1 // Copyright 2009,2010 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 // OpenBSD system calls. 6 // This file is compiled as ordinary Go code, 7 // but it is also input to mksyscall, 8 // which parses the //sys lines and generates system call stubs. 9 // Note that sometimes we use a lowercase //sys name and wrap 10 // it in our own nicer implementation, either here or in 11 // syscall_bsd.go or syscall_unix.go. 12 13 package unix 14 15 import ( 16 "sort" 17 "syscall" 18 "unsafe" 19 ) 20 21 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets. 22 type SockaddrDatalink struct { 23 Len uint8 24 Family uint8 25 Index uint16 26 Type uint8 27 Nlen uint8 28 Alen uint8 29 Slen uint8 30 Data [24]int8 31 raw RawSockaddrDatalink 32 } 33 34 func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) 35 36 func nametomib(name string) (mib []_C_int, err error) { 37 i := sort.Search(len(sysctlMib), func(i int) bool { 38 return sysctlMib[i].ctlname >= name 39 }) 40 if i < len(sysctlMib) && sysctlMib[i].ctlname == name { 41 return sysctlMib[i].ctloid, nil 42 } 43 return nil, EINVAL 44 } 45 46 func SysctlClockinfo(name string) (*Clockinfo, error) { 47 mib, err := sysctlmib(name) 48 if err != nil { 49 return nil, err 50 } 51 52 n := uintptr(SizeofClockinfo) 53 var ci Clockinfo 54 if err := sysctl(mib, (*byte)(unsafe.Pointer(&ci)), &n, nil, 0); err != nil { 55 return nil, err 56 } 57 if n != SizeofClockinfo { 58 return nil, EIO 59 } 60 return &ci, nil 61 } 62 63 func SysctlUvmexp(name string) (*Uvmexp, error) { 64 mib, err := sysctlmib(name) 65 if err != nil { 66 return nil, err 67 } 68 69 n := uintptr(SizeofUvmexp) 70 var u Uvmexp 71 if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil { 72 return nil, err 73 } 74 if n != SizeofUvmexp { 75 return nil, EIO 76 } 77 return &u, nil 78 } 79 80 //sysnb pipe(p *[2]_C_int) (err error) 81 func Pipe(p []int) (err error) { 82 if len(p) != 2 { 83 return EINVAL 84 } 85 var pp [2]_C_int 86 err = pipe(&pp) 87 p[0] = int(pp[0]) 88 p[1] = int(pp[1]) 89 return 90 } 91 92 //sys getdents(fd int, buf []byte) (n int, err error) 93 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) { 94 return getdents(fd, buf) 95 } 96 97 const ImplementsGetwd = true 98 99 //sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD 100 101 func Getwd() (string, error) { 102 var buf [PathMax]byte 103 _, err := Getcwd(buf[0:]) 104 if err != nil { 105 return "", err 106 } 107 n := clen(buf[:]) 108 if n < 1 { 109 return "", EINVAL 110 } 111 return string(buf[:n]), nil 112 } 113 114 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 115 if raceenabled { 116 raceReleaseMerge(unsafe.Pointer(&ioSync)) 117 } 118 return sendfile(outfd, infd, offset, count) 119 } 120 121 // TODO 122 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 123 return -1, ENOSYS 124 } 125 126 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 127 var _p0 unsafe.Pointer 128 var bufsize uintptr 129 if len(buf) > 0 { 130 _p0 = unsafe.Pointer(&buf[0]) 131 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 132 } 133 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 134 n = int(r0) 135 if e1 != 0 { 136 err = e1 137 } 138 return 139 } 140 141 func setattrlistTimes(path string, times []Timespec, flags int) error { 142 // used on Darwin for UtimesNano 143 return ENOSYS 144 } 145 146 //sys ioctl(fd int, req uint, arg uintptr) (err error) 147 148 // ioctl itself should not be exposed directly, but additional get/set 149 // functions for specific types are permissible. 150 151 // IoctlSetInt performs an ioctl operation which sets an integer value 152 // on fd, using the specified request number. 153 func IoctlSetInt(fd int, req uint, value int) error { 154 return ioctl(fd, req, uintptr(value)) 155 } 156 157 func ioctlSetWinsize(fd int, req uint, value *Winsize) error { 158 return ioctl(fd, req, uintptr(unsafe.Pointer(value))) 159 } 160 161 func ioctlSetTermios(fd int, req uint, value *Termios) error { 162 return ioctl(fd, req, uintptr(unsafe.Pointer(value))) 163 } 164 165 // IoctlGetInt performs an ioctl operation which gets an integer value 166 // from fd, using the specified request number. 167 func IoctlGetInt(fd int, req uint) (int, error) { 168 var value int 169 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 170 return value, err 171 } 172 173 func IoctlGetWinsize(fd int, req uint) (*Winsize, error) { 174 var value Winsize 175 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 176 return &value, err 177 } 178 179 func IoctlGetTermios(fd int, req uint) (*Termios, error) { 180 var value Termios 181 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 182 return &value, err 183 } 184 185 //sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) 186 187 func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) { 188 if len(fds) == 0 { 189 return ppoll(nil, 0, timeout, sigmask) 190 } 191 return ppoll(&fds[0], len(fds), timeout, sigmask) 192 } 193 194 func Uname(uname *Utsname) error { 195 mib := []_C_int{CTL_KERN, KERN_OSTYPE} 196 n := unsafe.Sizeof(uname.Sysname) 197 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil { 198 return err 199 } 200 201 mib = []_C_int{CTL_KERN, KERN_HOSTNAME} 202 n = unsafe.Sizeof(uname.Nodename) 203 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil { 204 return err 205 } 206 207 mib = []_C_int{CTL_KERN, KERN_OSRELEASE} 208 n = unsafe.Sizeof(uname.Release) 209 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil { 210 return err 211 } 212 213 mib = []_C_int{CTL_KERN, KERN_VERSION} 214 n = unsafe.Sizeof(uname.Version) 215 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil { 216 return err 217 } 218 219 // The version might have newlines or tabs in it, convert them to 220 // spaces. 221 for i, b := range uname.Version { 222 if b == '\n' || b == '\t' { 223 if i == len(uname.Version)-1 { 224 uname.Version[i] = 0 225 } else { 226 uname.Version[i] = ' ' 227 } 228 } 229 } 230 231 mib = []_C_int{CTL_HW, HW_MACHINE} 232 n = unsafe.Sizeof(uname.Machine) 233 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil { 234 return err 235 } 236 237 return nil 238 } 239 240 /* 241 * Exposed directly 242 */ 243 //sys Access(path string, mode uint32) (err error) 244 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 245 //sys Chdir(path string) (err error) 246 //sys Chflags(path string, flags int) (err error) 247 //sys Chmod(path string, mode uint32) (err error) 248 //sys Chown(path string, uid int, gid int) (err error) 249 //sys Chroot(path string) (err error) 250 //sys Close(fd int) (err error) 251 //sys Dup(fd int) (nfd int, err error) 252 //sys Dup2(from int, to int) (err error) 253 //sys Exit(code int) 254 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) 255 //sys Fchdir(fd int) (err error) 256 //sys Fchflags(fd int, flags int) (err error) 257 //sys Fchmod(fd int, mode uint32) (err error) 258 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) 259 //sys Fchown(fd int, uid int, gid int) (err error) 260 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) 261 //sys Flock(fd int, how int) (err error) 262 //sys Fpathconf(fd int, name int) (val int, err error) 263 //sys Fstat(fd int, stat *Stat_t) (err error) 264 //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 265 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 266 //sys Fsync(fd int) (err error) 267 //sys Ftruncate(fd int, length int64) (err error) 268 //sysnb Getegid() (egid int) 269 //sysnb Geteuid() (uid int) 270 //sysnb Getgid() (gid int) 271 //sysnb Getpgid(pid int) (pgid int, err error) 272 //sysnb Getpgrp() (pgrp int) 273 //sysnb Getpid() (pid int) 274 //sysnb Getppid() (ppid int) 275 //sys Getpriority(which int, who int) (prio int, err error) 276 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 277 //sysnb Getrtable() (rtable int, err error) 278 //sysnb Getrusage(who int, rusage *Rusage) (err error) 279 //sysnb Getsid(pid int) (sid int, err error) 280 //sysnb Gettimeofday(tv *Timeval) (err error) 281 //sysnb Getuid() (uid int) 282 //sys Issetugid() (tainted bool) 283 //sys Kill(pid int, signum syscall.Signal) (err error) 284 //sys Kqueue() (fd int, err error) 285 //sys Lchown(path string, uid int, gid int) (err error) 286 //sys Link(path string, link string) (err error) 287 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error) 288 //sys Listen(s int, backlog int) (err error) 289 //sys Lstat(path string, stat *Stat_t) (err error) 290 //sys Mkdir(path string, mode uint32) (err error) 291 //sys Mkdirat(dirfd int, path string, mode uint32) (err error) 292 //sys Mkfifo(path string, mode uint32) (err error) 293 //sys Mkfifoat(dirfd int, path string, mode uint32) (err error) 294 //sys Mknod(path string, mode uint32, dev int) (err error) 295 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) 296 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 297 //sys Open(path string, mode int, perm uint32) (fd int, err error) 298 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error) 299 //sys Pathconf(path string, name int) (val int, err error) 300 //sys Pread(fd int, p []byte, offset int64) (n int, err error) 301 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) 302 //sys read(fd int, p []byte) (n int, err error) 303 //sys Readlink(path string, buf []byte) (n int, err error) 304 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error) 305 //sys Rename(from string, to string) (err error) 306 //sys Renameat(fromfd int, from string, tofd int, to string) (err error) 307 //sys Revoke(path string) (err error) 308 //sys Rmdir(path string) (err error) 309 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 310 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 311 //sysnb Setegid(egid int) (err error) 312 //sysnb Seteuid(euid int) (err error) 313 //sysnb Setgid(gid int) (err error) 314 //sys Setlogin(name string) (err error) 315 //sysnb Setpgid(pid int, pgid int) (err error) 316 //sys Setpriority(which int, who int, prio int) (err error) 317 //sysnb Setregid(rgid int, egid int) (err error) 318 //sysnb Setreuid(ruid int, euid int) (err error) 319 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) 320 //sysnb Setresuid(ruid int, euid int, suid int) (err error) 321 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 322 //sysnb Setrtable(rtable int) (err error) 323 //sysnb Setsid() (pid int, err error) 324 //sysnb Settimeofday(tp *Timeval) (err error) 325 //sysnb Setuid(uid int) (err error) 326 //sys Stat(path string, stat *Stat_t) (err error) 327 //sys Statfs(path string, stat *Statfs_t) (err error) 328 //sys Symlink(path string, link string) (err error) 329 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error) 330 //sys Sync() (err error) 331 //sys Truncate(path string, length int64) (err error) 332 //sys Umask(newmask int) (oldmask int) 333 //sys Unlink(path string) (err error) 334 //sys Unlinkat(dirfd int, path string, flags int) (err error) 335 //sys Unmount(path string, flags int) (err error) 336 //sys write(fd int, p []byte) (n int, err error) 337 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 338 //sys munmap(addr uintptr, length uintptr) (err error) 339 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 340 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 341 //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error) 342 343 /* 344 * Unimplemented 345 */ 346 // __getcwd 347 // __semctl 348 // __syscall 349 // __sysctl 350 // adjfreq 351 // break 352 // clock_getres 353 // clock_gettime 354 // clock_settime 355 // closefrom 356 // execve 357 // fcntl 358 // fhopen 359 // fhstat 360 // fhstatfs 361 // fork 362 // futimens 363 // getfh 364 // getgid 365 // getitimer 366 // getlogin 367 // getresgid 368 // getresuid 369 // getthrid 370 // ktrace 371 // lfs_bmapv 372 // lfs_markv 373 // lfs_segclean 374 // lfs_segwait 375 // mincore 376 // minherit 377 // mount 378 // mquery 379 // msgctl 380 // msgget 381 // msgrcv 382 // msgsnd 383 // nfssvc 384 // nnpfspioctl 385 // preadv 386 // profil 387 // pwritev 388 // quotactl 389 // readv 390 // reboot 391 // renameat 392 // rfork 393 // sched_yield 394 // semget 395 // semop 396 // setgroups 397 // setitimer 398 // setsockopt 399 // shmat 400 // shmctl 401 // shmdt 402 // shmget 403 // sigaction 404 // sigaltstack 405 // sigpending 406 // sigprocmask 407 // sigreturn 408 // sigsuspend 409 // sysarch 410 // syscall 411 // threxit 412 // thrsigdivert 413 // thrsleep 414 // thrwakeup 415 // vfork 416 // writev 417