1// Copyright 2015 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 arm64,linux
6
7package unix
8
9//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
10//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
11//sys	Fchown(fd int, uid int, gid int) (err error)
12//sys	Fstat(fd int, stat *Stat_t) (err error)
13//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
14//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
15//sys	Ftruncate(fd int, length int64) (err error)
16//sysnb	Getegid() (egid int)
17//sysnb	Geteuid() (euid int)
18//sysnb	Getgid() (gid int)
19//sysnb	Getrlimit(resource int, rlim *Rlimit) (err error)
20//sysnb	Getuid() (uid int)
21//sys	Listen(s int, n int) (err error)
22//sys	Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
23//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
24//sys	Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
25
26func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
27	var ts *Timespec
28	if timeout != nil {
29		ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
30	}
31	return Pselect(nfd, r, w, e, ts, nil)
32}
33
34//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
35//sys	Setfsgid(gid int) (err error)
36//sys	Setfsuid(uid 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	Setrlimit(resource int, rlim *Rlimit) (err error)
41//sysnb	Setreuid(ruid int, euid int) (err error)
42//sys	Shutdown(fd int, how int) (err error)
43//sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
44
45func Stat(path string, stat *Stat_t) (err error) {
46	return Fstatat(AT_FDCWD, path, stat, 0)
47}
48
49func Lchown(path string, uid int, gid int) (err error) {
50	return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
51}
52
53func Lstat(path string, stat *Stat_t) (err error) {
54	return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
55}
56
57//sys	Statfs(path string, buf *Statfs_t) (err error)
58//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
59//sys	Truncate(path string, length int64) (err error)
60//sys	accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
61//sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
62//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
63//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
64//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
65//sysnb	setgroups(n int, list *_Gid_t) (err error)
66//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
67//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
68//sysnb	socket(domain int, typ int, proto int) (fd int, err error)
69//sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
70//sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
71//sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
72//sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
73//sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
74//sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
75//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
76//sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
77
78//sysnb	Gettimeofday(tv *Timeval) (err error)
79
80func setTimespec(sec, nsec int64) Timespec {
81	return Timespec{Sec: sec, Nsec: nsec}
82}
83
84func setTimeval(sec, usec int64) Timeval {
85	return Timeval{Sec: sec, Usec: usec}
86}
87
88func Time(t *Time_t) (Time_t, error) {
89	var tv Timeval
90	err := Gettimeofday(&tv)
91	if err != nil {
92		return 0, err
93	}
94	if t != nil {
95		*t = Time_t(tv.Sec)
96	}
97	return Time_t(tv.Sec), nil
98}
99
100func Utime(path string, buf *Utimbuf) error {
101	tv := []Timeval{
102		{Sec: buf.Actime},
103		{Sec: buf.Modtime},
104	}
105	return Utimes(path, tv)
106}
107
108func Pipe(p []int) (err error) {
109	if len(p) != 2 {
110		return EINVAL
111	}
112	var pp [2]_C_int
113	err = pipe2(&pp, 0)
114	p[0] = int(pp[0])
115	p[1] = int(pp[1])
116	return
117}
118
119//sysnb pipe2(p *[2]_C_int, flags int) (err error)
120
121func Pipe2(p []int, flags int) (err error) {
122	if len(p) != 2 {
123		return EINVAL
124	}
125	var pp [2]_C_int
126	err = pipe2(&pp, flags)
127	p[0] = int(pp[0])
128	p[1] = int(pp[1])
129	return
130}
131
132func (r *PtraceRegs) PC() uint64 { return r.Pc }
133
134func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }
135
136func (iov *Iovec) SetLen(length int) {
137	iov.Len = uint64(length)
138}
139
140func (msghdr *Msghdr) SetControllen(length int) {
141	msghdr.Controllen = uint64(length)
142}
143
144func (cmsg *Cmsghdr) SetLen(length int) {
145	cmsg.Len = uint64(length)
146}
147
148func InotifyInit() (fd int, err error) {
149	return InotifyInit1(0)
150}
151
152func Dup2(oldfd int, newfd int) (err error) {
153	return Dup3(oldfd, newfd, 0)
154}
155
156func Pause() (err error) {
157	_, _, e1 := Syscall6(SYS_PPOLL, 0, 0, 0, 0, 0, 0)
158	if e1 != 0 {
159		err = errnoErr(e1)
160	}
161	return
162}
163
164// TODO(dfc): constants that should be in zsysnum_linux_arm64.go, remove
165// these when the deprecated syscalls that the syscall package relies on
166// are removed.
167const (
168	SYS_GETPGRP      = 1060
169	SYS_UTIMES       = 1037
170	SYS_FUTIMESAT    = 1066
171	SYS_PAUSE        = 1061
172	SYS_USTAT        = 1070
173	SYS_UTIME        = 1063
174	SYS_LCHOWN       = 1032
175	SYS_TIME         = 1062
176	SYS_EPOLL_CREATE = 1042
177	SYS_EPOLL_WAIT   = 1069
178)
179
180func Poll(fds []PollFd, timeout int) (n int, err error) {
181	var ts *Timespec
182	if timeout >= 0 {
183		ts = new(Timespec)
184		*ts = NsecToTimespec(int64(timeout) * 1e6)
185	}
186	if len(fds) == 0 {
187		return ppoll(nil, 0, ts, nil)
188	}
189	return ppoll(&fds[0], len(fds), ts, nil)
190}
191