1 /* 2 * Copyright (c) 2015 Etienne Gemsa <etienne.gemsa (at) lse.epita.fr> 3 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at) altlinux.org> 4 * Copyright (c) 2015-2018 The strace developers. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "defs.h" 31 32 #ifdef HAVE_LINUX_INPUT_H 33 34 #include DEF_MPERS_TYPE(struct_ff_effect) 35 36 # include <linux/ioctl.h> 37 # include <linux/input.h> 38 39 typedef struct ff_effect struct_ff_effect; 40 41 #endif /* HAVE_LINUX_INPUT_H */ 42 43 #include MPERS_DEFS 44 45 #ifdef HAVE_LINUX_INPUT_H 46 47 static void 48 decode_envelope(void *const data) 49 { 50 const struct ff_envelope *const envelope = data; 51 52 tprintf(", envelope={attack_length=%" PRIu16 53 ", attack_level=%" PRIu16 54 ", fade_length=%" PRIu16 55 ", fade_level=%#x}", 56 envelope->attack_length, 57 envelope->attack_level, 58 envelope->fade_length, 59 envelope->fade_level); 60 } 61 62 static int 63 ff_effect_ioctl(struct tcb *const tcp, const kernel_ulong_t arg) 64 { 65 tprints(", "); 66 67 struct_ff_effect ffe; 68 69 if (umove_or_printaddr(tcp, arg, &ffe)) 70 return RVAL_IOCTL_DECODED; 71 72 tprints("{type="); 73 print_evdev_ff_type(ffe.type); 74 tprintf(", id=%" PRIu16 75 ", direction=%" PRIu16 ", ", 76 ffe.id, 77 ffe.direction); 78 79 if (abbrev(tcp)) { 80 tprints("...}"); 81 return RVAL_IOCTL_DECODED; 82 } 83 84 tprintf("trigger={button=%" PRIu16 85 ", interval=%" PRIu16 "}" 86 ", replay={length=%" PRIu16 87 ", delay=%" PRIu16 "}", 88 ffe.trigger.button, 89 ffe.trigger.interval, 90 ffe.replay.length, 91 ffe.replay.delay); 92 93 switch (ffe.type) { 94 case FF_CONSTANT: 95 tprintf(", constant={level=%" PRId16, 96 ffe.u.constant.level); 97 decode_envelope(&ffe.u.constant.envelope); 98 tprints("}"); 99 break; 100 case FF_RAMP: 101 tprintf(", ramp={start_level=%" PRId16 102 ", end_level=%" PRId16, 103 ffe.u.ramp.start_level, 104 ffe.u.ramp.end_level); 105 decode_envelope(&ffe.u.ramp.envelope); 106 tprints("}"); 107 break; 108 case FF_PERIODIC: 109 tprintf(", periodic={waveform=%" PRIu16 110 ", period=%" PRIu16 111 ", magnitude=%" PRId16 112 ", offset=%" PRId16 113 ", phase=%" PRIu16, 114 ffe.u.periodic.waveform, 115 ffe.u.periodic.period, 116 ffe.u.periodic.magnitude, 117 ffe.u.periodic.offset, 118 ffe.u.periodic.phase); 119 decode_envelope(&ffe.u.periodic.envelope); 120 tprintf(", custom_len=%u, custom_data=", 121 ffe.u.periodic.custom_len); 122 printaddr(ptr_to_kulong(ffe.u.periodic.custom_data)); 123 tprints("}"); 124 break; 125 case FF_RUMBLE: 126 tprintf(", rumble={strong_magnitude=%" PRIu16 127 ", weak_magnitude=%" PRIu16 "}", 128 ffe.u.rumble.strong_magnitude, 129 ffe.u.rumble.weak_magnitude); 130 break; 131 default: 132 break; 133 } 134 135 tprints("}"); 136 137 return RVAL_IOCTL_DECODED; 138 } 139 140 MPERS_PRINTER_DECL(int, evdev_write_ioctl_mpers, struct tcb *const tcp, 141 const unsigned int code, const kernel_ulong_t arg) 142 { 143 switch (code) { 144 case EVIOCSFF: 145 return ff_effect_ioctl(tcp, arg); 146 default: 147 return RVAL_DECODED; 148 } 149 } 150 151 #endif /* HAVE_LINUX_INPUT_H */ 152
