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Add more ioctl macros to abi/linux, and export existing ones.

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PiperOrigin-RevId: 529761511
This commit is contained in:
Jamie Liu
2023-05-05 11:02:42 -07:00
committed by gVisor bot
parent 153f0217e6
commit 05deaf0b0c
2 changed files with 53 additions and 21 deletions
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pkg/abi/linux/ioctl.go
+51 -19
View File
@@ -95,43 +95,75 @@ const (
// ioctl(2) directions. Used to calculate requests number.
// Constants from asm-generic/ioctl.h.
const (
_IOC_NONE = 0
_IOC_WRITE = 1
_IOC_READ = 2
IOC_NONE = 0
IOC_WRITE = 1
IOC_READ = 2
)
// Constants from asm-generic/ioctl.h.
const (
_IOC_NRBITS = 8
_IOC_TYPEBITS = 8
_IOC_SIZEBITS = 14
_IOC_DIRBITS = 2
IOC_NRBITS = 8
IOC_TYPEBITS = 8
IOC_SIZEBITS = 14
IOC_DIRBITS = 2
_IOC_NRSHIFT = 0
_IOC_TYPESHIFT = _IOC_NRSHIFT + _IOC_NRBITS
_IOC_SIZESHIFT = _IOC_TYPESHIFT + _IOC_TYPEBITS
_IOC_DIRSHIFT = _IOC_SIZESHIFT + _IOC_SIZEBITS
IOC_NRSHIFT = 0
IOC_TYPESHIFT = IOC_NRSHIFT + IOC_NRBITS
IOC_SIZESHIFT = IOC_TYPESHIFT + IOC_TYPEBITS
IOC_DIRSHIFT = IOC_SIZESHIFT + IOC_SIZEBITS
)
// IOC outputs the result of _IOC macro in asm-generic/ioctl.h.
// IOC outputs the result of _IOC macro in include/uapi/asm-generic/ioctl.h.
func IOC(dir, typ, nr, size uint32) uint32 {
return uint32(dir)<<_IOC_DIRSHIFT | typ<<_IOC_TYPESHIFT | nr<<_IOC_NRSHIFT | size<<_IOC_SIZESHIFT
return uint32(dir)<<IOC_DIRSHIFT | typ<<IOC_TYPESHIFT | nr<<IOC_NRSHIFT | size<<IOC_SIZESHIFT
}
// Kcov ioctls from kernel/kcov.h.
// IO outputs the result of _IO macro in include/uapi/asm-generic/ioctl.h.
func IO(typ, nr uint32) uint32 {
return IOC(IOC_NONE, typ, nr, 0)
}
// IOR outputs the result of _IOR macro in include/uapi/asm-generic/ioctl.h.
func IOR(typ, nr, size uint32) uint32 {
return IOC(IOC_READ, typ, nr, size)
}
// IOW outputs the result of _IOW macro in include/uapi/asm-generic/ioctl.h.
func IOW(typ, nr, size uint32) uint32 {
return IOC(IOC_WRITE, typ, nr, size)
}
// IOWR outputs the result of _IOWR macro in include/uapi/asm-generic/ioctl.h.
func IOWR(typ, nr, size uint32) uint32 {
return IOC(IOC_READ|IOC_WRITE, typ, nr, size)
}
// IOC_NR outputs the result of IOC_NR macro in
// include/uapi/asm-generic/ioctl.h.
func IOC_NR(nr uint32) uint32 {
return (nr >> IOC_NRSHIFT) & ((1 << IOC_NRBITS) - 1)
}
// IOC_SIZE outputs the result of IOC_SIZE macro in
// include/uapi/asm-generic/ioctl.h.
func IOC_SIZE(nr uint32) uint32 {
return (nr >> IOC_SIZESHIFT) & ((1 << IOC_SIZEBITS) - 1)
}
// Kcov ioctls from include/uapi/linux/kcov.h.
var (
KCOV_INIT_TRACE = IOC(_IOC_READ, 'c', 1, 8)
KCOV_ENABLE = IOC(_IOC_NONE, 'c', 100, 0)
KCOV_DISABLE = IOC(_IOC_NONE, 'c', 101, 0)
KCOV_INIT_TRACE = IOR('c', 1, 8)
KCOV_ENABLE = IO('c', 100)
KCOV_DISABLE = IO('c', 101)
)
// Kcov trace types from kernel/kcov.h.
// Kcov trace types from include/uapi/linux/kcov.h.
const (
KCOV_TRACE_PC = 0
KCOV_TRACE_CMP = 1
)
// Kcov state constants from kernel/kcov.h.
// Kcov state constants from include/uapi/linux/kcov.h.
const (
KCOV_MODE_DISABLED = 0
KCOV_MODE_INIT = 1
pkg/abi/linux/ioctl_tun.go
+2 -2
View File
@@ -16,8 +16,8 @@ package linux
// ioctl(2) request numbers from linux/if_tun.h
var (
TUNSETIFF = IOC(_IOC_WRITE, 'T', 202, 4)
TUNGETIFF = IOC(_IOC_READ, 'T', 210, 4)
TUNSETIFF = IOW('T', 202, 4)
TUNGETIFF = IOR('T', 210, 4)
)
// Flags from net/if_tun.h