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.
4
5package syscall
6
7import (
8	"unsafe"
9)
10
11const (
12	_SYS_setgroups  = SYS_SETGROUPS
13	_SYS_clone3     = 435
14	_SYS_faccessat2 = 439
15	_SYS_fchmodat2  = 452
16)
17
18//sys	Dup2(oldfd int, newfd int) (err error)
19//sys	Fchown(fd int, uid int, gid int) (err error)
20//sys	Fstat(fd int, stat *Stat_t) (err error)
21//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
22//sys	Ftruncate(fd int, length int64) (err error)
23//sysnb	Getegid() (egid int)
24//sysnb	Geteuid() (euid int)
25//sysnb	Getgid() (gid int)
26//sysnb	Getrlimit(resource int, rlim *Rlimit) (err error)
27//sysnb	Getuid() (uid int)
28//sysnb	InotifyInit() (fd int, err error)
29//sys	Ioperm(from int, num int, on int) (err error)
30//sys	Iopl(level int) (err error)
31//sys	Listen(s int, n int) (err error)
32//sys	Pause() (err error)
33//sys	pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
34//sys	pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
35//sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
36//sys	Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
37//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
38//sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
39//sys	Setfsgid(gid int) (err error)
40//sys	Setfsuid(uid int) (err error)
41//sysnb	setrlimit(resource int, rlim *Rlimit) (err error) = SYS_SETRLIMIT
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//sys	Statfs(path string, buf *Statfs_t) (err error)
45//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
46//sys	Truncate(path string, length int64) (err error)
47//sys	Ustat(dev int, ubuf *Ustat_t) (err error)
48//sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
49//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
50//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
51//sys	fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
52//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
53//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
54//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
55//sysnb	socket(domain int, typ int, proto int) (fd int, err error)
56//sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
57//sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
58//sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
59//sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
60//sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
61//sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
62//sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
63//sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
64//sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
65
66func Stat(path string, stat *Stat_t) (err error) {
67	return fstatat(_AT_FDCWD, path, stat, 0)
68}
69
70func Lchown(path string, uid int, gid int) (err error) {
71	return Fchownat(_AT_FDCWD, path, uid, gid, _AT_SYMLINK_NOFOLLOW)
72}
73
74func Lstat(path string, stat *Stat_t) (err error) {
75	return fstatat(_AT_FDCWD, path, stat, _AT_SYMLINK_NOFOLLOW)
76}
77
78//sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)
79
80//go:noescape
81func gettimeofday(tv *Timeval) (err Errno)
82
83func Gettimeofday(tv *Timeval) (err error) {
84	errno := gettimeofday(tv)
85	if errno != 0 {
86		return errno
87	}
88	return nil
89}
90
91func Time(t *Time_t) (tt Time_t, err error) {
92	var tv Timeval
93	errno := gettimeofday(&tv)
94	if errno != 0 {
95		return 0, errno
96	}
97	if t != nil {
98		*t = Time_t(tv.Sec)
99	}
100	return Time_t(tv.Sec), nil
101}
102
103//sys	Utime(path string, buf *Utimbuf) (err error)
104//sys	utimes(path string, times *[2]Timeval) (err error)
105
106//go:nosplit
107func rawSetrlimit(resource int, rlim *Rlimit) Errno {
108	_, _, errno := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
109	return errno
110}
111
112func setTimespec(sec, nsec int64) Timespec {
113	return Timespec{Sec: sec, Nsec: nsec}
114}
115
116func setTimeval(sec, usec int64) Timeval {
117	return Timeval{Sec: sec, Usec: usec}
118}
119
120func (r *PtraceRegs) PC() uint64 { return r.Rip }
121
122func (r *PtraceRegs) SetPC(pc uint64) { r.Rip = pc }
123
124func (iov *Iovec) SetLen(length int) {
125	iov.Len = uint64(length)
126}
127
128func (msghdr *Msghdr) SetControllen(length int) {
129	msghdr.Controllen = uint64(length)
130}
131
132func (cmsg *Cmsghdr) SetLen(length int) {
133	cmsg.Len = uint64(length)
134}
135