github.com/Filosottile/go@v0.0.0-20170906193555-dbed9972d994/src/syscall/syscall_dragonfly.go (about) 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 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 [12]int8 26 Rcf uint16 27 Route [16]uint16 28 raw RawSockaddrDatalink 29 } 30 31 // Translate "kern.hostname" to []_C_int{0,1,2,3}. 32 func nametomib(name string) (mib []_C_int, err error) { 33 const siz = unsafe.Sizeof(mib[0]) 34 35 // NOTE(rsc): It seems strange to set the buffer to have 36 // size CTL_MAXNAME+2 but use only CTL_MAXNAME 37 // as the size. I don't know why the +2 is here, but the 38 // kernel uses +2 for its own implementation of this function. 39 // I am scared that if we don't include the +2 here, the kernel 40 // will silently write 2 words farther than we specify 41 // and we'll get memory corruption. 42 var buf [CTL_MAXNAME + 2]_C_int 43 n := uintptr(CTL_MAXNAME) * siz 44 45 p := (*byte)(unsafe.Pointer(&buf[0])) 46 bytes, err := ByteSliceFromString(name) 47 if err != nil { 48 return nil, err 49 } 50 51 // Magic sysctl: "setting" 0.3 to a string name 52 // lets you read back the array of integers form. 53 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { 54 return nil, err 55 } 56 return buf[0 : n/siz], nil 57 } 58 59 func direntIno(buf []byte) (uint64, bool) { 60 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) 61 } 62 63 func direntReclen(buf []byte) (uint64, bool) { 64 namlen, ok := direntNamlen(buf) 65 if !ok { 66 return 0, false 67 } 68 return (16 + namlen + 1 + 7) &^ 7, true 69 } 70 71 func direntNamlen(buf []byte) (uint64, bool) { 72 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) 73 } 74 75 //sysnb pipe() (r int, w int, err error) 76 77 func Pipe(p []int) (err error) { 78 if len(p) != 2 { 79 return EINVAL 80 } 81 p[0], p[1], err = pipe() 82 return 83 } 84 85 //sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error) 86 func Pread(fd int, p []byte, offset int64) (n int, err error) { 87 return extpread(fd, p, 0, offset) 88 } 89 90 //sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error) 91 func Pwrite(fd int, p []byte, offset int64) (n int, err error) { 92 return extpwrite(fd, p, 0, offset) 93 } 94 95 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 96 var rsa RawSockaddrAny 97 var len _Socklen = SizeofSockaddrAny 98 nfd, err = accept4(fd, &rsa, &len, flags) 99 if err != nil { 100 return 101 } 102 if len > SizeofSockaddrAny { 103 panic("RawSockaddrAny too small") 104 } 105 sa, err = anyToSockaddr(&rsa) 106 if err != nil { 107 Close(nfd) 108 nfd = 0 109 } 110 return 111 } 112 113 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 114 var _p0 unsafe.Pointer 115 var bufsize uintptr 116 if len(buf) > 0 { 117 _p0 = unsafe.Pointer(&buf[0]) 118 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 119 } 120 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 121 n = int(r0) 122 if e1 != 0 { 123 err = e1 124 } 125 return 126 } 127 128 /* 129 * Exposed directly 130 */ 131 //sys Access(path string, mode uint32) (err error) 132 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 133 //sys Chdir(path string) (err error) 134 //sys Chflags(path string, flags int) (err error) 135 //sys Chmod(path string, mode uint32) (err error) 136 //sys Chown(path string, uid int, gid int) (err error) 137 //sys Chroot(path string) (err error) 138 //sys Close(fd int) (err error) 139 //sys Dup(fd int) (nfd int, err error) 140 //sys Dup2(from int, to int) (err error) 141 //sys Exit(code int) 142 //sys Fchdir(fd int) (err error) 143 //sys Fchflags(fd int, flags int) (err error) 144 //sys Fchmod(fd int, mode uint32) (err error) 145 //sys Fchown(fd int, uid int, gid int) (err error) 146 //sys Flock(fd int, how int) (err error) 147 //sys Fpathconf(fd int, name int) (val int, err error) 148 //sys Fstat(fd int, stat *Stat_t) (err error) 149 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 150 //sys Fsync(fd int) (err error) 151 //sys Ftruncate(fd int, length int64) (err error) 152 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 153 //sys Getdtablesize() (size int) 154 //sysnb Getegid() (egid int) 155 //sysnb Geteuid() (uid int) 156 //sysnb Getgid() (gid int) 157 //sysnb Getpgid(pid int) (pgid int, err error) 158 //sysnb Getpgrp() (pgrp int) 159 //sysnb Getpid() (pid int) 160 //sysnb Getppid() (ppid int) 161 //sys Getpriority(which int, who int) (prio int, err error) 162 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 163 //sysnb Getrusage(who int, rusage *Rusage) (err error) 164 //sysnb Getsid(pid int) (sid int, err error) 165 //sysnb Gettimeofday(tv *Timeval) (err error) 166 //sysnb Getuid() (uid int) 167 //sys Issetugid() (tainted bool) 168 //sys Kill(pid int, signum Signal) (err error) 169 //sys Kqueue() (fd int, err error) 170 //sys Lchown(path string, uid int, gid int) (err error) 171 //sys Link(path string, link string) (err error) 172 //sys Listen(s int, backlog int) (err error) 173 //sys Lstat(path string, stat *Stat_t) (err error) 174 //sys Mkdir(path string, mode uint32) (err error) 175 //sys Mkfifo(path string, mode uint32) (err error) 176 //sys Mknod(path string, mode uint32, dev int) (err error) 177 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 178 //sys Open(path string, mode int, perm uint32) (fd int, err error) 179 //sys Pathconf(path string, name int) (val int, err error) 180 //sys read(fd int, p []byte) (n int, err error) 181 //sys Readlink(path string, buf []byte) (n int, err error) 182 //sys Rename(from string, to string) (err error) 183 //sys Revoke(path string) (err error) 184 //sys Rmdir(path string) (err error) 185 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 186 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 187 //sysnb Setegid(egid int) (err error) 188 //sysnb Seteuid(euid int) (err error) 189 //sysnb Setgid(gid int) (err error) 190 //sys Setlogin(name string) (err error) 191 //sysnb Setpgid(pid int, pgid int) (err error) 192 //sys Setpriority(which int, who int, prio int) (err error) 193 //sysnb Setregid(rgid int, egid int) (err error) 194 //sysnb Setreuid(ruid int, euid int) (err error) 195 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 196 //sysnb Setsid() (pid int, err error) 197 //sysnb Settimeofday(tp *Timeval) (err error) 198 //sysnb Setuid(uid int) (err error) 199 //sys Stat(path string, stat *Stat_t) (err error) 200 //sys Statfs(path string, stat *Statfs_t) (err error) 201 //sys Symlink(path string, link string) (err error) 202 //sys Sync() (err error) 203 //sys Truncate(path string, length int64) (err error) 204 //sys Umask(newmask int) (oldmask int) 205 //sys Undelete(path string) (err error) 206 //sys Unlink(path string) (err error) 207 //sys Unmount(path string, flags int) (err error) 208 //sys write(fd int, p []byte) (n int, err error) 209 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 210 //sys munmap(addr uintptr, length uintptr) (err error) 211 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 212 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 213 //sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error) 214 //sys utimensat(dirfd int, path string, times *[2]Timespec, flag int) (err error) 215 216 /* 217 * Unimplemented 218 * TODO(jsing): Update this list for DragonFly. 219 */ 220 // Profil 221 // Sigaction 222 // Sigprocmask 223 // Getlogin 224 // Sigpending 225 // Sigaltstack 226 // Ioctl 227 // Reboot 228 // Execve 229 // Vfork 230 // Sbrk 231 // Sstk 232 // Ovadvise 233 // Mincore 234 // Setitimer 235 // Swapon 236 // Select 237 // Sigsuspend 238 // Readv 239 // Writev 240 // Nfssvc 241 // Getfh 242 // Quotactl 243 // Mount 244 // Csops 245 // Waitid 246 // Add_profil 247 // Kdebug_trace 248 // Sigreturn 249 // Mmap 250 // Mlock 251 // Munlock 252 // Atsocket 253 // Kqueue_from_portset_np 254 // Kqueue_portset 255 // Getattrlist 256 // Setattrlist 257 // Getdirentriesattr 258 // Searchfs 259 // Delete 260 // Copyfile 261 // Poll 262 // Watchevent 263 // Waitevent 264 // Modwatch 265 // Getxattr 266 // Fgetxattr 267 // Setxattr 268 // Fsetxattr 269 // Removexattr 270 // Fremovexattr 271 // Listxattr 272 // Flistxattr 273 // Fsctl 274 // Initgroups 275 // Posix_spawn 276 // Nfsclnt 277 // Fhopen 278 // Minherit 279 // Semsys 280 // Msgsys 281 // Shmsys 282 // Semctl 283 // Semget 284 // Semop 285 // Msgctl 286 // Msgget 287 // Msgsnd 288 // Msgrcv 289 // Shmat 290 // Shmctl 291 // Shmdt 292 // Shmget 293 // Shm_open 294 // Shm_unlink 295 // Sem_open 296 // Sem_close 297 // Sem_unlink 298 // Sem_wait 299 // Sem_trywait 300 // Sem_post 301 // Sem_getvalue 302 // Sem_init 303 // Sem_destroy 304 // Open_extended 305 // Umask_extended 306 // Stat_extended 307 // Lstat_extended 308 // Fstat_extended 309 // Chmod_extended 310 // Fchmod_extended 311 // Access_extended 312 // Settid 313 // Gettid 314 // Setsgroups 315 // Getsgroups 316 // Setwgroups 317 // Getwgroups 318 // Mkfifo_extended 319 // Mkdir_extended 320 // Identitysvc 321 // Shared_region_check_np 322 // Shared_region_map_np 323 // __pthread_mutex_destroy 324 // __pthread_mutex_init 325 // __pthread_mutex_lock 326 // __pthread_mutex_trylock 327 // __pthread_mutex_unlock 328 // __pthread_cond_init 329 // __pthread_cond_destroy 330 // __pthread_cond_broadcast 331 // __pthread_cond_signal 332 // Setsid_with_pid 333 // __pthread_cond_timedwait 334 // Aio_fsync 335 // Aio_return 336 // Aio_suspend 337 // Aio_cancel 338 // Aio_error 339 // Aio_read 340 // Aio_write 341 // Lio_listio 342 // __pthread_cond_wait 343 // Iopolicysys 344 // Mlockall 345 // Munlockall 346 // __pthread_kill 347 // __pthread_sigmask 348 // __sigwait 349 // __disable_threadsignal 350 // __pthread_markcancel 351 // __pthread_canceled 352 // __semwait_signal 353 // Proc_info 354 // Stat64_extended 355 // Lstat64_extended 356 // Fstat64_extended 357 // __pthread_chdir 358 // __pthread_fchdir 359 // Audit 360 // Auditon 361 // Getauid 362 // Setauid 363 // Getaudit 364 // Setaudit 365 // Getaudit_addr 366 // Setaudit_addr 367 // Auditctl 368 // Bsdthread_create 369 // Bsdthread_terminate 370 // Stack_snapshot 371 // Bsdthread_register 372 // Workq_open 373 // Workq_ops 374 // __mac_execve 375 // __mac_syscall 376 // __mac_get_file 377 // __mac_set_file 378 // __mac_get_link 379 // __mac_set_link 380 // __mac_get_proc 381 // __mac_set_proc 382 // __mac_get_fd 383 // __mac_set_fd 384 // __mac_get_pid 385 // __mac_get_lcid 386 // __mac_get_lctx 387 // __mac_set_lctx 388 // Setlcid 389 // Read_nocancel 390 // Write_nocancel 391 // Open_nocancel 392 // Close_nocancel 393 // Wait4_nocancel 394 // Recvmsg_nocancel 395 // Sendmsg_nocancel 396 // Recvfrom_nocancel 397 // Accept_nocancel 398 // Msync_nocancel 399 // Fcntl_nocancel 400 // Select_nocancel 401 // Fsync_nocancel 402 // Connect_nocancel 403 // Sigsuspend_nocancel 404 // Readv_nocancel 405 // Writev_nocancel 406 // Sendto_nocancel 407 // Pread_nocancel 408 // Pwrite_nocancel 409 // Waitid_nocancel 410 // Poll_nocancel 411 // Msgsnd_nocancel 412 // Msgrcv_nocancel 413 // Sem_wait_nocancel 414 // Aio_suspend_nocancel 415 // __sigwait_nocancel 416 // __semwait_signal_nocancel 417 // __mac_mount 418 // __mac_get_mount 419 // __mac_getfsstat