Dinesh Belwalkar | e63f7f9 | 2019-11-22 23:11:16 +0000 | [diff] [blame^] | 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 |