// 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.
// Solaris 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, either here or in
// syscall_solaris.go or syscall_unix.go.
package syscall
import "unsafe"
const _F_DUP2FD_CLOEXEC = F_DUP2FD_CLOEXEC
func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
// Implemented in asm_solaris_amd64.s.
func rawSysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
type SockaddrDatalink struct {
Family uint16
Index uint16
Type uint8
Nlen uint8
Alen uint8
Slen uint8
Data [244]int8
raw RawSockaddrDatalink
}
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
}
func Pipe(p []int) (err error) {
return Pipe2(p, 0)
}
//sysnb pipe2(p *[2]_C_int, flags int) (err error)
func Pipe2(p []int, flags int) error {
if len(p) != 2 {
return EINVAL
}
var pp [2]_C_int
err := pipe2(&pp, flags)
if err == nil {
p[0] = int(pp[0])
p[1] = int(pp[1])
}
return err
}
//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = libsocket.accept4
func Accept4(fd int, flags int) (int, Sockaddr, error) {
var rsa RawSockaddrAny
var addrlen _Socklen = SizeofSockaddrAny
nfd, err := accept4(fd, &rsa, &addrlen, flags)
if err != nil {
return 0, nil, err
}
if addrlen > SizeofSockaddrAny {
panic("RawSockaddrAny too small")
}
sa, err := anyToSockaddr(&rsa)
if err != nil {
Close(nfd)
return 0, nil, err
}
return nfd, sa, nil
}
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
}
sa.raw.Family = AF_UNIX
for i := 0; i < n; i++ {
sa.raw.Path[i] = int8(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 && sl > 3) {
// Check sl > 3 so we don't change unnamed socket behavior.
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(&rsa)
}
const ImplementsGetwd = true
//sys Getcwd(buf []byte) (n int, err error)
func Getwd() (wd string, err error) {
var buf [PathMax]byte
// Getcwd will return an error if it failed for any reason.
_, err = Getcwd(buf[0:])
if err != nil {
return "", err
}
n := clen(buf[:])
if n < 1 {
return "", EINVAL
}
return string(buf[:n]), nil
}
/*
* Wrapped
*/
//sysnb getgroups(ngid int, gid *_Gid_t) (n int, err error)
//sysnb setgroups(ngid int, gid *_Gid_t) (err error)
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])
}
func ReadDirent(fd int, buf []byte) (n int, err error) {
// Final argument is (basep *uintptr) and the syscall doesn't take nil.
// TODO(rsc): Can we use a single global basep for all calls?
return Getdents(fd, buf, new(uintptr))
}
// Wait status is 7 bits at bottom, either 0 (exited),
// 0x7F (stopped), or a signal number that caused an exit.
// The 0x80 bit is whether there was a core dump.
// An extra number (exit code, signal causing a stop)
// is in the high bits.
type WaitStatus uint32
const (
mask = 0x7F
core = 0x80
shift = 8
exited = 0
stopped = 0x7F
)
func (w WaitStatus) Exited() bool { return w&mask == exited }
func (w WaitStatus) ExitStatus() int {
if w&mask != exited {
return -1
}
return int(w >> shift)
}
func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != 0 }
func (w WaitStatus) Signal() Signal {
sig := Signal(w & mask)
if sig == stopped || sig == 0 {
return -1
}
return sig
}
func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }
func (w WaitStatus) Stopped() bool { return w&mask == stopped && Signal(w>>shift) != SIGSTOP }
func (w WaitStatus) Continued() bool { return w&mask == stopped && Signal(w>>shift) == SIGSTOP }
func (w WaitStatus) StopSignal() Signal {
if !w.Stopped() {
return -1
}
return Signal(w>>shift) & 0xFF
}
func (w WaitStatus) TrapCause() int { return -1 }
func wait4(pid uintptr, wstatus *WaitStatus, options uintptr, rusage *Rusage) (wpid uintptr, err uintptr)
func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
r0, e1 := wait4(uintptr(pid), wstatus, uintptr(options), rusage)
if e1 != 0 {
err = Errno(e1)
}
return int(r0), err
}
func gethostname() (name string, err uintptr)
func Gethostname() (name string, err error) {
name, e1 := gethostname()
if e1 != 0 {
err = Errno(e1)
}
return name, err
}
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)
}
//sys fcntl(fd int, cmd int, arg int) (val int, err error)
// FcntlFlock performs a fcntl syscall for the [F_GETLK], [F_SETLK] or [F_SETLKW] command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&libc_fcntl)), 3, uintptr(fd), uintptr(cmd), uintptr(unsafe.Pointer(lk)), 0, 0, 0)
if e1 != 0 {
return e1
}
return nil
}
func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
switch rsa.Addr.Family {
case AF_UNIX:
pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa))
sa := new(SockaddrUnix)
// Assume path ends at NUL.
// This is not technically the Solaris semantics for
// abstract Unix domain sockets -- they are supposed
// to be uninterpreted fixed-size binary blobs -- but
// everyone uses this convention.
n := 0
for n < len(pp.Path) && pp.Path[n] != 0 {
n++
}
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
}
//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) = libsocket.accept
func Accept(fd int) (nfd int, sa Sockaddr, err error) {
var rsa RawSockaddrAny
var len _Socklen = SizeofSockaddrAny
nfd, err = accept(fd, &rsa, &len)
if err != nil {
return
}
sa, err = anyToSockaddr(&rsa)
if err != nil {
Close(nfd)
nfd = 0
}
return
}
func recvmsgRaw(fd int, p, 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 iov Iovec
if len(p) > 0 {
iov.Base = (*int8)(unsafe.Pointer(&p[0]))
iov.SetLen(len(p))
}
var dummy int8
if len(oob) > 0 {
// receive at least one normal byte
if len(p) == 0 {
iov.Base = &dummy
iov.SetLen(1)
}
msg.Accrights = (*int8)(unsafe.Pointer(&oob[0]))
msg.Accrightslen = int32(len(oob))
}
msg.Iov = &iov
msg.Iovlen = 1
if n, err = recvmsg(fd, &msg, flags); err != nil {
return
}
oobn = int(msg.Accrightslen)
return
}
//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = libsocket.__xnet_sendmsg
func sendmsgN(fd int, p, 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 iov Iovec
if len(p) > 0 {
iov.Base = (*int8)(unsafe.Pointer(&p[0]))
iov.SetLen(len(p))
}
var dummy int8
if len(oob) > 0 {
// send at least one normal byte
if len(p) == 0 {
iov.Base = &dummy
iov.SetLen(1)
}
msg.Accrights = (*int8)(unsafe.Pointer(&oob[0]))
msg.Accrightslen = int32(len(oob))
}
msg.Iov = &iov
msg.Iovlen = 1
if n, err = sendmsg(fd, &msg, flags); err != nil {
return 0, err
}
if len(oob) > 0 && len(p) == 0 {
n = 0
}
return n, nil
}
/*
* Exposed directly
*/
//sys Access(path string, mode uint32) (err error)
//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
//sys Chdir(path string) (err error)
//sys Chmod(path string, mode uint32) (err error)
//sys Chown(path string, uid int, gid int) (err error)
//sys Chroot(path string) (err error)
//sys Close(fd int) (err error)
//sys Dup(fd int) (nfd int, err error)
//sys Fchdir(fd int) (err error)
//sys Fchmod(fd int, mode uint32) (err error)
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fpathconf(fd int, name int) (val int, err error)
//sys Fstat(fd int, stat *Stat_t) (err error)
//sys Getdents(fd int, buf []byte, basep *uintptr) (n int, err error)
//sysnb Getgid() (gid int)
//sysnb Getpid() (pid int)
//sys Geteuid() (euid int)
//sys Getegid() (egid int)
//sys Getppid() (ppid int)
//sys Getpriority(which int, who int) (n int, err error)
//sysnb Getrlimit(which int, lim *Rlimit) (err error)
//sysnb Getrusage(who int, rusage *Rusage) (err error)
//sysnb Gettimeofday(tv *Timeval) (err error)
//sysnb Getuid() (uid int)
//sys Kill(pid int, signum Signal) (err error)
//sys Lchown(path string, uid int, gid int) (err error)
//sys Link(path string, link string) (err error)
//sys Listen(s int, backlog int) (err error) = libsocket.__xnet_listen
//sys Lstat(path string, stat *Stat_t) (err error)
//sys Mkdir(path string, mode uint32) (err error)
//sys Mknod(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)
//sys Pathconf(path string, name int) (val int, err error)
//sys pread(fd int, p []byte, offset int64) (n int, err error)
//sys pwrite(fd int, p []byte, offset int64) (n int, err error)
//sys read(fd int, p []byte) (n int, err error)
//sys Readlink(path string, buf []byte) (n int, err error)
//sys Rename(from string, to string) (err error)
//sys Rmdir(path string) (err error)
//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = lseek
//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = libsendfile.sendfile
//sysnb Setegid(egid int) (err error)
//sysnb Seteuid(euid int) (err error)
//sysnb Setgid(gid int) (err error)
//sysnb Setpgid(pid int, pgid int) (err error)
//sys Setpriority(which int, who int, prio int) (err error)
//sysnb Setregid(rgid int, egid int) (err error)
//sysnb Setreuid(ruid int, euid int) (err error)
//sysnb setrlimit(which int, lim *Rlimit) (err error)
//sysnb Setsid() (pid int, err error)
//sysnb Setuid(uid int) (err error)
//sys Shutdown(s int, how int) (err error) = libsocket.shutdown
//sys Stat(path string, stat *Stat_t) (err error)
//sys Symlink(path string, link string) (err error)
//sys Sync() (err error)
//sys Truncate(path string, length int64) (err error)
//sys Fsync(fd int) (err error)
//sys Ftruncate(fd int, length int64) (err error)
//sys Umask(newmask int) (oldmask int)
//sys Unlink(path string) (err error)
//sys utimes(path string, times *[2]Timeval) (err error)
//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.__xnet_bind
//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.__xnet_connect
//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
//sys munmap(addr uintptr, length uintptr) (err error)
//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.__xnet_sendto
//sys socket(domain int, typ int, proto int) (fd int, err error) = libsocket.__xnet_socket
//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) = libsocket.__xnet_socketpair
//sys write(fd int, p []byte) (n int, err error)
//sys writev(fd int, iovecs []Iovec) (n uintptr, err error)
//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) = libsocket.__xnet_getsockopt
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = libsocket.getpeername
//sys getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = libsocket.getsockname
//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) = libsocket.setsockopt
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) = libsocket.recvfrom
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = libsocket.__xnet_recvmsg
//sys getexecname() (path unsafe.Pointer, err error) = libc.getexecname
//sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error)
func Getexecname() (path string, err error) {
ptr, err := getexecname()
if err != nil {
return "", err
}
bytes := (*[1 << 29]byte)(ptr)[:]
for i, b := range bytes {
if b == 0 {
return string(bytes[:i]), nil
}
}
panic("unreachable")
}
func readlen(fd int, buf *byte, nbuf int) (n int, err error) {
r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&libc_read)), 3, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf), 0, 0, 0)
n = int(r0)
if e1 != 0 {
err = e1
}
return
}
var mapper = &mmapper{
active: make(map[*byte][]byte),
mmap: mmap,
munmap: munmap,
}
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
return mapper.Mmap(fd, offset, length, prot, flags)
}
func Munmap(b []byte) (err error) {
return mapper.Munmap(b)
}
func Utimes(path string, tv []Timeval) error {
if len(tv) != 2 {
return EINVAL
}
return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0])))
}
