diff options
Diffstat (limited to 'lib/libc/posix1e/acl_strip.c')
| -rw-r--r-- | lib/libc/posix1e/acl_strip.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/lib/libc/posix1e/acl_strip.c b/lib/libc/posix1e/acl_strip.c deleted file mode 100644 index c4065d6..0000000 --- a/lib/libc/posix1e/acl_strip.c +++ /dev/null @@ -1,229 +0,0 @@ -/*- - * 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 three routines from sys/kern/subr_acl_nfs4.c are used by both kernel - * and libc. - */ -void acl_nfs4_trivial_from_mode(struct acl *aclp, mode_t mode); -void acl_nfs4_sync_acl_from_mode(struct acl *aclp, mode_t mode, - int file_owner_id); -void acl_nfs4_sync_mode_from_acl(mode_t *_mode, const struct acl *aclp); - -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)); - if (canonical_six) - acl_nfs4_sync_acl_from_mode(&(newacl->ats_acl), mode, -1); - else - acl_nfs4_trivial_from_mode(&(newacl->ats_acl), mode); - - 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_permset_t perm; - 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) - 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) - return (NULL); - - switch(tag) { - case ACL_USER_OBJ: - case ACL_GROUP_OBJ: - case ACL_OTHER: - if (acl_get_tag_type(entry, &tag) == -1) - return (NULL); - if (acl_get_permset(entry, &perm) == -1) - return (NULL); - if (acl_create_entry(&acl_new, &entry_new) == -1) - return (NULL); - if (acl_set_tag_type(entry_new, tag) == -1) - return (NULL); - if (acl_set_permset(entry_new, perm) == -1) - return (NULL); - if (acl_copy_entry(entry_new, entry) == -1) - return (NULL); - 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) - return (NULL); - } - - return (acl_new); -} - -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, 1)); - - 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); - } -} |
