* support/ab.c (open_postfile): Use apr_file_read_full, tidy up error

static int open_postfile(const char *pfile)

{

    apr_file_t *postfd = NULL;

    apr_file_t *postfd;

    apr_finfo_t finfo;

    apr_fileperms_t mode = APR_OS_DEFAULT;

    apr_size_t length;

    apr_status_t rv;

    char errmsg[120];

    rv = apr_file_open(&postfd, pfile, APR_READ, mode, cntxt);

    rv = apr_file_open(&postfd, pfile, APR_READ, APR_OS_DEFAULT, cntxt);

    if (rv != APR_SUCCESS) {

        printf("Invalid postfile name (%s): %s\n", pfile,

        fprintf(stderr, "ab: Could not open POST data file (%s): %s\n", pfile,

                apr_strerror(rv, errmsg, sizeof errmsg));

        return rv;

    }

    apr_file_info_get(&finfo, APR_FINFO_NORM, postfd);

    postlen = (apr_size_t)finfo.size;

    postdata = (char *) malloc(postlen);

    postdata = malloc(postlen);

    if (!postdata) {

        printf("Can\'t alloc postfile buffer\n");

        fprintf(stderr, "ab: Could not allocate POST data buffer\n");

        return APR_ENOMEM;

    }

    length = postlen;

    rv = apr_file_read(postfd, postdata, &length);

    rv = apr_file_read_full(postfd, postdata, postlen, NULL);

    if (rv != APR_SUCCESS) {

        printf("error reading postfile: %s\n",

        fprintf(stderr, "ab: Could not read POST data file: %s\n",

                apr_strerror(rv, errmsg, sizeof errmsg));

        return rv;

    }

    if (length != postlen) {

        printf("error reading postfile: read only %"

           APR_SIZE_T_FMT " bytes",

           length);

        return APR_EINVAL;

    }

    apr_file_close(postfd);

    return 0;

}