diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_linux_386.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_linux_386.go | 399 |
1 files changed, 399 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux_386.go b/vendor/golang.org/x/sys/unix/syscall_linux_386.go new file mode 100644 index 00000000..2b881b97 --- /dev/null +++ b/vendor/golang.org/x/sys/unix/syscall_linux_386.go @@ -0,0 +1,399 @@ +// 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. + +// TODO(rsc): Rewrite all nn(SP) references into name+(nn-8)(FP) +// so that go vet can check that they are correct. + +// +build 386,linux + +package unix + +import ( + "syscall" + "unsafe" +) + +func Getpagesize() int { return 4096 } + +func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } + +func NsecToTimespec(nsec int64) (ts Timespec) { + ts.Sec = int32(nsec / 1e9) + ts.Nsec = int32(nsec % 1e9) + return +} + +func NsecToTimeval(nsec int64) (tv Timeval) { + nsec += 999 // round up to microsecond + tv.Sec = int32(nsec / 1e9) + tv.Usec = int32(nsec % 1e9 / 1e3) + return +} + +//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) + p[0] = int(pp[0]) + p[1] = int(pp[1]) + return +} + +//sysnb pipe2(p *[2]_C_int, flags int) (err error) + +func Pipe2(p []int, flags int) (err error) { + if len(p) != 2 { + return EINVAL + } + var pp [2]_C_int + err = pipe2(&pp, flags) + p[0] = int(pp[0]) + p[1] = int(pp[1]) + return +} + +// 64-bit file system and 32-bit uid calls +// (386 default is 32-bit file system and 16-bit uid). +//sys Dup2(oldfd int, newfd int) (err error) +//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64_64 +//sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 +//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 +//sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 +//sysnb Getegid() (egid int) = SYS_GETEGID32 +//sysnb Geteuid() (euid int) = SYS_GETEUID32 +//sysnb Getgid() (gid int) = SYS_GETGID32 +//sysnb Getuid() (uid int) = SYS_GETUID32 +//sysnb InotifyInit() (fd int, err error) +//sys Ioperm(from int, num int, on int) (err error) +//sys Iopl(level int) (err error) +//sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 +//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 +//sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 +//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 +//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 +//sys Setfsgid(gid int) (err error) = SYS_SETFSGID32 +//sys Setfsuid(uid int) (err error) = SYS_SETFSUID32 +//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 +//sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 +//sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 +//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 +//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) +//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 +//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) +//sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 +//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 +//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 +//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT + +//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) +//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) +//sys Pause() (err error) + +func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { + page := uintptr(offset / 4096) + if offset != int64(page)*4096 { + return 0, EINVAL + } + return mmap2(addr, length, prot, flags, fd, page) +} + +type rlimit32 struct { + Cur uint32 + Max uint32 +} + +//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT + +const rlimInf32 = ^uint32(0) +const rlimInf64 = ^uint64(0) + +func Getrlimit(resource int, rlim *Rlimit) (err error) { + err = prlimit(0, resource, nil, rlim) + if err != ENOSYS { + return err + } + + rl := rlimit32{} + err = getrlimit(resource, &rl) + if err != nil { + return + } + + if rl.Cur == rlimInf32 { + rlim.Cur = rlimInf64 + } else { + rlim.Cur = uint64(rl.Cur) + } + + if rl.Max == rlimInf32 { + rlim.Max = rlimInf64 + } else { + rlim.Max = uint64(rl.Max) + } + return +} + +//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT + +func Setrlimit(resource int, rlim *Rlimit) (err error) { + err = prlimit(0, resource, rlim, nil) + if err != ENOSYS { + return err + } + + rl := rlimit32{} + if rlim.Cur == rlimInf64 { + rl.Cur = rlimInf32 + } else if rlim.Cur < uint64(rlimInf32) { + rl.Cur = uint32(rlim.Cur) + } else { + return EINVAL + } + if rlim.Max == rlimInf64 { + rl.Max = rlimInf32 + } else if rlim.Max < uint64(rlimInf32) { + rl.Max = uint32(rlim.Max) + } else { + return EINVAL + } + + return setrlimit(resource, &rl) +} + +// Underlying system call writes to newoffset via pointer. +// Implemented in assembly to avoid allocation. +func seek(fd int, offset int64, whence int) (newoffset int64, err syscall.Errno) + +func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { + newoffset, errno := seek(fd, offset, whence) + if errno != 0 { + return 0, errno + } + return newoffset, nil +} + +// Vsyscalls on amd64. +//sysnb Gettimeofday(tv *Timeval) (err error) +//sysnb Time(t *Time_t) (tt Time_t, err error) + +//sys Utime(path string, buf *Utimbuf) (err error) + +// On x86 Linux, all the socket calls go through an extra indirection, +// I think because the 5-register system call interface can't handle +// the 6-argument calls like sendto and recvfrom. Instead the +// arguments to the underlying system call are the number below +// and a pointer to an array of uintptr. We hide the pointer in the +// socketcall assembly to avoid allocation on every system call. + +const ( + // see linux/net.h + _SOCKET = 1 + _BIND = 2 + _CONNECT = 3 + _LISTEN = 4 + _ACCEPT = 5 + _GETSOCKNAME = 6 + _GETPEERNAME = 7 + _SOCKETPAIR = 8 + _SEND = 9 + _RECV = 10 + _SENDTO = 11 + _RECVFROM = 12 + _SHUTDOWN = 13 + _SETSOCKOPT = 14 + _GETSOCKOPT = 15 + _SENDMSG = 16 + _RECVMSG = 17 + _ACCEPT4 = 18 + _RECVMMSG = 19 + _SENDMMSG = 20 +) + +func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err syscall.Errno) +func rawsocketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err syscall.Errno) + +func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) { + fd, e := socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) { + fd, e := socketcall(_ACCEPT4, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags), 0, 0) + if e != 0 { + err = e + } + return +} + +func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) { + _, e := rawsocketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) { + _, e := rawsocketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) { + _, e := rawsocketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd)), 0, 0) + if e != 0 { + err = e + } + return +} + +func bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) { + _, e := socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) { + _, e := socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func socket(domain int, typ int, proto int) (fd int, err error) { + fd, e := rawsocketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) { + _, e := socketcall(_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0) + if e != 0 { + err = e + } + return +} + +func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) { + _, e := socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), vallen, 0) + if e != 0 { + err = e + } + return +} + +func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) { + var base uintptr + if len(p) > 0 { + base = uintptr(unsafe.Pointer(&p[0])) + } + n, e := socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen))) + if e != 0 { + err = e + } + return +} + +func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) { + var base uintptr + if len(p) > 0 { + base = uintptr(unsafe.Pointer(&p[0])) + } + _, e := socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen)) + if e != 0 { + err = e + } + return +} + +func recvmsg(s int, msg *Msghdr, flags int) (n int, err error) { + n, e := socketcall(_RECVMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func sendmsg(s int, msg *Msghdr, flags int) (n int, err error) { + n, e := socketcall(_SENDMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func Listen(s int, n int) (err error) { + _, e := socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func Shutdown(s, how int) (err error) { + _, e := socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0) + if e != 0 { + err = e + } + return +} + +func Fstatfs(fd int, buf *Statfs_t) (err error) { + _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) + if e != 0 { + err = e + } + return +} + +func Statfs(path string, buf *Statfs_t) (err error) { + pathp, err := BytePtrFromString(path) + if err != nil { + return err + } + _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) + if e != 0 { + err = e + } + return +} + +func (r *PtraceRegs) PC() uint64 { return uint64(uint32(r.Eip)) } + +func (r *PtraceRegs) SetPC(pc uint64) { r.Eip = int32(pc) } + +func (iov *Iovec) SetLen(length int) { + iov.Len = uint32(length) +} + +func (msghdr *Msghdr) SetControllen(length int) { + msghdr.Controllen = uint32(length) +} + +func (cmsg *Cmsghdr) SetLen(length int) { + cmsg.Len = uint32(length) +} + +//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) +} |