Function get_last_sequence

lib/common/utils.c:1117–1176

}

int
get_last_sequence(const char *directory, const char *series)
{
    FILE *file_strm = NULL;
    int start = 0, length = 0, read_len = 0;
    char *series_file = NULL;
    char *buffer = NULL;
    int seq = 0;
    int len = 36;

    CRM_CHECK(directory != NULL, return 0);
    CRM_CHECK(series != NULL, return 0);

    len += strlen(directory);
    len += strlen(series);
    series_file = calloc(1, len);
    CRM_CHECK(series_file != NULL, return 0);
    sprintf(series_file, "%s/%s.last", directory, series);

    file_strm = fopen(series_file, "r");
    if (file_strm == NULL) {
        crm_debug("Series file %s does not exist", series_file);
        free(series_file);
        return 0;
    }

    /* see how big the file is */
    start = ftell(file_strm);
    fseek(file_strm, 0L, SEEK_END);
    length = ftell(file_strm);
    fseek(file_strm, 0L, start);

    CRM_ASSERT(length >= 0);
    CRM_ASSERT(start == ftell(file_strm));

    if (length <= 0) {
        crm_info("%s was not valid", series_file);
        free(buffer);
        buffer = NULL;

    } else {
        crm_trace("Reading %d bytes from file", length);
        buffer = calloc(1, (length + 1));
        read_len = fread(buffer, 1, length, file_strm);
        if (read_len != length) {
            crm_err("Calculated and read bytes differ: %d vs. %d", length, read_len);
            free(buffer);
            buffer = NULL;
        }
    }

    seq = crm_parse_int(buffer, "0");
    fclose(file_strm);

    crm_trace("Found %d in %s", seq, series_file);

    free(series_file);
    free(buffer);