github.com/twelsh-aw/go/src@v0.0.0-20230516233729-a56fe86a7c81/syscall/syscall_linux_loong64.go (about) 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 package syscall 6 7 import "unsafe" 8 9 const ( 10 _SYS_setgroups = SYS_SETGROUPS 11 _SYS_clone3 = 435 12 _SYS_faccessat2 = 439 13 ) 14 15 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT 16 //sys Fchown(fd int, uid int, gid 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 Getuid() (uid int) 23 //sys Listen(s int, n int) (err error) 24 //sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 25 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 26 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) = SYS_RENAMEAT2 27 //sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK 28 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) 29 //sys Setfsgid(gid int) (err error) 30 //sys Setfsuid(uid int) (err error) 31 //sys Shutdown(fd int, how int) (err error) 32 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) 33 //sys statx(dirfd int, path string, flags int, mask int, stat *statx_t) (err error) 34 35 // makedev makes C dev_t from major and minor numbers the glibc way: 36 // 0xMMMM_MMMM 0xmmmm_mmmm -> 0xMMMM_Mmmm_mmmM_MMmm 37 func makedev(major uint32, minor uint32) uint64 { 38 majorH := uint64(major >> 12) 39 majorL := uint64(major & 0xfff) 40 minorH := uint64(minor >> 8) 41 minorL := uint64(minor & 0xff) 42 return (majorH << 44) | (minorH << 20) | (majorL << 8) | minorL 43 } 44 45 func timespecFromStatxTimestamp(x statxTimestamp) Timespec { 46 return Timespec{ 47 Sec: x.Sec, 48 Nsec: int64(x.Nsec), 49 } 50 } 51 52 func fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) { 53 var r statx_t 54 // Do it the glibc way, add AT_NO_AUTOMOUNT. 55 if err = statx(dirfd, path, _AT_NO_AUTOMOUNT|flags, _STATX_BASIC_STATS, &r); err != nil { 56 return err 57 } 58 59 stat.Dev = makedev(r.Dev_major, r.Dev_minor) 60 stat.Ino = r.Ino 61 stat.Mode = uint32(r.Mode) 62 stat.Nlink = r.Nlink 63 stat.Uid = r.Uid 64 stat.Gid = r.Gid 65 stat.Rdev = makedev(r.Rdev_major, r.Rdev_minor) 66 // hope we don't get to process files so large to overflow these size 67 // fields... 68 stat.Size = int64(r.Size) 69 stat.Blksize = int32(r.Blksize) 70 stat.Blocks = int64(r.Blocks) 71 stat.Atim = timespecFromStatxTimestamp(r.Atime) 72 stat.Mtim = timespecFromStatxTimestamp(r.Mtime) 73 stat.Ctim = timespecFromStatxTimestamp(r.Ctime) 74 75 return nil 76 } 77 78 func Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) { 79 return fstatat(fd, path, stat, flags) 80 } 81 82 func Fstat(fd int, stat *Stat_t) (err error) { 83 return fstatat(fd, "", stat, _AT_EMPTY_PATH) 84 } 85 86 func Stat(path string, stat *Stat_t) (err error) { 87 return fstatat(_AT_FDCWD, path, stat, 0) 88 } 89 90 func Lchown(path string, uid int, gid int) (err error) { 91 return Fchownat(_AT_FDCWD, path, uid, gid, _AT_SYMLINK_NOFOLLOW) 92 } 93 94 func Lstat(path string, stat *Stat_t) (err error) { 95 return fstatat(_AT_FDCWD, path, stat, _AT_SYMLINK_NOFOLLOW) 96 } 97 98 //sys Statfs(path string, buf *Statfs_t) (err error) 99 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) 100 //sys Truncate(path string, length int64) (err error) 101 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 102 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 103 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 104 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 105 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 106 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 107 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 108 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) 109 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 110 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 111 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 112 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 113 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 114 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 115 //sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) 116 117 type sigset_t struct { 118 X__val [16]uint64 119 } 120 121 //sys pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *sigset_t) (n int, err error) = SYS_PSELECT6 122 123 func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) { 124 var ts *Timespec 125 if timeout != nil { 126 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000} 127 } 128 return pselect(nfd, r, w, e, ts, nil) 129 } 130 131 //sysnb Gettimeofday(tv *Timeval) (err error) 132 133 func setTimespec(sec, nsec int64) Timespec { 134 return Timespec{Sec: sec, Nsec: nsec} 135 } 136 137 func setTimeval(sec, usec int64) Timeval { 138 return Timeval{Sec: sec, Usec: usec} 139 } 140 141 func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) { 142 if tv == nil { 143 return utimensat(dirfd, path, nil, 0) 144 } 145 146 ts := []Timespec{ 147 NsecToTimespec(TimevalToNsec(tv[0])), 148 NsecToTimespec(TimevalToNsec(tv[1])), 149 } 150 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 151 } 152 153 func Time(t *Time_t) (Time_t, error) { 154 var tv Timeval 155 err := Gettimeofday(&tv) 156 if err != nil { 157 return 0, err 158 } 159 if t != nil { 160 *t = Time_t(tv.Sec) 161 } 162 return Time_t(tv.Sec), nil 163 } 164 165 func Utime(path string, buf *Utimbuf) error { 166 tv := []Timeval{ 167 {Sec: buf.Actime}, 168 {Sec: buf.Modtime}, 169 } 170 return Utimes(path, tv) 171 } 172 173 func utimes(path string, tv *[2]Timeval) (err error) { 174 if tv == nil { 175 return utimensat(_AT_FDCWD, path, nil, 0) 176 } 177 178 ts := []Timespec{ 179 NsecToTimespec(TimevalToNsec(tv[0])), 180 NsecToTimespec(TimevalToNsec(tv[1])), 181 } 182 return utimensat(_AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 183 } 184 185 // Getrlimit prefers the prlimit64 system call. 186 func Getrlimit(resource int, rlim *Rlimit) error { 187 return prlimit(0, resource, nil, rlim) 188 } 189 190 // setrlimit prefers the prlimit64 system call. 191 func setrlimit(resource int, rlim *Rlimit) error { 192 return prlimit(0, resource, rlim, nil) 193 } 194 195 //go:nosplit 196 func rawSetrlimit(resource int, rlim *Rlimit) Errno { 197 _, _, errno := RawSyscall6(SYS_PRLIMIT64, 0, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0, 0, 0) 198 return errno 199 } 200 201 func (r *PtraceRegs) GetEra() uint64 { return r.Era } 202 203 func (r *PtraceRegs) SetEra(era uint64) { r.Era = era } 204 205 func (iov *Iovec) SetLen(length int) { 206 iov.Len = uint64(length) 207 } 208 209 func (msghdr *Msghdr) SetControllen(length int) { 210 msghdr.Controllen = uint64(length) 211 } 212 213 func (cmsg *Cmsghdr) SetLen(length int) { 214 cmsg.Len = uint64(length) 215 } 216 217 func InotifyInit() (fd int, err error) { 218 return InotifyInit1(0) 219 } 220 221 //sys ppoll(fds *pollFd, nfds int, timeout *Timespec, sigmask *sigset_t) (n int, err error) 222 223 func Pause() error { 224 _, err := ppoll(nil, 0, nil, nil) 225 return err 226 }