}
static int
-evdev_decode_number(unsigned int arg)
+evdev_decode_number(const unsigned int code)
{
- unsigned int nr = _IOC_NR(arg);
+ const unsigned int nr = _IOC_NR(code);
- if (_IOC_DIR(arg) == _IOC_WRITE) {
+ if (_IOC_DIR(code) == _IOC_WRITE) {
if (nr >= 0xc0 && nr <= 0xc0 + 0x3f) {
tprints("EVIOCSABS(");
printxval(evdev_abs, nr - 0xc0, "EV_???");
}
}
- if (_IOC_DIR(arg) != _IOC_READ)
+ if (_IOC_DIR(code) != _IOC_READ)
return 0;
if (nr >= 0x20 && nr <= 0x20 + 0x1f) {
tprints("EVIOCGBIT(");
printxval(evdev_ev, nr - 0x20, "EV_???");
- tprintf(", %u)", _IOC_SIZE(arg));
+ tprintf(", %u)", _IOC_SIZE(code));
return 1;
} else if (nr >= 0x40 && nr <= 0x40 + 0x3f) {
tprints("EVIOCGABS(");
switch (_IOC_NR(nr)) {
case 0x06:
- tprintf("EVIOCGNAME(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGNAME(%u)", _IOC_SIZE(code));
return 1;
case 0x07:
- tprintf("EVIOCGPHYS(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGPHYS(%u)", _IOC_SIZE(code));
return 1;
case 0x08:
- tprintf("EVIOCGUNIQ(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGUNIQ(%u)", _IOC_SIZE(code));
return 1;
case 0x09:
- tprintf("EVIOCGPROP(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGPROP(%u)", _IOC_SIZE(code));
return 1;
case 0x0a:
- tprintf("EVIOCGMTSLOTS(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGMTSLOTS(%u)", _IOC_SIZE(code));
return 1;
case 0x18:
- tprintf("EVIOCGKEY(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGKEY(%u)", _IOC_SIZE(code));
return 1;
case 0x19:
- tprintf("EVIOCGLED(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGLED(%u)", _IOC_SIZE(code));
return 1;
case 0x1a:
- tprintf("EVIOCGSND(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGSND(%u)", _IOC_SIZE(code));
return 1;
case 0x1b:
- tprintf("EVIOCGSW(%u)", _IOC_SIZE(arg));
+ tprintf("EVIOCGSW(%u)", _IOC_SIZE(code));
return 1;
default:
return 0;
}
static int
-hiddev_decode_number(unsigned int arg)
+hiddev_decode_number(const unsigned int code)
{
- if (_IOC_DIR(arg) == _IOC_READ) {
- switch (_IOC_NR(arg)) {
+ if (_IOC_DIR(code) == _IOC_READ) {
+ switch (_IOC_NR(code)) {
case 0x04:
- tprintf("HIDIOCGRAWNAME(%u)", _IOC_SIZE(arg));
+ tprintf("HIDIOCGRAWNAME(%u)", _IOC_SIZE(code));
return 1;
case 0x05:
- tprintf("HIDIOCGRAWPHYS(%u)", _IOC_SIZE(arg));
+ tprintf("HIDIOCGRAWPHYS(%u)", _IOC_SIZE(code));
return 1;
case 0x06:
- tprintf("HIDIOCSFEATURE(%u)", _IOC_SIZE(arg));
+ tprintf("HIDIOCSFEATURE(%u)", _IOC_SIZE(code));
return 1;
case 0x12:
- tprintf("HIDIOCGPHYS(%u)", _IOC_SIZE(arg));
+ tprintf("HIDIOCGPHYS(%u)", _IOC_SIZE(code));
return 1;
default:
return 0;
}
- } else if (_IOC_DIR(arg) == (_IOC_READ | _IOC_WRITE)) {
- switch (_IOC_NR(arg)) {
+ } else if (_IOC_DIR(code) == (_IOC_READ | _IOC_WRITE)) {
+ switch (_IOC_NR(code)) {
case 0x06:
- tprintf("HIDIOCSFEATURE(%u)", _IOC_SIZE(arg));
+ tprintf("HIDIOCSFEATURE(%u)", _IOC_SIZE(code));
return 1;
case 0x07:
- tprintf("HIDIOCGFEATURE(%u)", _IOC_SIZE(arg));
+ tprintf("HIDIOCGFEATURE(%u)", _IOC_SIZE(code));
return 1;
default:
return 0;
}
static int
-ioctl_decode_command_number(unsigned int arg)
+ioctl_decode_command_number(struct tcb *tcp)
{
- switch (_IOC_TYPE(arg)) {
+ const unsigned int code = tcp->u_arg[1];
+
+ switch (_IOC_TYPE(code)) {
case 'E':
- return evdev_decode_number(arg);
+ return evdev_decode_number(code);
case 'H':
- return hiddev_decode_number(arg);
+ return hiddev_decode_number(code);
case 'M':
- if (_IOC_DIR(arg) == _IOC_WRITE) {
- tprintf("MIXER_WRITE(%u)", _IOC_NR(arg));
+ if (_IOC_DIR(code) == _IOC_WRITE) {
+ tprintf("MIXER_WRITE(%u)", _IOC_NR(code));
return 1;
- } else if (_IOC_DIR(arg) == _IOC_READ) {
- tprintf("MIXER_READ(%u)", _IOC_NR(arg));
+ } else if (_IOC_DIR(code) == _IOC_READ) {
+ tprintf("MIXER_READ(%u)", _IOC_NR(code));
return 1;
}
return 0;
case 'U':
- if (_IOC_DIR(arg) == _IOC_READ && _IOC_NR(arg) == 0x2c) {
- tprintf("UI_GET_SYSNAME(%u)", _IOC_SIZE(arg));
+ if (_IOC_DIR(code) == _IOC_READ && _IOC_NR(code) == 0x2c) {
+ tprintf("UI_GET_SYSNAME(%u)", _IOC_SIZE(code));
return 1;
}
return 0;
case 'j':
- if (_IOC_DIR(arg) == _IOC_READ && _IOC_NR(arg) == 0x13) {
- tprintf("JSIOCGNAME(%u)", _IOC_SIZE(arg));
+ if (_IOC_DIR(code) == _IOC_READ && _IOC_NR(code) == 0x13) {
+ tprintf("JSIOCGNAME(%u)", _IOC_SIZE(code));
return 1;
}
return 0;
case 'k':
- if (_IOC_DIR(arg) == _IOC_WRITE && _IOC_NR(arg) == 0) {
- tprintf("SPI_IOC_MESSAGE(%u)", _IOC_SIZE(arg));
+ if (_IOC_DIR(code) == _IOC_WRITE && _IOC_NR(code) == 0) {
+ tprintf("SPI_IOC_MESSAGE(%u)", _IOC_SIZE(code));
return 1;
}
return 0;
}
static int
-ioctl_decode(struct tcb *tcp, unsigned int code, long arg)
+ioctl_decode(struct tcb *tcp)
{
+ const unsigned int code = tcp->u_arg[1];
+ const long arg = tcp->u_arg[2];
+
switch (_IOC_TYPE(code)) {
#if defined(ALPHA) || defined(POWERPC)
case 'f': case 't': case 'T':
SYS_FUNC(ioctl)
{
const struct_ioctlent *iop;
+ int ret;
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
- if (!ioctl_decode_command_number(tcp->u_arg[1])) {
+ if (!ioctl_decode_command_number(tcp)) {
iop = ioctl_lookup(tcp->u_arg[1]);
if (iop) {
tprints(iop->symbol);
ioctl_print_code(tcp->u_arg[1]);
}
}
- ioctl_decode(tcp, tcp->u_arg[1], tcp->u_arg[2]);
+ ret = ioctl_decode(tcp);
+ } else {
+ ret = ioctl_decode(tcp) | RVAL_DECODED;
}
- else {
- int ret = ioctl_decode(tcp, tcp->u_arg[1], tcp->u_arg[2]);
- if (!ret)
- tprintf(", %#lx", tcp->u_arg[2]);
+
+ if (ret & RVAL_DECODED) {
+ ret &= ~RVAL_DECODED;
+ if (ret)
+ --ret;
else
- return ret - 1;
+ tprintf(", %#lx", tcp->u_arg[2]);
+ ret |= RVAL_DECODED;
+ } else {
+ if (ret)
+ --ret;
}
- return 0;
+
+ return ret;
}