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📄 Makefile.inc(2.82 KB)
📄 Symbol.map(1.39 KB)
📄 acl.3(9.51 KB)
📄 acl_add_flag_np.3(2.91 KB)
📄 acl_add_perm.3(4.12 KB)
📄 acl_branding.c(3.9 KB)
📄 acl_calc_mask.3(2.7 KB)
📄 acl_calc_mask.c(3.71 KB)
📄 acl_clear_flags_np.3(2.35 KB)
📄 acl_clear_perms.3(2.33 KB)
📄 acl_compat.c(2.24 KB)
📄 acl_copy.c(2.4 KB)
📄 acl_copy_entry.3(2.35 KB)
📄 acl_create_entry.3(2.83 KB)
📄 acl_delete.3(4.28 KB)
📄 acl_delete.c(2.33 KB)
📄 acl_delete_entry.3(2.73 KB)
📄 acl_delete_entry.c(4.25 KB)
📄 acl_delete_flag_np.3(2.43 KB)
📄 acl_delete_perm.3(2.42 KB)
📄 acl_dup.3(3.19 KB)
📄 acl_entry.c(3.58 KB)
📄 acl_flag.c(3.08 KB)
📄 acl_free.3(2.61 KB)
📄 acl_free.c(1.83 KB)
📄 acl_from_text.3(3.69 KB)
📄 acl_from_text.c(6.9 KB)
📄 acl_from_text_nfs4.c(6.53 KB)
📄 acl_get.3(4.81 KB)
📄 acl_get.c(5.01 KB)
📄 acl_get_brand_np.3(2.69 KB)
📄 acl_get_entry.3(3.62 KB)
📄 acl_get_entry_type_np.3(2.49 KB)
📄 acl_get_flag_np.3(2.63 KB)
📄 acl_get_flagset_np.3(2.51 KB)
📄 acl_get_perm_np.3(2.65 KB)
📄 acl_get_permset.3(2.49 KB)
📄 acl_get_qualifier.3(3.79 KB)
📄 acl_get_tag_type.3(2.53 KB)
📄 acl_id_to_name.c(2.91 KB)
📄 acl_init.3(3.31 KB)
📄 acl_init.c(2.64 KB)
📄 acl_is_trivial_np.3(2.84 KB)
📄 acl_perm.c(2.88 KB)
📄 acl_set.3(4.53 KB)
📄 acl_set.c(5.67 KB)
📄 acl_set_entry_type_np.3(2.81 KB)
📄 acl_set_flagset_np.3(2.51 KB)
📄 acl_set_permset.3(2.38 KB)
📄 acl_set_qualifier.3(2.61 KB)
📄 acl_set_tag_type.3(3.08 KB)
📄 acl_strip.c(5.17 KB)
📄 acl_strip_np.3(3.18 KB)
📄 acl_support.c(9.9 KB)
📄 acl_support.h(3.14 KB)
📄 acl_support_nfs4.c(6.48 KB)
📄 acl_to_text.3(4.64 KB)
📄 acl_to_text.c(6.73 KB)
📄 acl_to_text_nfs4.c(5.91 KB)
📄 acl_valid.3(4.96 KB)
📄 acl_valid.c(3.38 KB)
📄 extattr.3(3.34 KB)
📄 extattr.c(2.38 KB)
📄 mac.3(5.67 KB)
📄 mac.c(9.21 KB)
📄 mac.conf(507 B)
📄 mac.conf.5(3.99 KB)
📄 mac_exec.c(1.96 KB)
📄 mac_free.3(3.06 KB)
📄 mac_get.3(4.48 KB)
📄 mac_get.c(2.6 KB)
📄 mac_is_present.3(2.83 KB)
📄 mac_prepare.3(3.96 KB)
📄 mac_set.3(4.04 KB)
📄 mac_set.c(2.29 KB)
📄 mac_text.3(3.33 KB)
📄 posix1e.3(3.53 KB)

Editing: acl_strip.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2001 Chris D. Faulhaber
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <errno.h>
#include <stdio.h>
#include <assert.h>
#include <sys/acl.h>
#include <sys/stat.h>

#include "acl_support.h"

/*
 * These routines from sys/kern/subr_acl_nfs4.c are used by both kernel
 * and libc.
 */
void	acl_nfs4_sync_mode_from_acl(mode_t *_mode, const struct acl *aclp);
void	acl_nfs4_trivial_from_mode_libc(struct acl *aclp, int file_owner_id,
	    int canonical_six);

static acl_t
_nfs4_acl_strip_np(const acl_t aclp, int canonical_six)
{
	acl_t newacl;
	mode_t mode = 0;

newacl = acl_init(ACL_MAX_ENTRIES);
	if (newacl == NULL) {
		errno = ENOMEM;
		return (NULL);
	}

_acl_brand_as(newacl, ACL_BRAND_NFS4);

acl_nfs4_sync_mode_from_acl(&mode, &(aclp->ats_acl));
	acl_nfs4_trivial_from_mode_libc(&(newacl->ats_acl), mode, canonical_six);

return (newacl);
}

static acl_t
_posix1e_acl_strip_np(const acl_t aclp, int recalculate_mask)
{
	acl_t acl_new, acl_old;
	acl_entry_t entry, entry_new;
	acl_tag_t tag;
	int entry_id, have_mask_entry;

assert(_acl_brand(aclp) == ACL_BRAND_POSIX);

acl_old = acl_dup(aclp);
	if (acl_old == NULL)
		return (NULL);

assert(_acl_brand(acl_old) == ACL_BRAND_POSIX);

have_mask_entry = 0;
	acl_new = acl_init(ACL_MAX_ENTRIES);
	if (acl_new == NULL) {
		acl_free(acl_old);
		return (NULL);
	}
	tag = ACL_UNDEFINED_TAG;

/* only save the default user/group/other entries */
	entry_id = ACL_FIRST_ENTRY;
	while (acl_get_entry(acl_old, entry_id, &entry) == 1) {
		entry_id = ACL_NEXT_ENTRY;

assert(_entry_brand(entry) == ACL_BRAND_POSIX);

if (acl_get_tag_type(entry, &tag) == -1)
			goto fail;

switch(tag) {
		case ACL_USER_OBJ:
		case ACL_GROUP_OBJ:
		case ACL_OTHER:
			if (acl_create_entry(&acl_new, &entry_new) == -1)
				goto fail;
			if (acl_copy_entry(entry_new, entry) == -1)
				goto fail;
			assert(_entry_brand(entry_new) == ACL_BRAND_POSIX);
			break;
		case ACL_MASK:
			have_mask_entry = 1;
			break;
		default:
			break;
		}
	}

assert(_acl_brand(acl_new) == ACL_BRAND_POSIX);

if (have_mask_entry && recalculate_mask) {
		if (acl_calc_mask(&acl_new) == -1)
			goto fail;
	}

return (acl_new);

fail:
	acl_free(acl_new);
	acl_free(acl_old);

return (NULL);
}

acl_t
acl_strip_np(const acl_t aclp, int recalculate_mask)
{
	switch (_acl_brand(aclp)) {
	case ACL_BRAND_NFS4:
		return (_nfs4_acl_strip_np(aclp, 0));

case ACL_BRAND_POSIX:
		return (_posix1e_acl_strip_np(aclp, recalculate_mask));

default:
		errno = EINVAL;
		return (NULL);
	}
}

/*
 * Return 1, if ACL is trivial, 0 otherwise.
 *
 * ACL is trivial, iff its meaning could be fully expressed using just file
 * mode.  In other words, ACL is trivial iff it doesn't have "+" to the right
 * of the mode bits in "ls -l" output ;-)
 */
int
acl_is_trivial_np(const acl_t aclp, int *trivialp)
{
	acl_t tmpacl;
	int differs;

if (aclp == NULL || trivialp == NULL) {
		errno = EINVAL;
		return (-1);
	}

switch (_acl_brand(aclp)) {
	case ACL_BRAND_POSIX:
		if (aclp->ats_acl.acl_cnt == 3)
			*trivialp = 1;
		else
			*trivialp = 0;

return (0);

case ACL_BRAND_NFS4:
		/*
		 * If the ACL has more than canonical six entries,
		 * it's non trivial by definition.
		 */
		if (aclp->ats_acl.acl_cnt > 6) {
			*trivialp = 0;
			return (0);
		}
			
		/*
		 * Calculate trivial ACL - using acl_strip_np(3) - and compare
		 * with the original.
		 */
		tmpacl = _nfs4_acl_strip_np(aclp, 0);
		if (tmpacl == NULL)
			return (-1);

differs = _acl_differs(aclp, tmpacl);
		acl_free(tmpacl);

if (differs == 0) {
			*trivialp = 1;
			return (0);
		}

/*
		 * Try again with an old-style, "canonical six" trivial ACL.
		 */
		tmpacl = _nfs4_acl_strip_np(aclp, 1);
		if (tmpacl == NULL)
			return (-1);

differs = _acl_differs(aclp, tmpacl);
		acl_free(tmpacl);

if (differs)
			*trivialp = 0;
		else
			*trivialp = 1;

return (0);

default:
		errno = EINVAL;
		return (-1);
	}
}

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Editing: acl_strip.c

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