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src/rollback.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "rollback.h"
+#include "utils.h"
+
+// 定义备份文件路径
+#define BACKUP_FILE "backup_system_state.dat"
+#define SYSTEM_STATE_FILE "system_state.dat"
+
+// 模拟从备份文件恢复系统状态
+int restore_backup() {
+    FILE *backup = fopen(BACKUP_FILE, "rb");
+    FILE *system_state = fopen(SYSTEM_STATE_FILE, "wb");
+
+    if (backup == NULL || system_state == NULL) {
+        log_message("Error opening backup or system state file.");
+        if (backup != NULL) fclose(backup);
+        if (system_state != NULL) fclose(system_state);
+        return 0;
+    }
+
+    char buffer[1024];
+    size_t bytes;
+    while ((bytes = fread(buffer, 1, sizeof(buffer), backup)) > 0) {
+        fwrite(buffer, 1, bytes, system_state);
+    }
+
+    fclose(backup);
+    fclose(system_state);
+    return 1;
+}
+
+// 检查系统状态是否有效
+int check_system_state() {
+    // 在这里添加具体的系统状态检查逻辑
+    // 例如，检查文件是否存在，配置是否正确等
+
+    FILE *system_state = fopen(SYSTEM_STATE_FILE, "r");
+    if (system_state == NULL) {
+        log_message("System state file not found.");
+        return 0;
+    }
+    fclose(system_state);
+    return 1;
+}
+
+int rollback_system() {
+    log_message("Starting system rollback...");
+
+    if (!check_system_state()) {
+        log_message("Current system state is invalid. Attempting to restore from backup...");
+        if (restore_backup()) {
+            log_message("System state restored from backup.");
+        } else {
+            log_message("Failed to restore system state from backup.");
+            return 0;
+        }
+    }
+
+    // 在这里添加其他回滚步骤，例如重启服务、恢复配置等
+    log_message("Performing additional rollback steps...");
+
+    // 模拟回滚过程
+    int success = 1; // 1 表示成功，0 表示失败
+
+    if (success) {
+        log_message("System rollback completed.");
+        return 1;
+    } else {
+        log_message("System rollback failed.");
+        return 0;
+    }
+}