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tty_ioctl: drag screaming into compliance with the coding style

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Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox
2008-02-08 04:18:48 -08:00
committed by Linus Torvalds
parent 37bdfb074e
commit 355d95a1c8
1 changed files with 180 additions and 182 deletions
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342
drivers/char/tty_ioctl.c
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@@ -50,7 +50,7 @@
* Locking: none * 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 #ifdef TTY_DEBUG_WAIT_UNTIL_SENT
char buf[64]; char buf[64];
@@ -67,7 +67,6 @@ void tty_wait_until_sent(struct tty_struct * tty, long timeout)
if (tty->driver->wait_until_sent) if (tty->driver->wait_until_sent)
tty->driver->wait_until_sent(tty, timeout); tty->driver->wait_until_sent(tty, timeout);
} }
EXPORT_SYMBOL(tty_wait_until_sent); EXPORT_SYMBOL(tty_wait_until_sent);
static void unset_locked_termios(struct ktermios *termios, static void unset_locked_termios(struct ktermios *termios,
@@ -76,7 +75,7 @@ static void unset_locked_termios(struct ktermios *termios,
{ {
int i; 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) { if (!locked) {
printk(KERN_WARNING "Warning?!? termios_locked is NULL.\n"); 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_cflag, old->c_cflag, locked->c_cflag);
NOSET_MASK(termios->c_lflag, old->c_lflag, locked->c_lflag); NOSET_MASK(termios->c_lflag, old->c_lflag, locked->c_lflag);
termios->c_line = locked->c_line ? old->c_line : termios->c_line; 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] ? termios->c_cc[i] = locked->c_cc[i] ?
old->c_cc[i] : termios->c_cc[i]; old->c_cc[i] : termios->c_cc[i];
/* FIXME: What should we do for i/ospeed */ /* 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]; return baud_table[cbaud];
} }
EXPORT_SYMBOL(tty_termios_baud_rate); 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); return tty_termios_baud_rate(termios);
#endif #endif
} }
EXPORT_SYMBOL(tty_termios_input_baud_rate); EXPORT_SYMBOL(tty_termios_input_baud_rate);
/** /**
@@ -338,7 +335,6 @@ speed_t tty_get_baud_rate(struct tty_struct *tty)
return baud; return baud;
} }
EXPORT_SYMBOL(tty_get_baud_rate); 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_ispeed = old->c_ispeed;
new->c_ospeed = old->c_ospeed; new->c_ospeed = old->c_ospeed;
} }
EXPORT_SYMBOL(tty_termios_copy_hw); EXPORT_SYMBOL(tty_termios_copy_hw);
/** /**
@@ -395,7 +390,7 @@ EXPORT_SYMBOL(tty_termios_hw_change);
* Locking: termios_sem * 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; int canon_change;
struct ktermios old_termios = *tty->termios; struct ktermios old_termios = *tty->termios;
@@ -470,7 +465,7 @@ static void change_termios(struct tty_struct * tty, struct ktermios * new_termio
* Called functions take ldisc and termios_sem locks * 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 ktermios tmp_termios;
struct tty_ldisc *ld; struct tty_ldisc *ld;
@@ -501,8 +496,8 @@ static int set_termios(struct tty_struct * tty, void __user *arg, int opt)
return -EFAULT; return -EFAULT;
#endif #endif
/* If old style Bfoo values are used then load c_ispeed/c_ospeed with the real speed /* If old style Bfoo values are used then load c_ispeed/c_ospeed
so its unconditionally usable */ * with the real speed so its unconditionally usable */
tmp_termios.c_ispeed = tty_termios_input_baud_rate(&tmp_termios); tmp_termios.c_ispeed = tty_termios_input_baud_rate(&tmp_termios);
tmp_termios.c_ospeed = tty_termios_baud_rate(&tmp_termios); tmp_termios.c_ospeed = tty_termios_baud_rate(&tmp_termios);
@@ -529,14 +524,14 @@ static int set_termios(struct tty_struct * tty, void __user *arg, int opt)
return 0; 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)) if (kernel_termios_to_user_termio(termio, tty->termios))
return -EFAULT; return -EFAULT;
return 0; return 0;
} }
static unsigned long inq_canon(struct tty_struct * tty) static unsigned long inq_canon(struct tty_struct *tty)
{ {
int nr, head, tail; int nr, head, tail;
@@ -561,7 +556,7 @@ static unsigned long inq_canon(struct tty_struct * tty)
* *
* The "sg_flags" translation is a joke.. * 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; int flags = 0;
@@ -579,7 +574,7 @@ static int get_sgflags(struct tty_struct * tty)
return flags; 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; struct sgttyb tmp;
@@ -594,7 +589,7 @@ static int get_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
return copy_to_user(sgttyb, &tmp, sizeof(tmp)) ? -EFAULT : 0; 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_iflag = ICRNL | IXON;
termios->c_oflag = 0; termios->c_oflag = 0;
@@ -631,7 +626,7 @@ static void set_sgflags(struct ktermios * termios, int flags)
* Locking: termios_sem * 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; int retval;
struct sgttyb tmp; struct sgttyb tmp;
@@ -651,7 +646,8 @@ static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
set_sgflags(&termios, tmp.sg_flags); set_sgflags(&termios, tmp.sg_flags);
/* Try and encode into Bfoo format */ /* Try and encode into Bfoo format */
#ifdef BOTHER #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 #endif
mutex_unlock(&tty->termios_mutex); mutex_unlock(&tty->termios_mutex);
change_termios(tty, &termios); change_termios(tty, &termios);
@@ -660,7 +656,7 @@ static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
#endif #endif
#ifdef TIOCGETC #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; 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; 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; struct tchars tmp;
@@ -690,20 +686,22 @@ static int set_tchars(struct tty_struct * tty, struct tchars __user * tchars)
#endif #endif
#ifdef TIOCGLTC #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; struct ltchars tmp;
tmp.t_suspc = tty->termios->c_cc[VSUSP]; 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_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_werasc = tty->termios->c_cc[VWERASE];
tmp.t_lnextc = tty->termios->c_cc[VLNEXT]; tmp.t_lnextc = tty->termios->c_cc[VLNEXT];
return copy_to_user(ltchars, &tmp, sizeof(tmp)) ? -EFAULT : 0; 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; struct ltchars tmp;
@@ -711,9 +709,11 @@ static int set_ltchars(struct tty_struct * tty, struct ltchars __user * ltchars)
return -EFAULT; return -EFAULT;
tty->termios->c_cc[VSUSP] = tmp.t_suspc; 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[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[VWERASE] = tmp.t_werasc;
tty->termios->c_cc[VLNEXT] = tmp.t_lnextc; tty->termios->c_cc[VLNEXT] = tmp.t_lnextc;
return 0; return 0;
@@ -761,10 +761,10 @@ static int send_prio_char(struct tty_struct *tty, char ch)
* consistent mode setting. * 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) unsigned int cmd, unsigned long arg)
{ {
struct tty_struct * real_tty; struct tty_struct *real_tty;
void __user *p = (void __user *)arg; void __user *p = (void __user *)arg;
if (tty->driver->type == TTY_DRIVER_TYPE_PTY && 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) { switch (cmd) {
#ifdef TIOCGETP #ifdef TIOCGETP
case TIOCGETP: case TIOCGETP:
return get_sgttyb(real_tty, (struct sgttyb __user *) arg); return get_sgttyb(real_tty, (struct sgttyb __user *) arg);
case TIOCSETP: case TIOCSETP:
case TIOCSETN: case TIOCSETN:
return set_sgttyb(real_tty, (struct sgttyb __user *) arg); return set_sgttyb(real_tty, (struct sgttyb __user *) arg);
#endif #endif
#ifdef TIOCGETC #ifdef TIOCGETC
case TIOCGETC: case TIOCGETC:
return get_tchars(real_tty, p); return get_tchars(real_tty, p);
case TIOCSETC: case TIOCSETC:
return set_tchars(real_tty, p); return set_tchars(real_tty, p);
#endif #endif
#ifdef TIOCGLTC #ifdef TIOCGLTC
case TIOCGLTC: case TIOCGLTC:
return get_ltchars(real_tty, p); return get_ltchars(real_tty, p);
case TIOCSLTC: case TIOCSLTC:
return set_ltchars(real_tty, p); return set_ltchars(real_tty, p);
#endif #endif
case TCSETSF: case TCSETSF:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_OLD); return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_OLD);
case TCSETSW: case TCSETSW:
return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_OLD); return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_OLD);
case TCSETS: case TCSETS:
return set_termios(real_tty, p, TERMIOS_OLD); return set_termios(real_tty, p, TERMIOS_OLD);
#ifndef TCGETS2 #ifndef TCGETS2
case TCGETS: case TCGETS:
if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios)) if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios))
return -EFAULT; return -EFAULT;
return 0; return 0;
#else #else
case TCGETS: case TCGETS:
if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios)) if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios))
return -EFAULT; return -EFAULT;
return 0; return 0;
case TCGETS2: case TCGETS2:
if (kernel_termios_to_user_termios((struct termios2 __user *)arg, real_tty->termios)) if (kernel_termios_to_user_termios((struct termios2 __user *)arg, real_tty->termios))
return -EFAULT; return -EFAULT;
return 0; return 0;
case TCSETSF2: case TCSETSF2:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT); return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT);
case TCSETSW2: case TCSETSW2:
return set_termios(real_tty, p, TERMIOS_WAIT); return set_termios(real_tty, p, TERMIOS_WAIT);
case TCSETS2: case TCSETS2:
return set_termios(real_tty, p, 0); return set_termios(real_tty, p, 0);
#endif #endif
case TCGETA: case TCGETA:
return get_termio(real_tty, p); return get_termio(real_tty, p);
case TCSETAF: case TCSETAF:
return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_TERMIO); return set_termios(real_tty, p, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_TERMIO);
case TCSETAW: case TCSETAW:
return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_TERMIO); return set_termios(real_tty, p, TERMIOS_WAIT | TERMIOS_TERMIO);
case TCSETA: case TCSETA:
return set_termios(real_tty, p, TERMIOS_TERMIO); return set_termios(real_tty, p, TERMIOS_TERMIO);
#ifndef TCGETS2 #ifndef TCGETS2
case TIOCGLCKTRMIOS: case TIOCGLCKTRMIOS:
if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios_locked)) if (kernel_termios_to_user_termios((struct termios __user *)arg, real_tty->termios_locked))
return -EFAULT; return -EFAULT;
return 0; return 0;
case TIOCSLCKTRMIOS:
case TIOCSLCKTRMIOS: if (!capable(CAP_SYS_ADMIN))
if (!capable(CAP_SYS_ADMIN)) return -EPERM;
return -EPERM; if (user_termios_to_kernel_termios(real_tty->termios_locked,
if (user_termios_to_kernel_termios(real_tty->termios_locked, (struct termios __user *) arg)) (struct termios __user *) arg))
return -EFAULT; return -EFAULT;
return 0; return 0;
#else #else
case TIOCGLCKTRMIOS: case TIOCGLCKTRMIOS:
if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios_locked)) if (kernel_termios_to_user_termios_1((struct termios __user *)arg, real_tty->termios_locked))
return -EFAULT; return -EFAULT;
return 0; return 0;
case TIOCSLCKTRMIOS:
case TIOCSLCKTRMIOS: if (!capable(CAP_SYS_ADMIN))
if (!capable(CAP_SYS_ADMIN)) return -EPERM;
return -EPERM; if (user_termios_to_kernel_termios_1(real_tty->termios_locked,
if (user_termios_to_kernel_termios_1(real_tty->termios_locked, (struct termios __user *) arg)) (struct termios __user *) arg))
return -EFAULT; return -EFAULT;
return 0; return 0;
#endif #endif
case TIOCGSOFTCAR: case TIOCGSOFTCAR:
return put_user(C_CLOCAL(tty) ? 1 : 0, (int __user *)arg); return put_user(C_CLOCAL(tty) ? 1 : 0,
case TIOCSSOFTCAR: (int __user *)arg);
if (get_user(arg, (unsigned int __user *) arg)) case TIOCSSOFTCAR:
return -EFAULT; if (get_user(arg, (unsigned int __user *) arg))
mutex_lock(&tty->termios_mutex); return -EFAULT;
tty->termios->c_cflag = mutex_lock(&tty->termios_mutex);
((tty->termios->c_cflag & ~CLOCAL) | tty->termios->c_cflag =
(arg ? CLOCAL : 0)); ((tty->termios->c_cflag & ~CLOCAL) |
mutex_unlock(&tty->termios_mutex); (arg ? CLOCAL : 0));
return 0; mutex_unlock(&tty->termios_mutex);
default: return 0;
return -ENOIOCTLCMD; default:
return -ENOIOCTLCMD;
} }
} }
EXPORT_SYMBOL_GPL(tty_mode_ioctl); EXPORT_SYMBOL_GPL(tty_mode_ioctl);
int tty_perform_flush(struct tty_struct *tty, unsigned long arg) 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); tty_ldisc_deref(ld);
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(tty_perform_flush); 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) unsigned int cmd, unsigned long arg)
{ {
struct tty_struct * real_tty; struct tty_struct *real_tty;
int retval; int retval;
if (tty->driver->type == TTY_DRIVER_TYPE_PTY && 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; real_tty = tty;
switch (cmd) { switch (cmd) {
case TCXONC: case TCXONC:
retval = tty_check_change(tty); retval = tty_check_change(tty);
if (retval) if (retval)
return retval; return retval;
switch (arg) { switch (arg) {
case TCOOFF: case TCOOFF:
if (!tty->flow_stopped) { if (!tty->flow_stopped) {
tty->flow_stopped = 1; tty->flow_stopped = 1;
stop_tty(tty); 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;
} }
return 0; break;
case TCFLSH: case TCOON:
return tty_perform_flush(tty, arg); if (tty->flow_stopped) {
case TIOCOUTQ: tty->flow_stopped = 0;
return put_user(tty->driver->chars_in_buffer ? start_tty(tty);
tty->driver->chars_in_buffer(tty) : 0, }
(int __user *) arg); break;
case TIOCINQ: case TCIOFF:
retval = tty->read_cnt; if (STOP_CHAR(tty) != __DISABLED_CHAR)
if (L_ICANON(tty)) return send_prio_char(tty, STOP_CHAR(tty));
retval = inq_canon(tty); break;
return put_user(retval, (unsigned int __user *) arg); case TCION:
case TIOCPKT: if (START_CHAR(tty) != __DISABLED_CHAR)
{ return send_prio_char(tty, START_CHAR(tty));
int pktmode; break;
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: default:
/* Try the mode commands */ return -EINVAL;
return tty_mode_ioctl(tty, file, cmd, arg);
} }
} 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); EXPORT_SYMBOL(n_tty_ioctl);