Operating system partition protecting system, protecting device, and terminal

A terminal, comprises:

• at least one processor;
• and
• a storage device storing a plurality of instructions, which when executed by the processor, causes the at least one processor to:
• create a virtual memory space when detecting that a user space file system is started, and mount the virtual memory space on a first directory, wherein the virtual memory space is a memory storage area in an operating system of the terminal, a writing operation executed in the virtual memory space is automatically wiped or cleared when the virtual memory space is restarted, or wherein the virtual memory space is a persistent storage region in the operating system, a writing operation executed in the virtual memory space is stored and is emptied reboot;
• mount a physical storage space of a system file in an actual storage operating system on a second directory that is private and hidden;
• create a user-state file system on a mounting point of an operating system partition to be protected, and control the user-state file system to monitor a request event for file system operation on the operating system partition to be protected;
• determine a target file corresponding to the request event, access the second directory to read a target file in the physical storage space, or access the first directory to carry out a writing operation on the target file into the virtual memory space, according to the request event and the target file.

A non-transitory computer-readable storage medium having stored thereon instructions that, when executed by at least one processor of a terminal, causing the processor to perform an operating system partition protecting method, the method comprising:

• creating a virtual memory space, and mounting the virtual memory space on a first directory, wherein the virtual memory space is a memory storage area in an operating system of the terminal, a writing operation executed in the virtual memory space is automatically wiped or cleared when the virtual memory space is restarted, or wherein the virtual memory space is a persistent storage region in the operating system, a writing operation executed in the virtual memory space is stored and is emptied reboot;
• mounting a physical storage space that actually stores a system file of an operating system on a second directory that is private and hidden;
• creating a user-state file system on a mounting point of an operating system partition to be protected, and controlling the user-state file system to monitor a request event of an operation on the file system in the operating system partition to be protected;
• determining a target file corresponding to the request event, accessing the second directory to read a target file in the physical storage space or accessing the first directory to carry out a writing operation on the target file into the virtual memory space according to the request event and the target file.