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ACL_CALC_MASK(3)	 BSD Library Functions Manual	      ACL_CALC_MASK(3)

NAME
     acl_calc_mask -- calculate	and set	ACL mask permissions

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <sys/types.h>
     #include <sys/acl.h>

     int
     acl_calc_mask(acl_t *acl_p);

DESCRIPTION
     The acl_calc_mask() function is a POSIX.1e	call that calculates and set
     the permissions associated	with the ACL_MASK ACL entry of the ACL re-
     ferred to by acl_p.

     The value of new permissions are the union	of the permissions granted by
     the ACL_GROUP, ACL_GROUP_OBJ, ACL_USER tag	types which match processes in
     the file group class contained in the ACL referred	to by acl_p.

     If	the ACL	referred to by acl_p already contains an ACL_MASK entry, its
     permissions shall be overwritten; if it does not contain an ACL_MASK en-
     try, one shall be added.

RETURN VALUES
     The acl_calc_mask() function returns the value 0 if successful; otherwise
     the value -1 is returned and the global variable errno is set to indicate
     the error.

ERRORS
     The acl_calc_mask() function fails	if:

     [EINVAL]		Argument acl_p does not	point to a pointer to a	valid
			ACL.

SEE ALSO
     acl(3), acl_get_entry(3), acl_valid(3), posix1e(3)

STANDARDS
     POSIX.1e is described in IEEE POSIX.1e draft 17.

HISTORY
     POSIX.1e support was introduced in	FreeBSD	4.0.  The acl_calc_mask()
     function was added	in FreeBSD 5.0.

AUTHORS
     The acl_calc_mask() function was written by Chris D. Faulhaber
     <jedgar@fxp.org>.

BSD				March 10, 2001				   BSD
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY | AUTHORS

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