppid() (ppid int) |
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//sys Getpriority(which int, who int) (prio int, err error) |
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//sysnb Getrusage(who int, rusage *Rusage) (err error) |
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//sysnb Getsid(pid int) (sid int, err error) |
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//sysnb Kill(pid int, sig Signal) (err error) |
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//sys Klogctl(typ int, buf []byte) (n int, err error) = syslog |
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//sys Mkdir(dirfd int, path string, mode uint32) (err error) |
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//sys Mkdirat(dirfd int, path string, mode uint32) (err error) |
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//sys Mkfifo(path string, mode uint32) (err error) |
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//sys Mknod(path string, mode uint32, dev int) (err error) |
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//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) |
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//sys Nanosleep(time *Timespec, leftover *Timespec) (err error) |
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//sys Open(path string, mode int, perm uint32) (fd int, err error) = open64 |
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//sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) |
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//sys read(fd int, p []byte) (n int, err error) |
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//sys Readlink(path string, buf []byte) (n int, err error) |
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//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) |
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//sys Setdomainname(p []byte) (err error) |
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//sys Sethostname(p []byte) (err error) |
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//sysnb Setpgid(pid int, pgid int) (err error) |
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//sysnb Setsid() (pid int, err error) |
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//sysnb Settimeofday(tv *Timeval) (err error) |
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//sys Setuid(uid int) (err error) |
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//sys Setgid(uid int) (err error) |
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//sys Setpriority(which int, who int, prio int) (err error) |
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//sys Statx(dirfd int, path string, flags int, mask int, stat *Statx_t) (err error) |
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//sys Sync() |
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//sysnb Times(tms *Tms) (ticks uintptr, err error) |
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//sysnb Umask(mask int) (oldmask int) |
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//sysnb Uname(buf *Utsname) (err error) |
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//sys Unlink(path string) (err error) |
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//sys Unlinkat(dirfd int, path string, flags int) (err error) |
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//sys Ustat(dev int, ubuf *Ustat_t) (err error) |
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//sys write(fd int, p []byte) (n int, err error) |
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//sys readlen(fd int, p *byte, np int) (n int, err error) = read |
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//sys writelen(fd int, p *byte, np int) (n int, err error) = write |
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//sys Dup2(oldfd int, newfd int) (err error) |
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//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = posix_fadvise64 |
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//sys Fchown(fd int, uid int, gid int) (err error) |
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//sys fstat(fd int, stat *Stat_t) (err error) |
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//sys fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = fstatat |
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//sys Fstatfs(fd int, buf *Statfs_t) (err error) |
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//sys Ftruncate(fd int, length int64) (err error) |
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//sysnb Getegid() (egid int) |
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//sysnb Geteuid() (euid int) |
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//sysnb Getgid() (gid int) |
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//sysnb Getuid() (uid int) |
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//sys Lchown(path string, uid int, gid int) (err error) |
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//sys Listen(s int, n int) (err error) |
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//sys lstat(path string, stat *Stat_t) (err error) |
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//sys Pause() (err error) |
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//sys Pread(fd int, p []byte, offset int64) (n int, err error) = pread64 |
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//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64 |
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//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) |
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//sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) |
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//sysnb Setregid(rgid int, egid int) (err error) |
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//sysnb Setreuid(ruid int, euid int) (err error) |
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//sys Shutdown(fd int, how int) (err error) |
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//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) |
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//sys stat(path string, statptr *Stat_t) (err error) |
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//sys Statfs(path string, buf *Statfs_t) (err error) |
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//sys Truncate(path string, length int64) (err error) |
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//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
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//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) |
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//sysnb setgroups(n int, list *_Gid_t) (err error) |
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//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) |
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//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) |
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//sysnb socket(domain int, typ int, proto int) (fd int, err error) |
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//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) |
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//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
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//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) |
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//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) |
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// In order to use msghdr structure with Control, Controllen, nrecvmsg and nsendmsg must be used. |
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//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = nrecvmsg |
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//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = nsendmsg |
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//sys munmap(addr uintptr, length uintptr) (err error) |
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var mapper = &mmapper{ |
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active: make(map[*byte][]byte), |
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mmap: mmap, |
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munmap: munmap, |
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} |
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func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { |
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return mapper.Mmap(fd, offset, length, prot, flags) |
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} |
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func Munmap(b []byte) (err error) { |
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return mapper.Munmap(b) |
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} |
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//sys Madvise(b []byte, advice int) (err error) |
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//sys Mprotect(b []byte, prot int) (err error) |
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//sys Mlock(b []byte) (err error) |
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//sys Mlockall(flags int) (err error) |
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//sys Msync(b []byte, flags int) (err error) |
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//sys Munlock(b []byte) (err error) |
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//sys Munlockall() (err error) |
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|
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//sysnb pipe(p *[2]_C_int) (err error) |
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|
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func Pipe(p []int) (err error) { |
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if len(p) != 2 { |
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return EINVAL |
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} |
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var pp [2]_C_int |
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err = pipe(&pp) |
|
if err == nil { |
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p[0] = int(pp[0]) |
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p[1] = int(pp[1]) |
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} |
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return |
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} |
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|
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//sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) |
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|
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func Poll(fds []PollFd, timeout int) (n int, err error) { |
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if len(fds) == 0 { |
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return poll(nil, 0, timeout) |
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} |
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return poll(&fds[0], len(fds), timeout) |
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} |
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|
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//sys gettimeofday(tv *Timeval, tzp *Timezone) (err error) |
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//sysnb Time(t *Time_t) (tt Time_t, err error) |
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//sys Utime(path string, buf *Utimbuf) (err error) |
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|
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//sys Getsystemcfg(label int) (n uint64) |
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|
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//sys umount(target string) (err error) |
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func Unmount(target string, flags int) (err error) { |
|
if flags != 0 { |
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// AIX doesn't have any flags for umount. |
|
return ENOSYS |
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} |
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return umount(target) |
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}
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