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Fix broken ioctl calls, add exception handling.

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This commit is contained in:
Christopher Baker 2013-10-27 18:50:06 -05:00
parent 9d04c09f10
commit 0e5f7fa317
1 changed files with 129 additions and 28 deletions
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157
src/impl/unix.cc
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@ -251,20 +251,24 @@ Serial::SerialImpl::reconfigurePort ()
// ultimately determines which baud rates can be used. This ioctl sets both the input // ultimately determines which baud rates can be used. This ioctl sets both the input
// and output speed. // and output speed.
speed_t new_baud = static_cast<speed_t>(baudrate_); speed_t new_baud = static_cast<speed_t>(baudrate_);
if (ioctl (fd_, IOSSIOSPEED, &new_baud, 1) < 0) { if (-1 == ioctl (fd_, IOSSIOSPEED, &new_baud, 1)) {
THROW (IOException, errno); THROW (IOException, errno);
} }
// Linux Support // Linux Support
#elif defined(__linux__) && defined (TIOCSSERIAL) #elif defined(__linux__) && defined (TIOCSSERIAL)
struct serial_struct ser; struct serial_struct ser;
ioctl (fd_, TIOCGSERIAL, &ser);
if (-1 == ioctl (fd_, TIOCGSERIAL, &ser)) {
THROW (IOException, errno);
}
// set custom divisor // set custom divisor
ser.custom_divisor = ser.baud_base / (int) baudrate_; ser.custom_divisor = ser.baud_base / (int) baudrate_;
// update flags // update flags
ser.flags &= ~ASYNC_SPD_MASK; ser.flags &= ~ASYNC_SPD_MASK;
ser.flags |= ASYNC_SPD_CUST; ser.flags |= ASYNC_SPD_CUST;
if (ioctl (fd_, TIOCSSERIAL, &ser) < 0) { if (-1 == ioctl (fd_, TIOCSSERIAL, &ser)) {
THROW (IOException, errno); THROW (IOException, errno);
} }
#else #else
@ -390,11 +394,10 @@ Serial::SerialImpl::available ()
return 0; return 0;
} }
int count = 0; int count = 0;
int result = ioctl (fd_, TIOCINQ, &count); if (-1 == ioctl (fd_, TIOCINQ, &count)) {
if (result == 0) {
return static_cast<size_t> (count);
} else {
THROW (IOException, errno); THROW (IOException, errno);
} else {
return static_cast<size_t> (count);
} }
} }
@ -780,10 +783,21 @@ Serial::SerialImpl::setBreak (bool level)
if (is_open_ == false) { if (is_open_ == false) {
throw PortNotOpenedException ("Serial::setBreak"); throw PortNotOpenedException ("Serial::setBreak");
} }
if (level) { if (level) {
ioctl (fd_, TIOCSBRK); if(-1 == ioctl (fd_, TIOCSBRK))
{
stringstream ss;
ss << "setBreak failed on a call to ioctl(TIOCSBRK): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
} else { } else {
ioctl (fd_, TIOCCBRK); if(-1 == ioctl (fd_, TIOCCBRK))
{
stringstream ss;
ss << "setBreak failed on a call to ioctl(TIOCCBRK): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
} }
} }
@ -793,10 +807,23 @@ Serial::SerialImpl::setRTS (bool level)
if (is_open_ == false) { if (is_open_ == false) {
throw PortNotOpenedException ("Serial::setRTS"); throw PortNotOpenedException ("Serial::setRTS");
} }
int command = TIOCM_RTS;
if (level) { if (level) {
ioctl (fd_, TIOCMBIS, TIOCM_RTS); if(-1 == ioctl (fd_, TIOCMBIS, &command))
{
stringstream ss;
ss << "setRTS failed on a call to ioctl(TIOCMBIS): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
} else { } else {
ioctl (fd_, TIOCMBIC, TIOCM_RTS); if(-1 == ioctl (fd_, TIOCMBIC, &command))
{
stringstream ss;
ss << "setRTS failed on a call to ioctl(TIOCMBIC): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
} }
} }
@ -806,10 +833,23 @@ Serial::SerialImpl::setDTR (bool level)
if (is_open_ == false) { if (is_open_ == false) {
throw PortNotOpenedException ("Serial::setDTR"); throw PortNotOpenedException ("Serial::setDTR");
} }
int command = TIOCM_DTR;
if (level) { if (level) {
ioctl (fd_, TIOCMBIS, TIOCM_DTR); if(-1 == ioctl (fd_, TIOCMBIS, &command))
{
stringstream ss;
ss << "setDTR failed on a call to ioctl(TIOCMBIS): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
} else { } else {
ioctl (fd_, TIOCMBIC, TIOCM_DTR); if(-1 == ioctl (fd_, TIOCMBIC, &command))
{
stringstream ss;
ss << "setDTR failed on a call to ioctl(TIOCMBIC): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
} }
} }
@ -817,17 +857,34 @@ bool
Serial::SerialImpl::waitForChange () Serial::SerialImpl::waitForChange ()
{ {
#ifndef TIOCMIWAIT #ifndef TIOCMIWAIT
while (is_open_ == true) {
int s = ioctl (fd_, TIOCMGET, 0); while (is_open_ == true) {
if ((s & TIOCM_CTS) != 0) return true;
if ((s & TIOCM_DSR) != 0) return true; int status;
if ((s & TIOCM_RI) != 0) return true;
if ((s & TIOCM_CD) != 0) return true; if(-1 == ioctl (fd_, TIOCMGET, &status))
{
stringstream ss;
ss << "waitForChange failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
else
{
if (0 != (status & TIOCM_CTS) ||
0 != (status & TIOCM_DSR) ||
0 != (status & TIOCM_RI) ||
0 != (status & TIOCM_CD)
) return true;
}
usleep(1000); usleep(1000);
} }
return false; return false;
#else #else
if (ioctl(fd_, TIOCMIWAIT, (TIOCM_CD|TIOCM_DSR|TIOCM_RI|TIOCM_CTS)) != 0) { int command = (TIOCM_CD|TIOCM_DSR|TIOCM_RI|TIOCM_CTS);
if (-1 == ioctl (fd_, TIOCMIWAIT, &command)) {
stringstream ss; stringstream ss;
ss << "waitForDSR failed on a call to ioctl(TIOCMIWAIT): " ss << "waitForDSR failed on a call to ioctl(TIOCMIWAIT): "
<< errno << " " << strerror(errno); << errno << " " << strerror(errno);
@ -843,8 +900,19 @@ Serial::SerialImpl::getCTS ()
if (is_open_ == false) { if (is_open_ == false) {
throw PortNotOpenedException ("Serial::getCTS"); throw PortNotOpenedException ("Serial::getCTS");
} }
int s = ioctl (fd_, TIOCMGET, 0);
return (s & TIOCM_CTS) != 0; int status;
if(-1 == ioctl (fd_, TIOCMGET, &status))
{
stringstream ss;
ss << "getCTS failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
else
{
return 0 != (status & TIOCM_CTS);
}
} }
bool bool
@ -853,8 +921,19 @@ Serial::SerialImpl::getDSR ()
if (is_open_ == false) { if (is_open_ == false) {
throw PortNotOpenedException ("Serial::getDSR"); throw PortNotOpenedException ("Serial::getDSR");
} }
int s = ioctl (fd_, TIOCMGET, 0);
return (s & TIOCM_DSR) != 0; int status;
if(-1 == ioctl (fd_, TIOCMGET, &status))
{
stringstream ss;
ss << "getDSR failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
else
{
return 0 != (status & TIOCM_DSR);
}
} }
bool bool
@ -863,8 +942,19 @@ Serial::SerialImpl::getRI ()
if (is_open_ == false) { if (is_open_ == false) {
throw PortNotOpenedException ("Serial::getRI"); throw PortNotOpenedException ("Serial::getRI");
} }
int s = ioctl (fd_, TIOCMGET, 0);
return (s & TIOCM_RI) != 0; int status;
if(-1 == ioctl (fd_, TIOCMGET, &status))
{
stringstream ss;
ss << "getRI failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
else
{
return 0 != (status & TIOCM_RI);
}
} }
bool bool
@ -873,8 +963,19 @@ Serial::SerialImpl::getCD ()
if (is_open_ == false) { if (is_open_ == false) {
throw PortNotOpenedException ("Serial::getCD"); throw PortNotOpenedException ("Serial::getCD");
} }
int s = ioctl (fd_, TIOCMGET, 0);
return (s & TIOCM_CD) != 0; int status;
if(-1 == ioctl (fd_, TIOCMGET, &status))
{
stringstream ss;
ss << "getCD failed on a call to ioctl(TIOCMGET): " << errno << " " << strerror(errno);
throw(SerialException(ss.str().c_str()));
}
else
{
return 0 != (status & TIOCM_CD);
}
} }
void void