1 files changed, 606 insertions, 0 deletions

diff --git a/vendor/golang.org/x/sys/unix/syscall_unix.go b/vendor/golang.org/x/sys/unix/syscall_unix.go
new file mode 100644
index 0000000..77081de
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/syscall_unix.go
@@ -0,0 +1,606 @@
+// Copyright 2009 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.
+
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+
+package unix
+
+import (
+        "bytes"
+        "sort"
+        "sync"
+        "syscall"
+        "unsafe"
+)
+
+var (
+        Stdin  = 0
+        Stdout = 1
+        Stderr = 2
+)
+
+// Do the interface allocations only once for common
+// Errno values.
+var (
+        errEAGAIN error = syscall.EAGAIN
+        errEINVAL error = syscall.EINVAL
+        errENOENT error = syscall.ENOENT
+)
+
+var (
+        signalNameMapOnce sync.Once
+        signalNameMap     map[string]syscall.Signal
+)
+
+// errnoErr returns common boxed Errno values, to prevent
+// allocations at runtime.
+func errnoErr(e syscall.Errno) error {
+        switch e {
+        case 0:
+                return nil
+        case EAGAIN:
+                return errEAGAIN
+        case EINVAL:
+                return errEINVAL
+        case ENOENT:
+                return errENOENT
+        }
+        return e
+}
+
+// ErrnoName returns the error name for error number e.
+func ErrnoName(e syscall.Errno) string {
+        i := sort.Search(len(errorList), func(i int) bool {
+                return errorList[i].num >= e
+        })
+        if i < len(errorList) && errorList[i].num == e {
+                return errorList[i].name
+        }
+        return ""
+}
+
+// SignalName returns the signal name for signal number s.
+func SignalName(s syscall.Signal) string {
+        i := sort.Search(len(signalList), func(i int) bool {
+                return signalList[i].num >= s
+        })
+        if i < len(signalList) && signalList[i].num == s {
+                return signalList[i].name
+        }
+        return ""
+}
+
+// SignalNum returns the syscall.Signal for signal named s,
+// or 0 if a signal with such name is not found.
+// The signal name should start with "SIG".
+func SignalNum(s string) syscall.Signal {
+        signalNameMapOnce.Do(func() {
+                signalNameMap = make(map[string]syscall.Signal, len(signalList))
+                for _, signal := range signalList {
+                        signalNameMap[signal.name] = signal.num
+                }
+        })
+        return signalNameMap[s]
+}
+
+// clen returns the index of the first NULL byte in n or len(n) if n contains no NULL byte.
+func clen(n []byte) int {
+        i := bytes.IndexByte(n, 0)
+        if i == -1 {
+                i = len(n)
+        }
+        return i
+}
+
+// Mmap manager, for use by operating system-specific implementations.
+
+type mmapper struct {
+        sync.Mutex
+        active map[*byte][]byte // active mappings; key is last byte in mapping
+        mmap   func(addr, length uintptr, prot, flags, fd int, offset int64) (uintptr, error)
+        munmap func(addr uintptr, length uintptr) error
+}
+
+func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
+        if length <= 0 {
+                return nil, EINVAL
+        }
+
+        // Map the requested memory.
+        addr, errno := m.mmap(0, uintptr(length), prot, flags, fd, offset)
+        if errno != nil {
+                return nil, errno
+        }
+
+        // Use unsafe to convert addr into a []byte.
+        b := unsafe.Slice((*byte)(unsafe.Pointer(addr)), length)
+
+        // Register mapping in m and return it.
+        p := &b[cap(b)-1]
+        m.Lock()
+        defer m.Unlock()
+        m.active[p] = b
+        return b, nil
+}
+
+func (m *mmapper) Munmap(data []byte) (err error) {
+        if len(data) == 0 || len(data) != cap(data) {
+                return EINVAL
+        }
+
+        // Find the base of the mapping.
+        p := &data[cap(data)-1]
+        m.Lock()
+        defer m.Unlock()
+        b := m.active[p]
+        if b == nil || &b[0] != &data[0] {
+                return EINVAL
+        }
+
+        // Unmap the memory and update m.
+        if errno := m.munmap(uintptr(unsafe.Pointer(&b[0])), uintptr(len(b))); errno != nil {
+                return errno
+        }
+        delete(m.active, p)
+        return nil
+}
+
+func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
+        return mapper.Mmap(fd, offset, length, prot, flags)
+}
+
+func Munmap(b []byte) (err error) {
+        return mapper.Munmap(b)
+}
+
+func Read(fd int, p []byte) (n int, err error) {
+        n, err = read(fd, p)
+        if raceenabled {
+                if n > 0 {
+                        raceWriteRange(unsafe.Pointer(&p[0]), n)
+                }
+                if err == nil {
+                        raceAcquire(unsafe.Pointer(&ioSync))
+                }
+        }
+        return
+}
+
+func Write(fd int, p []byte) (n int, err error) {
+        if raceenabled {
+                raceReleaseMerge(unsafe.Pointer(&ioSync))
+        }
+        n, err = write(fd, p)
+        if raceenabled && n > 0 {
+                raceReadRange(unsafe.Pointer(&p[0]), n)
+        }
+        return
+}
+
+func Pread(fd int, p []byte, offset int64) (n int, err error) {
+        n, err = pread(fd, p, offset)
+        if raceenabled {
+                if n > 0 {
+                        raceWriteRange(unsafe.Pointer(&p[0]), n)
+                }
+                if err == nil {
+                        raceAcquire(unsafe.Pointer(&ioSync))
+                }
+        }
+        return
+}
+
+func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
+        if raceenabled {
+                raceReleaseMerge(unsafe.Pointer(&ioSync))
+        }
+        n, err = pwrite(fd, p, offset)
+        if raceenabled && n > 0 {
+                raceReadRange(unsafe.Pointer(&p[0]), n)
+        }
+        return
+}
+
+// For testing: clients can set this flag to force
+// creation of IPv6 sockets to return EAFNOSUPPORT.
+var SocketDisableIPv6 bool
+
+// Sockaddr represents a socket address.
+type Sockaddr interface {
+        sockaddr() (ptr unsafe.Pointer, len _Socklen, err error) // lowercase; only we can define Sockaddrs
+}
+
+// SockaddrInet4 implements the Sockaddr interface for AF_INET type sockets.
+type SockaddrInet4 struct {
+        Port int
+        Addr [4]byte
+        raw  RawSockaddrInet4
+}
+
+// SockaddrInet6 implements the Sockaddr interface for AF_INET6 type sockets.
+type SockaddrInet6 struct {
+        Port   int
+        ZoneId uint32
+        Addr   [16]byte
+        raw    RawSockaddrInet6
+}
+
+// SockaddrUnix implements the Sockaddr interface for AF_UNIX type sockets.
+type SockaddrUnix struct {
+        Name string
+        raw  RawSockaddrUnix
+}
+
+func Bind(fd int, sa Sockaddr) (err error) {
+        ptr, n, err := sa.sockaddr()
+        if err != nil {
+                return err
+        }
+        return bind(fd, ptr, n)
+}
+
+func Connect(fd int, sa Sockaddr) (err error) {
+        ptr, n, err := sa.sockaddr()
+        if err != nil {
+                return err
+        }
+        return connect(fd, ptr, n)
+}
+
+func Getpeername(fd int) (sa Sockaddr, err error) {
+        var rsa RawSockaddrAny
+        var len _Socklen = SizeofSockaddrAny
+        if err = getpeername(fd, &rsa, &len); err != nil {
+                return
+        }
+        return anyToSockaddr(fd, &rsa)
+}
+
+func GetsockoptByte(fd, level, opt int) (value byte, err error) {
+        var n byte
+        vallen := _Socklen(1)
+        err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen)
+        return n, err
+}
+
+func GetsockoptInt(fd, level, opt int) (value int, err error) {
+        var n int32
+        vallen := _Socklen(4)
+        err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen)
+        return int(n), err
+}
+
+func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) {
+        vallen := _Socklen(4)
+        err = getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen)
+        return value, err
+}
+
+func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) {
+        var value IPMreq
+        vallen := _Socklen(SizeofIPMreq)
+        err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
+        return &value, err
+}
+
+func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) {
+        var value IPv6Mreq
+        vallen := _Socklen(SizeofIPv6Mreq)
+        err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
+        return &value, err
+}
+
+func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) {
+        var value IPv6MTUInfo
+        vallen := _Socklen(SizeofIPv6MTUInfo)
+        err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
+        return &value, err
+}
+
+func GetsockoptICMPv6Filter(fd, level, opt int) (*ICMPv6Filter, error) {
+        var value ICMPv6Filter
+        vallen := _Socklen(SizeofICMPv6Filter)
+        err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
+        return &value, err
+}
+
+func GetsockoptLinger(fd, level, opt int) (*Linger, error) {
+        var linger Linger
+        vallen := _Socklen(SizeofLinger)
+        err := getsockopt(fd, level, opt, unsafe.Pointer(&linger), &vallen)
+        return &linger, err
+}
+
+func GetsockoptTimeval(fd, level, opt int) (*Timeval, error) {
+        var tv Timeval
+        vallen := _Socklen(unsafe.Sizeof(tv))
+        err := getsockopt(fd, level, opt, unsafe.Pointer(&tv), &vallen)
+        return &tv, err
+}
+
+func GetsockoptUint64(fd, level, opt int) (value uint64, err error) {
+        var n uint64
+        vallen := _Socklen(8)
+        err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen)
+        return n, err
+}
+
+func Recvfrom(fd int, p []byte, flags int) (n int, from Sockaddr, err error) {
+        var rsa RawSockaddrAny
+        var len _Socklen = SizeofSockaddrAny
+        if n, err = recvfrom(fd, p, flags, &rsa, &len); err != nil {
+                return
+        }
+        if rsa.Addr.Family != AF_UNSPEC {
+                from, err = anyToSockaddr(fd, &rsa)
+        }
+        return
+}
+
+// Recvmsg receives a message from a socket using the recvmsg system call. The
+// received non-control data will be written to p, and any "out of band"
+// control data will be written to oob. The flags are passed to recvmsg.
+//
+// The results are:
+//   - n is the number of non-control data bytes read into p
+//   - oobn is the number of control data bytes read into oob; this may be interpreted using [ParseSocketControlMessage]
+//   - recvflags is flags returned by recvmsg
+//   - from is the address of the sender
+//
+// If the underlying socket type is not SOCK_DGRAM, a received message
+// containing oob data and a single '\0' of non-control data is treated as if
+// the message contained only control data, i.e. n will be zero on return.
+func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
+        var iov [1]Iovec
+        if len(p) > 0 {
+                iov[0].Base = &p[0]
+                iov[0].SetLen(len(p))
+        }
+        var rsa RawSockaddrAny
+        n, oobn, recvflags, err = recvmsgRaw(fd, iov[:], oob, flags, &rsa)
+        // source address is only specified if the socket is unconnected
+        if rsa.Addr.Family != AF_UNSPEC {
+                from, err = anyToSockaddr(fd, &rsa)
+        }
+        return
+}
+
+// RecvmsgBuffers receives a message from a socket using the recvmsg system
+// call. This function is equivalent to Recvmsg, but non-control data read is
+// scattered into the buffers slices.
+func RecvmsgBuffers(fd int, buffers [][]byte, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) {
+        iov := make([]Iovec, len(buffers))
+        for i := range buffers {
+                if len(buffers[i]) > 0 {
+                        iov[i].Base = &buffers[i][0]
+                        iov[i].SetLen(len(buffers[i]))
+                } else {
+                        iov[i].Base = (*byte)(unsafe.Pointer(&_zero))
+                }
+        }
+        var rsa RawSockaddrAny
+        n, oobn, recvflags, err = recvmsgRaw(fd, iov, oob, flags, &rsa)
+        if err == nil && rsa.Addr.Family != AF_UNSPEC {
+                from, err = anyToSockaddr(fd, &rsa)
+        }
+        return
+}
+
+// Sendmsg sends a message on a socket to an address using the sendmsg system
+// call. This function is equivalent to SendmsgN, but does not return the
+// number of bytes actually sent.
+func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
+        _, err = SendmsgN(fd, p, oob, to, flags)
+        return
+}
+
+// SendmsgN sends a message on a socket to an address using the sendmsg system
+// call. p contains the non-control data to send, and oob contains the "out of
+// band" control data. The flags are passed to sendmsg. The number of
+// non-control bytes actually written to the socket is returned.
+//
+// Some socket types do not support sending control data without accompanying
+// non-control data. If p is empty, and oob contains control data, and the
+// underlying socket type is not SOCK_DGRAM, p will be treated as containing a
+// single '\0' and the return value will indicate zero bytes sent.
+//
+// The Go function Recvmsg, if called with an empty p and a non-empty oob,
+// will read and ignore this additional '\0'.  If the message is received by
+// code that does not use Recvmsg, or that does not use Go at all, that code
+// will need to be written to expect and ignore the additional '\0'.
+//
+// If you need to send non-empty oob with p actually empty, and if the
+// underlying socket type supports it, you can do so via a raw system call as
+// follows:
+//
+//      msg := &unix.Msghdr{
+//          Control: &oob[0],
+//      }
+//      msg.SetControllen(len(oob))
+//      n, _, errno := unix.Syscall(unix.SYS_SENDMSG, uintptr(fd), uintptr(unsafe.Pointer(msg)), flags)
+func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
+        var iov [1]Iovec
+        if len(p) > 0 {
+                iov[0].Base = &p[0]
+                iov[0].SetLen(len(p))
+        }
+        var ptr unsafe.Pointer
+        var salen _Socklen
+        if to != nil {
+                ptr, salen, err = to.sockaddr()
+                if err != nil {
+                        return 0, err
+                }
+        }
+        return sendmsgN(fd, iov[:], oob, ptr, salen, flags)
+}
+
+// SendmsgBuffers sends a message on a socket to an address using the sendmsg
+// system call. This function is equivalent to SendmsgN, but the non-control
+// data is gathered from buffers.
+func SendmsgBuffers(fd int, buffers [][]byte, oob []byte, to Sockaddr, flags int) (n int, err error) {
+        iov := make([]Iovec, len(buffers))
+        for i := range buffers {
+                if len(buffers[i]) > 0 {
+                        iov[i].Base = &buffers[i][0]
+                        iov[i].SetLen(len(buffers[i]))
+                } else {
+                        iov[i].Base = (*byte)(unsafe.Pointer(&_zero))
+                }
+        }
+        var ptr unsafe.Pointer
+        var salen _Socklen
+        if to != nil {
+                ptr, salen, err = to.sockaddr()
+                if err != nil {
+                        return 0, err
+                }
+        }
+        return sendmsgN(fd, iov, oob, ptr, salen, flags)
+}
+
+func Send(s int, buf []byte, flags int) (err error) {
+        return sendto(s, buf, flags, nil, 0)
+}
+
+func Sendto(fd int, p []byte, flags int, to Sockaddr) (err error) {
+        var ptr unsafe.Pointer
+        var salen _Socklen
+        if to != nil {
+                ptr, salen, err = to.sockaddr()
+                if err != nil {
+                        return err
+                }
+        }
+        return sendto(fd, p, flags, ptr, salen)
+}
+
+func SetsockoptByte(fd, level, opt int, value byte) (err error) {
+        return setsockopt(fd, level, opt, unsafe.Pointer(&value), 1)
+}
+
+func SetsockoptInt(fd, level, opt int, value int) (err error) {
+        var n = int32(value)
+        return setsockopt(fd, level, opt, unsafe.Pointer(&n), 4)
+}
+
+func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (err error) {
+        return setsockopt(fd, level, opt, unsafe.Pointer(&value[0]), 4)
+}
+
+func SetsockoptIPMreq(fd, level, opt int, mreq *IPMreq) (err error) {
+        return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPMreq)
+}
+
+func SetsockoptIPv6Mreq(fd, level, opt int, mreq *IPv6Mreq) (err error) {
+        return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPv6Mreq)
+}
+
+func SetsockoptICMPv6Filter(fd, level, opt int, filter *ICMPv6Filter) error {
+        return setsockopt(fd, level, opt, unsafe.Pointer(filter), SizeofICMPv6Filter)
+}
+
+func SetsockoptLinger(fd, level, opt int, l *Linger) (err error) {
+        return setsockopt(fd, level, opt, unsafe.Pointer(l), SizeofLinger)
+}
+
+func SetsockoptString(fd, level, opt int, s string) (err error) {
+        var p unsafe.Pointer
+        if len(s) > 0 {
+                p = unsafe.Pointer(&[]byte(s)[0])
+        }
+        return setsockopt(fd, level, opt, p, uintptr(len(s)))
+}
+
+func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (err error) {
+        return setsockopt(fd, level, opt, unsafe.Pointer(tv), unsafe.Sizeof(*tv))
+}
+
+func SetsockoptUint64(fd, level, opt int, value uint64) (err error) {
+        return setsockopt(fd, level, opt, unsafe.Pointer(&value), 8)
+}
+
+func Socket(domain, typ, proto int) (fd int, err error) {
+        if domain == AF_INET6 && SocketDisableIPv6 {
+                return -1, EAFNOSUPPORT
+        }
+        fd, err = socket(domain, typ, proto)
+        return
+}
+
+func Socketpair(domain, typ, proto int) (fd [2]int, err error) {
+        var fdx [2]int32
+        err = socketpair(domain, typ, proto, &fdx)
+        if err == nil {
+                fd[0] = int(fdx[0])
+                fd[1] = int(fdx[1])
+        }
+        return
+}
+
+var ioSync int64
+
+func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) }
+
+func SetNonblock(fd int, nonblocking bool) (err error) {
+        flag, err := fcntl(fd, F_GETFL, 0)
+        if err != nil {
+                return err
+        }
+        if (flag&O_NONBLOCK != 0) == nonblocking {
+                return nil
+        }
+        if nonblocking {
+                flag |= O_NONBLOCK
+        } else {
+                flag &= ^O_NONBLOCK
+        }
+        _, err = fcntl(fd, F_SETFL, flag)
+        return err
+}
+
+// Exec calls execve(2), which replaces the calling executable in the process
+// tree. argv0 should be the full path to an executable ("/bin/ls") and the
+// executable name should also be the first argument in argv (["ls", "-l"]).
+// envv are the environment variables that should be passed to the new
+// process (["USER=go", "PWD=/tmp"]).
+func Exec(argv0 string, argv []string, envv []string) error {
+        return syscall.Exec(argv0, argv, envv)
+}
+
+// Lutimes sets the access and modification times tv on path. If path refers to
+// a symlink, it is not dereferenced and the timestamps are set on the symlink.
+// If tv is nil, the access and modification times are set to the current time.
+// Otherwise tv must contain exactly 2 elements, with access time as the first
+// element and modification time as the second element.
+func Lutimes(path string, tv []Timeval) error {
+        if tv == nil {
+                return UtimesNanoAt(AT_FDCWD, path, nil, AT_SYMLINK_NOFOLLOW)
+        }
+        if len(tv) != 2 {
+                return EINVAL
+        }
+        ts := []Timespec{
+                NsecToTimespec(TimevalToNsec(tv[0])),
+                NsecToTimespec(TimevalToNsec(tv[1])),
+        }
+        return UtimesNanoAt(AT_FDCWD, path, ts, AT_SYMLINK_NOFOLLOW)
+}
+
+// emptyIovecs reports whether there are no bytes in the slice of Iovec.
+func emptyIovecs(iov []Iovec) bool {
+        for i := range iov {
+                if iov[i].Len > 0 {
+                        return false
+                }
+        }
+        return true
+}
+
+// Setrlimit sets a resource limit.
+func Setrlimit(resource int, rlim *Rlimit) error {
+        // Just call the syscall version, because as of Go 1.21
+        // it will affect starting a new process.
+        return syscall.Setrlimit(resource, (*syscall.Rlimit)(rlim))
+}