diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/tty_io.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 05400acbc456..b0452688308c 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -941,6 +941,14 @@ void start_tty(struct tty_struct *tty) EXPORT_SYMBOL(start_tty); +static void tty_update_time(struct timespec *time) +{ + unsigned long sec = get_seconds(); + sec -= sec % 60; + if ((long)(sec - time->tv_sec) > 0) + time->tv_sec = sec; +} + /** * tty_read - read method for tty device files * @file: pointer to tty file @@ -960,10 +968,11 @@ static ssize_t tty_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { int i; + struct inode *inode = file_inode(file); struct tty_struct *tty = file_tty(file); struct tty_ldisc *ld; - if (tty_paranoia_check(tty, file_inode(file), "tty_read")) + if (tty_paranoia_check(tty, inode, "tty_read")) return -EIO; if (!tty || (test_bit(TTY_IO_ERROR, &tty->flags))) return -EIO; @@ -977,6 +986,9 @@ static ssize_t tty_read(struct file *file, char __user *buf, size_t count, i = -EIO; tty_ldisc_deref(ld); + if (i > 0) + tty_update_time(&inode->i_atime); + return i; } @@ -1077,8 +1089,10 @@ static inline ssize_t do_tty_write( break; cond_resched(); } - if (written) + if (written) { + tty_update_time(&file_inode(file)->i_mtime); ret = written; + } out: tty_write_unlock(tty); return ret; |