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Current Path: /usr/src/lib/libc/posix1e

📁 ..
📄 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_calc_mask.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2001-2002 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 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 <sys/types.h>
#include "namespace.h"
#include <sys/acl.h>
#include "un-namespace.h"

#include <errno.h>
#include <stdio.h>

#include "acl_support.h"

/*
 * acl_calc_mask() (23.4.2): calculate and set the permissions
 * associated with the ACL_MASK ACL entry.  If the ACL already
 * contains an ACL_MASK entry, its permissions shall be
 * overwritten; if not, one shall be added.
 */
int
acl_calc_mask(acl_t *acl_p)
{
	struct acl	*acl_int, *acl_int_new;
	acl_t		acl_new;
	int		i, mask_mode, mask_num;

/*
	 * (23.4.2.4) requires acl_p to point to a pointer to a valid ACL.
	 * Since one of the primary reasons to use this function would be
	 * to calculate the appropriate mask to obtain a valid ACL, we only
	 * perform sanity checks here and validate the ACL prior to
	 * returning.
	 */
	if (acl_p == NULL || *acl_p == NULL) {
		errno = EINVAL;
		return (-1);
	}

if (!_acl_brand_may_be(*acl_p, ACL_BRAND_POSIX)) {
		errno = EINVAL;
		return (-1);
	}
	_acl_brand_as(*acl_p, ACL_BRAND_POSIX);

acl_int = &(*acl_p)->ats_acl;
	if ((acl_int->acl_cnt < 3) || (acl_int->acl_cnt > ACL_MAX_ENTRIES)) {
		errno = EINVAL;
		return (-1);
	}

acl_new = acl_dup(*acl_p);
	if (acl_new == NULL)
		return (-1);
	acl_int_new = &acl_new->ats_acl;

mask_mode = 0;
	mask_num = -1;

/* gather permissions and find a mask entry */
	for (i = 0; i < acl_int_new->acl_cnt; i++) {
		switch(acl_int_new->acl_entry[i].ae_tag) {
		case ACL_USER:
		case ACL_GROUP:
		case ACL_GROUP_OBJ:
			mask_mode |=
			    acl_int_new->acl_entry[i].ae_perm & ACL_PERM_BITS;
			break;
		case ACL_MASK:
			mask_num = i;
			break;
		}
	}

/* if a mask entry already exists, overwrite the perms */
	if (mask_num != -1)
		acl_int_new->acl_entry[mask_num].ae_perm = mask_mode;
	else {
		/* if no mask exists, check acl_cnt... */
		if (acl_int_new->acl_cnt == ACL_MAX_ENTRIES) {
			errno = ENOMEM;
			acl_free(acl_new);
			return (-1);
		}
		/* ...and add the mask entry */
		acl_int_new->acl_entry[acl_int_new->acl_cnt].ae_tag = ACL_MASK;
		acl_int_new->acl_entry[acl_int_new->acl_cnt].ae_id =
		    ACL_UNDEFINED_ID;
		acl_int_new->acl_entry[acl_int_new->acl_cnt].ae_perm =
		    mask_mode;
		acl_int_new->acl_cnt++;
	}

if (acl_valid(acl_new) == -1) {
		errno = EINVAL;
		acl_free(acl_new);
		return (-1);
	}

**acl_p = *acl_new;
	acl_free(acl_new);

return (0);
}

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Editing: acl_calc_mask.c

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