[RFC PATCH 4/8] seq_buf: Add seq_buf_clear_buf()
From: Borislav Petkov
Date: Tue Jul 25 2017 - 11:47:51 EST
From: Borislav Petkov <bp@xxxxxxx>
This is the version which clears the supplied buffer too. Useful when
we're done with the buffer and want to clean it up and prepare it for
reuse.
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
include/linux/seq_buf.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h
index fb7eb9ccb1cd..8705a482e76c 100644
--- a/include/linux/seq_buf.h
+++ b/include/linux/seq_buf.h
@@ -28,6 +28,13 @@ static inline void seq_buf_clear(struct seq_buf *s)
s->readpos = 0;
}
+/* Like seq_buf_clear() but zero out the buffer too. */
+static inline void seq_buf_clear_buf(struct seq_buf *s)
+{
+ seq_buf_clear(s);
+ memset(s->buffer, 0, s->size);
+}
+
static inline void
seq_buf_init(struct seq_buf *s, unsigned char *buf, unsigned int size)
{
--
2.14.0.rc0