diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_linux.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_linux.go | 1108 |
1 files changed, 1108 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux.go b/vendor/golang.org/x/sys/unix/syscall_linux.go new file mode 100644 index 0000000..9ca104c --- /dev/null +++ b/vendor/golang.org/x/sys/unix/syscall_linux.go @@ -0,0 +1,1108 @@ +// 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. + +// Linux 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 ( + "syscall" + "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 Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error) + +func Link(oldpath string, newpath string) (err error) { + return Linkat(AT_FDCWD, oldpath, AT_FDCWD, newpath, 0) +} + +func Mkdir(path string, mode uint32) (err error) { + return Mkdirat(AT_FDCWD, path, mode) +} + +func Mknod(path string, mode uint32, dev int) (err error) { + return Mknodat(AT_FDCWD, path, mode, dev) +} + +func Open(path string, mode int, perm uint32) (fd int, err error) { + return openat(AT_FDCWD, path, mode|O_LARGEFILE, perm) +} + +//sys openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) + +func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) { + return openat(dirfd, path, flags|O_LARGEFILE, mode) +} + +//sys readlinkat(dirfd int, path string, buf []byte) (n int, err error) + +func Readlink(path string, buf []byte) (n int, err error) { + return readlinkat(AT_FDCWD, path, buf) +} + +func Rename(oldpath string, newpath string) (err error) { + return Renameat(AT_FDCWD, oldpath, AT_FDCWD, newpath) +} + +func Rmdir(path string) error { + return unlinkat(AT_FDCWD, path, AT_REMOVEDIR) +} + +//sys symlinkat(oldpath string, newdirfd int, newpath string) (err error) + +func Symlink(oldpath string, newpath string) (err error) { + return symlinkat(oldpath, AT_FDCWD, newpath) +} + +func Unlink(path string) error { + return unlinkat(AT_FDCWD, path, 0) +} + +//sys unlinkat(dirfd int, path string, flags int) (err error) + +func Unlinkat(dirfd int, path string, flags int) error { + return unlinkat(dirfd, path, flags) +} + +//sys utimes(path string, times *[2]Timeval) (err error) + +func Utimes(path string, tv []Timeval) error { + if tv == nil { + err := utimensat(AT_FDCWD, path, nil, 0) + if err != ENOSYS { + return err + } + return utimes(path, nil) + } + if len(tv) != 2 { + return EINVAL + } + var ts [2]Timespec + ts[0] = NsecToTimespec(TimevalToNsec(tv[0])) + ts[1] = NsecToTimespec(TimevalToNsec(tv[1])) + err := utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) + if err != ENOSYS { + return err + } + return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error) + +func UtimesNano(path string, ts []Timespec) error { + if ts == nil { + err := utimensat(AT_FDCWD, path, nil, 0) + if err != ENOSYS { + return err + } + return utimes(path, nil) + } + if len(ts) != 2 { + return EINVAL + } + err := utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) + if err != ENOSYS { + return err + } + // If the utimensat syscall isn't available (utimensat was added to Linux + // in 2.6.22, Released, 8 July 2007) then fall back to utimes + var tv [2]Timeval + for i := 0; i < 2; i++ { + tv[i].Sec = ts[i].Sec + tv[i].Usec = ts[i].Nsec / 1000 + } + return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[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) +} + +//sys futimesat(dirfd int, path *byte, times *[2]Timeval) (err error) + +func Futimesat(dirfd int, path string, tv []Timeval) error { + pathp, err := BytePtrFromString(path) + if err != nil { + return err + } + if tv == nil { + return futimesat(dirfd, pathp, nil) + } + if len(tv) != 2 { + return EINVAL + } + return futimesat(dirfd, pathp, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +func Futimes(fd int, tv []Timeval) (err error) { + // Believe it or not, this is the best we can do on Linux + // (and is what glibc does). + return Utimes("/proc/self/fd/"+itoa(fd), tv) +} + +const ImplementsGetwd = true + +//sys Getcwd(buf []byte) (n int, err error) + +func Getwd() (wd string, err error) { + var buf [PathMax]byte + n, err := Getcwd(buf[0:]) + if err != nil { + return "", err + } + // Getcwd returns the number of bytes written to buf, including the NUL. + if n < 1 || n > len(buf) || buf[n-1] != 0 { + return "", EINVAL + } + return string(buf[0 : n-1]), nil +} + +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 1<<16 on Linux. + if n < 0 || n > 1<<20 { + 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]) +} + +type WaitStatus uint32 + +// 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. At least that's the idea. +// There are various irregularities. For example, the +// "continued" status is 0xFFFF, distinguishing itself +// from stopped via the core dump bit. + +const ( + mask = 0x7F + core = 0x80 + exited = 0x00 + stopped = 0x7F + shift = 8 +) + +func (w WaitStatus) Exited() bool { return w&mask == exited } + +func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != exited } + +func (w WaitStatus) Stopped() bool { return w&0xFF == stopped } + +func (w WaitStatus) Continued() bool { return w == 0xFFFF } + +func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 } + +func (w WaitStatus) ExitStatus() int { + if !w.Exited() { + return -1 + } + return int(w>>shift) & 0xFF +} + +func (w WaitStatus) Signal() syscall.Signal { + if !w.Signaled() { + return -1 + } + return syscall.Signal(w & mask) +} + +func (w WaitStatus) StopSignal() syscall.Signal { + if !w.Stopped() { + return -1 + } + return syscall.Signal(w>>shift) & 0xFF +} + +func (w WaitStatus) TrapCause() int { + if w.StopSignal() != SIGTRAP { + return -1 + } + return int(w>>shift) >> 8 +} + +//sys wait4(pid int, wstatus *_C_int, options int, rusage *Rusage) (wpid int, err error) + +func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { + var status _C_int + wpid, err = wait4(pid, &status, options, rusage) + if wstatus != nil { + *wstatus = WaitStatus(status) + } + return +} + +func Mkfifo(path string, mode uint32) (err error) { + return Mknod(path, mode|S_IFIFO, 0) +} + +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) + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + 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 + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + 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 + // Don't count trailing NUL for abstract address. + sl-- + } + + return unsafe.Pointer(&sa.raw), sl, nil +} + +type SockaddrLinklayer struct { + Protocol uint16 + Ifindex int + Hatype uint16 + Pkttype uint8 + Halen uint8 + Addr [8]byte + raw RawSockaddrLinklayer +} + +func (sa *SockaddrLinklayer) sockaddr() (unsafe.Pointer, _Socklen, error) { + if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff { + return nil, 0, EINVAL + } + sa.raw.Family = AF_PACKET + sa.raw.Protocol = sa.Protocol + sa.raw.Ifindex = int32(sa.Ifindex) + sa.raw.Hatype = sa.Hatype + sa.raw.Pkttype = sa.Pkttype + sa.raw.Halen = sa.Halen + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return unsafe.Pointer(&sa.raw), SizeofSockaddrLinklayer, nil +} + +type SockaddrNetlink struct { + Family uint16 + Pad uint16 + Pid uint32 + Groups uint32 + raw RawSockaddrNetlink +} + +func (sa *SockaddrNetlink) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Family = AF_NETLINK + sa.raw.Pad = sa.Pad + sa.raw.Pid = sa.Pid + sa.raw.Groups = sa.Groups + return unsafe.Pointer(&sa.raw), SizeofSockaddrNetlink, nil +} + +type SockaddrHCI struct { + Dev uint16 + Channel uint16 + raw RawSockaddrHCI +} + +func (sa *SockaddrHCI) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Family = AF_BLUETOOTH + sa.raw.Dev = sa.Dev + sa.raw.Channel = sa.Channel + return unsafe.Pointer(&sa.raw), SizeofSockaddrHCI, nil +} + +func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) { + switch rsa.Addr.Family { + case AF_NETLINK: + pp := (*RawSockaddrNetlink)(unsafe.Pointer(rsa)) + sa := new(SockaddrNetlink) + sa.Family = pp.Family + sa.Pad = pp.Pad + sa.Pid = pp.Pid + sa.Groups = pp.Groups + return sa, nil + + case AF_PACKET: + pp := (*RawSockaddrLinklayer)(unsafe.Pointer(rsa)) + sa := new(SockaddrLinklayer) + sa.Protocol = pp.Protocol + sa.Ifindex = int(pp.Ifindex) + sa.Hatype = pp.Hatype + sa.Pkttype = pp.Pkttype + sa.Halen = pp.Halen + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, nil + + case AF_UNIX: + pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) + sa := new(SockaddrUnix) + if pp.Path[0] == 0 { + // "Abstract" Unix domain socket. + // Rewrite leading NUL as @ for textual display. + // (This is the standard convention.) + // Not friendly to overwrite in place, + // but the callers below don't care. + pp.Path[0] = '@' + } + + // Assume path ends at NUL. + // This is not technically the Linux 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++ + } + bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] + sa.Name = string(bytes) + 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]) + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + 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 + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, nil + } + return nil, EAFNOSUPPORT +} + +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 Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + nfd, err = accept4(fd, &rsa, &len, flags) + if err != nil { + return + } + if len > SizeofSockaddrAny { + panic("RawSockaddrAny too small") + } + sa, err = anyToSockaddr(&rsa) + if err != nil { + Close(nfd) + nfd = 0 + } + return +} + +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) +} + +func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) { + vallen := _Socklen(4) + err = getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen) + return value, err +} + +func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) { + var value IPMreq + vallen := _Socklen(SizeofIPMreq) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) { + var value IPMreqn + vallen := _Socklen(SizeofIPMreqn) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) { + var value IPv6Mreq + vallen := _Socklen(SizeofIPv6Mreq) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) { + var value IPv6MTUInfo + vallen := _Socklen(SizeofIPv6MTUInfo) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptICMPv6Filter(fd, level, opt int) (*ICMPv6Filter, error) { + var value ICMPv6Filter + vallen := _Socklen(SizeofICMPv6Filter) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptUcred(fd, level, opt int) (*Ucred, error) { + var value Ucred + vallen := _Socklen(SizeofUcred) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq)) +} + +func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { + var msg Msghdr + var rsa RawSockaddrAny + msg.Name = (*byte)(unsafe.Pointer(&rsa)) + msg.Namelen = uint32(SizeofSockaddrAny) + var iov Iovec + if len(p) > 0 { + iov.Base = (*byte)(unsafe.Pointer(&p[0])) + iov.SetLen(len(p)) + } + var dummy byte + if len(oob) > 0 { + // receive at least one normal byte + if len(p) == 0 { + iov.Base = &dummy + iov.SetLen(1) + } + msg.Control = (*byte)(unsafe.Pointer(&oob[0])) + msg.SetControllen(len(oob)) + } + msg.Iov = &iov + msg.Iovlen = 1 + if n, err = recvmsg(fd, &msg, flags); err != nil { + return + } + oobn = int(msg.Controllen) + recvflags = int(msg.Flags) + // source address is only specified if the socket is unconnected + if rsa.Addr.Family != AF_UNSPEC { + from, err = anyToSockaddr(&rsa) + } + return +} + +func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) { + _, err = SendmsgN(fd, p, oob, to, flags) + return +} + +func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) { + var ptr unsafe.Pointer + var salen _Socklen + if to != nil { + var err error + ptr, salen, err = to.sockaddr() + if err != nil { + return 0, err + } + } + var msg Msghdr + msg.Name = (*byte)(unsafe.Pointer(ptr)) + msg.Namelen = uint32(salen) + var iov Iovec + if len(p) > 0 { + iov.Base = (*byte)(unsafe.Pointer(&p[0])) + iov.SetLen(len(p)) + } + var dummy byte + if len(oob) > 0 { + // send at least one normal byte + if len(p) == 0 { + iov.Base = &dummy + iov.SetLen(1) + } + msg.Control = (*byte)(unsafe.Pointer(&oob[0])) + msg.SetControllen(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 +} + +// BindToDevice binds the socket associated with fd to device. +func BindToDevice(fd int, device string) (err error) { + return SetsockoptString(fd, SOL_SOCKET, SO_BINDTODEVICE, device) +} + +//sys ptrace(request int, pid int, addr uintptr, data uintptr) (err error) + +func ptracePeek(req int, pid int, addr uintptr, out []byte) (count int, err error) { + // The peek requests are machine-size oriented, so we wrap it + // to retrieve arbitrary-length data. + + // The ptrace syscall differs from glibc's ptrace. + // Peeks returns the word in *data, not as the return value. + + var buf [sizeofPtr]byte + + // Leading edge. PEEKTEXT/PEEKDATA don't require aligned + // access (PEEKUSER warns that it might), but if we don't + // align our reads, we might straddle an unmapped page + // boundary and not get the bytes leading up to the page + // boundary. + n := 0 + if addr%sizeofPtr != 0 { + err = ptrace(req, pid, addr-addr%sizeofPtr, uintptr(unsafe.Pointer(&buf[0]))) + if err != nil { + return 0, err + } + n += copy(out, buf[addr%sizeofPtr:]) + out = out[n:] + } + + // Remainder. + for len(out) > 0 { + // We use an internal buffer to guarantee alignment. + // It's not documented if this is necessary, but we're paranoid. + err = ptrace(req, pid, addr+uintptr(n), uintptr(unsafe.Pointer(&buf[0]))) + if err != nil { + return n, err + } + copied := copy(out, buf[0:]) + n += copied + out = out[copied:] + } + + return n, nil +} + +func PtracePeekText(pid int, addr uintptr, out []byte) (count int, err error) { + return ptracePeek(PTRACE_PEEKTEXT, pid, addr, out) +} + +func PtracePeekData(pid int, addr uintptr, out []byte) (count int, err error) { + return ptracePeek(PTRACE_PEEKDATA, pid, addr, out) +} + +func ptracePoke(pokeReq int, peekReq int, pid int, addr uintptr, data []byte) (count int, err error) { + // As for ptracePeek, we need to align our accesses to deal + // with the possibility of straddling an invalid page. + + // Leading edge. + n := 0 + if addr%sizeofPtr != 0 { + var buf [sizeofPtr]byte + err = ptrace(peekReq, pid, addr-addr%sizeofPtr, uintptr(unsafe.Pointer(&buf[0]))) + if err != nil { + return 0, err + } + n += copy(buf[addr%sizeofPtr:], data) + word := *((*uintptr)(unsafe.Pointer(&buf[0]))) + err = ptrace(pokeReq, pid, addr-addr%sizeofPtr, word) + if err != nil { + return 0, err + } + data = data[n:] + } + + // Interior. + for len(data) > sizeofPtr { + word := *((*uintptr)(unsafe.Pointer(&data[0]))) + err = ptrace(pokeReq, pid, addr+uintptr(n), word) + if err != nil { + return n, err + } + n += sizeofPtr + data = data[sizeofPtr:] + } + + // Trailing edge. + if len(data) > 0 { + var buf [sizeofPtr]byte + err = ptrace(peekReq, pid, addr+uintptr(n), uintptr(unsafe.Pointer(&buf[0]))) + if err != nil { + return n, err + } + copy(buf[0:], data) + word := *((*uintptr)(unsafe.Pointer(&buf[0]))) + err = ptrace(pokeReq, pid, addr+uintptr(n), word) + if err != nil { + return n, err + } + n += len(data) + } + + return n, nil +} + +func PtracePokeText(pid int, addr uintptr, data []byte) (count int, err error) { + return ptracePoke(PTRACE_POKETEXT, PTRACE_PEEKTEXT, pid, addr, data) +} + +func PtracePokeData(pid int, addr uintptr, data []byte) (count int, err error) { + return ptracePoke(PTRACE_POKEDATA, PTRACE_PEEKDATA, pid, addr, data) +} + +func PtraceGetRegs(pid int, regsout *PtraceRegs) (err error) { + return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout))) +} + +func PtraceSetRegs(pid int, regs *PtraceRegs) (err error) { + return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs))) +} + +func PtraceSetOptions(pid int, options int) (err error) { + return ptrace(PTRACE_SETOPTIONS, pid, 0, uintptr(options)) +} + +func PtraceGetEventMsg(pid int) (msg uint, err error) { + var data _C_long + err = ptrace(PTRACE_GETEVENTMSG, pid, 0, uintptr(unsafe.Pointer(&data))) + msg = uint(data) + return +} + +func PtraceCont(pid int, signal int) (err error) { + return ptrace(PTRACE_CONT, pid, 0, uintptr(signal)) +} + +func PtraceSyscall(pid int, signal int) (err error) { + return ptrace(PTRACE_SYSCALL, pid, 0, uintptr(signal)) +} + +func PtraceSingleStep(pid int) (err error) { return ptrace(PTRACE_SINGLESTEP, pid, 0, 0) } + +func PtraceAttach(pid int) (err error) { return ptrace(PTRACE_ATTACH, pid, 0, 0) } + +func PtraceDetach(pid int) (err error) { return ptrace(PTRACE_DETACH, pid, 0, 0) } + +//sys reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) + +func Reboot(cmd int) (err error) { + return reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, cmd, "") +} + +func clen(n []byte) int { + for i := 0; i < len(n); i++ { + if n[i] == 0 { + return i + } + } + return len(n) +} + +func ReadDirent(fd int, buf []byte) (n int, err error) { + return Getdents(fd, buf) +} + +func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) { + origlen := len(buf) + count = 0 + for max != 0 && len(buf) > 0 { + dirent := (*Dirent)(unsafe.Pointer(&buf[0])) + buf = buf[dirent.Reclen:] + if dirent.Ino == 0 { // File absent in directory. + continue + } + bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0])) + var name = string(bytes[0:clen(bytes[:])]) + if name == "." || name == ".." { // Useless names + continue + } + max-- + count++ + names = append(names, name) + } + return origlen - len(buf), count, names +} + +//sys mount(source string, target string, fstype string, flags uintptr, data *byte) (err error) + +func Mount(source string, target string, fstype string, flags uintptr, data string) (err error) { + // Certain file systems get rather angry and EINVAL if you give + // them an empty string of data, rather than NULL. + if data == "" { + return mount(source, target, fstype, flags, nil) + } + datap, err := BytePtrFromString(data) + if err != nil { + return err + } + return mount(source, target, fstype, flags, datap) +} + +// Sendto +// Recvfrom +// Socketpair + +/* + * Direct access + */ +//sys Acct(path string) (err error) +//sys Adjtimex(buf *Timex) (state int, err error) +//sys Chdir(path string) (err error) +//sys Chroot(path string) (err error) +//sys ClockGettime(clockid int32, time *Timespec) (err error) +//sys Close(fd int) (err error) +//sys Dup(oldfd int) (fd int, err error) +//sys Dup3(oldfd int, newfd int, flags int) (err error) +//sysnb EpollCreate(size int) (fd int, err error) +//sysnb EpollCreate1(flag int) (fd int, err error) +//sysnb EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error) +//sys Exit(code int) = SYS_EXIT_GROUP +//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) +//sys Fallocate(fd int, mode uint32, off int64, len int64) (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 fcntl(fd int, cmd int, arg int) (val int, err error) +//sys Fdatasync(fd int) (err error) +//sys Flock(fd int, how int) (err error) +//sys Fsync(fd int) (err error) +//sys Getdents(fd int, buf []byte) (n int, err error) = SYS_GETDENTS64 +//sysnb Getpgid(pid int) (pgid int, err error) + +func Getpgrp() (pid int) { + pid, _ = Getpgid(0) + return +} + +//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 Gettid() (tid int) +//sys Getxattr(path string, attr string, dest []byte) (sz int, err error) +//sys InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error) +//sysnb InotifyInit1(flags int) (fd int, err error) +//sysnb InotifyRmWatch(fd int, watchdesc uint32) (success int, err error) +//sysnb Kill(pid int, sig syscall.Signal) (err error) +//sys Klogctl(typ int, buf []byte) (n int, err error) = SYS_SYSLOG +//sys Listxattr(path string, dest []byte) (sz int, err error) +//sys Mkdirat(dirfd int, path string, mode uint32) (err error) +//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) +//sys Nanosleep(time *Timespec, leftover *Timespec) (err error) +//sys PivotRoot(newroot string, putold string) (err error) = SYS_PIVOT_ROOT +//sysnb prlimit(pid int, resource int, old *Rlimit, newlimit *Rlimit) (err error) = SYS_PRLIMIT64 +//sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) +//sys read(fd int, p []byte) (n int, err error) +//sys Removexattr(path string, attr string) (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 Setns(fd int, nstype int) (err error) + +// issue 1435. +// On linux Setuid and Setgid only affects the current thread, not the process. +// This does not match what most callers expect so we must return an error +// here rather than letting the caller think that the call succeeded. + +func Setuid(uid int) (err error) { + return EOPNOTSUPP +} + +func Setgid(uid int) (err error) { + return EOPNOTSUPP +} + +//sys Setpriority(which int, who int, prio int) (err error) +//sys Setxattr(path string, attr string, data []byte, flags int) (err error) +//sys Sync() +//sysnb Sysinfo(info *Sysinfo_t) (err error) +//sys Tee(rfd int, wfd int, len int, flags int) (n int64, err error) +//sysnb Tgkill(tgid int, tid int, sig syscall.Signal) (err error) +//sysnb Times(tms *Tms) (ticks uintptr, err error) +//sysnb Umask(mask int) (oldmask int) +//sysnb Uname(buf *Utsname) (err error) +//sys Unmount(target string, flags int) (err error) = SYS_UMOUNT2 +//sys Unshare(flags int) (err error) +//sys Ustat(dev int, ubuf *Ustat_t) (err error) +//sys write(fd int, p []byte) (n int, err error) +//sys exitThread(code int) (err error) = SYS_EXIT +//sys readlen(fd int, p *byte, np int) (n int, err error) = SYS_READ +//sys writelen(fd int, p *byte, np int) (n int, err error) = SYS_WRITE + +// mmap varies by architecture; see syscall_linux_*.go. +//sys munmap(addr uintptr, length uintptr) (err error) + +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) +} + +//sys Madvise(b []byte, advice int) (err error) +//sys Mprotect(b []byte, prot int) (err error) +//sys Mlock(b []byte) (err error) +//sys Munlock(b []byte) (err error) +//sys Mlockall(flags int) (err error) +//sys Munlockall() (err error) + +/* + * Unimplemented + */ +// AddKey +// AfsSyscall +// Alarm +// ArchPrctl +// Brk +// Capget +// Capset +// ClockGetres +// ClockNanosleep +// ClockSettime +// Clone +// CreateModule +// DeleteModule +// EpollCtlOld +// EpollPwait +// EpollWaitOld +// Eventfd +// Execve +// Fgetxattr +// Flistxattr +// Fork +// Fremovexattr +// Fsetxattr +// Futex +// GetKernelSyms +// GetMempolicy +// GetRobustList +// GetThreadArea +// Getitimer +// Getpmsg +// IoCancel +// IoDestroy +// IoGetevents +// IoSetup +// IoSubmit +// Ioctl +// IoprioGet +// IoprioSet +// KexecLoad +// Keyctl +// Lgetxattr +// Llistxattr +// LookupDcookie +// Lremovexattr +// Lsetxattr +// Mbind +// MigratePages +// Mincore +// ModifyLdt +// Mount +// MovePages +// Mprotect +// MqGetsetattr +// MqNotify +// MqOpen +// MqTimedreceive +// MqTimedsend +// MqUnlink +// Mremap +// Msgctl +// Msgget +// Msgrcv +// Msgsnd +// Msync +// Newfstatat +// Nfsservctl +// Personality +// Poll +// Ppoll +// Pselect6 +// Ptrace +// Putpmsg +// QueryModule +// Quotactl +// Readahead +// Readv +// RemapFilePages +// RequestKey +// RestartSyscall +// RtSigaction +// RtSigpending +// RtSigprocmask +// RtSigqueueinfo +// RtSigreturn +// RtSigsuspend +// RtSigtimedwait +// SchedGetPriorityMax +// SchedGetPriorityMin +// SchedGetaffinity +// SchedGetparam +// SchedGetscheduler +// SchedRrGetInterval +// SchedSetaffinity +// SchedSetparam +// SchedYield +// Security +// Semctl +// Semget +// Semop +// Semtimedop +// SetMempolicy +// SetRobustList +// SetThreadArea +// SetTidAddress +// Shmat +// Shmctl +// Shmdt +// Shmget +// Sigaltstack +// Signalfd +// Swapoff +// Swapon +// Sysfs +// TimerCreate +// TimerDelete +// TimerGetoverrun +// TimerGettime +// TimerSettime +// Timerfd +// Tkill (obsolete) +// Tuxcall +// Umount2 +// Uselib +// Utimensat +// Vfork +// Vhangup +// Vmsplice +// Vserver +// Waitid +// _Sysctl |