NAME
acl_calc_mask —
calculate and set ACL mask
permissions
LIBRARY
library “libc”
SYNOPSIS
#include
<sys/types.h>
#include <sys/acl.h>
int
acl_calc_mask(acl_t
*acl_p);
DESCRIPTION
Theacl_calc_mask()
function is a POSIX.1e call that calculates and set the permissions associated
with the ACL_MASK ACL entry of the ACL referred 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
entry, 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
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>.