1// Copyright 2016 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 linux && (mips || mipsle)
  6// +build linux
  7// +build mips mipsle
  8
  9package unix
 10
 11import (
 12	"syscall"
 13	"unsafe"
 14)
 15
 16func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
 17
 18//sys	dup2(oldfd int, newfd int) (err error)
 19//sysnb	EpollCreate(size int) (fd int, err error)
 20//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
 21//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
 22//sys	Fchown(fd int, uid int, gid int) (err error)
 23//sys	Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
 24//sysnb	Getegid() (egid int)
 25//sysnb	Geteuid() (euid int)
 26//sysnb	Getgid() (gid int)
 27//sysnb	Getuid() (uid int)
 28//sys	Lchown(path string, uid int, gid int) (err error)
 29//sys	Listen(s int, n int) (err error)
 30//sys	Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
 31//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
 32//sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
 33//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
 34//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
 35//sys	setfsgid(gid int) (prev int, err error)
 36//sys	setfsuid(uid int) (prev int, err error)
 37//sysnb	Setregid(rgid int, egid int) (err error)
 38//sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
 39//sysnb	Setresuid(ruid int, euid int, suid int) (err error)
 40//sysnb	Setreuid(ruid int, euid int) (err error)
 41//sys	Shutdown(fd int, how int) (err error)
 42//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
 43//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
 44//sys	Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
 45//sys	Ustat(dev int, ubuf *Ustat_t) (err error)
 46//sys	accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
 47//sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
 48//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
 49//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
 50//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
 51//sysnb	setgroups(n int, list *_Gid_t) (err error)
 52//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
 53//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
 54//sysnb	socket(domain int, typ int, proto int) (fd int, err error)
 55//sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
 56//sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
 57//sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
 58//sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
 59//sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
 60//sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
 61//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
 62
 63//sysnb	InotifyInit() (fd int, err error)
 64//sys	Ioperm(from int, num int, on int) (err error)
 65//sys	Iopl(level int) (err error)
 66
 67//sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)
 68//sysnb	Gettimeofday(tv *Timeval) (err error)
 69//sysnb	Time(t *Time_t) (tt Time_t, err error)
 70//sys	Utime(path string, buf *Utimbuf) (err error)
 71//sys	utimes(path string, times *[2]Timeval) (err error)
 72
 73//sys	Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
 74//sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
 75//sys	Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
 76//sys	Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
 77
 78//sys	Pause() (err error)
 79
 80func Fstatfs(fd int, buf *Statfs_t) (err error) {
 81	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
 82	if e != 0 {
 83		err = errnoErr(e)
 84	}
 85	return
 86}
 87
 88func Statfs(path string, buf *Statfs_t) (err error) {
 89	p, err := BytePtrFromString(path)
 90	if err != nil {
 91		return err
 92	}
 93	_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(p)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
 94	if e != 0 {
 95		err = errnoErr(e)
 96	}
 97	return
 98}
 99
100func Seek(fd int, offset int64, whence int) (off int64, err error) {
101	_, _, e := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offset>>32), uintptr(offset), uintptr(unsafe.Pointer(&off)), uintptr(whence), 0)
102	if e != 0 {
103		err = errnoErr(e)
104	}
105	return
106}
107
108func setTimespec(sec, nsec int64) Timespec {
109	return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
110}
111
112func setTimeval(sec, usec int64) Timeval {
113	return Timeval{Sec: int32(sec), Usec: int32(usec)}
114}
115
116//sysnb	pipe2(p *[2]_C_int, flags int) (err error)
117
118func Pipe2(p []int, flags int) (err error) {
119	if len(p) != 2 {
120		return EINVAL
121	}
122	var pp [2]_C_int
123	err = pipe2(&pp, flags)
124	p[0] = int(pp[0])
125	p[1] = int(pp[1])
126	return
127}
128
129//sysnb	pipe() (p1 int, p2 int, err error)
130
131func Pipe(p []int) (err error) {
132	if len(p) != 2 {
133		return EINVAL
134	}
135	p[0], p[1], err = pipe()
136	return
137}
138
139//sys	mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
140
141func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
142	page := uintptr(offset / 4096)
143	if offset != int64(page)*4096 {
144		return 0, EINVAL
145	}
146	return mmap2(addr, length, prot, flags, fd, page)
147}
148
149const rlimInf32 = ^uint32(0)
150const rlimInf64 = ^uint64(0)
151
152type rlimit32 struct {
153	Cur uint32
154	Max uint32
155}
156
157//sysnb	getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT
158
159func Getrlimit(resource int, rlim *Rlimit) (err error) {
160	err = prlimit(0, resource, nil, rlim)
161	if err != ENOSYS {
162		return err
163	}
164
165	rl := rlimit32{}
166	err = getrlimit(resource, &rl)
167	if err != nil {
168		return
169	}
170
171	if rl.Cur == rlimInf32 {
172		rlim.Cur = rlimInf64
173	} else {
174		rlim.Cur = uint64(rl.Cur)
175	}
176
177	if rl.Max == rlimInf32 {
178		rlim.Max = rlimInf64
179	} else {
180		rlim.Max = uint64(rl.Max)
181	}
182	return
183}
184
185//sysnb	setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
186
187func Setrlimit(resource int, rlim *Rlimit) (err error) {
188	err = prlimit(0, resource, rlim, nil)
189	if err != ENOSYS {
190		return err
191	}
192
193	rl := rlimit32{}
194	if rlim.Cur == rlimInf64 {
195		rl.Cur = rlimInf32
196	} else if rlim.Cur < uint64(rlimInf32) {
197		rl.Cur = uint32(rlim.Cur)
198	} else {
199		return EINVAL
200	}
201	if rlim.Max == rlimInf64 {
202		rl.Max = rlimInf32
203	} else if rlim.Max < uint64(rlimInf32) {
204		rl.Max = uint32(rlim.Max)
205	} else {
206		return EINVAL
207	}
208
209	return setrlimit(resource, &rl)
210}
211
212func (r *PtraceRegs) PC() uint64 { return r.Epc }
213
214func (r *PtraceRegs) SetPC(pc uint64) { r.Epc = pc }
215
216func (iov *Iovec) SetLen(length int) {
217	iov.Len = uint32(length)
218}
219
220func (msghdr *Msghdr) SetControllen(length int) {
221	msghdr.Controllen = uint32(length)
222}
223
224func (msghdr *Msghdr) SetIovlen(length int) {
225	msghdr.Iovlen = uint32(length)
226}
227
228func (cmsg *Cmsghdr) SetLen(length int) {
229	cmsg.Len = uint32(length)
230}
231
232//sys	poll(fds *PollFd, nfds int, timeout int) (n int, err error)
233
234func Poll(fds []PollFd, timeout int) (n int, err error) {
235	if len(fds) == 0 {
236		return poll(nil, 0, timeout)
237	}
238	return poll(&fds[0], len(fds), timeout)
239}