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|
-- ioctls, filling in as needed
-- note there are some architecture dependent values
local require, error, assert, tonumber, tostring,
setmetatable, pairs, ipairs, unpack, rawget, rawset,
pcall, type, table, string =
require, error, assert, tonumber, tostring,
setmetatable, pairs, ipairs, unpack, rawget, rawset,
pcall, type, table, string
local function init(types)
local abi = require "syscall.abi"
local s, t = types.s, types.t
local strflag = require "syscall.helpers".strflag
local arch = require("syscall.linux." .. abi.arch .. ".ioctl")
local bit = require "syscall.bit"
local band = bit.band
local function bor(...)
local r = bit.bor(...)
if r < 0 then r = r + 4294967296 end -- TODO see note in NetBSD
return r
end
local lshift = bit.lshift
local rshift = bit.rshift
-- these can vary by architecture
local IOC = arch.IOC or {
SIZEBITS = 14,
DIRBITS = 2,
NONE = 0,
WRITE = 1,
READ = 2,
}
IOC.READWRITE = IOC.READ + IOC.WRITE
IOC.NRBITS = 8
IOC.TYPEBITS = 8
IOC.NRMASK = lshift(1, IOC.NRBITS) - 1
IOC.TYPEMASK = lshift(1, IOC.TYPEBITS) - 1
IOC.SIZEMASK = lshift(1, IOC.SIZEBITS) - 1
IOC.DIRMASK = lshift(1, IOC.DIRBITS) - 1
IOC.NRSHIFT = 0
IOC.TYPESHIFT = IOC.NRSHIFT + IOC.NRBITS
IOC.SIZESHIFT = IOC.TYPESHIFT + IOC.TYPEBITS
IOC.DIRSHIFT = IOC.SIZESHIFT + IOC.SIZEBITS
local function ioc(dir, ch, nr, size)
if type(ch) == "string" then ch = ch:byte() end
return bor(lshift(dir, IOC.DIRSHIFT),
lshift(ch, IOC.TYPESHIFT),
lshift(nr, IOC.NRSHIFT),
lshift(size, IOC.SIZESHIFT))
end
local singletonmap = {
int = "int1",
char = "char1",
uint = "uint1",
uint32 = "uint32_1",
uint64 = "uint64_1",
}
local function _IOC(dir, ch, nr, tp)
if not tp or type(tp) == "number" then return ioc(dir, ch, nr, tp or 0) end
local size = s[tp]
local singleton = singletonmap[tp] ~= nil
tp = singletonmap[tp] or tp
return {number = ioc(dir, ch, nr, size),
read = dir == IOC.READ or dir == IOC.READWRITE, write = dir == IOC.WRITE or dir == IOC.READWRITE,
type = t[tp], singleton = singleton}
end
-- used to create numbers
local _IO = function(ch, nr) return _IOC(IOC.NONE, ch, nr, 0) end
local _IOR = function(ch, nr, tp) return _IOC(IOC.READ, ch, nr, tp) end
local _IOW = function(ch, nr, tp) return _IOC(IOC.WRITE, ch, nr, tp) end
local _IOWR = function(ch, nr, tp) return _IOC(IOC.READWRITE, ch, nr, tp) end
-- used to decode ioctl numbers..
local _IOC_DIR = function(nr) return band(rshift(nr, IOC.DIRSHIFT), IOC.DIRMASK) end
local _IOC_TYPE = function(nr) return band(rshift(nr, IOC.TYPESHIFT), IOC.TYPEMASK) end
local _IOC_NR = function(nr) return band(rshift(nr, IOC.NRSHIFT), IOC.NRMASK) end
local _IOC_SIZE = function(nr) return band(rshift(nr, IOC.SIZESHIFT), IOC.SIZEMASK) end
-- ...and for the drivers/sound files...
IOC.IN = lshift(IOC.WRITE, IOC.DIRSHIFT)
IOC.OUT = lshift(IOC.READ, IOC.DIRSHIFT)
IOC.INOUT = lshift(bor(IOC.WRITE, IOC.READ), IOC.DIRSHIFT)
local IOCSIZE_MASK = lshift(IOC.SIZEMASK, IOC.SIZESHIFT)
local IOCSIZE_SHIFT = IOC.SIZESHIFT
-- VFIO driver writer decided not to use standard IOR/IOW alas
local function vfio(dir, nr, tp)
local ch = ";"
nr = nr + 100 -- vfio base
dir = IOC[string.upper(dir)]
local io = _IOC(dir, ch, nr, tp)
if type(io) == "number" then return io end -- if just IO, not return
io.number = ioc(IOC.NONE, ch, nr, 0) -- number encode nothing, but we want to know anyway
return io
end
local ioctl = strflag {
-- termios, non standard values generally 0x54 = 'T'
TCGETS = {number = 0x5401, read = true, type = "termios"},
TCSETS = 0x5402,
TCSETSW = 0x5403,
TCSETSF = 0x5404,
TCSBRK = 0x5409, -- takes literal number
TCXONC = 0x540A,
TCFLSH = 0x540B, -- takes literal number
TIOCEXCL = 0x540C,
TIOCNXCL = 0x540D,
TIOCSCTTY = 0x540E,
TIOCGPGRP = 0x540F,
TIOCSPGRP = 0x5410,
TIOCOUTQ = 0x5411,
TIOCSTI = 0x5412,
TIOCGWINSZ = {number = 0x5413, read = true, type = "winsize"},
TIOCSWINSZ = {number = 0x5414, write = true, type = "winsize"},
TIOCMGET = 0x5415,
TIOCMBIS = 0x5416,
TIOCMBIC = 0x5417,
TIOCMSET = 0x5418,
TIOCGSOFTCAR = 0x5419,
TIOCSSOFTCAR = 0x541A,
FIONREAD = 0x541B,
TIOCLINUX = 0x541C,
TIOCCONS = 0x541D,
TIOCGSERIAL = 0x541E,
TIOCSSERIAL = 0x541F,
TIOCPKT = 0x5420,
FIONBIO = 0x5421,
TIOCNOTTY = 0x5422,
TIOCSETD = 0x5423,
TIOCGETD = 0x5424,
TCSBRKP = 0x5425,
TIOCSBRK = 0x5427,
TIOCCBRK = 0x5428,
TIOCGSID = 0x5429,
TCGETS2 = _IOR('T', 0x2A, "termios2"),
TCSETS2 = _IOW('T', 0x2B, "termios2"),
TCSETSW2 = _IOW('T', 0x2C, "termios2"),
TCSETSF2 = _IOW('T', 0x2D, "termios2"),
TIOCGPTN = _IOR('T', 0x30, "uint"),
TIOCSPTLCK = _IOW('T', 0x31, "int"),
TIOCGDEV = _IOR('T', 0x32, "uint"),
TCGETX = 0x5432,
TCSETX = 0x5433,
TCSETXF = 0x5434,
TCSETXW = 0x5435,
TIOCSIG = _IOW('T', 0x36, "int"),
TIOCVHANGUP = 0x5437,
FIONCLEX = 0x5450,
FIOCLEX = 0x5451,
FIOASYNC = 0x5452,
TIOCSERCONFIG = 0x5453,
TIOCSERGWILD = 0x5454,
TIOCSERSWILD = 0x5455,
TIOCGLCKTRMIOS = 0x5456,
TIOCSLCKTRMIOS = 0x5457,
TIOCSERGSTRUCT = 0x5458,
TIOCSERGETLSR = 0x5459,
TIOCSERGETMULTI = 0x545A,
TIOCSERSETMULTI = 0x545B,
TIOCMIWAIT = 0x545C,
TIOCGICOUNT = 0x545D,
FIOQSIZE = 0x5460,
-- socket ioctls from linux/sockios.h - for many of these you can use netlink instead
FIOSETOWN = 0x8901,
SIOCSPGRP = 0x8902,
FIOGETOWN = 0x8903,
SIOCGPGRP = 0x8904,
SIOCATMARK = 0x8905,
SIOCGSTAMP = 0x8906,
SIOCGSTAMPNS = 0x8907,
SIOCADDRT = 0x890B,
SIOCDELRT = 0x890C,
SIOCRTMSG = 0x890D,
SIOCGIFINDEX = 0x8933,
SIOCDARP = 0x8953,
SIOCGARP = 0x8954,
SIOCSARP = 0x8955,
SIOCBRADDBR = 0x89a0,
SIOCBRDELBR = 0x89a1,
SIOCBRADDIF = 0x89a2,
SIOCBRDELIF = 0x89a3,
-- event system
EVIOCGVERSION = _IOR('E', 0x01, "int"),
EVIOCGID = _IOR('E', 0x02, "input_id"),
EVIOCGREP = _IOR('E', 0x03, "uint2"),
EVIOCSREP = _IOW('E', 0x03, "uint2"),
EVIOCGKEYCODE = _IOR('E', 0x04, "uint2"),
EVIOCGKEYCODE_V2 = _IOR('E', 0x04, "input_keymap_entry"),
EVIOCSKEYCODE = _IOW('E', 0x04, "uint2"),
EVIOCSKEYCODE_V2 = _IOW('E', 0x04, "input_keymap_entry"),
EVIOCGNAME = function(len) return _IOC(IOC.READ, 'E', 0x06, len) end,
EVIOCGPHYS = function(len) return _IOC(IOC.READ, 'E', 0x07, len) end,
EVIOCGUNIQ = function(len) return _IOC(IOC.READ, 'E', 0x08, len) end,
EVIOCGPROP = function(len) return _IOC(IOC.READ, 'E', 0x09, len) end,
EVIOCGKEY = function(len) return _IOC(IOC.READ, 'E', 0x18, len) end,
EVIOCGLED = function(len) return _IOC(IOC.READ, 'E', 0x19, len) end,
EVIOCGSND = function(len) return _IOC(IOC.READ, 'E', 0x1a, len) end,
EVIOCGSW = function(len) return _IOC(IOC.READ, 'E', 0x1b, len) end,
EVIOCGBIT = function(ev, len) return _IOC(IOC.READ, 'E', 0x20 + ev, len) end,
EVIOCGABS = function(abs) return _IOR('E', 0x40 + abs, "input_absinfo") end,
EVIOCSABS = function(abs) return _IOW('E', 0xc0 + abs, "input_absinfo") end,
EVIOCSFF = _IOC(IOC.WRITE, 'E', 0x80, "ff_effect"),
EVIOCRMFF = _IOW('E', 0x81, "int"),
EVIOCGEFFECTS = _IOR('E', 0x84, "int"),
EVIOCGRAB = _IOW('E', 0x90, "int"),
-- input devices
UI_DEV_CREATE = _IO ('U', 1),
UI_DEV_DESTROY = _IO ('U', 2),
UI_SET_EVBIT = _IOW('U', 100, "int"),
UI_SET_KEYBIT = _IOW('U', 101, "int"),
-- tun/tap
TUNSETNOCSUM = _IOW('T', 200, "int"),
TUNSETDEBUG = _IOW('T', 201, "int"),
TUNSETIFF = _IOW('T', 202, "int"),
TUNSETPERSIST = _IOW('T', 203, "int"),
TUNSETOWNER = _IOW('T', 204, "int"),
TUNSETLINK = _IOW('T', 205, "int"),
TUNSETGROUP = _IOW('T', 206, "int"),
TUNGETFEATURES = _IOR('T', 207, "uint"),
TUNSETOFFLOAD = _IOW('T', 208, "uint"),
TUNSETTXFILTER = _IOW('T', 209, "uint"),
TUNGETIFF = _IOR('T', 210, "uint"),
TUNGETSNDBUF = _IOR('T', 211, "int"),
TUNSETSNDBUF = _IOW('T', 212, "int"),
TUNATTACHFILTER= _IOW('T', 213, "sock_fprog"),
TUNDETACHFILTER= _IOW('T', 214, "sock_fprog"),
TUNGETVNETHDRSZ= _IOR('T', 215, "int"),
TUNSETVNETHDRSZ= _IOW('T', 216, "int"),
TUNSETQUEUE = _IOW('T', 217, "int"),
-- from linux/vhost.h VHOST_VIRTIO 0xAF
VHOST_GET_FEATURES = _IOR(0xAF, 0x00, "uint64"),
VHOST_SET_FEATURES = _IOW(0xAF, 0x00, "uint64"),
VHOST_SET_OWNER = _IO(0xAF, 0x01),
VHOST_RESET_OWNER = _IO(0xAF, 0x02),
VHOST_SET_MEM_TABLE = _IOW(0xAF, 0x03, "vhost_memory"),
VHOST_SET_LOG_BASE = _IOW(0xAF, 0x04, "uint64"),
VHOST_SET_LOG_FD = _IOW(0xAF, 0x07, "int"),
VHOST_SET_VRING_NUM = _IOW(0xAF, 0x10, "vhost_vring_state"),
VHOST_SET_VRING_ADDR = _IOW(0xAF, 0x11, "vhost_vring_addr"),
VHOST_SET_VRING_BASE = _IOW(0xAF, 0x12, "vhost_vring_state"),
VHOST_GET_VRING_BASE = _IOWR(0xAF, 0x12, "vhost_vring_state"),
VHOST_SET_VRING_KICK = _IOW(0xAF, 0x20, "vhost_vring_file"),
VHOST_SET_VRING_CALL = _IOW(0xAF, 0x21, "vhost_vring_file"),
VHOST_SET_VRING_ERR = _IOW(0xAF, 0x22, "vhost_vring_file"),
VHOST_NET_SET_BACKEND= _IOW(0xAF, 0x30, "vhost_vring_file"),
-- from linux/vfio.h type is ';' base is 100
VFIO_GET_API_VERSION = vfio('NONE', 0),
VFIO_CHECK_EXTENSION = vfio('WRITE', 1, "uint32"),
-- from linux/perf_event.h
PERF_EVENT_IOC_ENABLE = _IO('$', 0),
PERF_EVENT_IOC_DISABLE = _IO('$', 1),
PERF_EVENT_IOC_REFRESH = _IO('$', 2),
PERF_EVENT_IOC_RESET = _IO('$', 3),
PERF_EVENT_IOC_PERIOD = _IOW('$', 4, "uint64"),
PERF_EVENT_IOC_SET_OUTPUT= _IO('$', 5),
PERF_EVENT_IOC_SET_FILTER= _IOW('$', 6, "uintptr"),
PERF_EVENT_IOC_ID = _IOR('$', 7, "uint64_1"),
PERF_EVENT_IOC_SET_BPF = _IOW('$', 8, "uint32"),
-- allow user defined ioctls
_IO = _IO,
_IOR = _IOR,
_IOW = _IOW,
_IOWR = _IOWR,
}
local override = arch.ioctl or {}
if type(override) == "function" then override = override(_IO, _IOR, _IOW, _IOWR) end
for k, v in pairs(override) do ioctl[k] = v end
-- allow names for types in table ioctls
for k, v in pairs(ioctl) do if type(v) == "table" and type(v.type) == "string" then v.type = t[v.type] end end
-- alternate names
ioctl.TIOCINQ = ioctl.FIONREAD
return ioctl
end
return {init = init}
|
