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.
13 func setTimespec(sec, nsec int64) Timespec {
14 return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
17 func setTimeval(sec, usec int64) Timeval {
18 return Timeval{Sec: int32(sec), Usec: int32(usec)}
21 //sysnb pipe(p *[2]_C_int) (err error)
23 func Pipe(p []int) (err error) {
34 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
36 func Pipe2(p []int, flags int) (err error) {
41 err = pipe2(&pp, flags)
47 // 64-bit file system and 32-bit uid calls
48 // (386 default is 32-bit file system and 16-bit uid).
49 //sys dup2(oldfd int, newfd int) (err error)
50 //sysnb EpollCreate(size int) (fd int, err error)
51 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
52 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64_64
53 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32
54 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
55 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
56 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
57 //sysnb Getegid() (egid int) = SYS_GETEGID32
58 //sysnb Geteuid() (euid int) = SYS_GETEUID32
59 //sysnb Getgid() (gid int) = SYS_GETGID32
60 //sysnb Getuid() (uid int) = SYS_GETUID32
61 //sysnb InotifyInit() (fd int, err error)
62 //sys Ioperm(from int, num int, on int) (err error)
63 //sys Iopl(level int) (err error)
64 //sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32
65 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
66 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
67 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
68 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
69 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
70 //sys setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32
71 //sys setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32
72 //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32
73 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32
74 //sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32
75 //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32
76 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
77 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
78 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
79 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
80 //sys Ustat(dev int, ubuf *Ustat_t) (err error)
81 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
82 //sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
83 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
85 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
86 //sys Pause() (err error)
88 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
89 page := uintptr(offset / 4096)
90 if offset != int64(page)*4096 {
93 return mmap2(addr, length, prot, flags, fd, page)
96 type rlimit32 struct {
101 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT
103 const rlimInf32 = ^uint32(0)
104 const rlimInf64 = ^uint64(0)
106 func Getrlimit(resource int, rlim *Rlimit) (err error) {
107 err = prlimit(0, resource, nil, rlim)
113 err = getrlimit(resource, &rl)
118 if rl.Cur == rlimInf32 {
121 rlim.Cur = uint64(rl.Cur)
124 if rl.Max == rlimInf32 {
127 rlim.Max = uint64(rl.Max)
132 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
134 func Setrlimit(resource int, rlim *Rlimit) (err error) {
135 err = prlimit(0, resource, rlim, nil)
141 if rlim.Cur == rlimInf64 {
143 } else if rlim.Cur < uint64(rlimInf32) {
144 rl.Cur = uint32(rlim.Cur)
148 if rlim.Max == rlimInf64 {
150 } else if rlim.Max < uint64(rlimInf32) {
151 rl.Max = uint32(rlim.Max)
156 return setrlimit(resource, &rl)
159 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
160 newoffset, errno := seek(fd, offset, whence)
164 return newoffset, nil
167 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
168 //sysnb Gettimeofday(tv *Timeval) (err error)
169 //sysnb Time(t *Time_t) (tt Time_t, err error)
170 //sys Utime(path string, buf *Utimbuf) (err error)
171 //sys utimes(path string, times *[2]Timeval) (err error)
173 // On x86 Linux, all the socket calls go through an extra indirection,
174 // I think because the 5-register system call interface can't handle
175 // the 6-argument calls like sendto and recvfrom. Instead the
176 // arguments to the underlying system call are the number below
177 // and a pointer to an array of uintptr. We hide the pointer in the
178 // socketcall assembly to avoid allocation on every system call.
204 func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) {
205 fd, e := socketcall(_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
212 func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) {
213 fd, e := socketcall(_ACCEPT4, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags), 0, 0)
220 func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) {
221 _, e := rawsocketcall(_GETSOCKNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
228 func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) {
229 _, e := rawsocketcall(_GETPEERNAME, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), 0, 0, 0)
236 func socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) {
237 _, e := rawsocketcall(_SOCKETPAIR, uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd)), 0, 0)
244 func bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) {
245 _, e := socketcall(_BIND, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
252 func connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) {
253 _, e := socketcall(_CONNECT, uintptr(s), uintptr(addr), uintptr(addrlen), 0, 0, 0)
260 func socket(domain int, typ int, proto int) (fd int, err error) {
261 fd, e := rawsocketcall(_SOCKET, uintptr(domain), uintptr(typ), uintptr(proto), 0, 0, 0)
268 func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
269 _, e := socketcall(_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
276 func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) {
277 _, e := socketcall(_SETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), vallen, 0)
284 func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) {
287 base = uintptr(unsafe.Pointer(&p[0]))
289 n, e := socketcall(_RECVFROM, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen)))
296 func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) {
299 base = uintptr(unsafe.Pointer(&p[0]))
301 _, e := socketcall(_SENDTO, uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen))
308 func recvmsg(s int, msg *Msghdr, flags int) (n int, err error) {
309 n, e := socketcall(_RECVMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
316 func sendmsg(s int, msg *Msghdr, flags int) (n int, err error) {
317 n, e := socketcall(_SENDMSG, uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags), 0, 0, 0)
324 func Listen(s int, n int) (err error) {
325 _, e := socketcall(_LISTEN, uintptr(s), uintptr(n), 0, 0, 0, 0)
332 func Shutdown(s, how int) (err error) {
333 _, e := socketcall(_SHUTDOWN, uintptr(s), uintptr(how), 0, 0, 0, 0)
340 func Fstatfs(fd int, buf *Statfs_t) (err error) {
341 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
348 func Statfs(path string, buf *Statfs_t) (err error) {
349 pathp, err := BytePtrFromString(path)
353 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
360 func (r *PtraceRegs) PC() uint64 { return uint64(uint32(r.Eip)) }
362 func (r *PtraceRegs) SetPC(pc uint64) { r.Eip = int32(pc) }
364 func (iov *Iovec) SetLen(length int) {
365 iov.Len = uint32(length)
368 func (msghdr *Msghdr) SetControllen(length int) {
369 msghdr.Controllen = uint32(length)
372 func (msghdr *Msghdr) SetIovlen(length int) {
373 msghdr.Iovlen = uint32(length)
376 func (cmsg *Cmsghdr) SetLen(length int) {
377 cmsg.Len = uint32(length)
380 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
382 func Poll(fds []PollFd, timeout int) (n int, err error) {
384 return poll(nil, 0, timeout)
386 return poll(&fds[0], len(fds), timeout)