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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_delete_entry.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 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 <sys/types.h>
#include "namespace.h"
#include <sys/acl.h>
#include "un-namespace.h"
#include <errno.h>
#include <string.h>
#include <stdio.h>

#include "acl_support.h"

static int
_entry_matches(const acl_entry_t a, const acl_entry_t b)
{
	/*
	 * There is a semantical difference here between NFSv4 and POSIX
	 * draft ACLs.  In POSIX, there may be only one entry for the particular
	 * user or group.  In NFSv4 ACL, there may be any number of them.  We're
	 * trying to be more specific here in that case.
	 */
	switch (_entry_brand(a)) {
	case ACL_BRAND_NFS4:
		if (a->ae_tag != b->ae_tag || a->ae_entry_type != b->ae_entry_type)
			return (0);

/* If ae_ids matter, compare them as well. */
		if (a->ae_tag == ACL_USER || a->ae_tag == ACL_GROUP) {
			if (a->ae_id != b->ae_id)
				return (0);
		}

return (1);

default:
		if ((a->ae_tag == b->ae_tag) && (a->ae_id == b->ae_id))
			return (1);
	}

return (0);
}

/*
 * acl_delete_entry() (23.4.9): remove the ACL entry indicated by entry_d
 * from acl.
 */
int
acl_delete_entry(acl_t acl, acl_entry_t entry_d)
{
	struct acl *acl_int;
	struct acl_entry entry_int;
	int i, j, found = 0;

if (acl == NULL || entry_d == NULL) {
		errno = EINVAL;
		return (-1);
	}

acl_int = &acl->ats_acl;

if (_entry_brand(entry_d) != _acl_brand(acl)) {
		errno = EINVAL;
		return (-1);
	}

if ((acl->ats_acl.acl_cnt < 1) ||
	    (acl->ats_acl.acl_cnt > ACL_MAX_ENTRIES)) {
		errno = EINVAL;
		return (-1);
	}

/* Use a local copy to prevent deletion of more than this entry */
	entry_int = *entry_d;

for (i = 0; i < acl->ats_acl.acl_cnt;) {
		if (_entry_matches(&(acl->ats_acl.acl_entry[i]), &entry_int)) {
			/* ...shift the remaining entries... */
			for (j = i; j < acl->ats_acl.acl_cnt - 1; ++j)
				acl->ats_acl.acl_entry[j] =
				    acl->ats_acl.acl_entry[j+1];
			/* ...drop the count and zero the unused entry... */
			acl->ats_acl.acl_cnt--;
			bzero(&acl->ats_acl.acl_entry[j],
			    sizeof(struct acl_entry));
			acl->ats_cur_entry = 0;
			
			/* Continue with the loop to remove all matching entries. */
			found = 1;
		} else
			i++;
	}

if (found)
		return (0);

errno = EINVAL;
	return (-1);
}

int
acl_delete_entry_np(acl_t acl, int offset)
{
	struct acl *acl_int;
	int i;

if (acl == NULL) {
		errno = EINVAL;
		return (-1);
	}

acl_int = &acl->ats_acl;

if (offset < 0 || offset >= acl_int->acl_cnt) {
		errno = EINVAL;
		return (-1);
	}

if ((acl->ats_acl.acl_cnt < 1) ||
	    (acl->ats_acl.acl_cnt > ACL_MAX_ENTRIES)) {
		errno = EINVAL;
		return (-1);
	}

/* ...shift the remaining entries... */
	for (i = offset; i < acl->ats_acl.acl_cnt - 1; ++i)
		acl->ats_acl.acl_entry[i] =
		    acl->ats_acl.acl_entry[i+1];
	/* ...drop the count and zero the unused entry... */
	acl->ats_acl.acl_cnt--;
	bzero(&acl->ats_acl.acl_entry[i],
	    sizeof(struct acl_entry));
	acl->ats_cur_entry = 0;

return (0);
}

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Editing: acl_delete_entry.c

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