sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

TTY: use libchardriver; clean up

Browse source 
- writing to a PTY master side blocks if there is not already a
  blocked reader on the slave side, and select now reflects this;
- internally, TTY now uses a test based on "caller != NONE" rather
  than "grant != GRANT_INVALID" to identify whether a call is
  currently ongoing;
- "offset" fields have been removed as they equal the corresponding
  "cum" fields;
- improved variable typing and function naming here and there;
- various other small fixes.

Change-Id: I6b51452888942e864b4e034e8c8490576184a23e
This commit is contained in:
David van Moolenbroek 2013-09-11 12:48:10 +02:00 committed by Lionel Sambuc
parent 701f2b4dd5
commit 3d697930dd
15 changed files with 997 additions and 1060 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
distrib/sets/lists/minix/mi
View file

@ -1221,7 +1221,7 @@
./usr/include/minix/sysutil.h minix-sys
./usr/include/minix/termios.h minix-sys
./usr/include/minix/timers.h minix-sys
./usr/include/minix/tty.h minix-sys
./usr/include/minix/tty.h minix-sys obsolete
./usr/include/minix/type.h minix-sys
./usr/include/minix/types.h minix-sys obsolete
./usr/include/minix/u64.h minix-sys

4
drivers/tty/Makefile
View file

@ -6,8 +6,8 @@ PROG= tty
SRCS += tty.c pty.c
DPADD+= ${LIBSYS} ${LIBTIMERS}
LDADD+= -lsys -ltimers
DPADD+= ${LIBCHARDRIVER} ${LIBSYS} ${LIBTIMERS}
LDADD+= -lchardriver -lsys -ltimers
MAN=

4
drivers/tty/arch/earm/console.c
View file

@ -4,7 +4,7 @@
#include "tty.h"
void
do_video(message *m)
do_video(message *m, int ipc_status)
{
}
@ -19,7 +19,7 @@ cons_stop(void)
}
int
con_loadfont(message *m)
con_loadfont(endpoint_t endpt, cp_grant_id_t grant)
{
return 0;
}

9
drivers/tty/arch/earm/keyboard.c
View file

@ -19,12 +19,7 @@ do_kb_inject(message *m)
}
void
do_kbd(message *m)
{
}
void
do_kbdaux(message *m)
do_kbd(message *m, int ipc_status)
{
}
@ -34,7 +29,7 @@ kb_init_once(void)
}
int
kbd_loadmap(message *m)
kbd_loadmap(endpoint_t endpt, cp_grant_id_t grant)
{
return 0;
}

15
drivers/tty/arch/earm/rs232.c
View file

@ -237,11 +237,11 @@ rs_write(register tty_t *tp, int try)
if (tp->tty_outcaller == KERNEL) {
/* We're trying to print on kernel's behalf */
memcpy(rs->ohead,
(void *) tp->tty_outgrant + tp->tty_outoffset,
(char *) tp->tty_outgrant + tp->tty_outcum,
count);
} else {
if ((r = sys_safecopyfrom(tp->tty_outcaller,
tp->tty_outgrant, tp->tty_outoffset,
tp->tty_outgrant, tp->tty_outcum,
(vir_bytes) rs->ohead, count)) != OK) {
return 0;
}
@ -262,24 +262,21 @@ rs_write(register tty_t *tp, int try)
rs_ostart(rs);
if ((rs->ohead += ocount) >= bufend(rs->obuf))
rs->ohead -= buflen(rs->obuf);
tp->tty_outoffset += count;
tp->tty_outcum += count;
if ((tp->tty_outleft -= count) == 0) {
/* Output is finished, reply to the writer. */
tty_reply(DEV_REVIVE, tp->tty_outcaller,
tp->tty_outproc, tp->tty_outgrant,
chardriver_reply_task(tp->tty_outcaller, tp->tty_outid,
tp->tty_outcum);
tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
tp->tty_outcaller = NONE;
}
}
if (tp->tty_outleft > 0 && tp->tty_termios.c_ospeed == B0) {
/* Oops, the line has hung up. */
tty_reply(DEV_REVIVE, tp->tty_outcaller, tp->tty_outproc,
tp->tty_outgrant, EIO);
chardriver_reply_task(tp->tty_outcaller, tp->tty_outid, EIO);
tp->tty_outleft = tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
tp->tty_outcaller = NONE;
}
return 1;

175
drivers/tty/arch/i386/console.c
View file

@ -18,16 +18,10 @@
#include <minix/drivers.h>
#include <termios.h>
#include <assert.h>
#include <sys/ioctl.h>
#include <sys/vm.h>
#include <sys/video.h>
#include <sys/mman.h>
#include <minix/tty.h>
#include <minix/callnr.h>
#include <minix/com.h>
#include <minix/sys_config.h>
#include <minix/vm.h>
#include "tty.h"
/* Set this to 1 if you want console output duplicated on the first
@ -142,6 +136,18 @@ static void vid_vid_copy(int src, int dst, int count);
static void get_6845(int reg, unsigned *val);
#endif
static int video_open(devminor_t minor, int access, endpoint_t user_endpt);
static int video_close(devminor_t minor);
static int video_ioctl(devminor_t minor, unsigned long request,
endpoint_t endpt, cp_grant_id_t grant, int flags,
endpoint_t user_endpt, cdev_id_t id);
static struct chardriver video_tab = {
.cdr_open = video_open,
.cdr_close = video_close,
.cdr_ioctl = video_ioctl
};
/*===========================================================================*
* cons_write *
*===========================================================================*/
@ -174,16 +180,14 @@ int try;
if (count > sizeof(buf)) count = sizeof(buf);
if (tp->tty_outcaller == KERNEL) {
/* We're trying to print on kernel's behalf */
memcpy(buf, (void *) tp->tty_outgrant + tp->tty_outoffset,
count);
memcpy(buf, (char *) tp->tty_outgrant + tp->tty_outcum, count);
} else {
if ((result = sys_safecopyfrom(tp->tty_outcaller,
tp->tty_outgrant, tp->tty_outoffset,
tp->tty_outgrant, tp->tty_outcum,
(vir_bytes) buf, count)) != OK) {
break;
}
}
tp->tty_outoffset += count;
tbuf = buf;
/* Update terminal data structure. */
@ -215,10 +219,10 @@ int try;
/* Reply to the writer if all output is finished or if an error occured. */
if (tp->tty_outleft == 0 || result != OK) {
tty_reply(DEV_REVIVE, tp->tty_outcaller, tp->tty_outproc,
tp->tty_outgrant, result != OK ? result : tp->tty_outcum);
chardriver_reply_task(tp->tty_outcaller, tp->tty_outid,
result != OK ? result : tp->tty_outcum);
tp->tty_outcum = tp->tty_outleft = 0;
tp->tty_outgrant = GRANT_INVALID;
tp->tty_outcaller = NONE;
}
return 0;
@ -807,84 +811,69 @@ static void beep()
}
}
/*===========================================================================*
* video_open *
*===========================================================================*/
static int video_open(devminor_t minor, int UNUSED(access),
endpoint_t UNUSED(user_endpt))
{
/* Should grant IOPL */
disable_console();
return OK;
}
/*===========================================================================*
* video_close *
*===========================================================================*/
static int video_close(devminor_t minor)
{
reenable_console();
return OK;
}
/*===========================================================================*
* video_ioctl *
*===========================================================================*/
static int video_ioctl(devminor_t minor, unsigned long request,
endpoint_t endpt, cp_grant_id_t grant, int flags,
endpoint_t user_endpt, cdev_id_t id)
{
struct mapreqvm mapreqvm;
int r, do_map;
switch (request) {
case TIOCMAPMEM:
case TIOCUNMAPMEM:
do_map = (request == TIOCMAPMEM); /* else unmap */
if ((r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) &mapreqvm,
sizeof(mapreqvm))) != OK)
return r;
if (do_map) {
mapreqvm.vaddr_ret = vm_map_phys(user_endpt,
(void *) mapreqvm.phys_offset, mapreqvm.size);
r = sys_safecopyto(endpt, grant, 0, (vir_bytes) &mapreqvm,
sizeof(mapreqvm));
} else {
r = vm_unmap_phys(user_endpt, mapreqvm.vaddr, mapreqvm.size);
}
return r;
default:
return ENOTTY;
}
}
/*===========================================================================*
* do_video *
*===========================================================================*/
void do_video(message *m)
void do_video(message *m, int ipc_status)
{
int r;
/* Execute the requested device driver function. */
r= EINVAL; /* just in case */
switch (m->m_type) {
case DEV_OPEN:
/* Should grant IOPL */
disable_console();
tty_reply(DEV_OPEN_REPL, m->m_source, m->USER_ENDPT,
(cp_grant_id_t) m->IO_GRANT, OK);
return;
case DEV_CLOSE:
reenable_console();
tty_reply(DEV_CLOSE_REPL, m->m_source, m->USER_ENDPT,
(cp_grant_id_t) m->IO_GRANT, OK);
return;
case DEV_IOCTL_S:
switch(m->REQUEST) {
case TIOCMAPMEM:
case TIOCUNMAPMEM: {
int r, do_map;
struct mapreqvm mapreqvm;
do_map= (m->REQUEST == TIOCMAPMEM); /* else unmap */
r = sys_safecopyfrom(m->m_source,
(cp_grant_id_t) m->IO_GRANT, 0,
(vir_bytes) &mapreqvm, sizeof(mapreqvm));
if (r != OK)
{
printf("tty: sys_safecopyfrom failed\n");
break;
}
/* In safe ioctl mode, the POSITION field contains
* the endpt number of the original requestor.
* USER_ENDPT is always FS.
*/
if(do_map) {
mapreqvm.vaddr_ret = vm_map_phys(m->POSITION,
(void *) mapreqvm.phys_offset, mapreqvm.size);
if((r = sys_safecopyto(m->m_source,
(cp_grant_id_t) m->IO_GRANT, 0,
(vir_bytes) &mapreqvm,
sizeof(mapreqvm))) != OK) {
printf("tty: sys_safecopyto failed\n");
}
} else {
r = vm_unmap_phys(m->POSITION,
mapreqvm.vaddr, mapreqvm.size);
}
break;
}
default:
r= ENOTTY;
break;
}
break;
default:
printf(
"Warning, TTY(video) got unexpected request %d from %d\n",
m->m_type, m->m_source);
r= EINVAL;
}
tty_reply(DEV_REVIVE, m->m_source, m->USER_ENDPT,
(cp_grant_id_t) m->IO_GRANT, r);
chardriver_process(&video_tab, m, ipc_status);
}
/*===========================================================================*
* beep_x *
*===========================================================================*/
@ -1137,12 +1126,11 @@ void select_console(int cons_line)
/*===========================================================================*
* con_loadfont *
*===========================================================================*/
int con_loadfont(m)
message *m;
int con_loadfont(endpoint_t endpt, cp_grant_id_t grant)
{
/* Load a font into the EGA or VGA adapter. */
int result;
int r, r2;
static struct sequence seq1[7] = {
{ GA_SEQUENCER_INDEX, 0x00, 0x01 },
{ GA_SEQUENCER_INDEX, 0x02, 0x04 },
@ -1164,17 +1152,14 @@ message *m;
seq2[6].value= color ? 0x0E : 0x0A;
result = ga_program(seq1); /* bring font memory into view */
r = ga_program(seq1); /* bring font memory into view */
if (r != OK) return r;
if(sys_safecopyfrom(m->m_source, (cp_grant_id_t) m->IO_GRANT, 0,
(vir_bytes) font_memory, GA_FONT_SIZE) != OK) {
printf("tty: copying from %d failed\n", m->m_source);
return EFAULT;
}
r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) font_memory, GA_FONT_SIZE);
result = ga_program(seq2); /* restore */
r2 = ga_program(seq2); /* restore */
return(result);
return(r != OK ? r : r2);
}
/*===========================================================================*

505
drivers/tty/arch/i386/keyboard.c
View file

@ -123,19 +123,17 @@ static obs_t sfkey_obs[12]; /* observers for SHIFT F1-F12 */
static struct kbd
{
int minor;
devminor_t minor;
int nr_open;
char buf[KBD_BUFSZ];
int offset;
int avail;
int req_size;
int req_proc;
size_t req_size;
cdev_id_t req_id;
cp_grant_id_t req_grant;
vir_bytes req_addr_offset;
int incaller;
int select_ops;
int select_proc;
int select_minor; /* sanity check only, can be removed */
endpoint_t req_caller;
unsigned int select_ops;
endpoint_t select_proc;
} kbd, kbdaux;
/* Data that is to be sent to the keyboard. Each byte is ACKed by the
@ -155,7 +153,6 @@ static long sticky_alt_mode = 0;
static long debug_fkeys = 1;
static timer_t tmr_kbd_wd;
static void handle_req(struct kbd *kbdp, message *m);
static void kbc_cmd0(int cmd);
static void kbc_cmd1(int cmd, int data);
static int kbc_read(void);
@ -171,221 +168,285 @@ static int kb_read(struct tty *tp, int try);
static unsigned map_key(int scode);
static void kbd_watchdog(timer_t *tmrp);
int micro_delay(u32_t usecs)
static int kbd_open(devminor_t minor, int access, endpoint_t user_endpt);
static int kbd_close(devminor_t minor);
static ssize_t kbd_read(devminor_t minor, u64_t position, endpoint_t endpt,
cp_grant_id_t grant, size_t size, int flags, cdev_id_t id);
static ssize_t kbd_write(devminor_t minor, u64_t position, endpoint_t endpt,
cp_grant_id_t grant, size_t size, int flags, cdev_id_t id);
static int kbd_ioctl(devminor_t minor, unsigned long request, endpoint_t endpt,
cp_grant_id_t grant, int flags, endpoint_t user_endpt, cdev_id_t id);
static int kbd_cancel(devminor_t minor, endpoint_t endpt, cdev_id_t id);
static int kbd_select(devminor_t minor, unsigned int ops, endpoint_t endpt);
static struct chardriver kbd_tab = {
.cdr_open = kbd_open,
.cdr_close = kbd_close,
.cdr_read = kbd_read,
.cdr_write = kbd_write,
.cdr_ioctl = kbd_ioctl,
.cdr_cancel = kbd_cancel,
.cdr_select = kbd_select
};
/*===========================================================================*
* line2kbd *
*===========================================================================*/
static struct kbd *
line2kbd(devminor_t minor)
{
/* TTY can't use the library micro_delay() as that calls PM. */
tickdelay(micros_to_ticks(usecs));
switch (minor) {
case KBD_MINOR: return &kbd;
case KBDAUX_MINOR: return &kbdaux;
default: return NULL;
}
}
/*===========================================================================*
* kbd_open *
*===========================================================================*/
static int
kbd_open(devminor_t minor, int UNUSED(access), endpoint_t UNUSED(user_endpt))
{
struct kbd *kbdp;
if ((kbdp = line2kbd(minor)) == NULL)
return ENXIO;
kbdp->nr_open++;
return OK;
}
/*===========================================================================*
* kbd_close *
*===========================================================================*/
static int
kbd_close(devminor_t minor)
{
struct kbd *kbdp;
if ((kbdp = line2kbd(minor)) == NULL)
return ENXIO;
kbdp->nr_open--;
if (kbdp->nr_open < 0) {
printf("TTY(kbd): open count is negative\n");
kbdp->nr_open= 0;
}
if (kbdp->nr_open == 0)
kbdp->avail= 0;
return OK;
}
/*===========================================================================*
* kbd_read *
*===========================================================================*/
static ssize_t
kbd_read(devminor_t minor, u64_t UNUSED(position), endpoint_t endpt,
cp_grant_id_t grant, size_t size, int flags, cdev_id_t id)
{
ssize_t n, r;
struct kbd *kbdp;
if ((kbdp = line2kbd(minor)) == NULL)
return ENXIO;
/* We handle only one request at a time. */
if (kbdp->req_size)
return EIO;
if ((ssize_t) size <= 0)
return EINVAL;
/* If no data is available, suspend the caller. */
if (kbdp->avail == 0) {
if (flags & FLG_OP_NONBLOCK)
return EAGAIN;
kbdp->req_size = size;
kbdp->req_id = id;
kbdp->req_grant = grant;
kbdp->req_caller = endpt;
return EDONTREPLY;
}
/* Handle read request. */
n = kbdp->avail;
if (n > (ssize_t) size)
n = size;
if (kbdp->offset + n > KBD_BUFSZ)
n = KBD_BUFSZ - kbdp->offset;
if (n <= 0)
panic("do_kbd(READ): bad n: %d", n);
r = sys_safecopyto(endpt, grant, 0,
(vir_bytes) &kbdp->buf[kbdp->offset], n);
if (r == OK) {
kbdp->offset = (kbdp->offset + n) % KBD_BUFSZ;
kbdp->avail -= n;
r = n;
} else
printf("TTY(kbd): copy in read kbd failed: %d\n", r);
return r;
}
/*===========================================================================*
* kbd_write *
*===========================================================================*/
static ssize_t
kbd_write(devminor_t minor, u64_t UNUSED(position), endpoint_t endpt,
cp_grant_id_t grant, size_t size, int flags, cdev_id_t id)
{
struct kbd *kbdp;
unsigned char c;
size_t i;
int r;
if ((kbdp = line2kbd(minor)) == NULL)
return ENXIO;
if (kbdp != &kbdaux) {
printf("TTY(kbd): write to keyboard not implemented\n");
return EINVAL;
}
/*
* Assume that output to AUX only happens during initialization and we
* can afford to lose input. This should be fixed at a later time.
*/
for (i = 0; i < size; i++) {
r = sys_safecopyfrom(endpt, grant, i, (vir_bytes) &c, 1);
if (r != OK)
return i ? i : r;
kbc_cmd1(KBC_WRITE_AUX, c);
}
return r;
}
/*===========================================================================*
* kbd_ioctl *
*===========================================================================*/
static int
kbd_ioctl(devminor_t minor, unsigned long request, endpoint_t endpt,
cp_grant_id_t grant, int flags, endpoint_t UNUSED(user_endpt),
cdev_id_t id)
{
struct kbd *kbdp;
kio_leds_t leds;
kio_bell_t bell;
clock_t ticks;
unsigned char b;
int r;
if ((kbdp = line2kbd(minor)) == NULL)
return ENXIO;
if (kbdp != &kbd)
return ENOTTY; /* we only support ioctls on keyboards now */
switch (request) {
case KIOCSLEDS:
r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) &leds,
sizeof(leds));
if (r != OK)
return r;
b = 0;
if (leds.kl_bits & KBD_LEDS_NUM) b |= NUM_LOCK;
if (leds.kl_bits & KBD_LEDS_CAPS) b |= CAPS_LOCK;
if (leds.kl_bits & KBD_LEDS_SCROLL) b |= SCROLL_LOCK;
if (kbdout.avail == 0)
kbdout.offset = 0;
if (kbdout.offset + kbdout.avail + 2 > KBD_OUT_BUFSZ) {
/* Output buffer is full. Ignore this command.
* Reset ACK flag.
*/
kbdout.expect_ack = 0;
} else {
kbdout.buf[kbdout.offset+kbdout.avail] = LED_CODE;
kbdout.buf[kbdout.offset+kbdout.avail+1] = b;
kbdout.avail += 2;
}
if (!kbdout.expect_ack)
kbd_send();
return OK;
case KIOCBELL:
r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) &bell,
sizeof(bell));
if (r != OK)
return r;
ticks = bell.kb_duration.tv_usec * system_hz / 1000000;
ticks += bell.kb_duration.tv_sec * system_hz;
if (!ticks)
ticks++;
beep_x(bell.kb_pitch, ticks);
return OK;
default:
return ENOTTY;
}
}
/*===========================================================================*
* kbd_cancel *
*===========================================================================*/
static int
kbd_cancel(devminor_t minor, endpoint_t endpt, cdev_id_t id)
{
struct kbd *kbdp;
if ((kbdp = line2kbd(minor)) == NULL)
return ENXIO;
if (kbdp->req_size > 0 && endpt == kbdp->req_caller &&
id == kbdp->req_id)
return EINTR;
return EDONTREPLY;
}
/*===========================================================================*
* kbd_select *
*===========================================================================*/
static int
kbd_select(devminor_t minor, unsigned int ops, endpoint_t endpt)
{
struct kbd *kbdp;
int watch, ready_ops;
if ((kbdp = line2kbd(minor)) == NULL)
return ENXIO;
watch = (ops & SEL_NOTIFY);
ops &= (SEL_RD | SEL_WR | SEL_ERR);
ready_ops = 0;
if (kbdp->avail && (ops & SEL_RD))
ready_ops |= SEL_RD;
if (ops & SEL_WR)
ready_ops |= SEL_WR; /* writes never block */
ops &= ~ready_ops;
if (ops && watch) {
kbdp->select_ops |= ops;
kbdp->select_proc = endpt;
}
return ready_ops;
}
/*===========================================================================*
* do_kbd *
*===========================================================================*/
void do_kbd(message *m)
void
do_kbd(message *m, int ipc_status)
{
handle_req(&kbd, m);
chardriver_process(&kbd_tab, m, ipc_status);
}
/*===========================================================================*
* do_kbdaux *
*===========================================================================*/
void do_kbdaux(message *m)
{
handle_req(&kbdaux, m);
}
/*===========================================================================*
* handle_req *
*===========================================================================*/
static void handle_req(kbdp, m)
struct kbd *kbdp;
message *m;
{
int i, n, r, ops, watch;
unsigned char c;
/* Execute the requested device driver function. */
r= EINVAL; /* just in case */
switch (m->m_type) {
case DEV_OPEN:
kbdp->nr_open++;
tty_reply(DEV_OPEN_REPL, m->m_source, m->USER_ENDPT,
(cp_grant_id_t) m->IO_GRANT, OK);
return;
case DEV_CLOSE:
kbdp->nr_open--;
if (kbdp->nr_open < 0)
{
printf("TTY(kbd): open count is negative\n");
kbdp->nr_open= 0;
}
if (kbdp->nr_open == 0)
kbdp->avail= 0;
tty_reply(DEV_CLOSE_REPL, m->m_source, m->USER_ENDPT,
(cp_grant_id_t) m->IO_GRANT, OK);
return;
case DEV_READ_S:
if (kbdp->req_size)
{
/* We handle only request at a time */
r= EIO;
break;
}
if (kbdp->avail == 0)
{
if (m->FLAGS & FLG_OP_NONBLOCK) {
r = EAGAIN;
break;
}
/* Should record proc */
kbdp->req_size= m->COUNT;
kbdp->req_proc= m->USER_ENDPT;
kbdp->req_grant= (cp_grant_id_t) m->IO_GRANT;
kbdp->req_addr_offset= 0;
kbdp->incaller= m->m_source;
return;
}
/* Handle read request */
n= kbdp->avail;
if (n > m->COUNT)
n= m->COUNT;
if (kbdp->offset + n > KBD_BUFSZ)
n= KBD_BUFSZ-kbdp->offset;
if (n <= 0)
panic("do_kbd(READ): bad n: %d", n);
r= sys_safecopyto(m->m_source, (cp_grant_id_t) m->IO_GRANT, 0,
(vir_bytes) &kbdp->buf[kbdp->offset], n);
if (r == OK)
{
kbdp->offset= (kbdp->offset+n) % KBD_BUFSZ;
kbdp->avail -= n;
r= n;
} else {
printf("copy in read kbd failed: %d\n", r);
}
break;
case DEV_WRITE_S:
if (kbdp != &kbdaux)
{
printf("write to keyboard not implemented\n");
r= EINVAL;
break;
}
/* Assume that output to AUX only happens during
* initialization and we can afford to lose input. This should
* be fixed at a later time.
*/
for (i= 0; i<m->COUNT; i++)
{
r= sys_safecopyfrom(m->m_source, (cp_grant_id_t)
m->IO_GRANT, i, (vir_bytes) &c, 1);
if (r != OK)
break;
kbc_cmd1(KBC_WRITE_AUX, c);
}
r= i;
break;
case CANCEL:
kbdp->req_size= 0;
r= EAGAIN;
break;
case DEV_SELECT:
ops = m->DEV_SEL_OPS & (SEL_RD|SEL_WR|SEL_ERR);
watch = (m->DEV_SEL_OPS & SEL_NOTIFY) ? 1 : 0;
r= 0;
if (kbdp->avail && (ops & SEL_RD))
{
r |= SEL_RD;
break;
}
if (ops && watch)
{
kbdp->select_ops |= ops;
kbdp->select_proc= m->m_source;
kbdp->select_minor= m->DEV_MINOR;
}
assert(kbdp->minor == m->DEV_MINOR);
select_reply(DEV_SEL_REPL1, m->m_source, m->DEV_MINOR, r);
return;
case DEV_IOCTL_S:
if (kbdp == &kbd && m->REQUEST == KIOCSLEDS)
{
kio_leds_t leds;
unsigned char b;
r= sys_safecopyfrom(m->m_source, (cp_grant_id_t)
m->IO_GRANT, 0, (vir_bytes) &leds,
sizeof(leds));
if (r != OK)
break;
b= 0;
if (leds.kl_bits & KBD_LEDS_NUM) b |= NUM_LOCK;
if (leds.kl_bits & KBD_LEDS_CAPS) b |= CAPS_LOCK;
if (leds.kl_bits & KBD_LEDS_SCROLL) b |= SCROLL_LOCK;
if (kbdout.avail == 0)
kbdout.offset= 0;
if (kbdout.offset + kbdout.avail + 2 > KBD_OUT_BUFSZ)
{
/* Output buffer is full. Ignore this command.
* Reset ACK flag.
*/
kbdout.expect_ack= 0;
}
else
{
kbdout.buf[kbdout.offset+kbdout.avail]=
LED_CODE;
kbdout.buf[kbdout.offset+kbdout.avail+1]= b;
kbdout.avail += 2;
}
if (!kbdout.expect_ack)
kbd_send();
r= OK;
break;
}
if (kbdp == &kbd && m->REQUEST == KIOCBELL)
{
kio_bell_t bell;
clock_t ticks;
r = sys_safecopyfrom(m->m_source, (cp_grant_id_t)
m->IO_GRANT, 0, (vir_bytes) &bell,
sizeof(bell));
if (r != OK)
break;
ticks= bell.kb_duration.tv_usec * system_hz / 1000000;
ticks += bell.kb_duration.tv_sec * system_hz;
if (!ticks)
ticks++;
beep_x(bell.kb_pitch, ticks);
r= OK;
break;
}
r= ENOTTY;
break;
default:
printf("Warning, TTY(kbd) got unexpected request %d from %d\n",
m->m_type, m->m_source);
r= EINVAL;
}
tty_reply(DEV_REVIVE, m->m_source, m->USER_ENDPT,
(cp_grant_id_t) m->IO_GRANT, r);
}
/*===========================================================================*
* map_key *
*===========================================================================*/
@ -469,7 +530,7 @@ void kbd_interrupt(message *UNUSED(m_ptr))
if (n <= 0)
panic("kbd_interrupt: bad n: %d", n);
kbdp->req_size= 0;
r= sys_safecopyto(kbdp->incaller, kbdp->req_grant, 0,
r= sys_safecopyto(kbdp->req_caller, kbdp->req_grant, 0,
(vir_bytes)&kbdp->buf[kbdp->offset], n);
if (r == OK)
{
@ -478,14 +539,12 @@ void kbd_interrupt(message *UNUSED(m_ptr))
r= n;
} else printf("copy in revive kbd failed: %d\n", r);
tty_reply(DEV_REVIVE, kbdp->incaller, kbdp->req_proc,
kbdp->req_grant, r);
kbdp->req_grant = GRANT_INVALID;
chardriver_reply_task(kbdp->req_caller, kbdp->req_id, r);
kbdp->req_caller = NONE;
}
/* Only satisfy pending select if characters weren't just read. */
if (kbdp->avail && (kbdp->select_ops & SEL_RD)) {
assert(kbdp->select_minor == kbdp->minor);
select_reply(DEV_SEL_REPL2, kbdp->select_proc, kbdp->minor,
chardriver_reply_select(kbdp->select_proc, kbdp->minor,
SEL_RD);
kbdp->select_ops &= ~SEL_RD;
}
@ -1024,12 +1083,10 @@ void kb_init_once(void)
/*===========================================================================*
* kbd_loadmap *
*===========================================================================*/
int kbd_loadmap(m)
message *m;
int kbd_loadmap(endpoint_t endpt, cp_grant_id_t grant)
{
/* Load a new keymap. */
return sys_safecopyfrom(m->m_source, (cp_grant_id_t) m->IO_GRANT,
0, (vir_bytes) keymap, (vir_bytes) sizeof(keymap));
return sys_safecopyfrom(endpt, grant, 0, (vir_bytes) keymap, sizeof(keymap));
}
/*===========================================================================*

17
drivers/tty/arch/i386/rs232.c
View file

@ -246,10 +246,11 @@ static int rs_write(register tty_t *tp, int try)
/* Copy from user space to the RS232 output buffer. */
if (tp->tty_outcaller == KERNEL) {
/* We're trying to print on kernel's behalf */
memcpy(rs->ohead, (void *) tp->tty_outgrant + tp->tty_outoffset, count);
memcpy(rs->ohead, (char *) tp->tty_outgrant + tp->tty_outcum,
count);
} else {
if ((r = sys_safecopyfrom(tp->tty_outcaller, tp->tty_outgrant,
tp->tty_outoffset, (vir_bytes) rs->ohead, count)) != OK)
tp->tty_outcum, (vir_bytes) rs->ohead, count)) != OK)
printf("TTY: sys_safecopyfrom() failed: %d", r);
}
@ -265,22 +266,20 @@ static int rs_write(register tty_t *tp, int try)
rs_ostart(rs);
if ((rs->ohead += ocount) >= bufend(rs->obuf))
rs->ohead -= buflen(rs->obuf);
tp->tty_outoffset += count;
tp->tty_outcum += count;
if ((tp->tty_outleft -= count) == 0) {
/* Output is finished, reply to the writer. */
tty_reply(DEV_REVIVE, tp->tty_outcaller, tp->tty_outproc,
tp->tty_outgrant, tp->tty_outcum);
chardriver_reply_task(tp->tty_outcaller, tp->tty_outid,
tp->tty_outcum);
tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
tp->tty_outcaller = NONE;
}
}
if (tp->tty_outleft > 0 && tp->tty_termios.c_ospeed == B0) {
/* Oops, the line has hung up. */
tty_reply(DEV_REVIVE, tp->tty_outcaller, tp->tty_outproc,
tp->tty_outgrant, EIO);
chardriver_reply_task(tp->tty_outcaller, tp->tty_outid, EIO);
tp->tty_outleft = tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
tp->tty_outcaller = NONE;
}
return 1;

626
drivers/tty/pty.c
View file

@ -9,20 +9,16 @@
* This file takes care of copying data between the tty/pty device pairs and
* the open/read/write/close calls on the pty devices. The TTY task takes
* care of the input and output processing (interrupt, backspace, raw I/O,
* etc.) using the pty_read() and pty_write() functions as the "keyboard" and
* "screen" functions of the ttypX devices.
* etc.) using the pty_slave_read() and pty_slave_write() functions as the
* "keyboard" and "screen" functions of the ttypX devices.
* Be careful when reading this code, the terms "reading" and "writing" are
* used both for the tty and the pty end of the pseudo tty. Writes to one
* end are to be read at the other end and vice-versa.
* used both for the tty (slave) and the pty (master) end of the pseudo tty.
* Writes to one end are to be read at the other end and vice-versa.
*/
#include <minix/drivers.h>
#include <assert.h>
#include <termios.h>
#include <signal.h>
#include <minix/com.h>
#include <minix/callnr.h>
#include <sys/select.h>
#include "tty.h"
#if NR_PTYS > 0
@ -32,21 +28,19 @@ typedef struct pty {
tty_t *tty; /* associated TTY structure */
char state; /* flags: busy, closed, ... */
/* Read call on /dev/ptypX. */
int rdcaller; /* process making the call (usually FS) */
int rdproc; /* process that wants to read from the pty */
cp_grant_id_t rdgrant; /* grant for readers address space */
vir_bytes rdoffset; /* offset in above grant */
int rdleft; /* # bytes yet to be read */
int rdcum; /* # bytes written so far */
/* Read call on master (/dev/ptypX). */
endpoint_t rdcaller; /* process making the call, or NONE if none */
cdev_id_t rdid; /* ID of suspended read request */
cp_grant_id_t rdgrant; /* grant for reader's address space */
size_t rdleft; /* # bytes yet to be read */
size_t rdcum; /* # bytes written so far */
/* Write call to /dev/ptypX. */
int wrcaller; /* process making the call (usually FS) */
int wrproc; /* process that wants to write to the pty */
cp_grant_id_t wrgrant; /* grant for writers address space */
vir_bytes wroffset; /* offset in above grant */
int wrleft; /* # bytes yet to be written */
int wrcum; /* # bytes written so far */
/* Write call to master (/dev/ptypX). */
endpoint_t wrcaller; /* process making the call, or NONE if none*/
cdev_id_t wrid; /* ID of suspended write request */
cp_grant_id_t wrgrant; /* grant for writer's address space */
size_t wrleft; /* # bytes yet to be written */
size_t wrcum; /* # bytes written so far */
/* Output buffer. */
int ocount; /* # characters in the buffer */
@ -54,9 +48,8 @@ typedef struct pty {
char obuf[2048]; /* buffer for bytes going to the pty reader */
/* select() data. */
int select_ops; /* Which operations do we want to know about? */
int select_proc; /* Who wants to know about it? */
dev_t select_minor; /* sanity check only, can be removed */
unsigned int select_ops; /* Which operations do we want to know about? */
endpoint_t select_proc; /* Who wants to know about it? */
} pty_t;
#define TTY_ACTIVE 0x01 /* tty is open/active */
@ -66,159 +59,288 @@ typedef struct pty {
static pty_t pty_table[NR_PTYS]; /* PTY bookkeeping */
static int pty_write(tty_t *tp, int try);
static void pty_echo(tty_t *tp, int c);
static void pty_start(pty_t *pp);
static void pty_finish(pty_t *pp);
static int pty_read(tty_t *tp, int try);
static int pty_close(tty_t *tp, int try);
static int pty_icancel(tty_t *tp, int try);
static int pty_ocancel(tty_t *tp, int try);
static void pty_select(tty_t *tp, message *m);
static int pty_master_open(devminor_t minor, int access,
endpoint_t user_endpt);
static int pty_master_close(devminor_t minor);
static ssize_t pty_master_read(devminor_t minor, u64_t position,
endpoint_t endpt, cp_grant_id_t grant, size_t size, int flags,
cdev_id_t id);
static ssize_t pty_master_write(devminor_t minor, u64_t position,
endpoint_t endpt, cp_grant_id_t grant, size_t size, int flags,
cdev_id_t id);
static int pty_master_cancel(devminor_t minor, endpoint_t endpt, cdev_id_t id);
static int pty_master_select(devminor_t minor, unsigned int ops,
endpoint_t endpt);
static struct chardriver pty_master_tab = {
.cdr_open = pty_master_open,
.cdr_close = pty_master_close,
.cdr_read = pty_master_read,
.cdr_write = pty_master_write,
.cdr_cancel = pty_master_cancel,
.cdr_select = pty_master_select
};
/*===========================================================================*
* pty_master_open *
*===========================================================================*/
static int pty_master_open(devminor_t minor, int UNUSED(access),
endpoint_t UNUSED(user_endpt))
{
tty_t *tp;
pty_t *pp;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
pp = tp->tty_priv;
if (pp->state & PTY_ACTIVE)
return EIO;
pp->state |= PTY_ACTIVE;
pp->rdcum = 0;
pp->wrcum = 0;
return OK;
}
/*===========================================================================*
* pty_master_close *
*===========================================================================*/
static int pty_master_close(devminor_t minor)
{
tty_t *tp;
pty_t *pp;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
pp = tp->tty_priv;
if ((pp->state & (TTY_ACTIVE | TTY_CLOSED)) != TTY_ACTIVE) {
pp->state = 0;
} else {
pp->state |= PTY_CLOSED;
sigchar(tp, SIGHUP, 1);
}
return OK;
}
/*===========================================================================*
* pty_master_read *
*===========================================================================*/
static ssize_t pty_master_read(devminor_t minor, u64_t UNUSED(position),
endpoint_t endpt, cp_grant_id_t grant, size_t size, int flags,
cdev_id_t id)
{
tty_t *tp;
pty_t *pp;
ssize_t r;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
pp = tp->tty_priv;
/* Check, store information on the reader, do I/O. */
if (pp->state & TTY_CLOSED)
return 0; /* EOF */
if (pp->rdcaller != NONE || pp->rdleft != 0 || pp->rdcum != 0)
return EIO;
if (size <= 0)
return EINVAL;
pp->rdcaller = endpt;
pp->rdid = id;
pp->rdgrant = grant;
pp->rdleft = size;
pty_start(pp);
handle_events(tp);
if (pp->rdleft == 0) {
pp->rdcaller = NONE;
return EDONTREPLY; /* already done */
}
if (flags & FLG_OP_NONBLOCK) {
r = pp->rdcum > 0 ? pp->rdcum : EAGAIN;
pp->rdleft = pp->rdcum = 0;
pp->rdcaller = NONE;
return r;
}
return EDONTREPLY; /* do suspend */
}
/*===========================================================================*
* pty_master_write *
*===========================================================================*/
static ssize_t pty_master_write(devminor_t minor, u64_t UNUSED(position),
endpoint_t endpt, cp_grant_id_t grant, size_t size, int flags,
cdev_id_t id)
{
tty_t *tp;
pty_t *pp;
ssize_t r;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
pp = tp->tty_priv;
/* Check, store information on the writer, do I/O. */
if (pp->state & TTY_CLOSED)
return EIO;
if (pp->wrcaller != NONE || pp->wrleft != 0 || pp->wrcum != 0)
return EIO;
if (size <= 0)
return EINVAL;
pp->wrcaller = endpt;
pp->wrid = id;
pp->wrgrant = grant;
pp->wrleft = size;
handle_events(tp);
if (pp->wrleft == 0) {
pp->wrcaller = NONE;
return EDONTREPLY; /* already done */
}
if (flags & FLG_OP_NONBLOCK) {
r = pp->wrcum > 0 ? pp->wrcum : EAGAIN;
pp->wrleft = pp->wrcum = 0;
pp->wrcaller = NONE;
return r;
}
return EDONTREPLY; /* do suspend */
}
/*===========================================================================*
* pty_master_cancel *
*===========================================================================*/
static int pty_master_cancel(devminor_t minor, endpoint_t endpt, cdev_id_t id)
{
tty_t *tp;
pty_t *pp;
int r;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
pp = tp->tty_priv;
if (pp->rdcaller == endpt && pp->rdid == id) {
/* Cancel a read from a PTY. */
r = pp->rdcum > 0 ? pp->rdcum : EINTR;
pp->rdleft = pp->rdcum = 0;
pp->rdcaller = NONE;
return r;
}
if (pp->wrcaller == endpt && pp->wrid == id) {
/* Cancel a write to a PTY. */
r = pp->wrcum > 0 ? pp->wrcum : EINTR;
pp->wrleft = pp->wrcum = 0;
pp->wrcaller = NONE;
return r;
}
/* Request not found. */
return EDONTREPLY;
}
/*===========================================================================*
* select_try_pty *
*===========================================================================*/
static int select_try_pty(tty_t *tp, int ops)
{
pty_t *pp = tp->tty_priv;
int r = 0;
if (ops & SEL_WR) {
/* Write won't block on error. */
if (pp->state & TTY_CLOSED) r |= SEL_WR;
else if (pp->wrleft != 0 || pp->wrcum != 0) r |= SEL_WR;
else if (tp->tty_inleft > 0) r |= SEL_WR; /* There's a reader. */
}
if (ops & SEL_RD) {
/* Read won't block on error. */
if (pp->state & TTY_CLOSED) r |= SEL_RD;
else if (pp->rdleft != 0 || pp->rdcum != 0) r |= SEL_RD;
else if (pp->ocount > 0) r |= SEL_RD; /* Actual data. */
}
return r;
}
/*===========================================================================*
* select_retry_pty *
*===========================================================================*/
void select_retry_pty(tty_t *tp)
{
pty_t *pp = tp->tty_priv;
devminor_t minor;
int r;
/* See if the pty side of a pty is ready to return a select. */
if (pp->select_ops && (r = select_try_pty(tp, pp->select_ops))) {
minor = PTYPX_MINOR + (int) (pp - pty_table);
chardriver_reply_select(pp->select_proc, minor, r);
pp->select_ops &= ~r;
}
}
/*===========================================================================*
* pty_master_select *
*===========================================================================*/
static int pty_master_select(devminor_t minor, unsigned int ops,
endpoint_t endpt)
{
tty_t *tp;
pty_t *pp;
int ready_ops, watch;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
pp = tp->tty_priv;
watch = (ops & SEL_NOTIFY);
ops &= (SEL_RD | SEL_WR | SEL_ERR);
ready_ops = select_try_pty(tp, ops);
ops &= ~ready_ops;
if (ops && watch) {
pp->select_ops |= ops;
pp->select_proc = endpt;
}
return ready_ops;
}
/*===========================================================================*
* do_pty *
*===========================================================================*/
void do_pty(tty_t *tp, message *m_ptr)
void do_pty(message *m_ptr, int ipc_status)
{
/* Perform an open/close/read/write call on a /dev/ptypX device. */
pty_t *pp = tp->tty_priv;
int r;
/* Process a request for a PTY master (/dev/ptypX) device. */
switch (m_ptr->m_type) {
case DEV_READ_S:
/* Check, store information on the reader, do I/O. */
if (pp->state & TTY_CLOSED) {
r = 0;
break;
}
if (pp->rdleft != 0 || pp->rdcum != 0) {
r = EIO;
break;
}
if (m_ptr->COUNT <= 0) {
r = EINVAL;
break;
}
if (pp->rdgrant != GRANT_INVALID) {
r = ENOBUFS;
break;
}
pp->rdcaller = m_ptr->m_source;
pp->rdproc = m_ptr->USER_ENDPT;
pp->rdgrant = (cp_grant_id_t) m_ptr->IO_GRANT;
pp->rdoffset = 0;
pp->rdleft = m_ptr->COUNT;
pty_start(pp);
handle_events(tp);
if (pp->rdleft == 0) {
pp->rdgrant = GRANT_INVALID;
return; /* already done */
}
if (m_ptr->FLAGS & FLG_OP_NONBLOCK) {
r = pp->rdcum > 0 ? pp->rdcum : EAGAIN;
pp->rdleft = pp->rdcum = 0;
pp->rdgrant = GRANT_INVALID;
} else {
return; /* do suspend */
}
break;
case DEV_WRITE_S:
/* Check, store information on the writer, do I/O. */
if (pp->state & TTY_CLOSED) {
r = EIO;
break;
}
if (pp->wrleft != 0 || pp->wrcum != 0) {
r = EIO;
break;
}
if (m_ptr->COUNT <= 0) {
r = EINVAL;
break;
}
if (pp->wrgrant != GRANT_INVALID) {
r = ENOBUFS;
break;
}
pp->wrcaller = m_ptr->m_source;
pp->wrproc = m_ptr->USER_ENDPT;
pp->wrgrant = (cp_grant_id_t) m_ptr->IO_GRANT;
pp->wroffset = 0;
pp->wrleft = m_ptr->COUNT;
handle_events(tp);
if (pp->wrleft == 0) {
pp->wrgrant = GRANT_INVALID;
return; /* already done */
}
if (m_ptr->FLAGS & FLG_OP_NONBLOCK) {
r = pp->wrcum > 0 ? pp->wrcum : EAGAIN;
pp->wrleft = pp->wrcum = 0;
pp->wrgrant = GRANT_INVALID;
r = EAGAIN;
} else {
return; /* do suspend */
}
break;
case DEV_OPEN:
if (!(pp->state & PTY_ACTIVE)) {
pp->state |= PTY_ACTIVE;
pp->rdcum = 0;
pp->wrcum = 0;
r = OK;
} else {
r = EIO;
}
tty_reply(DEV_OPEN_REPL, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, r);
return;
case DEV_CLOSE:
if ((pp->state & (TTY_ACTIVE | TTY_CLOSED)) != TTY_ACTIVE) {
pp->state = 0;
} else {
pp->state |= PTY_CLOSED;
sigchar(tp, SIGHUP, 1);
}
tty_reply(DEV_CLOSE_REPL, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, OK);
return;
case DEV_SELECT:
pty_select(tp, m_ptr);
return;
case CANCEL:
r = EINTR;
if (m_ptr->USER_ENDPT == pp->rdproc) {
/* Cancel a read from a PTY. */
r = pp->rdcum > 0 ? pp->rdcum : EAGAIN;
pp->rdleft = pp->rdcum = 0;
pp->rdgrant = GRANT_INVALID;
}
if (m_ptr->USER_ENDPT == pp->wrproc) {
/* Cancel a write to a PTY. */
r = pp->wrcum > 0 ? pp->wrcum : EAGAIN;
pp->wrleft = pp->wrcum = 0;
pp->wrgrant = GRANT_INVALID;
}
break;
default:
r = EINVAL;
}
tty_reply(DEV_REVIVE, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, r);
chardriver_process(&pty_master_tab, m_ptr, ipc_status);
}
/*===========================================================================*
* pty_write *
* pty_slave_write *
*===========================================================================*/
static int pty_write(tty_t *tp, int try)
static int pty_slave_write(tty_t *tp, int try)
{
/* (*dev_write)() routine for PTYs. Transfer bytes from the writer on
* /dev/ttypX to the output buffer.
@ -226,15 +348,13 @@ static int pty_write(tty_t *tp, int try)
pty_t *pp = tp->tty_priv;
int count, ocount, s;
/* PTY closed down? */
if (pp->state & PTY_CLOSED) {
if (try) return 1;
if (tp->tty_outleft > 0) {
tty_reply(DEV_REVIVE, tp->tty_outcaller, tp->tty_outproc,
tp->tty_outgrant, EIO);
chardriver_reply_task(tp->tty_outcaller, tp->tty_outid, EIO);
tp->tty_outleft = tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
tp->tty_outcaller = NONE;
}
return 0;
}
@ -252,11 +372,11 @@ static int pty_write(tty_t *tp, int try)
/* Copy from user space to the PTY output buffer. */
if (tp->tty_outcaller == KERNEL) {
/* We're trying to print on kernel's behalf */
memcpy(pp->ohead, (void *) tp->tty_outgrant + tp->tty_outoffset,
memcpy(pp->ohead, (void *) tp->tty_outgrant + tp->tty_outcum,
count);
} else {
if ((s = sys_safecopyfrom(tp->tty_outcaller, tp->tty_outgrant,
tp->tty_outoffset, (vir_bytes) pp->ohead,
tp->tty_outcum, (vir_bytes) pp->ohead,
count)) != OK) {
break;
}
@ -275,15 +395,13 @@ static int pty_write(tty_t *tp, int try)
pp->ohead -= buflen(pp->obuf);
pty_start(pp);
tp->tty_outoffset += count;
tp->tty_outcum += count;
if ((tp->tty_outleft -= count) == 0) {
/* Output is finished, reply to the writer. */
tty_reply(DEV_REVIVE, tp->tty_outcaller, tp->tty_outproc,
tp->tty_outgrant, tp->tty_outcum);
chardriver_reply_task(tp->tty_outcaller, tp->tty_outid,
tp->tty_outcum);
tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
tp->tty_outcaller = NONE;
}
}
pty_finish(pp);
@ -291,9 +409,9 @@ static int pty_write(tty_t *tp, int try)
}
/*===========================================================================*
* pty_echo *
* pty_slave_echo *
*===========================================================================*/
static void pty_echo(tty_t *tp, int c)
static void pty_slave_echo(tty_t *tp, int c)
{
/* Echo one character. (Like pty_write, but only one character, optionally.) */
@ -330,11 +448,10 @@ static void pty_start(pty_t *pp)
if (count == 0) break;
/* Copy from the output buffer to the readers address space. */
if((s = sys_safecopyto(pp->rdcaller, pp->rdgrant,
pp->rdoffset, (vir_bytes) pp->otail, count)) != OK) {
if((s = sys_safecopyto(pp->rdcaller, pp->rdgrant, pp->rdcum,
(vir_bytes) pp->otail, count)) != OK) {
break;
}
pp->rdoffset += count;
/* Bookkeeping. */
pp->ocount -= count;
@ -352,19 +469,18 @@ static void pty_finish(pty_t *pp)
/* Finish the read request of a PTY reader if there is at least one byte
* transferred.
*/
if (pp->rdcum > 0) {
tty_reply(DEV_REVIVE, pp->rdcaller, pp->rdproc, pp->rdgrant,
pp->rdcum);
pp->rdleft = pp->rdcum = 0;
pp->rdgrant = GRANT_INVALID;
}
if (pp->rdcum > 0) {
chardriver_reply_task(pp->rdcaller, pp->rdid, pp->rdcum);
pp->rdleft = pp->rdcum = 0;
pp->rdcaller = NONE;
}
}
/*===========================================================================*
* pty_read *
* pty_slave_read *
*===========================================================================*/
static int pty_read(tty_t *tp, int try)
static int pty_slave_read(tty_t *tp, int try)
{
/* Offer bytes from the PTY writer for input on the TTY. (Do it one byte at
* a time, 99% of the writes will be for one byte, so no sense in being smart.)
@ -375,10 +491,10 @@ static int pty_read(tty_t *tp, int try)
if (pp->state & PTY_CLOSED) {
if (try) return 1;
if (tp->tty_inleft > 0) {
tty_reply(DEV_REVIVE, tp->tty_incaller, tp->tty_inproc,
tp->tty_ingrant, tp->tty_incum);
chardriver_reply_task(tp->tty_incaller, tp->tty_inid,
tp->tty_incum);
tp->tty_inleft = tp->tty_incum = 0;
tp->tty_ingrant = GRANT_INVALID;
tp->tty_incaller = NONE;
}
return 1;
}
@ -393,12 +509,11 @@ static int pty_read(tty_t *tp, int try)
int s;
/* Transfer one character to 'c'. */
if ((s = sys_safecopyfrom(pp->wrcaller, pp->wrgrant, pp->wroffset,
if ((s = sys_safecopyfrom(pp->wrcaller, pp->wrgrant, pp->wrcum,
(vir_bytes) &c, 1)) != OK) {
printf("pty: safecopy failed (error %d)\n", s);
break;
}
pp->wroffset++;
/* Input processing. */
if (in_process(tp, &c, 1, -1) == 0) break;
@ -406,10 +521,9 @@ static int pty_read(tty_t *tp, int try)
/* PTY writer bookkeeping. */
pp->wrcum++;
if (--pp->wrleft == 0) {
tty_reply(DEV_REVIVE, pp->wrcaller, pp->wrproc, pp->wrgrant,
pp->wrcum);
chardriver_reply_task(pp->wrcaller, pp->wrid, pp->wrcum);
pp->wrcum = 0;
pp->wrgrant = GRANT_INVALID;
pp->wrcaller = NONE;
}
}
@ -417,9 +531,9 @@ static int pty_read(tty_t *tp, int try)
}
/*===========================================================================*
* pty_open *
* pty_slave_open *
*===========================================================================*/
static int pty_open(tty_t *tp, int UNUSED(try))
static int pty_slave_open(tty_t *tp, int UNUSED(try))
{
/* The tty side has been opened. */
pty_t *pp = tp->tty_priv;
@ -435,9 +549,9 @@ static int pty_open(tty_t *tp, int UNUSED(try))
}
/*===========================================================================*
* pty_close *
* pty_slave_close *
*===========================================================================*/
static int pty_close(tty_t *tp, int UNUSED(try))
static int pty_slave_close(tty_t *tp, int UNUSED(try))
{
/* The tty side has closed, so shut down the pty side. */
pty_t *pp = tp->tty_priv;
@ -445,17 +559,15 @@ static int pty_close(tty_t *tp, int UNUSED(try))
if (!(pp->state & PTY_ACTIVE)) return 0;
if (pp->rdleft > 0) {
tty_reply(DEV_REVIVE, pp->rdcaller, pp->rdproc, pp->rdgrant,
pp->rdcum);
chardriver_reply_task(pp->rdcaller, pp->rdid, pp->rdcum);
pp->rdleft = pp->rdcum = 0;
pp->rdgrant = GRANT_INVALID;
pp->rdcaller = NONE;
}
if (pp->wrleft > 0) {
tty_reply(DEV_REVIVE, pp->wrcaller, pp->wrproc, pp->wrgrant,
pp->wrcum);
pp->wrcum = 0;
pp->wrgrant = GRANT_INVALID;
chardriver_reply_task(pp->wrcaller, pp->wrid, pp->wrcum);
pp->wrleft = pp->wrcum = 0;
pp->wrcaller = NONE;
}
if (pp->state & PTY_CLOSED) pp->state = 0;
@ -465,27 +577,26 @@ static int pty_close(tty_t *tp, int UNUSED(try))
}
/*===========================================================================*
* pty_icancel *
* pty_slave_icancel *
*===========================================================================*/
static int pty_icancel(tty_t *tp, int UNUSED(try))
static int pty_slave_icancel(tty_t *tp, int UNUSED(try))
{
/* Discard waiting input. */
pty_t *pp = tp->tty_priv;
if (pp->wrleft > 0) {
tty_reply(DEV_REVIVE, pp->wrcaller, pp->wrproc, pp->wrgrant,
pp->wrcum + pp->wrleft);
chardriver_reply_task(pp->wrcaller, pp->wrid, pp->wrcum + pp->wrleft);
pp->wrcum = pp->wrleft = 0;
pp->wrgrant = GRANT_INVALID;
pp->wrcaller = NONE;
}
return 0;
}
/*===========================================================================*
* pty_ocancel *
* pty_slave_ocancel *
*===========================================================================*/
static int pty_ocancel(tty_t *tp, int UNUSED(try))
static int pty_slave_ocancel(tty_t *tp, int UNUSED(try))
{
/* Drain the output buffer. */
pty_t *pp = tp->tty_priv;
@ -509,86 +620,21 @@ void pty_init(tty_t *tp)
pp = tp->tty_priv = &pty_table[line];
pp->tty = tp;
pp->select_ops = 0;
pp->rdgrant = GRANT_INVALID;
pp->wrgrant = GRANT_INVALID;
pp->rdcaller = NONE;
pp->wrcaller = NONE;
/* Set up output queue. */
pp->ohead = pp->otail = pp->obuf;
/* Fill in TTY function hooks. */
tp->tty_devread = pty_read;
tp->tty_devwrite = pty_write;
tp->tty_echo = pty_echo;
tp->tty_icancel = pty_icancel;
tp->tty_ocancel = pty_ocancel;
tp->tty_open = pty_open;
tp->tty_close = pty_close;
tp->tty_devread = pty_slave_read;
tp->tty_devwrite = pty_slave_write;
tp->tty_echo = pty_slave_echo;
tp->tty_icancel = pty_slave_icancel;
tp->tty_ocancel = pty_slave_ocancel;
tp->tty_open = pty_slave_open;
tp->tty_close = pty_slave_close;
tp->tty_select_ops = 0;
}
/*===========================================================================*
* select_try_pty *
*===========================================================================*/
static int select_try_pty(tty_t *tp, int ops)
{
pty_t *pp = tp->tty_priv;
int r = 0;
if (ops & SEL_WR) {
/* Write won't block on error. */
if (pp->state & TTY_CLOSED) r |= SEL_WR;
else if (pp->wrleft != 0 || pp->wrcum != 0) r |= SEL_WR;
else r |= SEL_WR;
}
if (ops & SEL_RD) {
/* Read won't block on error. */
if (pp->state & TTY_CLOSED) r |= SEL_RD;
else if (pp->rdleft != 0 || pp->rdcum != 0) r |= SEL_RD;
else if (pp->ocount > 0) r |= SEL_RD; /* Actual data. */
}
return r;
}
/*===========================================================================*
* select_retry_pty *
*===========================================================================*/
void select_retry_pty(tty_t *tp)
{
pty_t *pp = tp->tty_priv;
dev_t minor;
int r;
/* See if the pty side of a pty is ready to return a select. */
if (pp->select_ops && (r=select_try_pty(tp, pp->select_ops))) {
minor = PTYPX_MINOR + (int) (pp - pty_table);
assert(minor == pp->select_minor);
select_reply(DEV_SEL_REPL2, pp->select_proc, minor, r);
pp->select_ops &= ~r;
}
}
/*===========================================================================*
* pty_select *
*===========================================================================*/
static void pty_select(tty_t *tp, message *m)
{
pty_t *pp = tp->tty_priv;
int ops, ready_ops = 0, watch;
ops = m->DEV_SEL_OPS & (SEL_RD|SEL_WR|SEL_ERR);
watch = (m->DEV_SEL_OPS & SEL_NOTIFY) ? 1 : 0;
ready_ops = select_try_pty(tp, ops);
if (!ready_ops && ops && watch) {
pp->select_ops |= ops;
pp->select_proc = m->m_source;
pp->select_minor = m->DEV_MINOR;
}
select_reply(DEV_SEL_REPL1, m->m_source, m->DEV_MINOR, ready_ops);
}
#endif /* NR_PTYS > 0 */

624
drivers/tty/tty.c
View file

@ -60,11 +60,7 @@
#include <termios.h>
#include <sys/ioc_tty.h>
#include <signal.h>
#include <minix/callnr.h>
#include <minix/sys_config.h>
#include <minix/tty.h>
#include <minix/keymap.h>
#include <minix/endpoint.h>
#include "tty.h"
#include <sys/time.h>
@ -101,13 +97,6 @@ struct kmessages kmess;
static void tty_timed_out(timer_t *tp);
static void settimer(tty_t *tty_ptr, int enable);
static void do_cancel(tty_t *tp, message *m_ptr);
static void do_ioctl(tty_t *tp, message *m_ptr);
static void do_open(tty_t *tp, message *m_ptr);
static void do_close(tty_t *tp, message *m_ptr);
static void do_read(tty_t *tp, message *m_ptr);
static void do_write(tty_t *tp, message *m_ptr);
static void do_select(tty_t *tp, message *m_ptr);
static void in_transfer(tty_t *tp);
static int tty_echo(tty_t *tp, int ch);
static void rawecho(tty_t *tp, int ch);
@ -118,12 +107,32 @@ static void setattr(tty_t *tp);
static void tty_icancel(tty_t *tp);
static void tty_init(void);
static void do_new_kmess(void);
static tty_t * line2tty(int line);
static void set_console_line(char term[CONS_ARG]);
static void set_kernel_color(char color[CONS_ARG]);
static void set_color(tty_t *tp, int color);
static void reset_color(tty_t *tp);
static int do_open(devminor_t minor, int access, endpoint_t user_endpt);
static int do_close(devminor_t minor);
static ssize_t do_read(devminor_t minor, u64_t position, endpoint_t endpt,
cp_grant_id_t grant, size_t size, int flags, cdev_id_t id);
static ssize_t do_write(devminor_t minor, u64_t position, endpoint_t endpt,
cp_grant_id_t grant, size_t size, int flags, cdev_id_t id);
static int do_ioctl(devminor_t minor, unsigned long request, endpoint_t endpt,
cp_grant_id_t grant, int flags, endpoint_t user_endpt, cdev_id_t id);
static int do_cancel(devminor_t minor, endpoint_t endpt, cdev_id_t id);
static int do_select(devminor_t minor, unsigned int ops, endpoint_t endpt);
static struct chardriver tty_tab = {
.cdr_open = do_open,
.cdr_close = do_close,
.cdr_read = do_read,
.cdr_write = do_write,
.cdr_ioctl = do_ioctl,
.cdr_cancel = do_cancel,
.cdr_select = do_select
};
/* Default attributes. */
static struct termios termios_defaults = {
TINPUT_DEF, TOUTPUT_DEF, TCTRL_DEF, TLOCAL_DEF,
@ -160,7 +169,7 @@ int main(void)
message tty_mess; /* buffer for all incoming messages */
int ipc_status;
unsigned line;
int r, code;
int r;
register tty_t *tp;
/* SEF local startup. */
@ -217,7 +226,6 @@ int main(void)
switch (tty_mess.m_type) {
case TTY_FKEY_CONTROL: /* (un)register a fkey observer */
case OLD_FKEY_CONTROL: /* old number */
do_fkey_ctl(&tty_mess);
continue;
case INPUT_EVENT:
@ -227,76 +235,34 @@ int main(void)
; /* do nothing; end switch */
}
if (!IS_DEV_RQ(tty_mess.m_type)) {
chardriver_process(&tty_tab, &tty_mess, ipc_status);
continue;
}
/* Only device requests should get to this point.
* All requests have a minor device number.
*/
line = tty_mess.DEVICE;
if (line == CONS_MINOR || line == LOG_MINOR) {
/* /dev/log output goes to /dev/console */
if (consoleline != CONS_MINOR) {
/* Console output must redirected */
line = consoleline;
tty_mess.DEVICE = line;
}
}
if (line == KBD_MINOR) {
do_kbd(&tty_mess);
continue;
} else if (line == KBDAUX_MINOR) {
do_kbdaux(&tty_mess);
if (line == KBD_MINOR || line == KBDAUX_MINOR) {
do_kbd(&tty_mess, ipc_status);
continue;
} else if (line == VIDEO_MINOR) {
do_video(&tty_mess);
do_video(&tty_mess, ipc_status);
continue;
} else {
tp = line2tty(line);
} else if (line - PTYPX_MINOR < NR_PTYS &&
tty_mess.m_type != DEV_IOCTL_S) {
/* Terminals and pseudo terminals belong together. We can only
* make a distinction between the two based on position in the
* tty_table and not on minor number (i.e., use ispty macro).
* Hence this special case.
*/
if (line - PTYPX_MINOR < NR_PTYS &&
tty_mess.m_type != DEV_IOCTL_S){
do_pty(tp, &tty_mess);
continue;
}
}
/* If the device doesn't exist or is not configured return ENXIO. */
if (tp == NULL || ! tty_active(tp)) {
if (tty_mess.m_source == LOG_PROC_NR)
continue;
/* Can all of these occur? Probably not. We're by far most
* likely to see DEV_OPEN, but better safe than sorry..
*/
switch (tty_mess.m_type) {
case DEV_OPEN: code = DEV_OPEN_REPL; break;
case DEV_CLOSE: code = DEV_CLOSE_REPL; break;
default: code = DEV_REVIVE; break;
}
tty_reply(code, tty_mess.m_source, tty_mess.USER_ENDPT,
(cp_grant_id_t) tty_mess.IO_GRANT, ENXIO);
do_pty(&tty_mess, ipc_status);
continue;
}
/* Execute the requested device driver function. */
switch (tty_mess.m_type) {
case DEV_READ_S: do_read(tp, &tty_mess); break;
case DEV_WRITE_S: do_write(tp, &tty_mess); break;
case DEV_IOCTL_S: do_ioctl(tp, &tty_mess); break;
case DEV_OPEN: do_open(tp, &tty_mess); break;
case DEV_CLOSE: do_close(tp, &tty_mess); break;
case DEV_SELECT: do_select(tp, &tty_mess); break;
case CANCEL: do_cancel(tp, &tty_mess); break;
default:
printf("Warning, TTY got unexpected request %d from %d\n",
tty_mess.m_type, tty_mess.m_source);
tty_reply(DEV_REVIVE, tty_mess.m_source, tty_mess.USER_ENDPT,
(cp_grant_id_t) tty_mess.IO_GRANT, EINVAL);
}
chardriver_process(&tty_tab, &tty_mess, ipc_status);
}
return 0;
@ -305,47 +271,41 @@ int main(void)
static void
set_color(tty_t *tp, int color)
{
message msg;
char buf[8];
buf[0] = '\033';
snprintf(&buf[1], sizeof(buf) - 1, "[1;%dm", color);
memset(&msg, 0, sizeof(msg));
msg.m_source = KERNEL;
msg.IO_GRANT = buf;
msg.COUNT = sizeof(buf);
do_write(tp, &msg);
do_write(tp->tty_minor, 0, KERNEL, (cp_grant_id_t) buf, sizeof(buf),
FLG_OP_NONBLOCK, 0);
}
static void
reset_color(tty_t *tp)
{
message msg;
char buf[8];
#define SGR_COLOR_RESET 39
buf[0] = '\033';
snprintf(&buf[1], sizeof(buf) - 1, "[0;%dm", SGR_COLOR_RESET);
memset(&msg, 0, sizeof(msg));
msg.m_source = KERNEL;
msg.IO_GRANT = buf;
msg.COUNT = sizeof(buf);
do_write(tp, &msg);
do_write(tp->tty_minor, 0, KERNEL, (cp_grant_id_t) buf, sizeof(buf),
FLG_OP_NONBLOCK, 0);
}
static tty_t *
line2tty(int line)
tty_t *
line2tty(devminor_t line)
{
/* Convert a terminal line to tty_table pointer */
tty_t* tp;
/* /dev/log goes to /dev/console, and both may be redirected. */
if (line == CONS_MINOR || line == LOG_MINOR)
line = consoleline;
if (line == KBD_MINOR || line == KBDAUX_MINOR || line == VIDEO_MINOR) {
return(NULL);
} else if ((line - CONS_MINOR) < NR_CONS) {
tp = tty_addr(line - CONS_MINOR);
} else if (line == LOG_MINOR) {
tp = tty_addr(consoleline);
} else if ((line - RS232_MINOR) < NR_RS_LINES) {
tp = tty_addr(line - RS232_MINOR + NR_CONS);
} else if ((line - TTYPX_MINOR) < NR_PTYS) {
@ -356,6 +316,9 @@ line2tty(int line)
tp = NULL;
}
if (tp != NULL && !tty_active(tp))
tp = NULL;
return(tp);
}
@ -430,7 +393,7 @@ set_console_line(char term[CONS_ARG])
}
/* Serial lines */
assert(NR_RS_LINES <= 9);/* bellow assumes this is the case */
assert(NR_RS_LINES <= 9);/* below assumes this is the case */
for (i = 0; i < NR_RS_LINES; i++) {
char sercons[6];
strlcpy(sercons, "tty00", sizeof(sercons));
@ -465,7 +428,6 @@ do_new_kmess(void)
static int prev_next = 0;
int next, bytes, copy, restore = 0;
tty_t *tp, rtp;
message print_kmsg;
assert(_minix_kerninfo);
kmess_ptr = _minix_kerninfo->kmessages;
@ -491,7 +453,7 @@ do_new_kmess(void)
}
tp = line2tty(consoleline);
if (tp == NULL || !tty_active(tp))
if (tp == NULL)
panic("Don't know where to send kernel messages");
if (tp->tty_outleft > 0) {
/* Terminal is already printing */
@ -502,11 +464,9 @@ do_new_kmess(void)
if (kernel_msg_color != 0)
set_color(tp, kernel_msg_color);
memset(&print_kmsg, 0, sizeof(print_kmsg));
print_kmsg.m_source = KERNEL;
print_kmsg.IO_GRANT = kernel_buf_copy;
print_kmsg.COUNT = bytes;
do_write(tp, &print_kmsg);
do_write(tp->tty_minor, 0, KERNEL,
(cp_grant_id_t) kernel_buf_copy, bytes,
FLG_OP_NONBLOCK, 0);
if (kernel_msg_color != 0)
reset_color(tp);
if (restore) {
@ -541,141 +501,138 @@ static void sef_cb_signal_handler(int signo)
/*===========================================================================*
* do_read *
*===========================================================================*/
static void do_read(tp, m_ptr)
register tty_t *tp; /* pointer to tty struct */
register message *m_ptr; /* pointer to message sent to the task */
static ssize_t do_read(devminor_t minor, u64_t UNUSED(position),
endpoint_t endpt, cp_grant_id_t grant, size_t size, int flags,
cdev_id_t id)
{
/* A process wants to read from a terminal. */
tty_t *tp;
int r;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
/* Check if there is already a process hanging in a read, check if the
* parameters are correct, do I/O.
*/
if (tp->tty_inleft > 0) {
r = EIO;
} else
if (m_ptr->COUNT <= 0) {
r = EINVAL;
} else if (tp->tty_ingrant != GRANT_INVALID) {
/* This is actually a fundamental problem with TTY; it can handle
* only one reader per minor device. If we don't return an error,
* we'll overwrite the previous reader and that process will get
* stuck forever. */
r = ENOBUFS;
} else {
/* Copy information from the message to the tty struct. */
tp->tty_incaller = m_ptr->m_source;
tp->tty_inproc = m_ptr->USER_ENDPT;
tp->tty_ingrant = (cp_grant_id_t) m_ptr->IO_GRANT;
tp->tty_inoffset = 0;
tp->tty_inleft = m_ptr->COUNT;
if (tp->tty_incaller != NONE || tp->tty_inleft > 0)
return EIO;
if (size <= 0)
return EINVAL;
if (!(tp->tty_termios.c_lflag & ICANON)
&& tp->tty_termios.c_cc[VTIME] > 0) {
if (tp->tty_termios.c_cc[VMIN] == 0) {
/* MIN & TIME specify a read timer that finishes the
* read in TIME/10 seconds if no bytes are available.
*/
settimer(tp, TRUE);
tp->tty_min = 1;
} else {
/* MIN & TIME specify an inter-byte timer that may
* have to be cancelled if there are no bytes yet.
*/
if (tp->tty_eotct == 0) {
settimer(tp, FALSE);
tp->tty_min = tp->tty_termios.c_cc[VMIN];
}
/* Copy information from the message to the tty struct. */
tp->tty_incaller = endpt;
tp->tty_inid = id;
tp->tty_ingrant = grant;
assert(tp->tty_incum == 0);
tp->tty_inleft = size;
if (!(tp->tty_termios.c_lflag & ICANON) && tp->tty_termios.c_cc[VTIME] > 0) {
if (tp->tty_termios.c_cc[VMIN] == 0) {
/* MIN & TIME specify a read timer that finishes the
* read in TIME/10 seconds if no bytes are available.
*/
settimer(tp, TRUE);
tp->tty_min = 1;
} else {
/* MIN & TIME specify an inter-byte timer that may
* have to be cancelled if there are no bytes yet.
*/
if (tp->tty_eotct == 0) {
settimer(tp, FALSE);
tp->tty_min = tp->tty_termios.c_cc[VMIN];
}
}
/* Anything waiting in the input buffer? Clear it out... */
in_transfer(tp);
/* ...then go back for more. */
handle_events(tp);
if (tp->tty_inleft == 0) {
return; /* already done */
}
/* There were no bytes in the input queue available. */
if (m_ptr->FLAGS & FLG_OP_NONBLOCK) {
tty_icancel(tp);
r = tp->tty_incum > 0 ? tp->tty_incum : EAGAIN;
tp->tty_inleft = tp->tty_incum = 0;
tp->tty_ingrant = GRANT_INVALID;
} else {
return; /* suspend the caller */
}
}
tty_reply(DEV_REVIVE, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, r);
/* Anything waiting in the input buffer? Clear it out... */
in_transfer(tp);
/* ...then go back for more. */
handle_events(tp);
if (tp->tty_inleft == 0)
return EDONTREPLY; /* already done */
/* There were no bytes in the input queue available. */
if (flags & FLG_OP_NONBLOCK) {
tty_icancel(tp);
r = tp->tty_incum > 0 ? tp->tty_incum : EAGAIN;
tp->tty_inleft = tp->tty_incum = 0;
tp->tty_incaller = NONE;
return r;
}
if (tp->tty_select_ops)
select_retry(tp);
select_retry(tp);
return EDONTREPLY; /* suspend the caller */
}
/*===========================================================================*
* do_write *
*===========================================================================*/
static void do_write(tp, m_ptr)
register tty_t *tp;
register message *m_ptr; /* pointer to message sent to the task */
static ssize_t do_write(devminor_t minor, u64_t UNUSED(position),
endpoint_t endpt, cp_grant_id_t grant, size_t size, int flags,
cdev_id_t id)
{
/* A process wants to write on a terminal. */
tty_t *tp;
int r;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
/* Check if there is already a process hanging in a write, check if the
* parameters are correct, do I/O.
*/
if (tp->tty_outleft > 0) {
r = EIO;
} else
if (m_ptr->COUNT <= 0) {
r = EINVAL;
} else {
/* Copy message parameters to the tty structure. */
tp->tty_outcaller = m_ptr->m_source;
tp->tty_outproc = m_ptr->USER_ENDPT;
tp->tty_outgrant = (cp_grant_id_t) m_ptr->IO_GRANT;
tp->tty_outoffset = 0;
tp->tty_outleft = m_ptr->COUNT;
if (tp->tty_outcaller != NONE || tp->tty_outleft > 0)
return EIO;
if (size <= 0)
return EINVAL;
/* Try to write. */
handle_events(tp);
if (tp->tty_outleft == 0)
return; /* already done */
/* Copy message parameters to the tty structure. */
tp->tty_outcaller = endpt;
tp->tty_outid = id;
tp->tty_outgrant = grant;
assert(tp->tty_outcum == 0);
tp->tty_outleft = size;
/* None or not all the bytes could be written. */
if (m_ptr->FLAGS & FLG_OP_NONBLOCK) {
r = tp->tty_outcum > 0 ? tp->tty_outcum : EAGAIN;
tp->tty_outleft = tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
} else {
return; /* suspend the caller */
}
/* Try to write. */
handle_events(tp);
if (tp->tty_outleft == 0)
return EDONTREPLY; /* already done */
/* None or not all the bytes could be written. */
if (flags & FLG_OP_NONBLOCK) {
r = tp->tty_outcum > 0 ? tp->tty_outcum : EAGAIN;
tp->tty_outleft = tp->tty_outcum = 0;
tp->tty_outcaller = NONE;
return r;
}
tty_reply(DEV_REVIVE, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, r);
if (tp->tty_select_ops)
select_retry(tp);
return EDONTREPLY; /* suspend the caller */
}
/*===========================================================================*
* do_ioctl *
*===========================================================================*/
static void do_ioctl(tp, m_ptr)
register tty_t *tp;
message *m_ptr; /* pointer to message sent to task */
static int do_ioctl(devminor_t minor, unsigned long request, endpoint_t endpt,
cp_grant_id_t grant, int flags, endpoint_t user_endpt, cdev_id_t id)
{
/* Perform an IOCTL on this terminal. Posix termios calls are handled
* by the IOCTL system call
/* Perform an IOCTL on this terminal. POSIX termios calls are handled
* by the IOCTL system call.
*/
int r;
union {
int i;
} param;
tty_t *tp;
int i, r;
size_t size;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
/* Size of the ioctl parameter. */
switch (m_ptr->REQUEST) {
switch (request) {
case TCGETS: /* Posix tcgetattr function */
case TCSETS: /* Posix tcsetattr function, TCSANOW option */
case TCSETSW: /* Posix tcsetattr function, TCSADRAIN option */
@ -709,60 +666,55 @@ message *m_ptr; /* pointer to message sent to task */
}
r = OK;
switch (m_ptr->REQUEST) {
switch (request) {
case TCGETS:
/* Get the termios attributes. */
r = sys_safecopyto(m_ptr->m_source, (cp_grant_id_t) m_ptr->IO_GRANT, 0,
(vir_bytes) &tp->tty_termios, (vir_bytes) size);
r = sys_safecopyto(endpt, grant, 0, (vir_bytes) &tp->tty_termios,
size);
break;
case TCSETSW:
case TCSETSF:
case TCDRAIN:
if (tp->tty_outleft > 0) {
if (m_ptr->FLAGS & FLG_OP_NONBLOCK) {
r = EAGAIN;
} else {
/* Wait for all ongoing output processing to finish. */
tp->tty_iocaller = m_ptr->m_source;
tp->tty_ioproc = m_ptr->USER_ENDPT;
tp->tty_ioreq = m_ptr->REQUEST;
tp->tty_iogrant = (cp_grant_id_t) m_ptr->IO_GRANT;
return;
}
break;
if (flags & FLG_OP_NONBLOCK)
return EAGAIN;
/* Wait for all ongoing output processing to finish. */
tp->tty_iocaller = endpt;
tp->tty_ioid = id;
tp->tty_ioreq = request;
tp->tty_iogrant = grant;
return EDONTREPLY; /* suspend the caller */
}
if (m_ptr->REQUEST == TCDRAIN) break;
if (m_ptr->REQUEST == TCSETSF) tty_icancel(tp);
if (request == TCDRAIN) break;
if (request == TCSETSF) tty_icancel(tp);
/*FALL THROUGH*/
case TCSETS:
/* Set the termios attributes. */
r = sys_safecopyfrom(m_ptr->m_source, (cp_grant_id_t) m_ptr->IO_GRANT,
0, (vir_bytes) &tp->tty_termios, (vir_bytes) size);
r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) &tp->tty_termios,
size);
if (r != OK) break;
setattr(tp);
break;
case TCFLSH:
r = sys_safecopyfrom(m_ptr->m_source, (cp_grant_id_t) m_ptr->IO_GRANT,
0, (vir_bytes) &param.i, (vir_bytes) size);
r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) &i, size);
if (r != OK) break;
switch (param.i) {
case TCIFLUSH: tty_icancel(tp); break;
case TCOFLUSH: (*tp->tty_ocancel)(tp, 0); break;
case TCIOFLUSH: tty_icancel(tp); (*tp->tty_ocancel)(tp, 0); break;
default: r = EINVAL;
switch (i) {
case TCIFLUSH: tty_icancel(tp); break;
case TCOFLUSH: (*tp->tty_ocancel)(tp, 0); break;
case TCIOFLUSH: tty_icancel(tp); (*tp->tty_ocancel)(tp, 0); break;
default: r = EINVAL;
}
break;
case TCFLOW:
r = sys_safecopyfrom(m_ptr->m_source, (cp_grant_id_t) m_ptr->IO_GRANT,
0, (vir_bytes) &param.i, (vir_bytes) size);
r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) &i, size);
if (r != OK) break;
switch (param.i) {
switch (i) {
case TCOOFF:
case TCOON:
tp->tty_inhibited = (param.i == TCOOFF);
tp->tty_inhibited = (i == TCOOFF);
tp->tty_events = 1;
break;
case TCIOFF:
@ -781,27 +733,24 @@ message *m_ptr; /* pointer to message sent to task */
break;
case TIOCGWINSZ:
r = sys_safecopyto(m_ptr->m_source, (cp_grant_id_t) m_ptr->IO_GRANT, 0,
(vir_bytes) &tp->tty_winsize, (vir_bytes) size);
r = sys_safecopyto(endpt, grant, 0, (vir_bytes) &tp->tty_winsize,
size);
break;
case TIOCSWINSZ:
r = sys_safecopyfrom(m_ptr->m_source, (cp_grant_id_t) m_ptr->IO_GRANT,
0, (vir_bytes) &tp->tty_winsize, (vir_bytes) size);
r = sys_safecopyfrom(endpt, grant, 0, (vir_bytes) &tp->tty_winsize,
size);
sigchar(tp, SIGWINCH, 0);
break;
case KIOCSMAP:
/* Load a new keymap (only /dev/console). */
if (isconsole(tp)) r = kbd_loadmap(m_ptr);
if (isconsole(tp)) r = kbd_loadmap(endpt, grant);
break;
case TIOCSFON_OLD:
printf("TTY: old TIOCSFON ignored.\n");
break;
case TIOCSFON:
/* Load a font into an EGA or VGA card (hs@hck.hr) */
if (isconsole(tp)) r = con_loadfont(m_ptr);
if (isconsole(tp)) r = con_loadfont(endpt, grant);
break;
/* These Posix functions are allowed to fail if _POSIX_JOB_CONTROL is
@ -813,30 +762,30 @@ message *m_ptr; /* pointer to message sent to task */
r = ENOTTY;
}
/* Send the reply. */
tty_reply(DEV_REVIVE, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, r);
return r;
}
/*===========================================================================*
* do_open *
*===========================================================================*/
static void do_open(tp, m_ptr)
register tty_t *tp;
message *m_ptr; /* pointer to message sent to task */
static int do_open(devminor_t minor, int access, endpoint_t user_endpt)
{
/* A tty line has been opened. Make it the callers controlling tty if
* O_NOCTTY is *not* set and it is not the log device. 1 is returned if
* the tty is made the controlling tty, otherwise OK or an error code.
*/
tty_t *tp;
int r = OK;
if (m_ptr->DEVICE == LOG_MINOR) {
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
if (minor == LOG_MINOR) {
/* The log device is a write-only diagnostics device. */
if (m_ptr->COUNT & R_BIT) r = EACCES;
if (access & R_BIT) return EACCES;
} else {
if (!(m_ptr->COUNT & O_NOCTTY)) {
tp->tty_pgrp = m_ptr->USER_ENDPT;
if (!(access & O_NOCTTY)) {
tp->tty_pgrp = user_endpt;
r = 1;
}
tp->tty_openct++;
@ -845,20 +794,22 @@ message *m_ptr; /* pointer to message sent to task */
(*tp->tty_open)(tp, 0);
}
}
tty_reply(DEV_OPEN_REPL, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, r);
return r;
}
/*===========================================================================*
* do_close *
*===========================================================================*/
static void do_close(tp, m_ptr)
register tty_t *tp;
message *m_ptr; /* pointer to message sent to task */
static int do_close(devminor_t minor)
{
/* A tty line has been closed. Clean up the line if it is the last close. */
tty_t *tp;
if (m_ptr->DEVICE != LOG_MINOR && --tp->tty_openct == 0) {
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
if (minor != LOG_MINOR && --tp->tty_openct == 0) {
tp->tty_pgrp = 0;
tty_icancel(tp);
(*tp->tty_ocancel)(tp, 0);
@ -867,53 +818,49 @@ message *m_ptr; /* pointer to message sent to task */
tp->tty_winsize = winsize_defaults;
setattr(tp);
}
tty_reply(DEV_CLOSE_REPL, m_ptr->m_source, m_ptr->USER_ENDPT,
(cp_grant_id_t) m_ptr->IO_GRANT, OK);
return OK;
}
/*===========================================================================*
* do_cancel *
*===========================================================================*/
static void do_cancel(tp, m_ptr)
register tty_t *tp;
message *m_ptr; /* pointer to message sent to task */
static int do_cancel(devminor_t minor, endpoint_t endpt, cdev_id_t id)
{
/* A signal has been sent to a process that is hanging trying to read or write.
* The pending read or write must be finished off immediately.
*/
endpoint_t proc_nr;
cp_grant_id_t grant;
int mode;
int r = EDONTREPLY;
tty_t *tp;
int r;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
/* Check the parameters carefully, to avoid cancelling twice. */
proc_nr = m_ptr->USER_ENDPT;
grant = (cp_grant_id_t) m_ptr->IO_GRANT;
mode = m_ptr->COUNT;
if ((mode & R_BIT) && tp->tty_inleft != 0 && proc_nr == tp->tty_inproc &&
tp->tty_ingrant == grant) {
r = EDONTREPLY;
if (tp->tty_inleft != 0 && endpt == tp->tty_incaller && id == tp->tty_inid) {
/* Process was reading when killed. Clean up input. */
tty_icancel(tp);
r = tp->tty_incum > 0 ? tp->tty_incum : EAGAIN;
tp->tty_inleft = tp->tty_incum = 0;
tp->tty_ingrant = GRANT_INVALID;
}
if ((mode & W_BIT) && tp->tty_outleft != 0 && proc_nr == tp->tty_outproc &&
tp->tty_outgrant == grant) {
tp->tty_incaller = NONE;
} else if (tp->tty_outleft != 0 && endpt == tp->tty_outcaller &&
id == tp->tty_outid) {
/* Process was writing when killed. Clean up output. */
r = tp->tty_outcum > 0 ? tp->tty_outcum : EAGAIN;
tp->tty_outleft = tp->tty_outcum = 0;
tp->tty_outgrant = GRANT_INVALID;
}
if (tp->tty_ioreq != 0 && proc_nr == tp->tty_ioproc) {
tp->tty_outcaller = NONE;
} else if (tp->tty_ioreq != 0 && endpt == tp->tty_iocaller &&
id == tp->tty_ioid) {
/* Process was waiting for output to drain. */
tp->tty_ioreq = 0;
r = EINTR;
tp->tty_ioreq = 0;
tp->tty_iocaller = NONE;
}
tp->tty_events = 1;
/* Only reply if we found a matching request. */
if (r != EDONTREPLY)
tty_reply(DEV_REVIVE, m_ptr->m_source, proc_nr, grant, r);
tp->tty_events = 1;
/* Only reply if we found a matching request. */
return r;
}
int select_try(struct tty *tp, int ops)
@ -955,14 +902,43 @@ int select_retry(struct tty *tp)
int ops;
if (tp->tty_select_ops && (ops = select_try(tp, tp->tty_select_ops))) {
assert(tp->tty_select_minor == tp->tty_minor);
select_reply(DEV_SEL_REPL2, tp->tty_select_proc, tp->tty_minor,
chardriver_reply_select(tp->tty_select_proc, tp->tty_minor,
ops);
tp->tty_select_ops &= ~ops;
}
return OK;
}
/*===========================================================================*
* do_select *
*===========================================================================*/
static int do_select(devminor_t minor, unsigned int ops, endpoint_t endpt)
{
tty_t *tp;
int ready_ops, watch;
if ((tp = line2tty(minor)) == NULL)
return ENXIO;
/* Translated minor numbers are a problem when sending late replies. */
if (tp->tty_minor != minor)
return EBADF;
watch = (ops & SEL_NOTIFY);
ops &= (SEL_RD | SEL_WR | SEL_ERR);
ready_ops = select_try(tp, ops);
ops &= ~ready_ops;
if (ops && watch) {
tp->tty_select_ops |= ops;
tp->tty_select_proc = endpt;
}
assert(tp->tty_minor == minor);
return ready_ops;
}
/*===========================================================================*
* handle_events *
*===========================================================================*/
@ -979,8 +955,8 @@ tty_t *tp; /* TTY to check for events. */
* to avoid swamping the TTY task. Messages may be overwritten when the
* lines are fast or when there are races between different lines, input
* and output, because MINIX only provides single buffering for interrupt
* messages (in proc.c). This is handled by explicitly checking each line
* for fresh input and completed output on each interrupt.
* messages. This is handled by explicitly checking each line for fresh input
* and completed output on each interrupt.
*/
do {
@ -1001,10 +977,9 @@ tty_t *tp; /* TTY to check for events. */
/* Reply if enough bytes are available. */
if (tp->tty_incum >= tp->tty_min && tp->tty_inleft > 0) {
tty_reply(DEV_REVIVE, tp->tty_incaller, tp->tty_inproc,
tp->tty_ingrant, tp->tty_incum);
chardriver_reply_task(tp->tty_incaller, tp->tty_inid, tp->tty_incum);
tp->tty_inleft = tp->tty_incum = 0;
tp->tty_ingrant = GRANT_INVALID;
tp->tty_incaller = NONE;
}
if (tp->tty_select_ops)
{
@ -1045,10 +1020,8 @@ register tty_t *tp; /* pointer to terminal to read from */
if (++bp == bufend(buf)) {
/* Temp buffer full, copy to user space. */
sys_safecopyto(tp->tty_incaller,
tp->tty_ingrant, tp->tty_inoffset,
(vir_bytes) buf,
(vir_bytes) buflen(buf));
tp->tty_inoffset += buflen(buf);
tp->tty_ingrant, tp->tty_incum,
(vir_bytes) buf, (vir_bytes) buflen(buf));
tp->tty_incum += buflen(buf);
bp = buf;
}
@ -1068,19 +1041,16 @@ register tty_t *tp; /* pointer to terminal to read from */
if (bp > buf) {
/* Leftover characters in the buffer. */
count = bp - buf;
sys_safecopyto(tp->tty_incaller,
tp->tty_ingrant, tp->tty_inoffset,
sys_safecopyto(tp->tty_incaller, tp->tty_ingrant, tp->tty_incum,
(vir_bytes) buf, (vir_bytes) count);
tp->tty_inoffset += count;
tp->tty_incum += count;
}
/* Usually reply to the reader, possibly even if incum == 0 (EOF). */
if (tp->tty_inleft == 0) {
tty_reply(DEV_REVIVE, tp->tty_incaller, tp->tty_inproc,
tp->tty_ingrant, tp->tty_incum);
chardriver_reply_task(tp->tty_incaller, tp->tty_inid, tp->tty_incum);
tp->tty_inleft = tp->tty_incum = 0;
tp->tty_ingrant = GRANT_INVALID;
tp->tty_incaller = NONE;
}
}
@ -1510,9 +1480,8 @@ tty_t *tp;
if (result == OK) setattr(tp);
}
tp->tty_ioreq = 0;
tty_reply(DEV_REVIVE, tp->tty_iocaller, tp->tty_ioproc, tp->tty_iogrant,
result);
tp->tty_iogrant = GRANT_INVALID;
chardriver_reply_task(tp->tty_iocaller, tp->tty_ioid, result);
tp->tty_iocaller = NONE;
}
/*===========================================================================*
@ -1571,57 +1540,6 @@ tty_t *tp;
(*tp->tty_ioctl)(tp, 0);
}
/*===========================================================================*
* tty_reply *
*===========================================================================*/
void
tty_reply_f(
file, line, code, replyee, proc_nr, grant, status)
char *file;
int line;
int code; /* DEV_OPEN_REPL, DEV_CLOSE_REPL, DEV_REVIVE */
endpoint_t replyee; /* destination address for the reply */
endpoint_t proc_nr; /* to whom should the reply go? */
cp_grant_id_t grant; /* which grant was involved? */
int status; /* reply code */
{
message m;
assert(code == DEV_OPEN_REPL || code == DEV_CLOSE_REPL || code == DEV_REVIVE);
/* Don't reply to KERNEL (kernel messages) */
if (replyee == KERNEL) return;
memset(&m, 0, sizeof(m));
m.REP_ENDPT = proc_nr;
m.REP_IO_GRANT = grant;
m.REP_STATUS = status;
status = _sendcall(replyee, code, &m);
if (status != OK)
printf("tty`tty_reply: send to %d failed: %d\n", replyee, status);
}
/*===========================================================================*
* select_reply *
*===========================================================================*/
void select_reply(int code, endpoint_t replyee, dev_t minor, int ops)
{
message m;
int status;
memset(&m, 0, sizeof(m));
m.DEV_MINOR = minor;
m.DEV_SEL_OPS = ops;
status = _sendcall(replyee, code, &m);
if (status != OK)
printf("tty`select_reply: send to %d failed: %d\n", replyee, status);
}
/*===========================================================================*
* sigchar *
*===========================================================================*/
@ -1696,7 +1614,7 @@ static void tty_init()
tp->tty_intail = tp->tty_inhead = tp->tty_inbuf;
tp->tty_min = 1;
tp->tty_ingrant = tp->tty_outgrant = tp->tty_iogrant = GRANT_INVALID;
tp->tty_incaller = tp->tty_outcaller = tp->tty_iocaller = NONE;
tp->tty_termios = termios_defaults;
tp->tty_icancel = tp->tty_ocancel = tp->tty_ioctl = tp->tty_close =
tp->tty_open = tty_devnop;
@ -1750,27 +1668,3 @@ int enable; /* set timer if true, otherwise unset */
cancel_timer(&tty_ptr->tty_tmr);
}
}
/*===========================================================================*
* do_select *
*===========================================================================*/
static void do_select(tp, m_ptr)
register tty_t *tp; /* pointer to tty struct */
register message *m_ptr; /* pointer to message sent to the task */
{
int ops, ready_ops = 0, watch;
ops = m_ptr->DEV_SEL_OPS & (SEL_RD|SEL_WR|SEL_ERR);
watch = (m_ptr->DEV_SEL_OPS & SEL_NOTIFY) ? 1 : 0;
ready_ops = select_try(tp, ops);
if (!ready_ops && ops && watch) {
tp->tty_select_ops |= ops;
tp->tty_select_proc = m_ptr->m_source;
tp->tty_select_minor = m_ptr->DEV_MINOR;
}
assert(tp->tty_minor == m_ptr->DEV_MINOR);
select_reply(DEV_SEL_REPL1, m_ptr->m_source, tp->tty_minor, ready_ops);
}

44
drivers/tty/tty.h
View file

@ -1,5 +1,6 @@
/* tty.h - Terminals */
#include <minix/chardriver.h>
#include <timers.h>
#undef lock
@ -34,7 +35,7 @@ typedef void(*devfunarg_t) (struct tty *tp, int c);
typedef struct tty {
int tty_events; /* set when TTY should inspect this line */
int tty_index; /* index into TTY table */
int tty_minor; /* device minor number */
devminor_t tty_minor; /* device minor number */
/* Input queue. Typed characters are stored here until read by a program. */
u16_t *tty_inhead; /* pointer to place where next char goes */
@ -61,27 +62,24 @@ typedef struct tty {
char tty_openct; /* count of number of opens of this tty */
/* Information about incomplete I/O requests is stored here. */
endpoint_t tty_incaller; /* process that made the call (usually VFS) */
endpoint_t tty_inproc; /* process that wants to read from tty */
endpoint_t tty_incaller; /* process that made the call, or NONE */
cdev_id_t tty_inid; /* ID of suspended read request */
cp_grant_id_t tty_ingrant; /* grant where data is to go */
vir_bytes tty_inoffset; /* offset into grant */
int tty_inleft; /* how many chars are still needed */
int tty_incum; /* # chars input so far */
endpoint_t tty_outcaller; /* process that made the call (usually VFS) */
endpoint_t tty_outproc; /* process that wants to write to tty */
size_t tty_inleft; /* how many chars are still needed */
size_t tty_incum; /* # chars input so far */
endpoint_t tty_outcaller; /* process that made the call, or NONE */
cdev_id_t tty_outid; /* ID of suspended write request */
cp_grant_id_t tty_outgrant; /* grant where data comes from */
vir_bytes tty_outoffset; /* offset into grant */
int tty_outleft; /* # chars yet to be output */
int tty_outcum; /* # chars output so far */
endpoint_t tty_iocaller; /* process that made the call (usually VFS) */
endpoint_t tty_ioproc; /* process that wants to do an ioctl */
int tty_ioreq; /* ioctl request code */
size_t tty_outleft; /* # chars yet to be output */
size_t tty_outcum; /* # chars output so far */
endpoint_t tty_iocaller; /* process that made the call, or NONE */
cdev_id_t tty_ioid; /* ID of suspended ioctl request */
unsigned int tty_ioreq; /* ioctl request code */
cp_grant_id_t tty_iogrant; /* virtual address of ioctl buffer or grant */
/* select() data */
int tty_select_ops; /* which operations are interesting */
endpoint_t tty_select_proc; /* which process wants notification */
dev_t tty_select_minor; /* sanity check only, can be removed */
/* Miscellaneous. */
devfun_t tty_ioctl; /* set line speed, etc. at the device level */
@ -135,14 +133,11 @@ extern struct kmessages kmess;
void handle_events(struct tty *tp);
void sigchar(struct tty *tp, int sig, int mayflush);
void tty_task(void);
tty_t *line2tty(devminor_t minor);
int in_process(struct tty *tp, char *buf, int count, int scode);
void out_process(struct tty *tp, char *bstart, char *bpos, char *bend,
int *icount, int *ocount);
void tty_wakeup(clock_t now);
#define tty_reply(c, r, p, g, s) tty_reply_f(__FILE__, __LINE__, (c), (r), (p), (g), (s))
void tty_reply_f(char *f, int l, int code, endpoint_t replyee,
endpoint_t proc_nr, cp_grant_id_t grant, int status);
void select_reply(int code, endpoint_t replyee, dev_t minor, int ops);
int select_try(struct tty *tp, int ops);
int select_retry(struct tty *tp);
@ -155,22 +150,21 @@ void kputc(int c);
void cons_stop(void);
void scr_init(struct tty *tp);
void toggle_scroll(void);
int con_loadfont(message *m);
int con_loadfont(endpoint_t endpt, cp_grant_id_t grant);
void select_console(int cons_line);
void beep_x( unsigned freq, clock_t dur);
void do_video(message *m);
void do_video(message *m, int ipc_status);
/* keyboard.c */
void kb_init(struct tty *tp);
void kb_init_once(void);
int kbd_loadmap(message *m);
int kbd_loadmap(endpoint_t endpt, cp_grant_id_t grant);
void do_fkey_ctl(message *m);
void kbd_interrupt(message *m);
void do_kbd(message *m);
void do_kbd(message *m, int ipc_status);
void do_kb_inject(message *m);
void do_kbdaux(message *m);
/* pty.c */
void do_pty(struct tty *tp, message *m_ptr);
void do_pty(message *m_ptr, int ipc_status);
void pty_init(struct tty *tp);
void select_retry_pty(struct tty *tp);

2
include/minix/Makefile
View file

@ -18,7 +18,7 @@ INCS+= acpi.h audio_fw.h bitmap.h \
reboot.h rs.h safecopies.h sched.h sef.h sffs.h \
sound.h spin.h sys_config.h sysinfo.h \
syslib.h sysutil.h termios.h timers.h type.h \
tty.h u64.h usb.h usb_ch9.h vbox.h \
u64.h usb.h usb_ch9.h vbox.h \
vboxfs.h vboxif.h vboxtype.h vm.h \
vfsif.h vtreefs.h libminixfs.h netsock.h \
virtio.h

1
include/minix/com.h
View file

@ -1275,7 +1275,6 @@
#define TTY_FKEY_CONTROL (TTY_RQ_BASE + 1) /* control an F-key at TTY */
#define OLD_FKEY_CONTROL 98 /* previously used for TTY_FKEY_CONTROL */
# define FKEY_REQUEST m2_i1 /* request to perform at TTY */
# define FKEY_MAP 10 /* observe function key */
# define FKEY_UNMAP 11 /* stop observing function key */

28
include/minix/tty.h
View file

@ -1,28 +0,0 @@
#ifndef _MINIX_TTY_H
#define _MINIX_TTY_H
#include <sys/types.h>
#define TTYMAGIC 0xb105
/* A struct that the tty driver can use to pass values to the boot monitor.
* Currently only the value of the origin of the first vty (console), so the
* boot monitor can properly display it when panicing (tty isn't scheduled
* to switch to the first vty). It's written at the end of video memory
* (video memory base + video memory size - sizeof(struct boot_tty_info).
*/
struct boot_tty_info {
u16_t reserved[30]; /* reserved, set to 0 */
u16_t consorigin; /* origin in video memory of console */
u16_t conscursor; /* position of cursor of console */
u16_t flags; /* flags indicating which fields are valid */
u16_t magic; /* magic number indicating struct is valid */
};
#define BTIF_CONSORIGIN 0x01 /* consorigin is set */
#define BTIF_CONSCURSOR 0x02 /* conscursor is set */
#endif

1
include/sys/ioc_tty.h
View file

@ -22,7 +22,6 @@
#define TIOCSWINSZ _IOW('T', 17, struct winsize)
#define TIOCGPGRP _IOW('T', 18, int)
#define TIOCSPGRP _IOW('T', 19, int)
#define TIOCSFON_OLD _IOW('T', 20, u8_t [8192])
#define TIOCSFON _IOW_BIG(1, u8_t [8192])
/* Keyboard ioctls. */