Initial commit

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

casadm/cas_lib_utils.h

@@ -0,0 +1,68 @@
+/*
+* Copyright(c) 2012-2019 Intel Corporation
+* SPDX-License-Identifier: BSD-3-Clause-Clear
+*/
+
+#ifndef __CAS_LIB_UTILS_H__
+#define __CAS_LIB_UTILS_H__
+
+struct progress_status {
+	uint64_t
+	dirty_clines_initial;	/*!< amount of dirty clines when command is initiated */
+
+	uint64_t
+	dirty_clines_curr;		/*!< amount of dirty clines at current progress level */
+
+	int progress_accumulated;	/*!< this is to ensure that progressbar is always
+					 *!< from 0 to 100% and progress indicated by it
+					 *!< never actually drops. */
+	int time_started;		/*!< time when particular long running
+					 *!< operation was started */
+	char *friendly_name;		/*!< name of management operation that shall
+					 *!< be displayed in command prompt */
+	int cache_id;			/*!< cache id */
+	int core_id;			/*!< core id */
+};
+
+
+void init_progress_bar(struct progress_status *ps);
+void print_progress_bar_or_indicator(float prog, struct progress_status *ps);
+int run_ioctl(int fd, int command, void *cmd);
+int run_ioctl_interruptible(int fd, int command, void *cmd,
+		char *friendly_name, int cache_id, int core_id);
+int open_ctrl_device();
+int was_ioctl_interrupted();
+void set_default_sig_handler();
+void set_safe_lib_constraint_handler();
+
+
+/**
+ * function creates pair files representing an unnamed pipe.
+ * this is highlevel counterpart to pipe syscall.
+ *
+ * null is returned upon failure;
+ *
+ * FILE *pipes[2] is returned upon success.
+ * 1 is writing end, 0 is reading end of a pipe
+ */
+int create_pipe_pair(FILE **);
+
+/**
+ * Check if string is empty
+ *
+ * @param str - reference to the string
+ * @retval 1 string is empty
+ * @retval 0 string is not empty
+ */
+static inline int strempty(const char *str)
+{
+	if (NULL == str) {
+		return 1;
+	} else if ('\0' == str[0]) {
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+#endif