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 // DragonflyBSD 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) & ^uint64(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 Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 96 var _p0 unsafe.Pointer 97 var bufsize uintptr 98 if len(buf) > 0 { 99 _p0 = unsafe.Pointer(&buf[0]) 100 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 101 } 102 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 103 use(unsafe.Pointer(_p0)) 104 n = int(r0) 105 if e1 != 0 { 106 err = e1 107 } 108 return 109 } 110 111 /* 112 * Exposed directly 113 */ 114 //sys Access(path string, mode uint32) (err error) 115 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 116 //sys Chdir(path string) (err error) 117 //sys Chflags(path string, flags int) (err error) 118 //sys Chmod(path string, mode uint32) (err error) 119 //sys Chown(path string, uid int, gid int) (err error) 120 //sys Chroot(path string) (err error) 121 //sys Close(fd int) (err error) 122 //sys Dup(fd int) (nfd int, err error) 123 //sys Dup2(from int, to int) (err error) 124 //sys Exit(code int) 125 //sys Fchdir(fd int) (err error) 126 //sys Fchflags(fd int, flags int) (err error) 127 //sys Fchmod(fd int, mode uint32) (err error) 128 //sys Fchown(fd int, uid int, gid int) (err error) 129 //sys Flock(fd int, how int) (err error) 130 //sys Fpathconf(fd int, name int) (val int, err error) 131 //sys Fstat(fd int, stat *Stat_t) (err error) 132 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 133 //sys Fsync(fd int) (err error) 134 //sys Ftruncate(fd int, length int64) (err error) 135 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 136 //sys Getdtablesize() (size int) 137 //sysnb Getegid() (egid int) 138 //sysnb Geteuid() (uid int) 139 //sysnb Getgid() (gid int) 140 //sysnb Getpgid(pid int) (pgid int, err error) 141 //sysnb Getpgrp() (pgrp int) 142 //sysnb Getpid() (pid int) 143 //sysnb Getppid() (ppid int) 144 //sys Getpriority(which int, who int) (prio int, err error) 145 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 146 //sysnb Getrusage(who int, rusage *Rusage) (err error) 147 //sysnb Getsid(pid int) (sid int, err error) 148 //sysnb Gettimeofday(tv *Timeval) (err error) 149 //sysnb Getuid() (uid int) 150 //sys Issetugid() (tainted bool) 151 //sys Kill(pid int, signum Signal) (err error) 152 //sys Kqueue() (fd int, err error) 153 //sys Lchown(path string, uid int, gid int) (err error) 154 //sys Link(path string, link string) (err error) 155 //sys Listen(s int, backlog int) (err error) 156 //sys Lstat(path string, stat *Stat_t) (err error) 157 //sys Mkdir(path string, mode uint32) (err error) 158 //sys Mkfifo(path string, mode uint32) (err error) 159 //sys Mknod(path string, mode uint32, dev int) (err error) 160 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 161 //sys Open(path string, mode int, perm uint32) (fd int, err error) 162 //sys Pathconf(path string, name int) (val int, err error) 163 //sys read(fd int, p []byte) (n int, err error) 164 //sys Readlink(path string, buf []byte) (n int, err error) 165 //sys Rename(from string, to string) (err error) 166 //sys Revoke(path string) (err error) 167 //sys Rmdir(path string) (err error) 168 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 169 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 170 //sysnb Setegid(egid int) (err error) 171 //sysnb Seteuid(euid int) (err error) 172 //sysnb Setgid(gid int) (err error) 173 //sys Setlogin(name string) (err error) 174 //sysnb Setpgid(pid int, pgid int) (err error) 175 //sys Setpriority(which int, who int, prio int) (err error) 176 //sysnb Setregid(rgid int, egid int) (err error) 177 //sysnb Setreuid(ruid int, euid int) (err error) 178 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 179 //sysnb Setsid() (pid int, err error) 180 //sysnb Settimeofday(tp *Timeval) (err error) 181 //sysnb Setuid(uid int) (err error) 182 //sys Stat(path string, stat *Stat_t) (err error) 183 //sys Statfs(path string, stat *Statfs_t) (err error) 184 //sys Symlink(path string, link string) (err error) 185 //sys Sync() (err error) 186 //sys Truncate(path string, length int64) (err error) 187 //sys Umask(newmask int) (oldmask int) 188 //sys Undelete(path string) (err error) 189 //sys Unlink(path string) (err error) 190 //sys Unmount(path string, flags int) (err error) 191 //sys write(fd int, p []byte) (n int, err error) 192 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 193 //sys munmap(addr uintptr, length uintptr) (err error) 194 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 195 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 196 197 /* 198 * Unimplemented 199 * TODO(jsing): Update this list for DragonFly. 200 */ 201 // Profil 202 // Sigaction 203 // Sigprocmask 204 // Getlogin 205 // Sigpending 206 // Sigaltstack 207 // Ioctl 208 // Reboot 209 // Execve 210 // Vfork 211 // Sbrk 212 // Sstk 213 // Ovadvise 214 // Mincore 215 // Setitimer 216 // Swapon 217 // Select 218 // Sigsuspend 219 // Readv 220 // Writev 221 // Nfssvc 222 // Getfh 223 // Quotactl 224 // Mount 225 // Csops 226 // Waitid 227 // Add_profil 228 // Kdebug_trace 229 // Sigreturn 230 // Mmap 231 // Mlock 232 // Munlock 233 // Atsocket 234 // Kqueue_from_portset_np 235 // Kqueue_portset 236 // Getattrlist 237 // Setattrlist 238 // Getdirentriesattr 239 // Searchfs 240 // Delete 241 // Copyfile 242 // Poll 243 // Watchevent 244 // Waitevent 245 // Modwatch 246 // Getxattr 247 // Fgetxattr 248 // Setxattr 249 // Fsetxattr 250 // Removexattr 251 // Fremovexattr 252 // Listxattr 253 // Flistxattr 254 // Fsctl 255 // Initgroups 256 // Posix_spawn 257 // Nfsclnt 258 // Fhopen 259 // Minherit 260 // Semsys 261 // Msgsys 262 // Shmsys 263 // Semctl 264 // Semget 265 // Semop 266 // Msgctl 267 // Msgget 268 // Msgsnd 269 // Msgrcv 270 // Shmat 271 // Shmctl 272 // Shmdt 273 // Shmget 274 // Shm_open 275 // Shm_unlink 276 // Sem_open 277 // Sem_close 278 // Sem_unlink 279 // Sem_wait 280 // Sem_trywait 281 // Sem_post 282 // Sem_getvalue 283 // Sem_init 284 // Sem_destroy 285 // Open_extended 286 // Umask_extended 287 // Stat_extended 288 // Lstat_extended 289 // Fstat_extended 290 // Chmod_extended 291 // Fchmod_extended 292 // Access_extended 293 // Settid 294 // Gettid 295 // Setsgroups 296 // Getsgroups 297 // Setwgroups 298 // Getwgroups 299 // Mkfifo_extended 300 // Mkdir_extended 301 // Identitysvc 302 // Shared_region_check_np 303 // Shared_region_map_np 304 // __pthread_mutex_destroy 305 // __pthread_mutex_init 306 // __pthread_mutex_lock 307 // __pthread_mutex_trylock 308 // __pthread_mutex_unlock 309 // __pthread_cond_init 310 // __pthread_cond_destroy 311 // __pthread_cond_broadcast 312 // __pthread_cond_signal 313 // Setsid_with_pid 314 // __pthread_cond_timedwait 315 // Aio_fsync 316 // Aio_return 317 // Aio_suspend 318 // Aio_cancel 319 // Aio_error 320 // Aio_read 321 // Aio_write 322 // Lio_listio 323 // __pthread_cond_wait 324 // Iopolicysys 325 // Mlockall 326 // Munlockall 327 // __pthread_kill 328 // __pthread_sigmask 329 // __sigwait 330 // __disable_threadsignal 331 // __pthread_markcancel 332 // __pthread_canceled 333 // __semwait_signal 334 // Proc_info 335 // Stat64_extended 336 // Lstat64_extended 337 // Fstat64_extended 338 // __pthread_chdir 339 // __pthread_fchdir 340 // Audit 341 // Auditon 342 // Getauid 343 // Setauid 344 // Getaudit 345 // Setaudit 346 // Getaudit_addr 347 // Setaudit_addr 348 // Auditctl 349 // Bsdthread_create 350 // Bsdthread_terminate 351 // Stack_snapshot 352 // Bsdthread_register 353 // Workq_open 354 // Workq_ops 355 // __mac_execve 356 // __mac_syscall 357 // __mac_get_file 358 // __mac_set_file 359 // __mac_get_link 360 // __mac_set_link 361 // __mac_get_proc 362 // __mac_set_proc 363 // __mac_get_fd 364 // __mac_set_fd 365 // __mac_get_pid 366 // __mac_get_lcid 367 // __mac_get_lctx 368 // __mac_set_lctx 369 // Setlcid 370 // Read_nocancel 371 // Write_nocancel 372 // Open_nocancel 373 // Close_nocancel 374 // Wait4_nocancel 375 // Recvmsg_nocancel 376 // Sendmsg_nocancel 377 // Recvfrom_nocancel 378 // Accept_nocancel 379 // Msync_nocancel 380 // Fcntl_nocancel 381 // Select_nocancel 382 // Fsync_nocancel 383 // Connect_nocancel 384 // Sigsuspend_nocancel 385 // Readv_nocancel 386 // Writev_nocancel 387 // Sendto_nocancel 388 // Pread_nocancel 389 // Pwrite_nocancel 390 // Waitid_nocancel 391 // Poll_nocancel 392 // Msgsnd_nocancel 393 // Msgrcv_nocancel 394 // Sem_wait_nocancel 395 // Aio_suspend_nocancel 396 // __sigwait_nocancel 397 // __semwait_signal_nocancel 398 // __mac_mount 399 // __mac_get_mount 400 // __mac_getfsstat 401
