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Diffstat (limited to '')
-rw-r--r-- | dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/ioctl_linux.go | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/ioctl_linux.go b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/ioctl_linux.go new file mode 100644 index 0000000..0d12c08 --- /dev/null +++ b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/ioctl_linux.go @@ -0,0 +1,233 @@ +// Copyright 2021 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. + +package unix + +import "unsafe" + +// IoctlRetInt performs an ioctl operation specified by req on a device +// associated with opened file descriptor fd, and returns a non-negative +// integer that is returned by the ioctl syscall. +func IoctlRetInt(fd int, req uint) (int, error) { + ret, _, err := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), 0) + if err != 0 { + return 0, err + } + return int(ret), nil +} + +func IoctlGetUint32(fd int, req uint) (uint32, error) { + var value uint32 + err := ioctlPtr(fd, req, unsafe.Pointer(&value)) + return value, err +} + +func IoctlGetRTCTime(fd int) (*RTCTime, error) { + var value RTCTime + err := ioctlPtr(fd, RTC_RD_TIME, unsafe.Pointer(&value)) + return &value, err +} + +func IoctlSetRTCTime(fd int, value *RTCTime) error { + return ioctlPtr(fd, RTC_SET_TIME, unsafe.Pointer(value)) +} + +func IoctlGetRTCWkAlrm(fd int) (*RTCWkAlrm, error) { + var value RTCWkAlrm + err := ioctlPtr(fd, RTC_WKALM_RD, unsafe.Pointer(&value)) + return &value, err +} + +func IoctlSetRTCWkAlrm(fd int, value *RTCWkAlrm) error { + return ioctlPtr(fd, RTC_WKALM_SET, unsafe.Pointer(value)) +} + +// IoctlGetEthtoolDrvinfo fetches ethtool driver information for the network +// device specified by ifname. +func IoctlGetEthtoolDrvinfo(fd int, ifname string) (*EthtoolDrvinfo, error) { + ifr, err := NewIfreq(ifname) + if err != nil { + return nil, err + } + + value := EthtoolDrvinfo{Cmd: ETHTOOL_GDRVINFO} + ifrd := ifr.withData(unsafe.Pointer(&value)) + + err = ioctlIfreqData(fd, SIOCETHTOOL, &ifrd) + return &value, err +} + +// IoctlGetWatchdogInfo fetches information about a watchdog device from the +// Linux watchdog API. For more information, see: +// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html. +func IoctlGetWatchdogInfo(fd int) (*WatchdogInfo, error) { + var value WatchdogInfo + err := ioctlPtr(fd, WDIOC_GETSUPPORT, unsafe.Pointer(&value)) + return &value, err +} + +// IoctlWatchdogKeepalive issues a keepalive ioctl to a watchdog device. For +// more information, see: +// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html. +func IoctlWatchdogKeepalive(fd int) error { + // arg is ignored and not a pointer, so ioctl is fine instead of ioctlPtr. + return ioctl(fd, WDIOC_KEEPALIVE, 0) +} + +// IoctlFileCloneRange performs an FICLONERANGE ioctl operation to clone the +// range of data conveyed in value to the file associated with the file +// descriptor destFd. See the ioctl_ficlonerange(2) man page for details. +func IoctlFileCloneRange(destFd int, value *FileCloneRange) error { + return ioctlPtr(destFd, FICLONERANGE, unsafe.Pointer(value)) +} + +// IoctlFileClone performs an FICLONE ioctl operation to clone the entire file +// associated with the file description srcFd to the file associated with the +// file descriptor destFd. See the ioctl_ficlone(2) man page for details. +func IoctlFileClone(destFd, srcFd int) error { + return ioctl(destFd, FICLONE, uintptr(srcFd)) +} + +type FileDedupeRange struct { + Src_offset uint64 + Src_length uint64 + Reserved1 uint16 + Reserved2 uint32 + Info []FileDedupeRangeInfo +} + +type FileDedupeRangeInfo struct { + Dest_fd int64 + Dest_offset uint64 + Bytes_deduped uint64 + Status int32 + Reserved uint32 +} + +// IoctlFileDedupeRange performs an FIDEDUPERANGE ioctl operation to share the +// range of data conveyed in value from the file associated with the file +// descriptor srcFd to the value.Info destinations. See the +// ioctl_fideduperange(2) man page for details. +func IoctlFileDedupeRange(srcFd int, value *FileDedupeRange) error { + buf := make([]byte, SizeofRawFileDedupeRange+ + len(value.Info)*SizeofRawFileDedupeRangeInfo) + rawrange := (*RawFileDedupeRange)(unsafe.Pointer(&buf[0])) + rawrange.Src_offset = value.Src_offset + rawrange.Src_length = value.Src_length + rawrange.Dest_count = uint16(len(value.Info)) + rawrange.Reserved1 = value.Reserved1 + rawrange.Reserved2 = value.Reserved2 + + for i := range value.Info { + rawinfo := (*RawFileDedupeRangeInfo)(unsafe.Pointer( + uintptr(unsafe.Pointer(&buf[0])) + uintptr(SizeofRawFileDedupeRange) + + uintptr(i*SizeofRawFileDedupeRangeInfo))) + rawinfo.Dest_fd = value.Info[i].Dest_fd + rawinfo.Dest_offset = value.Info[i].Dest_offset + rawinfo.Bytes_deduped = value.Info[i].Bytes_deduped + rawinfo.Status = value.Info[i].Status + rawinfo.Reserved = value.Info[i].Reserved + } + + err := ioctlPtr(srcFd, FIDEDUPERANGE, unsafe.Pointer(&buf[0])) + + // Output + for i := range value.Info { + rawinfo := (*RawFileDedupeRangeInfo)(unsafe.Pointer( + uintptr(unsafe.Pointer(&buf[0])) + uintptr(SizeofRawFileDedupeRange) + + uintptr(i*SizeofRawFileDedupeRangeInfo))) + value.Info[i].Dest_fd = rawinfo.Dest_fd + value.Info[i].Dest_offset = rawinfo.Dest_offset + value.Info[i].Bytes_deduped = rawinfo.Bytes_deduped + value.Info[i].Status = rawinfo.Status + value.Info[i].Reserved = rawinfo.Reserved + } + + return err +} + +func IoctlHIDGetDesc(fd int, value *HIDRawReportDescriptor) error { + return ioctlPtr(fd, HIDIOCGRDESC, unsafe.Pointer(value)) +} + +func IoctlHIDGetRawInfo(fd int) (*HIDRawDevInfo, error) { + var value HIDRawDevInfo + err := ioctlPtr(fd, HIDIOCGRAWINFO, unsafe.Pointer(&value)) + return &value, err +} + +func IoctlHIDGetRawName(fd int) (string, error) { + var value [_HIDIOCGRAWNAME_LEN]byte + err := ioctlPtr(fd, _HIDIOCGRAWNAME, unsafe.Pointer(&value[0])) + return ByteSliceToString(value[:]), err +} + +func IoctlHIDGetRawPhys(fd int) (string, error) { + var value [_HIDIOCGRAWPHYS_LEN]byte + err := ioctlPtr(fd, _HIDIOCGRAWPHYS, unsafe.Pointer(&value[0])) + return ByteSliceToString(value[:]), err +} + +func IoctlHIDGetRawUniq(fd int) (string, error) { + var value [_HIDIOCGRAWUNIQ_LEN]byte + err := ioctlPtr(fd, _HIDIOCGRAWUNIQ, unsafe.Pointer(&value[0])) + return ByteSliceToString(value[:]), err +} + +// IoctlIfreq performs an ioctl using an Ifreq structure for input and/or +// output. See the netdevice(7) man page for details. +func IoctlIfreq(fd int, req uint, value *Ifreq) error { + // It is possible we will add more fields to *Ifreq itself later to prevent + // misuse, so pass the raw *ifreq directly. + return ioctlPtr(fd, req, unsafe.Pointer(&value.raw)) +} + +// TODO(mdlayher): export if and when IfreqData is exported. + +// ioctlIfreqData performs an ioctl using an ifreqData structure for input +// and/or output. See the netdevice(7) man page for details. +func ioctlIfreqData(fd int, req uint, value *ifreqData) error { + // The memory layout of IfreqData (type-safe) and ifreq (not type-safe) are + // identical so pass *IfreqData directly. + return ioctlPtr(fd, req, unsafe.Pointer(value)) +} + +// IoctlKCMClone attaches a new file descriptor to a multiplexor by cloning an +// existing KCM socket, returning a structure containing the file descriptor of +// the new socket. +func IoctlKCMClone(fd int) (*KCMClone, error) { + var info KCMClone + if err := ioctlPtr(fd, SIOCKCMCLONE, unsafe.Pointer(&info)); err != nil { + return nil, err + } + + return &info, nil +} + +// IoctlKCMAttach attaches a TCP socket and associated BPF program file +// descriptor to a multiplexor. +func IoctlKCMAttach(fd int, info KCMAttach) error { + return ioctlPtr(fd, SIOCKCMATTACH, unsafe.Pointer(&info)) +} + +// IoctlKCMUnattach unattaches a TCP socket file descriptor from a multiplexor. +func IoctlKCMUnattach(fd int, info KCMUnattach) error { + return ioctlPtr(fd, SIOCKCMUNATTACH, unsafe.Pointer(&info)) +} + +// IoctlLoopGetStatus64 gets the status of the loop device associated with the +// file descriptor fd using the LOOP_GET_STATUS64 operation. +func IoctlLoopGetStatus64(fd int) (*LoopInfo64, error) { + var value LoopInfo64 + if err := ioctlPtr(fd, LOOP_GET_STATUS64, unsafe.Pointer(&value)); err != nil { + return nil, err + } + return &value, nil +} + +// IoctlLoopSetStatus64 sets the status of the loop device associated with the +// file descriptor fd using the LOOP_SET_STATUS64 operation. +func IoctlLoopSetStatus64(fd int, value *LoopInfo64) error { + return ioctlPtr(fd, LOOP_SET_STATUS64, unsafe.Pointer(value)) +} |