github.com/nibnait/go-learn@v0.0.0-20220227013611-dfa47ea6d2da/src/pkg/mod/golang.org/x/sys@v0.0.0-20210630005230-0f9fa26af87c/unix/syscall_freebsd_amd64.go (about) 1 // Copyright 2009 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build amd64 && freebsd 6 // +build amd64,freebsd 7 8 package unix 9 10 import ( 11 "syscall" 12 "unsafe" 13 ) 14 15 func setTimespec(sec, nsec int64) Timespec { 16 return Timespec{Sec: sec, Nsec: nsec} 17 } 18 19 func setTimeval(sec, usec int64) Timeval { 20 return Timeval{Sec: sec, Usec: usec} 21 } 22 23 func SetKevent(k *Kevent_t, fd, mode, flags int) { 24 k.Ident = uint64(fd) 25 k.Filter = int16(mode) 26 k.Flags = uint16(flags) 27 } 28 29 func (iov *Iovec) SetLen(length int) { 30 iov.Len = uint64(length) 31 } 32 33 func (msghdr *Msghdr) SetControllen(length int) { 34 msghdr.Controllen = uint32(length) 35 } 36 37 func (msghdr *Msghdr) SetIovlen(length int) { 38 msghdr.Iovlen = int32(length) 39 } 40 41 func (cmsg *Cmsghdr) SetLen(length int) { 42 cmsg.Len = uint32(length) 43 } 44 45 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 46 var writtenOut uint64 = 0 47 _, _, e1 := Syscall9(SYS_SENDFILE, uintptr(infd), uintptr(outfd), uintptr(*offset), uintptr(count), 0, uintptr(unsafe.Pointer(&writtenOut)), 0, 0, 0) 48 49 written = int(writtenOut) 50 51 if e1 != 0 { 52 err = e1 53 } 54 return 55 } 56 57 func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) 58 59 func PtraceGetFsBase(pid int, fsbase *int64) (err error) { 60 return ptrace(PTRACE_GETFSBASE, pid, uintptr(unsafe.Pointer(fsbase)), 0) 61 } 62 63 func PtraceIO(req int, pid int, addr uintptr, out []byte, countin int) (count int, err error) { 64 ioDesc := PtraceIoDesc{Op: int32(req), Offs: (*byte)(unsafe.Pointer(addr)), Addr: (*byte)(unsafe.Pointer(&out[0])), Len: uint64(countin)} 65 err = ptrace(PTRACE_IO, pid, uintptr(unsafe.Pointer(&ioDesc)), 0) 66 return int(ioDesc.Len), err 67 }