diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/seq_buf.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h index 7abeca1c166b..9830f905f0ee 100644 --- a/include/linux/seq_buf.h +++ b/include/linux/seq_buf.h @@ -174,6 +174,29 @@ static inline size_t seq_buf_strlen(struct seq_buf *s) } /** + * seq_buf_terminate - NUL-terminate the string in a seq_buf + * @s: the seq_buf handle + * + * Terminate @s->buffer exactly as seq_buf_str() and seq_buf_strlen() do, + * for callers that want neither the pointer nor the length and only need + * the buffer to be safe to read as a C string. A zero-sized seq_buf has + * nowhere to put a NUL and is left untouched. + * + * Nothing is returned on purpose: a caller that wants the length should + * use seq_buf_strlen(), which says so. + * + * After this function is called, s->buffer is safe to use + * in string operations. + */ +static inline void seq_buf_terminate(struct seq_buf *s) +{ + if (s->size == 0) + return; + + __seq_buf_terminate(s); +} + +/** * seq_buf_get_buf - get buffer to write arbitrary data to * @s: the seq_buf handle * @bufp: the beginning of the buffer is stored here |