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//go:build arm64 && linux
6// +build arm64,linux
7
8package unix
9
10import "unsafe"
11
12//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
13//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
14//sys Fchown(fd int, uid int, gid int) (err error)
15//sys Fstat(fd int, stat *Stat_t) (err error)
16//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
17//sys Fstatfs(fd int, buf *Statfs_t) (err error)
18//sys Ftruncate(fd int, length int64) (err error)
19//sysnb Getegid() (egid int)
20//sysnb Geteuid() (euid int)
21//sysnb Getgid() (gid int)
22//sysnb getrlimit(resource int, rlim *Rlimit) (err error)
23//sysnb Getuid() (uid int)
24//sys Listen(s int, n int) (err error)
25//sys MemfdSecret(flags int) (fd int, err error)
26//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
27//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
28//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
29//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
30
31func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
32 var ts *Timespec
33 if timeout != nil {
34 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
35 }
36 return Pselect(nfd, r, w, e, ts, nil)
37}
38
39//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
40//sys setfsgid(gid int) (prev int, err error)
41//sys setfsuid(uid int) (prev 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
61func Ustat(dev int, ubuf *Ustat_t) (err error) {
62 return ENOSYS
63}
64
65//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
66//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
67//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
68//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
69//sysnb setgroups(n int, list *_Gid_t) (err error)
70//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
71//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
72//sysnb socket(domain int, typ int, proto int) (fd int, err error)
73//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
74//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
75//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
76//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
77//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
78//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
79//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
80//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
81
82//sysnb Gettimeofday(tv *Timeval) (err error)
83
84func setTimespec(sec, nsec int64) Timespec {
85 return Timespec{Sec: sec, Nsec: nsec}
86}
87
88func setTimeval(sec, usec int64) Timeval {
89 return Timeval{Sec: sec, Usec: usec}
90}
91
92func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
93 if tv == nil {
94 return utimensat(dirfd, path, nil, 0)
95 }
96
97 ts := []Timespec{
98 NsecToTimespec(TimevalToNsec(tv[0])),
99 NsecToTimespec(TimevalToNsec(tv[1])),
100 }
101 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
102}
103
104func Time(t *Time_t) (Time_t, error) {
105 var tv Timeval
106 err := Gettimeofday(&tv)
107 if err != nil {
108 return 0, err
109 }
110 if t != nil {
111 *t = Time_t(tv.Sec)
112 }
113 return Time_t(tv.Sec), nil
114}
115
116func Utime(path string, buf *Utimbuf) error {
117 tv := []Timeval{
118 {Sec: buf.Actime},
119 {Sec: buf.Modtime},
120 }
121 return Utimes(path, tv)
122}
123
124func utimes(path string, tv *[2]Timeval) (err error) {
125 if tv == nil {
126 return utimensat(AT_FDCWD, path, nil, 0)
127 }
128
129 ts := []Timespec{
130 NsecToTimespec(TimevalToNsec(tv[0])),
131 NsecToTimespec(TimevalToNsec(tv[1])),
132 }
133 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
134}
135
136// Getrlimit prefers the prlimit64 system call. See issue 38604.
137func Getrlimit(resource int, rlim *Rlimit) error {
138 err := Prlimit(0, resource, nil, rlim)
139 if err != ENOSYS {
140 return err
141 }
142 return getrlimit(resource, rlim)
143}
144
145func (r *PtraceRegs) PC() uint64 { return r.Pc }
146
147func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }
148
149func (iov *Iovec) SetLen(length int) {
150 iov.Len = uint64(length)
151}
152
153func (msghdr *Msghdr) SetControllen(length int) {
154 msghdr.Controllen = uint64(length)
155}
156
157func (msghdr *Msghdr) SetIovlen(length int) {
158 msghdr.Iovlen = uint64(length)
159}
160
161func (cmsg *Cmsghdr) SetLen(length int) {
162 cmsg.Len = uint64(length)
163}
164
165func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
166 rsa.Service_name_len = uint64(length)
167}
168
169func Pause() error {
170 _, err := ppoll(nil, 0, nil, nil)
171 return err
172}
173
174//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
175
176func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
177 cmdlineLen := len(cmdline)
178 if cmdlineLen > 0 {
179 // Account for the additional NULL byte added by
180 // BytePtrFromString in kexecFileLoad. The kexec_file_load
181 // syscall expects a NULL-terminated string.
182 cmdlineLen++
183 }
184 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
185}