63000aa1e6
Submitted by: Mitchell Horne MFC with: r332396 Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D15060
294 lines
8.2 KiB
C
294 lines
8.2 KiB
C
/*-
|
|
* 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 <sys/types.h>
|
|
#include <sys/acl.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
|
|
#include "setfacl.h"
|
|
|
|
static int merge_user_group(acl_entry_t *entry, acl_entry_t *entry_new,
|
|
int acl_brand);
|
|
|
|
static int
|
|
merge_user_group(acl_entry_t *entry, acl_entry_t *entry_new, int acl_brand)
|
|
{
|
|
acl_permset_t permset;
|
|
acl_entry_type_t entry_type;
|
|
acl_flagset_t flagset;
|
|
int have_entry;
|
|
uid_t *id, *id_new;
|
|
|
|
have_entry = 0;
|
|
|
|
id = acl_get_qualifier(*entry);
|
|
if (id == NULL)
|
|
err(1, "acl_get_qualifier() failed");
|
|
id_new = acl_get_qualifier(*entry_new);
|
|
if (id_new == NULL)
|
|
err(1, "acl_get_qualifier() failed");
|
|
if (*id == *id_new) {
|
|
/* any other matches */
|
|
if (acl_get_permset(*entry, &permset) == -1)
|
|
err(1, "acl_get_permset() failed");
|
|
if (acl_set_permset(*entry_new, permset) == -1)
|
|
err(1, "acl_set_permset() failed");
|
|
|
|
if (acl_brand == ACL_BRAND_NFS4) {
|
|
if (acl_get_entry_type_np(*entry, &entry_type))
|
|
err(1, "acl_get_entry_type_np() failed");
|
|
if (acl_set_entry_type_np(*entry_new, entry_type))
|
|
err(1, "acl_set_entry_type_np() failed");
|
|
if (acl_get_flagset_np(*entry, &flagset))
|
|
err(1, "acl_get_flagset_np() failed");
|
|
if (acl_set_flagset_np(*entry_new, flagset))
|
|
err(1, "acl_set_flagset_np() failed");
|
|
}
|
|
|
|
have_entry = 1;
|
|
}
|
|
acl_free(id);
|
|
acl_free(id_new);
|
|
|
|
return (have_entry);
|
|
}
|
|
|
|
/*
|
|
* merge an ACL into existing file's ACL
|
|
*/
|
|
int
|
|
merge_acl(acl_t acl, acl_t *prev_acl, const char *filename)
|
|
{
|
|
acl_entry_t entry, entry_new;
|
|
acl_permset_t permset;
|
|
acl_t acl_new;
|
|
acl_tag_t tag, tag_new;
|
|
acl_entry_type_t entry_type, entry_type_new;
|
|
acl_flagset_t flagset;
|
|
int entry_id, entry_id_new, have_entry, had_entry, entry_number = 0;
|
|
int acl_brand, prev_acl_brand;
|
|
|
|
acl_get_brand_np(acl, &acl_brand);
|
|
acl_get_brand_np(*prev_acl, &prev_acl_brand);
|
|
|
|
if (branding_mismatch(acl_brand, prev_acl_brand)) {
|
|
warnx("%s: branding mismatch; existing ACL is %s, "
|
|
"entry to be merged is %s", filename,
|
|
brand_name(prev_acl_brand), brand_name(acl_brand));
|
|
return (-1);
|
|
}
|
|
|
|
acl_new = acl_dup(*prev_acl);
|
|
if (acl_new == NULL)
|
|
err(1, "%s: acl_dup() failed", filename);
|
|
|
|
entry_id = ACL_FIRST_ENTRY;
|
|
|
|
while (acl_get_entry(acl, entry_id, &entry) == 1) {
|
|
entry_id = ACL_NEXT_ENTRY;
|
|
have_entry = 0;
|
|
had_entry = 0;
|
|
|
|
/* keep track of existing ACL_MASK entries */
|
|
if (acl_get_tag_type(entry, &tag) == -1)
|
|
err(1, "%s: acl_get_tag_type() failed - "
|
|
"invalid ACL entry", filename);
|
|
if (tag == ACL_MASK)
|
|
have_mask = true;
|
|
|
|
/* check against the existing ACL entries */
|
|
entry_id_new = ACL_FIRST_ENTRY;
|
|
while (acl_get_entry(acl_new, entry_id_new, &entry_new) == 1) {
|
|
entry_id_new = ACL_NEXT_ENTRY;
|
|
|
|
if (acl_get_tag_type(entry, &tag) == -1)
|
|
err(1, "%s: acl_get_tag_type() failed",
|
|
filename);
|
|
if (acl_get_tag_type(entry_new, &tag_new) == -1)
|
|
err(1, "%s: acl_get_tag_type() failed",
|
|
filename);
|
|
if (tag != tag_new)
|
|
continue;
|
|
|
|
/*
|
|
* For NFSv4, in addition to "tag" and "id" we also
|
|
* compare "entry_type".
|
|
*/
|
|
if (acl_brand == ACL_BRAND_NFS4) {
|
|
if (acl_get_entry_type_np(entry, &entry_type))
|
|
err(1, "%s: acl_get_entry_type_np() "
|
|
"failed", filename);
|
|
if (acl_get_entry_type_np(entry_new, &entry_type_new))
|
|
err(1, "%s: acl_get_entry_type_np() "
|
|
"failed", filename);
|
|
if (entry_type != entry_type_new)
|
|
continue;
|
|
}
|
|
|
|
switch(tag) {
|
|
case ACL_USER:
|
|
case ACL_GROUP:
|
|
have_entry = merge_user_group(&entry,
|
|
&entry_new, acl_brand);
|
|
if (have_entry == 0)
|
|
break;
|
|
/* FALLTHROUGH */
|
|
case ACL_USER_OBJ:
|
|
case ACL_GROUP_OBJ:
|
|
case ACL_OTHER:
|
|
case ACL_MASK:
|
|
case ACL_EVERYONE:
|
|
if (acl_get_permset(entry, &permset) == -1)
|
|
err(1, "%s: acl_get_permset() failed",
|
|
filename);
|
|
if (acl_set_permset(entry_new, permset) == -1)
|
|
err(1, "%s: acl_set_permset() failed",
|
|
filename);
|
|
|
|
if (acl_brand == ACL_BRAND_NFS4) {
|
|
if (acl_get_entry_type_np(entry, &entry_type))
|
|
err(1, "%s: acl_get_entry_type_np() failed",
|
|
filename);
|
|
if (acl_set_entry_type_np(entry_new, entry_type))
|
|
err(1, "%s: acl_set_entry_type_np() failed",
|
|
filename);
|
|
if (acl_get_flagset_np(entry, &flagset))
|
|
err(1, "%s: acl_get_flagset_np() failed",
|
|
filename);
|
|
if (acl_set_flagset_np(entry_new, flagset))
|
|
err(1, "%s: acl_set_flagset_np() failed",
|
|
filename);
|
|
}
|
|
had_entry = have_entry = 1;
|
|
break;
|
|
default:
|
|
/* should never be here */
|
|
errx(1, "%s: invalid tag type: %i", filename, tag);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* if this entry has not been found, it must be new */
|
|
if (had_entry == 0) {
|
|
|
|
/*
|
|
* NFSv4 ACL entries must be prepended to the ACL.
|
|
* Appending them at the end makes no sense, since
|
|
* in most cases they wouldn't even get evaluated.
|
|
*/
|
|
if (acl_brand == ACL_BRAND_NFS4) {
|
|
if (acl_create_entry_np(&acl_new, &entry_new, entry_number) == -1) {
|
|
warn("%s: acl_create_entry_np() failed", filename);
|
|
acl_free(acl_new);
|
|
return (-1);
|
|
}
|
|
/*
|
|
* Without this increment, adding several
|
|
* entries at once, for example
|
|
* "setfacl -m user:1:r:allow,user:2:r:allow",
|
|
* would make them appear in reverse order.
|
|
*/
|
|
entry_number++;
|
|
} else {
|
|
if (acl_create_entry(&acl_new, &entry_new) == -1) {
|
|
warn("%s: acl_create_entry() failed", filename);
|
|
acl_free(acl_new);
|
|
return (-1);
|
|
}
|
|
}
|
|
if (acl_copy_entry(entry_new, entry) == -1)
|
|
err(1, "%s: acl_copy_entry() failed", filename);
|
|
}
|
|
}
|
|
|
|
acl_free(*prev_acl);
|
|
*prev_acl = acl_new;
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
add_acl(acl_t acl, uint entry_number, acl_t *prev_acl, const char *filename)
|
|
{
|
|
acl_entry_t entry, entry_new;
|
|
acl_t acl_new;
|
|
int entry_id, acl_brand, prev_acl_brand;
|
|
|
|
acl_get_brand_np(acl, &acl_brand);
|
|
acl_get_brand_np(*prev_acl, &prev_acl_brand);
|
|
|
|
if (prev_acl_brand != ACL_BRAND_NFS4) {
|
|
warnx("%s: the '-a' option is only applicable to NFSv4 ACLs",
|
|
filename);
|
|
return (-1);
|
|
}
|
|
|
|
if (branding_mismatch(acl_brand, ACL_BRAND_NFS4)) {
|
|
warnx("%s: branding mismatch; existing ACL is NFSv4, "
|
|
"entry to be added is %s", filename,
|
|
brand_name(acl_brand));
|
|
return (-1);
|
|
}
|
|
|
|
acl_new = acl_dup(*prev_acl);
|
|
if (acl_new == NULL)
|
|
err(1, "%s: acl_dup() failed", filename);
|
|
|
|
entry_id = ACL_FIRST_ENTRY;
|
|
|
|
while (acl_get_entry(acl, entry_id, &entry) == 1) {
|
|
entry_id = ACL_NEXT_ENTRY;
|
|
|
|
if (acl_create_entry_np(&acl_new, &entry_new, entry_number) == -1) {
|
|
warn("%s: acl_create_entry_np() failed", filename);
|
|
acl_free(acl_new);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Without this increment, adding several
|
|
* entries at once, for example
|
|
* "setfacl -m user:1:r:allow,user:2:r:allow",
|
|
* would make them appear in reverse order.
|
|
*/
|
|
entry_number++;
|
|
|
|
if (acl_copy_entry(entry_new, entry) == -1)
|
|
err(1, "%s: acl_copy_entry() failed", filename);
|
|
}
|
|
|
|
acl_free(*prev_acl);
|
|
*prev_acl = acl_new;
|
|
|
|
return (0);
|
|
}
|