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Cygwin: serial: avoid overrun of vtime 

After changing the type of fhandler_serial::vtime_ to cc_t, vtime_
must be stored in 10s of seconds, not in milliseconds.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2020-03-21 10:36:11 +01:00
parent e4f9fc92ac
commit 72294cd211
1 changed files with 4 additions and 4 deletions
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8
winsup/cygwin/fhandler_serial.cc
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@ -903,7 +903,7 @@ fhandler_serial::tcsetattr (int action, const struct termios *t)
} }
else else
{ {
vtime_ = t->c_cc[VTIME] * 100; vtime_ = t->c_cc[VTIME];
vmin_ = t->c_cc[VMIN]; vmin_ = t->c_cc[VMIN];
} }
@ -925,13 +925,13 @@ fhandler_serial::tcsetattr (int action, const struct termios *t)
{ {
/* set timeoout constant appropriately and we will only try to /* set timeoout constant appropriately and we will only try to
read one character in ReadFile() */ read one character in ReadFile() */
to.ReadTotalTimeoutConstant = vtime_; to.ReadTotalTimeoutConstant = vtime_ * 100;
to.ReadIntervalTimeout = to.ReadTotalTimeoutMultiplier = MAXDWORD; to.ReadIntervalTimeout = to.ReadTotalTimeoutMultiplier = MAXDWORD;
} }
else if ((vmin_ > 0) && (vtime_ > 0)) else if ((vmin_ > 0) && (vtime_ > 0))
{ {
/* time applies to the interval time for this case */ /* time applies to the interval time for this case */
to.ReadIntervalTimeout = vtime_; to.ReadIntervalTimeout = vtime_ * 100;
} }
else if ((vmin_ == 0) && (vtime_ == 0)) else if ((vmin_ == 0) && (vtime_ == 0))
{ {
@ -1138,7 +1138,7 @@ fhandler_serial::tcgetattr (struct termios *t)
if (!wbinary ()) if (!wbinary ())
t->c_oflag |= ONLCR; t->c_oflag |= ONLCR;
t->c_cc[VTIME] = vtime_ / 100; t->c_cc[VTIME] = vtime_;
t->c_cc[VMIN] = vmin_; t->c_cc[VMIN] = vmin_;
debug_printf ("vmin_ %u, vtime_ %u", vmin_, vtime_); debug_printf ("vmin_ %u, vtime_ %u", vmin_, vtime_);