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// +build linux
6// +build mips mipsle
7
8package unix
9
10import (
11	"syscall"
12	"unsafe"
13)
14
15func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
16
17//sys	Dup2(oldfd int, newfd int) (err error)
18//sysnb	EpollCreate(size int) (fd int, err error)
19//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
20//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
21//sys	Fchown(fd int, uid int, gid int) (err error)
22//sys	Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
23//sysnb	Getegid() (egid int)
24//sysnb	Geteuid() (euid int)
25//sysnb	Getgid() (gid int)
26//sysnb	Getuid() (uid int)
27//sys	Lchown(path string, uid int, gid int) (err error)
28//sys	Listen(s int, n int) (err error)
29//sys	Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
30//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
31//sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
32//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
33//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
34//sys	setfsgid(gid int) (prev int, err error)
35//sys	setfsuid(uid int) (prev int, err error)
36//sysnb	Setregid(rgid int, egid int) (err error)
37//sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
38//sysnb	Setresuid(ruid int, euid int, suid int) (err error)
39//sysnb	Setreuid(ruid int, euid int) (err error)
40//sys	Shutdown(fd int, how int) (err error)
41//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
42//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
43//sys	Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
44//sys	Ustat(dev int, ubuf *Ustat_t) (err error)
45//sys	accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
46//sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
47//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
48//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
49//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
50//sysnb	setgroups(n int, list *_Gid_t) (err error)
51//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
52//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
53//sysnb	socket(domain int, typ int, proto int) (fd int, err error)
54//sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
55//sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
56//sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
57//sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
58//sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
59//sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
60//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
61
62//sysnb	InotifyInit() (fd int, err error)
63//sys	Ioperm(from int, num int, on int) (err error)
64//sys	Iopl(level int) (err error)
65
66//sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)
67//sysnb	Gettimeofday(tv *Timeval) (err error)
68//sysnb	Time(t *Time_t) (tt Time_t, err error)
69//sys	Utime(path string, buf *Utimbuf) (err error)
70//sys	utimes(path string, times *[2]Timeval) (err error)
71
72//sys	Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
73//sys	Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
74//sys	Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
75//sys	Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
76
77//sys	Pause() (err error)
78
79func Fstatfs(fd int, buf *Statfs_t) (err error) {
80	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
81	if e != 0 {
82		err = errnoErr(e)
83	}
84	return
85}
86
87func Statfs(path string, buf *Statfs_t) (err error) {
88	p, err := BytePtrFromString(path)
89	if err != nil {
90		return err
91	}
92	_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(p)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
93	if e != 0 {
94		err = errnoErr(e)
95	}
96	return
97}
98
99func Seek(fd int, offset int64, whence int) (off int64, err error) {
100	_, _, e := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offset>>32), uintptr(offset), uintptr(unsafe.Pointer(&off)), uintptr(whence), 0)
101	if e != 0 {
102		err = errnoErr(e)
103	}
104	return
105}
106
107func setTimespec(sec, nsec int64) Timespec {
108	return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
109}
110
111func setTimeval(sec, usec int64) Timeval {
112	return Timeval{Sec: int32(sec), Usec: int32(usec)}
113}
114
115//sysnb pipe2(p *[2]_C_int, flags int) (err error)
116
117func Pipe2(p []int, flags int) (err error) {
118	if len(p) != 2 {
119		return EINVAL
120	}
121	var pp [2]_C_int
122	err = pipe2(&pp, flags)
123	p[0] = int(pp[0])
124	p[1] = int(pp[1])
125	return
126}
127
128//sysnb pipe() (p1 int, p2 int, err error)
129
130func Pipe(p []int) (err error) {
131	if len(p) != 2 {
132		return EINVAL
133	}
134	p[0], p[1], err = pipe()
135	return
136}
137
138//sys	mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
139
140func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
141	page := uintptr(offset / 4096)
142	if offset != int64(page)*4096 {
143		return 0, EINVAL
144	}
145	return mmap2(addr, length, prot, flags, fd, page)
146}
147
148const rlimInf32 = ^uint32(0)
149const rlimInf64 = ^uint64(0)
150
151type rlimit32 struct {
152	Cur uint32
153	Max uint32
154}
155
156//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT
157
158func Getrlimit(resource int, rlim *Rlimit) (err error) {
159	err = prlimit(0, resource, nil, rlim)
160	if err != ENOSYS {
161		return err
162	}
163
164	rl := rlimit32{}
165	err = getrlimit(resource, &rl)
166	if err != nil {
167		return
168	}
169
170	if rl.Cur == rlimInf32 {
171		rlim.Cur = rlimInf64
172	} else {
173		rlim.Cur = uint64(rl.Cur)
174	}
175
176	if rl.Max == rlimInf32 {
177		rlim.Max = rlimInf64
178	} else {
179		rlim.Max = uint64(rl.Max)
180	}
181	return
182}
183
184//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
185
186func Setrlimit(resource int, rlim *Rlimit) (err error) {
187	err = prlimit(0, resource, rlim, nil)
188	if err != ENOSYS {
189		return err
190	}
191
192	rl := rlimit32{}
193	if rlim.Cur == rlimInf64 {
194		rl.Cur = rlimInf32
195	} else if rlim.Cur < uint64(rlimInf32) {
196		rl.Cur = uint32(rlim.Cur)
197	} else {
198		return EINVAL
199	}
200	if rlim.Max == rlimInf64 {
201		rl.Max = rlimInf32
202	} else if rlim.Max < uint64(rlimInf32) {
203		rl.Max = uint32(rlim.Max)
204	} else {
205		return EINVAL
206	}
207
208	return setrlimit(resource, &rl)
209}
210
211func (r *PtraceRegs) PC() uint64 { return r.Epc }
212
213func (r *PtraceRegs) SetPC(pc uint64) { r.Epc = pc }
214
215func (iov *Iovec) SetLen(length int) {
216	iov.Len = uint32(length)
217}
218
219func (msghdr *Msghdr) SetControllen(length int) {
220	msghdr.Controllen = uint32(length)
221}
222
223func (msghdr *Msghdr) SetIovlen(length int) {
224	msghdr.Iovlen = uint32(length)
225}
226
227func (cmsg *Cmsghdr) SetLen(length int) {
228	cmsg.Len = uint32(length)
229}
230
231//sys	poll(fds *PollFd, nfds int, timeout int) (n int, err error)
232
233func Poll(fds []PollFd, timeout int) (n int, err error) {
234	if len(fds) == 0 {
235		return poll(nil, 0, timeout)
236	}
237	return poll(&fds[0], len(fds), timeout)
238}
239