#include <linux/compat.h>
#include <linux/uaccess.h>
#include <linux/termios_internal.h>
+#include <linux/fs.h>
#include <linux/kbd_kern.h>
#include <linux/vt_kern.h>
}
EXPORT_SYMBOL(start_tty);
-static void tty_update_time(struct timespec64 *time)
+static void tty_update_time(struct tty_struct *tty, bool mtime)
{
time64_t sec = ktime_get_real_seconds();
+ struct tty_file_private *priv;
- /*
- * We only care if the two values differ in anything other than the
- * lower three bits (i.e every 8 seconds). If so, then we can update
- * the time of the tty device, otherwise it could be construded as a
- * security leak to let userspace know the exact timing of the tty.
- */
- if ((sec ^ time->tv_sec) & ~7)
- time->tv_sec = sec;
+ spin_lock(&tty->files_lock);
+ list_for_each_entry(priv, &tty->tty_files, list) {
+ struct inode *inode = file_inode(priv->file);
+ struct timespec64 *time = mtime ? &inode->i_mtime : &inode->i_atime;
+
+ /*
+ * We only care if the two values differ in anything other than the
+ * lower three bits (i.e every 8 seconds). If so, then we can update
+ * the time of the tty device, otherwise it could be construded as a
+ * security leak to let userspace know the exact timing of the tty.
+ */
+ if ((sec ^ time->tv_sec) & ~7)
+ time->tv_sec = sec;
+ }
+ spin_unlock(&tty->files_lock);
}
/*
tty_ldisc_deref(ld);
if (i > 0)
- tty_update_time(&inode->i_atime);
+ tty_update_time(tty, false);
return i;
}
cond_resched();
}
if (written) {
- tty_update_time(&file_inode(file)->i_mtime);
+ tty_update_time(tty, true);
ret = written;
}
out: