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Chapter 4. File System Security > UFS and NFSv4 Mount Options

4.4. UFS and NFSv4 Mount Options

In the Solaris OS, you mount local files over UFS and remote files over NFS. The most recent version of NFS is NFSv4. The Solaris OS provides four options that affect the security of a mounted file system.

  • nosuid Disallows setuid and setgid execution.

  • noexec Disallows execution of programs in the file system. Also disallows mmap(2) with PROT_EXEC of files within the file system.

  • nodevices Disallows opening of device special files.

  • noxattr Disallows the creation and manipulation of extended attributes.


  

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