test-blob-buflen.c

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#include <stdio.h>
 
#include "blobmsg.h"
 
/* chunks of 64KB to be added to blob-buffer */
#define BUFF_SIZE       0x10000
/* exceed maximum blob buff-length */
#define BUFF_CHUNKS     (((BLOB_ATTR_LEN_MASK + 1) / BUFF_SIZE) + 1)
 
int main(int argc, char **argv)
{
        int i;
        static struct blob_buf buf;
        blobmsg_buf_init(&buf);
        int prev_len = buf.buflen;
 
        for (i = 0; i < BUFF_CHUNKS; i++) {
                struct blob_attr *attr = blob_new(&buf, 0, BUFF_SIZE);
                if (!attr) {
                        fprintf(stderr, "SUCCESS: failed to allocate attribute\n");
                        break;
                }
                if (prev_len < buf.buflen) {
                        prev_len = buf.buflen;
                        continue;
                }
                fprintf(stderr, "ERROR: buffer length did not increase\n");
                return -1;
        }
        return 0;
}