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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// TODO(rsc): Rewrite all nn(SP) references into name+(nn-8)(FP)
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// so that go vet can check that they are correct.
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// +build 386,linux
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package unix
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import (
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"unsafe"
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)
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func setTimespec(sec, nsec int64) Timespec {
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return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
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}
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func setTimeval(sec, usec int64) Timeval {
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return Timeval{Sec: int32(sec), Usec: int32(usec)}
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}
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//sysnb pipe(p *[2]_C_int) (err error)
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func Pipe(p []int) (err error) {
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if len(p) != 2 {
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return EINVAL
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}
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var pp [2]_C_int
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err = pipe(&pp)
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p[0] = int(pp[0])
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p[1] = int(pp[1])
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return
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}
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//sysnb pipe2(p *[2]_C_int, flags int) (err error)
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func Pipe2(p []int, flags int) (err error) {
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if len(p) != 2 {
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return EINVAL
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}
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var pp [2]_C_int
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err = pipe2(&pp, flags)
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p[0] = int(pp[0])
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p[1] = int(pp[1])
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return
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}
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// 64-bit file system and 32-bit uid calls
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// (386 default is 32-bit file system and 16-bit uid).
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//sys dup2(oldfd int, newfd int) (err error)
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//sysnb EpollCreate(size int) (fd int, err error)
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//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
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//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64_64
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//sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32
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//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
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//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
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//sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
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//sysnb Getegid() (egid int) = SYS_GETEGID32
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//sysnb Geteuid() (euid int) = SYS_GETEUID32
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//sysnb Getgid() (gid int) = SYS_GETGID32
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//sysnb Getuid() (uid int) = SYS_GETUID32
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//sysnb InotifyInit() (fd int, err error)
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//sys Ioperm(from int, num int, on int) (err error)
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//sys Iopl(level int) (err error)
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//sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32
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//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
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//sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
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//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
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//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
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//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
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//sys setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32
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//sys setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32
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//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32
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//sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32
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//sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32
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//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32
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//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
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//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
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//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
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//sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
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//sys Ustat(dev int, ubuf *Ustat_t) (err error)
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//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
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//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
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//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
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//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
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//sys Pause() (err error)
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func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
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page := uintptr(offset / 4096)
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if offset != int64(page)*4096 {
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return 0, EINVAL
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}
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return mmap2(addr, length, prot, flags, fd, page)
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}
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type rlimit32 struct {
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Cur uint32
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Max uint32
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}
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//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT
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const rlimInf32 = ^uint32(0)
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const rlimInf64 = ^uint64(0)
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func Getrlimit(resource int, rlim *Rlimit) (err error) {
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err = prlimit(0, resource, nil, rlim)
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if err != ENOSYS {
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return err
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}
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rl := rlimit32{}
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err = getrlimit(resource, &rl)
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if err != nil {
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return
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}
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if rl.Cur == rlimInf32 {
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rlim.Cur = rlimInf64
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} else {
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rlim.Cur = uint64(rl.Cur)
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}
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if rl.Max == rlimInf32 {
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rlim.Max = rlimInf64
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} else {
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rlim.Max = uint64(rl.Max)
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}
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return
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}
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//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
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func Setrlimit(resource int, rlim *Rlimit) (err error) {
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err = prlimit(0, resource, rlim, nil)
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if err != ENOSYS {
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return err
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}
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rl := rlimit32{}
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if rlim.Cur == rlimInf64 {
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rl.Cur = rlimInf32
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} else if rlim.Cur < uint64(rlimInf32) {
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rl.Cur = uint32(rlim.Cur)
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} else {
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return EINVAL
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}
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if rlim.Max == rlimInf64 {
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rl.Max = rlimInf32
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} else if rlim.Max < uint64(rlimInf32) {
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rl.Max = uint32(rlim.Max)
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} else {
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return EINVAL
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}
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return setrlimit(resource, &rl)
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}
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func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
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newoffset, errno := seek(fd, offset, whence)
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if errno != 0 {
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return 0, errno
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}
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return newoffset, nil
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}
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//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
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//sysnb Gettimeofday(tv *Timeval) (err error)
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//sysnb Time(t *Time_t) (tt Time_t, err error)
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//sys Utime(path string, buf *Utimbuf) (err error)
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//sys utimes(path string, times *[2]Timeval) (err error)
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// On x86 Linux, all the socket calls go through an extra indirection,
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// I think because the 5-register system call interface can't handle
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// the 6-argument calls like sendto and recvfrom. Instead the
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// arguments to the underlying system call are the number below
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// and a pointer to an array of uintptr. We hide the pointer in the
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// socketcall assembly to avoid allocation on every system call.
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const (
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// see linux/net.h
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_SOCKET = 1
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_BIND = 2
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_CONNECT = 3
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_LISTEN = 4
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_ACCEPT = 5
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_GETSOCKNAME = 6
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_GETPEERNAME = 7
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_SOCKETPAIR = 8
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_SEND = 9
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_RECV = 10
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_SENDTO = 11
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_RECVFROM = 12
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_SHUTDOWN = 13
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_SETSOCKOPT = 14
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_GETSOCKOPT = 15
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_SENDMSG = 16
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_RECVMSG = 17
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_ACCEPT4 = 18
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_RECVMMSG = 19
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_SENDMMSG = 20
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)
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func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) {
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fd, e := socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) {
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fd, e := socketcall(_ACCEPT4, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags), 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) {
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_, e := rawsocketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) {
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_, e := rawsocketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) {
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_, e := rawsocketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd)), 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) {
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_, e := socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) {
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_, e := socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func socket(domain int, typ int, proto int) (fd int, err error) {
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fd, e := rawsocketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0)
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if e != 0 {
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err = e
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}
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return
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}
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func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
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_, e := socketcall(_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
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Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) {
|
|
Packit |
63bb0d |
_, e := socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), vallen, 0)
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) {
|
|
Packit |
63bb0d |
var base uintptr
|
|
Packit |
63bb0d |
if len(p) > 0 {
|
|
Packit |
63bb0d |
base = uintptr(unsafe.Pointer(&p[0]))
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
n, e := socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen)))
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) {
|
|
Packit |
63bb0d |
var base uintptr
|
|
Packit |
63bb0d |
if len(p) > 0 {
|
|
Packit |
63bb0d |
base = uintptr(unsafe.Pointer(&p[0]))
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
_, e := socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen))
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func recvmsg(s int, msg *Msghdr, flags int) (n int, err error) {
|
|
Packit |
63bb0d |
n, e := socketcall(_RECVMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func sendmsg(s int, msg *Msghdr, flags int) (n int, err error) {
|
|
Packit |
63bb0d |
n, e := socketcall(_SENDMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func Listen(s int, n int) (err error) {
|
|
Packit |
63bb0d |
_, e := socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0)
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func Shutdown(s, how int) (err error) {
|
|
Packit |
63bb0d |
_, e := socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0)
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func Fstatfs(fd int, buf *Statfs_t) (err error) {
|
|
Packit |
63bb0d |
_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func Statfs(path string, buf *Statfs_t) (err error) {
|
|
Packit |
63bb0d |
pathp, err := BytePtrFromString(path)
|
|
Packit |
63bb0d |
if err != nil {
|
|
Packit |
63bb0d |
return err
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
|
|
Packit |
63bb0d |
if e != 0 {
|
|
Packit |
63bb0d |
err = e
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func (r *PtraceRegs) PC() uint64 { return uint64(uint32(r.Eip)) }
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func (r *PtraceRegs) SetPC(pc uint64) { r.Eip = int32(pc) }
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func (iov *Iovec) SetLen(length int) {
|
|
Packit |
63bb0d |
iov.Len = uint32(length)
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func (msghdr *Msghdr) SetControllen(length int) {
|
|
Packit |
63bb0d |
msghdr.Controllen = uint32(length)
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func (msghdr *Msghdr) SetIovlen(length int) {
|
|
Packit |
63bb0d |
msghdr.Iovlen = uint32(length)
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func (cmsg *Cmsghdr) SetLen(length int) {
|
|
Packit |
63bb0d |
cmsg.Len = uint32(length)
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
//sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
|
|
Packit |
63bb0d |
|
|
Packit |
63bb0d |
func Poll(fds []PollFd, timeout int) (n int, err error) {
|
|
Packit |
63bb0d |
if len(fds) == 0 {
|
|
Packit |
63bb0d |
return poll(nil, 0, timeout)
|
|
Packit |
63bb0d |
}
|
|
Packit |
63bb0d |
return poll(&fds[0], len(fds), timeout)
|
|
Packit |
63bb0d |
}
|