Added some small modifications

src/entry.c

@@ -1,6 +1,7 @@
 #include "entry.h"
 
 #include "disk.h"
+#include "backing.h"
 
 #include <stdlib.h>
 #include <string.h>
@@ -199,6 +200,11 @@ Status ListEntries(char*** _entries) {
 		if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
 			continue;
 
+		bool exists;
+		Status status = DoesEntryExist(entry->d_name, &exists);
+		if (status != SUCCESS || !exists)
+			continue;
+
 		char** new_entries = realloc(*_entries, (count + 2) * sizeof(char*)); // +2 for the new entry and the NULL terminator
 		if (new_entries == NULL) {
 			Log(LOG_LEVEL_ERROR, "Failed to reallocate memory for the entries list (%s).", strerror(errno));
@@ -282,6 +288,40 @@ Status AddRootEntryDisk(const char* entry_identifier, uint64_t disk_size) {
 	return status;
 }
 
+Status AddBackedEntryDisk(const char* entry_identifier, const char* backing_identifier) {
+	// Check if the disk already exists
+	bool exists;
+	Status status = DoesEntryDiskExist(entry_identifier, &exists);
+	if (status != SUCCESS)
+		return status;
+
+	if (exists) {
+		Log(LOG_LEVEL_ERROR, "The disk for the entry '%s' already exists.", entry_identifier);
+		return FAILURE;
+	}
+
+	// Get the backing disk path
+	char* backing_disk_path = NULL;
+	status = GetBackingDiskPath(backing_identifier, &backing_disk_path);
+	if (status != SUCCESS)
+		return status;
+
+	// Get the disk path
+	char* entry_disk_path = NULL;
+	status = GetEntryDiskPath(entry_identifier, &entry_disk_path);
+	if (status != SUCCESS) {
+		free(backing_disk_path);
+		return status;
+	}
+
+	// Create the disk
+	status = CreateBackedDisk(entry_disk_path, backing_disk_path);
+	free(backing_disk_path);
+	free(entry_disk_path);
+
+	return status;
+}
+
 Status RemoveEntryDisk(const char* entry_identifier) {
 	// Check if the disk exists
 	bool exists;