1// Copyright 2022 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 loong64 && linux
6// +build loong64,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 Fstatfs(fd int, buf *Statfs_t) (err error)
16//sys Ftruncate(fd int, length int64) (err error)
17//sysnb Getegid() (egid int)
18//sysnb Geteuid() (euid int)
19//sysnb Getgid() (gid int)
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) (prev int, err error)
36//sys setfsuid(uid int) (prev int, err error)
37//sys Shutdown(fd int, how int) (err error)
38//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
39
40func timespecFromStatxTimestamp(x StatxTimestamp) Timespec {
41 return Timespec{
42 Sec: x.Sec,
43 Nsec: int64(x.Nsec),
44 }
45}
46
47func Fstatat(fd int, path string, stat *Stat_t, flags int) error {
48 var r Statx_t
49 // Do it the glibc way, add AT_NO_AUTOMOUNT.
50 if err := Statx(fd, path, AT_NO_AUTOMOUNT|flags, STATX_BASIC_STATS, &r); err != nil {
51 return err
52 }
53
54 stat.Dev = Mkdev(r.Dev_major, r.Dev_minor)
55 stat.Ino = r.Ino
56 stat.Mode = uint32(r.Mode)
57 stat.Nlink = r.Nlink
58 stat.Uid = r.Uid
59 stat.Gid = r.Gid
60 stat.Rdev = Mkdev(r.Rdev_major, r.Rdev_minor)
61 // hope we don't get to process files so large to overflow these size
62 // fields...
63 stat.Size = int64(r.Size)
64 stat.Blksize = int32(r.Blksize)
65 stat.Blocks = int64(r.Blocks)
66 stat.Atim = timespecFromStatxTimestamp(r.Atime)
67 stat.Mtim = timespecFromStatxTimestamp(r.Mtime)
68 stat.Ctim = timespecFromStatxTimestamp(r.Ctime)
69
70 return nil
71}
72
73func Fstat(fd int, stat *Stat_t) (err error) {
74 return Fstatat(fd, "", stat, AT_EMPTY_PATH)
75}
76
77func Stat(path string, stat *Stat_t) (err error) {
78 return Fstatat(AT_FDCWD, path, stat, 0)
79}
80
81func Lchown(path string, uid int, gid int) (err error) {
82 return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
83}
84
85func Lstat(path string, stat *Stat_t) (err error) {
86 return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
87}
88
89//sys Statfs(path string, buf *Statfs_t) (err error)
90//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
91//sys Truncate(path string, length int64) (err error)
92
93func Ustat(dev int, ubuf *Ustat_t) (err error) {
94 return ENOSYS
95}
96
97//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
98//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
99//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
100//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
101//sysnb setgroups(n int, list *_Gid_t) (err error)
102//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
103//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
104//sysnb socket(domain int, typ int, proto int) (fd int, err error)
105//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
106//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
107//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
108//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
109//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
110//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
111//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
112//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
113
114//sysnb Gettimeofday(tv *Timeval) (err error)
115
116func setTimespec(sec, nsec int64) Timespec {
117 return Timespec{Sec: sec, Nsec: nsec}
118}
119
120func setTimeval(sec, usec int64) Timeval {
121 return Timeval{Sec: sec, Usec: usec}
122}
123
124func Getrlimit(resource int, rlim *Rlimit) (err error) {
125 err = Prlimit(0, resource, nil, rlim)
126 return
127}
128
129func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
130 if tv == nil {
131 return utimensat(dirfd, path, nil, 0)
132 }
133
134 ts := []Timespec{
135 NsecToTimespec(TimevalToNsec(tv[0])),
136 NsecToTimespec(TimevalToNsec(tv[1])),
137 }
138 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
139}
140
141func Time(t *Time_t) (Time_t, error) {
142 var tv Timeval
143 err := Gettimeofday(&tv)
144 if err != nil {
145 return 0, err
146 }
147 if t != nil {
148 *t = Time_t(tv.Sec)
149 }
150 return Time_t(tv.Sec), nil
151}
152
153func Utime(path string, buf *Utimbuf) error {
154 tv := []Timeval{
155 {Sec: buf.Actime},
156 {Sec: buf.Modtime},
157 }
158 return Utimes(path, tv)
159}
160
161func utimes(path string, tv *[2]Timeval) (err error) {
162 if tv == nil {
163 return utimensat(AT_FDCWD, path, nil, 0)
164 }
165
166 ts := []Timespec{
167 NsecToTimespec(TimevalToNsec(tv[0])),
168 NsecToTimespec(TimevalToNsec(tv[1])),
169 }
170 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
171}
172
173func (r *PtraceRegs) PC() uint64 { return r.Era }
174
175func (r *PtraceRegs) SetPC(era uint64) { r.Era = era }
176
177func (iov *Iovec) SetLen(length int) {
178 iov.Len = uint64(length)
179}
180
181func (msghdr *Msghdr) SetControllen(length int) {
182 msghdr.Controllen = uint64(length)
183}
184
185func (msghdr *Msghdr) SetIovlen(length int) {
186 msghdr.Iovlen = uint64(length)
187}
188
189func (cmsg *Cmsghdr) SetLen(length int) {
190 cmsg.Len = uint64(length)
191}
192
193func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
194 rsa.Service_name_len = uint64(length)
195}
196
197func Pause() error {
198 _, err := ppoll(nil, 0, nil, nil)
199 return err
200}
201
202func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) {
203 return Renameat2(olddirfd, oldpath, newdirfd, newpath, 0)
204}
205
206//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
207
208func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
209 cmdlineLen := len(cmdline)
210 if cmdlineLen > 0 {
211 // Account for the additional NULL byte added by
212 // BytePtrFromString in kexecFileLoad. The kexec_file_load
213 // syscall expects a NULL-terminated string.
214 cmdlineLen++
215 }
216 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
217}