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 13package unix 14 15import ( 16 "sort" 17 "syscall" 18 "unsafe" 19) 20 21// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets. 22type 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 34func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) 35 36func 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 46func direntIno(buf []byte) (uint64, bool) { 47 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) 48} 49 50func direntReclen(buf []byte) (uint64, bool) { 51 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) 52} 53 54func direntNamlen(buf []byte) (uint64, bool) { 55 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) 56} 57 58func SysctlUvmexp(name string) (*Uvmexp, error) { 59 mib, err := sysctlmib(name) 60 if err != nil { 61 return nil, err 62 } 63 64 n := uintptr(SizeofUvmexp) 65 var u Uvmexp 66 if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil { 67 return nil, err 68 } 69 if n != SizeofUvmexp { 70 return nil, EIO 71 } 72 return &u, nil 73} 74 75func Pipe(p []int) (err error) { 76 return Pipe2(p, 0) 77} 78 79//sysnb pipe2(p *[2]_C_int, flags int) (err error) 80func Pipe2(p []int, flags int) error { 81 if len(p) != 2 { 82 return EINVAL 83 } 84 var pp [2]_C_int 85 err := pipe2(&pp, flags) 86 p[0] = int(pp[0]) 87 p[1] = int(pp[1]) 88 return err 89} 90 91//sys Getdents(fd int, buf []byte) (n int, err error) 92func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) { 93 n, err = Getdents(fd, buf) 94 if err != nil || basep == nil { 95 return 96 } 97 98 var off int64 99 off, err = Seek(fd, 0, 1 /* SEEK_CUR */) 100 if err != nil { 101 *basep = ^uintptr(0) 102 return 103 } 104 *basep = uintptr(off) 105 if unsafe.Sizeof(*basep) == 8 { 106 return 107 } 108 if off>>32 != 0 { 109 // We can't stuff the offset back into a uintptr, so any 110 // future calls would be suspect. Generate an error. 111 // EIO was allowed by getdirentries. 112 err = EIO 113 } 114 return 115} 116 117const ImplementsGetwd = true 118 119//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD 120 121func Getwd() (string, error) { 122 var buf [PathMax]byte 123 _, err := Getcwd(buf[0:]) 124 if err != nil { 125 return "", err 126 } 127 n := clen(buf[:]) 128 if n < 1 { 129 return "", EINVAL 130 } 131 return string(buf[:n]), nil 132} 133 134func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 135 if raceenabled { 136 raceReleaseMerge(unsafe.Pointer(&ioSync)) 137 } 138 return sendfile(outfd, infd, offset, count) 139} 140 141// TODO 142func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 143 return -1, ENOSYS 144} 145 146func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 147 var _p0 unsafe.Pointer 148 var bufsize uintptr 149 if len(buf) > 0 { 150 _p0 = unsafe.Pointer(&buf[0]) 151 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 152 } 153 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 154 n = int(r0) 155 if e1 != 0 { 156 err = e1 157 } 158 return 159} 160 161func setattrlistTimes(path string, times []Timespec, flags int) error { 162 // used on Darwin for UtimesNano 163 return ENOSYS 164} 165 166//sys ioctl(fd int, req uint, arg uintptr) (err error) 167 168//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL 169 170//sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) 171 172func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) { 173 if len(fds) == 0 { 174 return ppoll(nil, 0, timeout, sigmask) 175 } 176 return ppoll(&fds[0], len(fds), timeout, sigmask) 177} 178 179func Uname(uname *Utsname) error { 180 mib := []_C_int{CTL_KERN, KERN_OSTYPE} 181 n := unsafe.Sizeof(uname.Sysname) 182 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil { 183 return err 184 } 185 186 mib = []_C_int{CTL_KERN, KERN_HOSTNAME} 187 n = unsafe.Sizeof(uname.Nodename) 188 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil { 189 return err 190 } 191 192 mib = []_C_int{CTL_KERN, KERN_OSRELEASE} 193 n = unsafe.Sizeof(uname.Release) 194 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil { 195 return err 196 } 197 198 mib = []_C_int{CTL_KERN, KERN_VERSION} 199 n = unsafe.Sizeof(uname.Version) 200 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil { 201 return err 202 } 203 204 // The version might have newlines or tabs in it, convert them to 205 // spaces. 206 for i, b := range uname.Version { 207 if b == '\n' || b == '\t' { 208 if i == len(uname.Version)-1 { 209 uname.Version[i] = 0 210 } else { 211 uname.Version[i] = ' ' 212 } 213 } 214 } 215 216 mib = []_C_int{CTL_HW, HW_MACHINE} 217 n = unsafe.Sizeof(uname.Machine) 218 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil { 219 return err 220 } 221 222 return nil 223} 224 225/* 226 * Exposed directly 227 */ 228//sys Access(path string, mode uint32) (err error) 229//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 230//sys Chdir(path string) (err error) 231//sys Chflags(path string, flags int) (err error) 232//sys Chmod(path string, mode uint32) (err error) 233//sys Chown(path string, uid int, gid int) (err error) 234//sys Chroot(path string) (err error) 235//sys Close(fd int) (err error) 236//sys Dup(fd int) (nfd int, err error) 237//sys Dup2(from int, to int) (err error) 238//sys Dup3(from int, to int, flags int) (err error) 239//sys Exit(code int) 240//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) 241//sys Fchdir(fd int) (err error) 242//sys Fchflags(fd int, flags int) (err error) 243//sys Fchmod(fd int, mode uint32) (err error) 244//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) 245//sys Fchown(fd int, uid int, gid int) (err error) 246//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) 247//sys Flock(fd int, how int) (err error) 248//sys Fpathconf(fd int, name int) (val int, err error) 249//sys Fstat(fd int, stat *Stat_t) (err error) 250//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 251//sys Fstatfs(fd int, stat *Statfs_t) (err error) 252//sys Fsync(fd int) (err error) 253//sys Ftruncate(fd int, length int64) (err error) 254//sysnb Getegid() (egid int) 255//sysnb Geteuid() (uid int) 256//sysnb Getgid() (gid int) 257//sysnb Getpgid(pid int) (pgid int, err error) 258//sysnb Getpgrp() (pgrp int) 259//sysnb Getpid() (pid int) 260//sysnb Getppid() (ppid int) 261//sys Getpriority(which int, who int) (prio int, err error) 262//sysnb Getrlimit(which int, lim *Rlimit) (err error) 263//sysnb Getrtable() (rtable int, err error) 264//sysnb Getrusage(who int, rusage *Rusage) (err error) 265//sysnb Getsid(pid int) (sid int, err error) 266//sysnb Gettimeofday(tv *Timeval) (err error) 267//sysnb Getuid() (uid int) 268//sys Issetugid() (tainted bool) 269//sys Kill(pid int, signum syscall.Signal) (err error) 270//sys Kqueue() (fd int, err error) 271//sys Lchown(path string, uid int, gid int) (err error) 272//sys Link(path string, link string) (err error) 273//sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error) 274//sys Listen(s int, backlog int) (err error) 275//sys Lstat(path string, stat *Stat_t) (err error) 276//sys Mkdir(path string, mode uint32) (err error) 277//sys Mkdirat(dirfd int, path string, mode uint32) (err error) 278//sys Mkfifo(path string, mode uint32) (err error) 279//sys Mkfifoat(dirfd int, path string, mode uint32) (err error) 280//sys Mknod(path string, mode uint32, dev int) (err error) 281//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) 282//sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 283//sys Open(path string, mode int, perm uint32) (fd int, err error) 284//sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error) 285//sys Pathconf(path string, name int) (val int, err error) 286//sys Pread(fd int, p []byte, offset int64) (n int, err error) 287//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) 288//sys read(fd int, p []byte) (n int, err error) 289//sys Readlink(path string, buf []byte) (n int, err error) 290//sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error) 291//sys Rename(from string, to string) (err error) 292//sys Renameat(fromfd int, from string, tofd int, to string) (err error) 293//sys Revoke(path string) (err error) 294//sys Rmdir(path string) (err error) 295//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 296//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) 297//sysnb Setegid(egid int) (err error) 298//sysnb Seteuid(euid int) (err error) 299//sysnb Setgid(gid int) (err error) 300//sys Setlogin(name string) (err error) 301//sysnb Setpgid(pid int, pgid int) (err error) 302//sys Setpriority(which int, who int, prio int) (err error) 303//sysnb Setregid(rgid int, egid int) (err error) 304//sysnb Setreuid(ruid int, euid int) (err error) 305//sysnb Setresgid(rgid int, egid int, sgid int) (err error) 306//sysnb Setresuid(ruid int, euid int, suid int) (err error) 307//sysnb Setrlimit(which int, lim *Rlimit) (err error) 308//sysnb Setrtable(rtable int) (err error) 309//sysnb Setsid() (pid int, err error) 310//sysnb Settimeofday(tp *Timeval) (err error) 311//sysnb Setuid(uid int) (err error) 312//sys Stat(path string, stat *Stat_t) (err error) 313//sys Statfs(path string, stat *Statfs_t) (err error) 314//sys Symlink(path string, link string) (err error) 315//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error) 316//sys Sync() (err error) 317//sys Truncate(path string, length int64) (err error) 318//sys Umask(newmask int) (oldmask int) 319//sys Unlink(path string) (err error) 320//sys Unlinkat(dirfd int, path string, flags int) (err error) 321//sys Unmount(path string, flags int) (err error) 322//sys write(fd int, p []byte) (n int, err error) 323//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 324//sys munmap(addr uintptr, length uintptr) (err error) 325//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 326//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 327//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error) 328 329/* 330 * Unimplemented 331 */ 332// __getcwd 333// __semctl 334// __syscall 335// __sysctl 336// adjfreq 337// break 338// clock_getres 339// clock_gettime 340// clock_settime 341// closefrom 342// execve 343// fhopen 344// fhstat 345// fhstatfs 346// fork 347// futimens 348// getfh 349// getgid 350// getitimer 351// getlogin 352// getresgid 353// getresuid 354// getthrid 355// ktrace 356// lfs_bmapv 357// lfs_markv 358// lfs_segclean 359// lfs_segwait 360// mincore 361// minherit 362// mount 363// mquery 364// msgctl 365// msgget 366// msgrcv 367// msgsnd 368// nfssvc 369// nnpfspioctl 370// preadv 371// profil 372// pwritev 373// quotactl 374// readv 375// reboot 376// renameat 377// rfork 378// sched_yield 379// semget 380// semop 381// setgroups 382// setitimer 383// setsockopt 384// shmat 385// shmctl 386// shmdt 387// shmget 388// sigaction 389// sigaltstack 390// sigpending 391// sigprocmask 392// sigreturn 393// sigsuspend 394// sysarch 395// syscall 396// threxit 397// thrsigdivert 398// thrsleep 399// thrwakeup 400// vfork 401// writev 402