1// Copyright 2018 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 riscv64 && linux 6// +build riscv64,linux 7 8package unix 9 10import "unsafe" 11 12func EpollCreate(size int) (fd int, err error) { 13 if size <= 0 { 14 return -1, EINVAL 15 } 16 return EpollCreate1(0) 17} 18 19//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT 20//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64 21//sys Fchown(fd int, uid int, gid int) (err error) 22//sys Fstat(fd int, stat *Stat_t) (err error) 23//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 24//sys Fstatfs(fd int, buf *Statfs_t) (err error) 25//sys Ftruncate(fd int, length int64) (err error) 26//sysnb Getegid() (egid int) 27//sysnb Geteuid() (euid int) 28//sysnb Getgid() (gid int) 29//sysnb Getrlimit(resource int, rlim *Rlimit) (err error) 30//sysnb Getuid() (uid int) 31//sys Listen(s int, n int) (err error) 32//sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 33//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 34//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK 35 36func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) { 37 var ts *Timespec 38 if timeout != nil { 39 ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000} 40 } 41 return Pselect(nfd, r, w, e, ts, nil) 42} 43 44//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) 45//sys setfsgid(gid int) (prev int, err error) 46//sys setfsuid(uid int) (prev int, err error) 47//sysnb Setregid(rgid int, egid int) (err error) 48//sysnb Setresgid(rgid int, egid int, sgid int) (err error) 49//sysnb Setresuid(ruid int, euid int, suid int) (err error) 50//sysnb Setrlimit(resource int, rlim *Rlimit) (err error) 51//sysnb Setreuid(ruid int, euid int) (err error) 52//sys Shutdown(fd int, how int) (err error) 53//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) 54 55func Stat(path string, stat *Stat_t) (err error) { 56 return Fstatat(AT_FDCWD, path, stat, 0) 57} 58 59func Lchown(path string, uid int, gid int) (err error) { 60 return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW) 61} 62 63func Lstat(path string, stat *Stat_t) (err error) { 64 return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW) 65} 66 67//sys Statfs(path string, buf *Statfs_t) (err error) 68//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) 69//sys Truncate(path string, length int64) (err error) 70 71func Ustat(dev int, ubuf *Ustat_t) (err error) { 72 return ENOSYS 73} 74 75//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) 76//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 77//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 78//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 79//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 80//sysnb setgroups(n int, list *_Gid_t) (err error) 81//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 82//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 83//sysnb socket(domain int, typ int, proto int) (fd int, err error) 84//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) 85//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 86//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 87//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 88//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 89//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 90//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 91//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) 92 93//sysnb Gettimeofday(tv *Timeval) (err error) 94 95func setTimespec(sec, nsec int64) Timespec { 96 return Timespec{Sec: sec, Nsec: nsec} 97} 98 99func setTimeval(sec, usec int64) Timeval { 100 return Timeval{Sec: sec, Usec: usec} 101} 102 103func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) { 104 if tv == nil { 105 return utimensat(dirfd, path, nil, 0) 106 } 107 108 ts := []Timespec{ 109 NsecToTimespec(TimevalToNsec(tv[0])), 110 NsecToTimespec(TimevalToNsec(tv[1])), 111 } 112 return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 113} 114 115func Time(t *Time_t) (Time_t, error) { 116 var tv Timeval 117 err := Gettimeofday(&tv) 118 if err != nil { 119 return 0, err 120 } 121 if t != nil { 122 *t = Time_t(tv.Sec) 123 } 124 return Time_t(tv.Sec), nil 125} 126 127func Utime(path string, buf *Utimbuf) error { 128 tv := []Timeval{ 129 {Sec: buf.Actime}, 130 {Sec: buf.Modtime}, 131 } 132 return Utimes(path, tv) 133} 134 135func utimes(path string, tv *[2]Timeval) (err error) { 136 if tv == nil { 137 return utimensat(AT_FDCWD, path, nil, 0) 138 } 139 140 ts := []Timespec{ 141 NsecToTimespec(TimevalToNsec(tv[0])), 142 NsecToTimespec(TimevalToNsec(tv[1])), 143 } 144 return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) 145} 146 147func Pipe(p []int) (err error) { 148 if len(p) != 2 { 149 return EINVAL 150 } 151 var pp [2]_C_int 152 err = pipe2(&pp, 0) 153 p[0] = int(pp[0]) 154 p[1] = int(pp[1]) 155 return 156} 157 158//sysnb pipe2(p *[2]_C_int, flags int) (err error) 159 160func Pipe2(p []int, flags int) (err error) { 161 if len(p) != 2 { 162 return EINVAL 163 } 164 var pp [2]_C_int 165 err = pipe2(&pp, flags) 166 p[0] = int(pp[0]) 167 p[1] = int(pp[1]) 168 return 169} 170 171func (r *PtraceRegs) PC() uint64 { return r.Pc } 172 173func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc } 174 175func (iov *Iovec) SetLen(length int) { 176 iov.Len = uint64(length) 177} 178 179func (msghdr *Msghdr) SetControllen(length int) { 180 msghdr.Controllen = uint64(length) 181} 182 183func (msghdr *Msghdr) SetIovlen(length int) { 184 msghdr.Iovlen = uint64(length) 185} 186 187func (cmsg *Cmsghdr) SetLen(length int) { 188 cmsg.Len = uint64(length) 189} 190 191func InotifyInit() (fd int, err error) { 192 return InotifyInit1(0) 193} 194 195func Pause() error { 196 _, err := ppoll(nil, 0, nil, nil) 197 return err 198} 199 200func Poll(fds []PollFd, timeout int) (n int, err error) { 201 var ts *Timespec 202 if timeout >= 0 { 203 ts = new(Timespec) 204 *ts = NsecToTimespec(int64(timeout) * 1e6) 205 } 206 if len(fds) == 0 { 207 return ppoll(nil, 0, ts, nil) 208 } 209 return ppoll(&fds[0], len(fds), ts, nil) 210} 211 212func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) { 213 return Renameat2(olddirfd, oldpath, newdirfd, newpath, 0) 214} 215 216//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) 217 218func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { 219 cmdlineLen := len(cmdline) 220 if cmdlineLen > 0 { 221 // Account for the additional NULL byte added by 222 // BytePtrFromString in kexecFileLoad. The kexec_file_load 223 // syscall expects a NULL-terminated string. 224 cmdlineLen++ 225 } 226 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) 227} 228 229// dup2 exists because func Dup3 in syscall_linux.go references 230// it in an unreachable path. dup2 isn't available on arm64. 231func dup2(oldfd int, newfd int) error 232