From 4ab499899ce2ed884a1235ada501c39e355911e7 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 10 Feb 2013 20:43:51 +0100 Subject: [PATCH] blobmsg: add blobmsg_realloc_string_buffer() Signed-off-by: Felix Fietkau --- blobmsg.c | 17 +++++++++++++++++ blobmsg.h | 1 + 2 files changed, 18 insertions(+) diff --git a/blobmsg.c b/blobmsg.c index 7257eae..8db2238 100644 --- a/blobmsg.c +++ b/blobmsg.c @@ -233,6 +233,23 @@ blobmsg_alloc_string_buffer(struct blob_buf *buf, const char *name, int maxlen) return data_dest; } +void * +blobmsg_realloc_string_buffer(struct blob_buf *buf, int maxlen) +{ + struct blob_attr *attr = blob_next(buf->head); + int offset = attr_to_offset(buf, blob_next(buf->head)) + blob_pad_len(attr); + int required = maxlen - (buf->buflen - offset); + + if (required <= 0) + goto out; + + blob_buf_grow(buf, required); + attr = blob_next(buf->head); + +out: + return blobmsg_data(attr); +} + void blobmsg_add_string_buffer(struct blob_buf *buf) { diff --git a/blobmsg.h b/blobmsg.h index 9fdf486..c4bf10d 100644 --- a/blobmsg.h +++ b/blobmsg.h @@ -192,6 +192,7 @@ static inline char *blobmsg_get_string(struct blob_attr *attr) } void *blobmsg_alloc_string_buffer(struct blob_buf *buf, const char *name, int maxlen); +void *blobmsg_realloc_string_buffer(struct blob_buf *buf, int maxlen); void blobmsg_add_string_buffer(struct blob_buf *buf); /* blobmsg to json formatting */ -- 2.11.0