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-rw-r--r--ubifs-utils/common/mutex.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/ubifs-utils/common/mutex.h b/ubifs-utils/common/mutex.h
new file mode 100644
index 0000000..4bf018b
--- /dev/null
+++ b/ubifs-utils/common/mutex.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_MUTEX_H_
+#define __LINUX_MUTEX_H_
+
+#include <pthread.h>
+
+struct mutex {
+ pthread_mutex_t lock;
+};
+
+#define mutex_init(x) pthread_mutex_init(&(x)->lock, NULL)
+
+#define mutex_lock(x) pthread_mutex_lock(&(x)->lock)
+#define mutex_lock_nested(x, c) pthread_mutex_lock(&(x)->lock)
+#define mutex_unlock(x) pthread_mutex_unlock(&(x)->lock)
+#define mutex_is_locked(x) (pthread_mutex_trylock(&(x)->lock) == EBUSY)
+
+#endif