1 files changed, 55 insertions, 0 deletions
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..e47c58e
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,55 @@
+/*******************************************************************************
+ * Copyright (C) 2011, Linaro Limited.
+ *
+ * This file is part of PowerDebug.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Daniel Lezcano <daniel.lezcano@linaro.org> (IBM Corporation)
+ *       - initial API and implementation
+ *******************************************************************************/
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#undef _GNU_SOURCE
+#include <stdlib.h>
+
+/*
+ * This functions is a helper to read a specific file content and store
+ * the content inside a variable pointer passed as parameter, the format
+ * parameter gives the variable type to be read from the file.
+ *
+ * @path : directory path containing the file
+ * @name : name of the file to be read
+ * @format : the format of the format
+ * @value : a pointer to a variable to store the content of the file
+ * Returns 0 on success, -1 otherwise
+ */
+int file_read_value(const char *path, const char *name,
+                    const char *format, void *value)
+{
+        FILE *file;
+        char *rpath;
+        int ret;
+
+        ret = asprintf(&rpath, "%s/%s", path, name);
+        if (ret < 0)
+                return ret;
+
+        file = fopen(rpath, "r");
+        if (!file) {
+                ret = -1;
+                goto out_free;
+        }
+
+        ret = fscanf(file, format, value) == EOF ? -1 : 0;
+
+        fclose(file);
+out_free:
+        free(rpath);
+        return ret;
+}