Method for controlling file access in operation system according to user's action history
An operating system and control file technology, applied in the direction of electronic digital data processing, instrument, platform integrity maintenance, etc., can solve the problems of reducing system security, not examining user behavior history, not considering, etc., to improve security, Effect of preventing malicious users from inappropriately accessing target files via the network
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Embodiment 1
[0045] Embodiment 1, the implementation in the Linux operating system
[0046] The Linux operating system supports many different file systems, but there is not much difference in terms of the implementation of the ACL mechanism, so the following uses ext2 as an example to illustrate the implementation of this method.
[0047] 1. Expansion of ACL:
[0048] In the 2.6.14 version of the Linux code, the data structure of ACE is defined as: struct posix_acl_entry {short e_tag; unsigned short e_perm; unsigned int e_id;};
[0049] The e_tag here is the attribute of ACE; e_id is the ID of the visitor in a certain aspect, that is, the value of a certain attribute, for example, when the attribute is "user", this is the user ID; e_perm is the bitmap of the allowed access rights.
[0050] The ACL is basically an ACE array, that is, an array of posix_acl_entry structures: struct posix_acl{atomic_t a_refcount; unsigned int a_count; struct posix_acl_entry a_entries[0];};
[0051] The stru...
Embodiment 2
[0121] Embodiment two, the implementation in Windows operating system
[0122] The method of the present invention is also applicable to Windows, and the above-mentioned Linux embodiment can be referred to in implementation.
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