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