diff options
Diffstat (limited to 'lib/buffer.h')
| -rw-r--r-- | lib/buffer.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/lib/buffer.h b/lib/buffer.h index 9d453b1d..2acd571f 100644 --- a/lib/buffer.h +++ b/lib/buffer.h @@ -33,7 +33,7 @@ struct buffer /* Current allocated data. */ unsigned long alloc; - /* Total length of buffer. */ + /* Size of each buffer_data chunk. */ unsigned long size; /* For allocation. */ @@ -47,18 +47,17 @@ struct buffer /* Data container. */ struct buffer_data { - struct buffer *parent; struct buffer_data *next; struct buffer_data *prev; - /* Acctual data stream. */ - unsigned char *data; - /* Current pointer. */ unsigned long cp; /* Start pointer. */ unsigned long sp; + + /* Actual data stream (variable length). */ + unsigned char data[0]; /* real dimension is buffer->size */ }; /* Buffer prototypes. */ @@ -74,4 +73,11 @@ int buffer_flush_vty_all (struct buffer *, int, int, int); int buffer_flush_window (struct buffer *, int, int, int, int, int); int buffer_empty (struct buffer *); +/* buffer_flush_available attempts to flush the queued data to the given + file descriptor. It returns 0 if the buffers are now empty (after + flushing), or 1 if more data remains on the buffer queue (must be flushed + later). This function (unlike the other buffer_flush* functions) is + designed to work with non-blocking file descriptors. */ +int buffer_flush_available(struct buffer *, int fd); + #endif /* _ZEBRA_BUFFER_H */ |