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// +build arm64,linux 6 7package unix 8 9import "unsafe" 10 11func EpollCreate(size int) (fd int, err error) { 12 if size <= 0 { 13 return -1, EINVAL 14 } 15 return EpollCreate1(0) 16} 17 18//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT 19//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64 20//sys Fchown(fd int, uid int, gid int) (err error) 21//sys Fstat(fd int, stat *Stat_t) (err error) 22//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 23//sys Fstatfs(fd int, buf *Statfs_t) (err error) 24//sys Ftruncate(fd int, length int64) (err error) 25//sysnb Getegid() (egid int) 26//sysnb Geteuid() (euid int) 27//sysnb Getgid() (gid int) 28//sysnb getrlimit(resource int, rlim *Rlimit) (err error) 29//sysnb Getuid() (uid int) 30//sys Listen(s int, n int) (err error) 31//sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 32//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 33//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 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} 170 171// Getrlimit prefers the prlimit64 system call. See issue 38604. 172func Getrlimit(resource int, rlim *Rlimit) error { 173 err := prlimit(0, resource, nil, rlim) 174 if err != ENOSYS { 175 return err 176 } 177 return getrlimit(resource, rlim) 178} 179 180// Setrlimit prefers the prlimit64 system call. See issue 38604. 181func Setrlimit(resource int, rlim *Rlimit) error { 182 err := prlimit(0, resource, rlim, nil) 183 if err != ENOSYS { 184 return err 185 } 186 return setrlimit(resource, rlim) 187} 188 189func (r *PtraceRegs) PC() uint64 { return r.Pc } 190 191func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc } 192 193func (iov *Iovec) SetLen(length int) { 194 iov.Len = uint64(length) 195} 196 197func (msghdr *Msghdr) SetControllen(length int) { 198 msghdr.Controllen = uint64(length) 199} 200 201func (msghdr *Msghdr) SetIovlen(length int) { 202 msghdr.Iovlen = uint64(length) 203} 204 205func (cmsg *Cmsghdr) SetLen(length int) { 206 cmsg.Len = uint64(length) 207} 208 209func InotifyInit() (fd int, err error) { 210 return InotifyInit1(0) 211} 212 213// dup2 exists because func Dup3 in syscall_linux.go references 214// it in an unreachable path. dup2 isn't available on arm64. 215func dup2(oldfd int, newfd int) error 216 217func Pause() error { 218 _, err := ppoll(nil, 0, nil, nil) 219 return err 220} 221 222func Poll(fds []PollFd, timeout int) (n int, err error) { 223 var ts *Timespec 224 if timeout >= 0 { 225 ts = new(Timespec) 226 *ts = NsecToTimespec(int64(timeout) * 1e6) 227 } 228 if len(fds) == 0 { 229 return ppoll(nil, 0, ts, nil) 230 } 231 return ppoll(&fds[0], len(fds), ts, nil) 232} 233 234//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) 235 236func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { 237 cmdlineLen := len(cmdline) 238 if cmdlineLen > 0 { 239 // Account for the additional NULL byte added by 240 // BytePtrFromString in kexecFileLoad. The kexec_file_load 241 // syscall expects a NULL-terminated string. 242 cmdlineLen++ 243 } 244 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) 245} 246