Interface ConfigurableFilePermissions

  • All Superinterfaces:
    FilePermissions

    public interface ConfigurableFilePermissions
    extends FilePermissions
    Provides the means of specifying file and directory access permissions for all classes of system users.

    For details on classes of users and file/directory permissions see FilePermissions.

    An example usage of this functionality would be configuring a copy task and explicitly specifying the destination file permissions:

     from(...)
     into(...)
     filePermissions {
         user {
             read = true
             execute = true
         }
         other.execute = false
     }
     
    Since:
    8.3
    • Method Detail

      • group

        void group​(Action<? super ConfigurableUserClassFilePermissions> configureAction)
        Modifies the permissions a user, who is a member of the group that the file/directory belongs to, has for the file/directory.

        For further details on permissions see ConfigurableUserClassFilePermissions.

        Note that the provided configuration action only applies incremental modifications on top of whatever permission the user has at the moment and that the default values permissions start out are different for files and directories (see UserClassFilePermissions).

      • other

        void other​(Action<? super ConfigurableUserClassFilePermissions> configureAction)
        Modifies the permissions all other users (non-owner, non-group) have for the file/directory.

        For further details on permissions see ConfigurableUserClassFilePermissions.

        Note that the provided configuration action only applies incremental modifications on top of whatever permission the user has at the moment and that the default values permissions start out are different for files and directories (see UserClassFilePermissions).

      • unix

        void unix​(java.lang.String unixNumericOrSymbolic)
        Sets Unix style permissions. Accept values in two styles of notation:
        • NUMERIC notation: uses 3 octal (base-8) digits representing permissions for the 3 categories of users; for example "755"
        • SYMBOLIC notation: uses 3 sets of 3 characters, each set representing the permissions for one of the user categories; for example "rwxr-xr-x"

        The NUMERIC notation consist of 3 digits having values from 0 to 7. 1st digit represents the OWNER, 2nd represents the GROUP while the 3rd represents OTHER users.

        Each of the digits is the sum of its component bits in the binary numeral system. Each of the 3 bits represents a permission. 1st bit is the READ bit, adds 4 to the digit (binary 100). 2nd bit is the WRITE bit, adds 2 to the digit (binary 010). 3rd bit is the EXECUTE bit, adds 1 to the digit (binary 001).

        See the examples below.

        NOTE: providing the 3 numeric digits can also be done in the octal literal form, so "0740" will be handled identically to "740".

        The SYMBOLIC notation consists of 3 sets of 3 characters. The 1st set represents the OWNER, the 2nd set represents the GROUP, the 3rd set represents OTHER users.

        Each of the tree characters represents the read, write and execute permissions:

        • r if READING is permitted, - if it is not; must be 1st in the set
        • w if WRITING is permitted, - if it is not; must be 2nd in the set
        • x if EXECUTING is permitted, - if it is not; must be 3rd in the set
        Examples of Unix style permissions
        Numeric Symbolic Meaning
        000 --------- no permissions
        700 rwx------ read, write & execute only for owner
        770 rwxrwx--- read, write & execute for owner and group
        111 --x--x--x execute
        222 -w--w--w- write
        333 -wx-wx-wx write & execute
        444 r--r--r-- read
        555 r-xr-xr-x read & execute
        666 rw-rw-rw- read & write
        740 rwxr----- owner can read, write & execute; group can only read; others have no permissions

        An example usage of this method would be configuring a copy task and explicitly specifying the destination file permissions:

         from(...)
         into(...)
         filePermissions { unix("r--r--r--") }
         
      • unix

        void unix​(int unixNumeric)
        Sets Unix style numeric permissions. See unix(String) for details.

        As described there, the value is expected to come from the range of 3 digit octal numbers, i.e. from 0 (included) to 512 (excluded).

        When represented in octal form, the numbers have the same meaning as their string counterparts (see unix(String)), so the following statements are all equivalent:

           unix("0740")         // octal number as string
           unix("740")          // octal number as string (no prefix)
           unix(0740)           // octal int literal
           unix(482)            // decimal int literal
           unix("rwxr-----")    // non-numeric string