diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_darwin.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_darwin.go | 269 |
1 files changed, 187 insertions, 82 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_darwin.go b/vendor/golang.org/x/sys/unix/syscall_darwin.go index 9a5a6ee..0eaab91 100644 --- a/vendor/golang.org/x/sys/unix/syscall_darwin.go +++ b/vendor/golang.org/x/sys/unix/syscall_darwin.go @@ -13,29 +13,12 @@ package unix import ( - "errors" + "fmt" + "runtime" "syscall" "unsafe" ) -const ImplementsGetwd = true - -func Getwd() (string, error) { - buf := make([]byte, 2048) - attrs, err := getAttrList(".", attrList{CommonAttr: attrCmnFullpath}, buf, 0) - if err == nil && len(attrs) == 1 && len(attrs[0]) >= 2 { - wd := string(attrs[0]) - // Sanity check that it's an absolute path and ends - // in a null byte, which we then strip. - if wd[0] == '/' && wd[len(wd)-1] == 0 { - return wd[:len(wd)-1], nil - } - } - // If pkg/os/getwd.go gets ENOTSUP, it will fall back to the - // slow algorithm. - return "", ENOTSUP -} - // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets. type SockaddrDatalink struct { Len uint8 @@ -49,6 +32,72 @@ type SockaddrDatalink struct { raw RawSockaddrDatalink } +// SockaddrCtl implements the Sockaddr interface for AF_SYSTEM type sockets. +type SockaddrCtl struct { + ID uint32 + Unit uint32 + raw RawSockaddrCtl +} + +func (sa *SockaddrCtl) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Sc_len = SizeofSockaddrCtl + sa.raw.Sc_family = AF_SYSTEM + sa.raw.Ss_sysaddr = AF_SYS_CONTROL + sa.raw.Sc_id = sa.ID + sa.raw.Sc_unit = sa.Unit + return unsafe.Pointer(&sa.raw), SizeofSockaddrCtl, nil +} + +// SockaddrVM implements the Sockaddr interface for AF_VSOCK type sockets. +// SockaddrVM provides access to Darwin VM sockets: a mechanism that enables +// bidirectional communication between a hypervisor and its guest virtual +// machines. +type SockaddrVM struct { + // CID and Port specify a context ID and port address for a VM socket. + // Guests have a unique CID, and hosts may have a well-known CID of: + // - VMADDR_CID_HYPERVISOR: refers to the hypervisor process. + // - VMADDR_CID_LOCAL: refers to local communication (loopback). + // - VMADDR_CID_HOST: refers to other processes on the host. + CID uint32 + Port uint32 + raw RawSockaddrVM +} + +func (sa *SockaddrVM) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Len = SizeofSockaddrVM + sa.raw.Family = AF_VSOCK + sa.raw.Port = sa.Port + sa.raw.Cid = sa.CID + + return unsafe.Pointer(&sa.raw), SizeofSockaddrVM, nil +} + +func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { + switch rsa.Addr.Family { + case AF_SYSTEM: + pp := (*RawSockaddrCtl)(unsafe.Pointer(rsa)) + if pp.Ss_sysaddr == AF_SYS_CONTROL { + sa := new(SockaddrCtl) + sa.ID = pp.Sc_id + sa.Unit = pp.Sc_unit + return sa, nil + } + case AF_VSOCK: + pp := (*RawSockaddrVM)(unsafe.Pointer(rsa)) + sa := &SockaddrVM{ + CID: pp.Cid, + Port: pp.Port, + } + return sa, nil + } + return nil, EAFNOSUPPORT +} + +// Some external packages rely on SYS___SYSCTL being defined to implement their +// own sysctl wrappers. Provide it here, even though direct syscalls are no +// longer supported on darwin. +const SYS___SYSCTL = SYS_SYSCTL + // 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]) @@ -92,11 +141,6 @@ func direntNamlen(buf []byte) (uint64, bool) { func PtraceAttach(pid int) (err error) { return ptrace(PT_ATTACH, pid, 0, 0) } func PtraceDetach(pid int) (err error) { return ptrace(PT_DETACH, pid, 0, 0) } -const ( - attrBitMapCount = 5 - attrCmnFullpath = 0x08000000 -) - type attrList struct { bitmapCount uint16 _ uint16 @@ -107,61 +151,18 @@ type attrList struct { Forkattr uint32 } -func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) (attrs [][]byte, err error) { - if len(attrBuf) < 4 { - return nil, errors.New("attrBuf too small") - } - attrList.bitmapCount = attrBitMapCount - - var _p0 *byte - _p0, err = BytePtrFromString(path) - if err != nil { - return nil, err - } - - if err := getattrlist(_p0, unsafe.Pointer(&attrList), unsafe.Pointer(&attrBuf[0]), uintptr(len(attrBuf)), int(options)); err != nil { - return nil, err - } - size := *(*uint32)(unsafe.Pointer(&attrBuf[0])) - - // dat is the section of attrBuf that contains valid data, - // without the 4 byte length header. All attribute offsets - // are relative to dat. - dat := attrBuf - if int(size) < len(attrBuf) { - dat = dat[:size] - } - dat = dat[4:] // remove length prefix - - for i := uint32(0); int(i) < len(dat); { - header := dat[i:] - if len(header) < 8 { - return attrs, errors.New("truncated attribute header") - } - datOff := *(*int32)(unsafe.Pointer(&header[0])) - attrLen := *(*uint32)(unsafe.Pointer(&header[4])) - if datOff < 0 || uint32(datOff)+attrLen > uint32(len(dat)) { - return attrs, errors.New("truncated results; attrBuf too small") - } - end := uint32(datOff) + attrLen - attrs = append(attrs, dat[datOff:end]) - i = end - if r := i % 4; r != 0 { - i += (4 - r) - } - } - return -} - -//sys getattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error) - -//sysnb pipe() (r int, w int, err error) +//sysnb pipe(p *[2]int32) (err error) func Pipe(p []int) (err error) { if len(p) != 2 { return EINVAL } - p[0], p[1], err = pipe() + var x [2]int32 + err = pipe(&x) + if err == nil { + p[0] = int(x[0]) + p[1] = int(x[1]) + } return } @@ -305,7 +306,7 @@ func setattrlistTimes(path string, times []Timespec, flags int) error { options) } -//sys setattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error) +//sys setattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error) func utimensat(dirfd int, path string, times *[2]Timespec, flags int) error { // Darwin doesn't support SYS_UTIMENSAT @@ -324,7 +325,36 @@ func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(sig //sys ioctl(fd int, req uint, arg uintptr) (err error) -//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS_SYSCTL +func IoctlCtlInfo(fd int, ctlInfo *CtlInfo) error { + err := ioctl(fd, CTLIOCGINFO, uintptr(unsafe.Pointer(ctlInfo))) + runtime.KeepAlive(ctlInfo) + return err +} + +// IfreqMTU is struct ifreq used to get or set a network device's MTU. +type IfreqMTU struct { + Name [IFNAMSIZ]byte + MTU int32 +} + +// IoctlGetIfreqMTU performs the SIOCGIFMTU ioctl operation on fd to get the MTU +// of the network device specified by ifname. +func IoctlGetIfreqMTU(fd int, ifname string) (*IfreqMTU, error) { + var ifreq IfreqMTU + copy(ifreq.Name[:], ifname) + err := ioctl(fd, SIOCGIFMTU, uintptr(unsafe.Pointer(&ifreq))) + return &ifreq, err +} + +// IoctlSetIfreqMTU performs the SIOCSIFMTU ioctl operation on fd to set the MTU +// of the network device specified by ifreq.Name. +func IoctlSetIfreqMTU(fd int, ifreq *IfreqMTU) error { + err := ioctl(fd, SIOCSIFMTU, uintptr(unsafe.Pointer(ifreq))) + runtime.KeepAlive(ifreq) + return err +} + +//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS_SYSCTL func Uname(uname *Utsname) error { mib := []_C_int{CTL_KERN, KERN_OSTYPE} @@ -382,8 +412,82 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e 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)) +} + +// GetsockoptXucred is a getsockopt wrapper that returns an Xucred struct. +// The usual level and opt are SOL_LOCAL and LOCAL_PEERCRED, respectively. +func GetsockoptXucred(fd, level, opt int) (*Xucred, error) { + x := new(Xucred) + vallen := _Socklen(SizeofXucred) + err := getsockopt(fd, level, opt, unsafe.Pointer(x), &vallen) + return x, err +} + +func SysctlKinfoProc(name string, args ...int) (*KinfoProc, error) { + mib, err := sysctlmib(name, args...) + if err != nil { + return nil, err + } + + var kinfo KinfoProc + n := uintptr(SizeofKinfoProc) + if err := sysctl(mib, (*byte)(unsafe.Pointer(&kinfo)), &n, nil, 0); err != nil { + return nil, err + } + if n != SizeofKinfoProc { + return nil, EIO + } + return &kinfo, nil +} + +func SysctlKinfoProcSlice(name string, args ...int) ([]KinfoProc, error) { + mib, err := sysctlmib(name, args...) + if err != nil { + return nil, err + } + + // Find size. + n := uintptr(0) + if err := sysctl(mib, nil, &n, nil, 0); err != nil { + return nil, err + } + if n == 0 { + return nil, nil + } + if n%SizeofKinfoProc != 0 { + return nil, fmt.Errorf("sysctl() returned a size of %d, which is not a multiple of %d", n, SizeofKinfoProc) + } + + // Read into buffer of that size. + buf := make([]KinfoProc, n/SizeofKinfoProc) + if err := sysctl(mib, (*byte)(unsafe.Pointer(&buf[0])), &n, nil, 0); err != nil { + return nil, err + } + if n%SizeofKinfoProc != 0 { + return nil, fmt.Errorf("sysctl() returned a size of %d, which is not a multiple of %d", n, SizeofKinfoProc) + } + + // The actual call may return less than the original reported required + // size so ensure we deal with that. + return buf[:n/SizeofKinfoProc], nil +} + //sys sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error) +//sys shmat(id int, addr uintptr, flag int) (ret uintptr, err error) +//sys shmctl(id int, cmd int, buf *SysvShmDesc) (result int, err error) +//sys shmdt(addr uintptr) (err error) +//sys shmget(key int, size int, flag int) (id int, err error) + /* * Exposed directly */ @@ -396,6 +500,8 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //sys Chroot(path string) (err error) //sys ClockGettime(clockid int32, time *Timespec) (err error) //sys Close(fd int) (err error) +//sys Clonefile(src string, dst string, flags int) (err error) +//sys Clonefileat(srcDirfd int, src string, dstDirfd int, dst string, flags int) (err error) //sys Dup(fd int) (nfd int, err error) //sys Dup2(from int, to int) (err error) //sys Exchangedata(path1 string, path2 string, options int) (err error) @@ -407,10 +513,12 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //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 Fclonefileat(srcDirfd int, dstDirfd int, dst string, flags int) (err error) //sys Flock(fd int, how int) (err error) //sys Fpathconf(fd int, name int) (val int, err error) //sys Fsync(fd int) (err error) //sys Ftruncate(fd int, length int64) (err error) +//sys Getcwd(buf []byte) (n int, err error) //sys Getdtablesize() (size int) //sysnb Getegid() (egid int) //sysnb Geteuid() (uid int) @@ -423,6 +531,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //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(tp *Timeval) (err error) //sysnb Getuid() (uid int) //sysnb Issetugid() (tainted bool) //sys Kqueue() (fd int, err error) @@ -471,8 +580,8 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //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 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 @@ -536,10 +645,6 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e // Msgget // Msgsnd // Msgrcv -// Shmat -// Shmctl -// Shmdt -// Shmget // Shm_open // Shm_unlink // Sem_open |