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
7package unix
8
9import "unsafe"
10
11//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
12//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
13//sys Fchown(fd int, uid int, gid int) (err error)
14//sys Fstat(fd int, stat *Stat_t) (err error)
15//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
16//sys Fstatfs(fd int, buf *Statfs_t) (err error)
17//sys Ftruncate(fd int, length int64) (err error)
18//sysnb Getegid() (egid int)
19//sysnb Geteuid() (euid int)
20//sysnb Getgid() (gid int)
21//sysnb getrlimit(resource int, rlim *Rlimit) (err error)
22//sysnb Getuid() (uid int)
23//sys Listen(s int, n int) (err error)
24//sys MemfdSecret(flags int) (fd int, err error)
25//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
26//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
27//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
28//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
29
30func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
31 var ts *Timespec
32 if timeout != nil {
33 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
34 }
35 return pselect6(nfd, r, w, e, ts, nil)
36}
37
38//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
39//sys setfsgid(gid int) (prev int, err error)
40//sys setfsuid(uid int) (prev 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 int64, err error)
43
44func Stat(path string, stat *Stat_t) (err error) {
45 return Fstatat(AT_FDCWD, path, stat, 0)
46}
47
48func Lchown(path string, uid int, gid int) (err error) {
49 return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
50}
51
52func Lstat(path string, stat *Stat_t) (err error) {
53 return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
54}
55
56//sys Statfs(path string, buf *Statfs_t) (err error)
57//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
58//sys Truncate(path string, length int64) (err error)
59
60func Ustat(dev int, ubuf *Ustat_t) (err error) {
61 return ENOSYS
62}
63
64//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
65//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
66//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
67//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
68//sysnb setgroups(n int, list *_Gid_t) (err error)
69//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
70//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
71//sysnb socket(domain int, typ int, proto int) (fd int, err error)
72//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
73//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
74//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
75//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
76//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
77//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
78//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
79//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
80
81//sysnb Gettimeofday(tv *Timeval) (err error)
82
83func setTimespec(sec, nsec int64) Timespec {
84 return Timespec{Sec: sec, Nsec: nsec}
85}
86
87func setTimeval(sec, usec int64) Timeval {
88 return Timeval{Sec: sec, Usec: usec}
89}
90
91func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
92 if tv == nil {
93 return utimensat(dirfd, path, nil, 0)
94 }
95
96 ts := []Timespec{
97 NsecToTimespec(TimevalToNsec(tv[0])),
98 NsecToTimespec(TimevalToNsec(tv[1])),
99 }
100 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
101}
102
103func Time(t *Time_t) (Time_t, error) {
104 var tv Timeval
105 err := Gettimeofday(&tv)
106 if err != nil {
107 return 0, err
108 }
109 if t != nil {
110 *t = Time_t(tv.Sec)
111 }
112 return Time_t(tv.Sec), nil
113}
114
115func Utime(path string, buf *Utimbuf) error {
116 tv := []Timeval{
117 {Sec: buf.Actime},
118 {Sec: buf.Modtime},
119 }
120 return Utimes(path, tv)
121}
122
123func utimes(path string, tv *[2]Timeval) (err error) {
124 if tv == nil {
125 return utimensat(AT_FDCWD, path, nil, 0)
126 }
127
128 ts := []Timespec{
129 NsecToTimespec(TimevalToNsec(tv[0])),
130 NsecToTimespec(TimevalToNsec(tv[1])),
131 }
132 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
133}
134
135// Getrlimit prefers the prlimit64 system call. See issue 38604.
136func Getrlimit(resource int, rlim *Rlimit) error {
137 err := Prlimit(0, resource, nil, rlim)
138 if err != ENOSYS {
139 return err
140 }
141 return getrlimit(resource, rlim)
142}
143
144func (r *PtraceRegs) PC() uint64 { return r.Pc }
145
146func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }
147
148func (iov *Iovec) SetLen(length int) {
149 iov.Len = uint64(length)
150}
151
152func (msghdr *Msghdr) SetControllen(length int) {
153 msghdr.Controllen = uint64(length)
154}
155
156func (msghdr *Msghdr) SetIovlen(length int) {
157 msghdr.Iovlen = uint64(length)
158}
159
160func (cmsg *Cmsghdr) SetLen(length int) {
161 cmsg.Len = uint64(length)
162}
163
164func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
165 rsa.Service_name_len = uint64(length)
166}
167
168func Pause() error {
169 _, err := ppoll(nil, 0, nil, nil)
170 return err
171}
172
173//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
174
175func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
176 cmdlineLen := len(cmdline)
177 if cmdlineLen > 0 {
178 // Account for the additional NULL byte added by
179 // BytePtrFromString in kexecFileLoad. The kexec_file_load
180 // syscall expects a NULL-terminated string.
181 cmdlineLen++
182 }
183 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
184}
185
186const SYS_FSTATAT = SYS_NEWFSTATAT