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
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 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 Getuid() (uid int)
20//sys Listen(s int, n int) (err error)
21//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
22//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
23//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
24
25func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
26 var ts *Timespec
27 if timeout != nil {
28 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
29 }
30 return pselect6(nfd, r, w, e, ts, nil)
31}
32
33//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
34//sys setfsgid(gid int) (prev int, err error)
35//sys setfsuid(uid int) (prev int, err error)
36//sys Shutdown(fd int, how int) (err error)
37//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
38
39func timespecFromStatxTimestamp(x StatxTimestamp) Timespec {
40 return Timespec{
41 Sec: x.Sec,
42 Nsec: int64(x.Nsec),
43 }
44}
45
46func Fstatat(fd int, path string, stat *Stat_t, flags int) error {
47 var r Statx_t
48 // Do it the glibc way, add AT_NO_AUTOMOUNT.
49 if err := Statx(fd, path, AT_NO_AUTOMOUNT|flags, STATX_BASIC_STATS, &r); err != nil {
50 return err
51 }
52
53 stat.Dev = Mkdev(r.Dev_major, r.Dev_minor)
54 stat.Ino = r.Ino
55 stat.Mode = uint32(r.Mode)
56 stat.Nlink = r.Nlink
57 stat.Uid = r.Uid
58 stat.Gid = r.Gid
59 stat.Rdev = Mkdev(r.Rdev_major, r.Rdev_minor)
60 // hope we don't get to process files so large to overflow these size
61 // fields...
62 stat.Size = int64(r.Size)
63 stat.Blksize = int32(r.Blksize)
64 stat.Blocks = int64(r.Blocks)
65 stat.Atim = timespecFromStatxTimestamp(r.Atime)
66 stat.Mtim = timespecFromStatxTimestamp(r.Mtime)
67 stat.Ctim = timespecFromStatxTimestamp(r.Ctime)
68
69 return nil
70}
71
72func Fstat(fd int, stat *Stat_t) (err error) {
73 return Fstatat(fd, "", stat, AT_EMPTY_PATH)
74}
75
76func Stat(path string, stat *Stat_t) (err error) {
77 return Fstatat(AT_FDCWD, path, stat, 0)
78}
79
80func Lchown(path string, uid int, gid int) (err error) {
81 return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
82}
83
84func Lstat(path string, stat *Stat_t) (err error) {
85 return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
86}
87
88//sys Statfs(path string, buf *Statfs_t) (err error)
89//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
90//sys Truncate(path string, length int64) (err error)
91
92func Ustat(dev int, ubuf *Ustat_t) (err error) {
93 return ENOSYS
94}
95
96//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
97//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
98//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
99//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
100//sysnb setgroups(n int, list *_Gid_t) (err error)
101//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
102//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
103//sysnb socket(domain int, typ int, proto int) (fd int, err error)
104//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
105//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
106//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
107//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
108//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
109//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
110//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
111//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
112
113//sysnb Gettimeofday(tv *Timeval) (err error)
114
115func setTimespec(sec, nsec int64) Timespec {
116 return Timespec{Sec: sec, Nsec: nsec}
117}
118
119func setTimeval(sec, usec int64) Timeval {
120 return Timeval{Sec: sec, Usec: usec}
121}
122
123func Getrlimit(resource int, rlim *Rlimit) (err error) {
124 err = Prlimit(0, resource, nil, rlim)
125 return
126}
127
128func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
129 if tv == nil {
130 return utimensat(dirfd, path, nil, 0)
131 }
132
133 ts := []Timespec{
134 NsecToTimespec(TimevalToNsec(tv[0])),
135 NsecToTimespec(TimevalToNsec(tv[1])),
136 }
137 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
138}
139
140func Time(t *Time_t) (Time_t, error) {
141 var tv Timeval
142 err := Gettimeofday(&tv)
143 if err != nil {
144 return 0, err
145 }
146 if t != nil {
147 *t = Time_t(tv.Sec)
148 }
149 return Time_t(tv.Sec), nil
150}
151
152func Utime(path string, buf *Utimbuf) error {
153 tv := []Timeval{
154 {Sec: buf.Actime},
155 {Sec: buf.Modtime},
156 }
157 return Utimes(path, tv)
158}
159
160func utimes(path string, tv *[2]Timeval) (err error) {
161 if tv == nil {
162 return utimensat(AT_FDCWD, path, nil, 0)
163 }
164
165 ts := []Timespec{
166 NsecToTimespec(TimevalToNsec(tv[0])),
167 NsecToTimespec(TimevalToNsec(tv[1])),
168 }
169 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
170}
171
172func (r *PtraceRegs) PC() uint64 { return r.Era }
173
174func (r *PtraceRegs) SetPC(era uint64) { r.Era = era }
175
176func (iov *Iovec) SetLen(length int) {
177 iov.Len = uint64(length)
178}
179
180func (msghdr *Msghdr) SetControllen(length int) {
181 msghdr.Controllen = uint64(length)
182}
183
184func (msghdr *Msghdr) SetIovlen(length int) {
185 msghdr.Iovlen = uint64(length)
186}
187
188func (cmsg *Cmsghdr) SetLen(length int) {
189 cmsg.Len = uint64(length)
190}
191
192func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
193 rsa.Service_name_len = uint64(length)
194}
195
196func Pause() error {
197 _, err := ppoll(nil, 0, nil, nil)
198 return err
199}
200
201func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) {
202 return Renameat2(olddirfd, oldpath, newdirfd, newpath, 0)
203}
204
205//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
206
207func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
208 cmdlineLen := len(cmdline)
209 if cmdlineLen > 0 {
210 // Account for the additional NULL byte added by
211 // BytePtrFromString in kexecFileLoad. The kexec_file_load
212 // syscall expects a NULL-terminated string.
213 cmdlineLen++
214 }
215 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
216}
217
218const SYS_FSTATAT = SYS_NEWFSTATAT