vendor: update the vendored sources
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
This commit is contained in:
parent
66fcc4c2f9
commit
8f06855856
GPG key ID:
10937E57733F1362
288 changed files with 26090 additions and 98389 deletions
496
vendor/golang.org/x/sys/unix/syscall_linux.go
generated
vendored
496
vendor/golang.org/x/sys/unix/syscall_linux.go
generated
vendored
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@ -82,21 +82,18 @@ func IoctlRetInt(fd int, req uint) (int, error) {
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return int(ret), nil
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}
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// IoctlSetPointerInt performs an ioctl operation which sets an
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// integer value on fd, using the specified request number. The ioctl
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// argument is called with a pointer to the integer value, rather than
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// passing the integer value directly.
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func IoctlSetPointerInt(fd int, req uint, value int) error {
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v := int32(value)
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return ioctl(fd, req, uintptr(unsafe.Pointer(&v)))
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}
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func IoctlSetRTCTime(fd int, value *RTCTime) error {
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err := ioctl(fd, RTC_SET_TIME, uintptr(unsafe.Pointer(value)))
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runtime.KeepAlive(value)
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return err
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}
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func IoctlSetRTCWkAlrm(fd int, value *RTCWkAlrm) error {
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err := ioctl(fd, RTC_WKALM_SET, uintptr(unsafe.Pointer(value)))
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runtime.KeepAlive(value)
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return err
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}
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func IoctlGetUint32(fd int, req uint) (uint32, error) {
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var value uint32
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err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
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@ -109,6 +106,53 @@ func IoctlGetRTCTime(fd int) (*RTCTime, error) {
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return &value, err
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}
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// IoctlGetWatchdogInfo fetches information about a watchdog device from the
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// Linux watchdog API. For more information, see:
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// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html.
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func IoctlGetWatchdogInfo(fd int) (*WatchdogInfo, error) {
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var value WatchdogInfo
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err := ioctl(fd, WDIOC_GETSUPPORT, uintptr(unsafe.Pointer(&value)))
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return &value, err
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}
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func IoctlGetRTCWkAlrm(fd int) (*RTCWkAlrm, error) {
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var value RTCWkAlrm
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err := ioctl(fd, RTC_WKALM_RD, uintptr(unsafe.Pointer(&value)))
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return &value, err
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}
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// IoctlFileCloneRange performs an FICLONERANGE ioctl operation to clone the
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// range of data conveyed in value to the file associated with the file
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// descriptor destFd. See the ioctl_ficlonerange(2) man page for details.
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func IoctlFileCloneRange(destFd int, value *FileCloneRange) error {
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err := ioctl(destFd, FICLONERANGE, uintptr(unsafe.Pointer(value)))
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runtime.KeepAlive(value)
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return err
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}
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// IoctlFileClone performs an FICLONE ioctl operation to clone the entire file
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// associated with the file description srcFd to the file associated with the
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// file descriptor destFd. See the ioctl_ficlone(2) man page for details.
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func IoctlFileClone(destFd, srcFd int) error {
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return ioctl(destFd, FICLONE, uintptr(srcFd))
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}
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// IoctlFileDedupeRange performs an FIDEDUPERANGE ioctl operation to share the
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// range of data conveyed in value with the file associated with the file
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// descriptor destFd. See the ioctl_fideduperange(2) man page for details.
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func IoctlFileDedupeRange(destFd int, value *FileDedupeRange) error {
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err := ioctl(destFd, FIDEDUPERANGE, uintptr(unsafe.Pointer(value)))
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runtime.KeepAlive(value)
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return err
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}
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// IoctlWatchdogKeepalive issues a keepalive ioctl to a watchdog device. For
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// more information, see:
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// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html.
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func IoctlWatchdogKeepalive(fd int) error {
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return ioctl(fd, WDIOC_KEEPALIVE, 0)
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}
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//sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error)
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func Link(oldpath string, newpath string) (err error) {
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@ -133,6 +177,12 @@ func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
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return openat(dirfd, path, flags|O_LARGEFILE, mode)
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}
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//sys openat2(dirfd int, path string, open_how *OpenHow, size int) (fd int, err error)
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func Openat2(dirfd int, path string, how *OpenHow) (fd int, err error) {
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return openat2(dirfd, path, how, SizeofOpenHow)
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}
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//sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
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func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
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@ -591,6 +641,36 @@ func (sa *SockaddrCAN) sockaddr() (unsafe.Pointer, _Socklen, error) {
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return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil
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}
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// SockaddrCANJ1939 implements the Sockaddr interface for AF_CAN using J1939
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// protocol (https://en.wikipedia.org/wiki/SAE_J1939). For more information
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// on the purposes of the fields, check the official linux kernel documentation
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// available here: https://www.kernel.org/doc/Documentation/networking/j1939.rst
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type SockaddrCANJ1939 struct {
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Ifindex int
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Name uint64
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PGN uint32
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Addr uint8
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raw RawSockaddrCAN
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}
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func (sa *SockaddrCANJ1939) sockaddr() (unsafe.Pointer, _Socklen, error) {
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if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff {
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return nil, 0, EINVAL
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}
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sa.raw.Family = AF_CAN
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sa.raw.Ifindex = int32(sa.Ifindex)
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n := (*[8]byte)(unsafe.Pointer(&sa.Name))
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for i := 0; i < 8; i++ {
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sa.raw.Addr[i] = n[i]
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}
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p := (*[4]byte)(unsafe.Pointer(&sa.PGN))
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for i := 0; i < 4; i++ {
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sa.raw.Addr[i+8] = p[i]
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}
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sa.raw.Addr[12] = sa.Addr
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return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil
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}
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// SockaddrALG implements the Sockaddr interface for AF_ALG type sockets.
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// SockaddrALG enables userspace access to the Linux kernel's cryptography
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// subsystem. The Type and Name fields specify which type of hash or cipher
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@ -839,6 +919,73 @@ func (sa *SockaddrTIPC) sockaddr() (unsafe.Pointer, _Socklen, error) {
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return unsafe.Pointer(&sa.raw), SizeofSockaddrTIPC, nil
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}
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// SockaddrL2TPIP implements the Sockaddr interface for IPPROTO_L2TP/AF_INET sockets.
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type SockaddrL2TPIP struct {
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Addr [4]byte
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ConnId uint32
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raw RawSockaddrL2TPIP
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}
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func (sa *SockaddrL2TPIP) sockaddr() (unsafe.Pointer, _Socklen, error) {
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sa.raw.Family = AF_INET
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sa.raw.Conn_id = sa.ConnId
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrL2TPIP, nil
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}
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// SockaddrL2TPIP6 implements the Sockaddr interface for IPPROTO_L2TP/AF_INET6 sockets.
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type SockaddrL2TPIP6 struct {
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Addr [16]byte
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ZoneId uint32
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ConnId uint32
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raw RawSockaddrL2TPIP6
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}
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func (sa *SockaddrL2TPIP6) sockaddr() (unsafe.Pointer, _Socklen, error) {
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sa.raw.Family = AF_INET6
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sa.raw.Conn_id = sa.ConnId
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sa.raw.Scope_id = sa.ZoneId
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for i := 0; i < len(sa.Addr); i++ {
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sa.raw.Addr[i] = sa.Addr[i]
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrL2TPIP6, nil
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}
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// SockaddrIUCV implements the Sockaddr interface for AF_IUCV sockets.
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type SockaddrIUCV struct {
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UserID string
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Name string
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raw RawSockaddrIUCV
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}
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func (sa *SockaddrIUCV) sockaddr() (unsafe.Pointer, _Socklen, error) {
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sa.raw.Family = AF_IUCV
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// These are EBCDIC encoded by the kernel, but we still need to pad them
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// with blanks. Initializing with blanks allows the caller to feed in either
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// a padded or an unpadded string.
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for i := 0; i < 8; i++ {
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sa.raw.Nodeid[i] = ' '
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sa.raw.User_id[i] = ' '
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sa.raw.Name[i] = ' '
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}
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if len(sa.UserID) > 8 || len(sa.Name) > 8 {
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return nil, 0, EINVAL
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}
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for i, b := range []byte(sa.UserID[:]) {
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sa.raw.User_id[i] = int8(b)
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}
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for i, b := range []byte(sa.Name[:]) {
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sa.raw.Name[i] = int8(b)
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}
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return unsafe.Pointer(&sa.raw), SizeofSockaddrIUCV, nil
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}
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var socketProtocol = func(fd int) (int, error) {
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return GetsockoptInt(fd, SOL_SOCKET, SO_PROTOCOL)
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}
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func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
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switch rsa.Addr.Family {
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case AF_NETLINK:
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@ -889,25 +1036,58 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
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return sa, nil
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case AF_INET:
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pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet4)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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proto, err := socketProtocol(fd)
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if err != nil {
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return nil, err
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}
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switch proto {
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case IPPROTO_L2TP:
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pp := (*RawSockaddrL2TPIP)(unsafe.Pointer(rsa))
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sa := new(SockaddrL2TPIP)
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sa.ConnId = pp.Conn_id
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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default:
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pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet4)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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}
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return sa, nil
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case AF_INET6:
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pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet6)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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sa.ZoneId = pp.Scope_id
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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proto, err := socketProtocol(fd)
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if err != nil {
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return nil, err
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}
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switch proto {
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case IPPROTO_L2TP:
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pp := (*RawSockaddrL2TPIP6)(unsafe.Pointer(rsa))
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sa := new(SockaddrL2TPIP6)
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sa.ConnId = pp.Conn_id
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sa.ZoneId = pp.Scope_id
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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default:
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pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
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sa := new(SockaddrInet6)
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p := (*[2]byte)(unsafe.Pointer(&pp.Port))
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sa.Port = int(p[0])<<8 + int(p[1])
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sa.ZoneId = pp.Scope_id
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for i := 0; i < len(sa.Addr); i++ {
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sa.Addr[i] = pp.Addr[i]
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}
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return sa, nil
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}
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return sa, nil
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case AF_VSOCK:
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pp := (*RawSockaddrVM)(unsafe.Pointer(rsa))
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@ -917,7 +1097,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
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}
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return sa, nil
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case AF_BLUETOOTH:
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proto, err := GetsockoptInt(fd, SOL_SOCKET, SO_PROTOCOL)
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proto, err := socketProtocol(fd)
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if err != nil {
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return nil, err
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}
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@ -986,6 +1166,61 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
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}
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return sa, nil
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case AF_IUCV:
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pp := (*RawSockaddrIUCV)(unsafe.Pointer(rsa))
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var user [8]byte
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var name [8]byte
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for i := 0; i < 8; i++ {
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user[i] = byte(pp.User_id[i])
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name[i] = byte(pp.Name[i])
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}
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sa := &SockaddrIUCV{
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UserID: string(user[:]),
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Name: string(name[:]),
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}
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return sa, nil
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case AF_CAN:
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proto, err := socketProtocol(fd)
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if err != nil {
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return nil, err
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}
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pp := (*RawSockaddrCAN)(unsafe.Pointer(rsa))
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switch proto {
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case CAN_J1939:
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sa := &SockaddrCANJ1939{
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Ifindex: int(pp.Ifindex),
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}
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name := (*[8]byte)(unsafe.Pointer(&sa.Name))
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for i := 0; i < 8; i++ {
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name[i] = pp.Addr[i]
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}
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pgn := (*[4]byte)(unsafe.Pointer(&sa.PGN))
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for i := 0; i < 4; i++ {
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pgn[i] = pp.Addr[i+8]
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}
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addr := (*[1]byte)(unsafe.Pointer(&sa.Addr))
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addr[0] = pp.Addr[12]
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return sa, nil
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default:
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sa := &SockaddrCAN{
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Ifindex: int(pp.Ifindex),
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}
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rx := (*[4]byte)(unsafe.Pointer(&sa.RxID))
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for i := 0; i < 4; i++ {
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rx[i] = pp.Addr[i]
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}
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tx := (*[4]byte)(unsafe.Pointer(&sa.TxID))
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for i := 0; i < 4; i++ {
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tx[i] = pp.Addr[i+4]
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}
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return sa, nil
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}
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}
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return nil, EAFNOSUPPORT
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}
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@ -1555,8 +1790,8 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
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//sys Acct(path string) (err error)
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//sys AddKey(keyType string, description string, payload []byte, ringid int) (id int, err error)
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//sys Adjtimex(buf *Timex) (state int, err error)
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//sys Capget(hdr *CapUserHeader, data *CapUserData) (err error)
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//sys Capset(hdr *CapUserHeader, data *CapUserData) (err error)
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//sysnb Capget(hdr *CapUserHeader, data *CapUserData) (err error)
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//sysnb Capset(hdr *CapUserHeader, data *CapUserData) (err error)
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//sys Chdir(path string) (err error)
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//sys Chroot(path string) (err error)
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//sys ClockGetres(clockid int32, res *Timespec) (err error)
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@ -1566,6 +1801,15 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
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//sys CopyFileRange(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
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//sys DeleteModule(name string, flags int) (err error)
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//sys Dup(oldfd int) (fd int, err error)
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func Dup2(oldfd, newfd int) error {
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// Android O and newer blocks dup2; riscv and arm64 don't implement dup2.
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if runtime.GOOS == "android" || runtime.GOARCH == "riscv64" || runtime.GOARCH == "arm64" {
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return Dup3(oldfd, newfd, 0)
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}
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return dup2(oldfd, newfd)
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}
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//sys Dup3(oldfd int, newfd int, flags int) (err error)
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//sysnb EpollCreate1(flag int) (fd int, err error)
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//sysnb EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error)
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@ -1575,7 +1819,6 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
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//sys Fchdir(fd int) (err error)
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//sys Fchmod(fd int, mode uint32) (err error)
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//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
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//sys fcntl(fd int, cmd int, arg int) (val int, err error)
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//sys Fdatasync(fd int) (err error)
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//sys Fgetxattr(fd int, attr string, dest []byte) (sz int, err error)
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//sys FinitModule(fd int, params string, flags int) (err error)
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@ -1631,6 +1874,17 @@ func Getpgrp() (pid int) {
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//sysnb Settimeofday(tv *Timeval) (err error)
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//sys Setns(fd int, nstype int) (err error)
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// PrctlRetInt performs a prctl operation specified by option and further
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// optional arguments arg2 through arg5 depending on option. It returns a
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// non-negative integer that is returned by the prctl syscall.
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func PrctlRetInt(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (int, error) {
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ret, _, err := Syscall6(SYS_PRCTL, uintptr(option), uintptr(arg2), uintptr(arg3), uintptr(arg4), uintptr(arg5), 0)
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if err != 0 {
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return 0, err
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}
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return int(ret), nil
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}
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// issue 1435.
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// On linux Setuid and Setgid only affects the current thread, not the process.
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// This does not match what most callers expect so we must return an error
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||||
|
|
@ -1644,6 +1898,30 @@ func Setgid(uid int) (err error) {
|
|||
return EOPNOTSUPP
|
||||
}
|
||||
|
||||
// SetfsgidRetGid sets fsgid for current thread and returns previous fsgid set.
|
||||
// setfsgid(2) will return a non-nil error only if its caller lacks CAP_SETUID capability.
|
||||
// If the call fails due to other reasons, current fsgid will be returned.
|
||||
func SetfsgidRetGid(gid int) (int, error) {
|
||||
return setfsgid(gid)
|
||||
}
|
||||
|
||||
// SetfsuidRetUid sets fsuid for current thread and returns previous fsuid set.
|
||||
// setfsgid(2) will return a non-nil error only if its caller lacks CAP_SETUID capability
|
||||
// If the call fails due to other reasons, current fsuid will be returned.
|
||||
func SetfsuidRetUid(uid int) (int, error) {
|
||||
return setfsuid(uid)
|
||||
}
|
||||
|
||||
func Setfsgid(gid int) error {
|
||||
_, err := setfsgid(gid)
|
||||
return err
|
||||
}
|
||||
|
||||
func Setfsuid(uid int) error {
|
||||
_, err := setfsuid(uid)
|
||||
return err
|
||||
}
|
||||
|
||||
func Signalfd(fd int, sigmask *Sigset_t, flags int) (newfd int, err error) {
|
||||
return signalfd(fd, sigmask, _C__NSIG/8, flags)
|
||||
}
|
||||
|
|
@ -1656,6 +1934,9 @@ func Signalfd(fd int, sigmask *Sigset_t, flags int) (newfd int, err error) {
|
|||
//sys Syncfs(fd int) (err error)
|
||||
//sysnb Sysinfo(info *Sysinfo_t) (err error)
|
||||
//sys Tee(rfd int, wfd int, len int, flags int) (n int64, err error)
|
||||
//sysnb TimerfdCreate(clockid int, flags int) (fd int, err error)
|
||||
//sysnb TimerfdGettime(fd int, currValue *ItimerSpec) (err error)
|
||||
//sysnb TimerfdSettime(fd int, flags int, newValue *ItimerSpec, oldValue *ItimerSpec) (err error)
|
||||
//sysnb Tgkill(tgid int, tid int, sig syscall.Signal) (err error)
|
||||
//sysnb Times(tms *Tms) (ticks uintptr, err error)
|
||||
//sysnb Umask(mask int) (oldmask int)
|
||||
|
|
@ -1666,6 +1947,123 @@ func Signalfd(fd int, sigmask *Sigset_t, flags int) (newfd int, err error) {
|
|||
//sys exitThread(code int) (err error) = SYS_EXIT
|
||||
//sys readlen(fd int, p *byte, np int) (n int, err error) = SYS_READ
|
||||
//sys writelen(fd int, p *byte, np int) (n int, err error) = SYS_WRITE
|
||||
//sys readv(fd int, iovs []Iovec) (n int, err error) = SYS_READV
|
||||
//sys writev(fd int, iovs []Iovec) (n int, err error) = SYS_WRITEV
|
||||
//sys preadv(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PREADV
|
||||
//sys pwritev(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PWRITEV
|
||||
//sys preadv2(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PREADV2
|
||||
//sys pwritev2(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PWRITEV2
|
||||
|
||||
func bytes2iovec(bs [][]byte) []Iovec {
|
||||
iovecs := make([]Iovec, len(bs))
|
||||
for i, b := range bs {
|
||||
iovecs[i].SetLen(len(b))
|
||||
if len(b) > 0 {
|
||||
iovecs[i].Base = &b[0]
|
||||
} else {
|
||||
iovecs[i].Base = (*byte)(unsafe.Pointer(&_zero))
|
||||
}
|
||||
}
|
||||
return iovecs
|
||||
}
|
||||
|
||||
// offs2lohi splits offs into its lower and upper unsigned long. On 64-bit
|
||||
// systems, hi will always be 0. On 32-bit systems, offs will be split in half.
|
||||
// preadv/pwritev chose this calling convention so they don't need to add a
|
||||
// padding-register for alignment on ARM.
|
||||
func offs2lohi(offs int64) (lo, hi uintptr) {
|
||||
return uintptr(offs), uintptr(uint64(offs) >> SizeofLong)
|
||||
}
|
||||
|
||||
func Readv(fd int, iovs [][]byte) (n int, err error) {
|
||||
iovecs := bytes2iovec(iovs)
|
||||
n, err = readv(fd, iovecs)
|
||||
readvRacedetect(iovecs, n, err)
|
||||
return n, err
|
||||
}
|
||||
|
||||
func Preadv(fd int, iovs [][]byte, offset int64) (n int, err error) {
|
||||
iovecs := bytes2iovec(iovs)
|
||||
lo, hi := offs2lohi(offset)
|
||||
n, err = preadv(fd, iovecs, lo, hi)
|
||||
readvRacedetect(iovecs, n, err)
|
||||
return n, err
|
||||
}
|
||||
|
||||
func Preadv2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error) {
|
||||
iovecs := bytes2iovec(iovs)
|
||||
lo, hi := offs2lohi(offset)
|
||||
n, err = preadv2(fd, iovecs, lo, hi, flags)
|
||||
readvRacedetect(iovecs, n, err)
|
||||
return n, err
|
||||
}
|
||||
|
||||
func readvRacedetect(iovecs []Iovec, n int, err error) {
|
||||
if !raceenabled {
|
||||
return
|
||||
}
|
||||
for i := 0; n > 0 && i < len(iovecs); i++ {
|
||||
m := int(iovecs[i].Len)
|
||||
if m > n {
|
||||
m = n
|
||||
}
|
||||
n -= m
|
||||
if m > 0 {
|
||||
raceWriteRange(unsafe.Pointer(iovecs[i].Base), m)
|
||||
}
|
||||
}
|
||||
if err == nil {
|
||||
raceAcquire(unsafe.Pointer(&ioSync))
|
||||
}
|
||||
}
|
||||
|
||||
func Writev(fd int, iovs [][]byte) (n int, err error) {
|
||||
iovecs := bytes2iovec(iovs)
|
||||
if raceenabled {
|
||||
raceReleaseMerge(unsafe.Pointer(&ioSync))
|
||||
}
|
||||
n, err = writev(fd, iovecs)
|
||||
writevRacedetect(iovecs, n)
|
||||
return n, err
|
||||
}
|
||||
|
||||
func Pwritev(fd int, iovs [][]byte, offset int64) (n int, err error) {
|
||||
iovecs := bytes2iovec(iovs)
|
||||
if raceenabled {
|
||||
raceReleaseMerge(unsafe.Pointer(&ioSync))
|
||||
}
|
||||
lo, hi := offs2lohi(offset)
|
||||
n, err = pwritev(fd, iovecs, lo, hi)
|
||||
writevRacedetect(iovecs, n)
|
||||
return n, err
|
||||
}
|
||||
|
||||
func Pwritev2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error) {
|
||||
iovecs := bytes2iovec(iovs)
|
||||
if raceenabled {
|
||||
raceReleaseMerge(unsafe.Pointer(&ioSync))
|
||||
}
|
||||
lo, hi := offs2lohi(offset)
|
||||
n, err = pwritev2(fd, iovecs, lo, hi, flags)
|
||||
writevRacedetect(iovecs, n)
|
||||
return n, err
|
||||
}
|
||||
|
||||
func writevRacedetect(iovecs []Iovec, n int) {
|
||||
if !raceenabled {
|
||||
return
|
||||
}
|
||||
for i := 0; n > 0 && i < len(iovecs); i++ {
|
||||
m := int(iovecs[i].Len)
|
||||
if m > n {
|
||||
m = n
|
||||
}
|
||||
n -= m
|
||||
if m > 0 {
|
||||
raceReadRange(unsafe.Pointer(iovecs[i].Base), m)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// mmap varies by architecture; see syscall_linux_*.go.
|
||||
//sys munmap(addr uintptr, length uintptr) (err error)
|
||||
|
|
@ -1708,11 +2106,30 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) {
|
|||
return int(n), nil
|
||||
}
|
||||
|
||||
func isGroupMember(gid int) bool {
|
||||
groups, err := Getgroups()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
for _, g := range groups {
|
||||
if g == gid {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
//sys faccessat(dirfd int, path string, mode uint32) (err error)
|
||||
//sys Faccessat2(dirfd int, path string, mode uint32, flags int) (err error)
|
||||
|
||||
func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
|
||||
if flags & ^(AT_SYMLINK_NOFOLLOW|AT_EACCESS) != 0 {
|
||||
return EINVAL
|
||||
if flags == 0 {
|
||||
return faccessat(dirfd, path, mode)
|
||||
}
|
||||
|
||||
if err := Faccessat2(dirfd, path, mode, flags); err != ENOSYS && err != EPERM {
|
||||
return err
|
||||
}
|
||||
|
||||
// The Linux kernel faccessat system call does not take any flags.
|
||||
|
|
@ -1721,8 +2138,8 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
|
|||
// Because people naturally expect syscall.Faccessat to act
|
||||
// like C faccessat, we do the same.
|
||||
|
||||
if flags == 0 {
|
||||
return faccessat(dirfd, path, mode)
|
||||
if flags & ^(AT_SYMLINK_NOFOLLOW|AT_EACCESS) != 0 {
|
||||
return EINVAL
|
||||
}
|
||||
|
||||
var st Stat_t
|
||||
|
|
@ -1765,7 +2182,7 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
|
|||
gid = Getgid()
|
||||
}
|
||||
|
||||
if uint32(gid) == st.Gid {
|
||||
if uint32(gid) == st.Gid || isGroupMember(gid) {
|
||||
fmode = (st.Mode >> 3) & 7
|
||||
} else {
|
||||
fmode = st.Mode & 7
|
||||
|
|
@ -1866,6 +2283,18 @@ func Klogset(typ int, arg int) (err error) {
|
|||
return nil
|
||||
}
|
||||
|
||||
// RemoteIovec is Iovec with the pointer replaced with an integer.
|
||||
// It is used for ProcessVMReadv and ProcessVMWritev, where the pointer
|
||||
// refers to a location in a different process' address space, which
|
||||
// would confuse the Go garbage collector.
|
||||
type RemoteIovec struct {
|
||||
Base uintptr
|
||||
Len int
|
||||
}
|
||||
|
||||
//sys ProcessVMReadv(pid int, localIov []Iovec, remoteIov []RemoteIovec, flags uint) (n int, err error) = SYS_PROCESS_VM_READV
|
||||
//sys ProcessVMWritev(pid int, localIov []Iovec, remoteIov []RemoteIovec, flags uint) (n int, err error) = SYS_PROCESS_VM_WRITEV
|
||||
|
||||
/*
|
||||
* Unimplemented
|
||||
*/
|
||||
|
|
@ -1960,7 +2389,6 @@ func Klogset(typ int, arg int) (err error) {
|
|||
// TimerGetoverrun
|
||||
// TimerGettime
|
||||
// TimerSettime
|
||||
// Timerfd
|
||||
// Tkill (obsolete)
|
||||
// Tuxcall
|
||||
// Umount2
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue