1// Copyright 2009 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// DragonFly BSD 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 "unsafe" 16 17//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL 18 19// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets. 20type SockaddrDatalink struct { 21 Len uint8 22 Family uint8 23 Index uint16 24 Type uint8 25 Nlen uint8 26 Alen uint8 27 Slen uint8 28 Data [12]int8 29 Rcf uint16 30 Route [16]uint16 31 raw RawSockaddrDatalink 32} 33 34// Translate "kern.hostname" to []_C_int{0,1,2,3}. 35func nametomib(name string) (mib []_C_int, err error) { 36 const siz = unsafe.Sizeof(mib[0]) 37 38 // NOTE(rsc): It seems strange to set the buffer to have 39 // size CTL_MAXNAME+2 but use only CTL_MAXNAME 40 // as the size. I don't know why the +2 is here, but the 41 // kernel uses +2 for its own implementation of this function. 42 // I am scared that if we don't include the +2 here, the kernel 43 // will silently write 2 words farther than we specify 44 // and we'll get memory corruption. 45 var buf [CTL_MAXNAME + 2]_C_int 46 n := uintptr(CTL_MAXNAME) * siz 47 48 p := (*byte)(unsafe.Pointer(&buf[0])) 49 bytes, err := ByteSliceFromString(name) 50 if err != nil { 51 return nil, err 52 } 53 54 // Magic sysctl: "setting" 0.3 to a string name 55 // lets you read back the array of integers form. 56 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { 57 return nil, err 58 } 59 return buf[0 : n/siz], nil 60} 61 62func direntIno(buf []byte) (uint64, bool) { 63 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) 64} 65 66func direntReclen(buf []byte) (uint64, bool) { 67 namlen, ok := direntNamlen(buf) 68 if !ok { 69 return 0, false 70 } 71 return (16 + namlen + 1 + 7) &^ 7, true 72} 73 74func direntNamlen(buf []byte) (uint64, bool) { 75 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) 76} 77 78//sysnb pipe() (r int, w int, err error) 79 80func Pipe(p []int) (err error) { 81 if len(p) != 2 { 82 return EINVAL 83 } 84 p[0], p[1], err = pipe() 85 return 86} 87 88//sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error) 89func Pread(fd int, p []byte, offset int64) (n int, err error) { 90 return extpread(fd, p, 0, offset) 91} 92 93//sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error) 94func Pwrite(fd int, p []byte, offset int64) (n int, err error) { 95 return extpwrite(fd, p, 0, offset) 96} 97 98func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 99 var rsa RawSockaddrAny 100 var len _Socklen = SizeofSockaddrAny 101 nfd, err = accept4(fd, &rsa, &len, flags) 102 if err != nil { 103 return 104 } 105 if len > SizeofSockaddrAny { 106 panic("RawSockaddrAny too small") 107 } 108 sa, err = anyToSockaddr(fd, &rsa) 109 if err != nil { 110 Close(nfd) 111 nfd = 0 112 } 113 return 114} 115 116const ImplementsGetwd = true 117 118//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD 119 120func Getwd() (string, error) { 121 var buf [PathMax]byte 122 _, err := Getcwd(buf[0:]) 123 if err != nil { 124 return "", err 125 } 126 n := clen(buf[:]) 127 if n < 1 { 128 return "", EINVAL 129 } 130 return string(buf[:n]), nil 131} 132 133func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 134 var _p0 unsafe.Pointer 135 var bufsize uintptr 136 if len(buf) > 0 { 137 _p0 = unsafe.Pointer(&buf[0]) 138 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 139 } 140 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 141 n = int(r0) 142 if e1 != 0 { 143 err = e1 144 } 145 return 146} 147 148func setattrlistTimes(path string, times []Timespec, flags int) error { 149 // used on Darwin for UtimesNano 150 return ENOSYS 151} 152 153//sys ioctl(fd int, req uint, arg uintptr) (err error) 154 155func sysctlUname(mib []_C_int, old *byte, oldlen *uintptr) error { 156 err := sysctl(mib, old, oldlen, nil, 0) 157 if err != nil { 158 // Utsname members on Dragonfly are only 32 bytes and 159 // the syscall returns ENOMEM in case the actual value 160 // is longer. 161 if err == ENOMEM { 162 err = nil 163 } 164 } 165 return err 166} 167 168func Uname(uname *Utsname) error { 169 mib := []_C_int{CTL_KERN, KERN_OSTYPE} 170 n := unsafe.Sizeof(uname.Sysname) 171 if err := sysctlUname(mib, &uname.Sysname[0], &n); err != nil { 172 return err 173 } 174 uname.Sysname[unsafe.Sizeof(uname.Sysname)-1] = 0 175 176 mib = []_C_int{CTL_KERN, KERN_HOSTNAME} 177 n = unsafe.Sizeof(uname.Nodename) 178 if err := sysctlUname(mib, &uname.Nodename[0], &n); err != nil { 179 return err 180 } 181 uname.Nodename[unsafe.Sizeof(uname.Nodename)-1] = 0 182 183 mib = []_C_int{CTL_KERN, KERN_OSRELEASE} 184 n = unsafe.Sizeof(uname.Release) 185 if err := sysctlUname(mib, &uname.Release[0], &n); err != nil { 186 return err 187 } 188 uname.Release[unsafe.Sizeof(uname.Release)-1] = 0 189 190 mib = []_C_int{CTL_KERN, KERN_VERSION} 191 n = unsafe.Sizeof(uname.Version) 192 if err := sysctlUname(mib, &uname.Version[0], &n); err != nil { 193 return err 194 } 195 196 // The version might have newlines or tabs in it, convert them to 197 // spaces. 198 for i, b := range uname.Version { 199 if b == '\n' || b == '\t' { 200 if i == len(uname.Version)-1 { 201 uname.Version[i] = 0 202 } else { 203 uname.Version[i] = ' ' 204 } 205 } 206 } 207 208 mib = []_C_int{CTL_HW, HW_MACHINE} 209 n = unsafe.Sizeof(uname.Machine) 210 if err := sysctlUname(mib, &uname.Machine[0], &n); err != nil { 211 return err 212 } 213 uname.Machine[unsafe.Sizeof(uname.Machine)-1] = 0 214 215 return nil 216} 217 218func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 219 if raceenabled { 220 raceReleaseMerge(unsafe.Pointer(&ioSync)) 221 } 222 return sendfile(outfd, infd, offset, count) 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 Exit(code int) 239//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) 240//sys Fchdir(fd int) (err error) 241//sys Fchflags(fd int, flags int) (err error) 242//sys Fchmod(fd int, mode uint32) (err error) 243//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) 244//sys Fchown(fd int, uid int, gid int) (err error) 245//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) 246//sys Flock(fd int, how int) (err error) 247//sys Fpathconf(fd int, name int) (val int, err error) 248//sys Fstat(fd int, stat *Stat_t) (err error) 249//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 250//sys Fstatfs(fd int, stat *Statfs_t) (err error) 251//sys Fsync(fd int) (err error) 252//sys Ftruncate(fd int, length int64) (err error) 253//sys Getdents(fd int, buf []byte) (n int, err error) 254//sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 255//sys Getdtablesize() (size int) 256//sysnb Getegid() (egid int) 257//sysnb Geteuid() (uid int) 258//sysnb Getgid() (gid int) 259//sysnb Getpgid(pid int) (pgid int, err error) 260//sysnb Getpgrp() (pgrp int) 261//sysnb Getpid() (pid int) 262//sysnb Getppid() (ppid int) 263//sys Getpriority(which int, who int) (prio int, err error) 264//sysnb Getrlimit(which int, lim *Rlimit) (err error) 265//sysnb Getrusage(who int, rusage *Rusage) (err error) 266//sysnb Getsid(pid int) (sid int, err error) 267//sysnb Gettimeofday(tv *Timeval) (err error) 268//sysnb Getuid() (uid int) 269//sys Issetugid() (tainted bool) 270//sys Kill(pid int, signum syscall.Signal) (err error) 271//sys Kqueue() (fd int, err error) 272//sys Lchown(path string, uid int, gid int) (err error) 273//sys Link(path string, link string) (err error) 274//sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error) 275//sys Listen(s int, backlog int) (err error) 276//sys Lstat(path string, stat *Stat_t) (err error) 277//sys Mkdir(path string, mode uint32) (err error) 278//sys Mkdirat(dirfd int, path string, mode uint32) (err error) 279//sys Mkfifo(path string, mode uint32) (err error) 280//sys Mknod(path string, mode uint32, dev int) (err error) 281//sys Mknodat(fd 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 read(fd int, p []byte) (n int, err error) 287//sys Readlink(path string, buf []byte) (n int, err error) 288//sys Rename(from string, to string) (err error) 289//sys Renameat(fromfd int, from string, tofd int, to string) (err error) 290//sys Revoke(path string) (err error) 291//sys Rmdir(path string) (err error) 292//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 293//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) 294//sysnb Setegid(egid int) (err error) 295//sysnb Seteuid(euid int) (err error) 296//sysnb Setgid(gid int) (err error) 297//sys Setlogin(name string) (err error) 298//sysnb Setpgid(pid int, pgid int) (err error) 299//sys Setpriority(which int, who int, prio int) (err error) 300//sysnb Setregid(rgid int, egid int) (err error) 301//sysnb Setreuid(ruid int, euid int) (err error) 302//sysnb Setresgid(rgid int, egid int, sgid int) (err error) 303//sysnb Setresuid(ruid int, euid int, suid int) (err error) 304//sysnb Setrlimit(which int, lim *Rlimit) (err error) 305//sysnb Setsid() (pid int, err error) 306//sysnb Settimeofday(tp *Timeval) (err error) 307//sysnb Setuid(uid int) (err error) 308//sys Stat(path string, stat *Stat_t) (err error) 309//sys Statfs(path string, stat *Statfs_t) (err error) 310//sys Symlink(path string, link string) (err error) 311//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error) 312//sys Sync() (err error) 313//sys Truncate(path string, length int64) (err error) 314//sys Umask(newmask int) (oldmask int) 315//sys Undelete(path string) (err error) 316//sys Unlink(path string) (err error) 317//sys Unlinkat(dirfd int, path string, flags int) (err error) 318//sys Unmount(path string, flags int) (err error) 319//sys write(fd int, p []byte) (n int, err error) 320//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 321//sys munmap(addr uintptr, length uintptr) (err error) 322//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 323//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 324//sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error) 325//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error) 326 327/* 328 * Unimplemented 329 * TODO(jsing): Update this list for DragonFly. 330 */ 331// Profil 332// Sigaction 333// Sigprocmask 334// Getlogin 335// Sigpending 336// Sigaltstack 337// Reboot 338// Execve 339// Vfork 340// Sbrk 341// Sstk 342// Ovadvise 343// Mincore 344// Setitimer 345// Swapon 346// Select 347// Sigsuspend 348// Readv 349// Writev 350// Nfssvc 351// Getfh 352// Quotactl 353// Mount 354// Csops 355// Waitid 356// Add_profil 357// Kdebug_trace 358// Sigreturn 359// Atsocket 360// Kqueue_from_portset_np 361// Kqueue_portset 362// Getattrlist 363// Setattrlist 364// Getdirentriesattr 365// Searchfs 366// Delete 367// Copyfile 368// Watchevent 369// Waitevent 370// Modwatch 371// Getxattr 372// Fgetxattr 373// Setxattr 374// Fsetxattr 375// Removexattr 376// Fremovexattr 377// Listxattr 378// Flistxattr 379// Fsctl 380// Initgroups 381// Posix_spawn 382// Nfsclnt 383// Fhopen 384// Minherit 385// Semsys 386// Msgsys 387// Shmsys 388// Semctl 389// Semget 390// Semop 391// Msgctl 392// Msgget 393// Msgsnd 394// Msgrcv 395// Shmat 396// Shmctl 397// Shmdt 398// Shmget 399// Shm_open 400// Shm_unlink 401// Sem_open 402// Sem_close 403// Sem_unlink 404// Sem_wait 405// Sem_trywait 406// Sem_post 407// Sem_getvalue 408// Sem_init 409// Sem_destroy 410// Open_extended 411// Umask_extended 412// Stat_extended 413// Lstat_extended 414// Fstat_extended 415// Chmod_extended 416// Fchmod_extended 417// Access_extended 418// Settid 419// Gettid 420// Setsgroups 421// Getsgroups 422// Setwgroups 423// Getwgroups 424// Mkfifo_extended 425// Mkdir_extended 426// Identitysvc 427// Shared_region_check_np 428// Shared_region_map_np 429// __pthread_mutex_destroy 430// __pthread_mutex_init 431// __pthread_mutex_lock 432// __pthread_mutex_trylock 433// __pthread_mutex_unlock 434// __pthread_cond_init 435// __pthread_cond_destroy 436// __pthread_cond_broadcast 437// __pthread_cond_signal 438// Setsid_with_pid 439// __pthread_cond_timedwait 440// Aio_fsync 441// Aio_return 442// Aio_suspend 443// Aio_cancel 444// Aio_error 445// Aio_read 446// Aio_write 447// Lio_listio 448// __pthread_cond_wait 449// Iopolicysys 450// __pthread_kill 451// __pthread_sigmask 452// __sigwait 453// __disable_threadsignal 454// __pthread_markcancel 455// __pthread_canceled 456// __semwait_signal 457// Proc_info 458// Stat64_extended 459// Lstat64_extended 460// Fstat64_extended 461// __pthread_chdir 462// __pthread_fchdir 463// Audit 464// Auditon 465// Getauid 466// Setauid 467// Getaudit 468// Setaudit 469// Getaudit_addr 470// Setaudit_addr 471// Auditctl 472// Bsdthread_create 473// Bsdthread_terminate 474// Stack_snapshot 475// Bsdthread_register 476// Workq_open 477// Workq_ops 478// __mac_execve 479// __mac_syscall 480// __mac_get_file 481// __mac_set_file 482// __mac_get_link 483// __mac_set_link 484// __mac_get_proc 485// __mac_set_proc 486// __mac_get_fd 487// __mac_set_fd 488// __mac_get_pid 489// __mac_get_lcid 490// __mac_get_lctx 491// __mac_set_lctx 492// Setlcid 493// Read_nocancel 494// Write_nocancel 495// Open_nocancel 496// Close_nocancel 497// Wait4_nocancel 498// Recvmsg_nocancel 499// Sendmsg_nocancel 500// Recvfrom_nocancel 501// Accept_nocancel 502// Fcntl_nocancel 503// Select_nocancel 504// Fsync_nocancel 505// Connect_nocancel 506// Sigsuspend_nocancel 507// Readv_nocancel 508// Writev_nocancel 509// Sendto_nocancel 510// Pread_nocancel 511// Pwrite_nocancel 512// Waitid_nocancel 513// Msgsnd_nocancel 514// Msgrcv_nocancel 515// Sem_wait_nocancel 516// Aio_suspend_nocancel 517// __sigwait_nocancel 518// __semwait_signal_nocancel 519// __mac_mount 520// __mac_get_mount 521// __mac_getfsstat 522