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2001-10-11 Mike Siers <mikes@poliac.com>

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* libc/termios.c: Fixed a memory leak in the termios
	software.  Basically the tty open function was allocating an input
	raw buffer, an output raw buffer, and a cooked buffer that were
	not getting released.  I have attached a patch for the latest
	snapshot.  The patch also has a fix to ensure the tty link list
	is updated correctly when a tty is closed.
This commit is contained in:
Joel Sherrill
2001-10-16 20:52:57 +00:00
parent fda1996850
commit 7307d94354
1 changed files with 15 additions and 4 deletions
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19
c/src/lib/libc/termios.c
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@@ -324,19 +324,30 @@ rtems_termios_close (void *arg)
drainOutput (tty); drainOutput (tty);
if (tty->device.lastClose) if (tty->device.lastClose)
(*tty->device.lastClose)(tty->major, tty->minor, arg); (*tty->device.lastClose)(tty->major, tty->minor, arg);
if (tty->forw == NULL) if (tty->forw == NULL) {
rtems_termios_ttyTail = tty->back; rtems_termios_ttyTail = tty->back;
else if ( rtems_termios_ttyTail != NULL ) {
rtems_termios_ttyTail->forw = NULL;
}
}
else {
tty->forw->back = tty->back; tty->forw->back = tty->back;
if (tty->back == NULL) }
if (tty->back == NULL) {
rtems_termios_ttyHead = tty->forw; rtems_termios_ttyHead = tty->forw;
else if ( rtems_termios_ttyHead != NULL ) {
rtems_termios_ttyHead->back = NULL;
}
}
else {
tty->back->forw = tty->forw; tty->back->forw = tty->forw;
}
rtems_semaphore_delete (tty->isem); rtems_semaphore_delete (tty->isem);
rtems_semaphore_delete (tty->osem); rtems_semaphore_delete (tty->osem);
rtems_semaphore_delete (tty->rawOutBufSemaphore); rtems_semaphore_delete (tty->rawOutBufSemaphore);
if (!tty->device.pollRead) if (!tty->device.pollRead)
rtems_semaphore_delete (tty->rawInBufSemaphore); rtems_semaphore_delete (tty->rawInBufSemaphore);
free (tty->cbuf);
free (tty); free (tty);
} }
rtems_semaphore_release (rtems_termios_ttyMutex); rtems_semaphore_release (rtems_termios_ttyMutex);