summaryrefslogtreecommitdiff
path: root/kernel/printk
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/printk')
-rw-r--r--kernel/printk/printk.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 525038745a14..35cc5f548860 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -974,6 +974,16 @@ static loff_t devkmsg_llseek(struct file *file, loff_t offset, int whence)
user->idx = log_next_idx;
user->seq = log_next_seq;
break;
+ case SEEK_CUR:
+ /*
+ * It isn't supported due to the record nature of this
+ * interface: _SET _DATA and _END point to very specific
+ * record positions, while _CUR would be more useful in case
+ * of a byte-based log. Because of that, return the default
+ * errno value for invalid seek operation.
+ */
+ ret = -ESPIPE;
+ break;
default:
ret = -EINVAL;
}