github.com/juelite/golang.org-x-sys@v0.0.0-20181121071242-7b69e1c5db33/unix/syscall_dragonfly.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 unix 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 use(unsafe.Pointer(_p0)) 113 n = int(r0) 114 if e1 != 0 { 115 err = e1 116 } 117 return 118 } 119 120 /* 121 * Exposed directly 122 */ 123 //sys Access(path string, mode uint32) (err error) 124 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 125 //sys Chdir(path string) (err error) 126 //sys Chflags(path string, flags int) (err error) 127 //sys Chmod(path string, mode uint32) (err error) 128 //sys Chown(path string, uid int, gid int) (err error) 129 //sys Chroot(path string) (err error) 130 //sys Close(fd int) (err error) 131 //sys Dup(fd int) (nfd int, err error) 132 //sys Dup2(from int, to int) (err error) 133 //sys Exit(code int) 134 //sys Fchdir(fd int) (err error) 135 //sys Fchflags(fd int, flags int) (err error) 136 //sys Fchmod(fd int, mode uint32) (err error) 137 //sys Fchown(fd int, uid int, gid int) (err error) 138 //sys Flock(fd int, how int) (err error) 139 //sys Fpathconf(fd int, name int) (val int, err error) 140 //sys Fstat(fd int, stat *Stat_t) (err error) 141 //sys Fstatfs(fd int, stat *Statfs_t) (err error) 142 //sys Fsync(fd int) (err error) 143 //sys Ftruncate(fd int, length int64) (err error) 144 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 145 //sys Getdtablesize() (size int) 146 //sysnb Getegid() (egid int) 147 //sysnb Geteuid() (uid int) 148 //sysnb Getgid() (gid int) 149 //sysnb Getpgid(pid int) (pgid int, err error) 150 //sysnb Getpgrp() (pgrp int) 151 //sysnb Getpid() (pid int) 152 //sysnb Getppid() (ppid int) 153 //sys Getpriority(which int, who int) (prio int, err error) 154 //sysnb Getrlimit(which int, lim *Rlimit) (err error) 155 //sysnb Getrusage(who int, rusage *Rusage) (err error) 156 //sysnb Getsid(pid int) (sid int, err error) 157 //sysnb Gettimeofday(tv *Timeval) (err error) 158 //sysnb Getuid() (uid int) 159 //sys Issetugid() (tainted bool) 160 //sys Kill(pid int, signum syscall.Signal) (err error) 161 //sys Kqueue() (fd int, err error) 162 //sys Lchown(path string, uid int, gid int) (err error) 163 //sys Link(path string, link string) (err error) 164 //sys Listen(s int, backlog int) (err error) 165 //sys Lstat(path string, stat *Stat_t) (err error) 166 //sys Mkdir(path string, mode uint32) (err error) 167 //sys Mkfifo(path string, mode uint32) (err error) 168 //sys Mknod(path string, mode uint32, dev int) (err error) 169 //sys Mlock(b []byte) (err error) 170 //sys Mlockall(flags int) (err error) 171 //sys Mprotect(b []byte, prot int) (err error) 172 //sys Munlock(b []byte) (err error) 173 //sys Munlockall() (err error) 174 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 175 //sys Open(path string, mode int, perm uint32) (fd int, err error) 176 //sys Pathconf(path string, name int) (val int, err error) 177 //sys read(fd int, p []byte) (n int, err error) 178 //sys Readlink(path string, buf []byte) (n int, err error) 179 //sys Rename(from string, to string) (err error) 180 //sys Revoke(path string) (err error) 181 //sys Rmdir(path string) (err error) 182 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 183 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 184 //sysnb Setegid(egid int) (err error) 185 //sysnb Seteuid(euid int) (err error) 186 //sysnb Setgid(gid int) (err error) 187 //sys Setlogin(name string) (err error) 188 //sysnb Setpgid(pid int, pgid int) (err error) 189 //sys Setpriority(which int, who int, prio int) (err error) 190 //sysnb Setregid(rgid int, egid int) (err error) 191 //sysnb Setreuid(ruid int, euid int) (err error) 192 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) 193 //sysnb Setresuid(ruid int, euid int, suid int) (err error) 194 //sysnb Setrlimit(which int, lim *Rlimit) (err error) 195 //sysnb Setsid() (pid int, err error) 196 //sysnb Settimeofday(tp *Timeval) (err error) 197 //sysnb Setuid(uid int) (err error) 198 //sys Stat(path string, stat *Stat_t) (err error) 199 //sys Statfs(path string, stat *Statfs_t) (err error) 200 //sys Symlink(path string, link string) (err error) 201 //sys Sync() (err error) 202 //sys Truncate(path string, length int64) (err error) 203 //sys Umask(newmask int) (oldmask int) 204 //sys Undelete(path string) (err error) 205 //sys Unlink(path string) (err error) 206 //sys Unmount(path string, flags int) (err error) 207 //sys write(fd int, p []byte) (n int, err error) 208 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 209 //sys munmap(addr uintptr, length uintptr) (err error) 210 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 211 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 212 213 /* 214 * Unimplemented 215 * TODO(jsing): Update this list for DragonFly. 216 */ 217 // Profil 218 // Sigaction 219 // Sigprocmask 220 // Getlogin 221 // Sigpending 222 // Sigaltstack 223 // Ioctl 224 // Reboot 225 // Execve 226 // Vfork 227 // Sbrk 228 // Sstk 229 // Ovadvise 230 // Mincore 231 // Setitimer 232 // Swapon 233 // Select 234 // Sigsuspend 235 // Readv 236 // Writev 237 // Nfssvc 238 // Getfh 239 // Quotactl 240 // Mount 241 // Csops 242 // Waitid 243 // Add_profil 244 // Kdebug_trace 245 // Sigreturn 246 // Mmap 247 // Atsocket 248 // Kqueue_from_portset_np 249 // Kqueue_portset 250 // Getattrlist 251 // Setattrlist 252 // Getdirentriesattr 253 // Searchfs 254 // Delete 255 // Copyfile 256 // Poll 257 // Watchevent 258 // Waitevent 259 // Modwatch 260 // Getxattr 261 // Fgetxattr 262 // Setxattr 263 // Fsetxattr 264 // Removexattr 265 // Fremovexattr 266 // Listxattr 267 // Flistxattr 268 // Fsctl 269 // Initgroups 270 // Posix_spawn 271 // Nfsclnt 272 // Fhopen 273 // Minherit 274 // Semsys 275 // Msgsys 276 // Shmsys 277 // Semctl 278 // Semget 279 // Semop 280 // Msgctl 281 // Msgget 282 // Msgsnd 283 // Msgrcv 284 // Shmat 285 // Shmctl 286 // Shmdt 287 // Shmget 288 // Shm_open 289 // Shm_unlink 290 // Sem_open 291 // Sem_close 292 // Sem_unlink 293 // Sem_wait 294 // Sem_trywait 295 // Sem_post 296 // Sem_getvalue 297 // Sem_init 298 // Sem_destroy 299 // Open_extended 300 // Umask_extended 301 // Stat_extended 302 // Lstat_extended 303 // Fstat_extended 304 // Chmod_extended 305 // Fchmod_extended 306 // Access_extended 307 // Settid 308 // Gettid 309 // Setsgroups 310 // Getsgroups 311 // Setwgroups 312 // Getwgroups 313 // Mkfifo_extended 314 // Mkdir_extended 315 // Identitysvc 316 // Shared_region_check_np 317 // Shared_region_map_np 318 // __pthread_mutex_destroy 319 // __pthread_mutex_init 320 // __pthread_mutex_lock 321 // __pthread_mutex_trylock 322 // __pthread_mutex_unlock 323 // __pthread_cond_init 324 // __pthread_cond_destroy 325 // __pthread_cond_broadcast 326 // __pthread_cond_signal 327 // Setsid_with_pid 328 // __pthread_cond_timedwait 329 // Aio_fsync 330 // Aio_return 331 // Aio_suspend 332 // Aio_cancel 333 // Aio_error 334 // Aio_read 335 // Aio_write 336 // Lio_listio 337 // __pthread_cond_wait 338 // Iopolicysys 339 // __pthread_kill 340 // __pthread_sigmask 341 // __sigwait 342 // __disable_threadsignal 343 // __pthread_markcancel 344 // __pthread_canceled 345 // __semwait_signal 346 // Proc_info 347 // Stat64_extended 348 // Lstat64_extended 349 // Fstat64_extended 350 // __pthread_chdir 351 // __pthread_fchdir 352 // Audit 353 // Auditon 354 // Getauid 355 // Setauid 356 // Getaudit 357 // Setaudit 358 // Getaudit_addr 359 // Setaudit_addr 360 // Auditctl 361 // Bsdthread_create 362 // Bsdthread_terminate 363 // Stack_snapshot 364 // Bsdthread_register 365 // Workq_open 366 // Workq_ops 367 // __mac_execve 368 // __mac_syscall 369 // __mac_get_file 370 // __mac_set_file 371 // __mac_get_link 372 // __mac_set_link 373 // __mac_get_proc 374 // __mac_set_proc 375 // __mac_get_fd 376 // __mac_set_fd 377 // __mac_get_pid 378 // __mac_get_lcid 379 // __mac_get_lctx 380 // __mac_set_lctx 381 // Setlcid 382 // Read_nocancel 383 // Write_nocancel 384 // Open_nocancel 385 // Close_nocancel 386 // Wait4_nocancel 387 // Recvmsg_nocancel 388 // Sendmsg_nocancel 389 // Recvfrom_nocancel 390 // Accept_nocancel 391 // Msync_nocancel 392 // Fcntl_nocancel 393 // Select_nocancel 394 // Fsync_nocancel 395 // Connect_nocancel 396 // Sigsuspend_nocancel 397 // Readv_nocancel 398 // Writev_nocancel 399 // Sendto_nocancel 400 // Pread_nocancel 401 // Pwrite_nocancel 402 // Waitid_nocancel 403 // Poll_nocancel 404 // Msgsnd_nocancel 405 // Msgrcv_nocancel 406 // Sem_wait_nocancel 407 // Aio_suspend_nocancel 408 // __sigwait_nocancel 409 // __semwait_signal_nocancel 410 // __mac_mount 411 // __mac_get_mount 412 // __mac_getfsstat