github.com/dolotech/hongbao@v0.0.0-20191130105438-fd59d7a5dda5/src/golang.org/x/sys/unix/syscall_linux_s390x.go (about) 1 // Copyright 2016 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 s390x,linux 6 7 package unix 8 9 import ( 10 "unsafe" 11 ) 12 13 //sys Dup2(oldfd int, newfd int) (err error) 14 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 15 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64 16 //sys Fchown(fd int, uid int, gid int) (err error) 17 //sys Fstat(fd int, stat *Stat_t) (err error) 18 //sys Fstatfs(fd int, buf *Statfs_t) (err error) 19 //sys Ftruncate(fd int, length int64) (err error) 20 //sysnb Getegid() (egid int) 21 //sysnb Geteuid() (euid int) 22 //sysnb Getgid() (gid int) 23 //sysnb Getrlimit(resource int, rlim *Rlimit) (err error) 24 //sysnb Getuid() (uid int) 25 //sysnb InotifyInit() (fd int, err error) 26 //sys Lchown(path string, uid int, gid int) (err error) 27 //sys Lstat(path string, stat *Stat_t) (err error) 28 //sys Pause() (err error) 29 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 30 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 31 //sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK 32 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) 33 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) 34 //sys Setfsgid(gid int) (err error) 35 //sys Setfsuid(uid int) (err error) 36 //sysnb Setregid(rgid int, egid int) (err error) 37 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) 38 //sysnb Setresuid(ruid int, euid int, suid int) (err error) 39 //sysnb Setrlimit(resource int, rlim *Rlimit) (err error) 40 //sysnb Setreuid(ruid int, euid int) (err error) 41 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) 42 //sys Stat(path string, stat *Stat_t) (err error) 43 //sys Statfs(path string, buf *Statfs_t) (err error) 44 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) 45 //sys Truncate(path string, length int64) (err error) 46 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 47 //sysnb setgroups(n int, list *_Gid_t) (err error) 48 49 //sysnb Gettimeofday(tv *Timeval) (err error) 50 51 func Time(t *Time_t) (tt Time_t, err error) { 52 var tv Timeval 53 err = Gettimeofday(&tv) 54 if err != nil { 55 return 0, err 56 } 57 if t != nil { 58 *t = Time_t(tv.Sec) 59 } 60 return Time_t(tv.Sec), nil 61 } 62 63 //sys Utime(path string, buf *Utimbuf) (err error) 64 65 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 66 67 func NsecToTimespec(nsec int64) (ts Timespec) { 68 ts.Sec = nsec / 1e9 69 ts.Nsec = nsec % 1e9 70 return 71 } 72 73 func NsecToTimeval(nsec int64) (tv Timeval) { 74 nsec += 999 // round up to microsecond 75 tv.Sec = nsec / 1e9 76 tv.Usec = nsec % 1e9 / 1e3 77 return 78 } 79 80 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 81 82 func Pipe(p []int) (err error) { 83 if len(p) != 2 { 84 return EINVAL 85 } 86 var pp [2]_C_int 87 err = pipe2(&pp, 0) // pipe2 is the same as pipe when flags are set to 0. 88 p[0] = int(pp[0]) 89 p[1] = int(pp[1]) 90 return 91 } 92 93 func Pipe2(p []int, flags int) (err error) { 94 if len(p) != 2 { 95 return EINVAL 96 } 97 var pp [2]_C_int 98 err = pipe2(&pp, flags) 99 p[0] = int(pp[0]) 100 p[1] = int(pp[1]) 101 return 102 } 103 104 func Ioperm(from int, num int, on int) (err error) { 105 return ENOSYS 106 } 107 108 func Iopl(level int) (err error) { 109 return ENOSYS 110 } 111 112 func (r *PtraceRegs) PC() uint64 { return r.Psw.Addr } 113 114 func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.Addr = pc } 115 116 func (iov *Iovec) SetLen(length int) { 117 iov.Len = uint64(length) 118 } 119 120 func (msghdr *Msghdr) SetControllen(length int) { 121 msghdr.Controllen = uint64(length) 122 } 123 124 func (cmsg *Cmsghdr) SetLen(length int) { 125 cmsg.Len = uint64(length) 126 } 127 128 // Linux on s390x uses the old mmap interface, which requires arguments to be passed in a struct. 129 // mmap2 also requires arguments to be passed in a struct; it is currently not exposed in <asm/unistd.h>. 130 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 131 mmap_args := [6]uintptr{addr, length, uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset)} 132 r0, _, e1 := Syscall(SYS_MMAP, uintptr(unsafe.Pointer(&mmap_args[0])), 0, 0) 133 xaddr = uintptr(r0) 134 if e1 != 0 { 135 err = errnoErr(e1) 136 } 137 return 138 } 139 140 // On s390x Linux, all the socket calls go through an extra indirection. 141 // The arguments to the underlying system call (SYS_SOCKETCALL) are the 142 // number below and a pointer to an array of uintptr. 143 const ( 144 // see linux/net.h 145 netSocket = 1 146 netBind = 2 147 netConnect = 3 148 netListen = 4 149 netAccept = 5 150 netGetSockName = 6 151 netGetPeerName = 7 152 netSocketPair = 8 153 netSend = 9 154 netRecv = 10 155 netSendTo = 11 156 netRecvFrom = 12 157 netShutdown = 13 158 netSetSockOpt = 14 159 netGetSockOpt = 15 160 netSendMsg = 16 161 netRecvMsg = 17 162 netAccept4 = 18 163 netRecvMMsg = 19 164 netSendMMsg = 20 165 ) 166 167 func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (int, error) { 168 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 169 fd, _, err := Syscall(SYS_SOCKETCALL, netAccept, uintptr(unsafe.Pointer(&args)), 0) 170 if err != 0 { 171 return 0, err 172 } 173 return int(fd), nil 174 } 175 176 func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (int, error) { 177 args := [4]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags)} 178 fd, _, err := Syscall(SYS_SOCKETCALL, netAccept4, uintptr(unsafe.Pointer(&args)), 0) 179 if err != 0 { 180 return 0, err 181 } 182 return int(fd), nil 183 } 184 185 func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { 186 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 187 _, _, err := RawSyscall(SYS_SOCKETCALL, netGetSockName, uintptr(unsafe.Pointer(&args)), 0) 188 if err != 0 { 189 return err 190 } 191 return nil 192 } 193 194 func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { 195 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 196 _, _, err := RawSyscall(SYS_SOCKETCALL, netGetPeerName, uintptr(unsafe.Pointer(&args)), 0) 197 if err != 0 { 198 return err 199 } 200 return nil 201 } 202 203 func socketpair(domain int, typ int, flags int, fd *[2]int32) error { 204 args := [4]uintptr{uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd))} 205 _, _, err := RawSyscall(SYS_SOCKETCALL, netSocketPair, uintptr(unsafe.Pointer(&args)), 0) 206 if err != 0 { 207 return err 208 } 209 return nil 210 } 211 212 func bind(s int, addr unsafe.Pointer, addrlen _Socklen) error { 213 args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} 214 _, _, err := Syscall(SYS_SOCKETCALL, netBind, uintptr(unsafe.Pointer(&args)), 0) 215 if err != 0 { 216 return err 217 } 218 return nil 219 } 220 221 func connect(s int, addr unsafe.Pointer, addrlen _Socklen) error { 222 args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} 223 _, _, err := Syscall(SYS_SOCKETCALL, netConnect, uintptr(unsafe.Pointer(&args)), 0) 224 if err != 0 { 225 return err 226 } 227 return nil 228 } 229 230 func socket(domain int, typ int, proto int) (int, error) { 231 args := [3]uintptr{uintptr(domain), uintptr(typ), uintptr(proto)} 232 fd, _, err := RawSyscall(SYS_SOCKETCALL, netSocket, uintptr(unsafe.Pointer(&args)), 0) 233 if err != 0 { 234 return 0, err 235 } 236 return int(fd), nil 237 } 238 239 func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) error { 240 args := [5]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen))} 241 _, _, err := Syscall(SYS_SOCKETCALL, netGetSockOpt, uintptr(unsafe.Pointer(&args)), 0) 242 if err != 0 { 243 return err 244 } 245 return nil 246 } 247 248 func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) error { 249 args := [4]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val)} 250 _, _, err := Syscall(SYS_SOCKETCALL, netSetSockOpt, uintptr(unsafe.Pointer(&args)), 0) 251 if err != 0 { 252 return err 253 } 254 return nil 255 } 256 257 func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (int, error) { 258 var base uintptr 259 if len(p) > 0 { 260 base = uintptr(unsafe.Pointer(&p[0])) 261 } 262 args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen))} 263 n, _, err := Syscall(SYS_SOCKETCALL, netRecvFrom, uintptr(unsafe.Pointer(&args)), 0) 264 if err != 0 { 265 return 0, err 266 } 267 return int(n), nil 268 } 269 270 func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) error { 271 var base uintptr 272 if len(p) > 0 { 273 base = uintptr(unsafe.Pointer(&p[0])) 274 } 275 args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen)} 276 _, _, err := Syscall(SYS_SOCKETCALL, netSendTo, uintptr(unsafe.Pointer(&args)), 0) 277 if err != 0 { 278 return err 279 } 280 return nil 281 } 282 283 func recvmsg(s int, msg *Msghdr, flags int) (int, error) { 284 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} 285 n, _, err := Syscall(SYS_SOCKETCALL, netRecvMsg, uintptr(unsafe.Pointer(&args)), 0) 286 if err != 0 { 287 return 0, err 288 } 289 return int(n), nil 290 } 291 292 func sendmsg(s int, msg *Msghdr, flags int) (int, error) { 293 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} 294 n, _, err := Syscall(SYS_SOCKETCALL, netSendMsg, uintptr(unsafe.Pointer(&args)), 0) 295 if err != 0 { 296 return 0, err 297 } 298 return int(n), nil 299 } 300 301 func Listen(s int, n int) error { 302 args := [2]uintptr{uintptr(s), uintptr(n)} 303 _, _, err := Syscall(SYS_SOCKETCALL, netListen, uintptr(unsafe.Pointer(&args)), 0) 304 if err != 0 { 305 return err 306 } 307 return nil 308 } 309 310 func Shutdown(s, how int) error { 311 args := [2]uintptr{uintptr(s), uintptr(how)} 312 _, _, err := Syscall(SYS_SOCKETCALL, netShutdown, uintptr(unsafe.Pointer(&args)), 0) 313 if err != 0 { 314 return err 315 } 316 return nil 317 } 318 319 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 320 321 func Poll(fds []PollFd, timeout int) (n int, err error) { 322 if len(fds) == 0 { 323 return poll(nil, 0, timeout) 324 } 325 return poll(&fds[0], len(fds), timeout) 326 }