From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp
---
kernel/drivers/tty/tty_ioctl.c | 81 ++--------------------------------------
1 files changed, 4 insertions(+), 77 deletions(-)
diff --git a/kernel/drivers/tty/tty_ioctl.c b/kernel/drivers/tty/tty_ioctl.c
index d99fec4..803da2d 100644
--- a/kernel/drivers/tty/tty_ioctl.c
+++ b/kernel/drivers/tty/tty_ioctl.c
@@ -443,51 +443,6 @@
return 0;
}
-
-#ifdef TCGETX
-
-/**
- * set_termiox - set termiox fields if possible
- * @tty: terminal
- * @arg: termiox structure from user
- * @opt: option flags for ioctl type
- *
- * Implement the device calling points for the SYS5 termiox ioctl
- * interface in Linux
- */
-
-static int set_termiox(struct tty_struct *tty, void __user *arg, int opt)
-{
- struct termiox tnew;
- struct tty_ldisc *ld;
-
- if (tty->termiox == NULL)
- return -EINVAL;
- if (copy_from_user(&tnew, arg, sizeof(struct termiox)))
- return -EFAULT;
-
- ld = tty_ldisc_ref(tty);
- if (ld != NULL) {
- if ((opt & TERMIOS_FLUSH) && ld->ops->flush_buffer)
- ld->ops->flush_buffer(tty);
- tty_ldisc_deref(ld);
- }
- if (opt & TERMIOS_WAIT) {
- tty_wait_until_sent(tty, 0);
- if (signal_pending(current))
- return -ERESTARTSYS;
- }
-
- down_write(&tty->termios_rwsem);
- if (tty->ops->set_termiox)
- tty->ops->set_termiox(tty, &tnew);
- up_write(&tty->termios_rwsem);
- return 0;
-}
-
-#endif
-
-
#ifdef TIOCGETP
/*
* These are deprecated, but there is limited support..
@@ -815,24 +770,12 @@
return ret;
#endif
#ifdef TCGETX
- case TCGETX: {
- struct termiox ktermx;
- if (real_tty->termiox == NULL)
- return -EINVAL;
- down_read(&real_tty->termios_rwsem);
- memcpy(&ktermx, real_tty->termiox, sizeof(struct termiox));
- up_read(&real_tty->termios_rwsem);
- if (copy_to_user(p, &ktermx, sizeof(struct termiox)))
- ret = -EFAULT;
- return ret;
- }
+ case TCGETX:
case TCSETX:
- return set_termiox(real_tty, p, 0);
case TCSETXW:
- return set_termiox(real_tty, p, TERMIOS_WAIT);
case TCSETXF:
- return set_termiox(real_tty, p, TERMIOS_FLUSH);
-#endif
+ return -ENOTTY;
+#endif
case TIOCGSOFTCAR:
copy_termios(real_tty, &kterm);
ret = put_user((kterm.c_cflag & CLOCAL) ? 1 : 0,
@@ -866,7 +809,7 @@
ld->ops->flush_buffer(tty);
tty_unthrottle(tty);
}
- /* fall through */
+ fallthrough;
case TCOFLUSH:
tty_driver_flush_buffer(tty);
break;
@@ -941,19 +884,3 @@
}
}
EXPORT_SYMBOL(n_tty_ioctl_helper);
-
-#ifdef CONFIG_COMPAT
-long n_tty_compat_ioctl_helper(struct tty_struct *tty, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- case TIOCGLCKTRMIOS:
- case TIOCSLCKTRMIOS:
- return tty_mode_ioctl(tty, file, cmd, (unsigned long) compat_ptr(arg));
- default:
- return -ENOIOCTLCMD;
- }
-}
-EXPORT_SYMBOL(n_tty_compat_ioctl_helper);
-#endif
-
--
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