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 // ParseDirent parses up to max directory entries in buf, 60 // appending the names to names. It returns the number 61 // bytes consumed from buf, the number of entries added 62 // to names, and the new names slice. 63 func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) { 64 origlen := len(buf) 65 for max != 0 && len(buf) > 0 { 66 dirent := (*Dirent)(unsafe.Pointer(&buf[0])) 67 reclen := int(16+dirent.Namlen+1+7) & ^7 68 buf = buf[reclen:] 69 if dirent.Fileno == 0 { // File absent in directory. 70 continue 71 } 72 bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0])) 73 var name = string(bytes[0:dirent.Namlen]) 74 if name == "." || name == ".." { // Useless names 75 continue 76 } 77 max-- 78 count++ 79 names = append(names, name) 80 } 81 return origlen - len(buf), count, names 82 } 83 84 //sysnb pipe() (r int, w int, err error) 85 86 func Pipe(p []int) (err error) { 87 if len(p) != 2 { 88 return EINVAL 89 } 90 p[0], p[1], err = pipe() 91 return 92 } 93 94 //sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error) 95 func Pread(fd int, p []byte, offset int64) (n int, err error) { 96 return extpread(fd, p, 0, offset) 97 } 98 99 //sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error) 100 func Pwrite(fd int, p []byte, offset int64) (n int, err error) { 101 return extpwrite(fd, p, 0, offset) 102 } 103 104 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 105 var _p0 unsafe.Pointer 106 var bufsize uintptr 107 if len(buf) > 0 { 108 _p0 = unsafe.Pointer(&buf[0]) 109 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 110 } 111 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 112 n = int(r0) 113 if e1 != 0 { 114 err = e1 115 } 116 return 117 } 118 119 /* 120 * Exposed directly 121 */ 122 //sys Access(path string, mode uint32) (err error) 123 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 124 //sys Chdir(path string) (err error) 125 //sys Chflags(path string, flags int) (err error) 126 //sys Chmod(path string, mode uint32) (err error) 127 //sys Chown(path string, uid int, gid int) (err error) 128 //sys Chroot(path string) (err error) 129 //sys Close(fd int) (err error) 130 //sys Dup(fd int) (nfd int, err error) 131 //sys Dup2(from int, to int) (err error) 132 //sys Exit(code int) 133 //sys Fchdir(fd int) (err error) 134 //sys Fchflags(fd int, flags int) (err error) 135 //sys Fchmod(fd int, mode uint32) (err error) 136 //sys Fchown(fd int, uid int, gid int) (err error) 137 //sys Flock(fd int, how int) (err error) 138 //sys Fpathconf(fd int, name int) (val int, err error) 139 //sys Fstat(fd int, stat *Stat_t) (err error) 140 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 141 //sys Fsync(fd int) (err error) 142 //sys Ftruncate(fd int, length int64) (err error) 143 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 144 //sys Getdtablesize() (size int) 145 //sysnb Getegid() (egid int) 146 //sysnb Geteuid() (uid int) 147 //sysnb Getgid() (gid int) 148 //sysnb Getpgid(pid int) (pgid int, err error) 149 //sysnb Getpgrp() (pgrp int) 150 //sysnb Getpid() (pid int) 151 //sysnb Getppid() (ppid int) 152 //sys Getpriority(which int, who int) (prio int, err error) 153 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 154 //sysnb Getrusage(who int, rusage *Rusage) (err error) 155 //sysnb Getsid(pid int) (sid int, err error) 156 //sysnb Gettimeofday(tv *Timeval) (err error) 157 //sysnb Getuid() (uid int) 158 //sys Issetugid() (tainted bool) 159 //sys Kill(pid int, signum Signal) (err error) 160 //sys Kqueue() (fd int, err error) 161 //sys Lchown(path string, uid int, gid int) (err error) 162 //sys Link(path string, link string) (err error) 163 //sys Listen(s int, backlog int) (err error) 164 //sys Lstat(path string, stat *Stat_t) (err error) 165 //sys Mkdir(path string, mode uint32) (err error) 166 //sys Mkfifo(path string, mode uint32) (err error) 167 //sys Mknod(path string, mode uint32, dev int) (err error) 168 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 169 //sys Open(path string, mode int, perm uint32) (fd int, err error) 170 //sys Pathconf(path string, name int) (val int, err error) 171 //sys read(fd int, p []byte) (n int, err error) 172 //sys Readlink(path string, buf []byte) (n int, err error) 173 //sys Rename(from string, to string) (err error) 174 //sys Revoke(path string) (err error) 175 //sys Rmdir(path string) (err error) 176 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 177 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 178 //sysnb Setegid(egid int) (err error) 179 //sysnb Seteuid(euid int) (err error) 180 //sysnb Setgid(gid int) (err error) 181 //sys Setlogin(name string) (err error) 182 //sysnb Setpgid(pid int, pgid int) (err error) 183 //sys Setpriority(which int, who int, prio int) (err error) 184 //sysnb Setregid(rgid int, egid int) (err error) 185 //sysnb Setreuid(ruid int, euid int) (err error) 186 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 187 //sysnb Setsid() (pid int, err error) 188 //sysnb Settimeofday(tp *Timeval) (err error) 189 //sysnb Setuid(uid int) (err error) 190 //sys Stat(path string, stat *Stat_t) (err error) 191 //sys Statfs(path string, stat *Statfs_t) (err error) 192 //sys Symlink(path string, link string) (err error) 193 //sys Sync() (err error) 194 //sys Truncate(path string, length int64) (err error) 195 //sys Umask(newmask int) (oldmask int) 196 //sys Undelete(path string) (err error) 197 //sys Unlink(path string) (err error) 198 //sys Unmount(path string, flags int) (err error) 199 //sys write(fd int, p []byte) (n int, err error) 200 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 201 //sys munmap(addr uintptr, length uintptr) (err error) 202 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 203 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 204 205 /* 206 * Unimplemented 207 * TODO(jsing): Update this list for DragonFly. 208 */ 209 // Profil 210 // Sigaction 211 // Sigprocmask 212 // Getlogin 213 // Sigpending 214 // Sigaltstack 215 // Ioctl 216 // Reboot 217 // Execve 218 // Vfork 219 // Sbrk 220 // Sstk 221 // Ovadvise 222 // Mincore 223 // Setitimer 224 // Swapon 225 // Select 226 // Sigsuspend 227 // Readv 228 // Writev 229 // Nfssvc 230 // Getfh 231 // Quotactl 232 // Mount 233 // Csops 234 // Waitid 235 // Add_profil 236 // Kdebug_trace 237 // Sigreturn 238 // Mmap 239 // Mlock 240 // Munlock 241 // Atsocket 242 // Kqueue_from_portset_np 243 // Kqueue_portset 244 // Getattrlist 245 // Setattrlist 246 // Getdirentriesattr 247 // Searchfs 248 // Delete 249 // Copyfile 250 // Poll 251 // Watchevent 252 // Waitevent 253 // Modwatch 254 // Getxattr 255 // Fgetxattr 256 // Setxattr 257 // Fsetxattr 258 // Removexattr 259 // Fremovexattr 260 // Listxattr 261 // Flistxattr 262 // Fsctl 263 // Initgroups 264 // Posix_spawn 265 // Nfsclnt 266 // Fhopen 267 // Minherit 268 // Semsys 269 // Msgsys 270 // Shmsys 271 // Semctl 272 // Semget 273 // Semop 274 // Msgctl 275 // Msgget 276 // Msgsnd 277 // Msgrcv 278 // Shmat 279 // Shmctl 280 // Shmdt 281 // Shmget 282 // Shm_open 283 // Shm_unlink 284 // Sem_open 285 // Sem_close 286 // Sem_unlink 287 // Sem_wait 288 // Sem_trywait 289 // Sem_post 290 // Sem_getvalue 291 // Sem_init 292 // Sem_destroy 293 // Open_extended 294 // Umask_extended 295 // Stat_extended 296 // Lstat_extended 297 // Fstat_extended 298 // Chmod_extended 299 // Fchmod_extended 300 // Access_extended 301 // Settid 302 // Gettid 303 // Setsgroups 304 // Getsgroups 305 // Setwgroups 306 // Getwgroups 307 // Mkfifo_extended 308 // Mkdir_extended 309 // Identitysvc 310 // Shared_region_check_np 311 // Shared_region_map_np 312 // __pthread_mutex_destroy 313 // __pthread_mutex_init 314 // __pthread_mutex_lock 315 // __pthread_mutex_trylock 316 // __pthread_mutex_unlock 317 // __pthread_cond_init 318 // __pthread_cond_destroy 319 // __pthread_cond_broadcast 320 // __pthread_cond_signal 321 // Setsid_with_pid 322 // __pthread_cond_timedwait 323 // Aio_fsync 324 // Aio_return 325 // Aio_suspend 326 // Aio_cancel 327 // Aio_error 328 // Aio_read 329 // Aio_write 330 // Lio_listio 331 // __pthread_cond_wait 332 // Iopolicysys 333 // Mlockall 334 // Munlockall 335 // __pthread_kill 336 // __pthread_sigmask 337 // __sigwait 338 // __disable_threadsignal 339 // __pthread_markcancel 340 // __pthread_canceled 341 // __semwait_signal 342 // Proc_info 343 // Stat64_extended 344 // Lstat64_extended 345 // Fstat64_extended 346 // __pthread_chdir 347 // __pthread_fchdir 348 // Audit 349 // Auditon 350 // Getauid 351 // Setauid 352 // Getaudit 353 // Setaudit 354 // Getaudit_addr 355 // Setaudit_addr 356 // Auditctl 357 // Bsdthread_create 358 // Bsdthread_terminate 359 // Stack_snapshot 360 // Bsdthread_register 361 // Workq_open 362 // Workq_ops 363 // __mac_execve 364 // __mac_syscall 365 // __mac_get_file 366 // __mac_set_file 367 // __mac_get_link 368 // __mac_set_link 369 // __mac_get_proc 370 // __mac_set_proc 371 // __mac_get_fd 372 // __mac_set_fd 373 // __mac_get_pid 374 // __mac_get_lcid 375 // __mac_get_lctx 376 // __mac_set_lctx 377 // Setlcid 378 // Read_nocancel 379 // Write_nocancel 380 // Open_nocancel 381 // Close_nocancel 382 // Wait4_nocancel 383 // Recvmsg_nocancel 384 // Sendmsg_nocancel 385 // Recvfrom_nocancel 386 // Accept_nocancel 387 // Msync_nocancel 388 // Fcntl_nocancel 389 // Select_nocancel 390 // Fsync_nocancel 391 // Connect_nocancel 392 // Sigsuspend_nocancel 393 // Readv_nocancel 394 // Writev_nocancel 395 // Sendto_nocancel 396 // Pread_nocancel 397 // Pwrite_nocancel 398 // Waitid_nocancel 399 // Poll_nocancel 400 // Msgsnd_nocancel 401 // Msgrcv_nocancel 402 // Sem_wait_nocancel 403 // Aio_suspend_nocancel 404 // __sigwait_nocancel 405 // __semwait_signal_nocancel 406 // __mac_mount 407 // __mac_get_mount 408 // __mac_getfsstat 409
