Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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/*-
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2017-11-25 17:12:48 +00:00
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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* Copyright (c) 2008, 2009 Edward Tomasz Napierała <trasz@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <assert.h>
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#include <string.h>
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#include <pwd.h>
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#include <grp.h>
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#include <sys/syscall.h>
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#include <sys/types.h>
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#include <sys/acl.h>
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#include "acl_support.h"
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#define MAX_ENTRY_LENGTH 512
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static int
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format_who(char *str, size_t size, const acl_entry_t entry, int numeric)
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{
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int error;
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acl_tag_t tag;
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struct passwd *pwd;
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struct group *grp;
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2010-06-05 07:40:32 +00:00
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uid_t *id;
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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error = acl_get_tag_type(entry, &tag);
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if (error)
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return (error);
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switch (tag) {
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case ACL_USER_OBJ:
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snprintf(str, size, "owner@");
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break;
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case ACL_USER:
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2010-06-05 07:40:32 +00:00
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id = (uid_t *)acl_get_qualifier(entry);
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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if (id == NULL)
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return (-1);
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/* XXX: Thread-unsafe. */
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if (!numeric)
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pwd = getpwuid(*id);
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else
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pwd = NULL;
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if (pwd == NULL)
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snprintf(str, size, "user:%d", (unsigned int)*id);
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else
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snprintf(str, size, "user:%s", pwd->pw_name);
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break;
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case ACL_GROUP_OBJ:
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snprintf(str, size, "group@");
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break;
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case ACL_GROUP:
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2010-06-05 07:40:32 +00:00
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id = (uid_t *)acl_get_qualifier(entry);
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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if (id == NULL)
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return (-1);
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/* XXX: Thread-unsafe. */
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if (!numeric)
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grp = getgrgid(*id);
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else
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grp = NULL;
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if (grp == NULL)
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snprintf(str, size, "group:%d", (unsigned int)*id);
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else
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snprintf(str, size, "group:%s", grp->gr_name);
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break;
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case ACL_EVERYONE:
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snprintf(str, size, "everyone@");
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break;
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default:
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return (-1);
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}
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return (0);
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}
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static int
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format_entry_type(char *str, size_t size, const acl_entry_t entry)
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{
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int error;
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acl_entry_type_t entry_type;
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error = acl_get_entry_type_np(entry, &entry_type);
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if (error)
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return (error);
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switch (entry_type) {
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case ACL_ENTRY_TYPE_ALLOW:
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snprintf(str, size, "allow");
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break;
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case ACL_ENTRY_TYPE_DENY:
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snprintf(str, size, "deny");
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break;
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case ACL_ENTRY_TYPE_AUDIT:
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snprintf(str, size, "audit");
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break;
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case ACL_ENTRY_TYPE_ALARM:
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snprintf(str, size, "alarm");
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break;
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default:
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return (-1);
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}
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return (0);
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}
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static int
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format_additional_id(char *str, size_t size, const acl_entry_t entry)
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{
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int error;
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acl_tag_t tag;
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2010-06-05 07:40:32 +00:00
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uid_t *id;
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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error = acl_get_tag_type(entry, &tag);
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if (error)
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return (error);
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switch (tag) {
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case ACL_USER_OBJ:
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case ACL_GROUP_OBJ:
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case ACL_EVERYONE:
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str[0] = '\0';
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break;
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default:
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2010-06-05 07:40:32 +00:00
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id = (uid_t *)acl_get_qualifier(entry);
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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if (id == NULL)
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return (-1);
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snprintf(str, size, ":%d", (unsigned int)*id);
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}
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return (0);
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}
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static int
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format_entry(char *str, size_t size, const acl_entry_t entry, int flags)
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{
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2010-03-28 17:29:15 +00:00
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size_t off = 0, min_who_field_length = 18;
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
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acl_permset_t permset;
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acl_flagset_t flagset;
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int error, len;
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char buf[MAX_ENTRY_LENGTH + 1];
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assert(_entry_brand(entry) == ACL_BRAND_NFS4);
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error = acl_get_flagset_np(entry, &flagset);
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if (error)
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return (error);
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error = acl_get_permset(entry, &permset);
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if (error)
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return (error);
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error = format_who(buf, sizeof(buf), entry,
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flags & ACL_TEXT_NUMERIC_IDS);
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if (error)
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return (error);
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len = strlen(buf);
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2010-03-28 17:29:15 +00:00
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if (len < min_who_field_length)
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len = min_who_field_length;
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off += snprintf(str + off, size - off, "%*s:", len, buf);
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
|
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error = _nfs4_format_access_mask(buf, sizeof(buf), *permset,
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flags & ACL_TEXT_VERBOSE);
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if (error)
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return (error);
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off += snprintf(str + off, size - off, "%s:", buf);
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error = _nfs4_format_flags(buf, sizeof(buf), *flagset,
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flags & ACL_TEXT_VERBOSE);
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if (error)
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return (error);
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off += snprintf(str + off, size - off, "%s:", buf);
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error = format_entry_type(buf, sizeof(buf), entry);
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if (error)
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return (error);
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off += snprintf(str + off, size - off, "%s", buf);
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if (flags & ACL_TEXT_APPEND_ID) {
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error = format_additional_id(buf, sizeof(buf), entry);
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if (error)
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return (error);
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off += snprintf(str + off, size - off, "%s", buf);
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}
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off += snprintf(str + off, size - off, "\n");
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/* Make sure we didn't truncate anything. */
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assert (off < size);
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return (0);
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}
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char *
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_nfs4_acl_to_text_np(const acl_t aclp, ssize_t *len_p, int flags)
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{
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int error, off = 0, size, entry_id = ACL_FIRST_ENTRY;
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char *str;
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acl_entry_t entry;
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if (aclp->ats_acl.acl_cnt == 0)
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return strdup("");
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size = aclp->ats_acl.acl_cnt * MAX_ENTRY_LENGTH;
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str = malloc(size);
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if (str == NULL)
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return (NULL);
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while (acl_get_entry(aclp, entry_id, &entry) == 1) {
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entry_id = ACL_NEXT_ENTRY;
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assert(off < size);
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error = format_entry(str + off, size - off, entry, flags);
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if (error) {
|
2010-06-03 14:51:29 +00:00
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free(str);
|
Add NFSv4 ACL support to libc.
This adds the following functions to the acl(3) API: acl_add_flag_np,
acl_clear_flags_np, acl_create_entry_np, acl_delete_entry_np,
acl_delete_flag_np, acl_get_extended_np, acl_get_flag_np, acl_get_flagset_np,
acl_set_extended_np, acl_set_flagset_np, acl_to_text_np, acl_is_trivial_np,
acl_strip_np, acl_get_brand_np. Most of them are similar to what Darwin
does. There are no backward-incompatible changes.
Approved by: rwatson@
2009-06-25 12:46:59 +00:00
|
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errno = EINVAL;
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return (NULL);
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}
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off = strlen(str);
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}
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assert(off < size);
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str[off] = '\0';
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if (len_p != NULL)
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*len_p = off;
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return (str);
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}
|