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250 lines
7.9 KiB
250 lines
7.9 KiB
/*-
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* Copyright (c) 2003-2010 Tim Kientzle
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* All rights reserved.
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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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* in this position and unchanged.
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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(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD: head/lib/libarchive/archive_write_disk.c 201159 2009-12-29 05:35:40Z kientzle $");
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_ACL_H
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#define _ACL_PRIVATE /* For debugging */
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#include <sys/acl.h>
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#endif
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include "archive.h"
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#include "archive_entry.h"
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#include "archive_acl_private.h"
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#include "archive_write_disk_private.h"
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#if !defined(HAVE_POSIX_ACL) || !defined(ACL_TYPE_NFS4)
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/* Default empty function body to satisfy mainline code. */
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int
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archive_write_disk_set_acls(struct archive *a, int fd, const char *name,
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struct archive_acl *abstract_acl)
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{
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(void)a; /* UNUSED */
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(void)fd; /* UNUSED */
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(void)name; /* UNUSED */
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(void)abstract_acl; /* UNUSED */
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return (ARCHIVE_OK);
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}
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#else
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static int set_acl(struct archive *, int fd, const char *,
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struct archive_acl *,
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acl_type_t, int archive_entry_acl_type, const char *tn);
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/*
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* XXX TODO: What about ACL types other than ACCESS and DEFAULT?
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*/
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int
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archive_write_disk_set_acls(struct archive *a, int fd, const char *name,
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struct archive_acl *abstract_acl)
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{
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int ret;
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if (archive_acl_count(abstract_acl, ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) > 0) {
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ret = set_acl(a, fd, name, abstract_acl, ACL_TYPE_ACCESS,
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ARCHIVE_ENTRY_ACL_TYPE_ACCESS, "access");
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if (ret != ARCHIVE_OK)
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return (ret);
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ret = set_acl(a, fd, name, abstract_acl, ACL_TYPE_DEFAULT,
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ARCHIVE_ENTRY_ACL_TYPE_DEFAULT, "default");
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return (ret);
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} else if (archive_acl_count(abstract_acl, ARCHIVE_ENTRY_ACL_TYPE_NFS4) > 0) {
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ret = set_acl(a, fd, name, abstract_acl, ACL_TYPE_NFS4,
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ARCHIVE_ENTRY_ACL_TYPE_NFS4, "nfs4");
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return (ret);
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} else
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return ARCHIVE_OK;
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}
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static struct {
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int archive_perm;
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int platform_perm;
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} acl_perm_map[] = {
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{ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},
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{ARCHIVE_ENTRY_ACL_WRITE, ACL_WRITE},
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{ARCHIVE_ENTRY_ACL_READ, ACL_READ},
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{ARCHIVE_ENTRY_ACL_READ_DATA, ACL_READ_DATA},
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{ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, ACL_LIST_DIRECTORY},
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{ARCHIVE_ENTRY_ACL_WRITE_DATA, ACL_WRITE_DATA},
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{ARCHIVE_ENTRY_ACL_ADD_FILE, ACL_ADD_FILE},
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{ARCHIVE_ENTRY_ACL_APPEND_DATA, ACL_APPEND_DATA},
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{ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, ACL_ADD_SUBDIRECTORY},
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{ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, ACL_READ_NAMED_ATTRS},
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{ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, ACL_WRITE_NAMED_ATTRS},
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{ARCHIVE_ENTRY_ACL_DELETE_CHILD, ACL_DELETE_CHILD},
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{ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, ACL_READ_ATTRIBUTES},
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{ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, ACL_WRITE_ATTRIBUTES},
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{ARCHIVE_ENTRY_ACL_DELETE, ACL_DELETE},
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{ARCHIVE_ENTRY_ACL_READ_ACL, ACL_READ_ACL},
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{ARCHIVE_ENTRY_ACL_WRITE_ACL, ACL_WRITE_ACL},
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{ARCHIVE_ENTRY_ACL_WRITE_OWNER, ACL_WRITE_OWNER},
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{ARCHIVE_ENTRY_ACL_SYNCHRONIZE, ACL_SYNCHRONIZE}
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};
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static struct {
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int archive_inherit;
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int platform_inherit;
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} acl_inherit_map[] = {
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{ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, ACL_ENTRY_FILE_INHERIT},
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{ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, ACL_ENTRY_DIRECTORY_INHERIT},
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{ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, ACL_ENTRY_NO_PROPAGATE_INHERIT},
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{ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, ACL_ENTRY_INHERIT_ONLY}
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};
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static int
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set_acl(struct archive *a, int fd, const char *name,
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struct archive_acl *abstract_acl,
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acl_type_t acl_type, int ae_requested_type, const char *tname)
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{
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acl_t acl;
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acl_entry_t acl_entry;
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acl_permset_t acl_permset;
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acl_flagset_t acl_flagset;
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int ret;
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int ae_type, ae_permset, ae_tag, ae_id;
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uid_t ae_uid;
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gid_t ae_gid;
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const char *ae_name;
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int entries;
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int i;
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ret = ARCHIVE_OK;
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entries = archive_acl_reset(abstract_acl, ae_requested_type);
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if (entries == 0)
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return (ARCHIVE_OK);
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acl = acl_init(entries);
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while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type,
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&ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) {
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acl_create_entry(&acl, &acl_entry);
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switch (ae_tag) {
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case ARCHIVE_ENTRY_ACL_USER:
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acl_set_tag_type(acl_entry, ACL_USER);
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ae_uid = archive_write_disk_uid(a, ae_name, ae_id);
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acl_set_qualifier(acl_entry, &ae_uid);
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break;
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case ARCHIVE_ENTRY_ACL_GROUP:
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acl_set_tag_type(acl_entry, ACL_GROUP);
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ae_gid = archive_write_disk_gid(a, ae_name, ae_id);
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acl_set_qualifier(acl_entry, &ae_gid);
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break;
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case ARCHIVE_ENTRY_ACL_USER_OBJ:
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acl_set_tag_type(acl_entry, ACL_USER_OBJ);
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break;
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case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
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acl_set_tag_type(acl_entry, ACL_GROUP_OBJ);
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break;
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case ARCHIVE_ENTRY_ACL_MASK:
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acl_set_tag_type(acl_entry, ACL_MASK);
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break;
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case ARCHIVE_ENTRY_ACL_OTHER:
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acl_set_tag_type(acl_entry, ACL_OTHER);
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break;
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case ARCHIVE_ENTRY_ACL_EVERYONE:
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acl_set_tag_type(acl_entry, ACL_EVERYONE);
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break;
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default:
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/* XXX */
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break;
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}
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switch (ae_type) {
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case ARCHIVE_ENTRY_ACL_TYPE_ALLOW:
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acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_ALLOW);
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break;
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case ARCHIVE_ENTRY_ACL_TYPE_DENY:
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acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_DENY);
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break;
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case ARCHIVE_ENTRY_ACL_TYPE_AUDIT:
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acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_AUDIT);
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break;
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case ARCHIVE_ENTRY_ACL_TYPE_ALARM:
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acl_set_entry_type_np(acl_entry, ACL_ENTRY_TYPE_ALARM);
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break;
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case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
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case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
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// These don't translate directly into the system ACL.
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break;
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default:
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// XXX error handling here.
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break;
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}
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acl_get_permset(acl_entry, &acl_permset);
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acl_clear_perms(acl_permset);
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for (i = 0; i < (int)(sizeof(acl_perm_map) / sizeof(acl_perm_map[0])); ++i) {
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if (ae_permset & acl_perm_map[i].archive_perm)
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acl_add_perm(acl_permset,
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acl_perm_map[i].platform_perm);
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}
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acl_get_flagset_np(acl_entry, &acl_flagset);
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acl_clear_flags_np(acl_flagset);
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for (i = 0; i < (int)(sizeof(acl_inherit_map) / sizeof(acl_inherit_map[0])); ++i) {
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if (ae_permset & acl_inherit_map[i].archive_inherit)
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acl_add_flag_np(acl_flagset,
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acl_inherit_map[i].platform_inherit);
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}
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}
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/* Try restoring the ACL through 'fd' if we can. */
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#if HAVE_ACL_SET_FD
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if (fd >= 0 && acl_type == ACL_TYPE_ACCESS && acl_set_fd(fd, acl) == 0)
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ret = ARCHIVE_OK;
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else
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#else
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#if HAVE_ACL_SET_FD_NP
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if (fd >= 0 && acl_set_fd_np(fd, acl, acl_type) == 0)
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ret = ARCHIVE_OK;
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else
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#endif
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#endif
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#if HAVE_ACL_SET_LINK_NP
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if (acl_set_link_np(name, acl_type, acl) != 0) {
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archive_set_error(a, errno, "Failed to set %s acl", tname);
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ret = ARCHIVE_WARN;
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}
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#else
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/* TODO: Skip this if 'name' is a symlink. */
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if (acl_set_file(name, acl_type, acl) != 0) {
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archive_set_error(a, errno, "Failed to set %s acl", tname);
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ret = ARCHIVE_WARN;
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}
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#endif
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acl_free(acl);
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return (ret);
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}
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#endif
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