Implemented some more functions. Next big step : AddBacking

src/backing.c

@@ -1,7 +1,15 @@
 #include "backing.h"
 
+#include "disk.h"
+#include "entry.h"
+
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <sys/stat.h>
 
 bool IsBackingIdentifierValid(const char* backing_identifier) {
 	if (backing_identifier == NULL)
@@ -22,7 +30,7 @@ bool IsBackingIdentifierValid(const char* backing_identifier) {
 		return false;
 
 	// Check that the identifier starts with a number
-	if (backing_identifier[0] >= '0' && backing_identifier[0] <= '9')
+	if (backing_identifier[0] < '0' || backing_identifier[0] > '9')
 		return false;
 
 	return true;

src/backing.h

@@ -7,3 +7,9 @@ int GetBackingIndex(const char* backing_identifier);
 
 Status GetBackingPoolPath(char** _backing_pool_path);
 Status GetBackingDiskPath(const char* backing_identifier, char** _backing_path);
+
+Status AddBacking(const char* backing_identifier, const char* entry_identifier);
+Status RemoveBacking(const char* backing_identifier);
+
+Status ListBackings(char*** _backings);
+Status GetLatestBacking(char** _backing_identifier);

src/sandbox.c

@@ -1,6 +1,7 @@
 #include "sandbox.h"
 
 #include "entry.h"
+#include "backing.h"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -145,7 +146,12 @@ int CommandAddEntry(int argc, char* argv[]) {
 		return EXIT_FAILURE;
 	}
 
-	return AddEntry(argv[0]);
+	Status status = AddEntry(argv[0]);
+	if (status != SUCCESS)
+		return status;
+
+	Log(LOG_LEVEL_INFO, "Added entry '%s'.", argv[0]);
+	return EXIT_SUCCESS;
 }
 
 int CommandRemoveEntry(int argc, char* argv[]) {
@@ -157,7 +163,12 @@ int CommandRemoveEntry(int argc, char* argv[]) {
 		return EXIT_FAILURE;
 	}
 
-	return RemoveEntry(argv[0]);
+	Status status = RemoveEntry(argv[0]);
+	if (status != SUCCESS)
+		return status;
+
+	Log(LOG_LEVEL_INFO, "Removed entry '%s'.", argv[0]);
+	return EXIT_SUCCESS;
 }
 
 int CommandListEntries(int argc, char* argv[]) {
@@ -187,5 +198,10 @@ int CommandClearEntries(int argc, char* argv[]) {
 		return EXIT_FAILURE;
 	}
 
-	return ClearEntries();
+	Status status = ClearEntries();
+	if (status != SUCCESS)
+		return status;
+
+	Log(LOG_LEVEL_INFO, "Cleared all entries.");
+	return EXIT_SUCCESS;
 }

src/utils.c

@@ -35,6 +35,7 @@ void Log(LogLevel level, const char* format, ...) {
 	case LOG_LEVEL_INFO:
 		color = "\033[0;36m";
 		level_str = "INFO";
+		break;
 	case LOG_LEVEL_WARNING:
 		color = "\033[0;33m";
 		level_str = "WARNING";
@@ -323,3 +324,51 @@ Status WriteFile(const char* path, const char* content) {
 
 	return status;
 }
+
+Status CopyFile(const char* source_path, const char* destination_path) {
+	// Open the source file
+	int source_file = open(source_path, O_RDONLY);
+	if (source_file == -1) {
+		Log(LOG_LEVEL_ERROR, "Failed to open the source file %s (%s).", source_path, strerror(errno));
+		return FAILURE;
+	}
+
+	// Open the destination file
+	int destination_file = open(destination_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+	if (destination_file == -1) {
+		Log(LOG_LEVEL_ERROR, "Failed to open the destination file %s (%s).", destination_path, strerror(errno));
+		close(source_file);
+		return FAILURE;
+	}
+
+	// Copy the file
+	char buffer[4096];
+	ssize_t bytes_read;
+	while ((bytes_read = read(source_file, buffer, sizeof(buffer))) > 0) {
+		ssize_t bytes_written = 0;
+		while (bytes_written < bytes_read) {
+			ssize_t result = write(destination_file, buffer + bytes_written, bytes_read - bytes_written);
+			if (result == -1) {
+				Log(LOG_LEVEL_ERROR, "Failed to write to the destination file %s (%s).", destination_path, strerror(errno));
+				close(source_file);
+				close(destination_file);
+				return FAILURE;
+			}
+
+			bytes_written += result;
+		}
+	}
+
+	if (bytes_read == -1) {
+		Log(LOG_LEVEL_ERROR, "Failed to read from the source file %s (%s).", source_path, strerror(errno));
+		close(source_file);
+		close(destination_file);
+		return FAILURE;
+	}
+
+	// Close the files
+	close(source_file);
+	close(destination_file);
+
+	return SUCCESS;
+}

src/utils.h

@@ -28,3 +28,5 @@ Status ReadFileDescriptor(int fd, char** _content);
 Status WriteFileDescriptor(int fd, const char* content);
 Status ReadFile(const char* path, char** _content);
 Status WriteFile(const char* path, const char* content);
+
+Status CopyFile(const char* source_path, const char* destination_path);