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// Copyright 2009,2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// FreeBSD system calls.
// This file is compiled as ordinary Go code,
// but it is also input to mksyscall,
// which parses the //sys lines and generates system call stubs.
// Note that sometimes we use a lowercase //sys name and wrap
// it in our own nicer implementation, either here or in
// syscall_bsd.go or syscall_unix.go.
package unix
import "unsafe"
type SockaddrDatalink struct { Len uint8 Family uint8 Index uint16 Type uint8 Nlen uint8 Alen uint8 Slen uint8 Data [46]int8 raw RawSockaddrDatalink }
// Translate "kern.hostname" to []_C_int{0,1,2,3}.
func nametomib(name string) (mib []_C_int, err error) { const siz = unsafe.Sizeof(mib[0])
// NOTE(rsc): It seems strange to set the buffer to have
// size CTL_MAXNAME+2 but use only CTL_MAXNAME
// as the size. I don't know why the +2 is here, but the
// kernel uses +2 for its own implementation of this function.
// I am scared that if we don't include the +2 here, the kernel
// will silently write 2 words farther than we specify
// and we'll get memory corruption.
var buf [CTL_MAXNAME + 2]_C_int n := uintptr(CTL_MAXNAME) * siz
p := (*byte)(unsafe.Pointer(&buf[0])) bytes, err := ByteSliceFromString(name) if err != nil { return nil, err }
// Magic sysctl: "setting" 0.3 to a string name
// lets you read back the array of integers form.
if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { return nil, err } return buf[0 : n/siz], nil }
func direntIno(buf []byte) (uint64, bool) { return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) }
func direntReclen(buf []byte) (uint64, bool) { return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen)) }
func direntNamlen(buf []byte) (uint64, bool) { return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) }
//sysnb pipe() (r int, w int, err error)
func Pipe(p []int) (err error) { if len(p) != 2 { return EINVAL } p[0], p[1], err = pipe() return }
func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) { var value IPMreqn vallen := _Socklen(SizeofIPMreqn) errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) return &value, errno }
func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) { return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq)) }
func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) { var rsa RawSockaddrAny var len _Socklen = SizeofSockaddrAny nfd, err = accept4(fd, &rsa, &len, flags) if err != nil { return } if len > SizeofSockaddrAny { panic("RawSockaddrAny too small") } sa, err = anyToSockaddr(&rsa) if err != nil { Close(nfd) nfd = 0 } return }
const ImplementsGetwd = true
//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
func Getwd() (string, error) { var buf [PathMax]byte _, err := Getcwd(buf[0:]) if err != nil { return "", err } n := clen(buf[:]) if n < 1 { return "", EINVAL } return string(buf[:n]), nil }
func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { var _p0 unsafe.Pointer var bufsize uintptr if len(buf) > 0 { _p0 = unsafe.Pointer(&buf[0]) bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) } r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags)) n = int(r0) if e1 != 0 { err = e1 } return }
func setattrlistTimes(path string, times []Timespec, flags int) error { // used on Darwin for UtimesNano
return ENOSYS }
// Derive extattr namespace and attribute name
func xattrnamespace(fullattr string) (ns int, attr string, err error) { s := -1 for idx, val := range fullattr { if val == '.' { s = idx break } }
if s == -1 { return -1, "", ENOATTR }
namespace := fullattr[0:s] attr = fullattr[s+1:]
switch namespace { case "user": return EXTATTR_NAMESPACE_USER, attr, nil case "system": return EXTATTR_NAMESPACE_SYSTEM, attr, nil default: return -1, "", ENOATTR } }
func initxattrdest(dest []byte, idx int) (d unsafe.Pointer) { if len(dest) > idx { return unsafe.Pointer(&dest[idx]) } else { return unsafe.Pointer(_zero) } }
// FreeBSD implements its own syscalls to handle extended attributes
func Getxattr(file string, attr string, dest []byte) (sz int, err error) { d := initxattrdest(dest, 0) destsize := len(dest)
nsid, a, err := xattrnamespace(attr) if err != nil { return -1, err }
return ExtattrGetFile(file, nsid, a, uintptr(d), destsize) }
func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) { d := initxattrdest(dest, 0) destsize := len(dest)
nsid, a, err := xattrnamespace(attr) if err != nil { return -1, err }
return ExtattrGetFd(fd, nsid, a, uintptr(d), destsize) }
func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) { d := initxattrdest(dest, 0) destsize := len(dest)
nsid, a, err := xattrnamespace(attr) if err != nil { return -1, err }
return ExtattrGetLink(link, nsid, a, uintptr(d), destsize) }
// flags are unused on FreeBSD
func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) { d := unsafe.Pointer(&data[0]) datasiz := len(data)
nsid, a, err := xattrnamespace(attr) if err != nil { return }
_, err = ExtattrSetFd(fd, nsid, a, uintptr(d), datasiz) return }
func Setxattr(file string, attr string, data []byte, flags int) (err error) { d := unsafe.Pointer(&data[0]) datasiz := len(data)
nsid, a, err := xattrnamespace(attr) if err != nil { return }
_, err = ExtattrSetFile(file, nsid, a, uintptr(d), datasiz) return }
func Lsetxattr(link string, attr string, data []byte, flags int) (err error) { d := unsafe.Pointer(&data[0]) datasiz := len(data)
nsid, a, err := xattrnamespace(attr) if err != nil { return }
_, err = ExtattrSetLink(link, nsid, a, uintptr(d), datasiz) return }
func Removexattr(file string, attr string) (err error) { nsid, a, err := xattrnamespace(attr) if err != nil { return }
err = ExtattrDeleteFile(file, nsid, a) return }
func Fremovexattr(fd int, attr string) (err error) { nsid, a, err := xattrnamespace(attr) if err != nil { return }
err = ExtattrDeleteFd(fd, nsid, a) return }
func Lremovexattr(link string, attr string) (err error) { nsid, a, err := xattrnamespace(attr) if err != nil { return }
err = ExtattrDeleteLink(link, nsid, a) return }
func Listxattr(file string, dest []byte) (sz int, err error) { d := initxattrdest(dest, 0) destsiz := len(dest)
// FreeBSD won't allow you to list xattrs from multiple namespaces
s := 0 for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} { stmp, e := ExtattrListFile(file, nsid, uintptr(d), destsiz)
/* Errors accessing system attrs are ignored so that * we can implement the Linux-like behavior of omitting errors that * we don't have read permissions on * * Linux will still error if we ask for user attributes on a file that * we don't have read permissions on, so don't ignore those errors */ if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER { continue } else if e != nil { return s, e }
s += stmp destsiz -= s if destsiz < 0 { destsiz = 0 } d = initxattrdest(dest, s) }
return s, nil }
func Flistxattr(fd int, dest []byte) (sz int, err error) { d := initxattrdest(dest, 0) destsiz := len(dest)
s := 0 for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} { stmp, e := ExtattrListFd(fd, nsid, uintptr(d), destsiz) if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER { continue } else if e != nil { return s, e }
s += stmp destsiz -= s if destsiz < 0 { destsiz = 0 } d = initxattrdest(dest, s) }
return s, nil }
func Llistxattr(link string, dest []byte) (sz int, err error) { d := initxattrdest(dest, 0) destsiz := len(dest)
s := 0 for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} { stmp, e := ExtattrListLink(link, nsid, uintptr(d), destsiz) if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER { continue } else if e != nil { return s, e }
s += stmp destsiz -= s if destsiz < 0 { destsiz = 0 } d = initxattrdest(dest, s) }
return s, nil }
//sys ioctl(fd int, req uint, arg uintptr) (err error)
// ioctl itself should not be exposed directly, but additional get/set
// functions for specific types are permissible.
// IoctlSetInt performs an ioctl operation which sets an integer value
// on fd, using the specified request number.
func IoctlSetInt(fd int, req uint, value int) error { return ioctl(fd, req, uintptr(value)) }
func IoctlSetWinsize(fd int, req uint, value *Winsize) error { return ioctl(fd, req, uintptr(unsafe.Pointer(value))) }
func IoctlSetTermios(fd int, req uint, value *Termios) error { return ioctl(fd, req, uintptr(unsafe.Pointer(value))) }
// IoctlGetInt performs an ioctl operation which gets an integer value
// from fd, using the specified request number.
func IoctlGetInt(fd int, req uint) (int, error) { var value int err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) return value, err }
func IoctlGetWinsize(fd int, req uint) (*Winsize, error) { var value Winsize err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) return &value, err }
func IoctlGetTermios(fd int, req uint) (*Termios, error) { var value Termios err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) return &value, err }
func Uname(uname *Utsname) error { mib := []_C_int{CTL_KERN, KERN_OSTYPE} n := unsafe.Sizeof(uname.Sysname) if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil { return err }
mib = []_C_int{CTL_KERN, KERN_HOSTNAME} n = unsafe.Sizeof(uname.Nodename) if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil { return err }
mib = []_C_int{CTL_KERN, KERN_OSRELEASE} n = unsafe.Sizeof(uname.Release) if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil { return err }
mib = []_C_int{CTL_KERN, KERN_VERSION} n = unsafe.Sizeof(uname.Version) if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil { return err }
// The version might have newlines or tabs in it, convert them to
// spaces.
for i, b := range uname.Version { if b == '\n' || b == '\t' { if i == len(uname.Version)-1 { uname.Version[i] = 0 } else { uname.Version[i] = ' ' } } }
mib = []_C_int{CTL_HW, HW_MACHINE} n = unsafe.Sizeof(uname.Machine) if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil { return err }
return nil }
/* * Exposed directly */ //sys Access(path string, mode uint32) (err error)
//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
//sys CapEnter() (err error)
//sys capRightsGet(version int, fd int, rightsp *CapRights) (err error) = SYS___CAP_RIGHTS_GET
//sys capRightsLimit(fd int, rightsp *CapRights) (err error)
//sys Chdir(path string) (err error)
//sys Chflags(path string, flags int) (err error)
//sys Chmod(path string, mode uint32) (err error)
//sys Chown(path string, uid int, gid int) (err error)
//sys Chroot(path string) (err error)
//sys Close(fd int) (err error)
//sys Dup(fd int) (nfd int, err error)
//sys Dup2(from int, to int) (err error)
//sys Exit(code int)
//sys ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
//sys ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
//sys ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
//sys ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
//sys ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
//sys Fchdir(fd int) (err error)
//sys Fchflags(fd int, flags int) (err error)
//sys Fchmod(fd int, mode uint32) (err error)
//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
//sys Flock(fd int, how int) (err error)
//sys Fpathconf(fd int, name int) (val int, err error)
//sys Fstat(fd int, stat *Stat_t) (err error)
//sys Fstatfs(fd int, stat *Statfs_t) (err error)
//sys Fsync(fd int) (err error)
//sys Ftruncate(fd int, length int64) (err error)
//sys Getdents(fd int, buf []byte) (n int, err error)
//sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
//sys Getdtablesize() (size int)
//sysnb Getegid() (egid int)
//sysnb Geteuid() (uid int)
//sysnb Getgid() (gid int)
//sysnb Getpgid(pid int) (pgid int, err error)
//sysnb Getpgrp() (pgrp int)
//sysnb Getpid() (pid int)
//sysnb Getppid() (ppid int)
//sys Getpriority(which int, who int) (prio int, err error)
//sysnb Getrlimit(which int, lim *Rlimit) (err error)
//sysnb Getrusage(who int, rusage *Rusage) (err error)
//sysnb Getsid(pid int) (sid int, err error)
//sysnb Gettimeofday(tv *Timeval) (err error)
//sysnb Getuid() (uid int)
//sys Issetugid() (tainted bool)
//sys Kill(pid int, signum syscall.Signal) (err error)
//sys Kqueue() (fd int, err error)
//sys Lchown(path string, uid int, gid int) (err error)
//sys Link(path string, link string) (err error)
//sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
//sys Listen(s int, backlog int) (err error)
//sys Lstat(path string, stat *Stat_t) (err error)
//sys Mkdir(path string, mode uint32) (err error)
//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
//sys Mkfifo(path string, mode uint32) (err error)
//sys Mknod(path string, mode uint32, dev int) (err error)
//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
//sys Open(path string, mode int, perm uint32) (fd int, err error)
//sys Openat(fdat int, path string, mode int, perm uint32) (fd int, err error)
//sys Pathconf(path string, name int) (val int, err error)
//sys Pread(fd int, p []byte, offset int64) (n int, err error)
//sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
//sys read(fd int, p []byte) (n int, err error)
//sys Readlink(path string, buf []byte) (n int, err error)
//sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
//sys Rename(from string, to string) (err error)
//sys Renameat(fromfd int, from string, tofd int, to string) (err error)
//sys Revoke(path string) (err error)
//sys Rmdir(path string) (err error)
//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
//sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
//sysnb Setegid(egid int) (err error)
//sysnb Seteuid(euid int) (err error)
//sysnb Setgid(gid int) (err error)
//sys Setlogin(name string) (err error)
//sysnb Setpgid(pid int, pgid int) (err error)
//sys Setpriority(which int, who int, prio int) (err error)
//sysnb Setregid(rgid int, egid int) (err error)
//sysnb Setreuid(ruid int, euid int) (err error)
//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
//sysnb Setresuid(ruid int, euid int, suid int) (err error)
//sysnb Setrlimit(which int, lim *Rlimit) (err error)
//sysnb Setsid() (pid int, err error)
//sysnb Settimeofday(tp *Timeval) (err error)
//sysnb Setuid(uid int) (err error)
//sys Stat(path string, stat *Stat_t) (err error)
//sys Statfs(path string, stat *Statfs_t) (err error)
//sys Symlink(path string, link string) (err error)
//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
//sys Sync() (err error)
//sys Truncate(path string, length int64) (err error)
//sys Umask(newmask int) (oldmask int)
//sys Undelete(path string) (err error)
//sys Unlink(path string) (err error)
//sys Unlinkat(dirfd int, path string, flags int) (err error)
//sys Unmount(path string, flags int) (err error)
//sys write(fd int, p []byte) (n int, err error)
//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
//sys munmap(addr uintptr, length uintptr) (err error)
//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
//sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
/* * Unimplemented */ // Profil
// Sigaction
// Sigprocmask
// Getlogin
// Sigpending
// Sigaltstack
// Ioctl
// Reboot
// Execve
// Vfork
// Sbrk
// Sstk
// Ovadvise
// Mincore
// Setitimer
// Swapon
// Select
// Sigsuspend
// Readv
// Writev
// Nfssvc
// Getfh
// Quotactl
// Mount
// Csops
// Waitid
// Add_profil
// Kdebug_trace
// Sigreturn
// Atsocket
// Kqueue_from_portset_np
// Kqueue_portset
// Getattrlist
// Setattrlist
// Getdirentriesattr
// Searchfs
// Delete
// Copyfile
// Watchevent
// Waitevent
// Modwatch
// Getxattr
// Fgetxattr
// Setxattr
// Fsetxattr
// Removexattr
// Fremovexattr
// Listxattr
// Flistxattr
// Fsctl
// Initgroups
// Posix_spawn
// Nfsclnt
// Fhopen
// Minherit
// Semsys
// Msgsys
// Shmsys
// Semctl
// Semget
// Semop
// Msgctl
// Msgget
// Msgsnd
// Msgrcv
// Shmat
// Shmctl
// Shmdt
// Shmget
// Shm_open
// Shm_unlink
// Sem_open
// Sem_close
// Sem_unlink
// Sem_wait
// Sem_trywait
// Sem_post
// Sem_getvalue
// Sem_init
// Sem_destroy
// Open_extended
// Umask_extended
// Stat_extended
// Lstat_extended
// Fstat_extended
// Chmod_extended
// Fchmod_extended
// Access_extended
// Settid
// Gettid
// Setsgroups
// Getsgroups
// Setwgroups
// Getwgroups
// Mkfifo_extended
// Mkdir_extended
// Identitysvc
// Shared_region_check_np
// Shared_region_map_np
// __pthread_mutex_destroy
// __pthread_mutex_init
// __pthread_mutex_lock
// __pthread_mutex_trylock
// __pthread_mutex_unlock
// __pthread_cond_init
// __pthread_cond_destroy
// __pthread_cond_broadcast
// __pthread_cond_signal
// Setsid_with_pid
// __pthread_cond_timedwait
// Aio_fsync
// Aio_return
// Aio_suspend
// Aio_cancel
// Aio_error
// Aio_read
// Aio_write
// Lio_listio
// __pthread_cond_wait
// Iopolicysys
// __pthread_kill
// __pthread_sigmask
// __sigwait
// __disable_threadsignal
// __pthread_markcancel
// __pthread_canceled
// __semwait_signal
// Proc_info
// Stat64_extended
// Lstat64_extended
// Fstat64_extended
// __pthread_chdir
// __pthread_fchdir
// Audit
// Auditon
// Getauid
// Setauid
// Getaudit
// Setaudit
// Getaudit_addr
// Setaudit_addr
// Auditctl
// Bsdthread_create
// Bsdthread_terminate
// Stack_snapshot
// Bsdthread_register
// Workq_open
// Workq_ops
// __mac_execve
// __mac_syscall
// __mac_get_file
// __mac_set_file
// __mac_get_link
// __mac_set_link
// __mac_get_proc
// __mac_set_proc
// __mac_get_fd
// __mac_set_fd
// __mac_get_pid
// __mac_get_lcid
// __mac_get_lctx
// __mac_set_lctx
// Setlcid
// Read_nocancel
// Write_nocancel
// Open_nocancel
// Close_nocancel
// Wait4_nocancel
// Recvmsg_nocancel
// Sendmsg_nocancel
// Recvfrom_nocancel
// Accept_nocancel
// Fcntl_nocancel
// Select_nocancel
// Fsync_nocancel
// Connect_nocancel
// Sigsuspend_nocancel
// Readv_nocancel
// Writev_nocancel
// Sendto_nocancel
// Pread_nocancel
// Pwrite_nocancel
// Waitid_nocancel
// Poll_nocancel
// Msgsnd_nocancel
// Msgrcv_nocancel
// Sem_wait_nocancel
// Aio_suspend_nocancel
// __sigwait_nocancel
// __semwait_signal_nocancel
// __mac_mount
// __mac_get_mount
// __mac_getfsstat
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