github.com/euank/go@v0.0.0-20160829210321-495514729181/src/syscall/syscall_freebsd.go (about) 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 // ParseDirent parses up to max directory entries in buf, 58 // appending the names to names. It returns the number 59 // bytes consumed from buf, the number of entries added 60 // to names, and the new names slice. 61 func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) { 62 origlen := len(buf) 63 for max != 0 && len(buf) > 0 { 64 dirent := (*Dirent)(unsafe.Pointer(&buf[0])) 65 if dirent.Reclen == 0 { 66 buf = nil 67 break 68 } 69 buf = buf[dirent.Reclen:] 70 if dirent.Fileno == 0 { // File absent in directory. 71 continue 72 } 73 bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0])) 74 var name = string(bytes[0:dirent.Namlen]) 75 if name == "." || name == ".." { // Useless names 76 continue 77 } 78 max-- 79 count++ 80 names = append(names, name) 81 } 82 return origlen - len(buf), count, names 83 } 84 85 //sysnb pipe() (r int, w int, err error) 86 87 func Pipe(p []int) (err error) { 88 if len(p) != 2 { 89 return EINVAL 90 } 91 p[0], p[1], err = pipe() 92 return 93 } 94 95 func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) { 96 var value IPMreqn 97 vallen := _Socklen(SizeofIPMreqn) 98 errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) 99 return &value, errno 100 } 101 102 func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) { 103 return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq)) 104 } 105 106 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 107 var rsa RawSockaddrAny 108 var len _Socklen = SizeofSockaddrAny 109 nfd, err = accept4(fd, &rsa, &len, flags) 110 if err != nil { 111 return 112 } 113 if len > SizeofSockaddrAny { 114 panic("RawSockaddrAny too small") 115 } 116 sa, err = anyToSockaddr(&rsa) 117 if err != nil { 118 Close(nfd) 119 nfd = 0 120 } 121 return 122 } 123 124 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 125 var _p0 unsafe.Pointer 126 var bufsize uintptr 127 if len(buf) > 0 { 128 _p0 = unsafe.Pointer(&buf[0]) 129 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 130 } 131 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 132 use(unsafe.Pointer(_p0)) 133 n = int(r0) 134 if e1 != 0 { 135 err = e1 136 } 137 return 138 } 139 140 /* 141 * Exposed directly 142 */ 143 //sys Access(path string, mode uint32) (err error) 144 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 145 //sys Chdir(path string) (err error) 146 //sys Chflags(path string, flags int) (err error) 147 //sys Chmod(path string, mode uint32) (err error) 148 //sys Chown(path string, uid int, gid int) (err error) 149 //sys Chroot(path string) (err error) 150 //sys Close(fd int) (err error) 151 //sys Dup(fd int) (nfd int, err error) 152 //sys Dup2(from int, to int) (err error) 153 //sys Exit(code int) 154 //sys Fchdir(fd int) (err error) 155 //sys Fchflags(fd int, flags int) (err error) 156 //sys Fchmod(fd int, mode uint32) (err error) 157 //sys Fchown(fd int, uid int, gid int) (err error) 158 //sys Flock(fd int, how int) (err error) 159 //sys Fpathconf(fd int, name int) (val int, err error) 160 //sys Fstat(fd int, stat *Stat_t) (err error) 161 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 162 //sys Fsync(fd int) (err error) 163 //sys Ftruncate(fd int, length int64) (err error) 164 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 165 //sys Getdtablesize() (size int) 166 //sysnb Getegid() (egid int) 167 //sysnb Geteuid() (uid int) 168 //sysnb Getgid() (gid int) 169 //sysnb Getpgid(pid int) (pgid int, err error) 170 //sysnb Getpgrp() (pgrp int) 171 //sysnb Getpid() (pid int) 172 //sysnb Getppid() (ppid int) 173 //sys Getpriority(which int, who int) (prio int, err error) 174 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 175 //sysnb Getrusage(who int, rusage *Rusage) (err error) 176 //sysnb Getsid(pid int) (sid int, err error) 177 //sysnb Gettimeofday(tv *Timeval) (err error) 178 //sysnb Getuid() (uid int) 179 //sys Issetugid() (tainted bool) 180 //sys Kill(pid int, signum Signal) (err error) 181 //sys Kqueue() (fd int, err error) 182 //sys Lchown(path string, uid int, gid int) (err error) 183 //sys Link(path string, link string) (err error) 184 //sys Listen(s int, backlog int) (err error) 185 //sys Lstat(path string, stat *Stat_t) (err error) 186 //sys Mkdir(path string, mode uint32) (err error) 187 //sys Mkfifo(path string, mode uint32) (err error) 188 //sys Mknod(path string, mode uint32, dev int) (err error) 189 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 190 //sys Open(path string, mode int, perm uint32) (fd int, err error) 191 //sys Pathconf(path string, name int) (val int, err error) 192 //sys Pread(fd int, p []byte, offset int64) (n int, err error) 193 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) 194 //sys read(fd int, p []byte) (n int, err error) 195 //sys Readlink(path string, buf []byte) (n int, err error) 196 //sys Rename(from string, to string) (err error) 197 //sys Revoke(path string) (err error) 198 //sys Rmdir(path string) (err error) 199 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 200 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 201 //sysnb Setegid(egid int) (err error) 202 //sysnb Seteuid(euid int) (err error) 203 //sysnb Setgid(gid int) (err error) 204 //sys Setlogin(name string) (err error) 205 //sysnb Setpgid(pid int, pgid int) (err error) 206 //sys Setpriority(which int, who int, prio int) (err error) 207 //sysnb Setregid(rgid int, egid int) (err error) 208 //sysnb Setreuid(ruid int, euid int) (err error) 209 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 210 //sysnb Setsid() (pid int, err error) 211 //sysnb Settimeofday(tp *Timeval) (err error) 212 //sysnb Setuid(uid int) (err error) 213 //sys Stat(path string, stat *Stat_t) (err error) 214 //sys Statfs(path string, stat *Statfs_t) (err error) 215 //sys Symlink(path string, link string) (err error) 216 //sys Sync() (err error) 217 //sys Truncate(path string, length int64) (err error) 218 //sys Umask(newmask int) (oldmask int) 219 //sys Undelete(path string) (err error) 220 //sys Unlink(path string) (err error) 221 //sys Unmount(path string, flags int) (err error) 222 //sys write(fd int, p []byte) (n int, err error) 223 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 224 //sys munmap(addr uintptr, length uintptr) (err error) 225 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 226 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 227 //sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error) 228 229 /* 230 * Unimplemented 231 */ 232 // Profil 233 // Sigaction 234 // Sigprocmask 235 // Getlogin 236 // Sigpending 237 // Sigaltstack 238 // Ioctl 239 // Reboot 240 // Execve 241 // Vfork 242 // Sbrk 243 // Sstk 244 // Ovadvise 245 // Mincore 246 // Setitimer 247 // Swapon 248 // Select 249 // Sigsuspend 250 // Readv 251 // Writev 252 // Nfssvc 253 // Getfh 254 // Quotactl 255 // Mount 256 // Csops 257 // Waitid 258 // Add_profil 259 // Kdebug_trace 260 // Sigreturn 261 // Mmap 262 // Mlock 263 // Munlock 264 // Atsocket 265 // Kqueue_from_portset_np 266 // Kqueue_portset 267 // Getattrlist 268 // Setattrlist 269 // Getdirentriesattr 270 // Searchfs 271 // Delete 272 // Copyfile 273 // Poll 274 // Watchevent 275 // Waitevent 276 // Modwatch 277 // Getxattr 278 // Fgetxattr 279 // Setxattr 280 // Fsetxattr 281 // Removexattr 282 // Fremovexattr 283 // Listxattr 284 // Flistxattr 285 // Fsctl 286 // Initgroups 287 // Posix_spawn 288 // Nfsclnt 289 // Fhopen 290 // Minherit 291 // Semsys 292 // Msgsys 293 // Shmsys 294 // Semctl 295 // Semget 296 // Semop 297 // Msgctl 298 // Msgget 299 // Msgsnd 300 // Msgrcv 301 // Shmat 302 // Shmctl 303 // Shmdt 304 // Shmget 305 // Shm_open 306 // Shm_unlink 307 // Sem_open 308 // Sem_close 309 // Sem_unlink 310 // Sem_wait 311 // Sem_trywait 312 // Sem_post 313 // Sem_getvalue 314 // Sem_init 315 // Sem_destroy 316 // Open_extended 317 // Umask_extended 318 // Stat_extended 319 // Lstat_extended 320 // Fstat_extended 321 // Chmod_extended 322 // Fchmod_extended 323 // Access_extended 324 // Settid 325 // Gettid 326 // Setsgroups 327 // Getsgroups 328 // Setwgroups 329 // Getwgroups 330 // Mkfifo_extended 331 // Mkdir_extended 332 // Identitysvc 333 // Shared_region_check_np 334 // Shared_region_map_np 335 // __pthread_mutex_destroy 336 // __pthread_mutex_init 337 // __pthread_mutex_lock 338 // __pthread_mutex_trylock 339 // __pthread_mutex_unlock 340 // __pthread_cond_init 341 // __pthread_cond_destroy 342 // __pthread_cond_broadcast 343 // __pthread_cond_signal 344 // Setsid_with_pid 345 // __pthread_cond_timedwait 346 // Aio_fsync 347 // Aio_return 348 // Aio_suspend 349 // Aio_cancel 350 // Aio_error 351 // Aio_read 352 // Aio_write 353 // Lio_listio 354 // __pthread_cond_wait 355 // Iopolicysys 356 // Mlockall 357 // Munlockall 358 // __pthread_kill 359 // __pthread_sigmask 360 // __sigwait 361 // __disable_threadsignal 362 // __pthread_markcancel 363 // __pthread_canceled 364 // __semwait_signal 365 // Proc_info 366 // Stat64_extended 367 // Lstat64_extended 368 // Fstat64_extended 369 // __pthread_chdir 370 // __pthread_fchdir 371 // Audit 372 // Auditon 373 // Getauid 374 // Setauid 375 // Getaudit 376 // Setaudit 377 // Getaudit_addr 378 // Setaudit_addr 379 // Auditctl 380 // Bsdthread_create 381 // Bsdthread_terminate 382 // Stack_snapshot 383 // Bsdthread_register 384 // Workq_open 385 // Workq_ops 386 // __mac_execve 387 // __mac_syscall 388 // __mac_get_file 389 // __mac_set_file 390 // __mac_get_link 391 // __mac_set_link 392 // __mac_get_proc 393 // __mac_set_proc 394 // __mac_get_fd 395 // __mac_set_fd 396 // __mac_get_pid 397 // __mac_get_lcid 398 // __mac_get_lctx 399 // __mac_set_lctx 400 // Setlcid 401 // Read_nocancel 402 // Write_nocancel 403 // Open_nocancel 404 // Close_nocancel 405 // Wait4_nocancel 406 // Recvmsg_nocancel 407 // Sendmsg_nocancel 408 // Recvfrom_nocancel 409 // Accept_nocancel 410 // Msync_nocancel 411 // Fcntl_nocancel 412 // Select_nocancel 413 // Fsync_nocancel 414 // Connect_nocancel 415 // Sigsuspend_nocancel 416 // Readv_nocancel 417 // Writev_nocancel 418 // Sendto_nocancel 419 // Pread_nocancel 420 // Pwrite_nocancel 421 // Waitid_nocancel 422 // Poll_nocancel 423 // Msgsnd_nocancel 424 // Msgrcv_nocancel 425 // Sem_wait_nocancel 426 // Aio_suspend_nocancel 427 // __sigwait_nocancel 428 // __semwait_signal_nocancel 429 // __mac_mount 430 // __mac_get_mount 431 // __mac_getfsstat