github.com/jgarto/itcv@v0.0.0-20180826224514-4eea09c1aa0d/_vendor/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 func Getpagesize() int { return 4096 } 50 51 //sysnb Gettimeofday(tv *Timeval) (err error) 52 53 func Time(t *Time_t) (tt Time_t, err error) { 54 var tv Timeval 55 err = Gettimeofday(&tv) 56 if err != nil { 57 return 0, err 58 } 59 if t != nil { 60 *t = Time_t(tv.Sec) 61 } 62 return Time_t(tv.Sec), nil 63 } 64 65 //sys Utime(path string, buf *Utimbuf) (err error) 66 67 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) } 68 69 func NsecToTimespec(nsec int64) (ts Timespec) { 70 ts.Sec = nsec / 1e9 71 ts.Nsec = nsec % 1e9 72 return 73 } 74 75 func NsecToTimeval(nsec int64) (tv Timeval) { 76 nsec += 999 // round up to microsecond 77 tv.Sec = nsec / 1e9 78 tv.Usec = nsec % 1e9 / 1e3 79 return 80 } 81 82 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 83 84 func Pipe(p []int) (err error) { 85 if len(p) != 2 { 86 return EINVAL 87 } 88 var pp [2]_C_int 89 err = pipe2(&pp, 0) // pipe2 is the same as pipe when flags are set to 0. 90 p[0] = int(pp[0]) 91 p[1] = int(pp[1]) 92 return 93 } 94 95 func Pipe2(p []int, flags int) (err error) { 96 if len(p) != 2 { 97 return EINVAL 98 } 99 var pp [2]_C_int 100 err = pipe2(&pp, flags) 101 p[0] = int(pp[0]) 102 p[1] = int(pp[1]) 103 return 104 } 105 106 func Ioperm(from int, num int, on int) (err error) { 107 return ENOSYS 108 } 109 110 func Iopl(level int) (err error) { 111 return ENOSYS 112 } 113 114 func (r *PtraceRegs) PC() uint64 { return r.Psw.Addr } 115 116 func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.Addr = pc } 117 118 func (iov *Iovec) SetLen(length int) { 119 iov.Len = uint64(length) 120 } 121 122 func (msghdr *Msghdr) SetControllen(length int) { 123 msghdr.Controllen = uint64(length) 124 } 125 126 func (cmsg *Cmsghdr) SetLen(length int) { 127 cmsg.Len = uint64(length) 128 } 129 130 // Linux on s390x uses the old mmap interface, which requires arguments to be passed in a struct. 131 // mmap2 also requires arguments to be passed in a struct; it is currently not exposed in <asm/unistd.h>. 132 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 133 mmap_args := [6]uintptr{addr, length, uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset)} 134 r0, _, e1 := Syscall(SYS_MMAP, uintptr(unsafe.Pointer(&mmap_args[0])), 0, 0) 135 xaddr = uintptr(r0) 136 if e1 != 0 { 137 err = errnoErr(e1) 138 } 139 return 140 } 141 142 // On s390x Linux, all the socket calls go through an extra indirection. 143 // The arguments to the underlying system call (SYS_SOCKETCALL) are the 144 // number below and a pointer to an array of uintptr. 145 const ( 146 // see linux/net.h 147 netSocket = 1 148 netBind = 2 149 netConnect = 3 150 netListen = 4 151 netAccept = 5 152 netGetSockName = 6 153 netGetPeerName = 7 154 netSocketPair = 8 155 netSend = 9 156 netRecv = 10 157 netSendTo = 11 158 netRecvFrom = 12 159 netShutdown = 13 160 netSetSockOpt = 14 161 netGetSockOpt = 15 162 netSendMsg = 16 163 netRecvMsg = 17 164 netAccept4 = 18 165 netRecvMMsg = 19 166 netSendMMsg = 20 167 ) 168 169 func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (int, error) { 170 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 171 fd, _, err := Syscall(SYS_SOCKETCALL, netAccept, uintptr(unsafe.Pointer(&args)), 0) 172 if err != 0 { 173 return 0, err 174 } 175 return int(fd), nil 176 } 177 178 func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (int, error) { 179 args := [4]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags)} 180 fd, _, err := Syscall(SYS_SOCKETCALL, netAccept4, uintptr(unsafe.Pointer(&args)), 0) 181 if err != 0 { 182 return 0, err 183 } 184 return int(fd), nil 185 } 186 187 func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { 188 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 189 _, _, err := RawSyscall(SYS_SOCKETCALL, netGetSockName, uintptr(unsafe.Pointer(&args)), 0) 190 if err != 0 { 191 return err 192 } 193 return nil 194 } 195 196 func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { 197 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 198 _, _, err := RawSyscall(SYS_SOCKETCALL, netGetPeerName, uintptr(unsafe.Pointer(&args)), 0) 199 if err != 0 { 200 return err 201 } 202 return nil 203 } 204 205 func socketpair(domain int, typ int, flags int, fd *[2]int32) error { 206 args := [4]uintptr{uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd))} 207 _, _, err := RawSyscall(SYS_SOCKETCALL, netSocketPair, uintptr(unsafe.Pointer(&args)), 0) 208 if err != 0 { 209 return err 210 } 211 return nil 212 } 213 214 func bind(s int, addr unsafe.Pointer, addrlen _Socklen) error { 215 args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} 216 _, _, err := Syscall(SYS_SOCKETCALL, netBind, uintptr(unsafe.Pointer(&args)), 0) 217 if err != 0 { 218 return err 219 } 220 return nil 221 } 222 223 func connect(s int, addr unsafe.Pointer, addrlen _Socklen) error { 224 args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} 225 _, _, err := Syscall(SYS_SOCKETCALL, netConnect, uintptr(unsafe.Pointer(&args)), 0) 226 if err != 0 { 227 return err 228 } 229 return nil 230 } 231 232 func socket(domain int, typ int, proto int) (int, error) { 233 args := [3]uintptr{uintptr(domain), uintptr(typ), uintptr(proto)} 234 fd, _, err := RawSyscall(SYS_SOCKETCALL, netSocket, uintptr(unsafe.Pointer(&args)), 0) 235 if err != 0 { 236 return 0, err 237 } 238 return int(fd), nil 239 } 240 241 func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) error { 242 args := [5]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen))} 243 _, _, err := Syscall(SYS_SOCKETCALL, netGetSockOpt, uintptr(unsafe.Pointer(&args)), 0) 244 if err != 0 { 245 return err 246 } 247 return nil 248 } 249 250 func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) error { 251 args := [4]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val)} 252 _, _, err := Syscall(SYS_SOCKETCALL, netSetSockOpt, uintptr(unsafe.Pointer(&args)), 0) 253 if err != 0 { 254 return err 255 } 256 return nil 257 } 258 259 func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (int, error) { 260 var base uintptr 261 if len(p) > 0 { 262 base = uintptr(unsafe.Pointer(&p[0])) 263 } 264 args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen))} 265 n, _, err := Syscall(SYS_SOCKETCALL, netRecvFrom, uintptr(unsafe.Pointer(&args)), 0) 266 if err != 0 { 267 return 0, err 268 } 269 return int(n), nil 270 } 271 272 func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) error { 273 var base uintptr 274 if len(p) > 0 { 275 base = uintptr(unsafe.Pointer(&p[0])) 276 } 277 args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen)} 278 _, _, err := Syscall(SYS_SOCKETCALL, netSendTo, uintptr(unsafe.Pointer(&args)), 0) 279 if err != 0 { 280 return err 281 } 282 return nil 283 } 284 285 func recvmsg(s int, msg *Msghdr, flags int) (int, error) { 286 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} 287 n, _, err := Syscall(SYS_SOCKETCALL, netRecvMsg, uintptr(unsafe.Pointer(&args)), 0) 288 if err != 0 { 289 return 0, err 290 } 291 return int(n), nil 292 } 293 294 func sendmsg(s int, msg *Msghdr, flags int) (int, error) { 295 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} 296 n, _, err := Syscall(SYS_SOCKETCALL, netSendMsg, uintptr(unsafe.Pointer(&args)), 0) 297 if err != 0 { 298 return 0, err 299 } 300 return int(n), nil 301 } 302 303 func Listen(s int, n int) error { 304 args := [2]uintptr{uintptr(s), uintptr(n)} 305 _, _, err := Syscall(SYS_SOCKETCALL, netListen, uintptr(unsafe.Pointer(&args)), 0) 306 if err != 0 { 307 return err 308 } 309 return nil 310 } 311 312 func Shutdown(s, how int) error { 313 args := [2]uintptr{uintptr(s), uintptr(how)} 314 _, _, err := Syscall(SYS_SOCKETCALL, netShutdown, uintptr(unsafe.Pointer(&args)), 0) 315 if err != 0 { 316 return err 317 } 318 return nil 319 } 320 321 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 322 323 func Poll(fds []PollFd, timeout int) (n int, err error) { 324 if len(fds) == 0 { 325 return poll(nil, 0, timeout) 326 } 327 return poll(&fds[0], len(fds), timeout) 328 }