rss-tools/vendor/golang.org/x/sys/unix/syscall_zos_s390x.go (view raw)
| 1 | // Copyright 2020 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 zos && s390x |
| 6 | |
| 7 | // Many of the following syscalls are not available on all versions of z/OS. |
| 8 | // Some missing calls have legacy implementations/simulations but others |
| 9 | // will be missing completely. To achieve consistent failing behaviour on |
| 10 | // legacy systems, we first test the function pointer via a safeloading |
| 11 | // mechanism to see if the function exists on a given system. Then execution |
| 12 | // is branched to either continue the function call, or return an error. |
| 13 | |
| 14 | package unix |
| 15 | |
| 16 | import ( |
| 17 | "bytes" |
| 18 | "fmt" |
| 19 | "os" |
| 20 | "reflect" |
| 21 | "regexp" |
| 22 | "runtime" |
| 23 | "sort" |
| 24 | "strings" |
| 25 | "sync" |
| 26 | "syscall" |
| 27 | "unsafe" |
| 28 | ) |
| 29 | |
| 30 | //go:noescape |
| 31 | func initZosLibVec() |
| 32 | |
| 33 | //go:noescape |
| 34 | func GetZosLibVec() uintptr |
| 35 | |
| 36 | func init() { |
| 37 | initZosLibVec() |
| 38 | r0, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS_____GETENV_A<<4, uintptr(unsafe.Pointer(&([]byte("__ZOS_XSYSTRACE\x00"))[0]))) |
| 39 | if r0 != 0 { |
| 40 | n, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___ATOI_A<<4, r0) |
| 41 | ZosTraceLevel = int(n) |
| 42 | r0, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS_____GETENV_A<<4, uintptr(unsafe.Pointer(&([]byte("__ZOS_XSYSTRACEFD\x00"))[0]))) |
| 43 | if r0 != 0 { |
| 44 | fd, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___ATOI_A<<4, r0) |
| 45 | f := os.NewFile(fd, "zostracefile") |
| 46 | if f != nil { |
| 47 | ZosTracefile = f |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | //go:noescape |
| 55 | func CallLeFuncWithErr(funcdesc uintptr, parms ...uintptr) (ret, errno2 uintptr, err Errno) |
| 56 | |
| 57 | //go:noescape |
| 58 | func CallLeFuncWithPtrReturn(funcdesc uintptr, parms ...uintptr) (ret, errno2 uintptr, err Errno) |
| 59 | |
| 60 | // ------------------------------- |
| 61 | // pointer validity test |
| 62 | // good pointer returns 0 |
| 63 | // bad pointer returns 1 |
| 64 | // |
| 65 | //go:nosplit |
| 66 | func ptrtest(uintptr) uint64 |
| 67 | |
| 68 | // Load memory at ptr location with error handling if the location is invalid |
| 69 | // |
| 70 | //go:noescape |
| 71 | func safeload(ptr uintptr) (value uintptr, error uintptr) |
| 72 | |
| 73 | const ( |
| 74 | entrypointLocationOffset = 8 // From function descriptor |
| 75 | |
| 76 | xplinkEyecatcher = 0x00c300c500c500f1 // ".C.E.E.1" |
| 77 | eyecatcherOffset = 16 // From function entrypoint (negative) |
| 78 | ppa1LocationOffset = 8 // From function entrypoint (negative) |
| 79 | |
| 80 | nameLenOffset = 0x14 // From PPA1 start |
| 81 | nameOffset = 0x16 // From PPA1 start |
| 82 | ) |
| 83 | |
| 84 | func getPpaOffset(funcptr uintptr) int64 { |
| 85 | entrypoint, err := safeload(funcptr + entrypointLocationOffset) |
| 86 | if err != 0 { |
| 87 | return -1 |
| 88 | } |
| 89 | |
| 90 | // XPLink functions have ".C.E.E.1" as the first 8 bytes (EBCDIC) |
| 91 | val, err := safeload(entrypoint - eyecatcherOffset) |
| 92 | if err != 0 { |
| 93 | return -1 |
| 94 | } |
| 95 | if val != xplinkEyecatcher { |
| 96 | return -1 |
| 97 | } |
| 98 | |
| 99 | ppaoff, err := safeload(entrypoint - ppa1LocationOffset) |
| 100 | if err != 0 { |
| 101 | return -1 |
| 102 | } |
| 103 | |
| 104 | ppaoff >>= 32 |
| 105 | return int64(ppaoff) |
| 106 | } |
| 107 | |
| 108 | //------------------------------- |
| 109 | // function descriptor pointer validity test |
| 110 | // good pointer returns 0 |
| 111 | // bad pointer returns 1 |
| 112 | |
| 113 | // TODO: currently mksyscall_zos_s390x.go generate empty string for funcName |
| 114 | // have correct funcName pass to the funcptrtest function |
| 115 | func funcptrtest(funcptr uintptr, funcName string) uint64 { |
| 116 | entrypoint, err := safeload(funcptr + entrypointLocationOffset) |
| 117 | if err != 0 { |
| 118 | return 1 |
| 119 | } |
| 120 | |
| 121 | ppaoff := getPpaOffset(funcptr) |
| 122 | if ppaoff == -1 { |
| 123 | return 1 |
| 124 | } |
| 125 | |
| 126 | // PPA1 offset value is from the start of the entire function block, not the entrypoint |
| 127 | ppa1 := (entrypoint - eyecatcherOffset) + uintptr(ppaoff) |
| 128 | |
| 129 | nameLen, err := safeload(ppa1 + nameLenOffset) |
| 130 | if err != 0 { |
| 131 | return 1 |
| 132 | } |
| 133 | |
| 134 | nameLen >>= 48 |
| 135 | if nameLen > 128 { |
| 136 | return 1 |
| 137 | } |
| 138 | |
| 139 | // no function name input to argument end here |
| 140 | if funcName == "" { |
| 141 | return 0 |
| 142 | } |
| 143 | |
| 144 | var funcname [128]byte |
| 145 | for i := 0; i < int(nameLen); i += 8 { |
| 146 | v, err := safeload(ppa1 + nameOffset + uintptr(i)) |
| 147 | if err != 0 { |
| 148 | return 1 |
| 149 | } |
| 150 | funcname[i] = byte(v >> 56) |
| 151 | funcname[i+1] = byte(v >> 48) |
| 152 | funcname[i+2] = byte(v >> 40) |
| 153 | funcname[i+3] = byte(v >> 32) |
| 154 | funcname[i+4] = byte(v >> 24) |
| 155 | funcname[i+5] = byte(v >> 16) |
| 156 | funcname[i+6] = byte(v >> 8) |
| 157 | funcname[i+7] = byte(v) |
| 158 | } |
| 159 | |
| 160 | runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, // __e2a_l |
| 161 | []uintptr{uintptr(unsafe.Pointer(&funcname[0])), nameLen}) |
| 162 | |
| 163 | name := string(funcname[:nameLen]) |
| 164 | if name != funcName { |
| 165 | return 1 |
| 166 | } |
| 167 | |
| 168 | return 0 |
| 169 | } |
| 170 | |
| 171 | // For detection of capabilities on a system. |
| 172 | // Is function descriptor f a valid function? |
| 173 | func isValidLeFunc(f uintptr) error { |
| 174 | ret := funcptrtest(f, "") |
| 175 | if ret != 0 { |
| 176 | return fmt.Errorf("Bad pointer, not an LE function ") |
| 177 | } |
| 178 | return nil |
| 179 | } |
| 180 | |
| 181 | // Retrieve function name from descriptor |
| 182 | func getLeFuncName(f uintptr) (string, error) { |
| 183 | // assume it has been checked, only check ppa1 validity here |
| 184 | entry := ((*[2]uintptr)(unsafe.Pointer(f)))[1] |
| 185 | preamp := ((*[4]uint32)(unsafe.Pointer(entry - eyecatcherOffset))) |
| 186 | |
| 187 | offsetPpa1 := preamp[2] |
| 188 | if offsetPpa1 > 0x0ffff { |
| 189 | return "", fmt.Errorf("PPA1 offset seems too big 0x%x\n", offsetPpa1) |
| 190 | } |
| 191 | |
| 192 | ppa1 := uintptr(unsafe.Pointer(preamp)) + uintptr(offsetPpa1) |
| 193 | res := ptrtest(ppa1) |
| 194 | if res != 0 { |
| 195 | return "", fmt.Errorf("PPA1 address not valid") |
| 196 | } |
| 197 | |
| 198 | size := *(*uint16)(unsafe.Pointer(ppa1 + nameLenOffset)) |
| 199 | if size > 128 { |
| 200 | return "", fmt.Errorf("Function name seems too long, length=%d\n", size) |
| 201 | } |
| 202 | |
| 203 | var name [128]byte |
| 204 | funcname := (*[128]byte)(unsafe.Pointer(ppa1 + nameOffset)) |
| 205 | copy(name[0:size], funcname[0:size]) |
| 206 | |
| 207 | runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, // __e2a_l |
| 208 | []uintptr{uintptr(unsafe.Pointer(&name[0])), uintptr(size)}) |
| 209 | |
| 210 | return string(name[:size]), nil |
| 211 | } |
| 212 | |
| 213 | // Check z/OS version |
| 214 | func zosLeVersion() (version, release uint32) { |
| 215 | p1 := (*(*uintptr)(unsafe.Pointer(uintptr(1208)))) >> 32 |
| 216 | p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 88))) |
| 217 | p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 8))) |
| 218 | p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 984))) |
| 219 | vrm := *(*uint32)(unsafe.Pointer(p1 + 80)) |
| 220 | version = (vrm & 0x00ff0000) >> 16 |
| 221 | release = (vrm & 0x0000ff00) >> 8 |
| 222 | return |
| 223 | } |
| 224 | |
| 225 | // returns a zos C FILE * for stdio fd 0, 1, 2 |
| 226 | func ZosStdioFilep(fd int32) uintptr { |
| 227 | return uintptr(*(*uint64)(unsafe.Pointer(uintptr(*(*uint64)(unsafe.Pointer(uintptr(*(*uint64)(unsafe.Pointer(uintptr(uint64(*(*uint32)(unsafe.Pointer(uintptr(1208)))) + 80))) + uint64((fd+2)<<3)))))))) |
| 228 | } |
| 229 | |
| 230 | func copyStat(stat *Stat_t, statLE *Stat_LE_t) { |
| 231 | stat.Dev = uint64(statLE.Dev) |
| 232 | stat.Ino = uint64(statLE.Ino) |
| 233 | stat.Nlink = uint64(statLE.Nlink) |
| 234 | stat.Mode = uint32(statLE.Mode) |
| 235 | stat.Uid = uint32(statLE.Uid) |
| 236 | stat.Gid = uint32(statLE.Gid) |
| 237 | stat.Rdev = uint64(statLE.Rdev) |
| 238 | stat.Size = statLE.Size |
| 239 | stat.Atim.Sec = int64(statLE.Atim) |
| 240 | stat.Atim.Nsec = 0 //zos doesn't return nanoseconds |
| 241 | stat.Mtim.Sec = int64(statLE.Mtim) |
| 242 | stat.Mtim.Nsec = 0 //zos doesn't return nanoseconds |
| 243 | stat.Ctim.Sec = int64(statLE.Ctim) |
| 244 | stat.Ctim.Nsec = 0 //zos doesn't return nanoseconds |
| 245 | stat.Blksize = int64(statLE.Blksize) |
| 246 | stat.Blocks = statLE.Blocks |
| 247 | } |
| 248 | |
| 249 | func svcCall(fnptr unsafe.Pointer, argv *unsafe.Pointer, dsa *uint64) |
| 250 | func svcLoad(name *byte) unsafe.Pointer |
| 251 | func svcUnload(name *byte, fnptr unsafe.Pointer) int64 |
| 252 | |
| 253 | func (d *Dirent) NameString() string { |
| 254 | if d == nil { |
| 255 | return "" |
| 256 | } |
| 257 | s := string(d.Name[:]) |
| 258 | idx := strings.IndexByte(s, 0) |
| 259 | if idx == -1 { |
| 260 | return s |
| 261 | } else { |
| 262 | return s[:idx] |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | func DecodeData(dest []byte, sz int, val uint64) { |
| 267 | for i := 0; i < sz; i++ { |
| 268 | dest[sz-1-i] = byte((val >> (uint64(i * 8))) & 0xff) |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | func EncodeData(data []byte) uint64 { |
| 273 | var value uint64 |
| 274 | sz := len(data) |
| 275 | for i := 0; i < sz; i++ { |
| 276 | value |= uint64(data[i]) << uint64(((sz - i - 1) * 8)) |
| 277 | } |
| 278 | return value |
| 279 | } |
| 280 | |
| 281 | func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { |
| 282 | if sa.Port < 0 || sa.Port > 0xFFFF { |
| 283 | return nil, 0, EINVAL |
| 284 | } |
| 285 | sa.raw.Len = SizeofSockaddrInet4 |
| 286 | sa.raw.Family = AF_INET |
| 287 | p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
| 288 | p[0] = byte(sa.Port >> 8) |
| 289 | p[1] = byte(sa.Port) |
| 290 | for i := 0; i < len(sa.Addr); i++ { |
| 291 | sa.raw.Addr[i] = sa.Addr[i] |
| 292 | } |
| 293 | return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil |
| 294 | } |
| 295 | |
| 296 | func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) { |
| 297 | if sa.Port < 0 || sa.Port > 0xFFFF { |
| 298 | return nil, 0, EINVAL |
| 299 | } |
| 300 | sa.raw.Len = SizeofSockaddrInet6 |
| 301 | sa.raw.Family = AF_INET6 |
| 302 | p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) |
| 303 | p[0] = byte(sa.Port >> 8) |
| 304 | p[1] = byte(sa.Port) |
| 305 | sa.raw.Scope_id = sa.ZoneId |
| 306 | for i := 0; i < len(sa.Addr); i++ { |
| 307 | sa.raw.Addr[i] = sa.Addr[i] |
| 308 | } |
| 309 | return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil |
| 310 | } |
| 311 | |
| 312 | func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) { |
| 313 | name := sa.Name |
| 314 | n := len(name) |
| 315 | if n >= len(sa.raw.Path) || n == 0 { |
| 316 | return nil, 0, EINVAL |
| 317 | } |
| 318 | sa.raw.Len = byte(3 + n) // 2 for Family, Len; 1 for NUL |
| 319 | sa.raw.Family = AF_UNIX |
| 320 | for i := 0; i < n; i++ { |
| 321 | sa.raw.Path[i] = int8(name[i]) |
| 322 | } |
| 323 | return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil |
| 324 | } |
| 325 | |
| 326 | func anyToSockaddr(_ int, rsa *RawSockaddrAny) (Sockaddr, error) { |
| 327 | // TODO(neeilan): Implement use of first param (fd) |
| 328 | switch rsa.Addr.Family { |
| 329 | case AF_UNIX: |
| 330 | pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) |
| 331 | sa := new(SockaddrUnix) |
| 332 | // For z/OS, only replace NUL with @ when the |
| 333 | // length is not zero. |
| 334 | if pp.Len != 0 && pp.Path[0] == 0 { |
| 335 | // "Abstract" Unix domain socket. |
| 336 | // Rewrite leading NUL as @ for textual display. |
| 337 | // (This is the standard convention.) |
| 338 | // Not friendly to overwrite in place, |
| 339 | // but the callers below don't care. |
| 340 | pp.Path[0] = '@' |
| 341 | } |
| 342 | |
| 343 | // Assume path ends at NUL. |
| 344 | // |
| 345 | // For z/OS, the length of the name is a field |
| 346 | // in the structure. To be on the safe side, we |
| 347 | // will still scan the name for a NUL but only |
| 348 | // to the length provided in the structure. |
| 349 | // |
| 350 | // This is not technically the Linux semantics for |
| 351 | // abstract Unix domain sockets--they are supposed |
| 352 | // to be uninterpreted fixed-size binary blobs--but |
| 353 | // everyone uses this convention. |
| 354 | n := 0 |
| 355 | for n < int(pp.Len) && pp.Path[n] != 0 { |
| 356 | n++ |
| 357 | } |
| 358 | sa.Name = string(unsafe.Slice((*byte)(unsafe.Pointer(&pp.Path[0])), n)) |
| 359 | return sa, nil |
| 360 | |
| 361 | case AF_INET: |
| 362 | pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) |
| 363 | sa := new(SockaddrInet4) |
| 364 | p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
| 365 | sa.Port = int(p[0])<<8 + int(p[1]) |
| 366 | for i := 0; i < len(sa.Addr); i++ { |
| 367 | sa.Addr[i] = pp.Addr[i] |
| 368 | } |
| 369 | return sa, nil |
| 370 | |
| 371 | case AF_INET6: |
| 372 | pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) |
| 373 | sa := new(SockaddrInet6) |
| 374 | p := (*[2]byte)(unsafe.Pointer(&pp.Port)) |
| 375 | sa.Port = int(p[0])<<8 + int(p[1]) |
| 376 | sa.ZoneId = pp.Scope_id |
| 377 | for i := 0; i < len(sa.Addr); i++ { |
| 378 | sa.Addr[i] = pp.Addr[i] |
| 379 | } |
| 380 | return sa, nil |
| 381 | } |
| 382 | return nil, EAFNOSUPPORT |
| 383 | } |
| 384 | |
| 385 | func Accept(fd int) (nfd int, sa Sockaddr, err error) { |
| 386 | var rsa RawSockaddrAny |
| 387 | var len _Socklen = SizeofSockaddrAny |
| 388 | nfd, err = accept(fd, &rsa, &len) |
| 389 | if err != nil { |
| 390 | return |
| 391 | } |
| 392 | // TODO(neeilan): Remove 0 in call |
| 393 | sa, err = anyToSockaddr(0, &rsa) |
| 394 | if err != nil { |
| 395 | Close(nfd) |
| 396 | nfd = 0 |
| 397 | } |
| 398 | return |
| 399 | } |
| 400 | |
| 401 | func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) { |
| 402 | var rsa RawSockaddrAny |
| 403 | var len _Socklen = SizeofSockaddrAny |
| 404 | nfd, err = accept4(fd, &rsa, &len, flags) |
| 405 | if err != nil { |
| 406 | return |
| 407 | } |
| 408 | if len > SizeofSockaddrAny { |
| 409 | panic("RawSockaddrAny too small") |
| 410 | } |
| 411 | // TODO(neeilan): Remove 0 in call |
| 412 | sa, err = anyToSockaddr(0, &rsa) |
| 413 | if err != nil { |
| 414 | Close(nfd) |
| 415 | nfd = 0 |
| 416 | } |
| 417 | return |
| 418 | } |
| 419 | |
| 420 | func Ctermid() (tty string, err error) { |
| 421 | var termdev [1025]byte |
| 422 | runtime.EnterSyscall() |
| 423 | r0, err2, err1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___CTERMID_A<<4, uintptr(unsafe.Pointer(&termdev[0]))) |
| 424 | runtime.ExitSyscall() |
| 425 | if r0 == 0 { |
| 426 | return "", fmt.Errorf("%s (errno2=0x%x)\n", err1.Error(), err2) |
| 427 | } |
| 428 | s := string(termdev[:]) |
| 429 | idx := strings.Index(s, string(rune(0))) |
| 430 | if idx == -1 { |
| 431 | tty = s |
| 432 | } else { |
| 433 | tty = s[:idx] |
| 434 | } |
| 435 | return |
| 436 | } |
| 437 | |
| 438 | func (iov *Iovec) SetLen(length int) { |
| 439 | iov.Len = uint64(length) |
| 440 | } |
| 441 | |
| 442 | func (msghdr *Msghdr) SetControllen(length int) { |
| 443 | msghdr.Controllen = int32(length) |
| 444 | } |
| 445 | |
| 446 | func (cmsg *Cmsghdr) SetLen(length int) { |
| 447 | cmsg.Len = int32(length) |
| 448 | } |
| 449 | |
| 450 | //sys fcntl(fd int, cmd int, arg int) (val int, err error) |
| 451 | //sys Flistxattr(fd int, dest []byte) (sz int, err error) = SYS___FLISTXATTR_A |
| 452 | //sys Fremovexattr(fd int, attr string) (err error) = SYS___FREMOVEXATTR_A |
| 453 | //sys read(fd int, p []byte) (n int, err error) |
| 454 | //sys write(fd int, p []byte) (n int, err error) |
| 455 | |
| 456 | //sys Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) = SYS___FGETXATTR_A |
| 457 | //sys Fsetxattr(fd int, attr string, data []byte, flag int) (err error) = SYS___FSETXATTR_A |
| 458 | |
| 459 | //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) = SYS___ACCEPT_A |
| 460 | //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = SYS___ACCEPT4_A |
| 461 | //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = SYS___BIND_A |
| 462 | //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = SYS___CONNECT_A |
| 463 | //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) |
| 464 | //sysnb setgroups(n int, list *_Gid_t) (err error) |
| 465 | //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) |
| 466 | //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) |
| 467 | //sysnb socket(domain int, typ int, proto int) (fd int, err error) |
| 468 | //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) |
| 469 | //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = SYS___GETPEERNAME_A |
| 470 | //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = SYS___GETSOCKNAME_A |
| 471 | //sys Removexattr(path string, attr string) (err error) = SYS___REMOVEXATTR_A |
| 472 | //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) = SYS___RECVFROM_A |
| 473 | //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) = SYS___SENDTO_A |
| 474 | //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = SYS___RECVMSG_A |
| 475 | //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = SYS___SENDMSG_A |
| 476 | //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) = SYS_MMAP |
| 477 | //sys munmap(addr uintptr, length uintptr) (err error) = SYS_MUNMAP |
| 478 | //sys ioctl(fd int, req int, arg uintptr) (err error) = SYS_IOCTL |
| 479 | //sys ioctlPtr(fd int, req int, arg unsafe.Pointer) (err error) = SYS_IOCTL |
| 480 | //sys shmat(id int, addr uintptr, flag int) (ret uintptr, err error) = SYS_SHMAT |
| 481 | //sys shmctl(id int, cmd int, buf *SysvShmDesc) (result int, err error) = SYS_SHMCTL64 |
| 482 | //sys shmdt(addr uintptr) (err error) = SYS_SHMDT |
| 483 | //sys shmget(key int, size int, flag int) (id int, err error) = SYS_SHMGET |
| 484 | |
| 485 | //sys Access(path string, mode uint32) (err error) = SYS___ACCESS_A |
| 486 | //sys Chdir(path string) (err error) = SYS___CHDIR_A |
| 487 | //sys Chown(path string, uid int, gid int) (err error) = SYS___CHOWN_A |
| 488 | //sys Chmod(path string, mode uint32) (err error) = SYS___CHMOD_A |
| 489 | //sys Creat(path string, mode uint32) (fd int, err error) = SYS___CREAT_A |
| 490 | //sys Dup(oldfd int) (fd int, err error) |
| 491 | //sys Dup2(oldfd int, newfd int) (err error) |
| 492 | //sys Dup3(oldfd int, newfd int, flags int) (err error) = SYS_DUP3 |
| 493 | //sys Dirfd(dirp uintptr) (fd int, err error) = SYS_DIRFD |
| 494 | //sys EpollCreate(size int) (fd int, err error) = SYS_EPOLL_CREATE |
| 495 | //sys EpollCreate1(flags int) (fd int, err error) = SYS_EPOLL_CREATE1 |
| 496 | //sys EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error) = SYS_EPOLL_CTL |
| 497 | //sys EpollPwait(epfd int, events []EpollEvent, msec int, sigmask *int) (n int, err error) = SYS_EPOLL_PWAIT |
| 498 | //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_WAIT |
| 499 | //sys Errno2() (er2 int) = SYS___ERRNO2 |
| 500 | //sys Eventfd(initval uint, flags int) (fd int, err error) = SYS_EVENTFD |
| 501 | //sys Exit(code int) |
| 502 | //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) = SYS___FACCESSAT_A |
| 503 | |
| 504 | func Faccessat2(dirfd int, path string, mode uint32, flags int) (err error) { |
| 505 | return Faccessat(dirfd, path, mode, flags) |
| 506 | } |
| 507 | |
| 508 | //sys Fchdir(fd int) (err error) |
| 509 | //sys Fchmod(fd int, mode uint32) (err error) |
| 510 | //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) = SYS___FCHMODAT_A |
| 511 | //sys Fchown(fd int, uid int, gid int) (err error) |
| 512 | //sys Fchownat(fd int, path string, uid int, gid int, flags int) (err error) = SYS___FCHOWNAT_A |
| 513 | //sys FcntlInt(fd uintptr, cmd int, arg int) (retval int, err error) = SYS_FCNTL |
| 514 | //sys Fdatasync(fd int) (err error) = SYS_FDATASYNC |
| 515 | //sys fstat(fd int, stat *Stat_LE_t) (err error) |
| 516 | //sys fstatat(dirfd int, path string, stat *Stat_LE_t, flags int) (err error) = SYS___FSTATAT_A |
| 517 | |
| 518 | func Fstat(fd int, stat *Stat_t) (err error) { |
| 519 | var statLE Stat_LE_t |
| 520 | err = fstat(fd, &statLE) |
| 521 | copyStat(stat, &statLE) |
| 522 | return |
| 523 | } |
| 524 | |
| 525 | func Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) { |
| 526 | var statLE Stat_LE_t |
| 527 | err = fstatat(dirfd, path, &statLE, flags) |
| 528 | copyStat(stat, &statLE) |
| 529 | return |
| 530 | } |
| 531 | |
| 532 | func impl_Getxattr(path string, attr string, dest []byte) (sz int, err error) { |
| 533 | var _p0 *byte |
| 534 | _p0, err = BytePtrFromString(path) |
| 535 | if err != nil { |
| 536 | return |
| 537 | } |
| 538 | var _p1 *byte |
| 539 | _p1, err = BytePtrFromString(attr) |
| 540 | if err != nil { |
| 541 | return |
| 542 | } |
| 543 | var _p2 unsafe.Pointer |
| 544 | if len(dest) > 0 { |
| 545 | _p2 = unsafe.Pointer(&dest[0]) |
| 546 | } else { |
| 547 | _p2 = unsafe.Pointer(&_zero) |
| 548 | } |
| 549 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___GETXATTR_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest))) |
| 550 | sz = int(r0) |
| 551 | if int64(r0) == -1 { |
| 552 | err = errnoErr2(e1, e2) |
| 553 | } |
| 554 | return |
| 555 | } |
| 556 | |
| 557 | //go:nosplit |
| 558 | func get_GetxattrAddr() *(func(path string, attr string, dest []byte) (sz int, err error)) |
| 559 | |
| 560 | var Getxattr = enter_Getxattr |
| 561 | |
| 562 | func enter_Getxattr(path string, attr string, dest []byte) (sz int, err error) { |
| 563 | funcref := get_GetxattrAddr() |
| 564 | if validGetxattr() { |
| 565 | *funcref = impl_Getxattr |
| 566 | } else { |
| 567 | *funcref = error_Getxattr |
| 568 | } |
| 569 | return (*funcref)(path, attr, dest) |
| 570 | } |
| 571 | |
| 572 | func error_Getxattr(path string, attr string, dest []byte) (sz int, err error) { |
| 573 | return -1, ENOSYS |
| 574 | } |
| 575 | |
| 576 | func validGetxattr() bool { |
| 577 | if funcptrtest(GetZosLibVec()+SYS___GETXATTR_A<<4, "") == 0 { |
| 578 | if name, err := getLeFuncName(GetZosLibVec() + SYS___GETXATTR_A<<4); err == nil { |
| 579 | return name == "__getxattr_a" |
| 580 | } |
| 581 | } |
| 582 | return false |
| 583 | } |
| 584 | |
| 585 | //sys Lgetxattr(link string, attr string, dest []byte) (sz int, err error) = SYS___LGETXATTR_A |
| 586 | //sys Lsetxattr(path string, attr string, data []byte, flags int) (err error) = SYS___LSETXATTR_A |
| 587 | |
| 588 | func impl_Setxattr(path string, attr string, data []byte, flags int) (err error) { |
| 589 | var _p0 *byte |
| 590 | _p0, err = BytePtrFromString(path) |
| 591 | if err != nil { |
| 592 | return |
| 593 | } |
| 594 | var _p1 *byte |
| 595 | _p1, err = BytePtrFromString(attr) |
| 596 | if err != nil { |
| 597 | return |
| 598 | } |
| 599 | var _p2 unsafe.Pointer |
| 600 | if len(data) > 0 { |
| 601 | _p2 = unsafe.Pointer(&data[0]) |
| 602 | } else { |
| 603 | _p2 = unsafe.Pointer(&_zero) |
| 604 | } |
| 605 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___SETXATTR_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags)) |
| 606 | if int64(r0) == -1 { |
| 607 | err = errnoErr2(e1, e2) |
| 608 | } |
| 609 | return |
| 610 | } |
| 611 | |
| 612 | //go:nosplit |
| 613 | func get_SetxattrAddr() *(func(path string, attr string, data []byte, flags int) (err error)) |
| 614 | |
| 615 | var Setxattr = enter_Setxattr |
| 616 | |
| 617 | func enter_Setxattr(path string, attr string, data []byte, flags int) (err error) { |
| 618 | funcref := get_SetxattrAddr() |
| 619 | if validSetxattr() { |
| 620 | *funcref = impl_Setxattr |
| 621 | } else { |
| 622 | *funcref = error_Setxattr |
| 623 | } |
| 624 | return (*funcref)(path, attr, data, flags) |
| 625 | } |
| 626 | |
| 627 | func error_Setxattr(path string, attr string, data []byte, flags int) (err error) { |
| 628 | return ENOSYS |
| 629 | } |
| 630 | |
| 631 | func validSetxattr() bool { |
| 632 | if funcptrtest(GetZosLibVec()+SYS___SETXATTR_A<<4, "") == 0 { |
| 633 | if name, err := getLeFuncName(GetZosLibVec() + SYS___SETXATTR_A<<4); err == nil { |
| 634 | return name == "__setxattr_a" |
| 635 | } |
| 636 | } |
| 637 | return false |
| 638 | } |
| 639 | |
| 640 | //sys Fstatfs(fd int, buf *Statfs_t) (err error) = SYS_FSTATFS |
| 641 | //sys Fstatvfs(fd int, stat *Statvfs_t) (err error) = SYS_FSTATVFS |
| 642 | //sys Fsync(fd int) (err error) |
| 643 | //sys Futimes(fd int, tv []Timeval) (err error) = SYS_FUTIMES |
| 644 | //sys Futimesat(dirfd int, path string, tv []Timeval) (err error) = SYS___FUTIMESAT_A |
| 645 | //sys Ftruncate(fd int, length int64) (err error) |
| 646 | //sys Getrandom(buf []byte, flags int) (n int, err error) = SYS_GETRANDOM |
| 647 | //sys InotifyInit() (fd int, err error) = SYS_INOTIFY_INIT |
| 648 | //sys InotifyInit1(flags int) (fd int, err error) = SYS_INOTIFY_INIT1 |
| 649 | //sys InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error) = SYS___INOTIFY_ADD_WATCH_A |
| 650 | //sys InotifyRmWatch(fd int, watchdesc uint32) (success int, err error) = SYS_INOTIFY_RM_WATCH |
| 651 | //sys Listxattr(path string, dest []byte) (sz int, err error) = SYS___LISTXATTR_A |
| 652 | //sys Llistxattr(path string, dest []byte) (sz int, err error) = SYS___LLISTXATTR_A |
| 653 | //sys Lremovexattr(path string, attr string) (err error) = SYS___LREMOVEXATTR_A |
| 654 | //sys Lutimes(path string, tv []Timeval) (err error) = SYS___LUTIMES_A |
| 655 | //sys Mprotect(b []byte, prot int) (err error) = SYS_MPROTECT |
| 656 | //sys Msync(b []byte, flags int) (err error) = SYS_MSYNC |
| 657 | //sys Console2(cmsg *ConsMsg2, modstr *byte, concmd *uint32) (err error) = SYS___CONSOLE2 |
| 658 | |
| 659 | // Pipe2 begin |
| 660 | |
| 661 | //go:nosplit |
| 662 | func getPipe2Addr() *(func([]int, int) error) |
| 663 | |
| 664 | var Pipe2 = pipe2Enter |
| 665 | |
| 666 | func pipe2Enter(p []int, flags int) (err error) { |
| 667 | if funcptrtest(GetZosLibVec()+SYS_PIPE2<<4, "") == 0 { |
| 668 | *getPipe2Addr() = pipe2Impl |
| 669 | } else { |
| 670 | *getPipe2Addr() = pipe2Error |
| 671 | } |
| 672 | return (*getPipe2Addr())(p, flags) |
| 673 | } |
| 674 | |
| 675 | func pipe2Impl(p []int, flags int) (err error) { |
| 676 | var pp [2]_C_int |
| 677 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_PIPE2<<4, uintptr(unsafe.Pointer(&pp[0])), uintptr(flags)) |
| 678 | if int64(r0) == -1 { |
| 679 | err = errnoErr2(e1, e2) |
| 680 | } else { |
| 681 | p[0] = int(pp[0]) |
| 682 | p[1] = int(pp[1]) |
| 683 | } |
| 684 | return |
| 685 | } |
| 686 | func pipe2Error(p []int, flags int) (err error) { |
| 687 | return fmt.Errorf("Pipe2 is not available on this system") |
| 688 | } |
| 689 | |
| 690 | // Pipe2 end |
| 691 | |
| 692 | //sys Poll(fds []PollFd, timeout int) (n int, err error) = SYS_POLL |
| 693 | |
| 694 | func Readdir(dir uintptr) (dirent *Dirent, err error) { |
| 695 | runtime.EnterSyscall() |
| 696 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___READDIR_A<<4, uintptr(dir)) |
| 697 | runtime.ExitSyscall() |
| 698 | dirent = (*Dirent)(unsafe.Pointer(r0)) |
| 699 | if int64(r0) == -1 { |
| 700 | err = errnoErr2(e1, e2) |
| 701 | } |
| 702 | return |
| 703 | } |
| 704 | |
| 705 | //sys Readdir_r(dirp uintptr, entry *direntLE, result **direntLE) (err error) = SYS___READDIR_R_A |
| 706 | //sys Statfs(path string, buf *Statfs_t) (err error) = SYS___STATFS_A |
| 707 | //sys Syncfs(fd int) (err error) = SYS_SYNCFS |
| 708 | //sys Times(tms *Tms) (ticks uintptr, err error) = SYS_TIMES |
| 709 | //sys W_Getmntent(buff *byte, size int) (lastsys int, err error) = SYS_W_GETMNTENT |
| 710 | //sys W_Getmntent_A(buff *byte, size int) (lastsys int, err error) = SYS___W_GETMNTENT_A |
| 711 | |
| 712 | //sys mount_LE(path string, filesystem string, fstype string, mtm uint32, parmlen int32, parm string) (err error) = SYS___MOUNT_A |
| 713 | //sys unmount_LE(filesystem string, mtm int) (err error) = SYS___UMOUNT_A |
| 714 | //sys Chroot(path string) (err error) = SYS___CHROOT_A |
| 715 | //sys Select(nmsgsfds int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (ret int, err error) = SYS_SELECT |
| 716 | //sysnb Uname(buf *Utsname) (err error) = SYS_____OSNAME_A |
| 717 | //sys Unshare(flags int) (err error) = SYS_UNSHARE |
| 718 | |
| 719 | func Ptsname(fd int) (name string, err error) { |
| 720 | runtime.EnterSyscall() |
| 721 | r0, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___PTSNAME_A<<4, uintptr(fd)) |
| 722 | runtime.ExitSyscall() |
| 723 | if r0 == 0 { |
| 724 | err = errnoErr2(e1, e2) |
| 725 | } else { |
| 726 | name = u2s(unsafe.Pointer(r0)) |
| 727 | } |
| 728 | return |
| 729 | } |
| 730 | |
| 731 | func u2s(cstr unsafe.Pointer) string { |
| 732 | str := (*[1024]uint8)(cstr) |
| 733 | i := 0 |
| 734 | for str[i] != 0 { |
| 735 | i++ |
| 736 | } |
| 737 | return string(str[:i]) |
| 738 | } |
| 739 | |
| 740 | func Close(fd int) (err error) { |
| 741 | runtime.EnterSyscall() |
| 742 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSE<<4, uintptr(fd)) |
| 743 | runtime.ExitSyscall() |
| 744 | for i := 0; e1 == EAGAIN && i < 10; i++ { |
| 745 | runtime.EnterSyscall() |
| 746 | CallLeFuncWithErr(GetZosLibVec()+SYS_USLEEP<<4, uintptr(10)) |
| 747 | runtime.ExitSyscall() |
| 748 | runtime.EnterSyscall() |
| 749 | r0, e2, e1 = CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSE<<4, uintptr(fd)) |
| 750 | runtime.ExitSyscall() |
| 751 | } |
| 752 | if r0 != 0 { |
| 753 | err = errnoErr2(e1, e2) |
| 754 | } |
| 755 | return |
| 756 | } |
| 757 | |
| 758 | // Dummy function: there are no semantics for Madvise on z/OS |
| 759 | func Madvise(b []byte, advice int) (err error) { |
| 760 | return |
| 761 | } |
| 762 | |
| 763 | func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { |
| 764 | return mapper.Mmap(fd, offset, length, prot, flags) |
| 765 | } |
| 766 | |
| 767 | func Munmap(b []byte) (err error) { |
| 768 | return mapper.Munmap(b) |
| 769 | } |
| 770 | |
| 771 | func MmapPtr(fd int, offset int64, addr unsafe.Pointer, length uintptr, prot int, flags int) (ret unsafe.Pointer, err error) { |
| 772 | xaddr, err := mapper.mmap(uintptr(addr), length, prot, flags, fd, offset) |
| 773 | return unsafe.Pointer(xaddr), err |
| 774 | } |
| 775 | |
| 776 | func MunmapPtr(addr unsafe.Pointer, length uintptr) (err error) { |
| 777 | return mapper.munmap(uintptr(addr), length) |
| 778 | } |
| 779 | |
| 780 | //sys Gethostname(buf []byte) (err error) = SYS___GETHOSTNAME_A |
| 781 | //sysnb Getgid() (gid int) |
| 782 | //sysnb Getpid() (pid int) |
| 783 | //sysnb Getpgid(pid int) (pgid int, err error) = SYS_GETPGID |
| 784 | |
| 785 | func Getpgrp() (pid int) { |
| 786 | pid, _ = Getpgid(0) |
| 787 | return |
| 788 | } |
| 789 | |
| 790 | //sysnb Getppid() (pid int) |
| 791 | //sys Getpriority(which int, who int) (prio int, err error) |
| 792 | //sysnb Getrlimit(resource int, rlim *Rlimit) (err error) = SYS_GETRLIMIT |
| 793 | |
| 794 | //sysnb getrusage(who int, rusage *rusage_zos) (err error) = SYS_GETRUSAGE |
| 795 | |
| 796 | func Getrusage(who int, rusage *Rusage) (err error) { |
| 797 | var ruz rusage_zos |
| 798 | err = getrusage(who, &ruz) |
| 799 | //Only the first two fields of Rusage are set |
| 800 | rusage.Utime.Sec = ruz.Utime.Sec |
| 801 | rusage.Utime.Usec = int64(ruz.Utime.Usec) |
| 802 | rusage.Stime.Sec = ruz.Stime.Sec |
| 803 | rusage.Stime.Usec = int64(ruz.Stime.Usec) |
| 804 | return |
| 805 | } |
| 806 | |
| 807 | //sys Getegid() (egid int) = SYS_GETEGID |
| 808 | //sys Geteuid() (euid int) = SYS_GETEUID |
| 809 | //sysnb Getsid(pid int) (sid int, err error) = SYS_GETSID |
| 810 | //sysnb Getuid() (uid int) |
| 811 | //sysnb Kill(pid int, sig Signal) (err error) |
| 812 | //sys Lchown(path string, uid int, gid int) (err error) = SYS___LCHOWN_A |
| 813 | //sys Link(path string, link string) (err error) = SYS___LINK_A |
| 814 | //sys Linkat(oldDirFd int, oldPath string, newDirFd int, newPath string, flags int) (err error) = SYS___LINKAT_A |
| 815 | //sys Listen(s int, n int) (err error) |
| 816 | //sys lstat(path string, stat *Stat_LE_t) (err error) = SYS___LSTAT_A |
| 817 | |
| 818 | func Lstat(path string, stat *Stat_t) (err error) { |
| 819 | var statLE Stat_LE_t |
| 820 | err = lstat(path, &statLE) |
| 821 | copyStat(stat, &statLE) |
| 822 | return |
| 823 | } |
| 824 | |
| 825 | // for checking symlinks begins with $VERSION/ $SYSNAME/ $SYSSYMR/ $SYSSYMA/ |
| 826 | func isSpecialPath(path []byte) (v bool) { |
| 827 | var special = [4][8]byte{ |
| 828 | {'V', 'E', 'R', 'S', 'I', 'O', 'N', '/'}, |
| 829 | {'S', 'Y', 'S', 'N', 'A', 'M', 'E', '/'}, |
| 830 | {'S', 'Y', 'S', 'S', 'Y', 'M', 'R', '/'}, |
| 831 | {'S', 'Y', 'S', 'S', 'Y', 'M', 'A', '/'}} |
| 832 | |
| 833 | var i, j int |
| 834 | for i = 0; i < len(special); i++ { |
| 835 | for j = 0; j < len(special[i]); j++ { |
| 836 | if path[j] != special[i][j] { |
| 837 | break |
| 838 | } |
| 839 | } |
| 840 | if j == len(special[i]) { |
| 841 | return true |
| 842 | } |
| 843 | } |
| 844 | return false |
| 845 | } |
| 846 | |
| 847 | func realpath(srcpath string, abspath []byte) (pathlen int, errno int) { |
| 848 | var source [1024]byte |
| 849 | copy(source[:], srcpath) |
| 850 | source[len(srcpath)] = 0 |
| 851 | ret := runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___REALPATH_A<<4, //__realpath_a() |
| 852 | []uintptr{uintptr(unsafe.Pointer(&source[0])), |
| 853 | uintptr(unsafe.Pointer(&abspath[0]))}) |
| 854 | if ret != 0 { |
| 855 | index := bytes.IndexByte(abspath[:], byte(0)) |
| 856 | if index != -1 { |
| 857 | return index, 0 |
| 858 | } |
| 859 | } else { |
| 860 | errptr := (*int)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, []uintptr{}))) //__errno() |
| 861 | return 0, *errptr |
| 862 | } |
| 863 | return 0, 245 // EBADDATA 245 |
| 864 | } |
| 865 | |
| 866 | func Readlink(path string, buf []byte) (n int, err error) { |
| 867 | var _p0 *byte |
| 868 | _p0, err = BytePtrFromString(path) |
| 869 | if err != nil { |
| 870 | return |
| 871 | } |
| 872 | var _p1 unsafe.Pointer |
| 873 | if len(buf) > 0 { |
| 874 | _p1 = unsafe.Pointer(&buf[0]) |
| 875 | } else { |
| 876 | _p1 = unsafe.Pointer(&_zero) |
| 877 | } |
| 878 | n = int(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___READLINK_A<<4, |
| 879 | []uintptr{uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf))})) |
| 880 | runtime.KeepAlive(unsafe.Pointer(_p0)) |
| 881 | if n == -1 { |
| 882 | value := *(*int32)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, []uintptr{}))) |
| 883 | err = errnoErr(Errno(value)) |
| 884 | } else { |
| 885 | if buf[0] == '$' { |
| 886 | if isSpecialPath(buf[1:9]) { |
| 887 | cnt, err1 := realpath(path, buf) |
| 888 | if err1 == 0 { |
| 889 | n = cnt |
| 890 | } |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | return |
| 895 | } |
| 896 | |
| 897 | func impl_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) { |
| 898 | var _p0 *byte |
| 899 | _p0, err = BytePtrFromString(path) |
| 900 | if err != nil { |
| 901 | return |
| 902 | } |
| 903 | var _p1 unsafe.Pointer |
| 904 | if len(buf) > 0 { |
| 905 | _p1 = unsafe.Pointer(&buf[0]) |
| 906 | } else { |
| 907 | _p1 = unsafe.Pointer(&_zero) |
| 908 | } |
| 909 | runtime.EnterSyscall() |
| 910 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___READLINKAT_A<<4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf))) |
| 911 | runtime.ExitSyscall() |
| 912 | n = int(r0) |
| 913 | if int64(r0) == -1 { |
| 914 | err = errnoErr2(e1, e2) |
| 915 | return n, err |
| 916 | } else { |
| 917 | if buf[0] == '$' { |
| 918 | if isSpecialPath(buf[1:9]) { |
| 919 | cnt, err1 := realpath(path, buf) |
| 920 | if err1 == 0 { |
| 921 | n = cnt |
| 922 | } |
| 923 | } |
| 924 | } |
| 925 | } |
| 926 | return |
| 927 | } |
| 928 | |
| 929 | //go:nosplit |
| 930 | func get_ReadlinkatAddr() *(func(dirfd int, path string, buf []byte) (n int, err error)) |
| 931 | |
| 932 | var Readlinkat = enter_Readlinkat |
| 933 | |
| 934 | func enter_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) { |
| 935 | funcref := get_ReadlinkatAddr() |
| 936 | if funcptrtest(GetZosLibVec()+SYS___READLINKAT_A<<4, "") == 0 { |
| 937 | *funcref = impl_Readlinkat |
| 938 | } else { |
| 939 | *funcref = error_Readlinkat |
| 940 | } |
| 941 | return (*funcref)(dirfd, path, buf) |
| 942 | } |
| 943 | |
| 944 | func error_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) { |
| 945 | n = -1 |
| 946 | err = ENOSYS |
| 947 | return |
| 948 | } |
| 949 | |
| 950 | //sys Mkdir(path string, mode uint32) (err error) = SYS___MKDIR_A |
| 951 | //sys Mkdirat(dirfd int, path string, mode uint32) (err error) = SYS___MKDIRAT_A |
| 952 | //sys Mkfifo(path string, mode uint32) (err error) = SYS___MKFIFO_A |
| 953 | //sys Mknod(path string, mode uint32, dev int) (err error) = SYS___MKNOD_A |
| 954 | //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) = SYS___MKNODAT_A |
| 955 | //sys PivotRoot(newroot string, oldroot string) (err error) = SYS___PIVOT_ROOT_A |
| 956 | //sys Pread(fd int, p []byte, offset int64) (n int, err error) |
| 957 | //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) |
| 958 | //sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) = SYS___PRCTL_A |
| 959 | //sysnb Prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT |
| 960 | //sys Rename(from string, to string) (err error) = SYS___RENAME_A |
| 961 | //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) = SYS___RENAMEAT_A |
| 962 | //sys Renameat2(olddirfd int, oldpath string, newdirfd int, newpath string, flags uint) (err error) = SYS___RENAMEAT2_A |
| 963 | //sys Rmdir(path string) (err error) = SYS___RMDIR_A |
| 964 | //sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK |
| 965 | //sys Setegid(egid int) (err error) = SYS_SETEGID |
| 966 | //sys Seteuid(euid int) (err error) = SYS_SETEUID |
| 967 | //sys Sethostname(p []byte) (err error) = SYS___SETHOSTNAME_A |
| 968 | //sys Setns(fd int, nstype int) (err error) = SYS_SETNS |
| 969 | //sys Setpriority(which int, who int, prio int) (err error) |
| 970 | //sysnb Setpgid(pid int, pgid int) (err error) = SYS_SETPGID |
| 971 | //sysnb Setrlimit(resource int, lim *Rlimit) (err error) |
| 972 | //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID |
| 973 | //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID |
| 974 | //sysnb Setsid() (pid int, err error) = SYS_SETSID |
| 975 | //sys Setuid(uid int) (err error) = SYS_SETUID |
| 976 | //sys Setgid(uid int) (err error) = SYS_SETGID |
| 977 | //sys Shutdown(fd int, how int) (err error) |
| 978 | //sys stat(path string, statLE *Stat_LE_t) (err error) = SYS___STAT_A |
| 979 | |
| 980 | func Stat(path string, sta *Stat_t) (err error) { |
| 981 | var statLE Stat_LE_t |
| 982 | err = stat(path, &statLE) |
| 983 | copyStat(sta, &statLE) |
| 984 | return |
| 985 | } |
| 986 | |
| 987 | //sys Symlink(path string, link string) (err error) = SYS___SYMLINK_A |
| 988 | //sys Symlinkat(oldPath string, dirfd int, newPath string) (err error) = SYS___SYMLINKAT_A |
| 989 | //sys Sync() = SYS_SYNC |
| 990 | //sys Truncate(path string, length int64) (err error) = SYS___TRUNCATE_A |
| 991 | //sys Tcgetattr(fildes int, termptr *Termios) (err error) = SYS_TCGETATTR |
| 992 | //sys Tcsetattr(fildes int, when int, termptr *Termios) (err error) = SYS_TCSETATTR |
| 993 | //sys Umask(mask int) (oldmask int) |
| 994 | //sys Unlink(path string) (err error) = SYS___UNLINK_A |
| 995 | //sys Unlinkat(dirfd int, path string, flags int) (err error) = SYS___UNLINKAT_A |
| 996 | //sys Utime(path string, utim *Utimbuf) (err error) = SYS___UTIME_A |
| 997 | |
| 998 | //sys open(path string, mode int, perm uint32) (fd int, err error) = SYS___OPEN_A |
| 999 | |
| 1000 | func Open(path string, mode int, perm uint32) (fd int, err error) { |
| 1001 | if mode&O_ACCMODE == 0 { |
| 1002 | mode |= O_RDONLY |
| 1003 | } |
| 1004 | return open(path, mode, perm) |
| 1005 | } |
| 1006 | |
| 1007 | //sys openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) = SYS___OPENAT_A |
| 1008 | |
| 1009 | func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) { |
| 1010 | if flags&O_ACCMODE == 0 { |
| 1011 | flags |= O_RDONLY |
| 1012 | } |
| 1013 | return openat(dirfd, path, flags, mode) |
| 1014 | } |
| 1015 | |
| 1016 | //sys openat2(dirfd int, path string, open_how *OpenHow, size int) (fd int, err error) = SYS___OPENAT2_A |
| 1017 | |
| 1018 | func Openat2(dirfd int, path string, how *OpenHow) (fd int, err error) { |
| 1019 | if how.Flags&O_ACCMODE == 0 { |
| 1020 | how.Flags |= O_RDONLY |
| 1021 | } |
| 1022 | return openat2(dirfd, path, how, SizeofOpenHow) |
| 1023 | } |
| 1024 | |
| 1025 | func ZosFdToPath(dirfd int) (path string, err error) { |
| 1026 | var buffer [1024]byte |
| 1027 | runtime.EnterSyscall() |
| 1028 | ret, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_W_IOCTL<<4, uintptr(dirfd), 17, 1024, uintptr(unsafe.Pointer(&buffer[0]))) |
| 1029 | runtime.ExitSyscall() |
| 1030 | if ret == 0 { |
| 1031 | zb := bytes.IndexByte(buffer[:], 0) |
| 1032 | if zb == -1 { |
| 1033 | zb = len(buffer) |
| 1034 | } |
| 1035 | CallLeFuncWithErr(GetZosLibVec()+SYS___E2A_L<<4, uintptr(unsafe.Pointer(&buffer[0])), uintptr(zb)) |
| 1036 | return string(buffer[:zb]), nil |
| 1037 | } |
| 1038 | return "", errnoErr2(e1, e2) |
| 1039 | } |
| 1040 | |
| 1041 | //sys remove(path string) (err error) |
| 1042 | |
| 1043 | func Remove(path string) error { |
| 1044 | return remove(path) |
| 1045 | } |
| 1046 | |
| 1047 | const ImplementsGetwd = true |
| 1048 | |
| 1049 | func Getcwd(buf []byte) (n int, err error) { |
| 1050 | var p unsafe.Pointer |
| 1051 | if len(buf) > 0 { |
| 1052 | p = unsafe.Pointer(&buf[0]) |
| 1053 | } else { |
| 1054 | p = unsafe.Pointer(&_zero) |
| 1055 | } |
| 1056 | runtime.EnterSyscall() |
| 1057 | r0, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___GETCWD_A<<4, uintptr(p), uintptr(len(buf))) |
| 1058 | runtime.ExitSyscall() |
| 1059 | n = clen(buf) + 1 |
| 1060 | if r0 == 0 { |
| 1061 | err = errnoErr2(e1, e2) |
| 1062 | } |
| 1063 | return |
| 1064 | } |
| 1065 | |
| 1066 | func Getwd() (wd string, err error) { |
| 1067 | var buf [PathMax]byte |
| 1068 | n, err := Getcwd(buf[0:]) |
| 1069 | if err != nil { |
| 1070 | return "", err |
| 1071 | } |
| 1072 | // Getcwd returns the number of bytes written to buf, including the NUL. |
| 1073 | if n < 1 || n > len(buf) || buf[n-1] != 0 { |
| 1074 | return "", EINVAL |
| 1075 | } |
| 1076 | return string(buf[0 : n-1]), nil |
| 1077 | } |
| 1078 | |
| 1079 | func Getgroups() (gids []int, err error) { |
| 1080 | n, err := getgroups(0, nil) |
| 1081 | if err != nil { |
| 1082 | return nil, err |
| 1083 | } |
| 1084 | if n == 0 { |
| 1085 | return nil, nil |
| 1086 | } |
| 1087 | |
| 1088 | // Sanity check group count. Max is 1<<16 on Linux. |
| 1089 | if n < 0 || n > 1<<20 { |
| 1090 | return nil, EINVAL |
| 1091 | } |
| 1092 | |
| 1093 | a := make([]_Gid_t, n) |
| 1094 | n, err = getgroups(n, &a[0]) |
| 1095 | if err != nil { |
| 1096 | return nil, err |
| 1097 | } |
| 1098 | gids = make([]int, n) |
| 1099 | for i, v := range a[0:n] { |
| 1100 | gids[i] = int(v) |
| 1101 | } |
| 1102 | return |
| 1103 | } |
| 1104 | |
| 1105 | func Setgroups(gids []int) (err error) { |
| 1106 | if len(gids) == 0 { |
| 1107 | return setgroups(0, nil) |
| 1108 | } |
| 1109 | |
| 1110 | a := make([]_Gid_t, len(gids)) |
| 1111 | for i, v := range gids { |
| 1112 | a[i] = _Gid_t(v) |
| 1113 | } |
| 1114 | return setgroups(len(a), &a[0]) |
| 1115 | } |
| 1116 | |
| 1117 | func gettid() uint64 |
| 1118 | |
| 1119 | func Gettid() (tid int) { |
| 1120 | return int(gettid()) |
| 1121 | } |
| 1122 | |
| 1123 | type WaitStatus uint32 |
| 1124 | |
| 1125 | // Wait status is 7 bits at bottom, either 0 (exited), |
| 1126 | // 0x7F (stopped), or a signal number that caused an exit. |
| 1127 | // The 0x80 bit is whether there was a core dump. |
| 1128 | // An extra number (exit code, signal causing a stop) |
| 1129 | // is in the high bits. At least that's the idea. |
| 1130 | // There are various irregularities. For example, the |
| 1131 | // "continued" status is 0xFFFF, distinguishing itself |
| 1132 | // from stopped via the core dump bit. |
| 1133 | |
| 1134 | const ( |
| 1135 | mask = 0x7F |
| 1136 | core = 0x80 |
| 1137 | exited = 0x00 |
| 1138 | stopped = 0x7F |
| 1139 | shift = 8 |
| 1140 | ) |
| 1141 | |
| 1142 | func (w WaitStatus) Exited() bool { return w&mask == exited } |
| 1143 | |
| 1144 | func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != exited } |
| 1145 | |
| 1146 | func (w WaitStatus) Stopped() bool { return w&0xFF == stopped } |
| 1147 | |
| 1148 | func (w WaitStatus) Continued() bool { return w == 0xFFFF } |
| 1149 | |
| 1150 | func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 } |
| 1151 | |
| 1152 | func (w WaitStatus) ExitStatus() int { |
| 1153 | if !w.Exited() { |
| 1154 | return -1 |
| 1155 | } |
| 1156 | return int(w>>shift) & 0xFF |
| 1157 | } |
| 1158 | |
| 1159 | func (w WaitStatus) Signal() Signal { |
| 1160 | if !w.Signaled() { |
| 1161 | return -1 |
| 1162 | } |
| 1163 | return Signal(w & mask) |
| 1164 | } |
| 1165 | |
| 1166 | func (w WaitStatus) StopSignal() Signal { |
| 1167 | if !w.Stopped() { |
| 1168 | return -1 |
| 1169 | } |
| 1170 | return Signal(w>>shift) & 0xFF |
| 1171 | } |
| 1172 | |
| 1173 | func (w WaitStatus) TrapCause() int { return -1 } |
| 1174 | |
| 1175 | //sys waitid(idType int, id int, info *Siginfo, options int) (err error) |
| 1176 | |
| 1177 | func Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error) { |
| 1178 | return waitid(idType, id, info, options) |
| 1179 | } |
| 1180 | |
| 1181 | //sys waitpid(pid int, wstatus *_C_int, options int) (wpid int, err error) |
| 1182 | |
| 1183 | func impl_Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { |
| 1184 | runtime.EnterSyscall() |
| 1185 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_WAIT4<<4, uintptr(pid), uintptr(unsafe.Pointer(wstatus)), uintptr(options), uintptr(unsafe.Pointer(rusage))) |
| 1186 | runtime.ExitSyscall() |
| 1187 | wpid = int(r0) |
| 1188 | if int64(r0) == -1 { |
| 1189 | err = errnoErr2(e1, e2) |
| 1190 | } |
| 1191 | return |
| 1192 | } |
| 1193 | |
| 1194 | //go:nosplit |
| 1195 | func get_Wait4Addr() *(func(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error)) |
| 1196 | |
| 1197 | var Wait4 = enter_Wait4 |
| 1198 | |
| 1199 | func enter_Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { |
| 1200 | funcref := get_Wait4Addr() |
| 1201 | if funcptrtest(GetZosLibVec()+SYS_WAIT4<<4, "") == 0 { |
| 1202 | *funcref = impl_Wait4 |
| 1203 | } else { |
| 1204 | *funcref = legacyWait4 |
| 1205 | } |
| 1206 | return (*funcref)(pid, wstatus, options, rusage) |
| 1207 | } |
| 1208 | |
| 1209 | func legacyWait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { |
| 1210 | // TODO(mundaym): z/OS doesn't have wait4. I don't think getrusage does what we want. |
| 1211 | // At the moment rusage will not be touched. |
| 1212 | var status _C_int |
| 1213 | wpid, err = waitpid(pid, &status, options) |
| 1214 | if wstatus != nil { |
| 1215 | *wstatus = WaitStatus(status) |
| 1216 | } |
| 1217 | return |
| 1218 | } |
| 1219 | |
| 1220 | //sysnb gettimeofday(tv *timeval_zos) (err error) |
| 1221 | |
| 1222 | func Gettimeofday(tv *Timeval) (err error) { |
| 1223 | var tvz timeval_zos |
| 1224 | err = gettimeofday(&tvz) |
| 1225 | tv.Sec = tvz.Sec |
| 1226 | tv.Usec = int64(tvz.Usec) |
| 1227 | return |
| 1228 | } |
| 1229 | |
| 1230 | func Time(t *Time_t) (tt Time_t, err error) { |
| 1231 | var tv Timeval |
| 1232 | err = Gettimeofday(&tv) |
| 1233 | if err != nil { |
| 1234 | return 0, err |
| 1235 | } |
| 1236 | if t != nil { |
| 1237 | *t = Time_t(tv.Sec) |
| 1238 | } |
| 1239 | return Time_t(tv.Sec), nil |
| 1240 | } |
| 1241 | |
| 1242 | func setTimespec(sec, nsec int64) Timespec { |
| 1243 | return Timespec{Sec: sec, Nsec: nsec} |
| 1244 | } |
| 1245 | |
| 1246 | func setTimeval(sec, usec int64) Timeval { //fix |
| 1247 | return Timeval{Sec: sec, Usec: usec} |
| 1248 | } |
| 1249 | |
| 1250 | //sysnb pipe(p *[2]_C_int) (err error) |
| 1251 | |
| 1252 | func Pipe(p []int) (err error) { |
| 1253 | if len(p) != 2 { |
| 1254 | return EINVAL |
| 1255 | } |
| 1256 | var pp [2]_C_int |
| 1257 | err = pipe(&pp) |
| 1258 | p[0] = int(pp[0]) |
| 1259 | p[1] = int(pp[1]) |
| 1260 | return |
| 1261 | } |
| 1262 | |
| 1263 | //sys utimes(path string, timeval *[2]Timeval) (err error) = SYS___UTIMES_A |
| 1264 | |
| 1265 | func Utimes(path string, tv []Timeval) (err error) { |
| 1266 | if tv == nil { |
| 1267 | return utimes(path, nil) |
| 1268 | } |
| 1269 | if len(tv) != 2 { |
| 1270 | return EINVAL |
| 1271 | } |
| 1272 | return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) |
| 1273 | } |
| 1274 | |
| 1275 | //sys utimensat(dirfd int, path string, ts *[2]Timespec, flags int) (err error) = SYS___UTIMENSAT_A |
| 1276 | |
| 1277 | func validUtimensat() bool { |
| 1278 | if funcptrtest(GetZosLibVec()+SYS___UTIMENSAT_A<<4, "") == 0 { |
| 1279 | if name, err := getLeFuncName(GetZosLibVec() + SYS___UTIMENSAT_A<<4); err == nil { |
| 1280 | return name == "__utimensat_a" |
| 1281 | } |
| 1282 | } |
| 1283 | return false |
| 1284 | } |
| 1285 | |
| 1286 | // Begin UtimesNano |
| 1287 | |
| 1288 | //go:nosplit |
| 1289 | func get_UtimesNanoAddr() *(func(path string, ts []Timespec) (err error)) |
| 1290 | |
| 1291 | var UtimesNano = enter_UtimesNano |
| 1292 | |
| 1293 | func enter_UtimesNano(path string, ts []Timespec) (err error) { |
| 1294 | funcref := get_UtimesNanoAddr() |
| 1295 | if validUtimensat() { |
| 1296 | *funcref = utimesNanoImpl |
| 1297 | } else { |
| 1298 | *funcref = legacyUtimesNano |
| 1299 | } |
| 1300 | return (*funcref)(path, ts) |
| 1301 | } |
| 1302 | |
| 1303 | func utimesNanoImpl(path string, ts []Timespec) (err error) { |
| 1304 | if ts == nil { |
| 1305 | return utimensat(AT_FDCWD, path, nil, 0) |
| 1306 | } |
| 1307 | if len(ts) != 2 { |
| 1308 | return EINVAL |
| 1309 | } |
| 1310 | return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) |
| 1311 | } |
| 1312 | |
| 1313 | func legacyUtimesNano(path string, ts []Timespec) (err error) { |
| 1314 | if len(ts) != 2 { |
| 1315 | return EINVAL |
| 1316 | } |
| 1317 | // Not as efficient as it could be because Timespec and |
| 1318 | // Timeval have different types in the different OSes |
| 1319 | tv := [2]Timeval{ |
| 1320 | NsecToTimeval(TimespecToNsec(ts[0])), |
| 1321 | NsecToTimeval(TimespecToNsec(ts[1])), |
| 1322 | } |
| 1323 | return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) |
| 1324 | } |
| 1325 | |
| 1326 | // End UtimesNano |
| 1327 | |
| 1328 | // Begin UtimesNanoAt |
| 1329 | |
| 1330 | //go:nosplit |
| 1331 | func get_UtimesNanoAtAddr() *(func(dirfd int, path string, ts []Timespec, flags int) (err error)) |
| 1332 | |
| 1333 | var UtimesNanoAt = enter_UtimesNanoAt |
| 1334 | |
| 1335 | func enter_UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) (err error) { |
| 1336 | funcref := get_UtimesNanoAtAddr() |
| 1337 | if validUtimensat() { |
| 1338 | *funcref = utimesNanoAtImpl |
| 1339 | } else { |
| 1340 | *funcref = legacyUtimesNanoAt |
| 1341 | } |
| 1342 | return (*funcref)(dirfd, path, ts, flags) |
| 1343 | } |
| 1344 | |
| 1345 | func utimesNanoAtImpl(dirfd int, path string, ts []Timespec, flags int) (err error) { |
| 1346 | if ts == nil { |
| 1347 | return utimensat(dirfd, path, nil, flags) |
| 1348 | } |
| 1349 | if len(ts) != 2 { |
| 1350 | return EINVAL |
| 1351 | } |
| 1352 | return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags) |
| 1353 | } |
| 1354 | |
| 1355 | func legacyUtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) (err error) { |
| 1356 | if path[0] != '/' { |
| 1357 | dirPath, err := ZosFdToPath(dirfd) |
| 1358 | if err != nil { |
| 1359 | return err |
| 1360 | } |
| 1361 | path = dirPath + "/" + path |
| 1362 | } |
| 1363 | if flags == AT_SYMLINK_NOFOLLOW { |
| 1364 | if len(ts) != 2 { |
| 1365 | return EINVAL |
| 1366 | } |
| 1367 | |
| 1368 | if ts[0].Nsec >= 5e8 { |
| 1369 | ts[0].Sec++ |
| 1370 | } |
| 1371 | ts[0].Nsec = 0 |
| 1372 | if ts[1].Nsec >= 5e8 { |
| 1373 | ts[1].Sec++ |
| 1374 | } |
| 1375 | ts[1].Nsec = 0 |
| 1376 | |
| 1377 | // Not as efficient as it could be because Timespec and |
| 1378 | // Timeval have different types in the different OSes |
| 1379 | tv := []Timeval{ |
| 1380 | NsecToTimeval(TimespecToNsec(ts[0])), |
| 1381 | NsecToTimeval(TimespecToNsec(ts[1])), |
| 1382 | } |
| 1383 | return Lutimes(path, tv) |
| 1384 | } |
| 1385 | return UtimesNano(path, ts) |
| 1386 | } |
| 1387 | |
| 1388 | // End UtimesNanoAt |
| 1389 | |
| 1390 | func Getsockname(fd int) (sa Sockaddr, err error) { |
| 1391 | var rsa RawSockaddrAny |
| 1392 | var len _Socklen = SizeofSockaddrAny |
| 1393 | if err = getsockname(fd, &rsa, &len); err != nil { |
| 1394 | return |
| 1395 | } |
| 1396 | // TODO(neeilan) : Remove this 0 ( added to get sys/unix compiling on z/OS ) |
| 1397 | return anyToSockaddr(0, &rsa) |
| 1398 | } |
| 1399 | |
| 1400 | const ( |
| 1401 | // identifier constants |
| 1402 | nwmHeaderIdentifier = 0xd5e6d4c8 |
| 1403 | nwmFilterIdentifier = 0xd5e6d4c6 |
| 1404 | nwmTCPConnIdentifier = 0xd5e6d4c3 |
| 1405 | nwmRecHeaderIdentifier = 0xd5e6d4d9 |
| 1406 | nwmIPStatsIdentifier = 0xd5e6d4c9d7e2e340 |
| 1407 | nwmIPGStatsIdentifier = 0xd5e6d4c9d7c7e2e3 |
| 1408 | nwmTCPStatsIdentifier = 0xd5e6d4e3c3d7e2e3 |
| 1409 | nwmUDPStatsIdentifier = 0xd5e6d4e4c4d7e2e3 |
| 1410 | nwmICMPGStatsEntry = 0xd5e6d4c9c3d4d7c7 |
| 1411 | nwmICMPTStatsEntry = 0xd5e6d4c9c3d4d7e3 |
| 1412 | |
| 1413 | // nwmHeader constants |
| 1414 | nwmVersion1 = 1 |
| 1415 | nwmVersion2 = 2 |
| 1416 | nwmCurrentVer = 2 |
| 1417 | |
| 1418 | nwmTCPConnType = 1 |
| 1419 | nwmGlobalStatsType = 14 |
| 1420 | |
| 1421 | // nwmFilter constants |
| 1422 | nwmFilterLclAddrMask = 0x20000000 // Local address |
| 1423 | nwmFilterSrcAddrMask = 0x20000000 // Source address |
| 1424 | nwmFilterLclPortMask = 0x10000000 // Local port |
| 1425 | nwmFilterSrcPortMask = 0x10000000 // Source port |
| 1426 | |
| 1427 | // nwmConnEntry constants |
| 1428 | nwmTCPStateClosed = 1 |
| 1429 | nwmTCPStateListen = 2 |
| 1430 | nwmTCPStateSynSent = 3 |
| 1431 | nwmTCPStateSynRcvd = 4 |
| 1432 | nwmTCPStateEstab = 5 |
| 1433 | nwmTCPStateFinWait1 = 6 |
| 1434 | nwmTCPStateFinWait2 = 7 |
| 1435 | nwmTCPStateClosWait = 8 |
| 1436 | nwmTCPStateLastAck = 9 |
| 1437 | nwmTCPStateClosing = 10 |
| 1438 | nwmTCPStateTimeWait = 11 |
| 1439 | nwmTCPStateDeletTCB = 12 |
| 1440 | |
| 1441 | // Existing constants on linux |
| 1442 | BPF_TCP_CLOSE = 1 |
| 1443 | BPF_TCP_LISTEN = 2 |
| 1444 | BPF_TCP_SYN_SENT = 3 |
| 1445 | BPF_TCP_SYN_RECV = 4 |
| 1446 | BPF_TCP_ESTABLISHED = 5 |
| 1447 | BPF_TCP_FIN_WAIT1 = 6 |
| 1448 | BPF_TCP_FIN_WAIT2 = 7 |
| 1449 | BPF_TCP_CLOSE_WAIT = 8 |
| 1450 | BPF_TCP_LAST_ACK = 9 |
| 1451 | BPF_TCP_CLOSING = 10 |
| 1452 | BPF_TCP_TIME_WAIT = 11 |
| 1453 | BPF_TCP_NEW_SYN_RECV = -1 |
| 1454 | BPF_TCP_MAX_STATES = -2 |
| 1455 | ) |
| 1456 | |
| 1457 | type nwmTriplet struct { |
| 1458 | offset uint32 |
| 1459 | length uint32 |
| 1460 | number uint32 |
| 1461 | } |
| 1462 | |
| 1463 | type nwmQuadruplet struct { |
| 1464 | offset uint32 |
| 1465 | length uint32 |
| 1466 | number uint32 |
| 1467 | match uint32 |
| 1468 | } |
| 1469 | |
| 1470 | type nwmHeader struct { |
| 1471 | ident uint32 |
| 1472 | length uint32 |
| 1473 | version uint16 |
| 1474 | nwmType uint16 |
| 1475 | bytesNeeded uint32 |
| 1476 | options uint32 |
| 1477 | _ [16]byte |
| 1478 | inputDesc nwmTriplet |
| 1479 | outputDesc nwmQuadruplet |
| 1480 | } |
| 1481 | |
| 1482 | type nwmFilter struct { |
| 1483 | ident uint32 |
| 1484 | flags uint32 |
| 1485 | resourceName [8]byte |
| 1486 | resourceId uint32 |
| 1487 | listenerId uint32 |
| 1488 | local [28]byte // union of sockaddr4 and sockaddr6 |
| 1489 | remote [28]byte // union of sockaddr4 and sockaddr6 |
| 1490 | _ uint16 |
| 1491 | _ uint16 |
| 1492 | asid uint16 |
| 1493 | _ [2]byte |
| 1494 | tnLuName [8]byte |
| 1495 | tnMonGrp uint32 |
| 1496 | tnAppl [8]byte |
| 1497 | applData [40]byte |
| 1498 | nInterface [16]byte |
| 1499 | dVipa [16]byte |
| 1500 | dVipaPfx uint16 |
| 1501 | dVipaPort uint16 |
| 1502 | dVipaFamily byte |
| 1503 | _ [3]byte |
| 1504 | destXCF [16]byte |
| 1505 | destXCFPfx uint16 |
| 1506 | destXCFFamily byte |
| 1507 | _ [1]byte |
| 1508 | targIP [16]byte |
| 1509 | targIPPfx uint16 |
| 1510 | targIPFamily byte |
| 1511 | _ [1]byte |
| 1512 | _ [20]byte |
| 1513 | } |
| 1514 | |
| 1515 | type nwmRecHeader struct { |
| 1516 | ident uint32 |
| 1517 | length uint32 |
| 1518 | number byte |
| 1519 | _ [3]byte |
| 1520 | } |
| 1521 | |
| 1522 | type nwmTCPStatsEntry struct { |
| 1523 | ident uint64 |
| 1524 | currEstab uint32 |
| 1525 | activeOpened uint32 |
| 1526 | passiveOpened uint32 |
| 1527 | connClosed uint32 |
| 1528 | estabResets uint32 |
| 1529 | attemptFails uint32 |
| 1530 | passiveDrops uint32 |
| 1531 | timeWaitReused uint32 |
| 1532 | inSegs uint64 |
| 1533 | predictAck uint32 |
| 1534 | predictData uint32 |
| 1535 | inDupAck uint32 |
| 1536 | inBadSum uint32 |
| 1537 | inBadLen uint32 |
| 1538 | inShort uint32 |
| 1539 | inDiscOldTime uint32 |
| 1540 | inAllBeforeWin uint32 |
| 1541 | inSomeBeforeWin uint32 |
| 1542 | inAllAfterWin uint32 |
| 1543 | inSomeAfterWin uint32 |
| 1544 | inOutOfOrder uint32 |
| 1545 | inAfterClose uint32 |
| 1546 | inWinProbes uint32 |
| 1547 | inWinUpdates uint32 |
| 1548 | outWinUpdates uint32 |
| 1549 | outSegs uint64 |
| 1550 | outDelayAcks uint32 |
| 1551 | outRsts uint32 |
| 1552 | retransSegs uint32 |
| 1553 | retransTimeouts uint32 |
| 1554 | retransDrops uint32 |
| 1555 | pmtuRetrans uint32 |
| 1556 | pmtuErrors uint32 |
| 1557 | outWinProbes uint32 |
| 1558 | probeDrops uint32 |
| 1559 | keepAliveProbes uint32 |
| 1560 | keepAliveDrops uint32 |
| 1561 | finwait2Drops uint32 |
| 1562 | acceptCount uint64 |
| 1563 | inBulkQSegs uint64 |
| 1564 | inDiscards uint64 |
| 1565 | connFloods uint32 |
| 1566 | connStalls uint32 |
| 1567 | cfgEphemDef uint16 |
| 1568 | ephemInUse uint16 |
| 1569 | ephemHiWater uint16 |
| 1570 | flags byte |
| 1571 | _ [1]byte |
| 1572 | ephemExhaust uint32 |
| 1573 | smcRCurrEstabLnks uint32 |
| 1574 | smcRLnkActTimeOut uint32 |
| 1575 | smcRActLnkOpened uint32 |
| 1576 | smcRPasLnkOpened uint32 |
| 1577 | smcRLnksClosed uint32 |
| 1578 | smcRCurrEstab uint32 |
| 1579 | smcRActiveOpened uint32 |
| 1580 | smcRPassiveOpened uint32 |
| 1581 | smcRConnClosed uint32 |
| 1582 | smcRInSegs uint64 |
| 1583 | smcROutSegs uint64 |
| 1584 | smcRInRsts uint32 |
| 1585 | smcROutRsts uint32 |
| 1586 | smcDCurrEstabLnks uint32 |
| 1587 | smcDActLnkOpened uint32 |
| 1588 | smcDPasLnkOpened uint32 |
| 1589 | smcDLnksClosed uint32 |
| 1590 | smcDCurrEstab uint32 |
| 1591 | smcDActiveOpened uint32 |
| 1592 | smcDPassiveOpened uint32 |
| 1593 | smcDConnClosed uint32 |
| 1594 | smcDInSegs uint64 |
| 1595 | smcDOutSegs uint64 |
| 1596 | smcDInRsts uint32 |
| 1597 | smcDOutRsts uint32 |
| 1598 | } |
| 1599 | |
| 1600 | type nwmConnEntry struct { |
| 1601 | ident uint32 |
| 1602 | local [28]byte // union of sockaddr4 and sockaddr6 |
| 1603 | remote [28]byte // union of sockaddr4 and sockaddr6 |
| 1604 | startTime [8]byte // uint64, changed to prevent padding from being inserted |
| 1605 | lastActivity [8]byte // uint64 |
| 1606 | bytesIn [8]byte // uint64 |
| 1607 | bytesOut [8]byte // uint64 |
| 1608 | inSegs [8]byte // uint64 |
| 1609 | outSegs [8]byte // uint64 |
| 1610 | state uint16 |
| 1611 | activeOpen byte |
| 1612 | flag01 byte |
| 1613 | outBuffered uint32 |
| 1614 | inBuffered uint32 |
| 1615 | maxSndWnd uint32 |
| 1616 | reXmtCount uint32 |
| 1617 | congestionWnd uint32 |
| 1618 | ssThresh uint32 |
| 1619 | roundTripTime uint32 |
| 1620 | roundTripVar uint32 |
| 1621 | sendMSS uint32 |
| 1622 | sndWnd uint32 |
| 1623 | rcvBufSize uint32 |
| 1624 | sndBufSize uint32 |
| 1625 | outOfOrderCount uint32 |
| 1626 | lcl0WindowCount uint32 |
| 1627 | rmt0WindowCount uint32 |
| 1628 | dupacks uint32 |
| 1629 | flag02 byte |
| 1630 | sockOpt6Cont byte |
| 1631 | asid uint16 |
| 1632 | resourceName [8]byte |
| 1633 | resourceId uint32 |
| 1634 | subtask uint32 |
| 1635 | sockOpt byte |
| 1636 | sockOpt6 byte |
| 1637 | clusterConnFlag byte |
| 1638 | proto byte |
| 1639 | targetAppl [8]byte |
| 1640 | luName [8]byte |
| 1641 | clientUserId [8]byte |
| 1642 | logMode [8]byte |
| 1643 | timeStamp uint32 |
| 1644 | timeStampAge uint32 |
| 1645 | serverResourceId uint32 |
| 1646 | intfName [16]byte |
| 1647 | ttlsStatPol byte |
| 1648 | ttlsStatConn byte |
| 1649 | ttlsSSLProt uint16 |
| 1650 | ttlsNegCiph [2]byte |
| 1651 | ttlsSecType byte |
| 1652 | ttlsFIPS140Mode byte |
| 1653 | ttlsUserID [8]byte |
| 1654 | applData [40]byte |
| 1655 | inOldestTime [8]byte // uint64 |
| 1656 | outOldestTime [8]byte // uint64 |
| 1657 | tcpTrustedPartner byte |
| 1658 | _ [3]byte |
| 1659 | bulkDataIntfName [16]byte |
| 1660 | ttlsNegCiph4 [4]byte |
| 1661 | smcReason uint32 |
| 1662 | lclSMCLinkId uint32 |
| 1663 | rmtSMCLinkId uint32 |
| 1664 | smcStatus byte |
| 1665 | smcFlags byte |
| 1666 | _ [2]byte |
| 1667 | rcvWnd uint32 |
| 1668 | lclSMCBufSz uint32 |
| 1669 | rmtSMCBufSz uint32 |
| 1670 | ttlsSessID [32]byte |
| 1671 | ttlsSessIDLen int16 |
| 1672 | _ [1]byte |
| 1673 | smcDStatus byte |
| 1674 | smcDReason uint32 |
| 1675 | } |
| 1676 | |
| 1677 | var svcNameTable [][]byte = [][]byte{ |
| 1678 | []byte("\xc5\xe9\xc2\xd5\xd4\xc9\xc6\xf4"), // svc_EZBNMIF4 |
| 1679 | } |
| 1680 | |
| 1681 | const ( |
| 1682 | svc_EZBNMIF4 = 0 |
| 1683 | ) |
| 1684 | |
| 1685 | func GetsockoptTCPInfo(fd, level, opt int) (*TCPInfo, error) { |
| 1686 | jobname := []byte("\x5c\x40\x40\x40\x40\x40\x40\x40") // "*" |
| 1687 | responseBuffer := [4096]byte{0} |
| 1688 | var bufferAlet, reasonCode uint32 = 0, 0 |
| 1689 | var bufferLen, returnValue, returnCode int32 = 4096, 0, 0 |
| 1690 | |
| 1691 | dsa := [18]uint64{0} |
| 1692 | var argv [7]unsafe.Pointer |
| 1693 | argv[0] = unsafe.Pointer(&jobname[0]) |
| 1694 | argv[1] = unsafe.Pointer(&responseBuffer[0]) |
| 1695 | argv[2] = unsafe.Pointer(&bufferAlet) |
| 1696 | argv[3] = unsafe.Pointer(&bufferLen) |
| 1697 | argv[4] = unsafe.Pointer(&returnValue) |
| 1698 | argv[5] = unsafe.Pointer(&returnCode) |
| 1699 | argv[6] = unsafe.Pointer(&reasonCode) |
| 1700 | |
| 1701 | request := (*struct { |
| 1702 | header nwmHeader |
| 1703 | filter nwmFilter |
| 1704 | })(unsafe.Pointer(&responseBuffer[0])) |
| 1705 | |
| 1706 | EZBNMIF4 := svcLoad(&svcNameTable[svc_EZBNMIF4][0]) |
| 1707 | if EZBNMIF4 == nil { |
| 1708 | return nil, errnoErr(EINVAL) |
| 1709 | } |
| 1710 | |
| 1711 | // GetGlobalStats EZBNMIF4 call |
| 1712 | request.header.ident = nwmHeaderIdentifier |
| 1713 | request.header.length = uint32(unsafe.Sizeof(request.header)) |
| 1714 | request.header.version = nwmCurrentVer |
| 1715 | request.header.nwmType = nwmGlobalStatsType |
| 1716 | request.header.options = 0x80000000 |
| 1717 | |
| 1718 | svcCall(EZBNMIF4, &argv[0], &dsa[0]) |
| 1719 | |
| 1720 | // outputDesc field is filled by EZBNMIF4 on success |
| 1721 | if returnCode != 0 || request.header.outputDesc.offset == 0 { |
| 1722 | return nil, errnoErr(EINVAL) |
| 1723 | } |
| 1724 | |
| 1725 | // Check that EZBNMIF4 returned a nwmRecHeader |
| 1726 | recHeader := (*nwmRecHeader)(unsafe.Pointer(&responseBuffer[request.header.outputDesc.offset])) |
| 1727 | if recHeader.ident != nwmRecHeaderIdentifier { |
| 1728 | return nil, errnoErr(EINVAL) |
| 1729 | } |
| 1730 | |
| 1731 | // Parse nwmTriplets to get offsets of returned entries |
| 1732 | var sections []*uint64 |
| 1733 | var sectionDesc *nwmTriplet = (*nwmTriplet)(unsafe.Pointer(&responseBuffer[0])) |
| 1734 | for i := uint32(0); i < uint32(recHeader.number); i++ { |
| 1735 | offset := request.header.outputDesc.offset + uint32(unsafe.Sizeof(*recHeader)) + i*uint32(unsafe.Sizeof(*sectionDesc)) |
| 1736 | sectionDesc = (*nwmTriplet)(unsafe.Pointer(&responseBuffer[offset])) |
| 1737 | for j := uint32(0); j < sectionDesc.number; j++ { |
| 1738 | offset = request.header.outputDesc.offset + sectionDesc.offset + j*sectionDesc.length |
| 1739 | sections = append(sections, (*uint64)(unsafe.Pointer(&responseBuffer[offset]))) |
| 1740 | } |
| 1741 | } |
| 1742 | |
| 1743 | // Find nwmTCPStatsEntry in returned entries |
| 1744 | var tcpStats *nwmTCPStatsEntry = nil |
| 1745 | for _, ptr := range sections { |
| 1746 | switch *ptr { |
| 1747 | case nwmTCPStatsIdentifier: |
| 1748 | if tcpStats != nil { |
| 1749 | return nil, errnoErr(EINVAL) |
| 1750 | } |
| 1751 | tcpStats = (*nwmTCPStatsEntry)(unsafe.Pointer(ptr)) |
| 1752 | case nwmIPStatsIdentifier: |
| 1753 | case nwmIPGStatsIdentifier: |
| 1754 | case nwmUDPStatsIdentifier: |
| 1755 | case nwmICMPGStatsEntry: |
| 1756 | case nwmICMPTStatsEntry: |
| 1757 | default: |
| 1758 | return nil, errnoErr(EINVAL) |
| 1759 | } |
| 1760 | } |
| 1761 | if tcpStats == nil { |
| 1762 | return nil, errnoErr(EINVAL) |
| 1763 | } |
| 1764 | |
| 1765 | // GetConnectionDetail EZBNMIF4 call |
| 1766 | responseBuffer = [4096]byte{0} |
| 1767 | dsa = [18]uint64{0} |
| 1768 | bufferAlet, reasonCode = 0, 0 |
| 1769 | bufferLen, returnValue, returnCode = 4096, 0, 0 |
| 1770 | nameptr := (*uint32)(unsafe.Pointer(uintptr(0x21c))) // Get jobname of current process |
| 1771 | nameptr = (*uint32)(unsafe.Pointer(uintptr(*nameptr + 12))) |
| 1772 | argv[0] = unsafe.Pointer(uintptr(*nameptr)) |
| 1773 | |
| 1774 | request.header.ident = nwmHeaderIdentifier |
| 1775 | request.header.length = uint32(unsafe.Sizeof(request.header)) |
| 1776 | request.header.version = nwmCurrentVer |
| 1777 | request.header.nwmType = nwmTCPConnType |
| 1778 | request.header.options = 0x80000000 |
| 1779 | |
| 1780 | request.filter.ident = nwmFilterIdentifier |
| 1781 | |
| 1782 | var localSockaddr RawSockaddrAny |
| 1783 | socklen := _Socklen(SizeofSockaddrAny) |
| 1784 | err := getsockname(fd, &localSockaddr, &socklen) |
| 1785 | if err != nil { |
| 1786 | return nil, errnoErr(EINVAL) |
| 1787 | } |
| 1788 | if localSockaddr.Addr.Family == AF_INET { |
| 1789 | localSockaddr := (*RawSockaddrInet4)(unsafe.Pointer(&localSockaddr.Addr)) |
| 1790 | localSockFilter := (*RawSockaddrInet4)(unsafe.Pointer(&request.filter.local[0])) |
| 1791 | localSockFilter.Family = AF_INET |
| 1792 | var i int |
| 1793 | for i = 0; i < 4; i++ { |
| 1794 | if localSockaddr.Addr[i] != 0 { |
| 1795 | break |
| 1796 | } |
| 1797 | } |
| 1798 | if i != 4 { |
| 1799 | request.filter.flags |= nwmFilterLclAddrMask |
| 1800 | for i = 0; i < 4; i++ { |
| 1801 | localSockFilter.Addr[i] = localSockaddr.Addr[i] |
| 1802 | } |
| 1803 | } |
| 1804 | if localSockaddr.Port != 0 { |
| 1805 | request.filter.flags |= nwmFilterLclPortMask |
| 1806 | localSockFilter.Port = localSockaddr.Port |
| 1807 | } |
| 1808 | } else if localSockaddr.Addr.Family == AF_INET6 { |
| 1809 | localSockaddr := (*RawSockaddrInet6)(unsafe.Pointer(&localSockaddr.Addr)) |
| 1810 | localSockFilter := (*RawSockaddrInet6)(unsafe.Pointer(&request.filter.local[0])) |
| 1811 | localSockFilter.Family = AF_INET6 |
| 1812 | var i int |
| 1813 | for i = 0; i < 16; i++ { |
| 1814 | if localSockaddr.Addr[i] != 0 { |
| 1815 | break |
| 1816 | } |
| 1817 | } |
| 1818 | if i != 16 { |
| 1819 | request.filter.flags |= nwmFilterLclAddrMask |
| 1820 | for i = 0; i < 16; i++ { |
| 1821 | localSockFilter.Addr[i] = localSockaddr.Addr[i] |
| 1822 | } |
| 1823 | } |
| 1824 | if localSockaddr.Port != 0 { |
| 1825 | request.filter.flags |= nwmFilterLclPortMask |
| 1826 | localSockFilter.Port = localSockaddr.Port |
| 1827 | } |
| 1828 | } |
| 1829 | |
| 1830 | svcCall(EZBNMIF4, &argv[0], &dsa[0]) |
| 1831 | |
| 1832 | // outputDesc field is filled by EZBNMIF4 on success |
| 1833 | if returnCode != 0 || request.header.outputDesc.offset == 0 { |
| 1834 | return nil, errnoErr(EINVAL) |
| 1835 | } |
| 1836 | |
| 1837 | // Check that EZBNMIF4 returned a nwmConnEntry |
| 1838 | conn := (*nwmConnEntry)(unsafe.Pointer(&responseBuffer[request.header.outputDesc.offset])) |
| 1839 | if conn.ident != nwmTCPConnIdentifier { |
| 1840 | return nil, errnoErr(EINVAL) |
| 1841 | } |
| 1842 | |
| 1843 | // Copy data from the returned data structures into tcpInfo |
| 1844 | // Stats from nwmConnEntry are specific to that connection. |
| 1845 | // Stats from nwmTCPStatsEntry are global (to the interface?) |
| 1846 | // Fields may not be an exact match. Some fields have no equivalent. |
| 1847 | var tcpinfo TCPInfo |
| 1848 | tcpinfo.State = uint8(conn.state) |
| 1849 | tcpinfo.Ca_state = 0 // dummy |
| 1850 | tcpinfo.Retransmits = uint8(tcpStats.retransSegs) |
| 1851 | tcpinfo.Probes = uint8(tcpStats.outWinProbes) |
| 1852 | tcpinfo.Backoff = 0 // dummy |
| 1853 | tcpinfo.Options = 0 // dummy |
| 1854 | tcpinfo.Rto = tcpStats.retransTimeouts |
| 1855 | tcpinfo.Ato = tcpStats.outDelayAcks |
| 1856 | tcpinfo.Snd_mss = conn.sendMSS |
| 1857 | tcpinfo.Rcv_mss = conn.sendMSS // dummy |
| 1858 | tcpinfo.Unacked = 0 // dummy |
| 1859 | tcpinfo.Sacked = 0 // dummy |
| 1860 | tcpinfo.Lost = 0 // dummy |
| 1861 | tcpinfo.Retrans = conn.reXmtCount |
| 1862 | tcpinfo.Fackets = 0 // dummy |
| 1863 | tcpinfo.Last_data_sent = uint32(*(*uint64)(unsafe.Pointer(&conn.lastActivity[0]))) |
| 1864 | tcpinfo.Last_ack_sent = uint32(*(*uint64)(unsafe.Pointer(&conn.outOldestTime[0]))) |
| 1865 | tcpinfo.Last_data_recv = uint32(*(*uint64)(unsafe.Pointer(&conn.inOldestTime[0]))) |
| 1866 | tcpinfo.Last_ack_recv = uint32(*(*uint64)(unsafe.Pointer(&conn.inOldestTime[0]))) |
| 1867 | tcpinfo.Pmtu = conn.sendMSS // dummy, NWMIfRouteMtu is a candidate |
| 1868 | tcpinfo.Rcv_ssthresh = conn.ssThresh |
| 1869 | tcpinfo.Rtt = conn.roundTripTime |
| 1870 | tcpinfo.Rttvar = conn.roundTripVar |
| 1871 | tcpinfo.Snd_ssthresh = conn.ssThresh // dummy |
| 1872 | tcpinfo.Snd_cwnd = conn.congestionWnd |
| 1873 | tcpinfo.Advmss = conn.sendMSS // dummy |
| 1874 | tcpinfo.Reordering = 0 // dummy |
| 1875 | tcpinfo.Rcv_rtt = conn.roundTripTime // dummy |
| 1876 | tcpinfo.Rcv_space = conn.sendMSS // dummy |
| 1877 | tcpinfo.Total_retrans = conn.reXmtCount |
| 1878 | |
| 1879 | svcUnload(&svcNameTable[svc_EZBNMIF4][0], EZBNMIF4) |
| 1880 | |
| 1881 | return &tcpinfo, nil |
| 1882 | } |
| 1883 | |
| 1884 | // GetsockoptString returns the string value of the socket option opt for the |
| 1885 | // socket associated with fd at the given socket level. |
| 1886 | func GetsockoptString(fd, level, opt int) (string, error) { |
| 1887 | buf := make([]byte, 256) |
| 1888 | vallen := _Socklen(len(buf)) |
| 1889 | err := getsockopt(fd, level, opt, unsafe.Pointer(&buf[0]), &vallen) |
| 1890 | if err != nil { |
| 1891 | return "", err |
| 1892 | } |
| 1893 | |
| 1894 | return ByteSliceToString(buf[:vallen]), nil |
| 1895 | } |
| 1896 | |
| 1897 | func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { |
| 1898 | var msg Msghdr |
| 1899 | var rsa RawSockaddrAny |
| 1900 | msg.Name = (*byte)(unsafe.Pointer(&rsa)) |
| 1901 | msg.Namelen = SizeofSockaddrAny |
| 1902 | var iov Iovec |
| 1903 | if len(p) > 0 { |
| 1904 | iov.Base = (*byte)(unsafe.Pointer(&p[0])) |
| 1905 | iov.SetLen(len(p)) |
| 1906 | } |
| 1907 | var dummy byte |
| 1908 | if len(oob) > 0 { |
| 1909 | // receive at least one normal byte |
| 1910 | if len(p) == 0 { |
| 1911 | iov.Base = &dummy |
| 1912 | iov.SetLen(1) |
| 1913 | } |
| 1914 | msg.Control = (*byte)(unsafe.Pointer(&oob[0])) |
| 1915 | msg.SetControllen(len(oob)) |
| 1916 | } |
| 1917 | msg.Iov = &iov |
| 1918 | msg.Iovlen = 1 |
| 1919 | if n, err = recvmsg(fd, &msg, flags); err != nil { |
| 1920 | return |
| 1921 | } |
| 1922 | oobn = int(msg.Controllen) |
| 1923 | recvflags = int(msg.Flags) |
| 1924 | // source address is only specified if the socket is unconnected |
| 1925 | if rsa.Addr.Family != AF_UNSPEC { |
| 1926 | // TODO(neeilan): Remove 0 arg added to get this compiling on z/OS |
| 1927 | from, err = anyToSockaddr(0, &rsa) |
| 1928 | } |
| 1929 | return |
| 1930 | } |
| 1931 | |
| 1932 | func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) { |
| 1933 | _, err = SendmsgN(fd, p, oob, to, flags) |
| 1934 | return |
| 1935 | } |
| 1936 | |
| 1937 | func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) { |
| 1938 | var ptr unsafe.Pointer |
| 1939 | var salen _Socklen |
| 1940 | if to != nil { |
| 1941 | var err error |
| 1942 | ptr, salen, err = to.sockaddr() |
| 1943 | if err != nil { |
| 1944 | return 0, err |
| 1945 | } |
| 1946 | } |
| 1947 | var msg Msghdr |
| 1948 | msg.Name = (*byte)(unsafe.Pointer(ptr)) |
| 1949 | msg.Namelen = int32(salen) |
| 1950 | var iov Iovec |
| 1951 | if len(p) > 0 { |
| 1952 | iov.Base = (*byte)(unsafe.Pointer(&p[0])) |
| 1953 | iov.SetLen(len(p)) |
| 1954 | } |
| 1955 | var dummy byte |
| 1956 | if len(oob) > 0 { |
| 1957 | // send at least one normal byte |
| 1958 | if len(p) == 0 { |
| 1959 | iov.Base = &dummy |
| 1960 | iov.SetLen(1) |
| 1961 | } |
| 1962 | msg.Control = (*byte)(unsafe.Pointer(&oob[0])) |
| 1963 | msg.SetControllen(len(oob)) |
| 1964 | } |
| 1965 | msg.Iov = &iov |
| 1966 | msg.Iovlen = 1 |
| 1967 | if n, err = sendmsg(fd, &msg, flags); err != nil { |
| 1968 | return 0, err |
| 1969 | } |
| 1970 | if len(oob) > 0 && len(p) == 0 { |
| 1971 | n = 0 |
| 1972 | } |
| 1973 | return n, nil |
| 1974 | } |
| 1975 | |
| 1976 | func Opendir(name string) (uintptr, error) { |
| 1977 | p, err := BytePtrFromString(name) |
| 1978 | if err != nil { |
| 1979 | return 0, err |
| 1980 | } |
| 1981 | err = nil |
| 1982 | runtime.EnterSyscall() |
| 1983 | dir, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___OPENDIR_A<<4, uintptr(unsafe.Pointer(p))) |
| 1984 | runtime.ExitSyscall() |
| 1985 | runtime.KeepAlive(unsafe.Pointer(p)) |
| 1986 | if dir == 0 { |
| 1987 | err = errnoErr2(e1, e2) |
| 1988 | } |
| 1989 | return dir, err |
| 1990 | } |
| 1991 | |
| 1992 | // clearsyscall.Errno resets the errno value to 0. |
| 1993 | func clearErrno() |
| 1994 | |
| 1995 | func Closedir(dir uintptr) error { |
| 1996 | runtime.EnterSyscall() |
| 1997 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSEDIR<<4, dir) |
| 1998 | runtime.ExitSyscall() |
| 1999 | if r0 != 0 { |
| 2000 | return errnoErr2(e1, e2) |
| 2001 | } |
| 2002 | return nil |
| 2003 | } |
| 2004 | |
| 2005 | func Seekdir(dir uintptr, pos int) { |
| 2006 | runtime.EnterSyscall() |
| 2007 | CallLeFuncWithErr(GetZosLibVec()+SYS_SEEKDIR<<4, dir, uintptr(pos)) |
| 2008 | runtime.ExitSyscall() |
| 2009 | } |
| 2010 | |
| 2011 | func Telldir(dir uintptr) (int, error) { |
| 2012 | p, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_TELLDIR<<4, dir) |
| 2013 | pos := int(p) |
| 2014 | if int64(p) == -1 { |
| 2015 | return pos, errnoErr2(e1, e2) |
| 2016 | } |
| 2017 | return pos, nil |
| 2018 | } |
| 2019 | |
| 2020 | // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command. |
| 2021 | func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error { |
| 2022 | // struct flock is packed on z/OS. We can't emulate that in Go so |
| 2023 | // instead we pack it here. |
| 2024 | var flock [24]byte |
| 2025 | *(*int16)(unsafe.Pointer(&flock[0])) = lk.Type |
| 2026 | *(*int16)(unsafe.Pointer(&flock[2])) = lk.Whence |
| 2027 | *(*int64)(unsafe.Pointer(&flock[4])) = lk.Start |
| 2028 | *(*int64)(unsafe.Pointer(&flock[12])) = lk.Len |
| 2029 | *(*int32)(unsafe.Pointer(&flock[20])) = lk.Pid |
| 2030 | runtime.EnterSyscall() |
| 2031 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FCNTL<<4, fd, uintptr(cmd), uintptr(unsafe.Pointer(&flock))) |
| 2032 | runtime.ExitSyscall() |
| 2033 | lk.Type = *(*int16)(unsafe.Pointer(&flock[0])) |
| 2034 | lk.Whence = *(*int16)(unsafe.Pointer(&flock[2])) |
| 2035 | lk.Start = *(*int64)(unsafe.Pointer(&flock[4])) |
| 2036 | lk.Len = *(*int64)(unsafe.Pointer(&flock[12])) |
| 2037 | lk.Pid = *(*int32)(unsafe.Pointer(&flock[20])) |
| 2038 | if r0 == 0 { |
| 2039 | return nil |
| 2040 | } |
| 2041 | return errnoErr2(e1, e2) |
| 2042 | } |
| 2043 | |
| 2044 | func impl_Flock(fd int, how int) (err error) { |
| 2045 | runtime.EnterSyscall() |
| 2046 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FLOCK<<4, uintptr(fd), uintptr(how)) |
| 2047 | runtime.ExitSyscall() |
| 2048 | if int64(r0) == -1 { |
| 2049 | err = errnoErr2(e1, e2) |
| 2050 | } |
| 2051 | return |
| 2052 | } |
| 2053 | |
| 2054 | //go:nosplit |
| 2055 | func get_FlockAddr() *(func(fd int, how int) (err error)) |
| 2056 | |
| 2057 | var Flock = enter_Flock |
| 2058 | |
| 2059 | func validFlock(fp uintptr) bool { |
| 2060 | if funcptrtest(GetZosLibVec()+SYS_FLOCK<<4, "") == 0 { |
| 2061 | if name, err := getLeFuncName(GetZosLibVec() + SYS_FLOCK<<4); err == nil { |
| 2062 | return name == "flock" |
| 2063 | } |
| 2064 | } |
| 2065 | return false |
| 2066 | } |
| 2067 | |
| 2068 | func enter_Flock(fd int, how int) (err error) { |
| 2069 | funcref := get_FlockAddr() |
| 2070 | if validFlock(GetZosLibVec() + SYS_FLOCK<<4) { |
| 2071 | *funcref = impl_Flock |
| 2072 | } else { |
| 2073 | *funcref = legacyFlock |
| 2074 | } |
| 2075 | return (*funcref)(fd, how) |
| 2076 | } |
| 2077 | |
| 2078 | func legacyFlock(fd int, how int) error { |
| 2079 | |
| 2080 | var flock_type int16 |
| 2081 | var fcntl_cmd int |
| 2082 | |
| 2083 | switch how { |
| 2084 | case LOCK_SH | LOCK_NB: |
| 2085 | flock_type = F_RDLCK |
| 2086 | fcntl_cmd = F_SETLK |
| 2087 | case LOCK_EX | LOCK_NB: |
| 2088 | flock_type = F_WRLCK |
| 2089 | fcntl_cmd = F_SETLK |
| 2090 | case LOCK_EX: |
| 2091 | flock_type = F_WRLCK |
| 2092 | fcntl_cmd = F_SETLKW |
| 2093 | case LOCK_UN: |
| 2094 | flock_type = F_UNLCK |
| 2095 | fcntl_cmd = F_SETLKW |
| 2096 | default: |
| 2097 | } |
| 2098 | |
| 2099 | flock := Flock_t{ |
| 2100 | Type: int16(flock_type), |
| 2101 | Whence: int16(0), |
| 2102 | Start: int64(0), |
| 2103 | Len: int64(0), |
| 2104 | Pid: int32(Getppid()), |
| 2105 | } |
| 2106 | |
| 2107 | err := FcntlFlock(uintptr(fd), fcntl_cmd, &flock) |
| 2108 | return err |
| 2109 | } |
| 2110 | |
| 2111 | func Mlock(b []byte) (err error) { |
| 2112 | runtime.EnterSyscall() |
| 2113 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP) |
| 2114 | runtime.ExitSyscall() |
| 2115 | if r0 != 0 { |
| 2116 | err = errnoErr2(e1, e2) |
| 2117 | } |
| 2118 | return |
| 2119 | } |
| 2120 | |
| 2121 | func Mlock2(b []byte, flags int) (err error) { |
| 2122 | runtime.EnterSyscall() |
| 2123 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP) |
| 2124 | runtime.ExitSyscall() |
| 2125 | if r0 != 0 { |
| 2126 | err = errnoErr2(e1, e2) |
| 2127 | } |
| 2128 | return |
| 2129 | } |
| 2130 | |
| 2131 | func Mlockall(flags int) (err error) { |
| 2132 | runtime.EnterSyscall() |
| 2133 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP) |
| 2134 | runtime.ExitSyscall() |
| 2135 | if r0 != 0 { |
| 2136 | err = errnoErr2(e1, e2) |
| 2137 | } |
| 2138 | return |
| 2139 | } |
| 2140 | |
| 2141 | func Munlock(b []byte) (err error) { |
| 2142 | runtime.EnterSyscall() |
| 2143 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_SWAP) |
| 2144 | runtime.ExitSyscall() |
| 2145 | if r0 != 0 { |
| 2146 | err = errnoErr2(e1, e2) |
| 2147 | } |
| 2148 | return |
| 2149 | } |
| 2150 | |
| 2151 | func Munlockall() (err error) { |
| 2152 | runtime.EnterSyscall() |
| 2153 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_SWAP) |
| 2154 | runtime.ExitSyscall() |
| 2155 | if r0 != 0 { |
| 2156 | err = errnoErr2(e1, e2) |
| 2157 | } |
| 2158 | return |
| 2159 | } |
| 2160 | |
| 2161 | func ClockGettime(clockid int32, ts *Timespec) error { |
| 2162 | |
| 2163 | var ticks_per_sec uint32 = 100 //TODO(kenan): value is currently hardcoded; need sysconf() call otherwise |
| 2164 | var nsec_per_sec int64 = 1000000000 |
| 2165 | |
| 2166 | if ts == nil { |
| 2167 | return EFAULT |
| 2168 | } |
| 2169 | if clockid == CLOCK_REALTIME || clockid == CLOCK_MONOTONIC { |
| 2170 | var nanotime int64 = runtime.Nanotime1() |
| 2171 | ts.Sec = nanotime / nsec_per_sec |
| 2172 | ts.Nsec = nanotime % nsec_per_sec |
| 2173 | } else if clockid == CLOCK_PROCESS_CPUTIME_ID || clockid == CLOCK_THREAD_CPUTIME_ID { |
| 2174 | var tm Tms |
| 2175 | _, err := Times(&tm) |
| 2176 | if err != nil { |
| 2177 | return EFAULT |
| 2178 | } |
| 2179 | ts.Sec = int64(tm.Utime / ticks_per_sec) |
| 2180 | ts.Nsec = int64(tm.Utime) * nsec_per_sec / int64(ticks_per_sec) |
| 2181 | } else { |
| 2182 | return EINVAL |
| 2183 | } |
| 2184 | return nil |
| 2185 | } |
| 2186 | |
| 2187 | // Chtag |
| 2188 | |
| 2189 | //go:nosplit |
| 2190 | func get_ChtagAddr() *(func(path string, ccsid uint64, textbit uint64) error) |
| 2191 | |
| 2192 | var Chtag = enter_Chtag |
| 2193 | |
| 2194 | func enter_Chtag(path string, ccsid uint64, textbit uint64) error { |
| 2195 | funcref := get_ChtagAddr() |
| 2196 | if validSetxattr() { |
| 2197 | *funcref = impl_Chtag |
| 2198 | } else { |
| 2199 | *funcref = legacy_Chtag |
| 2200 | } |
| 2201 | return (*funcref)(path, ccsid, textbit) |
| 2202 | } |
| 2203 | |
| 2204 | func legacy_Chtag(path string, ccsid uint64, textbit uint64) error { |
| 2205 | tag := ccsid<<16 | textbit<<15 |
| 2206 | var tag_buff [8]byte |
| 2207 | DecodeData(tag_buff[:], 8, tag) |
| 2208 | return Setxattr(path, "filetag", tag_buff[:], XATTR_REPLACE) |
| 2209 | } |
| 2210 | |
| 2211 | func impl_Chtag(path string, ccsid uint64, textbit uint64) error { |
| 2212 | tag := ccsid<<16 | textbit<<15 |
| 2213 | var tag_buff [4]byte |
| 2214 | DecodeData(tag_buff[:], 4, tag) |
| 2215 | return Setxattr(path, "system.filetag", tag_buff[:], XATTR_REPLACE) |
| 2216 | } |
| 2217 | |
| 2218 | // End of Chtag |
| 2219 | |
| 2220 | // Nanosleep |
| 2221 | |
| 2222 | //go:nosplit |
| 2223 | func get_NanosleepAddr() *(func(time *Timespec, leftover *Timespec) error) |
| 2224 | |
| 2225 | var Nanosleep = enter_Nanosleep |
| 2226 | |
| 2227 | func enter_Nanosleep(time *Timespec, leftover *Timespec) error { |
| 2228 | funcref := get_NanosleepAddr() |
| 2229 | if funcptrtest(GetZosLibVec()+SYS_NANOSLEEP<<4, "") == 0 { |
| 2230 | *funcref = impl_Nanosleep |
| 2231 | } else { |
| 2232 | *funcref = legacyNanosleep |
| 2233 | } |
| 2234 | return (*funcref)(time, leftover) |
| 2235 | } |
| 2236 | |
| 2237 | func impl_Nanosleep(time *Timespec, leftover *Timespec) error { |
| 2238 | runtime.EnterSyscall() |
| 2239 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_NANOSLEEP<<4, uintptr(unsafe.Pointer(time)), uintptr(unsafe.Pointer(leftover))) |
| 2240 | runtime.ExitSyscall() |
| 2241 | if int64(r0) == -1 { |
| 2242 | return errnoErr2(e1, e2) |
| 2243 | } |
| 2244 | return nil |
| 2245 | } |
| 2246 | |
| 2247 | func legacyNanosleep(time *Timespec, leftover *Timespec) error { |
| 2248 | t0 := runtime.Nanotime1() |
| 2249 | var secrem uint32 |
| 2250 | var nsecrem uint32 |
| 2251 | total := time.Sec*1000000000 + time.Nsec |
| 2252 | elapsed := runtime.Nanotime1() - t0 |
| 2253 | var rv int32 |
| 2254 | var rc int32 |
| 2255 | var err error |
| 2256 | // repeatedly sleep for 1 second until less than 1 second left |
| 2257 | for total-elapsed > 1000000000 { |
| 2258 | rv, rc, _ = BpxCondTimedWait(uint32(1), uint32(0), uint32(CW_CONDVAR), &secrem, &nsecrem) |
| 2259 | if rv != 0 && rc != 112 { // 112 is EAGAIN |
| 2260 | if leftover != nil && rc == 120 { // 120 is EINTR |
| 2261 | leftover.Sec = int64(secrem) |
| 2262 | leftover.Nsec = int64(nsecrem) |
| 2263 | } |
| 2264 | err = Errno(rc) |
| 2265 | return err |
| 2266 | } |
| 2267 | elapsed = runtime.Nanotime1() - t0 |
| 2268 | } |
| 2269 | // sleep the remainder |
| 2270 | if total > elapsed { |
| 2271 | rv, rc, _ = BpxCondTimedWait(uint32(0), uint32(total-elapsed), uint32(CW_CONDVAR), &secrem, &nsecrem) |
| 2272 | } |
| 2273 | if leftover != nil && rc == 120 { |
| 2274 | leftover.Sec = int64(secrem) |
| 2275 | leftover.Nsec = int64(nsecrem) |
| 2276 | } |
| 2277 | if rv != 0 && rc != 112 { |
| 2278 | err = Errno(rc) |
| 2279 | } |
| 2280 | return err |
| 2281 | } |
| 2282 | |
| 2283 | // End of Nanosleep |
| 2284 | |
| 2285 | var ( |
| 2286 | Stdin = 0 |
| 2287 | Stdout = 1 |
| 2288 | Stderr = 2 |
| 2289 | ) |
| 2290 | |
| 2291 | // Do the interface allocations only once for common |
| 2292 | // Errno values. |
| 2293 | var ( |
| 2294 | errEAGAIN error = syscall.EAGAIN |
| 2295 | errEINVAL error = syscall.EINVAL |
| 2296 | errENOENT error = syscall.ENOENT |
| 2297 | ) |
| 2298 | |
| 2299 | var ZosTraceLevel int |
| 2300 | var ZosTracefile *os.File |
| 2301 | |
| 2302 | var ( |
| 2303 | signalNameMapOnce sync.Once |
| 2304 | signalNameMap map[string]syscall.Signal |
| 2305 | ) |
| 2306 | |
| 2307 | // errnoErr returns common boxed Errno values, to prevent |
| 2308 | // allocations at runtime. |
| 2309 | func errnoErr(e Errno) error { |
| 2310 | switch e { |
| 2311 | case 0: |
| 2312 | return nil |
| 2313 | case EAGAIN: |
| 2314 | return errEAGAIN |
| 2315 | case EINVAL: |
| 2316 | return errEINVAL |
| 2317 | case ENOENT: |
| 2318 | return errENOENT |
| 2319 | } |
| 2320 | return e |
| 2321 | } |
| 2322 | |
| 2323 | var reg *regexp.Regexp |
| 2324 | |
| 2325 | // enhanced with zos specific errno2 |
| 2326 | func errnoErr2(e Errno, e2 uintptr) error { |
| 2327 | switch e { |
| 2328 | case 0: |
| 2329 | return nil |
| 2330 | case EAGAIN: |
| 2331 | return errEAGAIN |
| 2332 | /* |
| 2333 | Allow the retrieval of errno2 for EINVAL and ENOENT on zos |
| 2334 | case EINVAL: |
| 2335 | return errEINVAL |
| 2336 | case ENOENT: |
| 2337 | return errENOENT |
| 2338 | */ |
| 2339 | } |
| 2340 | if ZosTraceLevel > 0 { |
| 2341 | var name string |
| 2342 | if reg == nil { |
| 2343 | reg = regexp.MustCompile("(^unix\\.[^/]+$|.*\\/unix\\.[^/]+$)") |
| 2344 | } |
| 2345 | i := 1 |
| 2346 | pc, file, line, ok := runtime.Caller(i) |
| 2347 | if ok { |
| 2348 | name = runtime.FuncForPC(pc).Name() |
| 2349 | } |
| 2350 | for ok && reg.MatchString(runtime.FuncForPC(pc).Name()) { |
| 2351 | i += 1 |
| 2352 | pc, file, line, ok = runtime.Caller(i) |
| 2353 | } |
| 2354 | if ok { |
| 2355 | if ZosTracefile == nil { |
| 2356 | ZosConsolePrintf("From %s:%d\n", file, line) |
| 2357 | ZosConsolePrintf("%s: %s (errno2=0x%x)\n", name, e.Error(), e2) |
| 2358 | } else { |
| 2359 | fmt.Fprintf(ZosTracefile, "From %s:%d\n", file, line) |
| 2360 | fmt.Fprintf(ZosTracefile, "%s: %s (errno2=0x%x)\n", name, e.Error(), e2) |
| 2361 | } |
| 2362 | } else { |
| 2363 | if ZosTracefile == nil { |
| 2364 | ZosConsolePrintf("%s (errno2=0x%x)\n", e.Error(), e2) |
| 2365 | } else { |
| 2366 | fmt.Fprintf(ZosTracefile, "%s (errno2=0x%x)\n", e.Error(), e2) |
| 2367 | } |
| 2368 | } |
| 2369 | } |
| 2370 | return e |
| 2371 | } |
| 2372 | |
| 2373 | // ErrnoName returns the error name for error number e. |
| 2374 | func ErrnoName(e Errno) string { |
| 2375 | i := sort.Search(len(errorList), func(i int) bool { |
| 2376 | return errorList[i].num >= e |
| 2377 | }) |
| 2378 | if i < len(errorList) && errorList[i].num == e { |
| 2379 | return errorList[i].name |
| 2380 | } |
| 2381 | return "" |
| 2382 | } |
| 2383 | |
| 2384 | // SignalName returns the signal name for signal number s. |
| 2385 | func SignalName(s syscall.Signal) string { |
| 2386 | i := sort.Search(len(signalList), func(i int) bool { |
| 2387 | return signalList[i].num >= s |
| 2388 | }) |
| 2389 | if i < len(signalList) && signalList[i].num == s { |
| 2390 | return signalList[i].name |
| 2391 | } |
| 2392 | return "" |
| 2393 | } |
| 2394 | |
| 2395 | // SignalNum returns the syscall.Signal for signal named s, |
| 2396 | // or 0 if a signal with such name is not found. |
| 2397 | // The signal name should start with "SIG". |
| 2398 | func SignalNum(s string) syscall.Signal { |
| 2399 | signalNameMapOnce.Do(func() { |
| 2400 | signalNameMap = make(map[string]syscall.Signal, len(signalList)) |
| 2401 | for _, signal := range signalList { |
| 2402 | signalNameMap[signal.name] = signal.num |
| 2403 | } |
| 2404 | }) |
| 2405 | return signalNameMap[s] |
| 2406 | } |
| 2407 | |
| 2408 | // clen returns the index of the first NULL byte in n or len(n) if n contains no NULL byte. |
| 2409 | func clen(n []byte) int { |
| 2410 | i := bytes.IndexByte(n, 0) |
| 2411 | if i == -1 { |
| 2412 | i = len(n) |
| 2413 | } |
| 2414 | return i |
| 2415 | } |
| 2416 | |
| 2417 | // Mmap manager, for use by operating system-specific implementations. |
| 2418 | |
| 2419 | type mmapper struct { |
| 2420 | sync.Mutex |
| 2421 | active map[*byte][]byte // active mappings; key is last byte in mapping |
| 2422 | mmap func(addr, length uintptr, prot, flags, fd int, offset int64) (uintptr, error) |
| 2423 | munmap func(addr uintptr, length uintptr) error |
| 2424 | } |
| 2425 | |
| 2426 | func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { |
| 2427 | if length <= 0 { |
| 2428 | return nil, EINVAL |
| 2429 | } |
| 2430 | |
| 2431 | // Set __MAP_64 by default |
| 2432 | flags |= __MAP_64 |
| 2433 | |
| 2434 | // Map the requested memory. |
| 2435 | addr, errno := m.mmap(0, uintptr(length), prot, flags, fd, offset) |
| 2436 | if errno != nil { |
| 2437 | return nil, errno |
| 2438 | } |
| 2439 | |
| 2440 | // Slice memory layout |
| 2441 | var sl = struct { |
| 2442 | addr uintptr |
| 2443 | len int |
| 2444 | cap int |
| 2445 | }{addr, length, length} |
| 2446 | |
| 2447 | // Use unsafe to turn sl into a []byte. |
| 2448 | b := *(*[]byte)(unsafe.Pointer(&sl)) |
| 2449 | |
| 2450 | // Register mapping in m and return it. |
| 2451 | p := &b[cap(b)-1] |
| 2452 | m.Lock() |
| 2453 | defer m.Unlock() |
| 2454 | m.active[p] = b |
| 2455 | return b, nil |
| 2456 | } |
| 2457 | |
| 2458 | func (m *mmapper) Munmap(data []byte) (err error) { |
| 2459 | if len(data) == 0 || len(data) != cap(data) { |
| 2460 | return EINVAL |
| 2461 | } |
| 2462 | |
| 2463 | // Find the base of the mapping. |
| 2464 | p := &data[cap(data)-1] |
| 2465 | m.Lock() |
| 2466 | defer m.Unlock() |
| 2467 | b := m.active[p] |
| 2468 | if b == nil || &b[0] != &data[0] { |
| 2469 | return EINVAL |
| 2470 | } |
| 2471 | |
| 2472 | // Unmap the memory and update m. |
| 2473 | if errno := m.munmap(uintptr(unsafe.Pointer(&b[0])), uintptr(len(b))); errno != nil { |
| 2474 | return errno |
| 2475 | } |
| 2476 | delete(m.active, p) |
| 2477 | return nil |
| 2478 | } |
| 2479 | |
| 2480 | func Read(fd int, p []byte) (n int, err error) { |
| 2481 | n, err = read(fd, p) |
| 2482 | if raceenabled { |
| 2483 | if n > 0 { |
| 2484 | raceWriteRange(unsafe.Pointer(&p[0]), n) |
| 2485 | } |
| 2486 | if err == nil { |
| 2487 | raceAcquire(unsafe.Pointer(&ioSync)) |
| 2488 | } |
| 2489 | } |
| 2490 | return |
| 2491 | } |
| 2492 | |
| 2493 | func Write(fd int, p []byte) (n int, err error) { |
| 2494 | if raceenabled { |
| 2495 | raceReleaseMerge(unsafe.Pointer(&ioSync)) |
| 2496 | } |
| 2497 | n, err = write(fd, p) |
| 2498 | if raceenabled && n > 0 { |
| 2499 | raceReadRange(unsafe.Pointer(&p[0]), n) |
| 2500 | } |
| 2501 | return |
| 2502 | } |
| 2503 | |
| 2504 | // For testing: clients can set this flag to force |
| 2505 | // creation of IPv6 sockets to return EAFNOSUPPORT. |
| 2506 | var SocketDisableIPv6 bool |
| 2507 | |
| 2508 | // Sockaddr represents a socket address. |
| 2509 | type Sockaddr interface { |
| 2510 | sockaddr() (ptr unsafe.Pointer, len _Socklen, err error) // lowercase; only we can define Sockaddrs |
| 2511 | } |
| 2512 | |
| 2513 | // SockaddrInet4 implements the Sockaddr interface for AF_INET type sockets. |
| 2514 | type SockaddrInet4 struct { |
| 2515 | Port int |
| 2516 | Addr [4]byte |
| 2517 | raw RawSockaddrInet4 |
| 2518 | } |
| 2519 | |
| 2520 | // SockaddrInet6 implements the Sockaddr interface for AF_INET6 type sockets. |
| 2521 | type SockaddrInet6 struct { |
| 2522 | Port int |
| 2523 | ZoneId uint32 |
| 2524 | Addr [16]byte |
| 2525 | raw RawSockaddrInet6 |
| 2526 | } |
| 2527 | |
| 2528 | // SockaddrUnix implements the Sockaddr interface for AF_UNIX type sockets. |
| 2529 | type SockaddrUnix struct { |
| 2530 | Name string |
| 2531 | raw RawSockaddrUnix |
| 2532 | } |
| 2533 | |
| 2534 | func Bind(fd int, sa Sockaddr) (err error) { |
| 2535 | ptr, n, err := sa.sockaddr() |
| 2536 | if err != nil { |
| 2537 | return err |
| 2538 | } |
| 2539 | return bind(fd, ptr, n) |
| 2540 | } |
| 2541 | |
| 2542 | func Connect(fd int, sa Sockaddr) (err error) { |
| 2543 | ptr, n, err := sa.sockaddr() |
| 2544 | if err != nil { |
| 2545 | return err |
| 2546 | } |
| 2547 | return connect(fd, ptr, n) |
| 2548 | } |
| 2549 | |
| 2550 | func Getpeername(fd int) (sa Sockaddr, err error) { |
| 2551 | var rsa RawSockaddrAny |
| 2552 | var len _Socklen = SizeofSockaddrAny |
| 2553 | if err = getpeername(fd, &rsa, &len); err != nil { |
| 2554 | return |
| 2555 | } |
| 2556 | return anyToSockaddr(fd, &rsa) |
| 2557 | } |
| 2558 | |
| 2559 | func GetsockoptByte(fd, level, opt int) (value byte, err error) { |
| 2560 | var n byte |
| 2561 | vallen := _Socklen(1) |
| 2562 | err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) |
| 2563 | return n, err |
| 2564 | } |
| 2565 | |
| 2566 | func GetsockoptInt(fd, level, opt int) (value int, err error) { |
| 2567 | var n int32 |
| 2568 | vallen := _Socklen(4) |
| 2569 | err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) |
| 2570 | return int(n), err |
| 2571 | } |
| 2572 | |
| 2573 | func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) { |
| 2574 | vallen := _Socklen(4) |
| 2575 | err = getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen) |
| 2576 | return value, err |
| 2577 | } |
| 2578 | |
| 2579 | func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) { |
| 2580 | var value IPMreq |
| 2581 | vallen := _Socklen(SizeofIPMreq) |
| 2582 | err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
| 2583 | return &value, err |
| 2584 | } |
| 2585 | |
| 2586 | func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) { |
| 2587 | var value IPv6Mreq |
| 2588 | vallen := _Socklen(SizeofIPv6Mreq) |
| 2589 | err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
| 2590 | return &value, err |
| 2591 | } |
| 2592 | |
| 2593 | func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) { |
| 2594 | var value IPv6MTUInfo |
| 2595 | vallen := _Socklen(SizeofIPv6MTUInfo) |
| 2596 | err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
| 2597 | return &value, err |
| 2598 | } |
| 2599 | |
| 2600 | func GetsockoptICMPv6Filter(fd, level, opt int) (*ICMPv6Filter, error) { |
| 2601 | var value ICMPv6Filter |
| 2602 | vallen := _Socklen(SizeofICMPv6Filter) |
| 2603 | err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
| 2604 | return &value, err |
| 2605 | } |
| 2606 | |
| 2607 | func GetsockoptLinger(fd, level, opt int) (*Linger, error) { |
| 2608 | var linger Linger |
| 2609 | vallen := _Socklen(SizeofLinger) |
| 2610 | err := getsockopt(fd, level, opt, unsafe.Pointer(&linger), &vallen) |
| 2611 | return &linger, err |
| 2612 | } |
| 2613 | |
| 2614 | func GetsockoptTimeval(fd, level, opt int) (*Timeval, error) { |
| 2615 | var tv Timeval |
| 2616 | vallen := _Socklen(unsafe.Sizeof(tv)) |
| 2617 | err := getsockopt(fd, level, opt, unsafe.Pointer(&tv), &vallen) |
| 2618 | return &tv, err |
| 2619 | } |
| 2620 | |
| 2621 | func GetsockoptUint64(fd, level, opt int) (value uint64, err error) { |
| 2622 | var n uint64 |
| 2623 | vallen := _Socklen(8) |
| 2624 | err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) |
| 2625 | return n, err |
| 2626 | } |
| 2627 | |
| 2628 | func Recvfrom(fd int, p []byte, flags int) (n int, from Sockaddr, err error) { |
| 2629 | var rsa RawSockaddrAny |
| 2630 | var len _Socklen = SizeofSockaddrAny |
| 2631 | if n, err = recvfrom(fd, p, flags, &rsa, &len); err != nil { |
| 2632 | return |
| 2633 | } |
| 2634 | if rsa.Addr.Family != AF_UNSPEC { |
| 2635 | from, err = anyToSockaddr(fd, &rsa) |
| 2636 | } |
| 2637 | return |
| 2638 | } |
| 2639 | |
| 2640 | func Sendto(fd int, p []byte, flags int, to Sockaddr) (err error) { |
| 2641 | ptr, n, err := to.sockaddr() |
| 2642 | if err != nil { |
| 2643 | return err |
| 2644 | } |
| 2645 | return sendto(fd, p, flags, ptr, n) |
| 2646 | } |
| 2647 | |
| 2648 | func SetsockoptByte(fd, level, opt int, value byte) (err error) { |
| 2649 | return setsockopt(fd, level, opt, unsafe.Pointer(&value), 1) |
| 2650 | } |
| 2651 | |
| 2652 | func SetsockoptInt(fd, level, opt int, value int) (err error) { |
| 2653 | var n = int32(value) |
| 2654 | return setsockopt(fd, level, opt, unsafe.Pointer(&n), 4) |
| 2655 | } |
| 2656 | |
| 2657 | func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (err error) { |
| 2658 | return setsockopt(fd, level, opt, unsafe.Pointer(&value[0]), 4) |
| 2659 | } |
| 2660 | |
| 2661 | func SetsockoptIPMreq(fd, level, opt int, mreq *IPMreq) (err error) { |
| 2662 | return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPMreq) |
| 2663 | } |
| 2664 | |
| 2665 | func SetsockoptIPv6Mreq(fd, level, opt int, mreq *IPv6Mreq) (err error) { |
| 2666 | return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPv6Mreq) |
| 2667 | } |
| 2668 | |
| 2669 | func SetsockoptICMPv6Filter(fd, level, opt int, filter *ICMPv6Filter) error { |
| 2670 | return setsockopt(fd, level, opt, unsafe.Pointer(filter), SizeofICMPv6Filter) |
| 2671 | } |
| 2672 | |
| 2673 | func SetsockoptLinger(fd, level, opt int, l *Linger) (err error) { |
| 2674 | return setsockopt(fd, level, opt, unsafe.Pointer(l), SizeofLinger) |
| 2675 | } |
| 2676 | |
| 2677 | func SetsockoptString(fd, level, opt int, s string) (err error) { |
| 2678 | var p unsafe.Pointer |
| 2679 | if len(s) > 0 { |
| 2680 | p = unsafe.Pointer(&[]byte(s)[0]) |
| 2681 | } |
| 2682 | return setsockopt(fd, level, opt, p, uintptr(len(s))) |
| 2683 | } |
| 2684 | |
| 2685 | func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (err error) { |
| 2686 | return setsockopt(fd, level, opt, unsafe.Pointer(tv), unsafe.Sizeof(*tv)) |
| 2687 | } |
| 2688 | |
| 2689 | func SetsockoptUint64(fd, level, opt int, value uint64) (err error) { |
| 2690 | return setsockopt(fd, level, opt, unsafe.Pointer(&value), 8) |
| 2691 | } |
| 2692 | |
| 2693 | func Socket(domain, typ, proto int) (fd int, err error) { |
| 2694 | if domain == AF_INET6 && SocketDisableIPv6 { |
| 2695 | return -1, EAFNOSUPPORT |
| 2696 | } |
| 2697 | fd, err = socket(domain, typ, proto) |
| 2698 | return |
| 2699 | } |
| 2700 | |
| 2701 | func Socketpair(domain, typ, proto int) (fd [2]int, err error) { |
| 2702 | var fdx [2]int32 |
| 2703 | err = socketpair(domain, typ, proto, &fdx) |
| 2704 | if err == nil { |
| 2705 | fd[0] = int(fdx[0]) |
| 2706 | fd[1] = int(fdx[1]) |
| 2707 | } |
| 2708 | return |
| 2709 | } |
| 2710 | |
| 2711 | var ioSync int64 |
| 2712 | |
| 2713 | func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) } |
| 2714 | |
| 2715 | func SetNonblock(fd int, nonblocking bool) (err error) { |
| 2716 | flag, err := fcntl(fd, F_GETFL, 0) |
| 2717 | if err != nil { |
| 2718 | return err |
| 2719 | } |
| 2720 | if nonblocking { |
| 2721 | flag |= O_NONBLOCK |
| 2722 | } else { |
| 2723 | flag &= ^O_NONBLOCK |
| 2724 | } |
| 2725 | _, err = fcntl(fd, F_SETFL, flag) |
| 2726 | return err |
| 2727 | } |
| 2728 | |
| 2729 | // Exec calls execve(2), which replaces the calling executable in the process |
| 2730 | // tree. argv0 should be the full path to an executable ("/bin/ls") and the |
| 2731 | // executable name should also be the first argument in argv (["ls", "-l"]). |
| 2732 | // envv are the environment variables that should be passed to the new |
| 2733 | // process (["USER=go", "PWD=/tmp"]). |
| 2734 | func Exec(argv0 string, argv []string, envv []string) error { |
| 2735 | return syscall.Exec(argv0, argv, envv) |
| 2736 | } |
| 2737 | |
| 2738 | func Getag(path string) (ccsid uint16, flag uint16, err error) { |
| 2739 | var val [8]byte |
| 2740 | sz, err := Getxattr(path, "ccsid", val[:]) |
| 2741 | if err != nil { |
| 2742 | return |
| 2743 | } |
| 2744 | ccsid = uint16(EncodeData(val[0:sz])) |
| 2745 | sz, err = Getxattr(path, "flags", val[:]) |
| 2746 | if err != nil { |
| 2747 | return |
| 2748 | } |
| 2749 | flag = uint16(EncodeData(val[0:sz]) >> 15) |
| 2750 | return |
| 2751 | } |
| 2752 | |
| 2753 | // Mount begin |
| 2754 | func impl_Mount(source string, target string, fstype string, flags uintptr, data string) (err error) { |
| 2755 | var _p0 *byte |
| 2756 | _p0, err = BytePtrFromString(source) |
| 2757 | if err != nil { |
| 2758 | return |
| 2759 | } |
| 2760 | var _p1 *byte |
| 2761 | _p1, err = BytePtrFromString(target) |
| 2762 | if err != nil { |
| 2763 | return |
| 2764 | } |
| 2765 | var _p2 *byte |
| 2766 | _p2, err = BytePtrFromString(fstype) |
| 2767 | if err != nil { |
| 2768 | return |
| 2769 | } |
| 2770 | var _p3 *byte |
| 2771 | _p3, err = BytePtrFromString(data) |
| 2772 | if err != nil { |
| 2773 | return |
| 2774 | } |
| 2775 | runtime.EnterSyscall() |
| 2776 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MOUNT1_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(_p3))) |
| 2777 | runtime.ExitSyscall() |
| 2778 | if int64(r0) == -1 { |
| 2779 | err = errnoErr2(e1, e2) |
| 2780 | } |
| 2781 | return |
| 2782 | } |
| 2783 | |
| 2784 | //go:nosplit |
| 2785 | func get_MountAddr() *(func(source string, target string, fstype string, flags uintptr, data string) (err error)) |
| 2786 | |
| 2787 | var Mount = enter_Mount |
| 2788 | |
| 2789 | func enter_Mount(source string, target string, fstype string, flags uintptr, data string) (err error) { |
| 2790 | funcref := get_MountAddr() |
| 2791 | if validMount() { |
| 2792 | *funcref = impl_Mount |
| 2793 | } else { |
| 2794 | *funcref = legacyMount |
| 2795 | } |
| 2796 | return (*funcref)(source, target, fstype, flags, data) |
| 2797 | } |
| 2798 | |
| 2799 | func legacyMount(source string, target string, fstype string, flags uintptr, data string) (err error) { |
| 2800 | if needspace := 8 - len(fstype); needspace <= 0 { |
| 2801 | fstype = fstype[0:8] |
| 2802 | } else { |
| 2803 | fstype += " "[0:needspace] |
| 2804 | } |
| 2805 | return mount_LE(target, source, fstype, uint32(flags), int32(len(data)), data) |
| 2806 | } |
| 2807 | |
| 2808 | func validMount() bool { |
| 2809 | if funcptrtest(GetZosLibVec()+SYS___MOUNT1_A<<4, "") == 0 { |
| 2810 | if name, err := getLeFuncName(GetZosLibVec() + SYS___MOUNT1_A<<4); err == nil { |
| 2811 | return name == "__mount1_a" |
| 2812 | } |
| 2813 | } |
| 2814 | return false |
| 2815 | } |
| 2816 | |
| 2817 | // Mount end |
| 2818 | |
| 2819 | // Unmount begin |
| 2820 | func impl_Unmount(target string, flags int) (err error) { |
| 2821 | var _p0 *byte |
| 2822 | _p0, err = BytePtrFromString(target) |
| 2823 | if err != nil { |
| 2824 | return |
| 2825 | } |
| 2826 | runtime.EnterSyscall() |
| 2827 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___UMOUNT2_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(flags)) |
| 2828 | runtime.ExitSyscall() |
| 2829 | if int64(r0) == -1 { |
| 2830 | err = errnoErr2(e1, e2) |
| 2831 | } |
| 2832 | return |
| 2833 | } |
| 2834 | |
| 2835 | //go:nosplit |
| 2836 | func get_UnmountAddr() *(func(target string, flags int) (err error)) |
| 2837 | |
| 2838 | var Unmount = enter_Unmount |
| 2839 | |
| 2840 | func enter_Unmount(target string, flags int) (err error) { |
| 2841 | funcref := get_UnmountAddr() |
| 2842 | if funcptrtest(GetZosLibVec()+SYS___UMOUNT2_A<<4, "") == 0 { |
| 2843 | *funcref = impl_Unmount |
| 2844 | } else { |
| 2845 | *funcref = legacyUnmount |
| 2846 | } |
| 2847 | return (*funcref)(target, flags) |
| 2848 | } |
| 2849 | |
| 2850 | func legacyUnmount(name string, mtm int) (err error) { |
| 2851 | // mountpoint is always a full path and starts with a '/' |
| 2852 | // check if input string is not a mountpoint but a filesystem name |
| 2853 | if name[0] != '/' { |
| 2854 | return unmount_LE(name, mtm) |
| 2855 | } |
| 2856 | // treat name as mountpoint |
| 2857 | b2s := func(arr []byte) string { |
| 2858 | var str string |
| 2859 | for i := 0; i < len(arr); i++ { |
| 2860 | if arr[i] == 0 { |
| 2861 | str = string(arr[:i]) |
| 2862 | break |
| 2863 | } |
| 2864 | } |
| 2865 | return str |
| 2866 | } |
| 2867 | var buffer struct { |
| 2868 | header W_Mnth |
| 2869 | fsinfo [64]W_Mntent |
| 2870 | } |
| 2871 | fs_count, err := W_Getmntent_A((*byte)(unsafe.Pointer(&buffer)), int(unsafe.Sizeof(buffer))) |
| 2872 | if err == nil { |
| 2873 | err = EINVAL |
| 2874 | for i := 0; i < fs_count; i++ { |
| 2875 | if b2s(buffer.fsinfo[i].Mountpoint[:]) == name { |
| 2876 | err = unmount_LE(b2s(buffer.fsinfo[i].Fsname[:]), mtm) |
| 2877 | break |
| 2878 | } |
| 2879 | } |
| 2880 | } else if fs_count == 0 { |
| 2881 | err = EINVAL |
| 2882 | } |
| 2883 | return err |
| 2884 | } |
| 2885 | |
| 2886 | // Unmount end |
| 2887 | |
| 2888 | func direntIno(buf []byte) (uint64, bool) { |
| 2889 | return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino)) |
| 2890 | } |
| 2891 | |
| 2892 | func direntReclen(buf []byte) (uint64, bool) { |
| 2893 | return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) |
| 2894 | } |
| 2895 | |
| 2896 | func direntNamlen(buf []byte) (uint64, bool) { |
| 2897 | reclen, ok := direntReclen(buf) |
| 2898 | if !ok { |
| 2899 | return 0, false |
| 2900 | } |
| 2901 | return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true |
| 2902 | } |
| 2903 | |
| 2904 | func direntLeToDirentUnix(dirent *direntLE, dir uintptr, path string) (Dirent, error) { |
| 2905 | var d Dirent |
| 2906 | |
| 2907 | d.Ino = uint64(dirent.Ino) |
| 2908 | offset, err := Telldir(dir) |
| 2909 | if err != nil { |
| 2910 | return d, err |
| 2911 | } |
| 2912 | |
| 2913 | d.Off = int64(offset) |
| 2914 | s := string(bytes.Split(dirent.Name[:], []byte{0})[0]) |
| 2915 | copy(d.Name[:], s) |
| 2916 | |
| 2917 | d.Reclen = uint16(24 + len(d.NameString())) |
| 2918 | var st Stat_t |
| 2919 | path = path + "/" + s |
| 2920 | err = Lstat(path, &st) |
| 2921 | if err != nil { |
| 2922 | return d, err |
| 2923 | } |
| 2924 | |
| 2925 | d.Type = uint8(st.Mode >> 24) |
| 2926 | return d, err |
| 2927 | } |
| 2928 | |
| 2929 | func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) { |
| 2930 | // Simulation of Getdirentries port from the Darwin implementation. |
| 2931 | // COMMENTS FROM DARWIN: |
| 2932 | // It's not the full required semantics, but should handle the case |
| 2933 | // of calling Getdirentries or ReadDirent repeatedly. |
| 2934 | // It won't handle assigning the results of lseek to *basep, or handle |
| 2935 | // the directory being edited underfoot. |
| 2936 | |
| 2937 | skip, err := Seek(fd, 0, 1 /* SEEK_CUR */) |
| 2938 | if err != nil { |
| 2939 | return 0, err |
| 2940 | } |
| 2941 | |
| 2942 | // Get path from fd to avoid unavailable call (fdopendir) |
| 2943 | path, err := ZosFdToPath(fd) |
| 2944 | if err != nil { |
| 2945 | return 0, err |
| 2946 | } |
| 2947 | d, err := Opendir(path) |
| 2948 | if err != nil { |
| 2949 | return 0, err |
| 2950 | } |
| 2951 | defer Closedir(d) |
| 2952 | |
| 2953 | var cnt int64 |
| 2954 | for { |
| 2955 | var entryLE direntLE |
| 2956 | var entrypLE *direntLE |
| 2957 | e := Readdir_r(d, &entryLE, &entrypLE) |
| 2958 | if e != nil { |
| 2959 | return n, e |
| 2960 | } |
| 2961 | if entrypLE == nil { |
| 2962 | break |
| 2963 | } |
| 2964 | if skip > 0 { |
| 2965 | skip-- |
| 2966 | cnt++ |
| 2967 | continue |
| 2968 | } |
| 2969 | |
| 2970 | // Dirent on zos has a different structure |
| 2971 | entry, e := direntLeToDirentUnix(&entryLE, d, path) |
| 2972 | if e != nil { |
| 2973 | return n, e |
| 2974 | } |
| 2975 | |
| 2976 | reclen := int(entry.Reclen) |
| 2977 | if reclen > len(buf) { |
| 2978 | // Not enough room. Return for now. |
| 2979 | // The counter will let us know where we should start up again. |
| 2980 | // Note: this strategy for suspending in the middle and |
| 2981 | // restarting is O(n^2) in the length of the directory. Oh well. |
| 2982 | break |
| 2983 | } |
| 2984 | |
| 2985 | // Copy entry into return buffer. |
| 2986 | s := unsafe.Slice((*byte)(unsafe.Pointer(&entry)), reclen) |
| 2987 | copy(buf, s) |
| 2988 | |
| 2989 | buf = buf[reclen:] |
| 2990 | n += reclen |
| 2991 | cnt++ |
| 2992 | } |
| 2993 | // Set the seek offset of the input fd to record |
| 2994 | // how many files we've already returned. |
| 2995 | _, err = Seek(fd, cnt, 0 /* SEEK_SET */) |
| 2996 | if err != nil { |
| 2997 | return n, err |
| 2998 | } |
| 2999 | |
| 3000 | return n, nil |
| 3001 | } |
| 3002 | |
| 3003 | func Err2ad() (eadd *int) { |
| 3004 | r0, _, _ := CallLeFuncWithErr(GetZosLibVec() + SYS___ERR2AD<<4) |
| 3005 | eadd = (*int)(unsafe.Pointer(r0)) |
| 3006 | return |
| 3007 | } |
| 3008 | |
| 3009 | func ZosConsolePrintf(format string, v ...interface{}) (int, error) { |
| 3010 | type __cmsg struct { |
| 3011 | _ uint16 |
| 3012 | _ [2]uint8 |
| 3013 | __msg_length uint32 |
| 3014 | __msg uintptr |
| 3015 | _ [4]uint8 |
| 3016 | } |
| 3017 | msg := fmt.Sprintf(format, v...) |
| 3018 | strptr := unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&msg)).Data) |
| 3019 | len := (*reflect.StringHeader)(unsafe.Pointer(&msg)).Len |
| 3020 | cmsg := __cmsg{__msg_length: uint32(len), __msg: uintptr(strptr)} |
| 3021 | cmd := uint32(0) |
| 3022 | runtime.EnterSyscall() |
| 3023 | rc, err2, err1 := CallLeFuncWithErr(GetZosLibVec()+SYS_____CONSOLE_A<<4, uintptr(unsafe.Pointer(&cmsg)), 0, uintptr(unsafe.Pointer(&cmd))) |
| 3024 | runtime.ExitSyscall() |
| 3025 | if rc != 0 { |
| 3026 | return 0, fmt.Errorf("%s (errno2=0x%x)\n", err1.Error(), err2) |
| 3027 | } |
| 3028 | return 0, nil |
| 3029 | } |
| 3030 | func ZosStringToEbcdicBytes(str string, nullterm bool) (ebcdicBytes []byte) { |
| 3031 | if nullterm { |
| 3032 | ebcdicBytes = []byte(str + "\x00") |
| 3033 | } else { |
| 3034 | ebcdicBytes = []byte(str) |
| 3035 | } |
| 3036 | A2e(ebcdicBytes) |
| 3037 | return |
| 3038 | } |
| 3039 | func ZosEbcdicBytesToString(b []byte, trimRight bool) (str string) { |
| 3040 | res := make([]byte, len(b)) |
| 3041 | copy(res, b) |
| 3042 | E2a(res) |
| 3043 | if trimRight { |
| 3044 | str = string(bytes.TrimRight(res, " \x00")) |
| 3045 | } else { |
| 3046 | str = string(res) |
| 3047 | } |
| 3048 | return |
| 3049 | } |
| 3050 | |
| 3051 | func fdToPath(dirfd int) (path string, err error) { |
| 3052 | var buffer [1024]byte |
| 3053 | // w_ctrl() |
| 3054 | ret := runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS_W_IOCTL<<4, |
| 3055 | []uintptr{uintptr(dirfd), 17, 1024, uintptr(unsafe.Pointer(&buffer[0]))}) |
| 3056 | if ret == 0 { |
| 3057 | zb := bytes.IndexByte(buffer[:], 0) |
| 3058 | if zb == -1 { |
| 3059 | zb = len(buffer) |
| 3060 | } |
| 3061 | // __e2a_l() |
| 3062 | runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, |
| 3063 | []uintptr{uintptr(unsafe.Pointer(&buffer[0])), uintptr(zb)}) |
| 3064 | return string(buffer[:zb]), nil |
| 3065 | } |
| 3066 | // __errno() |
| 3067 | errno := int(*(*int32)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, |
| 3068 | []uintptr{})))) |
| 3069 | // __errno2() |
| 3070 | errno2 := int(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO2<<4, |
| 3071 | []uintptr{})) |
| 3072 | // strerror_r() |
| 3073 | ret = runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS_STRERROR_R<<4, |
| 3074 | []uintptr{uintptr(errno), uintptr(unsafe.Pointer(&buffer[0])), 1024}) |
| 3075 | if ret == 0 { |
| 3076 | zb := bytes.IndexByte(buffer[:], 0) |
| 3077 | if zb == -1 { |
| 3078 | zb = len(buffer) |
| 3079 | } |
| 3080 | return "", fmt.Errorf("%s (errno2=0x%x)", buffer[:zb], errno2) |
| 3081 | } else { |
| 3082 | return "", fmt.Errorf("fdToPath errno %d (errno2=0x%x)", errno, errno2) |
| 3083 | } |
| 3084 | } |
| 3085 | |
| 3086 | func impl_Mkfifoat(dirfd int, path string, mode uint32) (err error) { |
| 3087 | var _p0 *byte |
| 3088 | _p0, err = BytePtrFromString(path) |
| 3089 | if err != nil { |
| 3090 | return |
| 3091 | } |
| 3092 | runtime.EnterSyscall() |
| 3093 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MKFIFOAT_A<<4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) |
| 3094 | runtime.ExitSyscall() |
| 3095 | if int64(r0) == -1 { |
| 3096 | err = errnoErr2(e1, e2) |
| 3097 | } |
| 3098 | return |
| 3099 | } |
| 3100 | |
| 3101 | //go:nosplit |
| 3102 | func get_MkfifoatAddr() *(func(dirfd int, path string, mode uint32) (err error)) |
| 3103 | |
| 3104 | var Mkfifoat = enter_Mkfifoat |
| 3105 | |
| 3106 | func enter_Mkfifoat(dirfd int, path string, mode uint32) (err error) { |
| 3107 | funcref := get_MkfifoatAddr() |
| 3108 | if funcptrtest(GetZosLibVec()+SYS___MKFIFOAT_A<<4, "") == 0 { |
| 3109 | *funcref = impl_Mkfifoat |
| 3110 | } else { |
| 3111 | *funcref = legacy_Mkfifoat |
| 3112 | } |
| 3113 | return (*funcref)(dirfd, path, mode) |
| 3114 | } |
| 3115 | |
| 3116 | func legacy_Mkfifoat(dirfd int, path string, mode uint32) (err error) { |
| 3117 | dirname, err := ZosFdToPath(dirfd) |
| 3118 | if err != nil { |
| 3119 | return err |
| 3120 | } |
| 3121 | return Mkfifo(dirname+"/"+path, mode) |
| 3122 | } |
| 3123 | |
| 3124 | //sys Posix_openpt(oflag int) (fd int, err error) = SYS_POSIX_OPENPT |
| 3125 | //sys Grantpt(fildes int) (rc int, err error) = SYS_GRANTPT |
| 3126 | //sys Unlockpt(fildes int) (rc int, err error) = SYS_UNLOCKPT |
| 3127 | |
| 3128 | func fcntlAsIs(fd uintptr, cmd int, arg uintptr) (val int, err error) { |
| 3129 | runtime.EnterSyscall() |
| 3130 | r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FCNTL<<4, uintptr(fd), uintptr(cmd), arg) |
| 3131 | runtime.ExitSyscall() |
| 3132 | val = int(r0) |
| 3133 | if int64(r0) == -1 { |
| 3134 | err = errnoErr2(e1, e2) |
| 3135 | } |
| 3136 | return |
| 3137 | } |
| 3138 | |
| 3139 | func Fcntl(fd uintptr, cmd int, op interface{}) (ret int, err error) { |
| 3140 | switch op.(type) { |
| 3141 | case *Flock_t: |
| 3142 | err = FcntlFlock(fd, cmd, op.(*Flock_t)) |
| 3143 | if err != nil { |
| 3144 | ret = -1 |
| 3145 | } |
| 3146 | return |
| 3147 | case int: |
| 3148 | return FcntlInt(fd, cmd, op.(int)) |
| 3149 | case *F_cnvrt: |
| 3150 | return fcntlAsIs(fd, cmd, uintptr(unsafe.Pointer(op.(*F_cnvrt)))) |
| 3151 | case unsafe.Pointer: |
| 3152 | return fcntlAsIs(fd, cmd, uintptr(op.(unsafe.Pointer))) |
| 3153 | default: |
| 3154 | return -1, EINVAL |
| 3155 | } |
| 3156 | return |
| 3157 | } |
| 3158 | |
| 3159 | func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { |
| 3160 | if raceenabled { |
| 3161 | raceReleaseMerge(unsafe.Pointer(&ioSync)) |
| 3162 | } |
| 3163 | return sendfile(outfd, infd, offset, count) |
| 3164 | } |
| 3165 | |
| 3166 | func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { |
| 3167 | // TODO: use LE call instead if the call is implemented |
| 3168 | originalOffset, err := Seek(infd, 0, SEEK_CUR) |
| 3169 | if err != nil { |
| 3170 | return -1, err |
| 3171 | } |
| 3172 | //start reading data from in_fd |
| 3173 | if offset != nil { |
| 3174 | _, err := Seek(infd, *offset, SEEK_SET) |
| 3175 | if err != nil { |
| 3176 | return -1, err |
| 3177 | } |
| 3178 | } |
| 3179 | |
| 3180 | buf := make([]byte, count) |
| 3181 | readBuf := make([]byte, 0) |
| 3182 | var n int = 0 |
| 3183 | for i := 0; i < count; i += n { |
| 3184 | n, err := Read(infd, buf) |
| 3185 | if n == 0 { |
| 3186 | if err != nil { |
| 3187 | return -1, err |
| 3188 | } else { // EOF |
| 3189 | break |
| 3190 | } |
| 3191 | } |
| 3192 | readBuf = append(readBuf, buf...) |
| 3193 | buf = buf[0:0] |
| 3194 | } |
| 3195 | |
| 3196 | n2, err := Write(outfd, readBuf) |
| 3197 | if err != nil { |
| 3198 | return -1, err |
| 3199 | } |
| 3200 | |
| 3201 | //When sendfile() returns, this variable will be set to the |
| 3202 | // offset of the byte following the last byte that was read. |
| 3203 | if offset != nil { |
| 3204 | *offset = *offset + int64(n) |
| 3205 | // If offset is not NULL, then sendfile() does not modify the file |
| 3206 | // offset of in_fd |
| 3207 | _, err := Seek(infd, originalOffset, SEEK_SET) |
| 3208 | if err != nil { |
| 3209 | return -1, err |
| 3210 | } |
| 3211 | } |
| 3212 | return n2, nil |
| 3213 | } |