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 // FreeBSD 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 syscall 14 15 import "unsafe" 16 17 type SockaddrDatalink struct { 18 Len uint8 19 Family uint8 20 Index uint16 21 Type uint8 22 Nlen uint8 23 Alen uint8 24 Slen uint8 25 Data [46]int8 26 raw RawSockaddrDatalink 27 } 28 29 // Translate "kern.hostname" to []_C_int{0,1,2,3}. 30 func nametomib(name string) (mib []_C_int, err error) { 31 const siz = unsafe.Sizeof(mib[0]) 32 33 // NOTE(rsc): It seems strange to set the buffer to have 34 // size CTL_MAXNAME+2 but use only CTL_MAXNAME 35 // as the size. I don't know why the +2 is here, but the 36 // kernel uses +2 for its own implementation of this function. 37 // I am scared that if we don't include the +2 here, the kernel 38 // will silently write 2 words farther than we specify 39 // and we'll get memory corruption. 40 var buf [CTL_MAXNAME + 2]_C_int 41 n := uintptr(CTL_MAXNAME) * siz 42 43 p := (*byte)(unsafe.Pointer(&buf[0])) 44 bytes, err := ByteSliceFromString(name) 45 if err != nil { 46 return nil, err 47 } 48 49 // Magic sysctl: "setting" 0.3 to a string name 50 // lets you read back the array of integers form. 51 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { 52 return nil, err 53 } 54 return buf[0 : n/siz], nil 55 } 56 57 func direntIno(buf []byte) (uint64, bool) { 58 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) 59 } 60 61 func direntReclen(buf []byte) (uint64, bool) { 62 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) 63 } 64 65 func direntNamlen(buf []byte) (uint64, bool) { 66 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) 67 } 68 69 func Pipe(p []int) error { 70 return Pipe2(p, 0) 71 } 72 73 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 74 75 func Pipe2(p []int, flags int) error { 76 if len(p) != 2 { 77 return EINVAL 78 } 79 var pp [2]_C_int 80 err := pipe2(&pp, flags) 81 p[0] = int(pp[0]) 82 p[1] = int(pp[1]) 83 return err 84 } 85 86 func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) { 87 var value IPMreqn 88 vallen := _Socklen(SizeofIPMreqn) 89 errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) 90 return &value, errno 91 } 92 93 func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) { 94 return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq)) 95 } 96 97 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 98 var rsa RawSockaddrAny 99 var len _Socklen = SizeofSockaddrAny 100 nfd, err = accept4(fd, &rsa, &len, flags) 101 if err != nil { 102 return 103 } 104 if len > SizeofSockaddrAny { 105 panic("RawSockaddrAny too small") 106 } 107 sa, err = anyToSockaddr(&rsa) 108 if err != nil { 109 Close(nfd) 110 nfd = 0 111 } 112 return 113 } 114 115 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 116 var _p0 unsafe.Pointer 117 var bufsize uintptr 118 if len(buf) > 0 { 119 _p0 = unsafe.Pointer(&buf[0]) 120 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 121 } 122 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 123 n = int(r0) 124 if e1 != 0 { 125 err = e1 126 } 127 return 128 } 129 130 func setattrlistTimes(path string, times []Timespec) error { 131 // used on Darwin for UtimesNano 132 return ENOSYS 133 } 134 135 /* 136 * Exposed directly 137 */ 138 //sys Access(path string, mode uint32) (err error) 139 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 140 //sys Chdir(path string) (err error) 141 //sys Chflags(path string, flags int) (err error) 142 //sys Chmod(path string, mode uint32) (err error) 143 //sys Chown(path string, uid int, gid int) (err error) 144 //sys Chroot(path string) (err error) 145 //sys Close(fd int) (err error) 146 //sys Dup(fd int) (nfd int, err error) 147 //sys Dup2(from int, to int) (err error) 148 //sys Fchdir(fd int) (err error) 149 //sys Fchflags(fd int, flags int) (err error) 150 //sys Fchmod(fd int, mode uint32) (err error) 151 //sys Fchown(fd int, uid int, gid int) (err error) 152 //sys Flock(fd int, how int) (err error) 153 //sys Fpathconf(fd int, name int) (val int, err error) 154 //sys Fstat(fd int, stat *Stat_t) (err error) 155 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 156 //sys Fsync(fd int) (err error) 157 //sys Ftruncate(fd int, length int64) (err error) 158 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 159 //sys Getdtablesize() (size int) 160 //sysnb Getegid() (egid int) 161 //sysnb Geteuid() (uid int) 162 //sysnb Getgid() (gid int) 163 //sysnb Getpgid(pid int) (pgid int, err error) 164 //sysnb Getpgrp() (pgrp int) 165 //sysnb Getpid() (pid int) 166 //sysnb Getppid() (ppid int) 167 //sys Getpriority(which int, who int) (prio int, err error) 168 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 169 //sysnb Getrusage(who int, rusage *Rusage) (err error) 170 //sysnb Getsid(pid int) (sid int, err error) 171 //sysnb Gettimeofday(tv *Timeval) (err error) 172 //sysnb Getuid() (uid int) 173 //sys Issetugid() (tainted bool) 174 //sys Kill(pid int, signum Signal) (err error) 175 //sys Kqueue() (fd int, err error) 176 //sys Lchown(path string, uid int, gid int) (err error) 177 //sys Link(path string, link string) (err error) 178 //sys Listen(s int, backlog int) (err error) 179 //sys Lstat(path string, stat *Stat_t) (err error) 180 //sys Mkdir(path string, mode uint32) (err error) 181 //sys Mkfifo(path string, mode uint32) (err error) 182 //sys Mknod(path string, mode uint32, dev int) (err error) 183 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 184 //sys Open(path string, mode int, perm uint32) (fd int, err error) 185 //sys Pathconf(path string, name int) (val int, err error) 186 //sys Pread(fd int, p []byte, offset int64) (n int, err error) 187 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) 188 //sys read(fd int, p []byte) (n int, err error) 189 //sys Readlink(path string, buf []byte) (n int, err error) 190 //sys Rename(from string, to string) (err error) 191 //sys Revoke(path string) (err error) 192 //sys Rmdir(path string) (err error) 193 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 194 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 195 //sysnb Setegid(egid int) (err error) 196 //sysnb Seteuid(euid int) (err error) 197 //sysnb Setgid(gid int) (err error) 198 //sys Setlogin(name string) (err error) 199 //sysnb Setpgid(pid int, pgid int) (err error) 200 //sys Setpriority(which int, who int, prio int) (err error) 201 //sysnb Setregid(rgid int, egid int) (err error) 202 //sysnb Setreuid(ruid int, euid int) (err error) 203 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 204 //sysnb Setsid() (pid int, err error) 205 //sysnb Settimeofday(tp *Timeval) (err error) 206 //sysnb Setuid(uid int) (err error) 207 //sys Stat(path string, stat *Stat_t) (err error) 208 //sys Statfs(path string, stat *Statfs_t) (err error) 209 //sys Symlink(path string, link string) (err error) 210 //sys Sync() (err error) 211 //sys Truncate(path string, length int64) (err error) 212 //sys Umask(newmask int) (oldmask int) 213 //sys Undelete(path string) (err error) 214 //sys Unlink(path string) (err error) 215 //sys Unmount(path string, flags int) (err error) 216 //sys write(fd int, p []byte) (n int, err error) 217 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 218 //sys munmap(addr uintptr, length uintptr) (err error) 219 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 220 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 221 //sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error) 222 //sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error) 223 224 /* 225 * Unimplemented 226 */ 227 // Profil 228 // Sigaction 229 // Sigprocmask 230 // Getlogin 231 // Sigpending 232 // Sigaltstack 233 // Ioctl 234 // Reboot 235 // Execve 236 // Vfork 237 // Sbrk 238 // Sstk 239 // Ovadvise 240 // Mincore 241 // Setitimer 242 // Swapon 243 // Select 244 // Sigsuspend 245 // Readv 246 // Writev 247 // Nfssvc 248 // Getfh 249 // Quotactl 250 // Mount 251 // Csops 252 // Waitid 253 // Add_profil 254 // Kdebug_trace 255 // Sigreturn 256 // Mmap 257 // Mlock 258 // Munlock 259 // Atsocket 260 // Kqueue_from_portset_np 261 // Kqueue_portset 262 // Getattrlist 263 // Setattrlist 264 // Getdirentriesattr 265 // Searchfs 266 // Delete 267 // Copyfile 268 // Poll 269 // Watchevent 270 // Waitevent 271 // Modwatch 272 // Getxattr 273 // Fgetxattr 274 // Setxattr 275 // Fsetxattr 276 // Removexattr 277 // Fremovexattr 278 // Listxattr 279 // Flistxattr 280 // Fsctl 281 // Initgroups 282 // Posix_spawn 283 // Nfsclnt 284 // Fhopen 285 // Minherit 286 // Semsys 287 // Msgsys 288 // Shmsys 289 // Semctl 290 // Semget 291 // Semop 292 // Msgctl 293 // Msgget 294 // Msgsnd 295 // Msgrcv 296 // Shmat 297 // Shmctl 298 // Shmdt 299 // Shmget 300 // Shm_open 301 // Shm_unlink 302 // Sem_open 303 // Sem_close 304 // Sem_unlink 305 // Sem_wait 306 // Sem_trywait 307 // Sem_post 308 // Sem_getvalue 309 // Sem_init 310 // Sem_destroy 311 // Open_extended 312 // Umask_extended 313 // Stat_extended 314 // Lstat_extended 315 // Fstat_extended 316 // Chmod_extended 317 // Fchmod_extended 318 // Access_extended 319 // Settid 320 // Gettid 321 // Setsgroups 322 // Getsgroups 323 // Setwgroups 324 // Getwgroups 325 // Mkfifo_extended 326 // Mkdir_extended 327 // Identitysvc 328 // Shared_region_check_np 329 // Shared_region_map_np 330 // __pthread_mutex_destroy 331 // __pthread_mutex_init 332 // __pthread_mutex_lock 333 // __pthread_mutex_trylock 334 // __pthread_mutex_unlock 335 // __pthread_cond_init 336 // __pthread_cond_destroy 337 // __pthread_cond_broadcast 338 // __pthread_cond_signal 339 // Setsid_with_pid 340 // __pthread_cond_timedwait 341 // Aio_fsync 342 // Aio_return 343 // Aio_suspend 344 // Aio_cancel 345 // Aio_error 346 // Aio_read 347 // Aio_write 348 // Lio_listio 349 // __pthread_cond_wait 350 // Iopolicysys 351 // Mlockall 352 // Munlockall 353 // __pthread_kill 354 // __pthread_sigmask 355 // __sigwait 356 // __disable_threadsignal 357 // __pthread_markcancel 358 // __pthread_canceled 359 // __semwait_signal 360 // Proc_info 361 // Stat64_extended 362 // Lstat64_extended 363 // Fstat64_extended 364 // __pthread_chdir 365 // __pthread_fchdir 366 // Audit 367 // Auditon 368 // Getauid 369 // Setauid 370 // Getaudit 371 // Setaudit 372 // Getaudit_addr 373 // Setaudit_addr 374 // Auditctl 375 // Bsdthread_create 376 // Bsdthread_terminate 377 // Stack_snapshot 378 // Bsdthread_register 379 // Workq_open 380 // Workq_ops 381 // __mac_execve 382 // __mac_syscall 383 // __mac_get_file 384 // __mac_set_file 385 // __mac_get_link 386 // __mac_set_link 387 // __mac_get_proc 388 // __mac_set_proc 389 // __mac_get_fd 390 // __mac_set_fd 391 // __mac_get_pid 392 // __mac_get_lcid 393 // __mac_get_lctx 394 // __mac_set_lctx 395 // Setlcid 396 // Read_nocancel 397 // Write_nocancel 398 // Open_nocancel 399 // Close_nocancel 400 // Wait4_nocancel 401 // Recvmsg_nocancel 402 // Sendmsg_nocancel 403 // Recvfrom_nocancel 404 // Accept_nocancel 405 // Msync_nocancel 406 // Fcntl_nocancel 407 // Select_nocancel 408 // Fsync_nocancel 409 // Connect_nocancel 410 // Sigsuspend_nocancel 411 // Readv_nocancel 412 // Writev_nocancel 413 // Sendto_nocancel 414 // Pread_nocancel 415 // Pwrite_nocancel 416 // Waitid_nocancel 417 // Poll_nocancel 418 // Msgsnd_nocancel 419 // Msgrcv_nocancel 420 // Sem_wait_nocancel 421 // Aio_suspend_nocancel 422 // __sigwait_nocancel 423 // __semwait_signal_nocancel 424 // __mac_mount 425 // __mac_get_mount 426 // __mac_getfsstat 427
