| /*- |
| * Copyright (c) 2017 Martin Matuska |
| * 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 |
| * in this position and unchanged. |
| * 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(S) ``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(S) 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 "archive_platform.h" |
| |
| #ifdef HAVE_SYS_TYPES_H |
| #include <sys/types.h> |
| #endif |
| #if HAVE_MEMBERSHIP_H |
| #include <membership.h> |
| #endif |
| #ifdef HAVE_ERRNO_H |
| #include <errno.h> |
| #endif |
| #ifdef HAVE_SYS_ACL_H |
| #define _ACL_PRIVATE /* For debugging */ |
| #include <sys/acl.h> |
| #endif |
| |
| #include "archive.h" |
| #include "archive_entry.h" |
| #include "archive_write_disk_private.h" |
| #include "archive_acl_maps.h" |
| |
| static int |
| set_acl(struct archive *a, int fd, const char *name, |
| struct archive_acl *abstract_acl, |
| int ae_requested_type, const char *tname) |
| { |
| acl_t acl; |
| acl_entry_t acl_entry; |
| acl_permset_t acl_permset; |
| acl_flagset_t acl_flagset; |
| int ret; |
| int ae_type, ae_permset, ae_tag, ae_id; |
| uuid_t ae_uuid; |
| uid_t ae_uid; |
| gid_t ae_gid; |
| const char *ae_name; |
| int entries; |
| int i; |
| |
| ret = ARCHIVE_OK; |
| entries = archive_acl_reset(abstract_acl, ae_requested_type); |
| if (entries == 0) |
| return (ARCHIVE_OK); |
| |
| if (ae_requested_type != ARCHIVE_ENTRY_ACL_TYPE_NFS4) { |
| errno = ENOENT; |
| archive_set_error(a, errno, "Unsupported ACL type"); |
| return (ARCHIVE_FAILED); |
| } |
| |
| acl = acl_init(entries); |
| if (acl == (acl_t)NULL) { |
| archive_set_error(a, errno, |
| "Failed to initialize ACL working storage"); |
| return (ARCHIVE_FAILED); |
| } |
| |
| while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type, |
| &ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) { |
| /* |
| * Mac OS doesn't support NFSv4 ACLs for |
| * owner@, group@ and everyone@. |
| * We skip any of these ACLs found. |
| */ |
| if (ae_tag == ARCHIVE_ENTRY_ACL_USER_OBJ || |
| ae_tag == ARCHIVE_ENTRY_ACL_GROUP_OBJ || |
| ae_tag == ARCHIVE_ENTRY_ACL_EVERYONE) |
| continue; |
| |
| if (acl_create_entry(&acl, &acl_entry) != 0) { |
| archive_set_error(a, errno, |
| "Failed to create a new ACL entry"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| |
| switch (ae_type) { |
| case ARCHIVE_ENTRY_ACL_TYPE_ALLOW: |
| acl_set_tag_type(acl_entry, ACL_EXTENDED_ALLOW); |
| break; |
| case ARCHIVE_ENTRY_ACL_TYPE_DENY: |
| acl_set_tag_type(acl_entry, ACL_EXTENDED_DENY); |
| break; |
| default: |
| /* We don't support any other types on MacOS */ |
| continue; |
| } |
| |
| switch (ae_tag) { |
| case ARCHIVE_ENTRY_ACL_USER: |
| ae_uid = archive_write_disk_uid(a, ae_name, ae_id); |
| if (mbr_uid_to_uuid(ae_uid, ae_uuid) != 0) |
| continue; |
| if (acl_set_qualifier(acl_entry, &ae_uuid) != 0) |
| continue; |
| break; |
| case ARCHIVE_ENTRY_ACL_GROUP: |
| ae_gid = archive_write_disk_gid(a, ae_name, ae_id); |
| if (mbr_gid_to_uuid(ae_gid, ae_uuid) != 0) |
| continue; |
| if (acl_set_qualifier(acl_entry, &ae_uuid) != 0) |
| continue; |
| break; |
| default: |
| archive_set_error(a, ARCHIVE_ERRNO_MISC, |
| "Unsupported ACL tag"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| |
| if (acl_get_permset(acl_entry, &acl_permset) != 0) { |
| archive_set_error(a, errno, |
| "Failed to get ACL permission set"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| if (acl_clear_perms(acl_permset) != 0) { |
| archive_set_error(a, errno, |
| "Failed to clear ACL permissions"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| |
| for (i = 0; i < acl_nfs4_perm_map_size; ++i) { |
| if (ae_permset & acl_nfs4_perm_map[i].a_perm) { |
| if (acl_add_perm(acl_permset, |
| acl_nfs4_perm_map[i].p_perm) != 0) { |
| archive_set_error(a, errno, |
| "Failed to add ACL permission"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| } |
| } |
| |
| /* |
| * acl_get_flagset_np() fails with non-NFSv4 ACLs |
| */ |
| if (acl_get_flagset_np(acl_entry, &acl_flagset) != 0) { |
| archive_set_error(a, errno, |
| "Failed to get flagset from an NFSv4 ACL entry"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| if (acl_clear_flags_np(acl_flagset) != 0) { |
| archive_set_error(a, errno, |
| "Failed to clear flags from an NFSv4 ACL flagset"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| |
| for (i = 0; i < acl_nfs4_flag_map_size; ++i) { |
| if (ae_permset & acl_nfs4_flag_map[i].a_perm) { |
| if (acl_add_flag_np(acl_flagset, |
| acl_nfs4_flag_map[i].p_perm) != 0) { |
| archive_set_error(a, errno, |
| "Failed to add flag to " |
| "NFSv4 ACL flagset"); |
| ret = ARCHIVE_FAILED; |
| goto exit_free; |
| } |
| } |
| } |
| } |
| |
| if (fd >= 0) { |
| if (acl_set_fd_np(fd, acl, ACL_TYPE_EXTENDED) == 0) |
| ret = ARCHIVE_OK; |
| else { |
| if (errno == EOPNOTSUPP) { |
| /* Filesystem doesn't support ACLs */ |
| ret = ARCHIVE_OK; |
| } else { |
| archive_set_error(a, errno, |
| "Failed to set acl on fd: %s", tname); |
| ret = ARCHIVE_WARN; |
| } |
| } |
| } else if (acl_set_link_np(name, ACL_TYPE_EXTENDED, acl) != 0) { |
| if (errno == EOPNOTSUPP) { |
| /* Filesystem doesn't support ACLs */ |
| ret = ARCHIVE_OK; |
| } else { |
| archive_set_error(a, errno, "Failed to set acl: %s", |
| tname); |
| ret = ARCHIVE_WARN; |
| } |
| } |
| exit_free: |
| acl_free(acl); |
| return (ret); |
| } |
| |
| int |
| archive_write_disk_set_acls(struct archive *a, int fd, const char *name, |
| struct archive_acl *abstract_acl, __LA_MODE_T mode) |
| { |
| int ret = ARCHIVE_OK; |
| |
| (void)mode; /* UNUSED */ |
| |
| if ((archive_acl_types(abstract_acl) & |
| ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0) { |
| ret = set_acl(a, fd, name, abstract_acl, |
| ARCHIVE_ENTRY_ACL_TYPE_NFS4, "nfs4"); |
| } |
| return (ret); |
| } |