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// 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.
package syscall
import "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 TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
func NsecToTimeval(nsec int64) (tv Timeval) {
nsec += 999 // round up to microsecond
tv.Sec = int32(nsec / 1e9)
tv.Usec = int32(nsec % 1e9 / 1e3)
return
}
// 64-bit file system and 32-bit uid calls
// (386 default is 32-bit file system and 16-bit uid).
//sys Chown(path string, uid int, gid int) (errno int) = SYS_CHOWN32
//sys Fchown(fd int, uid int, gid int) (errno int) = SYS_FCHOWN32
//sys Fstat(fd int, stat *Stat_t) (errno int) = SYS_FSTAT64
//sys Getegid() (egid int) = SYS_GETEGID32
//sys Geteuid() (euid int) = SYS_GETEUID32
//sys Getgid() (gid int) = SYS_GETGID32
//sys Getuid() (uid int) = SYS_GETUID32
//sys Ioperm(from int, num int, on int) (errno int)
//sys Iopl(level int) (errno int)
//sys Lchown(path string, uid int, gid int) (errno int) = SYS_LCHOWN32
//sys Lstat(path string, stat *Stat_t) (errno int) = SYS_LSTAT64
//sys Setfsgid(gid int) (errno int) = SYS_SETFSGID32
//sys Setfsuid(uid int) (errno int) = SYS_SETFSUID32
//sys Setgid(gid int) (errno int) = SYS_SETGID32
//sys Setregid(rgid int, egid int) (errno int) = SYS_SETREGID32
//sys Setresgid(rgid int, egid int, sgid int) (errno int) = SYS_SETRESGID32
//sys Setresuid(ruid int, euid int, suid int) (errno int) = SYS_SETRESUID32
//sys Setreuid(ruid int, euid int) (errno int) = SYS_SETREUID32
//sys Stat(path string, stat *Stat_t) (errno int) = SYS_STAT64
//sys SyncFileRange(fd int, off int64, n int64, flags int) (errno int)
//sys getgroups(n int, list *_Gid_t) (nn int, errno int) = SYS_GETGROUPS32
//sys setgroups(n int, list *_Gid_t) (errno int) = SYS_SETGROUPS32
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, errno int) = SYS__NEWSELECT
// Underlying system call writes to newoffset via pointer.
// Implemented in assembly to avoid allocation.
func Seek(fd int, offset int64, whence int) (newoffset int64, errno int)
// 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
)
func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, errno int)
func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, errno int) {
fd, errno = socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
return
}
func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
_, errno = socketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
return
}
func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (errno int) {
_, errno = socketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
return
}
func socketpair(domain int, typ int, proto int) (fd [2]int, errno int) {
var f [2]int
_, errno = socketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(proto), uintptr(unsafe.Pointer(&f)), 0, 0)
fd = f
return
}
func bind(s int, addr uintptr, addrlen _Socklen) (errno int) {
_, errno = socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
return
}
func connect(s int, addr uintptr, addrlen _Socklen) (errno int) {
_, errno = socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
return
}
func socket(domain int, typ int, proto int) (fd int, errno int) {
fd, errno = socketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0)
return
}
func setsockopt(s int, level int, name int, val uintptr, vallen int) (errno int) {
_, errno = socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(vallen), 0)
return
}
func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, errno int) {
var base uintptr
if len(p) > 0 {
base = uintptr(unsafe.Pointer(&p[0]))
}
n, errno = socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen)))
return
}
func sendto(s int, p []byte, flags int, to uintptr, addrlen _Socklen) (errno int) {
var base uintptr
if len(p) > 0 {
base = uintptr(unsafe.Pointer(&p[0]))
}
_, errno = socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), to, uintptr(addrlen))
return
}
func Listen(s int, n int) (errno int) {
_, errno = socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0)
return
}
func Shutdown(s, how int) (errno int) {
_, errno = socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0)
return
}
func Fstatfs(fd int, buf *Statfs_t) (errno int) {
_, _, e1 := Syscall(SYS_FSTATFS64, uintptr(fd), uintptr(unsafe.Sizeof(*buf)), uintptr(unsafe.Pointer(buf)))
errno = int(e1)
return
}
func Statfs(path string, buf *Statfs_t) (errno int) {
_, _, e1 := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(StringBytePtr(path))), uintptr(unsafe.Sizeof(*buf)), uintptr(unsafe.Pointer(buf)))
errno = int(e1)
return
}
func (r *PtraceRegs) PC() uint64 { return uint64(uint32(r.Eip)) }
func (r *PtraceRegs) SetPC(pc uint64) { r.Eip = int32(pc) }
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