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import sys
import os
import operator
if len(sys.argv) != 2:
sys.stderr.write("Wrong number of argmuments. Wanted one, the name of the\
arch to use, got %s" % sys.argv)
arch = sys.argv[1]
f = open(os.path.join(arch, 'ioctl_list')) # found by find_ioctls.py
m = open(os.path.join(arch, 'manually_found')) # found by the Mach V Eyeball
i = open(os.path.join(arch, 'ignore_list')) # removed from the output of find_ioctls.py
print("// Initially generated by process_ioctls.py")
consts = {
"mips": { "NONE": 1, "READ": 2, "WRITE": 4, "SIZEBITS": 13, "DIRBITS": 3},
"powerpc": { "NONE": 1, "READ": 2, "WRITE": 4, "SIZEBITS": 13, "DIRBITS": 3},
"x86": { "NONE": 0, "READ": 2, "WRITE": 1, "SIZEBITS": 14, "DIRBITS": 2},
"x86_64": { "NONE": 0, "READ": 2, "WRITE": 1, "SIZEBITS": 14, "DIRBITS": 2},
"arm": { "NONE": 0, "READ": 2, "WRITE": 1, "SIZEBITS": 14, "DIRBITS": 2},
"aarch64": { "NONE": 0, "READ": 2, "WRITE": 1, "SIZEBITS": 14, "DIRBITS": 2},
}
ioc_consts = {
"SIOCPROTOPRIVATE": 0x89E0,
"SIOCDEVPRIVATE": 0x89F0,
"PCIIOC_BASE": (ord('P') << 24 | ord('C') << 16 | ord('I') << 8),
"FIONREAD": 0x541B,
"CZIOC": ord('M') << 8,
"TIOCOUTQ": 0x5411,
"TIOCM_CAR": 0x040,
"TIOCM_RNG": 0x080,
}
NONE = consts[arch]["NONE"]
READ = consts[arch]["READ"]
WRITE = consts[arch]["WRITE"]
SIZEBITS = consts[arch]["SIZEBITS"]
DIRBITS = consts[arch]["DIRBITS"]
NRBITS = 8
TYPEBITS = 8
NRSHIFT = 0
TYPESHIFT = NRSHIFT + NRBITS
SIZESHIFT = TYPESHIFT + SIZEBITS
DIRSHIFT = SIZESHIFT + DIRBITS
NRMASK = (1 << NRBITS) - 1
TYPEMASK = (1 << TYPEBITS) - 1
SIZEMASK = (1 << SIZEBITS) - 1
DIRMASK = (1 << DIRBITS) - 1
def decode(val):
return (((val >> DIRSHIFT) & DIRMASK), ((val >> TYPESHIFT) & TYPEMASK),
((val >> NRSHIFT) & NRMASK), ((val >> SIZESHIFT) & SIZEMASK))
ioctls = [] # ones we want to actually process
for ioctl in f:
ioctls.append(eval(ioctl))
for ioctl in m:
ioctls.append(eval(ioctl))
mp = { "_IO": "none", "_IOR": "read", "_IOW": "write", "_IOWR": "readwrite",
"DRM_IO": "none", "DRM_IOR": "read", "DRM_IOW": "write", "DRM_IOWR": "readwrite"}
tys = {
"__uint8_t": "u8",
"__uint16": "u16",
"__uint32_t": "u32",
"__uint64_t": "u64",
"__int8_t": "i8",
"__int16": "i16",
"__int32_t": "i32",
"__int64_t": "i64",
"uint8_t": "u8",
"uint16": "u16",
"uint32_t": "u32",
"uint64_t": "u64",
"int8_t": "i8",
"int16": "i16",
"int32_t": "i32",
"int64_t": "i64",
"__u8": "u8",
"__u16": "u16",
"__u32": "u32",
"__u64": "u64",
"__s8": "i8",
"__s16": "i16",
"__s32": "i32",
"__s64": "i64",
"int": "::libc::c_int",
"long": "::libc::c_long",
"char": "::libc::c_char",
"size_t": "::libc::size_t",
}
utys = {
"int": "::libc::c_uint",
"long": "::libc::c_ulong",
"char": "::libc::c_uchar",
}
known_structs = ["input_id", "ff_effect", "ff_trigger", "ff_replay"]
manually_bound = ["EVIOCGNAME", "EVIOCGPHYS", "EVIOCGUNIQ", "EVIOCGPROP",
"EVIOCGMTSLOTS", "EVIOCGKEY", "EVIOCGLED", "EVIOCGSND", "EVIOCGSW",
"EVIOCGBIT", "EVIOCGABS", "EVIOCSABS", "EVIOCGRAB", "EVIOCREVOKE",
"EVIOCSCLOCKID"]
bad_recovery = {}
def translate(ty):
if len(ty) == 1:
return tys.get(ty[0], "FIXME1<%s>" % ty)
elif ty[-1] == '*':
return "*mut " + translate(ty[:-1])
elif len(ty) == 2:
if ty[0] == "struct":
return "/*struct*/ %s" % ty[1]
elif ty[0] == "unsigned":
return utys[ty[1]]
else:
return "FIXME2<%s>" % ty
elif ty[-1] == ']':
count = ty[-2]
return "[%s; %s]" % (translate(ty[:-3]), count)
else:
return "FIXME3<%s>" % ty
def translate_type_code(ty):
if ty[0] == "'":
return "b" + ty
else:
return ty
def bad(name, val):
if name in bad_recovery:
process(bad_recovery[name])
else:
pval = None
try:
pval = int(val, 0)
except:
pass
if pval is None:
print("ioctl!(bad %s with %s);" % (name.lower(), val))
else:
(dr, ty, nr, sz) = decode(pval)
if dr == NONE:
print("ioctl!(none %s with %s, %s);" % (name.lower(), ty, nr))
elif dr == READ:
print("ioctl!(read %s with %s, %s; [u8; %s]);" %
(name.lower(), ty, nr, sz));
elif dr == WRITE:
print("ioctl!(write %s with %s, %s; [u8; %s]);" %
(name.lower(), ty, nr, sz));
elif dr == READ|WRITE:
print("ioctl!(readwrite %s with %s, %s; [u8; %s]);" %
(name.lower(), ty, nr, sz));
else:
raise "This really shouldn't happen"
def bad2(name, val1, val2, op):
if val1 in ioc_consts:
val1 = ioc_consts[val1]
else:
val1 = int(val1, 0)
if val2 in ioc_consts:
val2 = ioc_consts[val2]
else:
val2 = int(val2, 0)
bad(name, str(op(val1, val2)))
def process(ioctl):
name = ioctl[0]
rhs = ioctl[1:-1] # remove '#' or trailing comment
cmd = rhs[0]
body = rhs[2:-1]
if name in manually_bound:
return
elif cmd == "_IO":
print("ioctl!(none %s with %s, %s);" % (name.lower(), translate_type_code(body[0]),
body[2]))
elif cmd == '_IOR' or cmd == '_IOW' or cmd == '_IOWR':
if body[3] == ',':
# this looks like _IOR(X, B, type...)
first = body[0]
second = body[2]
ty = body[4:]
ty = translate(ty)
if "FIXME" in ty or "/*struct*/" in ty and not ty[11:] in known_structs:
print("// ioctl!(%s %s with %s, %s; %s);" % (mp[cmd], name.lower(),
translate_type_code(first), second, ty))
else:
print("ioctl!(%s %s with %s, %s; %s);" % (mp[cmd], name.lower(),
translate_type_code(first), second, ty))
elif body[3] == '+':
first = body[0]
second = " ".join(body[2:5])
ty = body[6:]
ty = translate(ty)
if "FIXME" in ty or "/*struct*/" in ty and not ty[11:] in known_structs:
print("// ioctl!(%s %s with %s, %s; %s);" % (mp[cmd], name.lower(),
translate_type_code(first), second, ty))
else:
print("ioctl!(%s %s with %s, %s; %s);" % (mp[cmd], name.lower(),
translate_type_code(first), second, ty))
# We probably have _IOR(X, B + C, type...)
else:
raise "This really shouldn't happen"
elif cmd == "DRM_IO" or cmd == "DRM_IOR" or cmd == "DRM_IOW" or cmd == "DRM_IOWR":
# rewrite into "canonical" version.
process([name, cmd[3:], "(", "DRM_IOCTL_BASE", ","] + rhs[2:] + ["#"])
elif len(rhs) == 1: # single constant :(
bad(name.lower(), ioc_consts.get(rhs[0], rhs[0]))
elif len(rhs) == 3 and rhs[0] == "(": # single constant in parens
bad(name.lower(), ioc_consts.get(rhs[1], rhs[1]))
elif rhs[2] == "+": # we have the sum of two constants
try:
bad2(name.lower(), rhs[1], rhs[3], operator.add)
except:
bad(name.lower(), " ".join(rhs[1:-1]))
elif rhs[2] == "|": # we have an or of two constants (eugh)
try:
bad2(name.lower(), rhs[1], rhs[3], operator.or_)
except:
bad(name.lower(), " ".join(rhs[1:-1]))
else:
print("// TODO #define %s %s" % (name, " ".join(rhs)))
for ioctl in ioctls:
process(ioctl)
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