diff --git a/src/utils.c b/src/utils.c
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2020 Texas Instruments Incorporated - https://www.ti.com
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Texas Instruments Incorporated nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+int get_child_dir_suffix(char *fpath, const char *child_name_pattern,
+ unsigned int *suffix)
+{
+ struct dirent *iter;
+ DIR *parent;
+ int ret = -ENODEV;
+
+ parent = opendir(fpath);
+ if (!parent)
+ return -errno;
+
+ while ((iter = readdir(parent))) {
+ if (iter->d_type == DT_DIR &&
+ sscanf(iter->d_name, child_name_pattern, suffix)) {
+ ret = 0;
+ break;
+ }
+ }
+
+ closedir(parent);
+ return ret;
+}
+
+int file_read_string(char *fpath, char *buf, int size)
+{
+ int fd, bytes;
+
+ fd = open(fpath, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "could not open %s: errno = %d\n",
+ fpath, errno);
+ return -errno;
+ }
+
+ bytes = read(fd, buf, size);
+ close(fd);
+ if (bytes <= 0) {
+ fprintf(stderr, "could not read %s: errno = %d\n",
+ fpath, errno);
+ return -EIO;
+ }
+ if (bytes >= size) {
+ fprintf(stderr, "%d bytes read from %s are larger than size %d\n",
+ bytes, fpath, size);
+ return -EIO;
+ }
+
+ /* suppress the newline */
+ buf[bytes - 1] = '\0';
+
+ return bytes;
+}
+
+int file_read_value(char *fpath)
+{
+ char buf[32];
+ int ret;
+
+ ret = file_read_string(fpath, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ return strtol(buf, NULL, 0);
+}
+
+int check_dir(char *dirpath)
+{
+ struct stat s;
+
+ if (stat(dirpath, &s) == 0 && S_ISDIR(s.st_mode))
+ return 0;
+
+ return -ENOENT;
+}
+
+/* Returns a pointer to allocated memory, needs to be freed once done */
+char *file_deref_link(char *fpath, char *link_name)
+{
+ char path[512] = { 0 };
+ char rel_path[256] = { 0 };
+ int n, nr;
+
+ n = snprintf(path, 256, "%s/%s", fpath, link_name);
+ if (n < 0 || n >= 256) {
+ fprintf(stderr, "%s: could not create full path string\n",
+ __func__);
+ return NULL;
+ }
+
+ nr = readlink(path, rel_path, sizeof(rel_path));
+ if (nr < 0) {
+ fprintf(stderr, "%s: readlink failed for %s\n", __func__, path);
+ return NULL;
+ }
+
+ if (n + nr >= 512) {
+ fprintf(stderr, "%s: full relative path exceeds buffer size, n = %d nr = %d\n",
+ __func__, n, nr);
+ return NULL;
+ }
+
+ memset(path, 0, sizeof(path));
+ sprintf(path, "%s/%s", fpath, rel_path);
+
+ return realpath(path, NULL);
+}