libubox/tests/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;
}