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 ( 16 "sync" 17 "unsafe" 18) 19 20// See version list in https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/sys/param.h 21var ( 22 osreldateOnce sync.Once 23 osreldate uint32 24) 25 26// First __DragonFly_version after September 2019 ABI changes 27// http://lists.dragonflybsd.org/pipermail/users/2019-September/358280.html 28const _dragonflyABIChangeVersion = 500705 29 30func supportsABI(ver uint32) bool { 31 osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") }) 32 return osreldate >= ver 33} 34 35// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets. 36type SockaddrDatalink struct { 37 Len uint8 38 Family uint8 39 Index uint16 40 Type uint8 41 Nlen uint8 42 Alen uint8 43 Slen uint8 44 Data [12]int8 45 Rcf uint16 46 Route [16]uint16 47 raw RawSockaddrDatalink 48} 49 50func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { 51 return nil, EAFNOSUPPORT 52} 53 54// Translate "kern.hostname" to []_C_int{0,1,2,3}. 55func nametomib(name string) (mib []_C_int, err error) { 56 const siz = unsafe.Sizeof(mib[0]) 57 58 // NOTE(rsc): It seems strange to set the buffer to have 59 // size CTL_MAXNAME+2 but use only CTL_MAXNAME 60 // as the size. I don't know why the +2 is here, but the 61 // kernel uses +2 for its own implementation of this function. 62 // I am scared that if we don't include the +2 here, the kernel 63 // will silently write 2 words farther than we specify 64 // and we'll get memory corruption. 65 var buf [CTL_MAXNAME + 2]_C_int 66 n := uintptr(CTL_MAXNAME) * siz 67 68 p := (*byte)(unsafe.Pointer(&buf[0])) 69 bytes, err := ByteSliceFromString(name) 70 if err != nil { 71 return nil, err 72 } 73 74 // Magic sysctl: "setting" 0.3 to a string name 75 // lets you read back the array of integers form. 76 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { 77 return nil, err 78 } 79 return buf[0 : n/siz], nil 80} 81 82func direntIno(buf []byte) (uint64, bool) { 83 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) 84} 85 86func direntReclen(buf []byte) (uint64, bool) { 87 namlen, ok := direntNamlen(buf) 88 if !ok { 89 return 0, false 90 } 91 return (16 + namlen + 1 + 7) &^ 7, true 92} 93 94func direntNamlen(buf []byte) (uint64, bool) { 95 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) 96} 97 98//sysnb pipe() (r int, w int, err error) 99 100func Pipe(p []int) (err error) { 101 if len(p) != 2 { 102 return EINVAL 103 } 104 p[0], p[1], err = pipe() 105 return 106} 107 108//sysnb pipe2(p *[2]_C_int, flags int) (r int, w int, err error) 109 110func Pipe2(p []int, flags int) (err error) { 111 if len(p) != 2 { 112 return EINVAL 113 } 114 var pp [2]_C_int 115 // pipe2 on dragonfly takes an fds array as an argument, but still 116 // returns the file descriptors. 117 p[0], p[1], err = pipe2(&pp, flags) 118 return err 119} 120 121//sys extpread(fd int, p []byte, flags int, offset int64) (n int, err error) 122func Pread(fd int, p []byte, offset int64) (n int, err error) { 123 return extpread(fd, p, 0, offset) 124} 125 126//sys extpwrite(fd int, p []byte, flags int, offset int64) (n int, err error) 127func Pwrite(fd int, p []byte, offset int64) (n int, err error) { 128 return extpwrite(fd, p, 0, offset) 129} 130 131func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { 132 var rsa RawSockaddrAny 133 var len _Socklen = SizeofSockaddrAny 134 nfd, err = accept4(fd, &rsa, &len, flags) 135 if err != nil { 136 return 137 } 138 if len > SizeofSockaddrAny { 139 panic("RawSockaddrAny too small") 140 } 141 sa, err = anyToSockaddr(fd, &rsa) 142 if err != nil { 143 Close(nfd) 144 nfd = 0 145 } 146 return 147} 148 149//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD 150 151func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { 152 var _p0 unsafe.Pointer 153 var bufsize uintptr 154 if len(buf) > 0 { 155 _p0 = unsafe.Pointer(&buf[0]) 156 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) 157 } 158 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) 159 n = int(r0) 160 if e1 != 0 { 161 err = e1 162 } 163 return 164} 165 166func setattrlistTimes(path string, times []Timespec, flags int) error { 167 // used on Darwin for UtimesNano 168 return ENOSYS 169} 170 171//sys ioctl(fd int, req uint, arg uintptr) (err error) 172 173//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL 174 175func sysctlUname(mib []_C_int, old *byte, oldlen *uintptr) error { 176 err := sysctl(mib, old, oldlen, nil, 0) 177 if err != nil { 178 // Utsname members on Dragonfly are only 32 bytes and 179 // the syscall returns ENOMEM in case the actual value 180 // is longer. 181 if err == ENOMEM { 182 err = nil 183 } 184 } 185 return err 186} 187 188func Uname(uname *Utsname) error { 189 mib := []_C_int{CTL_KERN, KERN_OSTYPE} 190 n := unsafe.Sizeof(uname.Sysname) 191 if err := sysctlUname(mib, &uname.Sysname[0], &n); err != nil { 192 return err 193 } 194 uname.Sysname[unsafe.Sizeof(uname.Sysname)-1] = 0 195 196 mib = []_C_int{CTL_KERN, KERN_HOSTNAME} 197 n = unsafe.Sizeof(uname.Nodename) 198 if err := sysctlUname(mib, &uname.Nodename[0], &n); err != nil { 199 return err 200 } 201 uname.Nodename[unsafe.Sizeof(uname.Nodename)-1] = 0 202 203 mib = []_C_int{CTL_KERN, KERN_OSRELEASE} 204 n = unsafe.Sizeof(uname.Release) 205 if err := sysctlUname(mib, &uname.Release[0], &n); err != nil { 206 return err 207 } 208 uname.Release[unsafe.Sizeof(uname.Release)-1] = 0 209 210 mib = []_C_int{CTL_KERN, KERN_VERSION} 211 n = unsafe.Sizeof(uname.Version) 212 if err := sysctlUname(mib, &uname.Version[0], &n); err != nil { 213 return err 214 } 215 216 // The version might have newlines or tabs in it, convert them to 217 // spaces. 218 for i, b := range uname.Version { 219 if b == '\n' || b == '\t' { 220 if i == len(uname.Version)-1 { 221 uname.Version[i] = 0 222 } else { 223 uname.Version[i] = ' ' 224 } 225 } 226 } 227 228 mib = []_C_int{CTL_HW, HW_MACHINE} 229 n = unsafe.Sizeof(uname.Machine) 230 if err := sysctlUname(mib, &uname.Machine[0], &n); err != nil { 231 return err 232 } 233 uname.Machine[unsafe.Sizeof(uname.Machine)-1] = 0 234 235 return nil 236} 237 238func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { 239 if raceenabled { 240 raceReleaseMerge(unsafe.Pointer(&ioSync)) 241 } 242 return sendfile(outfd, infd, offset, count) 243} 244 245/* 246 * Exposed directly 247 */ 248//sys Access(path string, mode uint32) (err error) 249//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) 250//sys Chdir(path string) (err error) 251//sys Chflags(path string, flags int) (err error) 252//sys Chmod(path string, mode uint32) (err error) 253//sys Chown(path string, uid int, gid int) (err error) 254//sys Chroot(path string) (err error) 255//sys Close(fd int) (err error) 256//sys Dup(fd int) (nfd int, err error) 257//sys Dup2(from int, to int) (err error) 258//sys Exit(code int) 259//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) 260//sys Fchdir(fd int) (err error) 261//sys Fchflags(fd int, flags int) (err error) 262//sys Fchmod(fd int, mode uint32) (err error) 263//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) 264//sys Fchown(fd int, uid int, gid int) (err error) 265//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) 266//sys Flock(fd int, how int) (err error) 267//sys Fpathconf(fd int, name int) (val int, err error) 268//sys Fstat(fd int, stat *Stat_t) (err error) 269//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) 270//sys Fstatfs(fd int, stat *Statfs_t) (err error) 271//sys Fsync(fd int) (err error) 272//sys Ftruncate(fd int, length int64) (err error) 273//sys Getdents(fd int, buf []byte) (n int, err error) 274//sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) 275//sys Getdtablesize() (size int) 276//sysnb Getegid() (egid int) 277//sysnb Geteuid() (uid int) 278//sysnb Getgid() (gid int) 279//sysnb Getpgid(pid int) (pgid int, err error) 280//sysnb Getpgrp() (pgrp int) 281//sysnb Getpid() (pid int) 282//sysnb Getppid() (ppid int) 283//sys Getpriority(which int, who int) (prio int, err error) 284//sysnb Getrlimit(which int, lim *Rlimit) (err error) 285//sysnb Getrusage(who int, rusage *Rusage) (err error) 286//sysnb Getsid(pid int) (sid int, err error) 287//sysnb Gettimeofday(tv *Timeval) (err error) 288//sysnb Getuid() (uid int) 289//sys Issetugid() (tainted bool) 290//sys Kill(pid int, signum syscall.Signal) (err error) 291//sys Kqueue() (fd int, err error) 292//sys Lchown(path string, uid int, gid int) (err error) 293//sys Link(path string, link string) (err error) 294//sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error) 295//sys Listen(s int, backlog int) (err error) 296//sys Lstat(path string, stat *Stat_t) (err error) 297//sys Mkdir(path string, mode uint32) (err error) 298//sys Mkdirat(dirfd int, path string, mode uint32) (err error) 299//sys Mkfifo(path string, mode uint32) (err error) 300//sys Mknod(path string, mode uint32, dev int) (err error) 301//sys Mknodat(fd int, path string, mode uint32, dev int) (err error) 302//sys Nanosleep(time *Timespec, leftover *Timespec) (err error) 303//sys Open(path string, mode int, perm uint32) (fd int, err error) 304//sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error) 305//sys Pathconf(path string, name int) (val int, err error) 306//sys read(fd int, p []byte) (n int, err error) 307//sys Readlink(path string, buf []byte) (n int, err error) 308//sys Rename(from string, to string) (err error) 309//sys Renameat(fromfd int, from string, tofd int, to string) (err error) 310//sys Revoke(path string) (err error) 311//sys Rmdir(path string) (err error) 312//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK 313//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) 314//sysnb Setegid(egid int) (err error) 315//sysnb Seteuid(euid int) (err error) 316//sysnb Setgid(gid int) (err error) 317//sys Setlogin(name string) (err error) 318//sysnb Setpgid(pid int, pgid int) (err error) 319//sys Setpriority(which int, who int, prio int) (err error) 320//sysnb Setregid(rgid int, egid int) (err error) 321//sysnb Setreuid(ruid int, euid int) (err error) 322//sysnb Setresgid(rgid int, egid int, sgid int) (err error) 323//sysnb Setresuid(ruid int, euid int, suid int) (err error) 324//sysnb Setrlimit(which int, lim *Rlimit) (err error) 325//sysnb Setsid() (pid int, err error) 326//sysnb Settimeofday(tp *Timeval) (err error) 327//sysnb Setuid(uid int) (err error) 328//sys Stat(path string, stat *Stat_t) (err error) 329//sys Statfs(path string, stat *Statfs_t) (err error) 330//sys Symlink(path string, link string) (err error) 331//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error) 332//sys Sync() (err error) 333//sys Truncate(path string, length int64) (err error) 334//sys Umask(newmask int) (oldmask int) 335//sys Undelete(path string) (err error) 336//sys Unlink(path string) (err error) 337//sys Unlinkat(dirfd int, path string, flags int) (err error) 338//sys Unmount(path string, flags int) (err error) 339//sys write(fd int, p []byte) (n int, err error) 340//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) 341//sys munmap(addr uintptr, length uintptr) (err error) 342//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ 343//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE 344//sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error) 345//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error) 346 347/* 348 * Unimplemented 349 * TODO(jsing): Update this list for DragonFly. 350 */ 351// Profil 352// Sigaction 353// Sigprocmask 354// Getlogin 355// Sigpending 356// Sigaltstack 357// Reboot 358// Execve 359// Vfork 360// Sbrk 361// Sstk 362// Ovadvise 363// Mincore 364// Setitimer 365// Swapon 366// Select 367// Sigsuspend 368// Readv 369// Writev 370// Nfssvc 371// Getfh 372// Quotactl 373// Mount 374// Csops 375// Waitid 376// Add_profil 377// Kdebug_trace 378// Sigreturn 379// Atsocket 380// Kqueue_from_portset_np 381// Kqueue_portset 382// Getattrlist 383// Setattrlist 384// Getdirentriesattr 385// Searchfs 386// Delete 387// Copyfile 388// Watchevent 389// Waitevent 390// Modwatch 391// Getxattr 392// Fgetxattr 393// Setxattr 394// Fsetxattr 395// Removexattr 396// Fremovexattr 397// Listxattr 398// Flistxattr 399// Fsctl 400// Initgroups 401// Posix_spawn 402// Nfsclnt 403// Fhopen 404// Minherit 405// Semsys 406// Msgsys 407// Shmsys 408// Semctl 409// Semget 410// Semop 411// Msgctl 412// Msgget 413// Msgsnd 414// Msgrcv 415// Shmat 416// Shmctl 417// Shmdt 418// Shmget 419// Shm_open 420// Shm_unlink 421// Sem_open 422// Sem_close 423// Sem_unlink 424// Sem_wait 425// Sem_trywait 426// Sem_post 427// Sem_getvalue 428// Sem_init 429// Sem_destroy 430// Open_extended 431// Umask_extended 432// Stat_extended 433// Lstat_extended 434// Fstat_extended 435// Chmod_extended 436// Fchmod_extended 437// Access_extended 438// Settid 439// Gettid 440// Setsgroups 441// Getsgroups 442// Setwgroups 443// Getwgroups 444// Mkfifo_extended 445// Mkdir_extended 446// Identitysvc 447// Shared_region_check_np 448// Shared_region_map_np 449// __pthread_mutex_destroy 450// __pthread_mutex_init 451// __pthread_mutex_lock 452// __pthread_mutex_trylock 453// __pthread_mutex_unlock 454// __pthread_cond_init 455// __pthread_cond_destroy 456// __pthread_cond_broadcast 457// __pthread_cond_signal 458// Setsid_with_pid 459// __pthread_cond_timedwait 460// Aio_fsync 461// Aio_return 462// Aio_suspend 463// Aio_cancel 464// Aio_error 465// Aio_read 466// Aio_write 467// Lio_listio 468// __pthread_cond_wait 469// Iopolicysys 470// __pthread_kill 471// __pthread_sigmask 472// __sigwait 473// __disable_threadsignal 474// __pthread_markcancel 475// __pthread_canceled 476// __semwait_signal 477// Proc_info 478// Stat64_extended 479// Lstat64_extended 480// Fstat64_extended 481// __pthread_chdir 482// __pthread_fchdir 483// Audit 484// Auditon 485// Getauid 486// Setauid 487// Getaudit 488// Setaudit 489// Getaudit_addr 490// Setaudit_addr 491// Auditctl 492// Bsdthread_create 493// Bsdthread_terminate 494// Stack_snapshot 495// Bsdthread_register 496// Workq_open 497// Workq_ops 498// __mac_execve 499// __mac_syscall 500// __mac_get_file 501// __mac_set_file 502// __mac_get_link 503// __mac_set_link 504// __mac_get_proc 505// __mac_set_proc 506// __mac_get_fd 507// __mac_set_fd 508// __mac_get_pid 509// __mac_get_lcid 510// __mac_get_lctx 511// __mac_set_lctx 512// Setlcid 513// Read_nocancel 514// Write_nocancel 515// Open_nocancel 516// Close_nocancel 517// Wait4_nocancel 518// Recvmsg_nocancel 519// Sendmsg_nocancel 520// Recvfrom_nocancel 521// Accept_nocancel 522// Fcntl_nocancel 523// Select_nocancel 524// Fsync_nocancel 525// Connect_nocancel 526// Sigsuspend_nocancel 527// Readv_nocancel 528// Writev_nocancel 529// Sendto_nocancel 530// Pread_nocancel 531// Pwrite_nocancel 532// Waitid_nocancel 533// Msgsnd_nocancel 534// Msgrcv_nocancel 535// Sem_wait_nocancel 536// Aio_suspend_nocancel 537// __sigwait_nocancel 538// __semwait_signal_nocancel 539// __mac_mount 540// __mac_get_mount 541// __mac_getfsstat 542