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 13package unix 14 15import "unsafe" 16 17// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets. 18type SockaddrDatalink struct { 19 Len uint8 20 Family uint8 21 Index uint16 22 Type uint8 23 Nlen uint8 24 Alen uint8 25 Slen uint8 26 Data [12]int8 27 Rcf uint16 28 Route [16]uint16 29 raw RawSockaddrDatalink 30} 31 32// Translate "kern.hostname" to []_C_int{0,1,2,3}. 33func nametomib(name string) (mib []_C_int, err error) { 34 const siz = unsafe.Sizeof(mib[0]) 35 36 // NOTE(rsc): It seems strange to set the buffer to have 37 // size CTL_MAXNAME+2 but use only CTL_MAXNAME 38 // as the size. I don't know why the +2 is here, but the 39 // kernel uses +2 for its own implementation of this function. 40 // I am scared that if we don't include the +2 here, the kernel 41 // will silently write 2 words farther than we specify 42 // and we'll get memory corruption. 43 var buf [CTL_MAXNAME + 2]_C_int 44 n := uintptr(CTL_MAXNAME) * siz 45 46 p := (*byte)(unsafe.Pointer(&buf[0])) 47 bytes, err := ByteSliceFromString(name) 48 if err != nil { 49 return nil, err 50 } 51 52 // Magic sysctl: "setting" 0.3 to a string name 53 // lets you read back the array of integers form. 54 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { 55 return nil, err 56 } 57 return buf[0 : n/siz], nil 58} 59 60//sysnb pipe() (r int, w int, err error) 61 62func Pipe(p []int) (err error) { 63 if len(p) != 2 { 64 return EINVAL 65 } 66 p[0], p[1], err = pipe() 67 return 68} 69 70//sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error) 71func Pread(fd int, p []byte, offset int64) (n int, err error) { 72 return extpread(fd, p, 0, offset) 73} 74 75//sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error) 76func Pwrite(fd int, p []byte, offset int64) (n int, err error) { 77 return extpwrite(fd, p, 0, offset) 78} 79 80func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 81 var rsa RawSockaddrAny 82 var len _Socklen = SizeofSockaddrAny 83 nfd, err = accept4(fd, &rsa, &len, flags) 84 if err != nil { 85 return 86 } 87 if len > SizeofSockaddrAny { 88 panic("RawSockaddrAny too small") 89 } 90 sa, err = anyToSockaddr(&rsa) 91 if err != nil { 92 Close(nfd) 93 nfd = 0 94 } 95 return 96} 97 98const ImplementsGetwd = true 99 100//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD 101 102func Getwd() (string, error) { 103 var buf [PathMax]byte 104 _, err := Getcwd(buf[0:]) 105 if err != nil { 106 return "", err 107 } 108 n := clen(buf[:]) 109 if n < 1 { 110 return "", EINVAL 111 } 112 return string(buf[:n]), nil 113} 114 115func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 116 var _p0 unsafe.Pointer 117 var bufsize uintptr 118 if len(buf) > 0 { 119 _p0 = unsafe.Pointer(&buf[0]) 120 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 121 } 122 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 123 n = int(r0) 124 if e1 != 0 { 125 err = e1 126 } 127 return 128} 129 130func setattrlistTimes(path string, times []Timespec, flags int) error { 131 // used on Darwin for UtimesNano 132 return ENOSYS 133} 134 135//sys ioctl(fd int, req uint, arg uintptr) (err error) 136 137// ioctl itself should not be exposed directly, but additional get/set 138// functions for specific types are permissible. 139 140// IoctlSetInt performs an ioctl operation which sets an integer value 141// on fd, using the specified request number. 142func IoctlSetInt(fd int, req uint, value int) error { 143 return ioctl(fd, req, uintptr(value)) 144} 145 146func IoctlSetWinsize(fd int, req uint, value *Winsize) error { 147 return ioctl(fd, req, uintptr(unsafe.Pointer(value))) 148} 149 150func IoctlSetTermios(fd int, req uint, value *Termios) error { 151 return ioctl(fd, req, uintptr(unsafe.Pointer(value))) 152} 153 154// IoctlGetInt performs an ioctl operation which gets an integer value 155// from fd, using the specified request number. 156func IoctlGetInt(fd int, req uint) (int, error) { 157 var value int 158 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 159 return value, err 160} 161 162func IoctlGetWinsize(fd int, req uint) (*Winsize, error) { 163 var value Winsize 164 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 165 return &value, err 166} 167 168func IoctlGetTermios(fd int, req uint) (*Termios, error) { 169 var value Termios 170 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) 171 return &value, err 172} 173 174func sysctlUname(mib []_C_int, old *byte, oldlen *uintptr) error { 175 err := sysctl(mib, old, oldlen, nil, 0) 176 if err != nil { 177 // Utsname members on Dragonfly are only 32 bytes and 178 // the syscall returns ENOMEM in case the actual value 179 // is longer. 180 if err == ENOMEM { 181 err = nil 182 } 183 } 184 return err 185} 186 187func Uname(uname *Utsname) error { 188 mib := []_C_int{CTL_KERN, KERN_OSTYPE} 189 n := unsafe.Sizeof(uname.Sysname) 190 if err := sysctlUname(mib, &uname.Sysname[0], &n); err != nil { 191 return err 192 } 193 uname.Sysname[unsafe.Sizeof(uname.Sysname)-1] = 0 194 195 mib = []_C_int{CTL_KERN, KERN_HOSTNAME} 196 n = unsafe.Sizeof(uname.Nodename) 197 if err := sysctlUname(mib, &uname.Nodename[0], &n); err != nil { 198 return err 199 } 200 uname.Nodename[unsafe.Sizeof(uname.Nodename)-1] = 0 201 202 mib = []_C_int{CTL_KERN, KERN_OSRELEASE} 203 n = unsafe.Sizeof(uname.Release) 204 if err := sysctlUname(mib, &uname.Release[0], &n); err != nil { 205 return err 206 } 207 uname.Release[unsafe.Sizeof(uname.Release)-1] = 0 208 209 mib = []_C_int{CTL_KERN, KERN_VERSION} 210 n = unsafe.Sizeof(uname.Version) 211 if err := sysctlUname(mib, &uname.Version[0], &n); err != nil { 212 return err 213 } 214 215 // The version might have newlines or tabs in it, convert them to 216 // spaces. 217 for i, b := range uname.Version { 218 if b == '\n' || b == '\t' { 219 if i == len(uname.Version)-1 { 220 uname.Version[i] = 0 221 } else { 222 uname.Version[i] = ' ' 223 } 224 } 225 } 226 227 mib = []_C_int{CTL_HW, HW_MACHINE} 228 n = unsafe.Sizeof(uname.Machine) 229 if err := sysctlUname(mib, &uname.Machine[0], &n); err != nil { 230 return err 231 } 232 uname.Machine[unsafe.Sizeof(uname.Machine)-1] = 0 233 234 return nil 235} 236 237/* 238 * Exposed directly 239 */ 240//sys Access(path string, mode uint32) (err error) 241//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 242//sys Chdir(path string) (err error) 243//sys Chflags(path string, flags int) (err error) 244//sys Chmod(path string, mode uint32) (err error) 245//sys Chown(path string, uid int, gid int) (err error) 246//sys Chroot(path string) (err error) 247//sys Close(fd int) (err error) 248//sys Dup(fd int) (nfd int, err error) 249//sys Dup2(from int, to int) (err error) 250//sys Exit(code int) 251//sys Fchdir(fd int) (err error) 252//sys Fchflags(fd int, flags int) (err error) 253//sys Fchmod(fd int, mode uint32) (err error) 254//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) 255//sys Fchown(fd int, uid int, gid int) (err error) 256//sys Flock(fd int, how int) (err error) 257//sys Fpathconf(fd int, name int) (val int, err error) 258//sys Fstat(fd int, stat *Stat_t) (err error) 259//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 260//sys Fstatfs(fd int, stat *Statfs_t) (err error) 261//sys Fsync(fd int) (err error) 262//sys Ftruncate(fd int, length int64) (err error) 263//sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 264//sys Getdtablesize() (size int) 265//sysnb Getegid() (egid int) 266//sysnb Geteuid() (uid int) 267//sysnb Getgid() (gid int) 268//sysnb Getpgid(pid int) (pgid int, err error) 269//sysnb Getpgrp() (pgrp int) 270//sysnb Getpid() (pid int) 271//sysnb Getppid() (ppid int) 272//sys Getpriority(which int, who int) (prio int, err error) 273//sysnb Getrlimit(which int, lim *Rlimit) (err error) 274//sysnb Getrusage(who int, rusage *Rusage) (err error) 275//sysnb Getsid(pid int) (sid int, err error) 276//sysnb Gettimeofday(tv *Timeval) (err error) 277//sysnb Getuid() (uid int) 278//sys Issetugid() (tainted bool) 279//sys Kill(pid int, signum syscall.Signal) (err error) 280//sys Kqueue() (fd int, err error) 281//sys Lchown(path string, uid int, gid int) (err error) 282//sys Link(path string, link string) (err error) 283//sys Listen(s int, backlog int) (err error) 284//sys Lstat(path string, stat *Stat_t) (err error) 285//sys Mkdir(path string, mode uint32) (err error) 286//sys Mkfifo(path string, mode uint32) (err error) 287//sys Mknod(path string, mode uint32, dev int) (err error) 288//sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 289//sys Open(path string, mode int, perm uint32) (fd int, err error) 290//sys Pathconf(path string, name int) (val int, err error) 291//sys read(fd int, p []byte) (n int, err error) 292//sys Readlink(path string, buf []byte) (n int, err error) 293//sys Rename(from string, to string) (err error) 294//sys Revoke(path string) (err error) 295//sys Rmdir(path string) (err error) 296//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 297//sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) 298//sysnb Setegid(egid int) (err error) 299//sysnb Seteuid(euid int) (err error) 300//sysnb Setgid(gid int) (err error) 301//sys Setlogin(name string) (err error) 302//sysnb Setpgid(pid int, pgid int) (err error) 303//sys Setpriority(which int, who int, prio int) (err error) 304//sysnb Setregid(rgid int, egid int) (err error) 305//sysnb Setreuid(ruid int, euid int) (err error) 306//sysnb Setresgid(rgid int, egid int, sgid int) (err error) 307//sysnb Setresuid(ruid int, euid int, suid int) (err error) 308//sysnb Setrlimit(which int, lim *Rlimit) (err error) 309//sysnb Setsid() (pid int, err error) 310//sysnb Settimeofday(tp *Timeval) (err error) 311//sysnb Setuid(uid int) (err error) 312//sys Stat(path string, stat *Stat_t) (err error) 313//sys Statfs(path string, stat *Statfs_t) (err error) 314//sys Symlink(path string, link string) (err error) 315//sys Sync() (err error) 316//sys Truncate(path string, length int64) (err error) 317//sys Umask(newmask int) (oldmask int) 318//sys Undelete(path string) (err error) 319//sys Unlink(path string) (err error) 320//sys Unmount(path string, flags int) (err error) 321//sys write(fd int, p []byte) (n int, err error) 322//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 323//sys munmap(addr uintptr, length uintptr) (err error) 324//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 325//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 326//sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error) 327//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error) 328 329/* 330 * Unimplemented 331 * TODO(jsing): Update this list for DragonFly. 332 */ 333// Profil 334// Sigaction 335// Sigprocmask 336// Getlogin 337// Sigpending 338// Sigaltstack 339// Reboot 340// Execve 341// Vfork 342// Sbrk 343// Sstk 344// Ovadvise 345// Mincore 346// Setitimer 347// Swapon 348// Select 349// Sigsuspend 350// Readv 351// Writev 352// Nfssvc 353// Getfh 354// Quotactl 355// Mount 356// Csops 357// Waitid 358// Add_profil 359// Kdebug_trace 360// Sigreturn 361// Atsocket 362// Kqueue_from_portset_np 363// Kqueue_portset 364// Getattrlist 365// Setattrlist 366// Getdirentriesattr 367// Searchfs 368// Delete 369// Copyfile 370// Watchevent 371// Waitevent 372// Modwatch 373// Getxattr 374// Fgetxattr 375// Setxattr 376// Fsetxattr 377// Removexattr 378// Fremovexattr 379// Listxattr 380// Flistxattr 381// Fsctl 382// Initgroups 383// Posix_spawn 384// Nfsclnt 385// Fhopen 386// Minherit 387// Semsys 388// Msgsys 389// Shmsys 390// Semctl 391// Semget 392// Semop 393// Msgctl 394// Msgget 395// Msgsnd 396// Msgrcv 397// Shmat 398// Shmctl 399// Shmdt 400// Shmget 401// Shm_open 402// Shm_unlink 403// Sem_open 404// Sem_close 405// Sem_unlink 406// Sem_wait 407// Sem_trywait 408// Sem_post 409// Sem_getvalue 410// Sem_init 411// Sem_destroy 412// Open_extended 413// Umask_extended 414// Stat_extended 415// Lstat_extended 416// Fstat_extended 417// Chmod_extended 418// Fchmod_extended 419// Access_extended 420// Settid 421// Gettid 422// Setsgroups 423// Getsgroups 424// Setwgroups 425// Getwgroups 426// Mkfifo_extended 427// Mkdir_extended 428// Identitysvc 429// Shared_region_check_np 430// Shared_region_map_np 431// __pthread_mutex_destroy 432// __pthread_mutex_init 433// __pthread_mutex_lock 434// __pthread_mutex_trylock 435// __pthread_mutex_unlock 436// __pthread_cond_init 437// __pthread_cond_destroy 438// __pthread_cond_broadcast 439// __pthread_cond_signal 440// Setsid_with_pid 441// __pthread_cond_timedwait 442// Aio_fsync 443// Aio_return 444// Aio_suspend 445// Aio_cancel 446// Aio_error 447// Aio_read 448// Aio_write 449// Lio_listio 450// __pthread_cond_wait 451// Iopolicysys 452// __pthread_kill 453// __pthread_sigmask 454// __sigwait 455// __disable_threadsignal 456// __pthread_markcancel 457// __pthread_canceled 458// __semwait_signal 459// Proc_info 460// Stat64_extended 461// Lstat64_extended 462// Fstat64_extended 463// __pthread_chdir 464// __pthread_fchdir 465// Audit 466// Auditon 467// Getauid 468// Setauid 469// Getaudit 470// Setaudit 471// Getaudit_addr 472// Setaudit_addr 473// Auditctl 474// Bsdthread_create 475// Bsdthread_terminate 476// Stack_snapshot 477// Bsdthread_register 478// Workq_open 479// Workq_ops 480// __mac_execve 481// __mac_syscall 482// __mac_get_file 483// __mac_set_file 484// __mac_get_link 485// __mac_set_link 486// __mac_get_proc 487// __mac_set_proc 488// __mac_get_fd 489// __mac_set_fd 490// __mac_get_pid 491// __mac_get_lcid 492// __mac_get_lctx 493// __mac_set_lctx 494// Setlcid 495// Read_nocancel 496// Write_nocancel 497// Open_nocancel 498// Close_nocancel 499// Wait4_nocancel 500// Recvmsg_nocancel 501// Sendmsg_nocancel 502// Recvfrom_nocancel 503// Accept_nocancel 504// Fcntl_nocancel 505// Select_nocancel 506// Fsync_nocancel 507// Connect_nocancel 508// Sigsuspend_nocancel 509// Readv_nocancel 510// Writev_nocancel 511// Sendto_nocancel 512// Pread_nocancel 513// Pwrite_nocancel 514// Waitid_nocancel 515// Msgsnd_nocancel 516// Msgrcv_nocancel 517// Sem_wait_nocancel 518// Aio_suspend_nocancel 519// __sigwait_nocancel 520// __semwait_signal_nocancel 521// __mac_mount 522// __mac_get_mount 523// __mac_getfsstat 524