File Set Access {R}←X ⎕FSTAC Y

Access code 8192

Y must be a simple integer scalar or 1 or 2 element vector containing the file tie number followed by an optional passnumber. If the passnumber is omitted it is assumed to be zero.

X must be a valid access matrix, that is, a 3-column integer matrix with any number of rows. The function sets access control for a set of specific users (1^st column) and file operations (2^nd column) with specified passnumbers ( 3^rd column). Note that a 0 in the 1^st column specifies all users, a ¯1 in the 2^nd column specifies all file operations, and a 0 in the 3^rd column specifies that no passnumber is required. For further details, see File Access Control.

The shy result of ⎕FSTAC is the tie number of the file.

Examples

      'SALES' ⎕FCREATE 1
      (3 3⍴28 2105 16385 0 2073 16385 31 ¯1 0) ⎕FSTAC 1
      ((⎕FRDAC 1)⍪21 2105 16385) ⎕FSTAC 1

       (1 3⍴0 ¯1 0)⎕FSTAC 2 ⍝ Let everyone do anything