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Created ECHO system call for testing purposes.

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Furthermore, a quick way to get one's own process number.
This commit is contained in:
Jorrit Herder
2005-05-27 13:57:00 +00:00
parent 07d582872f
commit 8d9c0886cd
7 changed files with 60 additions and 42 deletions
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17
drivers/tty/tty.c
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@@ -60,7 +60,6 @@
#include <sys/ioc_tty.h>
#include <signal.h>
#include <minix/callnr.h>
#include <minix/com.h>
#if (CHIP == INTEL)
#include <minix/keymap.h>
#endif
@@ -107,7 +106,7 @@ FORWARD _PROTOTYPE( void do_close, (tty_t *tp, message *m_ptr) );
FORWARD _PROTOTYPE( void do_read, (tty_t *tp, message *m_ptr) );
FORWARD _PROTOTYPE( void do_write, (tty_t *tp, message *m_ptr) );
FORWARD _PROTOTYPE( void in_transfer, (tty_t *tp) );
FORWARD _PROTOTYPE( int echo, (tty_t *tp, int ch) );
FORWARD _PROTOTYPE( int tty_echo, (tty_t *tp, int ch) );
FORWARD _PROTOTYPE( void rawecho, (tty_t *tp, int ch) );
FORWARD _PROTOTYPE( int back_over, (tty_t *tp) );
FORWARD _PROTOTYPE( void reprint, (tty_t *tp) );
@@ -883,7 +882,7 @@ int count; /* number of input characters */
if (ch == tp->tty_termios.c_cc[VERASE]) {
(void) back_over(tp);
if (!(tp->tty_termios.c_lflag & ECHOE)) {
(void) echo(tp, ch);
(void) tty_echo(tp, ch);
}
continue;
}
@@ -892,7 +891,7 @@ int count; /* number of input characters */
if (ch == tp->tty_termios.c_cc[VKILL]) {
while (back_over(tp)) {}
if (!(tp->tty_termios.c_lflag & ECHOE)) {
(void) echo(tp, ch);
(void) tty_echo(tp, ch);
if (tp->tty_termios.c_lflag & ECHOK)
rawecho(tp, '\n');
}
@@ -938,7 +937,7 @@ int count; /* number of input characters */
sig = SIGINT;
if (ch == tp->tty_termios.c_cc[VQUIT]) sig = SIGQUIT;
sigchar(tp, sig);
(void) echo(tp, ch);
(void) tty_echo(tp, ch);
continue;
}
}
@@ -963,7 +962,7 @@ int count; /* number of input characters */
}
/* Perform the intricate function of echoing. */
if (tp->tty_termios.c_lflag & (ECHO|ECHONL)) ch = echo(tp, ch);
if (tp->tty_termios.c_lflag & (ECHO|ECHONL)) ch = tty_echo(tp, ch);
/* Save the character in the input queue. */
*tp->tty_inhead++ = ch;
@@ -982,7 +981,7 @@ int count; /* number of input characters */
/*===========================================================================*
* echo *
*===========================================================================*/
PRIVATE int echo(tp, ch)
PRIVATE int tty_echo(tp, ch)
register tty_t *tp; /* terminal on which to echo */
register int ch; /* pointer to character to echo */
{
@@ -1111,14 +1110,14 @@ register tty_t *tp; /* pointer to tty struct */
if (count == tp->tty_incount) return; /* no reason to reprint */
/* Show REPRINT (^R) and move to a new line. */
(void) echo(tp, tp->tty_termios.c_cc[VREPRINT] | IN_ESC);
(void) tty_echo(tp, tp->tty_termios.c_cc[VREPRINT] | IN_ESC);
rawecho(tp, '\r');
rawecho(tp, '\n');
/* Reprint from the last break onwards. */
do {
if (head == bufend(tp->tty_inbuf)) head = tp->tty_inbuf;
*head = echo(tp, *head);
*head = tty_echo(tp, *head);
head++;
count++;
} while (count < tp->tty_incount);