acl_maximal_permset_mask_np(3) [mojave man page]

ACL_PERMSET_MASK(3)					   BSD Library Functions Manual 				       ACL_PERMSET_MASK(3)

NAME

     acl_permset_mask -- Manipulate ACL permissions using bitmasks

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

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

     int
     acl_maximal_permset_mask_np(acl_permset_mask_t * mask_p);

     int
     acl_get_permset_mask_np(acl_entry_t entry_d, acl_permset_mask_t * mask_p);

     int
     acl_set_permset_mask_np(acl_entry_t entry_d, acl_permset_mask_t mask);

DESCRIPTION

     The acl_permset_mask_t functions are a Darwin extension to the POSIX.1e ACL standard which allow manipulation of permissions in an
     acl_entry_t using a bitmask of type acl_permset_mask_t rather than a constructed acl_permset_t (as done by acl_get_permset(3) and
     acl_set_permset(3)).

     acl_permset_mask_t values may be constructed using bitwise operations over acl_perm_t values.

     acl_maximal_permset_mask_np() sets the value pointed to by mask_p to a bitmask of all valid acl_perm_t values.

     acl_get_permset_mask_np() returns via mask_p a bitmask of permissions set on the ACL entry entry_d.

     acl_set_permset_mask_np() sets the permissions of ACL entry entry_d to match the permission bitmask provided by mask.

RETURN VALUES

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

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

     The acl_set_permset_mask_np() 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_get_permset_mask_np() function fails if:

     [EINVAL]		Argument entry_d is not a valid descriptor for an ACL entry.

     The acl_set_permset_mask_np() function fails if:

     [EINVAL]		Argument entry_d is not a valid descriptor for an ACL entry.

     [EINVAL]		Argument mask is not a valid bitmask of ACL permissions.

SEE ALSO

     acl(3), acl_add_perm(3), acl_clear_perms(3), acl_delete_perm(3), acl_get_permset(3), acl_set_permset(3), posix1e(3)

AUTHORS

     Jeremy Huddleston

Darwin								  August 24, 2010							    Darwin

ACL_GET_QUALIFIER(3)					   BSD Library Functions Manual 				      ACL_GET_QUALIFIER(3)

NAME

     acl_get_qualifier -- retrieve the qualifier from an ACL entry

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

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

     void *
     acl_get_qualifier(acl_entry_t entry_d);

DESCRIPTION

     The acl_get_qualifier() function is a POSIX.1e call that retrieves the qualifier of the tag for the ACL entry indicated by the argument
     entry_d into working storage and returns a pointer to that storage.

     If the value of the tag type in the ACL entry referred to by entry_d is ACL_USER, then the value returned by acl_get_qualifier() will be a
     pointer to type uid_t.

     If the value of the tag type in the ACL entry referred to by entry_d is ACL_GROUP, then the value returned by acl_get_qualifier() will be a
     pointer to type gid_t.

     If the value of the tag type in the ACL entry referred to by entry_d is ACL_UNDEFINED_TAG, ACL_USER_OBJ, ACL_GROUP_OBJ, ACL_OTHER, ACL_MASK,
     or an implementation-defined value for which a qualifier is not supported, then acl_get_qualifier() will return a value of (void *)NULL and
     the function will fail.

     This function may cause memory to be allocated.  The caller should free any releasable memory, when the new qualifier is no longer required,
     by calling acl_free() with void * as the argument.

RETURN VALUES

     The acl_get_qualifier() function returns a pointer to the allocated storage if successful; otherwise a NULL pointer is returned and the
     global variable errno is set to indicate the error.

ERRORS

     The acl_get_qualifier() fails if:

     [EINVAL]		Argument entry_d does not point to a valid descriptor for an ACL entry.  The value of the tag type in the ACL entry refer-
			enced by argument entry_d is not ACL_USER or ACL_GROUP.

     [ENOMEM]		The value to be returned requires more memory than is allowed by the hardware or system-imposed memory management con-
			straints.

SEE ALSO

     acl(3), acl_create_entry(3), acl_free(3), acl_get_entry(3), acl_get_tag_type(3), acl_set_qualifier(3), acl_set_tag_type(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_get_qualifier() function was added in FreeBSD 5.0.

AUTHORS

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

BSD
								  March 13, 2001							       BSD