diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_zos_s390x.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_zos_s390x.go | 3213 |
1 files changed, 3213 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_zos_s390x.go b/vendor/golang.org/x/sys/unix/syscall_zos_s390x.go new file mode 100644 index 0000000..7bf5c04 --- /dev/null +++ b/vendor/golang.org/x/sys/unix/syscall_zos_s390x.go @@ -0,0 +1,3213 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build zos && s390x + +// Many of the following syscalls are not available on all versions of z/OS. +// Some missing calls have legacy implementations/simulations but others +// will be missing completely. To achieve consistent failing behaviour on +// legacy systems, we first test the function pointer via a safeloading +// mechanism to see if the function exists on a given system. Then execution +// is branched to either continue the function call, or return an error. + +package unix + +import ( + "bytes" + "fmt" + "os" + "reflect" + "regexp" + "runtime" + "sort" + "strings" + "sync" + "syscall" + "unsafe" +) + +//go:noescape +func initZosLibVec() + +//go:noescape +func GetZosLibVec() uintptr + +func init() { + initZosLibVec() + r0, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS_____GETENV_A<<4, uintptr(unsafe.Pointer(&([]byte("__ZOS_XSYSTRACE\x00"))[0]))) + if r0 != 0 { + n, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___ATOI_A<<4, r0) + ZosTraceLevel = int(n) + r0, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS_____GETENV_A<<4, uintptr(unsafe.Pointer(&([]byte("__ZOS_XSYSTRACEFD\x00"))[0]))) + if r0 != 0 { + fd, _, _ := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___ATOI_A<<4, r0) + f := os.NewFile(fd, "zostracefile") + if f != nil { + ZosTracefile = f + } + } + + } +} + +//go:noescape +func CallLeFuncWithErr(funcdesc uintptr, parms ...uintptr) (ret, errno2 uintptr, err Errno) + +//go:noescape +func CallLeFuncWithPtrReturn(funcdesc uintptr, parms ...uintptr) (ret, errno2 uintptr, err Errno) + +// ------------------------------- +// pointer validity test +// good pointer returns 0 +// bad pointer returns 1 +// +//go:nosplit +func ptrtest(uintptr) uint64 + +// Load memory at ptr location with error handling if the location is invalid +// +//go:noescape +func safeload(ptr uintptr) (value uintptr, error uintptr) + +const ( + entrypointLocationOffset = 8 // From function descriptor + + xplinkEyecatcher = 0x00c300c500c500f1 // ".C.E.E.1" + eyecatcherOffset = 16 // From function entrypoint (negative) + ppa1LocationOffset = 8 // From function entrypoint (negative) + + nameLenOffset = 0x14 // From PPA1 start + nameOffset = 0x16 // From PPA1 start +) + +func getPpaOffset(funcptr uintptr) int64 { + entrypoint, err := safeload(funcptr + entrypointLocationOffset) + if err != 0 { + return -1 + } + + // XPLink functions have ".C.E.E.1" as the first 8 bytes (EBCDIC) + val, err := safeload(entrypoint - eyecatcherOffset) + if err != 0 { + return -1 + } + if val != xplinkEyecatcher { + return -1 + } + + ppaoff, err := safeload(entrypoint - ppa1LocationOffset) + if err != 0 { + return -1 + } + + ppaoff >>= 32 + return int64(ppaoff) +} + +//------------------------------- +// function descriptor pointer validity test +// good pointer returns 0 +// bad pointer returns 1 + +// TODO: currently mksyscall_zos_s390x.go generate empty string for funcName +// have correct funcName pass to the funcptrtest function +func funcptrtest(funcptr uintptr, funcName string) uint64 { + entrypoint, err := safeload(funcptr + entrypointLocationOffset) + if err != 0 { + return 1 + } + + ppaoff := getPpaOffset(funcptr) + if ppaoff == -1 { + return 1 + } + + // PPA1 offset value is from the start of the entire function block, not the entrypoint + ppa1 := (entrypoint - eyecatcherOffset) + uintptr(ppaoff) + + nameLen, err := safeload(ppa1 + nameLenOffset) + if err != 0 { + return 1 + } + + nameLen >>= 48 + if nameLen > 128 { + return 1 + } + + // no function name input to argument end here + if funcName == "" { + return 0 + } + + var funcname [128]byte + for i := 0; i < int(nameLen); i += 8 { + v, err := safeload(ppa1 + nameOffset + uintptr(i)) + if err != 0 { + return 1 + } + funcname[i] = byte(v >> 56) + funcname[i+1] = byte(v >> 48) + funcname[i+2] = byte(v >> 40) + funcname[i+3] = byte(v >> 32) + funcname[i+4] = byte(v >> 24) + funcname[i+5] = byte(v >> 16) + funcname[i+6] = byte(v >> 8) + funcname[i+7] = byte(v) + } + + runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, // __e2a_l + []uintptr{uintptr(unsafe.Pointer(&funcname[0])), nameLen}) + + name := string(funcname[:nameLen]) + if name != funcName { + return 1 + } + + return 0 +} + +// For detection of capabilities on a system. +// Is function descriptor f a valid function? +func isValidLeFunc(f uintptr) error { + ret := funcptrtest(f, "") + if ret != 0 { + return fmt.Errorf("Bad pointer, not an LE function ") + } + return nil +} + +// Retrieve function name from descriptor +func getLeFuncName(f uintptr) (string, error) { + // assume it has been checked, only check ppa1 validity here + entry := ((*[2]uintptr)(unsafe.Pointer(f)))[1] + preamp := ((*[4]uint32)(unsafe.Pointer(entry - eyecatcherOffset))) + + offsetPpa1 := preamp[2] + if offsetPpa1 > 0x0ffff { + return "", fmt.Errorf("PPA1 offset seems too big 0x%x\n", offsetPpa1) + } + + ppa1 := uintptr(unsafe.Pointer(preamp)) + uintptr(offsetPpa1) + res := ptrtest(ppa1) + if res != 0 { + return "", fmt.Errorf("PPA1 address not valid") + } + + size := *(*uint16)(unsafe.Pointer(ppa1 + nameLenOffset)) + if size > 128 { + return "", fmt.Errorf("Function name seems too long, length=%d\n", size) + } + + var name [128]byte + funcname := (*[128]byte)(unsafe.Pointer(ppa1 + nameOffset)) + copy(name[0:size], funcname[0:size]) + + runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, // __e2a_l + []uintptr{uintptr(unsafe.Pointer(&name[0])), uintptr(size)}) + + return string(name[:size]), nil +} + +// Check z/OS version +func zosLeVersion() (version, release uint32) { + p1 := (*(*uintptr)(unsafe.Pointer(uintptr(1208)))) >> 32 + p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 88))) + p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 8))) + p1 = *(*uintptr)(unsafe.Pointer(uintptr(p1 + 984))) + vrm := *(*uint32)(unsafe.Pointer(p1 + 80)) + version = (vrm & 0x00ff0000) >> 16 + release = (vrm & 0x0000ff00) >> 8 + return +} + +// returns a zos C FILE * for stdio fd 0, 1, 2 +func ZosStdioFilep(fd int32) uintptr { + 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)))))))) +} + +func copyStat(stat *Stat_t, statLE *Stat_LE_t) { + stat.Dev = uint64(statLE.Dev) + stat.Ino = uint64(statLE.Ino) + stat.Nlink = uint64(statLE.Nlink) + stat.Mode = uint32(statLE.Mode) + stat.Uid = uint32(statLE.Uid) + stat.Gid = uint32(statLE.Gid) + stat.Rdev = uint64(statLE.Rdev) + stat.Size = statLE.Size + stat.Atim.Sec = int64(statLE.Atim) + stat.Atim.Nsec = 0 //zos doesn't return nanoseconds + stat.Mtim.Sec = int64(statLE.Mtim) + stat.Mtim.Nsec = 0 //zos doesn't return nanoseconds + stat.Ctim.Sec = int64(statLE.Ctim) + stat.Ctim.Nsec = 0 //zos doesn't return nanoseconds + stat.Blksize = int64(statLE.Blksize) + stat.Blocks = statLE.Blocks +} + +func svcCall(fnptr unsafe.Pointer, argv *unsafe.Pointer, dsa *uint64) +func svcLoad(name *byte) unsafe.Pointer +func svcUnload(name *byte, fnptr unsafe.Pointer) int64 + +func (d *Dirent) NameString() string { + if d == nil { + return "" + } + s := string(d.Name[:]) + idx := strings.IndexByte(s, 0) + if idx == -1 { + return s + } else { + return s[:idx] + } +} + +func DecodeData(dest []byte, sz int, val uint64) { + for i := 0; i < sz; i++ { + dest[sz-1-i] = byte((val >> (uint64(i * 8))) & 0xff) + } +} + +func EncodeData(data []byte) uint64 { + var value uint64 + sz := len(data) + for i := 0; i < sz; i++ { + value |= uint64(data[i]) << uint64(((sz - i - 1) * 8)) + } + return value +} + +func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { + if sa.Port < 0 || sa.Port > 0xFFFF { + return nil, 0, EINVAL + } + sa.raw.Len = SizeofSockaddrInet4 + sa.raw.Family = AF_INET + p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) + p[0] = byte(sa.Port >> 8) + p[1] = byte(sa.Port) + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil +} + +func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) { + if sa.Port < 0 || sa.Port > 0xFFFF { + return nil, 0, EINVAL + } + sa.raw.Len = SizeofSockaddrInet6 + sa.raw.Family = AF_INET6 + p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) + p[0] = byte(sa.Port >> 8) + p[1] = byte(sa.Port) + sa.raw.Scope_id = sa.ZoneId + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil +} + +func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) { + name := sa.Name + n := len(name) + if n >= len(sa.raw.Path) || n == 0 { + return nil, 0, EINVAL + } + sa.raw.Len = byte(3 + n) // 2 for Family, Len; 1 for NUL + sa.raw.Family = AF_UNIX + for i := 0; i < n; i++ { + sa.raw.Path[i] = int8(name[i]) + } + return unsafe.Pointer(&sa.raw), _Socklen(sa.raw.Len), nil +} + +func anyToSockaddr(_ int, rsa *RawSockaddrAny) (Sockaddr, error) { + // TODO(neeilan): Implement use of first param (fd) + switch rsa.Addr.Family { + case AF_UNIX: + pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) + sa := new(SockaddrUnix) + // For z/OS, only replace NUL with @ when the + // length is not zero. + if pp.Len != 0 && pp.Path[0] == 0 { + // "Abstract" Unix domain socket. + // Rewrite leading NUL as @ for textual display. + // (This is the standard convention.) + // Not friendly to overwrite in place, + // but the callers below don't care. + pp.Path[0] = '@' + } + + // Assume path ends at NUL. + // + // For z/OS, the length of the name is a field + // in the structure. To be on the safe side, we + // will still scan the name for a NUL but only + // to the length provided in the structure. + // + // This is not technically the Linux semantics for + // abstract Unix domain sockets--they are supposed + // to be uninterpreted fixed-size binary blobs--but + // everyone uses this convention. + n := 0 + for n < int(pp.Len) && pp.Path[n] != 0 { + n++ + } + sa.Name = string(unsafe.Slice((*byte)(unsafe.Pointer(&pp.Path[0])), n)) + return sa, nil + + case AF_INET: + pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) + sa := new(SockaddrInet4) + p := (*[2]byte)(unsafe.Pointer(&pp.Port)) + sa.Port = int(p[0])<<8 + int(p[1]) + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, nil + + case AF_INET6: + pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) + sa := new(SockaddrInet6) + p := (*[2]byte)(unsafe.Pointer(&pp.Port)) + sa.Port = int(p[0])<<8 + int(p[1]) + sa.ZoneId = pp.Scope_id + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, nil + } + return nil, EAFNOSUPPORT +} + +func Accept(fd int) (nfd int, sa Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + nfd, err = accept(fd, &rsa, &len) + if err != nil { + return + } + // TODO(neeilan): Remove 0 in call + sa, err = anyToSockaddr(0, &rsa) + if err != nil { + Close(nfd) + nfd = 0 + } + return +} + +func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + nfd, err = accept4(fd, &rsa, &len, flags) + if err != nil { + return + } + if len > SizeofSockaddrAny { + panic("RawSockaddrAny too small") + } + // TODO(neeilan): Remove 0 in call + sa, err = anyToSockaddr(0, &rsa) + if err != nil { + Close(nfd) + nfd = 0 + } + return +} + +func Ctermid() (tty string, err error) { + var termdev [1025]byte + runtime.EnterSyscall() + r0, err2, err1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___CTERMID_A<<4, uintptr(unsafe.Pointer(&termdev[0]))) + runtime.ExitSyscall() + if r0 == 0 { + return "", fmt.Errorf("%s (errno2=0x%x)\n", err1.Error(), err2) + } + s := string(termdev[:]) + idx := strings.Index(s, string(rune(0))) + if idx == -1 { + tty = s + } else { + tty = s[:idx] + } + return +} + +func (iov *Iovec) SetLen(length int) { + iov.Len = uint64(length) +} + +func (msghdr *Msghdr) SetControllen(length int) { + msghdr.Controllen = int32(length) +} + +func (cmsg *Cmsghdr) SetLen(length int) { + cmsg.Len = int32(length) +} + +//sys fcntl(fd int, cmd int, arg int) (val int, err error) +//sys Flistxattr(fd int, dest []byte) (sz int, err error) = SYS___FLISTXATTR_A +//sys Fremovexattr(fd int, attr string) (err error) = SYS___FREMOVEXATTR_A +//sys read(fd int, p []byte) (n int, err error) +//sys write(fd int, p []byte) (n int, err error) + +//sys Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) = SYS___FGETXATTR_A +//sys Fsetxattr(fd int, attr string, data []byte, flag int) (err error) = SYS___FSETXATTR_A + +//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) = SYS___ACCEPT_A +//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = SYS___ACCEPT4_A +//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = SYS___BIND_A +//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = SYS___CONNECT_A +//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) +//sysnb setgroups(n int, list *_Gid_t) (err error) +//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) +//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) +//sysnb socket(domain int, typ int, proto int) (fd int, err error) +//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) +//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = SYS___GETPEERNAME_A +//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = SYS___GETSOCKNAME_A +//sys Removexattr(path string, attr string) (err error) = SYS___REMOVEXATTR_A +//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) = SYS___RECVFROM_A +//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) = SYS___SENDTO_A +//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = SYS___RECVMSG_A +//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = SYS___SENDMSG_A +//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) = SYS_MMAP +//sys munmap(addr uintptr, length uintptr) (err error) = SYS_MUNMAP +//sys ioctl(fd int, req int, arg uintptr) (err error) = SYS_IOCTL +//sys ioctlPtr(fd int, req int, arg unsafe.Pointer) (err error) = SYS_IOCTL +//sys shmat(id int, addr uintptr, flag int) (ret uintptr, err error) = SYS_SHMAT +//sys shmctl(id int, cmd int, buf *SysvShmDesc) (result int, err error) = SYS_SHMCTL64 +//sys shmdt(addr uintptr) (err error) = SYS_SHMDT +//sys shmget(key int, size int, flag int) (id int, err error) = SYS_SHMGET + +//sys Access(path string, mode uint32) (err error) = SYS___ACCESS_A +//sys Chdir(path string) (err error) = SYS___CHDIR_A +//sys Chown(path string, uid int, gid int) (err error) = SYS___CHOWN_A +//sys Chmod(path string, mode uint32) (err error) = SYS___CHMOD_A +//sys Creat(path string, mode uint32) (fd int, err error) = SYS___CREAT_A +//sys Dup(oldfd int) (fd int, err error) +//sys Dup2(oldfd int, newfd int) (err error) +//sys Dup3(oldfd int, newfd int, flags int) (err error) = SYS_DUP3 +//sys Dirfd(dirp uintptr) (fd int, err error) = SYS_DIRFD +//sys EpollCreate(size int) (fd int, err error) = SYS_EPOLL_CREATE +//sys EpollCreate1(flags int) (fd int, err error) = SYS_EPOLL_CREATE1 +//sys EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error) = SYS_EPOLL_CTL +//sys EpollPwait(epfd int, events []EpollEvent, msec int, sigmask *int) (n int, err error) = SYS_EPOLL_PWAIT +//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_WAIT +//sys Errno2() (er2 int) = SYS___ERRNO2 +//sys Eventfd(initval uint, flags int) (fd int, err error) = SYS_EVENTFD +//sys Exit(code int) +//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) = SYS___FACCESSAT_A + +func Faccessat2(dirfd int, path string, mode uint32, flags int) (err error) { + return Faccessat(dirfd, path, mode, flags) +} + +//sys Fchdir(fd int) (err error) +//sys Fchmod(fd int, mode uint32) (err error) +//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) = SYS___FCHMODAT_A +//sys Fchown(fd int, uid int, gid int) (err error) +//sys Fchownat(fd int, path string, uid int, gid int, flags int) (err error) = SYS___FCHOWNAT_A +//sys FcntlInt(fd uintptr, cmd int, arg int) (retval int, err error) = SYS_FCNTL +//sys Fdatasync(fd int) (err error) = SYS_FDATASYNC +//sys fstat(fd int, stat *Stat_LE_t) (err error) +//sys fstatat(dirfd int, path string, stat *Stat_LE_t, flags int) (err error) = SYS___FSTATAT_A + +func Fstat(fd int, stat *Stat_t) (err error) { + var statLE Stat_LE_t + err = fstat(fd, &statLE) + copyStat(stat, &statLE) + return +} + +func Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) { + var statLE Stat_LE_t + err = fstatat(dirfd, path, &statLE, flags) + copyStat(stat, &statLE) + return +} + +func impl_Getxattr(path string, attr string, dest []byte) (sz int, err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + var _p1 *byte + _p1, err = BytePtrFromString(attr) + if err != nil { + return + } + var _p2 unsafe.Pointer + if len(dest) > 0 { + _p2 = unsafe.Pointer(&dest[0]) + } else { + _p2 = unsafe.Pointer(&_zero) + } + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___GETXATTR_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest))) + sz = int(r0) + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//go:nosplit +func get_GetxattrAddr() *(func(path string, attr string, dest []byte) (sz int, err error)) + +var Getxattr = enter_Getxattr + +func enter_Getxattr(path string, attr string, dest []byte) (sz int, err error) { + funcref := get_GetxattrAddr() + if validGetxattr() { + *funcref = impl_Getxattr + } else { + *funcref = error_Getxattr + } + return (*funcref)(path, attr, dest) +} + +func error_Getxattr(path string, attr string, dest []byte) (sz int, err error) { + return -1, ENOSYS +} + +func validGetxattr() bool { + if funcptrtest(GetZosLibVec()+SYS___GETXATTR_A<<4, "") == 0 { + if name, err := getLeFuncName(GetZosLibVec() + SYS___GETXATTR_A<<4); err == nil { + return name == "__getxattr_a" + } + } + return false +} + +//sys Lgetxattr(link string, attr string, dest []byte) (sz int, err error) = SYS___LGETXATTR_A +//sys Lsetxattr(path string, attr string, data []byte, flags int) (err error) = SYS___LSETXATTR_A + +func impl_Setxattr(path string, attr string, data []byte, flags int) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + var _p1 *byte + _p1, err = BytePtrFromString(attr) + if err != nil { + return + } + var _p2 unsafe.Pointer + if len(data) > 0 { + _p2 = unsafe.Pointer(&data[0]) + } else { + _p2 = unsafe.Pointer(&_zero) + } + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___SETXATTR_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags)) + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//go:nosplit +func get_SetxattrAddr() *(func(path string, attr string, data []byte, flags int) (err error)) + +var Setxattr = enter_Setxattr + +func enter_Setxattr(path string, attr string, data []byte, flags int) (err error) { + funcref := get_SetxattrAddr() + if validSetxattr() { + *funcref = impl_Setxattr + } else { + *funcref = error_Setxattr + } + return (*funcref)(path, attr, data, flags) +} + +func error_Setxattr(path string, attr string, data []byte, flags int) (err error) { + return ENOSYS +} + +func validSetxattr() bool { + if funcptrtest(GetZosLibVec()+SYS___SETXATTR_A<<4, "") == 0 { + if name, err := getLeFuncName(GetZosLibVec() + SYS___SETXATTR_A<<4); err == nil { + return name == "__setxattr_a" + } + } + return false +} + +//sys Fstatfs(fd int, buf *Statfs_t) (err error) = SYS_FSTATFS +//sys Fstatvfs(fd int, stat *Statvfs_t) (err error) = SYS_FSTATVFS +//sys Fsync(fd int) (err error) +//sys Futimes(fd int, tv []Timeval) (err error) = SYS_FUTIMES +//sys Futimesat(dirfd int, path string, tv []Timeval) (err error) = SYS___FUTIMESAT_A +//sys Ftruncate(fd int, length int64) (err error) +//sys Getrandom(buf []byte, flags int) (n int, err error) = SYS_GETRANDOM +//sys InotifyInit() (fd int, err error) = SYS_INOTIFY_INIT +//sys InotifyInit1(flags int) (fd int, err error) = SYS_INOTIFY_INIT1 +//sys InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err error) = SYS___INOTIFY_ADD_WATCH_A +//sys InotifyRmWatch(fd int, watchdesc uint32) (success int, err error) = SYS_INOTIFY_RM_WATCH +//sys Listxattr(path string, dest []byte) (sz int, err error) = SYS___LISTXATTR_A +//sys Llistxattr(path string, dest []byte) (sz int, err error) = SYS___LLISTXATTR_A +//sys Lremovexattr(path string, attr string) (err error) = SYS___LREMOVEXATTR_A +//sys Lutimes(path string, tv []Timeval) (err error) = SYS___LUTIMES_A +//sys Mprotect(b []byte, prot int) (err error) = SYS_MPROTECT +//sys Msync(b []byte, flags int) (err error) = SYS_MSYNC +//sys Console2(cmsg *ConsMsg2, modstr *byte, concmd *uint32) (err error) = SYS___CONSOLE2 + +// Pipe2 begin + +//go:nosplit +func getPipe2Addr() *(func([]int, int) error) + +var Pipe2 = pipe2Enter + +func pipe2Enter(p []int, flags int) (err error) { + if funcptrtest(GetZosLibVec()+SYS_PIPE2<<4, "") == 0 { + *getPipe2Addr() = pipe2Impl + } else { + *getPipe2Addr() = pipe2Error + } + return (*getPipe2Addr())(p, flags) +} + +func pipe2Impl(p []int, flags int) (err error) { + var pp [2]_C_int + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_PIPE2<<4, uintptr(unsafe.Pointer(&pp[0])), uintptr(flags)) + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } else { + p[0] = int(pp[0]) + p[1] = int(pp[1]) + } + return +} +func pipe2Error(p []int, flags int) (err error) { + return fmt.Errorf("Pipe2 is not available on this system") +} + +// Pipe2 end + +//sys Poll(fds []PollFd, timeout int) (n int, err error) = SYS_POLL + +func Readdir(dir uintptr) (dirent *Dirent, err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___READDIR_A<<4, uintptr(dir)) + runtime.ExitSyscall() + dirent = (*Dirent)(unsafe.Pointer(r0)) + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//sys Readdir_r(dirp uintptr, entry *direntLE, result **direntLE) (err error) = SYS___READDIR_R_A +//sys Statfs(path string, buf *Statfs_t) (err error) = SYS___STATFS_A +//sys Syncfs(fd int) (err error) = SYS_SYNCFS +//sys Times(tms *Tms) (ticks uintptr, err error) = SYS_TIMES +//sys W_Getmntent(buff *byte, size int) (lastsys int, err error) = SYS_W_GETMNTENT +//sys W_Getmntent_A(buff *byte, size int) (lastsys int, err error) = SYS___W_GETMNTENT_A + +//sys mount_LE(path string, filesystem string, fstype string, mtm uint32, parmlen int32, parm string) (err error) = SYS___MOUNT_A +//sys unmount_LE(filesystem string, mtm int) (err error) = SYS___UMOUNT_A +//sys Chroot(path string) (err error) = SYS___CHROOT_A +//sys Select(nmsgsfds int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (ret int, err error) = SYS_SELECT +//sysnb Uname(buf *Utsname) (err error) = SYS_____OSNAME_A +//sys Unshare(flags int) (err error) = SYS_UNSHARE + +func Ptsname(fd int) (name string, err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___PTSNAME_A<<4, uintptr(fd)) + runtime.ExitSyscall() + if r0 == 0 { + err = errnoErr2(e1, e2) + } else { + name = u2s(unsafe.Pointer(r0)) + } + return +} + +func u2s(cstr unsafe.Pointer) string { + str := (*[1024]uint8)(cstr) + i := 0 + for str[i] != 0 { + i++ + } + return string(str[:i]) +} + +func Close(fd int) (err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSE<<4, uintptr(fd)) + runtime.ExitSyscall() + for i := 0; e1 == EAGAIN && i < 10; i++ { + runtime.EnterSyscall() + CallLeFuncWithErr(GetZosLibVec()+SYS_USLEEP<<4, uintptr(10)) + runtime.ExitSyscall() + runtime.EnterSyscall() + r0, e2, e1 = CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSE<<4, uintptr(fd)) + runtime.ExitSyscall() + } + if r0 != 0 { + err = errnoErr2(e1, e2) + } + return +} + +// Dummy function: there are no semantics for Madvise on z/OS +func Madvise(b []byte, advice int) (err error) { + return +} + +func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { + return mapper.Mmap(fd, offset, length, prot, flags) +} + +func Munmap(b []byte) (err error) { + return mapper.Munmap(b) +} + +func MmapPtr(fd int, offset int64, addr unsafe.Pointer, length uintptr, prot int, flags int) (ret unsafe.Pointer, err error) { + xaddr, err := mapper.mmap(uintptr(addr), length, prot, flags, fd, offset) + return unsafe.Pointer(xaddr), err +} + +func MunmapPtr(addr unsafe.Pointer, length uintptr) (err error) { + return mapper.munmap(uintptr(addr), length) +} + +//sys Gethostname(buf []byte) (err error) = SYS___GETHOSTNAME_A +//sysnb Getgid() (gid int) +//sysnb Getpid() (pid int) +//sysnb Getpgid(pid int) (pgid int, err error) = SYS_GETPGID + +func Getpgrp() (pid int) { + pid, _ = Getpgid(0) + return +} + +//sysnb Getppid() (pid int) +//sys Getpriority(which int, who int) (prio int, err error) +//sysnb Getrlimit(resource int, rlim *Rlimit) (err error) = SYS_GETRLIMIT + +//sysnb getrusage(who int, rusage *rusage_zos) (err error) = SYS_GETRUSAGE + +func Getrusage(who int, rusage *Rusage) (err error) { + var ruz rusage_zos + err = getrusage(who, &ruz) + //Only the first two fields of Rusage are set + rusage.Utime.Sec = ruz.Utime.Sec + rusage.Utime.Usec = int64(ruz.Utime.Usec) + rusage.Stime.Sec = ruz.Stime.Sec + rusage.Stime.Usec = int64(ruz.Stime.Usec) + return +} + +//sys Getegid() (egid int) = SYS_GETEGID +//sys Geteuid() (euid int) = SYS_GETEUID +//sysnb Getsid(pid int) (sid int, err error) = SYS_GETSID +//sysnb Getuid() (uid int) +//sysnb Kill(pid int, sig Signal) (err error) +//sys Lchown(path string, uid int, gid int) (err error) = SYS___LCHOWN_A +//sys Link(path string, link string) (err error) = SYS___LINK_A +//sys Linkat(oldDirFd int, oldPath string, newDirFd int, newPath string, flags int) (err error) = SYS___LINKAT_A +//sys Listen(s int, n int) (err error) +//sys lstat(path string, stat *Stat_LE_t) (err error) = SYS___LSTAT_A + +func Lstat(path string, stat *Stat_t) (err error) { + var statLE Stat_LE_t + err = lstat(path, &statLE) + copyStat(stat, &statLE) + return +} + +// for checking symlinks begins with $VERSION/ $SYSNAME/ $SYSSYMR/ $SYSSYMA/ +func isSpecialPath(path []byte) (v bool) { + var special = [4][8]byte{ + {'V', 'E', 'R', 'S', 'I', 'O', 'N', '/'}, + {'S', 'Y', 'S', 'N', 'A', 'M', 'E', '/'}, + {'S', 'Y', 'S', 'S', 'Y', 'M', 'R', '/'}, + {'S', 'Y', 'S', 'S', 'Y', 'M', 'A', '/'}} + + var i, j int + for i = 0; i < len(special); i++ { + for j = 0; j < len(special[i]); j++ { + if path[j] != special[i][j] { + break + } + } + if j == len(special[i]) { + return true + } + } + return false +} + +func realpath(srcpath string, abspath []byte) (pathlen int, errno int) { + var source [1024]byte + copy(source[:], srcpath) + source[len(srcpath)] = 0 + ret := runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___REALPATH_A<<4, //__realpath_a() + []uintptr{uintptr(unsafe.Pointer(&source[0])), + uintptr(unsafe.Pointer(&abspath[0]))}) + if ret != 0 { + index := bytes.IndexByte(abspath[:], byte(0)) + if index != -1 { + return index, 0 + } + } else { + errptr := (*int)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, []uintptr{}))) //__errno() + return 0, *errptr + } + return 0, 245 // EBADDATA 245 +} + +func Readlink(path string, buf []byte) (n int, err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + var _p1 unsafe.Pointer + if len(buf) > 0 { + _p1 = unsafe.Pointer(&buf[0]) + } else { + _p1 = unsafe.Pointer(&_zero) + } + n = int(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___READLINK_A<<4, + []uintptr{uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf))})) + runtime.KeepAlive(unsafe.Pointer(_p0)) + if n == -1 { + value := *(*int32)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, []uintptr{}))) + err = errnoErr(Errno(value)) + } else { + if buf[0] == '$' { + if isSpecialPath(buf[1:9]) { + cnt, err1 := realpath(path, buf) + if err1 == 0 { + n = cnt + } + } + } + } + return +} + +func impl_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + var _p1 unsafe.Pointer + if len(buf) > 0 { + _p1 = unsafe.Pointer(&buf[0]) + } else { + _p1 = unsafe.Pointer(&_zero) + } + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___READLINKAT_A<<4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf))) + runtime.ExitSyscall() + n = int(r0) + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + return n, err + } else { + if buf[0] == '$' { + if isSpecialPath(buf[1:9]) { + cnt, err1 := realpath(path, buf) + if err1 == 0 { + n = cnt + } + } + } + } + return +} + +//go:nosplit +func get_ReadlinkatAddr() *(func(dirfd int, path string, buf []byte) (n int, err error)) + +var Readlinkat = enter_Readlinkat + +func enter_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) { + funcref := get_ReadlinkatAddr() + if funcptrtest(GetZosLibVec()+SYS___READLINKAT_A<<4, "") == 0 { + *funcref = impl_Readlinkat + } else { + *funcref = error_Readlinkat + } + return (*funcref)(dirfd, path, buf) +} + +func error_Readlinkat(dirfd int, path string, buf []byte) (n int, err error) { + n = -1 + err = ENOSYS + return +} + +//sys Mkdir(path string, mode uint32) (err error) = SYS___MKDIR_A +//sys Mkdirat(dirfd int, path string, mode uint32) (err error) = SYS___MKDIRAT_A +//sys Mkfifo(path string, mode uint32) (err error) = SYS___MKFIFO_A +//sys Mknod(path string, mode uint32, dev int) (err error) = SYS___MKNOD_A +//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) = SYS___MKNODAT_A +//sys PivotRoot(newroot string, oldroot string) (err error) = SYS___PIVOT_ROOT_A +//sys Pread(fd int, p []byte, offset int64) (n int, err error) +//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) +//sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) = SYS___PRCTL_A +//sysnb Prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT +//sys Rename(from string, to string) (err error) = SYS___RENAME_A +//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) = SYS___RENAMEAT_A +//sys Renameat2(olddirfd int, oldpath string, newdirfd int, newpath string, flags uint) (err error) = SYS___RENAMEAT2_A +//sys Rmdir(path string) (err error) = SYS___RMDIR_A +//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK +//sys Setegid(egid int) (err error) = SYS_SETEGID +//sys Seteuid(euid int) (err error) = SYS_SETEUID +//sys Sethostname(p []byte) (err error) = SYS___SETHOSTNAME_A +//sys Setns(fd int, nstype int) (err error) = SYS_SETNS +//sys Setpriority(which int, who int, prio int) (err error) +//sysnb Setpgid(pid int, pgid int) (err error) = SYS_SETPGID +//sysnb Setrlimit(resource int, lim *Rlimit) (err error) +//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID +//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID +//sysnb Setsid() (pid int, err error) = SYS_SETSID +//sys Setuid(uid int) (err error) = SYS_SETUID +//sys Setgid(uid int) (err error) = SYS_SETGID +//sys Shutdown(fd int, how int) (err error) +//sys stat(path string, statLE *Stat_LE_t) (err error) = SYS___STAT_A + +func Stat(path string, sta *Stat_t) (err error) { + var statLE Stat_LE_t + err = stat(path, &statLE) + copyStat(sta, &statLE) + return +} + +//sys Symlink(path string, link string) (err error) = SYS___SYMLINK_A +//sys Symlinkat(oldPath string, dirfd int, newPath string) (err error) = SYS___SYMLINKAT_A +//sys Sync() = SYS_SYNC +//sys Truncate(path string, length int64) (err error) = SYS___TRUNCATE_A +//sys Tcgetattr(fildes int, termptr *Termios) (err error) = SYS_TCGETATTR +//sys Tcsetattr(fildes int, when int, termptr *Termios) (err error) = SYS_TCSETATTR +//sys Umask(mask int) (oldmask int) +//sys Unlink(path string) (err error) = SYS___UNLINK_A +//sys Unlinkat(dirfd int, path string, flags int) (err error) = SYS___UNLINKAT_A +//sys Utime(path string, utim *Utimbuf) (err error) = SYS___UTIME_A + +//sys open(path string, mode int, perm uint32) (fd int, err error) = SYS___OPEN_A + +func Open(path string, mode int, perm uint32) (fd int, err error) { + if mode&O_ACCMODE == 0 { + mode |= O_RDONLY + } + return open(path, mode, perm) +} + +//sys openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) = SYS___OPENAT_A + +func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) { + if flags&O_ACCMODE == 0 { + flags |= O_RDONLY + } + return openat(dirfd, path, flags, mode) +} + +//sys openat2(dirfd int, path string, open_how *OpenHow, size int) (fd int, err error) = SYS___OPENAT2_A + +func Openat2(dirfd int, path string, how *OpenHow) (fd int, err error) { + if how.Flags&O_ACCMODE == 0 { + how.Flags |= O_RDONLY + } + return openat2(dirfd, path, how, SizeofOpenHow) +} + +func ZosFdToPath(dirfd int) (path string, err error) { + var buffer [1024]byte + runtime.EnterSyscall() + ret, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_W_IOCTL<<4, uintptr(dirfd), 17, 1024, uintptr(unsafe.Pointer(&buffer[0]))) + runtime.ExitSyscall() + if ret == 0 { + zb := bytes.IndexByte(buffer[:], 0) + if zb == -1 { + zb = len(buffer) + } + CallLeFuncWithErr(GetZosLibVec()+SYS___E2A_L<<4, uintptr(unsafe.Pointer(&buffer[0])), uintptr(zb)) + return string(buffer[:zb]), nil + } + return "", errnoErr2(e1, e2) +} + +//sys remove(path string) (err error) + +func Remove(path string) error { + return remove(path) +} + +const ImplementsGetwd = true + +func Getcwd(buf []byte) (n int, err error) { + var p unsafe.Pointer + if len(buf) > 0 { + p = unsafe.Pointer(&buf[0]) + } else { + p = unsafe.Pointer(&_zero) + } + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___GETCWD_A<<4, uintptr(p), uintptr(len(buf))) + runtime.ExitSyscall() + n = clen(buf) + 1 + if r0 == 0 { + err = errnoErr2(e1, e2) + } + return +} + +func Getwd() (wd string, err error) { + var buf [PathMax]byte + n, err := Getcwd(buf[0:]) + if err != nil { + return "", err + } + // Getcwd returns the number of bytes written to buf, including the NUL. + if n < 1 || n > len(buf) || buf[n-1] != 0 { + return "", EINVAL + } + return string(buf[0 : n-1]), nil +} + +func Getgroups() (gids []int, err error) { + n, err := getgroups(0, nil) + if err != nil { + return nil, err + } + if n == 0 { + return nil, nil + } + + // Sanity check group count. Max is 1<<16 on Linux. + if n < 0 || n > 1<<20 { + return nil, EINVAL + } + + a := make([]_Gid_t, n) + n, err = getgroups(n, &a[0]) + if err != nil { + return nil, err + } + gids = make([]int, n) + for i, v := range a[0:n] { + gids[i] = int(v) + } + return +} + +func Setgroups(gids []int) (err error) { + if len(gids) == 0 { + return setgroups(0, nil) + } + + a := make([]_Gid_t, len(gids)) + for i, v := range gids { + a[i] = _Gid_t(v) + } + return setgroups(len(a), &a[0]) +} + +func gettid() uint64 + +func Gettid() (tid int) { + return int(gettid()) +} + +type WaitStatus uint32 + +// Wait status is 7 bits at bottom, either 0 (exited), +// 0x7F (stopped), or a signal number that caused an exit. +// The 0x80 bit is whether there was a core dump. +// An extra number (exit code, signal causing a stop) +// is in the high bits. At least that's the idea. +// There are various irregularities. For example, the +// "continued" status is 0xFFFF, distinguishing itself +// from stopped via the core dump bit. + +const ( + mask = 0x7F + core = 0x80 + exited = 0x00 + stopped = 0x7F + shift = 8 +) + +func (w WaitStatus) Exited() bool { return w&mask == exited } + +func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != exited } + +func (w WaitStatus) Stopped() bool { return w&0xFF == stopped } + +func (w WaitStatus) Continued() bool { return w == 0xFFFF } + +func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 } + +func (w WaitStatus) ExitStatus() int { + if !w.Exited() { + return -1 + } + return int(w>>shift) & 0xFF +} + +func (w WaitStatus) Signal() Signal { + if !w.Signaled() { + return -1 + } + return Signal(w & mask) +} + +func (w WaitStatus) StopSignal() Signal { + if !w.Stopped() { + return -1 + } + return Signal(w>>shift) & 0xFF +} + +func (w WaitStatus) TrapCause() int { return -1 } + +//sys waitid(idType int, id int, info *Siginfo, options int) (err error) + +func Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error) { + return waitid(idType, id, info, options) +} + +//sys waitpid(pid int, wstatus *_C_int, options int) (wpid int, err error) + +func impl_Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_WAIT4<<4, uintptr(pid), uintptr(unsafe.Pointer(wstatus)), uintptr(options), uintptr(unsafe.Pointer(rusage))) + runtime.ExitSyscall() + wpid = int(r0) + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//go:nosplit +func get_Wait4Addr() *(func(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error)) + +var Wait4 = enter_Wait4 + +func enter_Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { + funcref := get_Wait4Addr() + if funcptrtest(GetZosLibVec()+SYS_WAIT4<<4, "") == 0 { + *funcref = impl_Wait4 + } else { + *funcref = legacyWait4 + } + return (*funcref)(pid, wstatus, options, rusage) +} + +func legacyWait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { + // TODO(mundaym): z/OS doesn't have wait4. I don't think getrusage does what we want. + // At the moment rusage will not be touched. + var status _C_int + wpid, err = waitpid(pid, &status, options) + if wstatus != nil { + *wstatus = WaitStatus(status) + } + return +} + +//sysnb gettimeofday(tv *timeval_zos) (err error) + +func Gettimeofday(tv *Timeval) (err error) { + var tvz timeval_zos + err = gettimeofday(&tvz) + tv.Sec = tvz.Sec + tv.Usec = int64(tvz.Usec) + return +} + +func Time(t *Time_t) (tt Time_t, err error) { + var tv Timeval + err = Gettimeofday(&tv) + if err != nil { + return 0, err + } + if t != nil { + *t = Time_t(tv.Sec) + } + return Time_t(tv.Sec), nil +} + +func setTimespec(sec, nsec int64) Timespec { + return Timespec{Sec: sec, Nsec: nsec} +} + +func setTimeval(sec, usec int64) Timeval { //fix + return Timeval{Sec: sec, Usec: usec} +} + +//sysnb pipe(p *[2]_C_int) (err error) + +func Pipe(p []int) (err error) { + if len(p) != 2 { + return EINVAL + } + var pp [2]_C_int + err = pipe(&pp) + p[0] = int(pp[0]) + p[1] = int(pp[1]) + return +} + +//sys utimes(path string, timeval *[2]Timeval) (err error) = SYS___UTIMES_A + +func Utimes(path string, tv []Timeval) (err error) { + if tv == nil { + return utimes(path, nil) + } + if len(tv) != 2 { + return EINVAL + } + return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +//sys utimensat(dirfd int, path string, ts *[2]Timespec, flags int) (err error) = SYS___UTIMENSAT_A + +func validUtimensat() bool { + if funcptrtest(GetZosLibVec()+SYS___UTIMENSAT_A<<4, "") == 0 { + if name, err := getLeFuncName(GetZosLibVec() + SYS___UTIMENSAT_A<<4); err == nil { + return name == "__utimensat_a" + } + } + return false +} + +// Begin UtimesNano + +//go:nosplit +func get_UtimesNanoAddr() *(func(path string, ts []Timespec) (err error)) + +var UtimesNano = enter_UtimesNano + +func enter_UtimesNano(path string, ts []Timespec) (err error) { + funcref := get_UtimesNanoAddr() + if validUtimensat() { + *funcref = utimesNanoImpl + } else { + *funcref = legacyUtimesNano + } + return (*funcref)(path, ts) +} + +func utimesNanoImpl(path string, ts []Timespec) (err error) { + if ts == nil { + return utimensat(AT_FDCWD, path, nil, 0) + } + if len(ts) != 2 { + return EINVAL + } + return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) +} + +func legacyUtimesNano(path string, ts []Timespec) (err error) { + if len(ts) != 2 { + return EINVAL + } + // Not as efficient as it could be because Timespec and + // Timeval have different types in the different OSes + tv := [2]Timeval{ + NsecToTimeval(TimespecToNsec(ts[0])), + NsecToTimeval(TimespecToNsec(ts[1])), + } + return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +// End UtimesNano + +// Begin UtimesNanoAt + +//go:nosplit +func get_UtimesNanoAtAddr() *(func(dirfd int, path string, ts []Timespec, flags int) (err error)) + +var UtimesNanoAt = enter_UtimesNanoAt + +func enter_UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) (err error) { + funcref := get_UtimesNanoAtAddr() + if validUtimensat() { + *funcref = utimesNanoAtImpl + } else { + *funcref = legacyUtimesNanoAt + } + return (*funcref)(dirfd, path, ts, flags) +} + +func utimesNanoAtImpl(dirfd int, path string, ts []Timespec, flags int) (err error) { + if ts == nil { + return utimensat(dirfd, path, nil, flags) + } + if len(ts) != 2 { + return EINVAL + } + return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags) +} + +func legacyUtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) (err error) { + if path[0] != '/' { + dirPath, err := ZosFdToPath(dirfd) + if err != nil { + return err + } + path = dirPath + "/" + path + } + if flags == AT_SYMLINK_NOFOLLOW { + if len(ts) != 2 { + return EINVAL + } + + if ts[0].Nsec >= 5e8 { + ts[0].Sec++ + } + ts[0].Nsec = 0 + if ts[1].Nsec >= 5e8 { + ts[1].Sec++ + } + ts[1].Nsec = 0 + + // Not as efficient as it could be because Timespec and + // Timeval have different types in the different OSes + tv := []Timeval{ + NsecToTimeval(TimespecToNsec(ts[0])), + NsecToTimeval(TimespecToNsec(ts[1])), + } + return Lutimes(path, tv) + } + return UtimesNano(path, ts) +} + +// End UtimesNanoAt + +func Getsockname(fd int) (sa Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + if err = getsockname(fd, &rsa, &len); err != nil { + return + } + // TODO(neeilan) : Remove this 0 ( added to get sys/unix compiling on z/OS ) + return anyToSockaddr(0, &rsa) +} + +const ( + // identifier constants + nwmHeaderIdentifier = 0xd5e6d4c8 + nwmFilterIdentifier = 0xd5e6d4c6 + nwmTCPConnIdentifier = 0xd5e6d4c3 + nwmRecHeaderIdentifier = 0xd5e6d4d9 + nwmIPStatsIdentifier = 0xd5e6d4c9d7e2e340 + nwmIPGStatsIdentifier = 0xd5e6d4c9d7c7e2e3 + nwmTCPStatsIdentifier = 0xd5e6d4e3c3d7e2e3 + nwmUDPStatsIdentifier = 0xd5e6d4e4c4d7e2e3 + nwmICMPGStatsEntry = 0xd5e6d4c9c3d4d7c7 + nwmICMPTStatsEntry = 0xd5e6d4c9c3d4d7e3 + + // nwmHeader constants + nwmVersion1 = 1 + nwmVersion2 = 2 + nwmCurrentVer = 2 + + nwmTCPConnType = 1 + nwmGlobalStatsType = 14 + + // nwmFilter constants + nwmFilterLclAddrMask = 0x20000000 // Local address + nwmFilterSrcAddrMask = 0x20000000 // Source address + nwmFilterLclPortMask = 0x10000000 // Local port + nwmFilterSrcPortMask = 0x10000000 // Source port + + // nwmConnEntry constants + nwmTCPStateClosed = 1 + nwmTCPStateListen = 2 + nwmTCPStateSynSent = 3 + nwmTCPStateSynRcvd = 4 + nwmTCPStateEstab = 5 + nwmTCPStateFinWait1 = 6 + nwmTCPStateFinWait2 = 7 + nwmTCPStateClosWait = 8 + nwmTCPStateLastAck = 9 + nwmTCPStateClosing = 10 + nwmTCPStateTimeWait = 11 + nwmTCPStateDeletTCB = 12 + + // Existing constants on linux + BPF_TCP_CLOSE = 1 + BPF_TCP_LISTEN = 2 + BPF_TCP_SYN_SENT = 3 + BPF_TCP_SYN_RECV = 4 + BPF_TCP_ESTABLISHED = 5 + BPF_TCP_FIN_WAIT1 = 6 + BPF_TCP_FIN_WAIT2 = 7 + BPF_TCP_CLOSE_WAIT = 8 + BPF_TCP_LAST_ACK = 9 + BPF_TCP_CLOSING = 10 + BPF_TCP_TIME_WAIT = 11 + BPF_TCP_NEW_SYN_RECV = -1 + BPF_TCP_MAX_STATES = -2 +) + +type nwmTriplet struct { + offset uint32 + length uint32 + number uint32 +} + +type nwmQuadruplet struct { + offset uint32 + length uint32 + number uint32 + match uint32 +} + +type nwmHeader struct { + ident uint32 + length uint32 + version uint16 + nwmType uint16 + bytesNeeded uint32 + options uint32 + _ [16]byte + inputDesc nwmTriplet + outputDesc nwmQuadruplet +} + +type nwmFilter struct { + ident uint32 + flags uint32 + resourceName [8]byte + resourceId uint32 + listenerId uint32 + local [28]byte // union of sockaddr4 and sockaddr6 + remote [28]byte // union of sockaddr4 and sockaddr6 + _ uint16 + _ uint16 + asid uint16 + _ [2]byte + tnLuName [8]byte + tnMonGrp uint32 + tnAppl [8]byte + applData [40]byte + nInterface [16]byte + dVipa [16]byte + dVipaPfx uint16 + dVipaPort uint16 + dVipaFamily byte + _ [3]byte + destXCF [16]byte + destXCFPfx uint16 + destXCFFamily byte + _ [1]byte + targIP [16]byte + targIPPfx uint16 + targIPFamily byte + _ [1]byte + _ [20]byte +} + +type nwmRecHeader struct { + ident uint32 + length uint32 + number byte + _ [3]byte +} + +type nwmTCPStatsEntry struct { + ident uint64 + currEstab uint32 + activeOpened uint32 + passiveOpened uint32 + connClosed uint32 + estabResets uint32 + attemptFails uint32 + passiveDrops uint32 + timeWaitReused uint32 + inSegs uint64 + predictAck uint32 + predictData uint32 + inDupAck uint32 + inBadSum uint32 + inBadLen uint32 + inShort uint32 + inDiscOldTime uint32 + inAllBeforeWin uint32 + inSomeBeforeWin uint32 + inAllAfterWin uint32 + inSomeAfterWin uint32 + inOutOfOrder uint32 + inAfterClose uint32 + inWinProbes uint32 + inWinUpdates uint32 + outWinUpdates uint32 + outSegs uint64 + outDelayAcks uint32 + outRsts uint32 + retransSegs uint32 + retransTimeouts uint32 + retransDrops uint32 + pmtuRetrans uint32 + pmtuErrors uint32 + outWinProbes uint32 + probeDrops uint32 + keepAliveProbes uint32 + keepAliveDrops uint32 + finwait2Drops uint32 + acceptCount uint64 + inBulkQSegs uint64 + inDiscards uint64 + connFloods uint32 + connStalls uint32 + cfgEphemDef uint16 + ephemInUse uint16 + ephemHiWater uint16 + flags byte + _ [1]byte + ephemExhaust uint32 + smcRCurrEstabLnks uint32 + smcRLnkActTimeOut uint32 + smcRActLnkOpened uint32 + smcRPasLnkOpened uint32 + smcRLnksClosed uint32 + smcRCurrEstab uint32 + smcRActiveOpened uint32 + smcRPassiveOpened uint32 + smcRConnClosed uint32 + smcRInSegs uint64 + smcROutSegs uint64 + smcRInRsts uint32 + smcROutRsts uint32 + smcDCurrEstabLnks uint32 + smcDActLnkOpened uint32 + smcDPasLnkOpened uint32 + smcDLnksClosed uint32 + smcDCurrEstab uint32 + smcDActiveOpened uint32 + smcDPassiveOpened uint32 + smcDConnClosed uint32 + smcDInSegs uint64 + smcDOutSegs uint64 + smcDInRsts uint32 + smcDOutRsts uint32 +} + +type nwmConnEntry struct { + ident uint32 + local [28]byte // union of sockaddr4 and sockaddr6 + remote [28]byte // union of sockaddr4 and sockaddr6 + startTime [8]byte // uint64, changed to prevent padding from being inserted + lastActivity [8]byte // uint64 + bytesIn [8]byte // uint64 + bytesOut [8]byte // uint64 + inSegs [8]byte // uint64 + outSegs [8]byte // uint64 + state uint16 + activeOpen byte + flag01 byte + outBuffered uint32 + inBuffered uint32 + maxSndWnd uint32 + reXmtCount uint32 + congestionWnd uint32 + ssThresh uint32 + roundTripTime uint32 + roundTripVar uint32 + sendMSS uint32 + sndWnd uint32 + rcvBufSize uint32 + sndBufSize uint32 + outOfOrderCount uint32 + lcl0WindowCount uint32 + rmt0WindowCount uint32 + dupacks uint32 + flag02 byte + sockOpt6Cont byte + asid uint16 + resourceName [8]byte + resourceId uint32 + subtask uint32 + sockOpt byte + sockOpt6 byte + clusterConnFlag byte + proto byte + targetAppl [8]byte + luName [8]byte + clientUserId [8]byte + logMode [8]byte + timeStamp uint32 + timeStampAge uint32 + serverResourceId uint32 + intfName [16]byte + ttlsStatPol byte + ttlsStatConn byte + ttlsSSLProt uint16 + ttlsNegCiph [2]byte + ttlsSecType byte + ttlsFIPS140Mode byte + ttlsUserID [8]byte + applData [40]byte + inOldestTime [8]byte // uint64 + outOldestTime [8]byte // uint64 + tcpTrustedPartner byte + _ [3]byte + bulkDataIntfName [16]byte + ttlsNegCiph4 [4]byte + smcReason uint32 + lclSMCLinkId uint32 + rmtSMCLinkId uint32 + smcStatus byte + smcFlags byte + _ [2]byte + rcvWnd uint32 + lclSMCBufSz uint32 + rmtSMCBufSz uint32 + ttlsSessID [32]byte + ttlsSessIDLen int16 + _ [1]byte + smcDStatus byte + smcDReason uint32 +} + +var svcNameTable [][]byte = [][]byte{ + []byte("\xc5\xe9\xc2\xd5\xd4\xc9\xc6\xf4"), // svc_EZBNMIF4 +} + +const ( + svc_EZBNMIF4 = 0 +) + +func GetsockoptTCPInfo(fd, level, opt int) (*TCPInfo, error) { + jobname := []byte("\x5c\x40\x40\x40\x40\x40\x40\x40") // "*" + responseBuffer := [4096]byte{0} + var bufferAlet, reasonCode uint32 = 0, 0 + var bufferLen, returnValue, returnCode int32 = 4096, 0, 0 + + dsa := [18]uint64{0} + var argv [7]unsafe.Pointer + argv[0] = unsafe.Pointer(&jobname[0]) + argv[1] = unsafe.Pointer(&responseBuffer[0]) + argv[2] = unsafe.Pointer(&bufferAlet) + argv[3] = unsafe.Pointer(&bufferLen) + argv[4] = unsafe.Pointer(&returnValue) + argv[5] = unsafe.Pointer(&returnCode) + argv[6] = unsafe.Pointer(&reasonCode) + + request := (*struct { + header nwmHeader + filter nwmFilter + })(unsafe.Pointer(&responseBuffer[0])) + + EZBNMIF4 := svcLoad(&svcNameTable[svc_EZBNMIF4][0]) + if EZBNMIF4 == nil { + return nil, errnoErr(EINVAL) + } + + // GetGlobalStats EZBNMIF4 call + request.header.ident = nwmHeaderIdentifier + request.header.length = uint32(unsafe.Sizeof(request.header)) + request.header.version = nwmCurrentVer + request.header.nwmType = nwmGlobalStatsType + request.header.options = 0x80000000 + + svcCall(EZBNMIF4, &argv[0], &dsa[0]) + + // outputDesc field is filled by EZBNMIF4 on success + if returnCode != 0 || request.header.outputDesc.offset == 0 { + return nil, errnoErr(EINVAL) + } + + // Check that EZBNMIF4 returned a nwmRecHeader + recHeader := (*nwmRecHeader)(unsafe.Pointer(&responseBuffer[request.header.outputDesc.offset])) + if recHeader.ident != nwmRecHeaderIdentifier { + return nil, errnoErr(EINVAL) + } + + // Parse nwmTriplets to get offsets of returned entries + var sections []*uint64 + var sectionDesc *nwmTriplet = (*nwmTriplet)(unsafe.Pointer(&responseBuffer[0])) + for i := uint32(0); i < uint32(recHeader.number); i++ { + offset := request.header.outputDesc.offset + uint32(unsafe.Sizeof(*recHeader)) + i*uint32(unsafe.Sizeof(*sectionDesc)) + sectionDesc = (*nwmTriplet)(unsafe.Pointer(&responseBuffer[offset])) + for j := uint32(0); j < sectionDesc.number; j++ { + offset = request.header.outputDesc.offset + sectionDesc.offset + j*sectionDesc.length + sections = append(sections, (*uint64)(unsafe.Pointer(&responseBuffer[offset]))) + } + } + + // Find nwmTCPStatsEntry in returned entries + var tcpStats *nwmTCPStatsEntry = nil + for _, ptr := range sections { + switch *ptr { + case nwmTCPStatsIdentifier: + if tcpStats != nil { + return nil, errnoErr(EINVAL) + } + tcpStats = (*nwmTCPStatsEntry)(unsafe.Pointer(ptr)) + case nwmIPStatsIdentifier: + case nwmIPGStatsIdentifier: + case nwmUDPStatsIdentifier: + case nwmICMPGStatsEntry: + case nwmICMPTStatsEntry: + default: + return nil, errnoErr(EINVAL) + } + } + if tcpStats == nil { + return nil, errnoErr(EINVAL) + } + + // GetConnectionDetail EZBNMIF4 call + responseBuffer = [4096]byte{0} + dsa = [18]uint64{0} + bufferAlet, reasonCode = 0, 0 + bufferLen, returnValue, returnCode = 4096, 0, 0 + nameptr := (*uint32)(unsafe.Pointer(uintptr(0x21c))) // Get jobname of current process + nameptr = (*uint32)(unsafe.Pointer(uintptr(*nameptr + 12))) + argv[0] = unsafe.Pointer(uintptr(*nameptr)) + + request.header.ident = nwmHeaderIdentifier + request.header.length = uint32(unsafe.Sizeof(request.header)) + request.header.version = nwmCurrentVer + request.header.nwmType = nwmTCPConnType + request.header.options = 0x80000000 + + request.filter.ident = nwmFilterIdentifier + + var localSockaddr RawSockaddrAny + socklen := _Socklen(SizeofSockaddrAny) + err := getsockname(fd, &localSockaddr, &socklen) + if err != nil { + return nil, errnoErr(EINVAL) + } + if localSockaddr.Addr.Family == AF_INET { + localSockaddr := (*RawSockaddrInet4)(unsafe.Pointer(&localSockaddr.Addr)) + localSockFilter := (*RawSockaddrInet4)(unsafe.Pointer(&request.filter.local[0])) + localSockFilter.Family = AF_INET + var i int + for i = 0; i < 4; i++ { + if localSockaddr.Addr[i] != 0 { + break + } + } + if i != 4 { + request.filter.flags |= nwmFilterLclAddrMask + for i = 0; i < 4; i++ { + localSockFilter.Addr[i] = localSockaddr.Addr[i] + } + } + if localSockaddr.Port != 0 { + request.filter.flags |= nwmFilterLclPortMask + localSockFilter.Port = localSockaddr.Port + } + } else if localSockaddr.Addr.Family == AF_INET6 { + localSockaddr := (*RawSockaddrInet6)(unsafe.Pointer(&localSockaddr.Addr)) + localSockFilter := (*RawSockaddrInet6)(unsafe.Pointer(&request.filter.local[0])) + localSockFilter.Family = AF_INET6 + var i int + for i = 0; i < 16; i++ { + if localSockaddr.Addr[i] != 0 { + break + } + } + if i != 16 { + request.filter.flags |= nwmFilterLclAddrMask + for i = 0; i < 16; i++ { + localSockFilter.Addr[i] = localSockaddr.Addr[i] + } + } + if localSockaddr.Port != 0 { + request.filter.flags |= nwmFilterLclPortMask + localSockFilter.Port = localSockaddr.Port + } + } + + svcCall(EZBNMIF4, &argv[0], &dsa[0]) + + // outputDesc field is filled by EZBNMIF4 on success + if returnCode != 0 || request.header.outputDesc.offset == 0 { + return nil, errnoErr(EINVAL) + } + + // Check that EZBNMIF4 returned a nwmConnEntry + conn := (*nwmConnEntry)(unsafe.Pointer(&responseBuffer[request.header.outputDesc.offset])) + if conn.ident != nwmTCPConnIdentifier { + return nil, errnoErr(EINVAL) + } + + // Copy data from the returned data structures into tcpInfo + // Stats from nwmConnEntry are specific to that connection. + // Stats from nwmTCPStatsEntry are global (to the interface?) + // Fields may not be an exact match. Some fields have no equivalent. + var tcpinfo TCPInfo + tcpinfo.State = uint8(conn.state) + tcpinfo.Ca_state = 0 // dummy + tcpinfo.Retransmits = uint8(tcpStats.retransSegs) + tcpinfo.Probes = uint8(tcpStats.outWinProbes) + tcpinfo.Backoff = 0 // dummy + tcpinfo.Options = 0 // dummy + tcpinfo.Rto = tcpStats.retransTimeouts + tcpinfo.Ato = tcpStats.outDelayAcks + tcpinfo.Snd_mss = conn.sendMSS + tcpinfo.Rcv_mss = conn.sendMSS // dummy + tcpinfo.Unacked = 0 // dummy + tcpinfo.Sacked = 0 // dummy + tcpinfo.Lost = 0 // dummy + tcpinfo.Retrans = conn.reXmtCount + tcpinfo.Fackets = 0 // dummy + tcpinfo.Last_data_sent = uint32(*(*uint64)(unsafe.Pointer(&conn.lastActivity[0]))) + tcpinfo.Last_ack_sent = uint32(*(*uint64)(unsafe.Pointer(&conn.outOldestTime[0]))) + tcpinfo.Last_data_recv = uint32(*(*uint64)(unsafe.Pointer(&conn.inOldestTime[0]))) + tcpinfo.Last_ack_recv = uint32(*(*uint64)(unsafe.Pointer(&conn.inOldestTime[0]))) + tcpinfo.Pmtu = conn.sendMSS // dummy, NWMIfRouteMtu is a candidate + tcpinfo.Rcv_ssthresh = conn.ssThresh + tcpinfo.Rtt = conn.roundTripTime + tcpinfo.Rttvar = conn.roundTripVar + tcpinfo.Snd_ssthresh = conn.ssThresh // dummy + tcpinfo.Snd_cwnd = conn.congestionWnd + tcpinfo.Advmss = conn.sendMSS // dummy + tcpinfo.Reordering = 0 // dummy + tcpinfo.Rcv_rtt = conn.roundTripTime // dummy + tcpinfo.Rcv_space = conn.sendMSS // dummy + tcpinfo.Total_retrans = conn.reXmtCount + + svcUnload(&svcNameTable[svc_EZBNMIF4][0], EZBNMIF4) + + return &tcpinfo, nil +} + +// GetsockoptString returns the string value of the socket option opt for the +// socket associated with fd at the given socket level. +func GetsockoptString(fd, level, opt int) (string, error) { + buf := make([]byte, 256) + vallen := _Socklen(len(buf)) + err := getsockopt(fd, level, opt, unsafe.Pointer(&buf[0]), &vallen) + if err != nil { + return "", err + } + + return ByteSliceToString(buf[:vallen]), nil +} + +func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { + var msg Msghdr + var rsa RawSockaddrAny + msg.Name = (*byte)(unsafe.Pointer(&rsa)) + msg.Namelen = SizeofSockaddrAny + var iov Iovec + if len(p) > 0 { + iov.Base = (*byte)(unsafe.Pointer(&p[0])) + iov.SetLen(len(p)) + } + var dummy byte + if len(oob) > 0 { + // receive at least one normal byte + if len(p) == 0 { + iov.Base = &dummy + iov.SetLen(1) + } + msg.Control = (*byte)(unsafe.Pointer(&oob[0])) + msg.SetControllen(len(oob)) + } + msg.Iov = &iov + msg.Iovlen = 1 + if n, err = recvmsg(fd, &msg, flags); err != nil { + return + } + oobn = int(msg.Controllen) + recvflags = int(msg.Flags) + // source address is only specified if the socket is unconnected + if rsa.Addr.Family != AF_UNSPEC { + // TODO(neeilan): Remove 0 arg added to get this compiling on z/OS + from, err = anyToSockaddr(0, &rsa) + } + return +} + +func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) { + _, err = SendmsgN(fd, p, oob, to, flags) + return +} + +func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) { + var ptr unsafe.Pointer + var salen _Socklen + if to != nil { + var err error + ptr, salen, err = to.sockaddr() + if err != nil { + return 0, err + } + } + var msg Msghdr + msg.Name = (*byte)(unsafe.Pointer(ptr)) + msg.Namelen = int32(salen) + var iov Iovec + if len(p) > 0 { + iov.Base = (*byte)(unsafe.Pointer(&p[0])) + iov.SetLen(len(p)) + } + var dummy byte + if len(oob) > 0 { + // send at least one normal byte + if len(p) == 0 { + iov.Base = &dummy + iov.SetLen(1) + } + msg.Control = (*byte)(unsafe.Pointer(&oob[0])) + msg.SetControllen(len(oob)) + } + msg.Iov = &iov + msg.Iovlen = 1 + if n, err = sendmsg(fd, &msg, flags); err != nil { + return 0, err + } + if len(oob) > 0 && len(p) == 0 { + n = 0 + } + return n, nil +} + +func Opendir(name string) (uintptr, error) { + p, err := BytePtrFromString(name) + if err != nil { + return 0, err + } + err = nil + runtime.EnterSyscall() + dir, e2, e1 := CallLeFuncWithPtrReturn(GetZosLibVec()+SYS___OPENDIR_A<<4, uintptr(unsafe.Pointer(p))) + runtime.ExitSyscall() + runtime.KeepAlive(unsafe.Pointer(p)) + if dir == 0 { + err = errnoErr2(e1, e2) + } + return dir, err +} + +// clearsyscall.Errno resets the errno value to 0. +func clearErrno() + +func Closedir(dir uintptr) error { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_CLOSEDIR<<4, dir) + runtime.ExitSyscall() + if r0 != 0 { + return errnoErr2(e1, e2) + } + return nil +} + +func Seekdir(dir uintptr, pos int) { + runtime.EnterSyscall() + CallLeFuncWithErr(GetZosLibVec()+SYS_SEEKDIR<<4, dir, uintptr(pos)) + runtime.ExitSyscall() +} + +func Telldir(dir uintptr) (int, error) { + p, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_TELLDIR<<4, dir) + pos := int(p) + if int64(p) == -1 { + return pos, errnoErr2(e1, e2) + } + return pos, nil +} + +// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command. +func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error { + // struct flock is packed on z/OS. We can't emulate that in Go so + // instead we pack it here. + var flock [24]byte + *(*int16)(unsafe.Pointer(&flock[0])) = lk.Type + *(*int16)(unsafe.Pointer(&flock[2])) = lk.Whence + *(*int64)(unsafe.Pointer(&flock[4])) = lk.Start + *(*int64)(unsafe.Pointer(&flock[12])) = lk.Len + *(*int32)(unsafe.Pointer(&flock[20])) = lk.Pid + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FCNTL<<4, fd, uintptr(cmd), uintptr(unsafe.Pointer(&flock))) + runtime.ExitSyscall() + lk.Type = *(*int16)(unsafe.Pointer(&flock[0])) + lk.Whence = *(*int16)(unsafe.Pointer(&flock[2])) + lk.Start = *(*int64)(unsafe.Pointer(&flock[4])) + lk.Len = *(*int64)(unsafe.Pointer(&flock[12])) + lk.Pid = *(*int32)(unsafe.Pointer(&flock[20])) + if r0 == 0 { + return nil + } + return errnoErr2(e1, e2) +} + +func impl_Flock(fd int, how int) (err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FLOCK<<4, uintptr(fd), uintptr(how)) + runtime.ExitSyscall() + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//go:nosplit +func get_FlockAddr() *(func(fd int, how int) (err error)) + +var Flock = enter_Flock + +func validFlock(fp uintptr) bool { + if funcptrtest(GetZosLibVec()+SYS_FLOCK<<4, "") == 0 { + if name, err := getLeFuncName(GetZosLibVec() + SYS_FLOCK<<4); err == nil { + return name == "flock" + } + } + return false +} + +func enter_Flock(fd int, how int) (err error) { + funcref := get_FlockAddr() + if validFlock(GetZosLibVec() + SYS_FLOCK<<4) { + *funcref = impl_Flock + } else { + *funcref = legacyFlock + } + return (*funcref)(fd, how) +} + +func legacyFlock(fd int, how int) error { + + var flock_type int16 + var fcntl_cmd int + + switch how { + case LOCK_SH | LOCK_NB: + flock_type = F_RDLCK + fcntl_cmd = F_SETLK + case LOCK_EX | LOCK_NB: + flock_type = F_WRLCK + fcntl_cmd = F_SETLK + case LOCK_EX: + flock_type = F_WRLCK + fcntl_cmd = F_SETLKW + case LOCK_UN: + flock_type = F_UNLCK + fcntl_cmd = F_SETLKW + default: + } + + flock := Flock_t{ + Type: int16(flock_type), + Whence: int16(0), + Start: int64(0), + Len: int64(0), + Pid: int32(Getppid()), + } + + err := FcntlFlock(uintptr(fd), fcntl_cmd, &flock) + return err +} + +func Mlock(b []byte) (err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP) + runtime.ExitSyscall() + if r0 != 0 { + err = errnoErr2(e1, e2) + } + return +} + +func Mlock2(b []byte, flags int) (err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP) + runtime.ExitSyscall() + if r0 != 0 { + err = errnoErr2(e1, e2) + } + return +} + +func Mlockall(flags int) (err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_NONSWAP) + runtime.ExitSyscall() + if r0 != 0 { + err = errnoErr2(e1, e2) + } + return +} + +func Munlock(b []byte) (err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_SWAP) + runtime.ExitSyscall() + if r0 != 0 { + err = errnoErr2(e1, e2) + } + return +} + +func Munlockall() (err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MLOCKALL<<4, _BPX_SWAP) + runtime.ExitSyscall() + if r0 != 0 { + err = errnoErr2(e1, e2) + } + return +} + +func ClockGettime(clockid int32, ts *Timespec) error { + + var ticks_per_sec uint32 = 100 //TODO(kenan): value is currently hardcoded; need sysconf() call otherwise + var nsec_per_sec int64 = 1000000000 + + if ts == nil { + return EFAULT + } + if clockid == CLOCK_REALTIME || clockid == CLOCK_MONOTONIC { + var nanotime int64 = runtime.Nanotime1() + ts.Sec = nanotime / nsec_per_sec + ts.Nsec = nanotime % nsec_per_sec + } else if clockid == CLOCK_PROCESS_CPUTIME_ID || clockid == CLOCK_THREAD_CPUTIME_ID { + var tm Tms + _, err := Times(&tm) + if err != nil { + return EFAULT + } + ts.Sec = int64(tm.Utime / ticks_per_sec) + ts.Nsec = int64(tm.Utime) * nsec_per_sec / int64(ticks_per_sec) + } else { + return EINVAL + } + return nil +} + +// Chtag + +//go:nosplit +func get_ChtagAddr() *(func(path string, ccsid uint64, textbit uint64) error) + +var Chtag = enter_Chtag + +func enter_Chtag(path string, ccsid uint64, textbit uint64) error { + funcref := get_ChtagAddr() + if validSetxattr() { + *funcref = impl_Chtag + } else { + *funcref = legacy_Chtag + } + return (*funcref)(path, ccsid, textbit) +} + +func legacy_Chtag(path string, ccsid uint64, textbit uint64) error { + tag := ccsid<<16 | textbit<<15 + var tag_buff [8]byte + DecodeData(tag_buff[:], 8, tag) + return Setxattr(path, "filetag", tag_buff[:], XATTR_REPLACE) +} + +func impl_Chtag(path string, ccsid uint64, textbit uint64) error { + tag := ccsid<<16 | textbit<<15 + var tag_buff [4]byte + DecodeData(tag_buff[:], 4, tag) + return Setxattr(path, "system.filetag", tag_buff[:], XATTR_REPLACE) +} + +// End of Chtag + +// Nanosleep + +//go:nosplit +func get_NanosleepAddr() *(func(time *Timespec, leftover *Timespec) error) + +var Nanosleep = enter_Nanosleep + +func enter_Nanosleep(time *Timespec, leftover *Timespec) error { + funcref := get_NanosleepAddr() + if funcptrtest(GetZosLibVec()+SYS_NANOSLEEP<<4, "") == 0 { + *funcref = impl_Nanosleep + } else { + *funcref = legacyNanosleep + } + return (*funcref)(time, leftover) +} + +func impl_Nanosleep(time *Timespec, leftover *Timespec) error { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_NANOSLEEP<<4, uintptr(unsafe.Pointer(time)), uintptr(unsafe.Pointer(leftover))) + runtime.ExitSyscall() + if int64(r0) == -1 { + return errnoErr2(e1, e2) + } + return nil +} + +func legacyNanosleep(time *Timespec, leftover *Timespec) error { + t0 := runtime.Nanotime1() + var secrem uint32 + var nsecrem uint32 + total := time.Sec*1000000000 + time.Nsec + elapsed := runtime.Nanotime1() - t0 + var rv int32 + var rc int32 + var err error + // repeatedly sleep for 1 second until less than 1 second left + for total-elapsed > 1000000000 { + rv, rc, _ = BpxCondTimedWait(uint32(1), uint32(0), uint32(CW_CONDVAR), &secrem, &nsecrem) + if rv != 0 && rc != 112 { // 112 is EAGAIN + if leftover != nil && rc == 120 { // 120 is EINTR + leftover.Sec = int64(secrem) + leftover.Nsec = int64(nsecrem) + } + err = Errno(rc) + return err + } + elapsed = runtime.Nanotime1() - t0 + } + // sleep the remainder + if total > elapsed { + rv, rc, _ = BpxCondTimedWait(uint32(0), uint32(total-elapsed), uint32(CW_CONDVAR), &secrem, &nsecrem) + } + if leftover != nil && rc == 120 { + leftover.Sec = int64(secrem) + leftover.Nsec = int64(nsecrem) + } + if rv != 0 && rc != 112 { + err = Errno(rc) + } + return err +} + +// End of Nanosleep + +var ( + Stdin = 0 + Stdout = 1 + Stderr = 2 +) + +// Do the interface allocations only once for common +// Errno values. +var ( + errEAGAIN error = syscall.EAGAIN + errEINVAL error = syscall.EINVAL + errENOENT error = syscall.ENOENT +) + +var ZosTraceLevel int +var ZosTracefile *os.File + +var ( + signalNameMapOnce sync.Once + signalNameMap map[string]syscall.Signal +) + +// errnoErr returns common boxed Errno values, to prevent +// allocations at runtime. +func errnoErr(e Errno) error { + switch e { + case 0: + return nil + case EAGAIN: + return errEAGAIN + case EINVAL: + return errEINVAL + case ENOENT: + return errENOENT + } + return e +} + +var reg *regexp.Regexp + +// enhanced with zos specific errno2 +func errnoErr2(e Errno, e2 uintptr) error { + switch e { + case 0: + return nil + case EAGAIN: + return errEAGAIN + /* + Allow the retrieval of errno2 for EINVAL and ENOENT on zos + case EINVAL: + return errEINVAL + case ENOENT: + return errENOENT + */ + } + if ZosTraceLevel > 0 { + var name string + if reg == nil { + reg = regexp.MustCompile("(^unix\\.[^/]+$|.*\\/unix\\.[^/]+$)") + } + i := 1 + pc, file, line, ok := runtime.Caller(i) + if ok { + name = runtime.FuncForPC(pc).Name() + } + for ok && reg.MatchString(runtime.FuncForPC(pc).Name()) { + i += 1 + pc, file, line, ok = runtime.Caller(i) + } + if ok { + if ZosTracefile == nil { + ZosConsolePrintf("From %s:%d\n", file, line) + ZosConsolePrintf("%s: %s (errno2=0x%x)\n", name, e.Error(), e2) + } else { + fmt.Fprintf(ZosTracefile, "From %s:%d\n", file, line) + fmt.Fprintf(ZosTracefile, "%s: %s (errno2=0x%x)\n", name, e.Error(), e2) + } + } else { + if ZosTracefile == nil { + ZosConsolePrintf("%s (errno2=0x%x)\n", e.Error(), e2) + } else { + fmt.Fprintf(ZosTracefile, "%s (errno2=0x%x)\n", e.Error(), e2) + } + } + } + return e +} + +// ErrnoName returns the error name for error number e. +func ErrnoName(e Errno) string { + i := sort.Search(len(errorList), func(i int) bool { + return errorList[i].num >= e + }) + if i < len(errorList) && errorList[i].num == e { + return errorList[i].name + } + return "" +} + +// SignalName returns the signal name for signal number s. +func SignalName(s syscall.Signal) string { + i := sort.Search(len(signalList), func(i int) bool { + return signalList[i].num >= s + }) + if i < len(signalList) && signalList[i].num == s { + return signalList[i].name + } + return "" +} + +// SignalNum returns the syscall.Signal for signal named s, +// or 0 if a signal with such name is not found. +// The signal name should start with "SIG". +func SignalNum(s string) syscall.Signal { + signalNameMapOnce.Do(func() { + signalNameMap = make(map[string]syscall.Signal, len(signalList)) + for _, signal := range signalList { + signalNameMap[signal.name] = signal.num + } + }) + return signalNameMap[s] +} + +// clen returns the index of the first NULL byte in n or len(n) if n contains no NULL byte. +func clen(n []byte) int { + i := bytes.IndexByte(n, 0) + if i == -1 { + i = len(n) + } + return i +} + +// Mmap manager, for use by operating system-specific implementations. + +type mmapper struct { + sync.Mutex + active map[*byte][]byte // active mappings; key is last byte in mapping + mmap func(addr, length uintptr, prot, flags, fd int, offset int64) (uintptr, error) + munmap func(addr uintptr, length uintptr) error +} + +func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { + if length <= 0 { + return nil, EINVAL + } + + // Set __MAP_64 by default + flags |= __MAP_64 + + // Map the requested memory. + addr, errno := m.mmap(0, uintptr(length), prot, flags, fd, offset) + if errno != nil { + return nil, errno + } + + // Slice memory layout + var sl = struct { + addr uintptr + len int + cap int + }{addr, length, length} + + // Use unsafe to turn sl into a []byte. + b := *(*[]byte)(unsafe.Pointer(&sl)) + + // Register mapping in m and return it. + p := &b[cap(b)-1] + m.Lock() + defer m.Unlock() + m.active[p] = b + return b, nil +} + +func (m *mmapper) Munmap(data []byte) (err error) { + if len(data) == 0 || len(data) != cap(data) { + return EINVAL + } + + // Find the base of the mapping. + p := &data[cap(data)-1] + m.Lock() + defer m.Unlock() + b := m.active[p] + if b == nil || &b[0] != &data[0] { + return EINVAL + } + + // Unmap the memory and update m. + if errno := m.munmap(uintptr(unsafe.Pointer(&b[0])), uintptr(len(b))); errno != nil { + return errno + } + delete(m.active, p) + return nil +} + +func Read(fd int, p []byte) (n int, err error) { + n, err = read(fd, p) + if raceenabled { + if n > 0 { + raceWriteRange(unsafe.Pointer(&p[0]), n) + } + if err == nil { + raceAcquire(unsafe.Pointer(&ioSync)) + } + } + return +} + +func Write(fd int, p []byte) (n int, err error) { + if raceenabled { + raceReleaseMerge(unsafe.Pointer(&ioSync)) + } + n, err = write(fd, p) + if raceenabled && n > 0 { + raceReadRange(unsafe.Pointer(&p[0]), n) + } + return +} + +// For testing: clients can set this flag to force +// creation of IPv6 sockets to return EAFNOSUPPORT. +var SocketDisableIPv6 bool + +// Sockaddr represents a socket address. +type Sockaddr interface { + sockaddr() (ptr unsafe.Pointer, len _Socklen, err error) // lowercase; only we can define Sockaddrs +} + +// SockaddrInet4 implements the Sockaddr interface for AF_INET type sockets. +type SockaddrInet4 struct { + Port int + Addr [4]byte + raw RawSockaddrInet4 +} + +// SockaddrInet6 implements the Sockaddr interface for AF_INET6 type sockets. +type SockaddrInet6 struct { + Port int + ZoneId uint32 + Addr [16]byte + raw RawSockaddrInet6 +} + +// SockaddrUnix implements the Sockaddr interface for AF_UNIX type sockets. +type SockaddrUnix struct { + Name string + raw RawSockaddrUnix +} + +func Bind(fd int, sa Sockaddr) (err error) { + ptr, n, err := sa.sockaddr() + if err != nil { + return err + } + return bind(fd, ptr, n) +} + +func Connect(fd int, sa Sockaddr) (err error) { + ptr, n, err := sa.sockaddr() + if err != nil { + return err + } + return connect(fd, ptr, n) +} + +func Getpeername(fd int) (sa Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + if err = getpeername(fd, &rsa, &len); err != nil { + return + } + return anyToSockaddr(fd, &rsa) +} + +func GetsockoptByte(fd, level, opt int) (value byte, err error) { + var n byte + vallen := _Socklen(1) + err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) + return n, err +} + +func GetsockoptInt(fd, level, opt int) (value int, err error) { + var n int32 + vallen := _Socklen(4) + err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) + return int(n), err +} + +func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) { + vallen := _Socklen(4) + err = getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen) + return value, err +} + +func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) { + var value IPMreq + vallen := _Socklen(SizeofIPMreq) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) { + var value IPv6Mreq + vallen := _Socklen(SizeofIPv6Mreq) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) { + var value IPv6MTUInfo + vallen := _Socklen(SizeofIPv6MTUInfo) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptICMPv6Filter(fd, level, opt int) (*ICMPv6Filter, error) { + var value ICMPv6Filter + vallen := _Socklen(SizeofICMPv6Filter) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) + return &value, err +} + +func GetsockoptLinger(fd, level, opt int) (*Linger, error) { + var linger Linger + vallen := _Socklen(SizeofLinger) + err := getsockopt(fd, level, opt, unsafe.Pointer(&linger), &vallen) + return &linger, err +} + +func GetsockoptTimeval(fd, level, opt int) (*Timeval, error) { + var tv Timeval + vallen := _Socklen(unsafe.Sizeof(tv)) + err := getsockopt(fd, level, opt, unsafe.Pointer(&tv), &vallen) + return &tv, err +} + +func GetsockoptUint64(fd, level, opt int) (value uint64, err error) { + var n uint64 + vallen := _Socklen(8) + err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) + return n, err +} + +func Recvfrom(fd int, p []byte, flags int) (n int, from Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + if n, err = recvfrom(fd, p, flags, &rsa, &len); err != nil { + return + } + if rsa.Addr.Family != AF_UNSPEC { + from, err = anyToSockaddr(fd, &rsa) + } + return +} + +func Sendto(fd int, p []byte, flags int, to Sockaddr) (err error) { + ptr, n, err := to.sockaddr() + if err != nil { + return err + } + return sendto(fd, p, flags, ptr, n) +} + +func SetsockoptByte(fd, level, opt int, value byte) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(&value), 1) +} + +func SetsockoptInt(fd, level, opt int, value int) (err error) { + var n = int32(value) + return setsockopt(fd, level, opt, unsafe.Pointer(&n), 4) +} + +func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(&value[0]), 4) +} + +func SetsockoptIPMreq(fd, level, opt int, mreq *IPMreq) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPMreq) +} + +func SetsockoptIPv6Mreq(fd, level, opt int, mreq *IPv6Mreq) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPv6Mreq) +} + +func SetsockoptICMPv6Filter(fd, level, opt int, filter *ICMPv6Filter) error { + return setsockopt(fd, level, opt, unsafe.Pointer(filter), SizeofICMPv6Filter) +} + +func SetsockoptLinger(fd, level, opt int, l *Linger) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(l), SizeofLinger) +} + +func SetsockoptString(fd, level, opt int, s string) (err error) { + var p unsafe.Pointer + if len(s) > 0 { + p = unsafe.Pointer(&[]byte(s)[0]) + } + return setsockopt(fd, level, opt, p, uintptr(len(s))) +} + +func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(tv), unsafe.Sizeof(*tv)) +} + +func SetsockoptUint64(fd, level, opt int, value uint64) (err error) { + return setsockopt(fd, level, opt, unsafe.Pointer(&value), 8) +} + +func Socket(domain, typ, proto int) (fd int, err error) { + if domain == AF_INET6 && SocketDisableIPv6 { + return -1, EAFNOSUPPORT + } + fd, err = socket(domain, typ, proto) + return +} + +func Socketpair(domain, typ, proto int) (fd [2]int, err error) { + var fdx [2]int32 + err = socketpair(domain, typ, proto, &fdx) + if err == nil { + fd[0] = int(fdx[0]) + fd[1] = int(fdx[1]) + } + return +} + +var ioSync int64 + +func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) } + +func SetNonblock(fd int, nonblocking bool) (err error) { + flag, err := fcntl(fd, F_GETFL, 0) + if err != nil { + return err + } + if nonblocking { + flag |= O_NONBLOCK + } else { + flag &= ^O_NONBLOCK + } + _, err = fcntl(fd, F_SETFL, flag) + return err +} + +// Exec calls execve(2), which replaces the calling executable in the process +// tree. argv0 should be the full path to an executable ("/bin/ls") and the +// executable name should also be the first argument in argv (["ls", "-l"]). +// envv are the environment variables that should be passed to the new +// process (["USER=go", "PWD=/tmp"]). +func Exec(argv0 string, argv []string, envv []string) error { + return syscall.Exec(argv0, argv, envv) +} + +func Getag(path string) (ccsid uint16, flag uint16, err error) { + var val [8]byte + sz, err := Getxattr(path, "ccsid", val[:]) + if err != nil { + return + } + ccsid = uint16(EncodeData(val[0:sz])) + sz, err = Getxattr(path, "flags", val[:]) + if err != nil { + return + } + flag = uint16(EncodeData(val[0:sz]) >> 15) + return +} + +// Mount begin +func impl_Mount(source string, target string, fstype string, flags uintptr, data string) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(source) + if err != nil { + return + } + var _p1 *byte + _p1, err = BytePtrFromString(target) + if err != nil { + return + } + var _p2 *byte + _p2, err = BytePtrFromString(fstype) + if err != nil { + return + } + var _p3 *byte + _p3, err = BytePtrFromString(data) + if err != nil { + return + } + runtime.EnterSyscall() + 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))) + runtime.ExitSyscall() + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//go:nosplit +func get_MountAddr() *(func(source string, target string, fstype string, flags uintptr, data string) (err error)) + +var Mount = enter_Mount + +func enter_Mount(source string, target string, fstype string, flags uintptr, data string) (err error) { + funcref := get_MountAddr() + if validMount() { + *funcref = impl_Mount + } else { + *funcref = legacyMount + } + return (*funcref)(source, target, fstype, flags, data) +} + +func legacyMount(source string, target string, fstype string, flags uintptr, data string) (err error) { + if needspace := 8 - len(fstype); needspace <= 0 { + fstype = fstype[0:8] + } else { + fstype += " "[0:needspace] + } + return mount_LE(target, source, fstype, uint32(flags), int32(len(data)), data) +} + +func validMount() bool { + if funcptrtest(GetZosLibVec()+SYS___MOUNT1_A<<4, "") == 0 { + if name, err := getLeFuncName(GetZosLibVec() + SYS___MOUNT1_A<<4); err == nil { + return name == "__mount1_a" + } + } + return false +} + +// Mount end + +// Unmount begin +func impl_Unmount(target string, flags int) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(target) + if err != nil { + return + } + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___UMOUNT2_A<<4, uintptr(unsafe.Pointer(_p0)), uintptr(flags)) + runtime.ExitSyscall() + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//go:nosplit +func get_UnmountAddr() *(func(target string, flags int) (err error)) + +var Unmount = enter_Unmount + +func enter_Unmount(target string, flags int) (err error) { + funcref := get_UnmountAddr() + if funcptrtest(GetZosLibVec()+SYS___UMOUNT2_A<<4, "") == 0 { + *funcref = impl_Unmount + } else { + *funcref = legacyUnmount + } + return (*funcref)(target, flags) +} + +func legacyUnmount(name string, mtm int) (err error) { + // mountpoint is always a full path and starts with a '/' + // check if input string is not a mountpoint but a filesystem name + if name[0] != '/' { + return unmount_LE(name, mtm) + } + // treat name as mountpoint + b2s := func(arr []byte) string { + var str string + for i := 0; i < len(arr); i++ { + if arr[i] == 0 { + str = string(arr[:i]) + break + } + } + return str + } + var buffer struct { + header W_Mnth + fsinfo [64]W_Mntent + } + fs_count, err := W_Getmntent_A((*byte)(unsafe.Pointer(&buffer)), int(unsafe.Sizeof(buffer))) + if err == nil { + err = EINVAL + for i := 0; i < fs_count; i++ { + if b2s(buffer.fsinfo[i].Mountpoint[:]) == name { + err = unmount_LE(b2s(buffer.fsinfo[i].Fsname[:]), mtm) + break + } + } + } else if fs_count == 0 { + err = EINVAL + } + return err +} + +// Unmount end + +func direntIno(buf []byte) (uint64, bool) { + return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino)) +} + +func direntReclen(buf []byte) (uint64, bool) { + return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) +} + +func direntNamlen(buf []byte) (uint64, bool) { + reclen, ok := direntReclen(buf) + if !ok { + return 0, false + } + return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true +} + +func direntLeToDirentUnix(dirent *direntLE, dir uintptr, path string) (Dirent, error) { + var d Dirent + + d.Ino = uint64(dirent.Ino) + offset, err := Telldir(dir) + if err != nil { + return d, err + } + + d.Off = int64(offset) + s := string(bytes.Split(dirent.Name[:], []byte{0})[0]) + copy(d.Name[:], s) + + d.Reclen = uint16(24 + len(d.NameString())) + var st Stat_t + path = path + "/" + s + err = Lstat(path, &st) + if err != nil { + return d, err + } + + d.Type = uint8(st.Mode >> 24) + return d, err +} + +func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) { + // Simulation of Getdirentries port from the Darwin implementation. + // COMMENTS FROM DARWIN: + // It's not the full required semantics, but should handle the case + // of calling Getdirentries or ReadDirent repeatedly. + // It won't handle assigning the results of lseek to *basep, or handle + // the directory being edited underfoot. + + skip, err := Seek(fd, 0, 1 /* SEEK_CUR */) + if err != nil { + return 0, err + } + + // Get path from fd to avoid unavailable call (fdopendir) + path, err := ZosFdToPath(fd) + if err != nil { + return 0, err + } + d, err := Opendir(path) + if err != nil { + return 0, err + } + defer Closedir(d) + + var cnt int64 + for { + var entryLE direntLE + var entrypLE *direntLE + e := Readdir_r(d, &entryLE, &entrypLE) + if e != nil { + return n, e + } + if entrypLE == nil { + break + } + if skip > 0 { + skip-- + cnt++ + continue + } + + // Dirent on zos has a different structure + entry, e := direntLeToDirentUnix(&entryLE, d, path) + if e != nil { + return n, e + } + + reclen := int(entry.Reclen) + if reclen > len(buf) { + // Not enough room. Return for now. + // The counter will let us know where we should start up again. + // Note: this strategy for suspending in the middle and + // restarting is O(n^2) in the length of the directory. Oh well. + break + } + + // Copy entry into return buffer. + s := unsafe.Slice((*byte)(unsafe.Pointer(&entry)), reclen) + copy(buf, s) + + buf = buf[reclen:] + n += reclen + cnt++ + } + // Set the seek offset of the input fd to record + // how many files we've already returned. + _, err = Seek(fd, cnt, 0 /* SEEK_SET */) + if err != nil { + return n, err + } + + return n, nil +} + +func Err2ad() (eadd *int) { + r0, _, _ := CallLeFuncWithErr(GetZosLibVec() + SYS___ERR2AD<<4) + eadd = (*int)(unsafe.Pointer(r0)) + return +} + +func ZosConsolePrintf(format string, v ...interface{}) (int, error) { + type __cmsg struct { + _ uint16 + _ [2]uint8 + __msg_length uint32 + __msg uintptr + _ [4]uint8 + } + msg := fmt.Sprintf(format, v...) + strptr := unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&msg)).Data) + len := (*reflect.StringHeader)(unsafe.Pointer(&msg)).Len + cmsg := __cmsg{__msg_length: uint32(len), __msg: uintptr(strptr)} + cmd := uint32(0) + runtime.EnterSyscall() + rc, err2, err1 := CallLeFuncWithErr(GetZosLibVec()+SYS_____CONSOLE_A<<4, uintptr(unsafe.Pointer(&cmsg)), 0, uintptr(unsafe.Pointer(&cmd))) + runtime.ExitSyscall() + if rc != 0 { + return 0, fmt.Errorf("%s (errno2=0x%x)\n", err1.Error(), err2) + } + return 0, nil +} +func ZosStringToEbcdicBytes(str string, nullterm bool) (ebcdicBytes []byte) { + if nullterm { + ebcdicBytes = []byte(str + "\x00") + } else { + ebcdicBytes = []byte(str) + } + A2e(ebcdicBytes) + return +} +func ZosEbcdicBytesToString(b []byte, trimRight bool) (str string) { + res := make([]byte, len(b)) + copy(res, b) + E2a(res) + if trimRight { + str = string(bytes.TrimRight(res, " \x00")) + } else { + str = string(res) + } + return +} + +func fdToPath(dirfd int) (path string, err error) { + var buffer [1024]byte + // w_ctrl() + ret := runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS_W_IOCTL<<4, + []uintptr{uintptr(dirfd), 17, 1024, uintptr(unsafe.Pointer(&buffer[0]))}) + if ret == 0 { + zb := bytes.IndexByte(buffer[:], 0) + if zb == -1 { + zb = len(buffer) + } + // __e2a_l() + runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___E2A_L<<4, + []uintptr{uintptr(unsafe.Pointer(&buffer[0])), uintptr(zb)}) + return string(buffer[:zb]), nil + } + // __errno() + errno := int(*(*int32)(unsafe.Pointer(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO<<4, + []uintptr{})))) + // __errno2() + errno2 := int(runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS___ERRNO2<<4, + []uintptr{})) + // strerror_r() + ret = runtime.CallLeFuncByPtr(runtime.XplinkLibvec+SYS_STRERROR_R<<4, + []uintptr{uintptr(errno), uintptr(unsafe.Pointer(&buffer[0])), 1024}) + if ret == 0 { + zb := bytes.IndexByte(buffer[:], 0) + if zb == -1 { + zb = len(buffer) + } + return "", fmt.Errorf("%s (errno2=0x%x)", buffer[:zb], errno2) + } else { + return "", fmt.Errorf("fdToPath errno %d (errno2=0x%x)", errno, errno2) + } +} + +func impl_Mkfifoat(dirfd int, path string, mode uint32) (err error) { + var _p0 *byte + _p0, err = BytePtrFromString(path) + if err != nil { + return + } + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___MKFIFOAT_A<<4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode)) + runtime.ExitSyscall() + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +//go:nosplit +func get_MkfifoatAddr() *(func(dirfd int, path string, mode uint32) (err error)) + +var Mkfifoat = enter_Mkfifoat + +func enter_Mkfifoat(dirfd int, path string, mode uint32) (err error) { + funcref := get_MkfifoatAddr() + if funcptrtest(GetZosLibVec()+SYS___MKFIFOAT_A<<4, "") == 0 { + *funcref = impl_Mkfifoat + } else { + *funcref = legacy_Mkfifoat + } + return (*funcref)(dirfd, path, mode) +} + +func legacy_Mkfifoat(dirfd int, path string, mode uint32) (err error) { + dirname, err := ZosFdToPath(dirfd) + if err != nil { + return err + } + return Mkfifo(dirname+"/"+path, mode) +} + +//sys Posix_openpt(oflag int) (fd int, err error) = SYS_POSIX_OPENPT +//sys Grantpt(fildes int) (rc int, err error) = SYS_GRANTPT +//sys Unlockpt(fildes int) (rc int, err error) = SYS_UNLOCKPT + +func fcntlAsIs(fd uintptr, cmd int, arg uintptr) (val int, err error) { + runtime.EnterSyscall() + r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS_FCNTL<<4, uintptr(fd), uintptr(cmd), arg) + runtime.ExitSyscall() + val = int(r0) + if int64(r0) == -1 { + err = errnoErr2(e1, e2) + } + return +} + +func Fcntl(fd uintptr, cmd int, op interface{}) (ret int, err error) { + switch op.(type) { + case *Flock_t: + err = FcntlFlock(fd, cmd, op.(*Flock_t)) + if err != nil { + ret = -1 + } + return + case int: + return FcntlInt(fd, cmd, op.(int)) + case *F_cnvrt: + return fcntlAsIs(fd, cmd, uintptr(unsafe.Pointer(op.(*F_cnvrt)))) + case unsafe.Pointer: + return fcntlAsIs(fd, cmd, uintptr(op.(unsafe.Pointer))) + default: + return -1, EINVAL + } + return +} + +func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { + if raceenabled { + raceReleaseMerge(unsafe.Pointer(&ioSync)) + } + return sendfile(outfd, infd, offset, count) +} + +func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { + // TODO: use LE call instead if the call is implemented + originalOffset, err := Seek(infd, 0, SEEK_CUR) + if err != nil { + return -1, err + } + //start reading data from in_fd + if offset != nil { + _, err := Seek(infd, *offset, SEEK_SET) + if err != nil { + return -1, err + } + } + + buf := make([]byte, count) + readBuf := make([]byte, 0) + var n int = 0 + for i := 0; i < count; i += n { + n, err := Read(infd, buf) + if n == 0 { + if err != nil { + return -1, err + } else { // EOF + break + } + } + readBuf = append(readBuf, buf...) + buf = buf[0:0] + } + + n2, err := Write(outfd, readBuf) + if err != nil { + return -1, err + } + + //When sendfile() returns, this variable will be set to the + // offset of the byte following the last byte that was read. + if offset != nil { + *offset = *offset + int64(n) + // If offset is not NULL, then sendfile() does not modify the file + // offset of in_fd + _, err := Seek(infd, originalOffset, SEEK_SET) + if err != nil { + return -1, err + } + } + return n2, nil +} |