X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=drivers%2Fchar%2Fn_tty.c;h=038056911934c3b60a10a70553702ff33cb070b6;hb=71ad556dadcd303b4d32e9b890dcf1ccfbe9aeb3;hp=b3d4ccc33a47e777d1a391ae9a85bde2f450051e;hpb=853da0022023c046e0a5ccc51d427745f0c94de7;p=cascardo%2Flinux.git

diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index b3d4ccc33a47..038056911934 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -45,6 +45,8 @@
 #include <linux/slab.h>
 #include <linux/poll.h>
 #include <linux/bitops.h>
+#include <linux/audit.h>
+#include <linux/file.h>
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -78,6 +80,13 @@ static inline void free_buf(unsigned char *buf)
 		free_page((unsigned long) buf);
 }
 
+static inline int tty_put_user(struct tty_struct *tty, unsigned char x,
+			       unsigned char __user *ptr)
+{
+	tty_audit_add_data(tty, &x, 1);
+	return put_user(x, ptr);
+}
+
 /**
  *	n_tty_set__room	-	receive space
  *	@tty: terminal
@@ -1153,6 +1162,7 @@ static int copy_from_read_buf(struct tty_struct *tty,
 	if (n) {
 		retval = copy_to_user(*b, &tty->read_buf[tty->read_tail], n);
 		n -= retval;
+		tty_audit_add_data(tty, &tty->read_buf[tty->read_tail], n);
 		spin_lock_irqsave(&tty->read_lock, flags);
 		tty->read_tail = (tty->read_tail + n) & (N_TTY_BUF_SIZE-1);
 		tty->read_cnt -= n;
@@ -1191,6 +1201,7 @@ static int job_control(struct tty_struct *tty, struct file *file)
 			    is_current_pgrp_orphaned())
 				return -EIO;
 			kill_pgrp(task_pgrp(current), SIGTTIN, 1);
+			set_thread_flag(TIF_SIGPENDING);
 			return -ERESTARTSYS;
 		}
 	}
@@ -1278,7 +1289,7 @@ do_it_again:
 				break;
 			cs = tty->link->ctrl_status;
 			tty->link->ctrl_status = 0;
-			if (put_user(cs, b++)) {
+			if (tty_put_user(tty, cs, b++)) {
 				retval = -EFAULT;
 				b--;
 				break;
@@ -1320,7 +1331,7 @@ do_it_again:
 
 		/* Deal with packet mode. */
 		if (tty->packet && b == buf) {
-			if (put_user(TIOCPKT_DATA, b++)) {
+			if (tty_put_user(tty, TIOCPKT_DATA, b++)) {
 				retval = -EFAULT;
 				b--;
 				break;
@@ -1351,15 +1362,17 @@ do_it_again:
 				spin_unlock_irqrestore(&tty->read_lock, flags);
 
 				if (!eol || (c != __DISABLED_CHAR)) {
-					if (put_user(c, b++)) {
+					if (tty_put_user(tty, c, b++)) {
 						retval = -EFAULT;
 						b--;
 						break;
 					}
 					nr--;
 				}
-				if (eol)
+				if (eol) {
+					tty_audit_push(tty);
 					break;
+				}
 			}
 			if (retval)
 				break;
@@ -1537,7 +1550,8 @@ static unsigned int normal_poll(struct tty_struct * tty, struct file * file, pol
 		else
 			tty->minimum_to_wake = 1;
 	}
-	if (tty->driver->chars_in_buffer(tty) < WAKEUP_CHARS &&
+	if (!tty_is_writelocked(tty) &&
+			tty->driver->chars_in_buffer(tty) < WAKEUP_CHARS &&
 			tty->driver->write_room(tty) > 0)
 		mask |= POLLOUT | POLLWRNORM;
 	return mask;