diff options
Diffstat (limited to 'src/pkg/syscall/syscall_freebsd.go')
| -rw-r--r-- | src/pkg/syscall/syscall_freebsd.go | 762 |
1 files changed, 762 insertions, 0 deletions
diff --git a/src/pkg/syscall/syscall_freebsd.go b/src/pkg/syscall/syscall_freebsd.go new file mode 100644 index 000000000..511eda5ad --- /dev/null +++ b/src/pkg/syscall/syscall_freebsd.go @@ -0,0 +1,762 @@ +// 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. + +// FreeBSD 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 syscall + +import "unsafe" + +const OS = "freebsd" + +/* + * Pseudo-system calls + */ +// The const provides a compile-time constant so clients +// can adjust to whether there is a working Getwd and avoid +// even linking this function into the binary. See ../os/getwd.go. +const ImplementsGetwd = false + +func Getwd() (string, int) { return "", ENOTSUP } + + +/* + * Wrapped + */ + +//sys getgroups(ngid int, gid *_Gid_t) (n int, errno int) +//sys setgroups(ngid int, gid *_Gid_t) (errno int) + +func Getgroups() (gids []int, errno int) { + n, err := getgroups(0, nil); + if err != 0 { + return nil, errno + } + if n == 0 { + return nil, 0 + } + + // 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 != 0 { + return nil, errno + } + gids = make([]int, n); + for i, v := range a[0:n] { + gids[i] = int(v) + } + return; +} + +func Setgroups(gids []int) (errno int) { + 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]); +} + +// 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() int { + sig := int(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 && w>>shift != SIGSTOP } + +func (w WaitStatus) Continued() bool { return w&mask == stopped && w>>shift == SIGSTOP } + +func (w WaitStatus) StopSignal() int { + if !w.Stopped() { + return -1 + } + return int(w>>shift) & 0xFF; +} + +func (w WaitStatus) TrapCause() int { + // Darwin doesn't have trap causes + return -1 +} + +//sys wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, errno int) + +func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, errno int) { + var status _C_int; + wpid, errno = wait4(pid, &status, options, rusage); + if wstatus != nil { + *wstatus = WaitStatus(status) + } + return; +} + +//sys pipe() (r int, w int, errno int) + +func Pipe(p []int) (errno int) { + if len(p) != 2 { + return EINVAL + } + p[0], p[1], errno = pipe(); + return; +} + +func Sleep(ns int64) (errno int) { + tv := NsecToTimeval(ns); + return Select(0, nil, nil, nil, &tv); +} + +//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int) +//sys bind(s int, addr uintptr, addrlen _Socklen) (errno int) +//sys connect(s int, addr uintptr, addrlen _Socklen) (errno int) +//sys socket(domain int, typ int, proto int) (fd int, errno int) +//sys setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) +//sys getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) +//sys getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) + +// For testing: clients can set this flag to force +// creation of IPv6 sockets to return EAFNOSUPPORT. +var SocketDisableIPv6 bool + +type Sockaddr interface { + sockaddr() (ptr uintptr, len _Socklen, errno int); // lowercase; only we can define Sockaddrs +} + +type SockaddrInet4 struct { + Port int; + Addr [4]byte; + raw RawSockaddrInet4; +} + +func (sa *SockaddrInet4) sockaddr() (uintptr, _Socklen, int) { + if sa.Port < 0 || sa.Port > 0xFFFF { + return 0, 0, EINVAL + } + sa.raw.Len = SizeofSockaddrInet4; + sa.raw.Family = AF_INET; + p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)); + p[0] = byte(sa.Port >> 8); + p[1] = byte(sa.Port); + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return uintptr(unsafe.Pointer(&sa.raw)), _Socklen(sa.raw.Len), 0; +} + +type SockaddrInet6 struct { + Port int; + Addr [16]byte; + raw RawSockaddrInet6; +} + +func (sa *SockaddrInet6) sockaddr() (uintptr, _Socklen, int) { + if sa.Port < 0 || sa.Port > 0xFFFF { + return 0, 0, EINVAL + } + sa.raw.Len = SizeofSockaddrInet6; + sa.raw.Family = AF_INET6; + p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)); + p[0] = byte(sa.Port >> 8); + p[1] = byte(sa.Port); + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return uintptr(unsafe.Pointer(&sa.raw)), _Socklen(sa.raw.Len), 0; +} + +type SockaddrUnix struct { + Name string; + raw RawSockaddrUnix; +} + +func (sa *SockaddrUnix) sockaddr() (uintptr, _Socklen, int) { + name := sa.Name; + n := len(name); + if n >= len(sa.raw.Path) || n == 0 { + return 0, 0, EINVAL + } + sa.raw.Len = byte(3 + n); // 2 for Family, Len; 1 for NUL + sa.raw.Family = AF_UNIX; + for i := 0; i < n; i++ { + sa.raw.Path[i] = int8(name[i]) + } + return uintptr(unsafe.Pointer(&sa.raw)), _Socklen(sa.raw.Len), 0; +} + +func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, int) { + switch rsa.Addr.Family { + case AF_UNIX: + pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)); + if pp.Len < 3 || pp.Len > SizeofSockaddrUnix { + return nil, EINVAL + } + sa := new(SockaddrUnix); + n := int(pp.Len) - 3; // subtract leading Family, Len, terminating NUL + for i := 0; i < n; i++ { + if pp.Path[i] == 0 { + // found early NUL; assume Len is overestimating + n = i; + break; + } + } + bytes := (*[len(pp.Path)]byte)(unsafe.Pointer(&pp.Path[0])); + sa.Name = string(bytes[0:n]); + return sa, 0; + + 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]); + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, 0; + + 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]); + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, 0; + } + return nil, EAFNOSUPPORT; +} + +func Accept(fd int) (nfd int, sa Sockaddr, errno int) { + var rsa RawSockaddrAny; + var len _Socklen = SizeofSockaddrAny; + nfd, errno = accept(fd, &rsa, &len); + if errno != 0 { + return + } + sa, errno = anyToSockaddr(&rsa); + if errno != 0 { + Close(nfd); + nfd = 0; + } + return; +} + +func Getsockname(fd int) (sa Sockaddr, errno int) { + var rsa RawSockaddrAny; + var len _Socklen = SizeofSockaddrAny; + if errno = getsockname(fd, &rsa, &len); errno != 0 { + return + } + return anyToSockaddr(&rsa); +} + +func Getpeername(fd int) (sa Sockaddr, errno int) { + var rsa RawSockaddrAny; + var len _Socklen = SizeofSockaddrAny; + if errno = getpeername(fd, &rsa, &len); errno != 0 { + return + } + return anyToSockaddr(&rsa); +} + +func Bind(fd int, sa Sockaddr) (errno int) { + ptr, n, err := sa.sockaddr(); + if err != 0 { + return err + } + return bind(fd, ptr, n); +} + +func Connect(fd int, sa Sockaddr) (errno int) { + ptr, n, err := sa.sockaddr(); + if err != 0 { + return err + } + return connect(fd, ptr, n); +} + +func Socket(domain, typ, proto int) (fd, errno int) { + if domain == AF_INET6 && SocketDisableIPv6 { + return -1, EAFNOSUPPORT + } + fd, errno = socket(domain, typ, proto); + return; +} + +func SetsockoptInt(fd, level, opt int, value int) (errno int) { + var n = int32(value); + return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&n)), 4); +} + +func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (errno int) { + return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(tv)), unsafe.Sizeof(*tv)) +} + +func SetsockoptLinger(fd, level, opt int, l *Linger) (errno int) { + return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(l)), unsafe.Sizeof(*l)) +} + + +//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, errno int) + +func Recvfrom(fd int, p []byte, flags int) (n int, from Sockaddr, errno int) { + var rsa RawSockaddrAny; + var len _Socklen = SizeofSockaddrAny; + if n, errno = recvfrom(fd, p, flags, &rsa, &len); errno != 0 { + return + } + from, errno = anyToSockaddr(&rsa); + return; +} + +//sys sendto(s int, buf []byte, flags int, to uintptr, addrlen _Socklen) (errno int) + +func Sendto(fd int, p []byte, flags int, to Sockaddr) (errno int) { + ptr, n, err := to.sockaddr(); + if err != 0 { + return err + } + return sendto(fd, p, flags, ptr, n); +} + +//sys kevent(kq int, change uintptr, nchange int, event uintptr, nevent int, timeout *Timespec) (n int, errno int) + +func Kevent(kq int, changes, events []Kevent_t, timeout *Timespec) (n int, errno int) { + var change, event uintptr; + if len(changes) > 0 { + change = uintptr(unsafe.Pointer(&changes[0])) + } + if len(events) > 0 { + event = uintptr(unsafe.Pointer(&events[0])) + } + return kevent(kq, change, len(changes), event, len(events), timeout); +} + +//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (errno int) = SYS___SYSCTL + +// Translate "kern.hostname" to []_C_int{0,1,2,3}. +func nametomib(name string) (mib []_C_int, errno int) { + const CTL_MAXNAME = 12; + const siz = uintptr(unsafe.Sizeof(mib[0])); + + // NOTE(rsc): It seems strange to set the buffer to have + // size CTL_MAXNAME+2 but use only CTL_MAXNAME + // as the size. I don't know why the +2 is here, but the + // kernel uses +2 for its own implementation of this function. + // I am scared that if we don't include the +2 here, the kernel + // will silently write 2 words farther than we specify + // and we'll get memory corruption. + var buf [CTL_MAXNAME + 2]_C_int; + n := uintptr(CTL_MAXNAME) * siz; + + p := (*byte)(unsafe.Pointer(&buf[0])); + bytes := StringByteSlice(name); + + // Magic sysctl: "setting" 0.3 to a string name + // lets you read back the array of integers form. + if errno = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); errno != 0 { + return nil, errno + } + return buf[0 : n/siz], 0; +} + +func Sysctl(name string) (value string, errno int) { + // Translate name to mib number. + mib, errno := nametomib(name); + if errno != 0 { + return "", errno + } + + // Find size. + n := uintptr(0); + if errno = sysctl(mib, nil, &n, nil, 0); errno != 0 { + return "", errno + } + if n == 0 { + return "", 0 + } + + // Read into buffer of that size. + buf := make([]byte, n); + if errno = sysctl(mib, &buf[0], &n, nil, 0); errno != 0 { + return "", errno + } + + // Throw away terminating NUL. + if n > 0 && buf[n-1] == '\x00' { + n-- + } + return string(buf[0:n]), 0; +} + +func SysctlUint32(name string) (value uint32, errno int) { + // Translate name to mib number. + mib, errno := nametomib(name); + if errno != 0 { + return 0, errno + } + + // Read into buffer of that size. + n := uintptr(4); + buf := make([]byte, 4); + if errno = sysctl(mib, &buf[0], &n, nil, 0); errno != 0 { + return 0, errno + } + if n != 4 { + return 0, EIO + } + return *(*uint32)(unsafe.Pointer(&buf[0])), 0; +} + +// TODO: wrap +// Acct(name nil-string) (errno int) +// Futimes(fd int, timeval *Timeval) (errno int) // Pointer to 2 timevals! +// Gethostuuid(uuid *byte, timeout *Timespec) (errno int) +// Getsockopt(s int, level int, name int, val *byte, vallen *int) (errno int) +// Madvise(addr *byte, len int, behav int) (errno int) +// Mprotect(addr *byte, len int, prot int) (errno int) +// Msync(addr *byte, len int, flags int) (errno int) +// Munmap(addr *byte, len int) (errno int) +// Ptrace(req int, pid int, addr uintptr, data int) (ret uintptr, errno int) +// Recvmsg(s int, msg *Msghdr, flags int) (n int, errno int) +// Sendmsg(s int, msg *Msghdr, flags int) (n int, errno int) +// Utimes(path string, timeval *Timeval) (errno int) // Pointer to 2 timevals! +//sys fcntl(fd int, cmd int, arg int) (val int, errno int) + + +/* + * Exposed directly + */ +//sys Access(path string, flags int) (errno int) +//sys Adjtime(delta *Timeval, olddelta *Timeval) (errno int) +//sys Chdir(path string) (errno int) +//sys Chflags(path string, flags int) (errno int) +//sys Chmod(path string, mode int) (errno int) +//sys Chown(path string, uid int, gid int) (errno int) +//sys Chroot(path string) (errno int) +//sys Close(fd int) (errno int) +//sys Dup(fd int) (nfd int, errno int) +//sys Dup2(from int, to int) (errno int) +//sys Exit(code int) +//sys Fchdir(fd int) (errno int) +//sys Fchflags(path string, flags int) (errno int) +//sys Fchmod(fd int, mode int) (errno int) +//sys Fchown(fd int, uid int, gid int) (errno int) +//sys Flock(fd int, how int) (errno int) +//sys Fpathconf(fd int, name int) (val int, errno int) +//sys Fstat(fd int, stat *Stat_t) (errno int) +//sys Fstatfs(fd int, stat *Statfs_t) (errno int) +//sys Fsync(fd int) (errno int) +//sys Ftruncate(fd int, length int64) (errno int) +//sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, errno int) +//sys Getdtablesize() (size int) +//sys Getegid() (egid int) +//sys Geteuid() (uid int) +//sys Getfsstat(buf []Statfs_t, flags int) (n int, errno int) +//sys Getgid() (gid int) +//sys Getpgid(pid int) (pgid int, errno int) +//sys Getpgrp() (pgrp int) +//sys Getpid() (pid int) +//sys Getppid() (ppid int) +//sys Getpriority(which int, who int) (prio int, errno int) +//sys Getrlimit(which int, lim *Rlimit) (errno int) +//sys Getrusage(who int, rusage *Rusage) (errno int) +//sys Getsid(pid int) (sid int, errno int) +//sys Gettimeofday(tv *Timeval) (errno int) +//sys Getuid() (uid int) +//sys Issetugid() (tainted bool) +//sys Kill(pid int, signum int, posix int) (errno int) +//sys Kqueue() (fd int, errno int) +//sys Lchown(path string, uid int, gid int) (errno int) +//sys Link(path string, link string) (errno int) +//sys Listen(s int, backlog int) (errno int) +//sys Lstat(path string, stat *Stat_t) (errno int) +//sys Mkdir(path string, mode int) (errno int) +//sys Mkfifo(path string, mode int) (errno int) +//sys Mknod(path string, mode int, dev int) (errno int) +//sys Open(path string, mode int, perm int) (fd int, errno int) +//sys Pathconf(path string, name int) (val int, errno int) +//sys Pread(fd int, p []byte, offset int64) (n int, errno int) +//sys Pwrite(fd int, p []byte, offset int64) (n int, errno int) +//sys Read(fd int, p []byte) (n int, errno int) +//sys Readlink(path string, buf []byte) (n int, errno int) +//sys Rename(from string, to string) (errno int) +//sys Revoke(path string) (errno int) +//sys Rmdir(path string) (errno int) +//sys Seek(fd int, offset int64, whence int) (newoffset int64, errno int) = SYS_LSEEK +//sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (errno int) +//sys Setegid(egid int) (errno int) +//sys Seteuid(euid int) (errno int) +//sys Setgid(gid int) (errno int) +//sys Setlogin(name string) (errno int) +//sys Setpgid(pid int, pgid int) (errno int) +//sys Setpriority(which int, who int, prio int) (errno int) +//sys Setregid(rgid int, egid int) (errno int) +//sys Setreuid(ruid int, euid int) (errno int) +//sys Setrlimit(which int, lim *Rlimit) (errno int) +//sys Setsid() (pid int, errno int) +//sys Settimeofday(tp *Timeval) (errno int) +//sys Setuid(uid int) (errno int) +//sys Stat(path string, stat *Stat_t) (errno int) +//sys Statfs(path string, stat *Statfs_t) (errno int) +//sys Symlink(path string, link string) (errno int) +//sys Sync() (errno int) +//sys Truncate(path string, length int64) (errno int) +//sys Umask(newmask int) (errno int) +//sys Undelete(path string) (errno int) +//sys Unlink(path string) (errno int) +//sys Unmount(path string, flags int) (errno int) +//sys Write(fd int, p []byte) (n int, errno int) +//sys read(fd int, buf *byte, nbuf int) (n int, errno int) +//sys write(fd int, buf *byte, nbuf int) (n int, errno int) + + +/* + * Unimplemented + */ +// Profil +// Sigaction +// Sigprocmask +// Getlogin +// Sigpending +// Sigaltstack +// Ioctl +// Reboot +// Execve +// Vfork +// Sbrk +// Sstk +// Ovadvise +// Mincore +// Setitimer +// Swapon +// Select +// Sigsuspend +// Readv +// Writev +// Nfssvc +// Getfh +// Quotactl +// Mount +// Csops +// Waitid +// Add_profil +// Kdebug_trace +// Sigreturn +// Mmap +// Mlock +// Munlock +// Atsocket +// Kqueue_from_portset_np +// Kqueue_portset +// Getattrlist +// Setattrlist +// Getdirentriesattr +// Searchfs +// Delete +// Copyfile +// Poll +// Watchevent +// Waitevent +// Modwatch +// Getxattr +// Fgetxattr +// Setxattr +// Fsetxattr +// Removexattr +// Fremovexattr +// Listxattr +// Flistxattr +// Fsctl +// Initgroups +// Posix_spawn +// Nfsclnt +// Fhopen +// Minherit +// Semsys +// Msgsys +// Shmsys +// Semctl +// Semget +// Semop +// Msgctl +// Msgget +// Msgsnd +// Msgrcv +// Shmat +// Shmctl +// Shmdt +// Shmget +// Shm_open +// Shm_unlink +// Sem_open +// Sem_close +// Sem_unlink +// Sem_wait +// Sem_trywait +// Sem_post +// Sem_getvalue +// Sem_init +// Sem_destroy +// Open_extended +// Umask_extended +// Stat_extended +// Lstat_extended +// Fstat_extended +// Chmod_extended +// Fchmod_extended +// Access_extended +// Settid +// Gettid +// Setsgroups +// Getsgroups +// Setwgroups +// Getwgroups +// Mkfifo_extended +// Mkdir_extended +// Identitysvc +// Shared_region_check_np +// Shared_region_map_np +// __pthread_mutex_destroy +// __pthread_mutex_init +// __pthread_mutex_lock +// __pthread_mutex_trylock +// __pthread_mutex_unlock +// __pthread_cond_init +// __pthread_cond_destroy +// __pthread_cond_broadcast +// __pthread_cond_signal +// Setsid_with_pid +// __pthread_cond_timedwait +// Aio_fsync +// Aio_return +// Aio_suspend +// Aio_cancel +// Aio_error +// Aio_read +// Aio_write +// Lio_listio +// __pthread_cond_wait +// Iopolicysys +// Mlockall +// Munlockall +// __pthread_kill +// __pthread_sigmask +// __sigwait +// __disable_threadsignal +// __pthread_markcancel +// __pthread_canceled +// __semwait_signal +// Proc_info +// Sendfile +// Stat64_extended +// Lstat64_extended +// Fstat64_extended +// __pthread_chdir +// __pthread_fchdir +// Audit +// Auditon +// Getauid +// Setauid +// Getaudit +// Setaudit +// Getaudit_addr +// Setaudit_addr +// Auditctl +// Bsdthread_create +// Bsdthread_terminate +// Stack_snapshot +// Bsdthread_register +// Workq_open +// Workq_ops +// __mac_execve +// __mac_syscall +// __mac_get_file +// __mac_set_file +// __mac_get_link +// __mac_set_link +// __mac_get_proc +// __mac_set_proc +// __mac_get_fd +// __mac_set_fd +// __mac_get_pid +// __mac_get_lcid +// __mac_get_lctx +// __mac_set_lctx +// Setlcid +// Read_nocancel +// Write_nocancel +// Open_nocancel +// Close_nocancel +// Wait4_nocancel +// Recvmsg_nocancel +// Sendmsg_nocancel +// Recvfrom_nocancel +// Accept_nocancel +// Msync_nocancel +// Fcntl_nocancel +// Select_nocancel +// Fsync_nocancel +// Connect_nocancel +// Sigsuspend_nocancel +// Readv_nocancel +// Writev_nocancel +// Sendto_nocancel +// Pread_nocancel +// Pwrite_nocancel +// Waitid_nocancel +// Poll_nocancel +// Msgsnd_nocancel +// Msgrcv_nocancel +// Sem_wait_nocancel +// Aio_suspend_nocancel +// __sigwait_nocancel +// __semwait_signal_nocancel +// __mac_mount +// __mac_get_mount +// __mac_getfsstat |
