David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame] | 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 | |
| 7 | package unix |
| 8 | |
| 9 | //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT |
| 10 | //sys Fchown(fd int, uid int, gid int) (err error) |
| 11 | //sys Fstat(fd int, stat *Stat_t) (err error) |
| 12 | //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) |
| 13 | //sys Fstatfs(fd int, buf *Statfs_t) (err error) |
| 14 | //sys Ftruncate(fd int, length int64) (err error) |
| 15 | //sysnb Getegid() (egid int) |
| 16 | //sysnb Geteuid() (euid int) |
| 17 | //sysnb Getgid() (gid int) |
| 18 | //sysnb Getrlimit(resource int, rlim *Rlimit) (err error) |
| 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 | //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS_PSELECT6 |
| 25 | //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) |
| 26 | //sys Setfsgid(gid int) (err error) |
| 27 | //sys Setfsuid(uid int) (err error) |
| 28 | //sysnb Setregid(rgid int, egid int) (err error) |
| 29 | //sysnb Setresgid(rgid int, egid int, sgid int) (err error) |
| 30 | //sysnb Setresuid(ruid int, euid int, suid int) (err error) |
| 31 | //sysnb Setrlimit(resource int, rlim *Rlimit) (err error) |
| 32 | //sysnb Setreuid(ruid int, euid int) (err error) |
| 33 | //sys Shutdown(fd int, how int) (err error) |
| 34 | //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) |
| 35 | |
| 36 | func Stat(path string, stat *Stat_t) (err error) { |
| 37 | return Fstatat(AT_FDCWD, path, stat, 0) |
| 38 | } |
| 39 | |
| 40 | func Lchown(path string, uid int, gid int) (err error) { |
| 41 | return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW) |
| 42 | } |
| 43 | |
| 44 | func Lstat(path string, stat *Stat_t) (err error) { |
| 45 | return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW) |
| 46 | } |
| 47 | |
| 48 | //sys Statfs(path string, buf *Statfs_t) (err error) |
| 49 | //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) |
| 50 | //sys Truncate(path string, length int64) (err error) |
| 51 | //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) |
| 52 | //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) |
| 53 | //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
| 54 | //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) |
| 55 | //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) |
| 56 | //sysnb setgroups(n int, list *_Gid_t) (err error) |
| 57 | //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) |
| 58 | //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) |
| 59 | //sysnb socket(domain int, typ int, proto int) (fd int, err error) |
| 60 | //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) |
| 61 | //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
| 62 | //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) |
| 63 | //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) |
| 64 | //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) |
| 65 | //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) |
| 66 | //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) |
| 67 | //sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) |
| 68 | |
| 69 | func Getpagesize() int { return 65536 } |
| 70 | |
| 71 | //sysnb Gettimeofday(tv *Timeval) (err error) |
| 72 | |
| 73 | func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } |
| 74 | |
| 75 | func NsecToTimespec(nsec int64) (ts Timespec) { |
| 76 | ts.Sec = nsec / 1e9 |
| 77 | ts.Nsec = nsec % 1e9 |
| 78 | return |
| 79 | } |
| 80 | |
| 81 | func NsecToTimeval(nsec int64) (tv Timeval) { |
| 82 | nsec += 999 // round up to microsecond |
| 83 | tv.Sec = nsec / 1e9 |
| 84 | tv.Usec = nsec % 1e9 / 1e3 |
| 85 | return |
| 86 | } |
| 87 | |
| 88 | func Time(t *Time_t) (Time_t, error) { |
| 89 | var tv Timeval |
| 90 | err := Gettimeofday(&tv) |
| 91 | if err != nil { |
| 92 | return 0, err |
| 93 | } |
| 94 | if t != nil { |
| 95 | *t = Time_t(tv.Sec) |
| 96 | } |
| 97 | return Time_t(tv.Sec), nil |
| 98 | } |
| 99 | |
| 100 | func Utime(path string, buf *Utimbuf) error { |
| 101 | tv := []Timeval{ |
| 102 | {Sec: buf.Actime}, |
| 103 | {Sec: buf.Modtime}, |
| 104 | } |
| 105 | return Utimes(path, tv) |
| 106 | } |
| 107 | |
| 108 | func Pipe(p []int) (err error) { |
| 109 | if len(p) != 2 { |
| 110 | return EINVAL |
| 111 | } |
| 112 | var pp [2]_C_int |
| 113 | err = pipe2(&pp, 0) |
| 114 | p[0] = int(pp[0]) |
| 115 | p[1] = int(pp[1]) |
| 116 | return |
| 117 | } |
| 118 | |
| 119 | //sysnb pipe2(p *[2]_C_int, flags int) (err error) |
| 120 | |
| 121 | func Pipe2(p []int, flags int) (err error) { |
| 122 | if len(p) != 2 { |
| 123 | return EINVAL |
| 124 | } |
| 125 | var pp [2]_C_int |
| 126 | err = pipe2(&pp, flags) |
| 127 | p[0] = int(pp[0]) |
| 128 | p[1] = int(pp[1]) |
| 129 | return |
| 130 | } |
| 131 | |
| 132 | func (r *PtraceRegs) PC() uint64 { return r.Pc } |
| 133 | |
| 134 | func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc } |
| 135 | |
| 136 | func (iov *Iovec) SetLen(length int) { |
| 137 | iov.Len = uint64(length) |
| 138 | } |
| 139 | |
| 140 | func (msghdr *Msghdr) SetControllen(length int) { |
| 141 | msghdr.Controllen = uint64(length) |
| 142 | } |
| 143 | |
| 144 | func (cmsg *Cmsghdr) SetLen(length int) { |
| 145 | cmsg.Len = uint64(length) |
| 146 | } |
| 147 | |
| 148 | func InotifyInit() (fd int, err error) { |
| 149 | return InotifyInit1(0) |
| 150 | } |
| 151 | |
| 152 | func Dup2(oldfd int, newfd int) (err error) { |
| 153 | return Dup3(oldfd, newfd, 0) |
| 154 | } |
| 155 | |
| 156 | func Pause() (err error) { |
| 157 | _, _, e1 := Syscall6(SYS_PPOLL, 0, 0, 0, 0, 0, 0) |
| 158 | if e1 != 0 { |
| 159 | err = errnoErr(e1) |
| 160 | } |
| 161 | return |
| 162 | } |
| 163 | |
| 164 | // TODO(dfc): constants that should be in zsysnum_linux_arm64.go, remove |
| 165 | // these when the deprecated syscalls that the syscall package relies on |
| 166 | // are removed. |
| 167 | const ( |
| 168 | SYS_GETPGRP = 1060 |
| 169 | SYS_UTIMES = 1037 |
| 170 | SYS_FUTIMESAT = 1066 |
| 171 | SYS_PAUSE = 1061 |
| 172 | SYS_USTAT = 1070 |
| 173 | SYS_UTIME = 1063 |
| 174 | SYS_LCHOWN = 1032 |
| 175 | SYS_TIME = 1062 |
| 176 | SYS_EPOLL_CREATE = 1042 |
| 177 | SYS_EPOLL_WAIT = 1069 |
| 178 | ) |
| 179 | |
| 180 | func Poll(fds []PollFd, timeout int) (n int, err error) { |
| 181 | var ts *Timespec |
| 182 | if timeout >= 0 { |
| 183 | ts = new(Timespec) |
| 184 | *ts = NsecToTimespec(int64(timeout) * 1e6) |
| 185 | } |
| 186 | if len(fds) == 0 { |
| 187 | return ppoll(nil, 0, ts, nil) |
| 188 | } |
| 189 | return ppoll(&fds[0], len(fds), ts, nil) |
| 190 | } |