github.com/etecs-ru/go-sys-wineventlog@v0.0.0-20210227233244-4c3abb794018/unix/syscall_linux_s390x.go (about) 1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build s390x && linux 6 // +build s390x,linux 7 8 package unix 9 10 import ( 11 "unsafe" 12 ) 13 14 //sys dup2(oldfd int, newfd int) (err error) 15 //sysnb EpollCreate(size int) (fd int, err error) 16 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 17 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64 18 //sys Fchown(fd int, uid int, gid int) (err error) 19 //sys Fstat(fd int, stat *Stat_t) (err error) 20 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT 21 //sys Fstatfs(fd int, buf *Statfs_t) (err error) 22 //sys Ftruncate(fd int, length int64) (err error) 23 //sysnb Getegid() (egid int) 24 //sysnb Geteuid() (euid int) 25 //sysnb Getgid() (gid int) 26 //sysnb Getrlimit(resource int, rlim *Rlimit) (err error) 27 //sysnb Getuid() (uid int) 28 //sysnb InotifyInit() (fd int, err error) 29 //sys Lchown(path string, uid int, gid int) (err error) 30 //sys Lstat(path string, stat *Stat_t) (err error) 31 //sys Pause() (err error) 32 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 33 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 34 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 35 //sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK 36 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) 37 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) 38 //sys setfsgid(gid int) (prev int, err error) 39 //sys setfsuid(uid int) (prev int, err error) 40 //sysnb Setregid(rgid int, egid int) (err error) 41 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) 42 //sysnb Setresuid(ruid int, euid int, suid int) (err error) 43 //sysnb Setrlimit(resource int, rlim *Rlimit) (err error) 44 //sysnb Setreuid(ruid int, euid int) (err error) 45 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) 46 //sys Stat(path string, stat *Stat_t) (err error) 47 //sys Statfs(path string, buf *Statfs_t) (err error) 48 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) 49 //sys Truncate(path string, length int64) (err error) 50 //sys Ustat(dev int, ubuf *Ustat_t) (err error) 51 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 52 //sysnb setgroups(n int, list *_Gid_t) (err error) 53 54 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) 55 //sysnb Gettimeofday(tv *Timeval) (err error) 56 57 func Time(t *Time_t) (tt Time_t, err error) { 58 var tv Timeval 59 err = Gettimeofday(&tv) 60 if err != nil { 61 return 0, err 62 } 63 if t != nil { 64 *t = Time_t(tv.Sec) 65 } 66 return Time_t(tv.Sec), nil 67 } 68 69 //sys Utime(path string, buf *Utimbuf) (err error) 70 //sys utimes(path string, times *[2]Timeval) (err error) 71 72 func setTimespec(sec, nsec int64) Timespec { 73 return Timespec{Sec: sec, Nsec: nsec} 74 } 75 76 func setTimeval(sec, usec int64) Timeval { 77 return Timeval{Sec: sec, Usec: usec} 78 } 79 80 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 81 82 func Pipe(p []int) (err error) { 83 if len(p) != 2 { 84 return EINVAL 85 } 86 var pp [2]_C_int 87 err = pipe2(&pp, 0) // pipe2 is the same as pipe when flags are set to 0. 88 p[0] = int(pp[0]) 89 p[1] = int(pp[1]) 90 return 91 } 92 93 func Pipe2(p []int, flags int) (err error) { 94 if len(p) != 2 { 95 return EINVAL 96 } 97 var pp [2]_C_int 98 err = pipe2(&pp, flags) 99 p[0] = int(pp[0]) 100 p[1] = int(pp[1]) 101 return 102 } 103 104 func Ioperm(from int, num int, on int) (err error) { 105 return ENOSYS 106 } 107 108 func Iopl(level int) (err error) { 109 return ENOSYS 110 } 111 112 func (r *PtraceRegs) PC() uint64 { return r.Psw.Addr } 113 114 func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.Addr = pc } 115 116 func (iov *Iovec) SetLen(length int) { 117 iov.Len = uint64(length) 118 } 119 120 func (msghdr *Msghdr) SetControllen(length int) { 121 msghdr.Controllen = uint64(length) 122 } 123 124 func (msghdr *Msghdr) SetIovlen(length int) { 125 msghdr.Iovlen = uint64(length) 126 } 127 128 func (cmsg *Cmsghdr) SetLen(length int) { 129 cmsg.Len = uint64(length) 130 } 131 132 // Linux on s390x uses the old mmap interface, which requires arguments to be passed in a struct. 133 // mmap2 also requires arguments to be passed in a struct; it is currently not exposed in <asm/unistd.h>. 134 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 135 mmap_args := [6]uintptr{addr, length, uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset)} 136 r0, _, e1 := Syscall(SYS_MMAP, uintptr(unsafe.Pointer(&mmap_args[0])), 0, 0) 137 xaddr = uintptr(r0) 138 if e1 != 0 { 139 err = errnoErr(e1) 140 } 141 return 142 } 143 144 // On s390x Linux, all the socket calls go through an extra indirection. 145 // The arguments to the underlying system call (SYS_SOCKETCALL) are the 146 // number below and a pointer to an array of uintptr. 147 const ( 148 // see linux/net.h 149 netSocket = 1 150 netBind = 2 151 netConnect = 3 152 netListen = 4 153 netAccept = 5 154 netGetSockName = 6 155 netGetPeerName = 7 156 netSocketPair = 8 157 netSend = 9 158 netRecv = 10 159 netSendTo = 11 160 netRecvFrom = 12 161 netShutdown = 13 162 netSetSockOpt = 14 163 netGetSockOpt = 15 164 netSendMsg = 16 165 netRecvMsg = 17 166 netAccept4 = 18 167 netRecvMMsg = 19 168 netSendMMsg = 20 169 ) 170 171 func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (int, error) { 172 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 173 fd, _, err := Syscall(SYS_SOCKETCALL, netAccept, uintptr(unsafe.Pointer(&args)), 0) 174 if err != 0 { 175 return 0, err 176 } 177 return int(fd), nil 178 } 179 180 func accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (int, error) { 181 args := [4]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)), uintptr(flags)} 182 fd, _, err := Syscall(SYS_SOCKETCALL, netAccept4, uintptr(unsafe.Pointer(&args)), 0) 183 if err != 0 { 184 return 0, err 185 } 186 return int(fd), nil 187 } 188 189 func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { 190 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 191 _, _, err := RawSyscall(SYS_SOCKETCALL, netGetSockName, uintptr(unsafe.Pointer(&args)), 0) 192 if err != 0 { 193 return err 194 } 195 return nil 196 } 197 198 func getpeername(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error { 199 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))} 200 _, _, err := RawSyscall(SYS_SOCKETCALL, netGetPeerName, uintptr(unsafe.Pointer(&args)), 0) 201 if err != 0 { 202 return err 203 } 204 return nil 205 } 206 207 func socketpair(domain int, typ int, flags int, fd *[2]int32) error { 208 args := [4]uintptr{uintptr(domain), uintptr(typ), uintptr(flags), uintptr(unsafe.Pointer(fd))} 209 _, _, err := RawSyscall(SYS_SOCKETCALL, netSocketPair, uintptr(unsafe.Pointer(&args)), 0) 210 if err != 0 { 211 return err 212 } 213 return nil 214 } 215 216 func bind(s int, addr unsafe.Pointer, addrlen _Socklen) error { 217 args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} 218 _, _, err := Syscall(SYS_SOCKETCALL, netBind, uintptr(unsafe.Pointer(&args)), 0) 219 if err != 0 { 220 return err 221 } 222 return nil 223 } 224 225 func connect(s int, addr unsafe.Pointer, addrlen _Socklen) error { 226 args := [3]uintptr{uintptr(s), uintptr(addr), uintptr(addrlen)} 227 _, _, err := Syscall(SYS_SOCKETCALL, netConnect, uintptr(unsafe.Pointer(&args)), 0) 228 if err != 0 { 229 return err 230 } 231 return nil 232 } 233 234 func socket(domain int, typ int, proto int) (int, error) { 235 args := [3]uintptr{uintptr(domain), uintptr(typ), uintptr(proto)} 236 fd, _, err := RawSyscall(SYS_SOCKETCALL, netSocket, uintptr(unsafe.Pointer(&args)), 0) 237 if err != 0 { 238 return 0, err 239 } 240 return int(fd), nil 241 } 242 243 func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) error { 244 args := [5]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen))} 245 _, _, err := Syscall(SYS_SOCKETCALL, netGetSockOpt, uintptr(unsafe.Pointer(&args)), 0) 246 if err != 0 { 247 return err 248 } 249 return nil 250 } 251 252 func setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) error { 253 args := [4]uintptr{uintptr(s), uintptr(level), uintptr(name), uintptr(val)} 254 _, _, err := Syscall(SYS_SOCKETCALL, netSetSockOpt, uintptr(unsafe.Pointer(&args)), 0) 255 if err != 0 { 256 return err 257 } 258 return nil 259 } 260 261 func recvfrom(s int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (int, error) { 262 var base uintptr 263 if len(p) > 0 { 264 base = uintptr(unsafe.Pointer(&p[0])) 265 } 266 args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(fromlen))} 267 n, _, err := Syscall(SYS_SOCKETCALL, netRecvFrom, uintptr(unsafe.Pointer(&args)), 0) 268 if err != 0 { 269 return 0, err 270 } 271 return int(n), nil 272 } 273 274 func sendto(s int, p []byte, flags int, to unsafe.Pointer, addrlen _Socklen) error { 275 var base uintptr 276 if len(p) > 0 { 277 base = uintptr(unsafe.Pointer(&p[0])) 278 } 279 args := [6]uintptr{uintptr(s), base, uintptr(len(p)), uintptr(flags), uintptr(to), uintptr(addrlen)} 280 _, _, err := Syscall(SYS_SOCKETCALL, netSendTo, uintptr(unsafe.Pointer(&args)), 0) 281 if err != 0 { 282 return err 283 } 284 return nil 285 } 286 287 func recvmsg(s int, msg *Msghdr, flags int) (int, error) { 288 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} 289 n, _, err := Syscall(SYS_SOCKETCALL, netRecvMsg, uintptr(unsafe.Pointer(&args)), 0) 290 if err != 0 { 291 return 0, err 292 } 293 return int(n), nil 294 } 295 296 func sendmsg(s int, msg *Msghdr, flags int) (int, error) { 297 args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(msg)), uintptr(flags)} 298 n, _, err := Syscall(SYS_SOCKETCALL, netSendMsg, uintptr(unsafe.Pointer(&args)), 0) 299 if err != 0 { 300 return 0, err 301 } 302 return int(n), nil 303 } 304 305 func Listen(s int, n int) error { 306 args := [2]uintptr{uintptr(s), uintptr(n)} 307 _, _, err := Syscall(SYS_SOCKETCALL, netListen, uintptr(unsafe.Pointer(&args)), 0) 308 if err != 0 { 309 return err 310 } 311 return nil 312 } 313 314 func Shutdown(s, how int) error { 315 args := [2]uintptr{uintptr(s), uintptr(how)} 316 _, _, err := Syscall(SYS_SOCKETCALL, netShutdown, uintptr(unsafe.Pointer(&args)), 0) 317 if err != 0 { 318 return err 319 } 320 return nil 321 } 322 323 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 324 325 func Poll(fds []PollFd, timeout int) (n int, err error) { 326 if len(fds) == 0 { 327 return poll(nil, 0, timeout) 328 } 329 return poll(&fds[0], len(fds), timeout) 330 } 331 332 //sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) 333 334 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { 335 cmdlineLen := len(cmdline) 336 if cmdlineLen > 0 { 337 // Account for the additional NULL byte added by 338 // BytePtrFromString in kexecFileLoad. The kexec_file_load 339 // syscall expects a NULL-terminated string. 340 cmdlineLen++ 341 } 342 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) 343 }