blob: e06f9c151e3abb4f0cf79cb10289afe7521e2e8b [file] [log] [blame]
/*
* Copyright (c) 2015 Etienne Gemsa <etienne.gemsa@lse.epita.fr>
* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include <linux/ioctl.h>
#ifdef HAVE_LINUX_INPUT_H
#include <linux/input.h>
#include "xlat/evdev_abs.h"
#include "xlat/evdev_autorepeat.h"
#include "xlat/evdev_ff_status.h"
#include "xlat/evdev_ff_types.h"
#include "xlat/evdev_keycode.h"
#include "xlat/evdev_leds.h"
#include "xlat/evdev_misc.h"
#include "xlat/evdev_mtslots.h"
#include "xlat/evdev_prop.h"
#include "xlat/evdev_relative_axes.h"
#include "xlat/evdev_snd.h"
#include "xlat/evdev_switch.h"
#include "xlat/evdev_sync.h"
#ifndef SYN_MAX
# define SYN_MAX 0xf
#endif
static void
decode_envelope(struct ff_envelope *envelope)
{
tprintf(", envelope={attack_length=%" PRIu16 ", attack_level=%" PRIu16
", fade_length=%" PRIu16 ", fade_level=%" PRIx32 "}",
envelope->attack_length,
envelope->attack_level,
envelope->fade_length,
envelope->fade_level);
}
static int
ff_effect_ioctl(struct tcb *tcp, long arg)
{
struct ff_effect ffe;
if (!verbose(tcp) || umove(tcp, arg, &ffe) < 0)
return 0;
tprints(", {type=");
printxval(evdev_ff_types, ffe.type, "FF_???");
tprintf(", id=%" PRIu16 ", direction=%" PRIu16,
ffe.id, ffe.direction);
if (!abbrev(tcp)) {
tprintf(", trigger={button=%" PRIu16 ", interval=%" PRIu16 "}",
ffe.trigger.button, ffe.trigger.interval);
tprintf(", replay={lenght=%" PRIu16 ", delay=%" PRIu16 "}",
ffe.replay.length, ffe.replay.delay);
switch (ffe.type) {
case FF_CONSTANT:
tprintf(", constant_ef={%" PRIi16,
ffe.u.constant.level);
decode_envelope(&ffe.u.constant.envelope);
tprints("}");
return 1;
case FF_RAMP:
tprintf(", ramp={start_level=%" PRIi16
", end_level=%" PRIi16,
ffe.u.ramp.start_level,
ffe.u.ramp.end_level);
decode_envelope(&ffe.u.ramp.envelope);
tprints("}");
return 1;
case FF_PERIODIC:
tprintf(", periodic_ef={waveform=%" PRIu16
", period=%" PRIu16
", magnitude=%" PRIi16
", offset=%" PRIi16
", phase=%" PRIu16,
ffe.u.periodic.waveform,
ffe.u.periodic.period,
ffe.u.periodic.magnitude,
ffe.u.periodic.offset,
ffe.u.periodic.phase);
decode_envelope(&ffe.u.periodic.envelope);
tprintf(", custom_len=%" PRIu32
", *custom_data=%#lx}",
ffe.u.periodic.custom_len,
(unsigned long)ffe.u.periodic.custom_data);
return 1;
case FF_RUMBLE:
tprintf(", rumble={strong_magnitude=%" PRIu16
", weak_magnitude=%" PRIu16 "}",
ffe.u.rumble.strong_magnitude,
ffe.u.rumble.weak_magnitude);
return 1;
case FF_SPRING:
case FF_FRICTION:
case FF_DAMPER:
case FF_INERTIA:
case FF_CUSTOM:
break;
default :
break;
}
}
tprints(", ...}");
return 1;
}
static int
abs_ioctl(struct tcb *tcp, long arg)
{
struct input_absinfo absinfo;
if (!verbose(tcp) || umove(tcp, arg, &absinfo) < 0)
return 0;
tprintf(", {value=%" PRIu32 ", minimum=%" PRIu32,
absinfo.value, absinfo.minimum);
if (!abbrev(tcp)) {
tprintf(", maximum=%" PRIu32 ", fuzz=%" PRIu32,
absinfo.maximum, absinfo.fuzz);
tprintf(", flat=%" PRIu32, absinfo.flat);
#ifdef HAVE_STRUCT_INPUT_ABSINFO_RESOLUTION
tprintf(", resolution=%" PRIu32, absinfo.resolution);
#endif
tprints("}");
} else {
tprints(", ...}");
}
return 1;
}
static int
keycode_ioctl(struct tcb *tcp, long arg)
{
unsigned int keycode[2];
if (!arg) {
tprints(", NULL");
return 1;
}
if (!verbose(tcp) || umove(tcp, arg, &keycode) < 0)
return 0;
tprintf(", [%u, ", keycode[0]);
printxval(evdev_keycode, keycode[1], "KEY_???");
tprints("]");
return 1;
}
#ifdef EVIOCGKEYCODE_V2
static int
keycode_V2_ioctl(struct tcb *tcp, long arg)
{
struct input_keymap_entry ike;
if (!arg) {
tprints(", NULL");
return 1;
}
if (!verbose(tcp) || umove(tcp, arg, &ike) < 0)
return 0;
tprintf(", {flags=%" PRIu8 ", len=%" PRIu8, ike.flags, ike.len);
if (!abbrev(tcp)) {
unsigned int i;
tprintf(", index=%" PRIu16 ", keycode=", ike.index);
printxval(evdev_keycode, ike.keycode, "KEY_???");
tprints(", scancode=[");
for (i = 0; i < ARRAY_SIZE(ike.scancode); i++) {
if (i > 0)
tprints(", ");
tprintf("%" PRIx8, ike.scancode[i]);
}
tprints("]}");
} else {
tprints(", ...}");
}
return 1;
}
#endif /* EVIOCGKEYCODE_V2 */
static int
getid_ioctl(struct tcb *tcp, long arg)
{
struct input_id id;
if (!verbose(tcp) || umove(tcp, arg, &id) < 0)
return 0;
tprintf(", {ID_BUS=%" PRIu16 ", ID_VENDOR=%" PRIu16,
id.bustype, id.vendor);
if (!abbrev(tcp)) {
tprintf(", ID_PRODUCT=%" PRIu16 ", ID_VERSION=%" PRIu16 "}",
id.product, id.version);
} else {
tprints(", ...}");
}
return 1;
}
static int
decode_bitset(struct tcb *tcp, long arg, const struct xlat decode_nr[],
const unsigned int max_nr, const char *dflt)
{
if (!verbose(tcp))
return 0;
unsigned int size;
if ((unsigned long) tcp->u_rval > max_nr)
size = max_nr;
else
size = tcp->u_rval;
char decoded_arg[size];
if (umoven(tcp, arg, size, decoded_arg) < 0)
return 0;
tprints(", [");
int bit_displayed = 0;
int i = next_set_bit(decoded_arg, 0, size);
if (i < 0) {
tprints(" 0 ");
} else {
printxval(decode_nr, i, dflt);
while ((i = next_set_bit(decoded_arg, i + 1, size)) > 0) {
if (abbrev(tcp) && bit_displayed >= 3) {
tprints(", ...");
break;
}
tprints(", ");
printxval(decode_nr, i, dflt);
bit_displayed++;
}
}
tprints("]");
return 1;
}
#ifdef EVIOCGMTSLOTS
static int
mtslots_ioctl(struct tcb *tcp, const unsigned int code, long arg)
{
const size_t size = _IOC_SIZE(code) / sizeof(int32_t);
if (!size)
return 0;
int32_t buffer[size];
if (!verbose(tcp) || umove(tcp, arg, &buffer) < 0)
return 0;
tprints(", {code=");
printxval(evdev_mtslots, buffer[0], "ABS_MT_???");
unsigned int i;
tprints(", values=[");
for (i = 1; i < ARRAY_SIZE(buffer); i++)
tprintf("%s%d", i > 1 ? ", " : "", buffer[i]);
tprints("]}");
return 1;
}
#endif /* EVIOCGMTSLOTS */
#ifdef EVIOCGREP
static int
repeat_ioctl(struct tcb *tcp, long arg)
{
unsigned int val[2];
if (!verbose(tcp) || umove(tcp, arg, &val) < 0)
return 0;
tprintf(", [%" PRIu32 " %" PRIu32 "]", val[0], val[1]);
return 1;
}
#endif /* EVIOCGREP */
static int
evdev_read_ioctl(struct tcb *tcp, const unsigned int code, long arg)
{
if (entering(tcp))
return 1;
if (syserror(tcp))
return 0;
if ((_IOC_NR(code) & ~EV_MAX) == _IOC_NR(EVIOCGBIT(0, 0))) {
switch (_IOC_NR(code) - 0x20) {
case EV_SYN:
return decode_bitset(tcp, arg, evdev_sync,
SYN_MAX, "SYN_???");
case EV_KEY:
return decode_bitset(tcp, arg, evdev_keycode,
KEY_MAX, "KEY_???");
case EV_REL:
return decode_bitset(tcp, arg, evdev_relative_axes,
REL_MAX, "REL_???");
case EV_ABS:
return decode_bitset(tcp, arg,
evdev_abs, ABS_MAX, "ABS_???");
case EV_MSC:
return decode_bitset(tcp, arg,
evdev_misc, MSC_MAX, "MSC_???");
#ifdef EV_SW
case EV_SW:
return decode_bitset(tcp, arg,
evdev_switch, SW_MAX, "SW_???");
#endif
case EV_LED:
return decode_bitset(tcp, arg,
evdev_leds, LED_MAX, "LED_???");
case EV_SND:
return decode_bitset(tcp, arg,
evdev_snd, SND_MAX, "SND_???");
case EV_REP:
return decode_bitset(tcp, arg, evdev_autorepeat,
REP_MAX, "REP_???");
case EV_FF:
return decode_bitset(tcp, arg, evdev_ff_types,
FF_MAX, "FF_???");
case EV_PWR:
printnum_int(tcp, arg, "%d");
return 1;
case EV_FF_STATUS:
return decode_bitset(tcp, arg, evdev_ff_status,
FF_STATUS_MAX, "FF_STATUS_???");
default:
return 0;
}
}
if ((_IOC_NR(code) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0)))
return abs_ioctl(tcp, arg);
switch (code) {
case EVIOCGVERSION:
tprints(", ");
printnum_int(tcp, arg, "%" PRIx32);
return 1;
case EVIOCGEFFECTS:
tprints(", ");
printnum_int(tcp, arg, "%" PRIu32);
return 1;
case EVIOCGID:
return getid_ioctl(tcp, arg);
#ifdef EVIOCGREP
case EVIOCGREP:
return repeat_ioctl(tcp, arg);;
#endif
case EVIOCGKEYCODE:
return keycode_ioctl(tcp, arg);
#ifdef EVIOCGKEYCODE_V2
case EVIOCGKEYCODE_V2:
return keycode_V2_ioctl(tcp, arg);
#endif
}
switch (_IOC_NR(code)) {
#ifdef EVIOCGMTSLOTS
case _IOC_NR(EVIOCGMTSLOTS(0)):
return mtslots_ioctl(tcp, code, arg);
#endif
case _IOC_NR(EVIOCGNAME(0)):
case _IOC_NR(EVIOCGPHYS(0)):
case _IOC_NR(EVIOCGUNIQ(0)):
tprints(", ");
printstr(tcp, arg, tcp->u_rval - 1);
return 1;
#ifdef EVIOCGPROP
case _IOC_NR(EVIOCGPROP(0)):
return decode_bitset(tcp, arg,
evdev_prop, INPUT_PROP_MAX, "PROP_???");
#endif
case _IOC_NR(EVIOCGSND(0)):
return decode_bitset(tcp, arg,
evdev_snd, SND_MAX, "SND_???");
#ifdef EVIOCGSW
case _IOC_NR(EVIOCGSW(0)):
return decode_bitset(tcp, arg,
evdev_switch, SW_MAX, "SW_???");
#endif
case _IOC_NR(EVIOCGKEY(0)):
return decode_bitset(tcp, arg,
evdev_keycode, KEY_MAX, "KEY_???");
case _IOC_NR(EVIOCGLED(0)):
return decode_bitset(tcp, arg,
evdev_leds, LED_MAX, "LED_???");
default:
return 0;
}
}
static int
evdev_write_ioctl(struct tcb *tcp, const unsigned int code, long arg)
{
if (exiting(tcp))
return 1;
if ((_IOC_NR(code) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0)))
return abs_ioctl(tcp, arg);
switch (code) {
#ifdef EVIOCSREP
case EVIOCSREP:
return repeat_ioctl(tcp, arg);
#endif
case EVIOCSKEYCODE:
return keycode_ioctl(tcp, arg);
#ifdef EVIOCSKEYCODE_V2
case EVIOCSKEYCODE_V2:
return keycode_V2_ioctl(tcp, arg);
#endif
case EVIOCSFF:
return ff_effect_ioctl(tcp, arg);
case EVIOCRMFF:
#ifdef EVIOCSCLOCKID
case EVIOCSCLOCKID:
#endif
case EVIOCGRAB:
#ifdef EVIOCREVOKE
case EVIOCREVOKE:
#endif
tprints(", ");
printnum_int(tcp, arg, "%u");
return 1;
default:
return 0;
}
}
int
evdev_ioctl(struct tcb *tcp, const unsigned int code, long arg)
{
switch(_IOC_DIR(code)) {
case _IOC_READ:
return evdev_read_ioctl(tcp, code, arg);
case _IOC_WRITE:
if (!evdev_write_ioctl(tcp, code, arg))
tprintf(", %lx", arg);
return 1;
default:
return 0;
}
}
#endif /* HAVE_LINUX_INPUT_H */