提交 355d95a1 编写于 作者: A Alan Cox 提交者: Linus Torvalds

tty_ioctl: drag screaming into compliance with the coding style

Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 37bdfb07
......@@ -50,11 +50,11 @@
* Locking: none
*/
void tty_wait_until_sent(struct tty_struct * tty, long timeout)
void tty_wait_until_sent(struct tty_struct *tty, long timeout)
{
#ifdef TTY_DEBUG_WAIT_UNTIL_SENT
char buf[64];
printk(KERN_DEBUG "%s wait until sent...\n", tty_name(tty, buf));
#endif
if (!tty->driver->chars_in_buffer)
......@@ -67,7 +67,6 @@ void tty_wait_until_sent(struct tty_struct * tty, long timeout)
if (tty->driver->wait_until_sent)
tty->driver->wait_until_sent(tty, timeout);
}
EXPORT_SYMBOL(tty_wait_until_sent);
static void unset_locked_termios(struct ktermios *termios,
......@@ -75,8 +74,8 @@ static void unset_locked_termios(struct ktermios *termios,
struct ktermios *locked)
{
int i;
#define NOSET_MASK(x,y,z) (x = ((x) & ~(z)) | ((y) & (z)))
#define NOSET_MASK(x, y, z) (x = ((x) & ~(z)) | ((y) & (z)))
if (!locked) {
printk(KERN_WARNING "Warning?!? termios_locked is NULL.\n");
......@@ -88,7 +87,7 @@ static void unset_locked_termios(struct ktermios *termios,
NOSET_MASK(termios->c_cflag, old->c_cflag, locked->c_cflag);
NOSET_MASK(termios->c_lflag, old->c_lflag, locked->c_lflag);
termios->c_line = locked->c_line ? old->c_line : termios->c_line;
for (i=0; i < NCCS; i++)
for (i = 0; i < NCCS; i++)
termios->c_cc[i] = locked->c_cc[i] ?
old->c_cc[i] : termios->c_cc[i];
/* FIXME: What should we do for i/ospeed */
......@@ -163,7 +162,6 @@ speed_t tty_termios_baud_rate(struct ktermios *termios)
}
return baud_table[cbaud];
}
EXPORT_SYMBOL(tty_termios_baud_rate);
/**
......@@ -203,7 +201,6 @@ speed_t tty_termios_input_baud_rate(struct ktermios *termios)
return tty_termios_baud_rate(termios);
#endif
}
EXPORT_SYMBOL(tty_termios_input_baud_rate);
/**
......@@ -338,7 +335,6 @@ speed_t tty_get_baud_rate(struct tty_struct *tty)
return baud;
}
EXPORT_SYMBOL(tty_get_baud_rate);
/**
......@@ -361,7 +357,6 @@ void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old)
new->c_ispeed = old->c_ispeed;
new->c_ospeed = old->c_ospeed;
}
EXPORT_SYMBOL(tty_termios_copy_hw);
/**
......@@ -395,16 +390,16 @@ EXPORT_SYMBOL(tty_termios_hw_change);
* Locking: termios_sem
*/
static void change_termios(struct tty_struct * tty, struct ktermios * new_termios)
static void change_termios(struct tty_struct *tty, struct ktermios *new_termios)
{
int canon_change;
struct ktermios old_termios = *tty->termios;
struct tty_ldisc *ld;
/*
* Perform the actual termios internal changes under lock.
*/
/* FIXME: we need to decide on some locking/ordering semantics
for the set_termios notification eventually */
......@@ -419,7 +414,7 @@ static void change_termios(struct tty_struct * tty, struct ktermios * new_termio
tty->canon_data = 0;
tty->erasing = 0;
}
/* This bit should be in the ldisc code */
if (canon_change && !L_ICANON(tty) && tty->read_cnt)
/* Get characters left over from canonical mode. */
......@@ -442,7 +437,7 @@ static void change_termios(struct tty_struct * tty, struct ktermios * new_termio
wake_up_interruptible(&tty->link->read_wait);
}
}
if (tty->driver->set_termios)
(*tty->driver->set_termios)(tty, &old_termios);
else
......@@ -470,7 +465,7 @@ static void change_termios(struct tty_struct * tty, struct ktermios * new_termio
* Called functions take ldisc and termios_sem locks
*/
static int set_termios(struct tty_struct * tty, void __user *arg, int opt)
static int set_termios(struct tty_struct *tty, void __user *arg, int opt)
{
struct ktermios tmp_termios;
struct tty_ldisc *ld;
......@@ -501,19 +496,19 @@ static int set_termios(struct tty_struct * tty, void __user *arg, int opt)
return -EFAULT;
#endif
/* If old style Bfoo values are used then load c_ispeed/c_ospeed with the real speed
so its unconditionally usable */
/* If old style Bfoo values are used then load c_ispeed/c_ospeed
* with the real speed so its unconditionally usable */
tmp_termios.c_ispeed = tty_termios_input_baud_rate(&tmp_termios);
tmp_termios.c_ospeed = tty_termios_baud_rate(&tmp_termios);
ld = tty_ldisc_ref(tty);
if (ld != NULL) {
if ((opt & TERMIOS_FLUSH) && ld->flush_buffer)
ld->flush_buffer(tty);
tty_ldisc_deref(ld);
}
if (opt & TERMIOS_WAIT) {
tty_wait_until_sent(tty, 0);
if (signal_pending(current))
......@@ -529,14 +524,14 @@ static int set_termios(struct tty_struct * tty, void __user *arg, int opt)
return 0;
}
static int get_termio(struct tty_struct * tty, struct termio __user * termio)
static int get_termio(struct tty_struct *tty, struct termio __user *termio)
{
if (kernel_termios_to_user_termio(termio, tty->termios))
return -EFAULT;
return 0;
}
static unsigned long inq_canon(struct tty_struct * tty)
static unsigned long inq_canon(struct tty_struct *tty)
{
int nr, head, tail;
......@@ -561,7 +556,7 @@ static unsigned long inq_canon(struct tty_struct * tty)
*
* The "sg_flags" translation is a joke..
*/
static int get_sgflags(struct tty_struct * tty)
static int get_sgflags(struct tty_struct *tty)
{
int flags = 0;
......@@ -579,7 +574,7 @@ static int get_sgflags(struct tty_struct * tty)
return flags;
}
static int get_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
static int get_sgttyb(struct tty_struct *tty, struct sgttyb __user *sgttyb)
{
struct sgttyb tmp;
......@@ -590,11 +585,11 @@ static int get_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
tmp.sg_kill = tty->termios->c_cc[VKILL];
tmp.sg_flags = get_sgflags(tty);
mutex_unlock(&tty->termios_mutex);
return copy_to_user(sgttyb, &tmp, sizeof(tmp)) ? -EFAULT : 0;
}
static void set_sgflags(struct ktermios * termios, int flags)
static void set_sgflags(struct ktermios *termios, int flags)
{
termios->c_iflag = ICRNL | IXON;
termios->c_oflag = 0;
......@@ -631,7 +626,7 @@ static void set_sgflags(struct ktermios * termios, int flags)
* Locking: termios_sem
*/
static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
static int set_sgttyb(struct tty_struct *tty, struct sgttyb __user *sgttyb)
{
int retval;
struct sgttyb tmp;
......@@ -640,7 +635,7 @@ static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
retval = tty_check_change(tty);
if (retval)
return retval;
if (copy_from_user(&tmp, sgttyb, sizeof(tmp)))
return -EFAULT;
......@@ -651,7 +646,8 @@ static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
set_sgflags(&termios, tmp.sg_flags);
/* Try and encode into Bfoo format */
#ifdef BOTHER
tty_termios_encode_baud_rate(&termios, termios.c_ispeed, termios.c_ospeed);
tty_termios_encode_baud_rate(&termios, termios.c_ispeed,
termios.c_ospeed);
#endif
mutex_unlock(&tty->termios_mutex);
change_termios(tty, &termios);
......@@ -660,7 +656,7 @@ static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
#endif
#ifdef TIOCGETC
static int get_tchars(struct tty_struct * tty, struct tchars __user * tchars)
static int get_tchars(struct tty_struct *tty, struct tchars __user *tchars)
{
struct tchars tmp;
......@@ -673,7 +669,7 @@ static int get_tchars(struct tty_struct * tty, struct tchars __user * tchars)
return copy_to_user(tchars, &tmp, sizeof(tmp)) ? -EFAULT : 0;
}
static int set_tchars(struct tty_struct * tty, struct tchars __user * tchars)
static int set_tchars(struct tty_struct *tty, struct tchars __user *tchars)
{
struct tchars tmp;
......@@ -690,20 +686,22 @@ static int set_tchars(struct tty_struct * tty, struct tchars __user * tchars)
#endif
#ifdef TIOCGLTC
static int get_ltchars(struct tty_struct * tty, struct ltchars __user * ltchars)
static int get_ltchars(struct tty_struct *tty, struct ltchars __user *ltchars)
{
struct ltchars tmp;
tmp.t_suspc = tty->termios->c_cc[VSUSP];
tmp.t_dsuspc = tty->termios->c_cc[VSUSP]; /* what is dsuspc anyway? */
/* what is dsuspc anyway? */
tmp.t_dsuspc = tty->termios->c_cc[VSUSP];
tmp.t_rprntc = tty->termios->c_cc[VREPRINT];
tmp.t_flushc = tty->termios->c_cc[VEOL2]; /* what is flushc anyway? */
/* what is flushc anyway? */
tmp.t_flushc = tty->termios->c_cc[VEOL2];
tmp.t_werasc = tty->termios->c_cc[VWERASE];
tmp.t_lnextc = tty->termios->c_cc[VLNEXT];
return copy_to_user(ltchars, &tmp, sizeof(tmp)) ? -EFAULT : 0;
}
static int set_ltchars(struct tty_struct * tty, struct ltchars __user * ltchars)
static int set_ltchars(struct tty_struct *tty, struct ltchars __user *ltchars)
{
struct ltchars tmp;
......@@ -711,9 +709,11 @@ static int set_ltchars(struct tty_struct * tty, struct ltchars __user * ltchars)
return -EFAULT;
tty->termios->c_cc[VSUSP] = tmp.t_suspc;
tty->termios->c_cc[VEOL2] = tmp.t_dsuspc; /* what is dsuspc anyway? */
/* what is dsuspc anyway? */
tty->termios->c_cc[VEOL2] = tmp.t_dsuspc;
tty->termios->c_cc[VREPRINT] = tmp.t_rprntc;
tty->termios->c_cc[VEOL2] = tmp.t_flushc; /* what is flushc anyway? */
/* what is flushc anyway? */
tty->termios->c_cc[VEOL2] = tmp.t_flushc;
tty->termios->c_cc[VWERASE] = tmp.t_werasc;
tty->termios->c_cc[VLNEXT] = tmp.t_lnextc;
return 0;
......@@ -761,10 +761,10 @@ static int send_prio_char(struct tty_struct *tty, char ch)
* consistent mode setting.
*/
int tty_mode_ioctl(struct tty_struct * tty, struct file *file,
int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct tty_struct * real_tty;
struct tty_struct *real_tty;
void __user *p = (void __user *)arg;
if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
......@@ -775,100 +775,100 @@ int tty_mode_ioctl(struct tty_struct * tty, struct file *file,
switch (cmd) {
#ifdef TIOCGETP
case TIOCGETP:
return get_sgttyb(real_tty, (struct sgttyb __user *) arg);
case TIOCSETP:
case TIOCSETN:
return set_sgttyb(real_tty, (struct sgttyb __user *) arg);
case TIOCGETP:
return get_sgttyb(real_tty, (struct sgttyb __user *) arg);
case TIOCSETP:
case TIOCSETN:
return set_sgttyb(real_tty, (struct sgttyb __user *) arg);
#endif
#ifdef TIOCGETC
case TIOCGETC:
return get_tchars(real_tty, p);
case TIOCSETC:
return set_tchars(real_tty, p);
case TIOCGETC:
return get_tchars(real_tty, p);
case TIOCSETC:
return set_tchars(real_tty, p);
#endif
#ifdef TIOCGLTC
case TIOCGLTC:
return get_ltchars(real_tty, p);
case TIOCSLTC:
return set_ltchars(real_tty, p);
case TIOCGLTC:
return get_ltchars(real_tty, p);
case TIOCSLTC:
return set_ltchars(real_tty, p);
#endif
case TCSETSF:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_OLD);
case TCSETSW:
return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_OLD);
case TCSETS:
return set_termios(real_tty, p, TERMIOS_OLD);
case TCSETSF:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_OLD);
case TCSETSW:
return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_OLD);
case TCSETS:
return set_termios(real_tty, p, TERMIOS_OLD);
#ifndef TCGETS2
case TCGETS:
if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios))
return -EFAULT;
return 0;
case TCGETS:
if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios))
return -EFAULT;
return 0;
#else
case TCGETS:
if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios))
return -EFAULT;
return 0;
case TCGETS2:
if (kernel_termios_to_user_termios((struct termios2 __user *)arg, real_tty->termios))
return -EFAULT;
return 0;
case TCSETSF2:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT);
case TCSETSW2:
return set_termios(real_tty, p, TERMIOS_WAIT);
case TCSETS2:
return set_termios(real_tty, p, 0);
case TCGETS:
if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios))
return -EFAULT;
return 0;
case TCGETS2:
if (kernel_termios_to_user_termios((struct termios2 __user *)arg, real_tty->termios))
return -EFAULT;
return 0;
case TCSETSF2:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT);
case TCSETSW2:
return set_termios(real_tty, p, TERMIOS_WAIT);
case TCSETS2:
return set_termios(real_tty, p, 0);
#endif
case TCGETA:
return get_termio(real_tty, p);
case TCSETAF:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_TERMIO);
case TCSETAW:
return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_TERMIO);
case TCSETA:
return set_termios(real_tty, p, TERMIOS_TERMIO);
case TCGETA:
return get_termio(real_tty, p);
case TCSETAF:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_TERMIO);
case TCSETAW:
return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_TERMIO);
case TCSETA:
return set_termios(real_tty, p, TERMIOS_TERMIO);
#ifndef TCGETS2
case TIOCGLCKTRMIOS:
if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios_locked))
return -EFAULT;
return 0;
case TIOCSLCKTRMIOS:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (user_termios_to_kernel_termios(real_tty->termios_locked, (struct termios __user *) arg))
return -EFAULT;
return 0;
case TIOCGLCKTRMIOS:
if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios_locked))
return -EFAULT;
return 0;
case TIOCSLCKTRMIOS:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (user_termios_to_kernel_termios(real_tty->termios_locked,
(struct termios __user *) arg))
return -EFAULT;
return 0;
#else
case TIOCGLCKTRMIOS:
if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios_locked))
return -EFAULT;
return 0;
case TIOCSLCKTRMIOS:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (user_termios_to_kernel_termios_1(real_tty->termios_locked, (struct termios __user *) arg))
return -EFAULT;
case TIOCGLCKTRMIOS:
if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios_locked))
return -EFAULT;
return 0;
case TIOCSLCKTRMIOS:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (user_termios_to_kernel_termios_1(real_tty->termios_locked,
(struct termios __user *) arg))
return -EFAULT;
return 0;
#endif
case TIOCGSOFTCAR:
return put_user(C_CLOCAL(tty) ? 1 : 0, (int __user *)arg);
case TIOCSSOFTCAR:
if (get_user(arg, (unsigned int __user *) arg))
return -EFAULT;
mutex_lock(&tty->termios_mutex);
tty->termios->c_cflag =
((tty->termios->c_cflag & ~CLOCAL) |
(arg ? CLOCAL : 0));
mutex_unlock(&tty->termios_mutex);
return 0;
default:
return -ENOIOCTLCMD;
case TIOCGSOFTCAR:
return put_user(C_CLOCAL(tty) ? 1 : 0,
(int __user *)arg);
case TIOCSSOFTCAR:
if (get_user(arg, (unsigned int __user *) arg))
return -EFAULT;
mutex_lock(&tty->termios_mutex);
tty->termios->c_cflag =
((tty->termios->c_cflag & ~CLOCAL) |
(arg ? CLOCAL : 0));
mutex_unlock(&tty->termios_mutex);
return 0;
default:
return -ENOIOCTLCMD;
}
}
EXPORT_SYMBOL_GPL(tty_mode_ioctl);
int tty_perform_flush(struct tty_struct *tty, unsigned long arg)
......@@ -899,13 +899,12 @@ int tty_perform_flush(struct tty_struct *tty, unsigned long arg)
tty_ldisc_deref(ld);
return 0;
}
EXPORT_SYMBOL_GPL(tty_perform_flush);
int n_tty_ioctl(struct tty_struct * tty, struct file * file,
int n_tty_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct tty_struct * real_tty;
struct tty_struct *real_tty;
int retval;
if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
......@@ -915,68 +914,67 @@ int n_tty_ioctl(struct tty_struct * tty, struct file * file,
real_tty = tty;
switch (cmd) {
case TCXONC:
retval = tty_check_change(tty);
if (retval)
return retval;
switch (arg) {
case TCOOFF:
if (!tty->flow_stopped) {
tty->flow_stopped = 1;
stop_tty(tty);
}
break;
case TCOON:
if (tty->flow_stopped) {
tty->flow_stopped = 0;
start_tty(tty);
}
break;
case TCIOFF:
if (STOP_CHAR(tty) != __DISABLED_CHAR)
return send_prio_char(tty, STOP_CHAR(tty));
break;
case TCION:
if (START_CHAR(tty) != __DISABLED_CHAR)
return send_prio_char(tty, START_CHAR(tty));
break;
default:
return -EINVAL;
case TCXONC:
retval = tty_check_change(tty);
if (retval)
return retval;
switch (arg) {
case TCOOFF:
if (!tty->flow_stopped) {
tty->flow_stopped = 1;
stop_tty(tty);
}
return 0;
case TCFLSH:
return tty_perform_flush(tty, arg);
case TIOCOUTQ:
return put_user(tty->driver->chars_in_buffer ?
tty->driver->chars_in_buffer(tty) : 0,
(int __user *) arg);
case TIOCINQ:
retval = tty->read_cnt;
if (L_ICANON(tty))
retval = inq_canon(tty);
return put_user(retval, (unsigned int __user *) arg);
case TIOCPKT:
{
int pktmode;
if (tty->driver->type != TTY_DRIVER_TYPE_PTY ||
tty->driver->subtype != PTY_TYPE_MASTER)
return -ENOTTY;
if (get_user(pktmode, (int __user *) arg))
return -EFAULT;
if (pktmode) {
if (!tty->packet) {
tty->packet = 1;
tty->link->ctrl_status = 0;
}
} else
tty->packet = 0;
return 0;
}
break;
case TCOON:
if (tty->flow_stopped) {
tty->flow_stopped = 0;
start_tty(tty);
}
break;
case TCIOFF:
if (STOP_CHAR(tty) != __DISABLED_CHAR)
return send_prio_char(tty, STOP_CHAR(tty));
break;
case TCION:
if (START_CHAR(tty) != __DISABLED_CHAR)
return send_prio_char(tty, START_CHAR(tty));
break;
default:
/* Try the mode commands */
return tty_mode_ioctl(tty, file, cmd, arg);
return -EINVAL;
}
return 0;
case TCFLSH:
return tty_perform_flush(tty, arg);
case TIOCOUTQ:
return put_user(tty->driver->chars_in_buffer ?
tty->driver->chars_in_buffer(tty) : 0,
(int __user *) arg);
case TIOCINQ:
retval = tty->read_cnt;
if (L_ICANON(tty))
retval = inq_canon(tty);
return put_user(retval, (unsigned int __user *) arg);
case TIOCPKT:
{
int pktmode;
if (tty->driver->type != TTY_DRIVER_TYPE_PTY ||
tty->driver->subtype != PTY_TYPE_MASTER)
return -ENOTTY;
if (get_user(pktmode, (int __user *) arg))
return -EFAULT;
if (pktmode) {
if (!tty->packet) {
tty->packet = 1;
tty->link->ctrl_status = 0;
}
} else
tty->packet = 0;
return 0;
}
default:
/* Try the mode commands */
return tty_mode_ioctl(tty, file, cmd, arg);
}
}
EXPORT_SYMBOL(n_tty_ioctl);
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