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