/*-

 * Copyright (c) 2003-2009 Tim Kientzle

 * Copyright (c) 2010-2012 Michihiro NAKAJIMA

 * 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.

 * 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"

#if ARCHIVE_ACL_FREEBSD

#ifdef HAVE_ERRNO_H

#include <errno.h>

#endif

#ifdef HAVE_FCNTL_H

#include <fcntl.h>

#endif

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#ifdef HAVE_SYS_ACL_H

#define _ACL_PRIVATE /* For debugging */

#include <sys/acl.h>

#endif

#include "archive_entry.h"

#include "archive_private.h"

#include "archive_read_disk_private.h"

#include "archive_write_disk_private.h"

typedef struct {

	const int a_perm;	/* Libarchive permission or flag */

	const int p_perm;	/* Platform permission or flag */

} acl_perm_map_t;

static const acl_perm_map_t acl_posix_perm_map[] = {

	{ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},

	{ARCHIVE_ENTRY_ACL_WRITE, ACL_WRITE},

	{ARCHIVE_ENTRY_ACL_READ, ACL_READ},

};

static const int acl_posix_perm_map_size =

    (int)(sizeof(acl_posix_perm_map)/sizeof(acl_posix_perm_map[0]));

#if ARCHIVE_ACL_FREEBSD_NFS4

static const acl_perm_map_t acl_nfs4_perm_map[] = {

	{ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},

	{ARCHIVE_ENTRY_ACL_READ_DATA, ACL_READ_DATA},

	{ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, ACL_LIST_DIRECTORY},

	{ARCHIVE_ENTRY_ACL_WRITE_DATA, ACL_WRITE_DATA},

	{ARCHIVE_ENTRY_ACL_ADD_FILE, ACL_ADD_FILE},

	{ARCHIVE_ENTRY_ACL_APPEND_DATA, ACL_APPEND_DATA},

	{ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, ACL_ADD_SUBDIRECTORY},

	{ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, ACL_READ_NAMED_ATTRS},

	{ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, ACL_WRITE_NAMED_ATTRS},

	{ARCHIVE_ENTRY_ACL_DELETE_CHILD, ACL_DELETE_CHILD},

	{ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, ACL_READ_ATTRIBUTES},

	{ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, ACL_WRITE_ATTRIBUTES},

	{ARCHIVE_ENTRY_ACL_DELETE, ACL_DELETE},

	{ARCHIVE_ENTRY_ACL_READ_ACL, ACL_READ_ACL},

	{ARCHIVE_ENTRY_ACL_WRITE_ACL, ACL_WRITE_ACL},

	{ARCHIVE_ENTRY_ACL_WRITE_OWNER, ACL_WRITE_OWNER},

	{ARCHIVE_ENTRY_ACL_SYNCHRONIZE, ACL_SYNCHRONIZE}

};

static const int acl_nfs4_perm_map_size =

    (int)(sizeof(acl_nfs4_perm_map)/sizeof(acl_nfs4_perm_map[0]));

static const acl_perm_map_t acl_nfs4_flag_map[] = {

	{ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, ACL_ENTRY_FILE_INHERIT},

	{ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, ACL_ENTRY_DIRECTORY_INHERIT},

	{ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, ACL_ENTRY_NO_PROPAGATE_INHERIT},

	{ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, ACL_ENTRY_INHERIT_ONLY},

	{ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS, ACL_ENTRY_SUCCESSFUL_ACCESS},

	{ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS, ACL_ENTRY_FAILED_ACCESS},

	{ARCHIVE_ENTRY_ACL_ENTRY_INHERITED, ACL_ENTRY_INHERITED}

};

static const int acl_nfs4_flag_map_size =

    (int)(sizeof(acl_nfs4_flag_map)/sizeof(acl_nfs4_flag_map[0]));

#endif /* ARCHIVE_ACL_FREEBSD_NFS4 */

static int

translate_acl(struct archive_read_disk *a,

    struct archive_entry *entry, acl_t acl, int default_entry_acl_type)

{

#if ARCHIVE_ACL_FREEBSD_NFS4

	int brand;

	acl_flagset_t	 acl_flagset;

	acl_entry_type_t acl_type;

#endif

	acl_tag_t	 acl_tag;

	acl_entry_t	 acl_entry;

	acl_permset_t	 acl_permset;

	int		 i, entry_acl_type, perm_map_size;

	const acl_perm_map_t	*perm_map;

	int		 r, s, ae_id, ae_tag, ae_perm;

	void		*q;

	const char	*ae_name;

#if ARCHIVE_ACL_FREEBSD_NFS4

	// FreeBSD "brands" ACLs as POSIX.1e or NFSv4

	// Make sure the "brand" on this ACL is consistent

	// with the default_entry_acl_type bits provided.

	if (acl_get_brand_np(acl, &brand) != 0) {

		archive_set_error(&a->archive, errno,

		    "Failed to read ACL brand");

		return (ARCHIVE_WARN);

	}

	switch (brand) {

	case ACL_BRAND_POSIX:

		switch (default_entry_acl_type) {

		case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:

		case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:

			break;

		default:

			archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,

			    "Invalid ACL entry type for POSIX.1e ACL");

			return (ARCHIVE_WARN);

		}

		break;

	case ACL_BRAND_NFS4:

		if (default_entry_acl_type & ~ARCHIVE_ENTRY_ACL_TYPE_NFS4) {

			archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,

			    "Invalid ACL entry type for NFSv4 ACL");

			return (ARCHIVE_WARN);

		}

		break;

	default:

		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,

		    "Unknown ACL brand");

		return (ARCHIVE_WARN);

	}

#endif

	s = acl_get_entry(acl, ACL_FIRST_ENTRY, &acl_entry);

	if (s == -1) {

		archive_set_error(&a->archive, errno,

		    "Failed to get first ACL entry");

		return (ARCHIVE_WARN);

	}

	while (s == 1) {

		ae_id = -1;

		ae_name = NULL;

		ae_perm = 0;

		if (acl_get_tag_type(acl_entry, &acl_tag) != 0) {

			archive_set_error(&a->archive, errno,

			    "Failed to get ACL tag type");

			return (ARCHIVE_WARN);

		}

		switch (acl_tag) {

		case ACL_USER:

			q = acl_get_qualifier(acl_entry);

			if (q != NULL) {

				ae_id = (int)*(uid_t *)q;

				acl_free(q);

				ae_name = archive_read_disk_uname(&a->archive,

				    ae_id);

			}

			ae_tag = ARCHIVE_ENTRY_ACL_USER;

			break;

		case ACL_GROUP:

			q = acl_get_qualifier(acl_entry);

			if (q != NULL) {

				ae_id = (int)*(gid_t *)q;

				acl_free(q);

				ae_name = archive_read_disk_gname(&a->archive,

				    ae_id);

			}

			ae_tag = ARCHIVE_ENTRY_ACL_GROUP;

			break;

		case ACL_MASK:

			ae_tag = ARCHIVE_ENTRY_ACL_MASK;

			break;

		case ACL_USER_OBJ:

			ae_tag = ARCHIVE_ENTRY_ACL_USER_OBJ;

			break;

		case ACL_GROUP_OBJ:

			ae_tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;

			break;

		case ACL_OTHER:

			ae_tag = ARCHIVE_ENTRY_ACL_OTHER;

			break;

#if ARCHIVE_ACL_FREEBSD_NFS4

		case ACL_EVERYONE:

			ae_tag = ARCHIVE_ENTRY_ACL_EVERYONE;

			break;

#endif

		default:

			/* Skip types that libarchive can't support. */

			s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);

			continue;

		}

		// XXX acl_type maps to allow/deny/audit/YYYY bits

		entry_acl_type = default_entry_acl_type;

#if ARCHIVE_ACL_FREEBSD_NFS4

		if (default_entry_acl_type & ARCHIVE_ENTRY_ACL_TYPE_NFS4) {

			/*

			 * acl_get_entry_type_np() fails with non-NFSv4 ACLs

			 */

			if (acl_get_entry_type_np(acl_entry, &acl_type) != 0) {

				archive_set_error(&a->archive, errno, "Failed "

				    "to get ACL type from a NFSv4 ACL entry");

				return (ARCHIVE_WARN);

			}

			switch (acl_type) {

			case ACL_ENTRY_TYPE_ALLOW:

				entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALLOW;

				break;

			case ACL_ENTRY_TYPE_DENY:

				entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_DENY;

				break;

			case ACL_ENTRY_TYPE_AUDIT:

				entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_AUDIT;

				break;

			case ACL_ENTRY_TYPE_ALARM:

				entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALARM;

				break;

			default:

				archive_set_error(&a->archive, errno,

				    "Invalid NFSv4 ACL entry type");

				return (ARCHIVE_WARN);

			}

			/*

			 * Libarchive stores "flag" (NFSv4 inheritance bits)

			 * in the ae_perm bitmap.

			 *

			 * acl_get_flagset_np() fails with non-NFSv4 ACLs

			 */

			if (acl_get_flagset_np(acl_entry, &acl_flagset) != 0) {

				archive_set_error(&a->archive, errno,

				    "Failed to get flagset from a NFSv4 "

				    "ACL entry");

				return (ARCHIVE_WARN);

			}

			for (i = 0; i < acl_nfs4_flag_map_size; ++i) {

				r = acl_get_flag_np(acl_flagset,

				    acl_nfs4_flag_map[i].p_perm);

				if (r == -1) {

					archive_set_error(&a->archive, errno,

					    "Failed to check flag in a NFSv4 "

					    "ACL flagset");

					return (ARCHIVE_WARN);

				} else if (r)

					ae_perm |= acl_nfs4_flag_map[i].a_perm;

			}

		}

#endif

		if (acl_get_permset(acl_entry, &acl_permset) != 0) {

			archive_set_error(&a->archive, errno,

			    "Failed to get ACL permission set");

			return (ARCHIVE_WARN);

		}

#if ARCHIVE_ACL_FREEBSD_NFS4

		if (default_entry_acl_type & ARCHIVE_ENTRY_ACL_TYPE_NFS4) {

			perm_map_size = acl_nfs4_perm_map_size;

			perm_map = acl_nfs4_perm_map;

		} else {

#endif

			perm_map_size = acl_posix_perm_map_size;

			perm_map = acl_posix_perm_map;

#if ARCHIVE_ACL_FREEBSD_NFS4

		}

#endif

		for (i = 0; i < perm_map_size; ++i) {

			r = acl_get_perm_np(acl_permset, perm_map[i].p_perm);

			if (r == -1) {

				archive_set_error(&a->archive, errno,

				    "Failed to check permission in an ACL "

				    "permission set");

				return (ARCHIVE_WARN);

			} else if (r)

				ae_perm |= perm_map[i].a_perm;

		}

		archive_entry_acl_add_entry(entry, entry_acl_type,

					    ae_perm, ae_tag,

					    ae_id, ae_name);

		s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);

		if (s == -1) {

			archive_set_error(&a->archive, errno,

			    "Failed to get next ACL entry");

			return (ARCHIVE_WARN);

		}

	}

	return (ARCHIVE_OK);

}

static int

set_acl(struct archive *a, int fd, const char *name,

    struct archive_acl *abstract_acl,

    int ae_requested_type, const char *tname)

{

	int		 acl_type = 0;

	acl_t		 acl;

	acl_entry_t	 acl_entry;

	acl_permset_t	 acl_permset;

#if ARCHIVE_ACL_FREEBSD_NFS4

	acl_flagset_t	 acl_flagset;

	int		 r;

#endif

	int		 ret;

	int		 ae_type, ae_permset, ae_tag, ae_id;

	int		 perm_map_size;

	const acl_perm_map_t	*perm_map;

	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);

	switch (ae_requested_type) {

	case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:

		acl_type = ACL_TYPE_ACCESS;

		break;

	case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:

		acl_type = ACL_TYPE_DEFAULT;

		break;

#if ARCHIVE_ACL_FREEBSD_NFS4

	case ARCHIVE_ENTRY_ACL_TYPE_NFS4:

		acl_type = ACL_TYPE_NFS4;

		break;

#endif

	default:

		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) {

		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_tag) {

		case ARCHIVE_ENTRY_ACL_USER:

			ae_uid = archive_write_disk_uid(a, ae_name, ae_id);

			acl_set_tag_type(acl_entry, ACL_USER);

			acl_set_qualifier(acl_entry, &ae_uid);

			break;

		case ARCHIVE_ENTRY_ACL_GROUP:

			ae_gid = archive_write_disk_gid(a, ae_name, ae_id);

			acl_set_tag_type(acl_entry, ACL_GROUP);

			acl_set_qualifier(acl_entry, &ae_gid);

			break;

		case ARCHIVE_ENTRY_ACL_USER_OBJ:

			acl_set_tag_type(acl_entry, ACL_USER_OBJ);

			break;

		case ARCHIVE_ENTRY_ACL_GROUP_OBJ:

			acl_set_tag_type(acl_entry, ACL_GROUP_OBJ);

			break;

		case ARCHIVE_ENTRY_ACL_MASK:

			acl_set_tag_type(acl_entry, ACL_MASK);

			break;

		case ARCHIVE_ENTRY_ACL_OTHER:

			acl_set_tag_type(acl_entry, ACL_OTHER);

			break;

#if ARCHIVE_ACL_FREEBSD_NFS4

		case ARCHIVE_ENTRY_ACL_EVERYONE:

			acl_set_tag_type(acl_entry, ACL_EVERYONE);

			break;

#endif

		default:

			archive_set_error(a, ARCHIVE_ERRNO_MISC,

			    "Unsupported ACL tag");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

#if ARCHIVE_ACL_FREEBSD_NFS4

		r = 0;

		switch (ae_type) {

		case ARCHIVE_ENTRY_ACL_TYPE_ALLOW:

			r = acl_set_entry_type_np(acl_entry,

			    ACL_ENTRY_TYPE_ALLOW);

			break;

		case ARCHIVE_ENTRY_ACL_TYPE_DENY:

			r = acl_set_entry_type_np(acl_entry,

			    ACL_ENTRY_TYPE_DENY);

			break;

		case ARCHIVE_ENTRY_ACL_TYPE_AUDIT:

			r = acl_set_entry_type_np(acl_entry,

			    ACL_ENTRY_TYPE_AUDIT);

			break;

		case ARCHIVE_ENTRY_ACL_TYPE_ALARM:

			r = acl_set_entry_type_np(acl_entry,

			    ACL_ENTRY_TYPE_ALARM);

			break;

		case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:

		case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:

			// These don't translate directly into the system ACL.

			break;

		default:

			archive_set_error(a, ARCHIVE_ERRNO_MISC,

			    "Unsupported ACL entry type");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

		if (r != 0) {

			archive_set_error(a, errno,

			    "Failed to set ACL entry type");

			ret = ARCHIVE_FAILED;

			goto exit_free;

		}

#endif

		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;

		}

#if ARCHIVE_ACL_FREEBSD_NFS4

		if (ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_NFS4) {

			perm_map_size = acl_nfs4_perm_map_size;

			perm_map = acl_nfs4_perm_map;

		} else {

#endif

			perm_map_size = acl_posix_perm_map_size;

			perm_map = acl_posix_perm_map;

#if ARCHIVE_ACL_FREEBSD_NFS4

		}

#endif

		for (i = 0; i < perm_map_size; ++i) {

			if (ae_permset & perm_map[i].a_perm) {

				if (acl_add_perm(acl_permset,

				    perm_map[i].p_perm) != 0) {

					archive_set_error(a, errno,

					    "Failed to add ACL permission");

					ret = ARCHIVE_FAILED;

					goto exit_free;

				}

			}

		}

#if ARCHIVE_ACL_FREEBSD_NFS4

		if (ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_NFS4) {

			/*

			 * 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;

					}

				}

			}

		}

#endif

	}

	/* Try restoring the ACL through 'fd' if we can. */

	if (fd >= 0) {

		if (acl_set_fd_np(fd, acl, acl_type) == 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;

			}

		}

	}

#if HAVE_ACL_SET_LINK_NP

	else if (acl_set_link_np(name, acl_type, acl) != 0)

#else

	/* FreeBSD older than 8.0 */

	else if (acl_set_file(name, acl_type, acl) != 0)

#endif

	{

		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_read_disk_entry_setup_acls(struct archive_read_disk *a,

    struct archive_entry *entry, int *fd)

{

	const char	*accpath;

	acl_t		acl;

	int		r;

	accpath = NULL;

	if (*fd < 0) {

		accpath = archive_read_disk_entry_setup_path(a, entry, fd);

		if (accpath == NULL)

			return (ARCHIVE_WARN);

	}

	archive_entry_acl_clear(entry);

	acl = NULL;

#if ARCHIVE_ACL_FREEBSD_NFS4

	/* Try NFSv4 ACL first. */

	if (*fd >= 0)

		acl = acl_get_fd_np(*fd, ACL_TYPE_NFS4);

	else if (!a->follow_symlinks)

		acl = acl_get_link_np(accpath, ACL_TYPE_NFS4);

	else

		acl = acl_get_file(accpath, ACL_TYPE_NFS4);

	/* Ignore "trivial" ACLs that just mirror the file mode. */

	if (acl != NULL && acl_is_trivial_np(acl, &r) == 0 && r == 1) {

		acl_free(acl);

		acl = NULL;

		return (ARCHIVE_OK);

	}

	if (acl != NULL) {

		r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_NFS4);

		acl_free(acl);

		acl = NULL;

		if (r != ARCHIVE_OK) {

			archive_set_error(&a->archive, errno,

			    "Couldn't translate NFSv4 ACLs");

		}

		return (r);

	}

#endif

	/* Retrieve access ACL from file. */

	if (*fd >= 0)

		acl = acl_get_fd_np(*fd, ACL_TYPE_ACCESS);

#if HAVE_ACL_GET_LINK_NP

	else if (!a->follow_symlinks)

		acl = acl_get_link_np(accpath, ACL_TYPE_ACCESS);

#else

	else if ((!a->follow_symlinks)

	    && (archive_entry_filetype(entry) == AE_IFLNK))

		/* We can't get the ACL of a symlink, so we assume it can't

		   have one. */

		acl = NULL;

#endif

	else

		acl = acl_get_file(accpath, ACL_TYPE_ACCESS);

#if HAVE_ACL_IS_TRIVIAL_NP

	/* Ignore "trivial" ACLs that just mirror the file mode. */

	if (acl != NULL && acl_is_trivial_np(acl, &r) == 0 && r == 1) {

		acl_free(acl);

		acl = NULL;

	}

#endif

	if (acl != NULL) {

		r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_ACCESS);

		acl_free(acl);

		acl = NULL;

		if (r != ARCHIVE_OK) {

			archive_set_error(&a->archive, errno,

			    "Couldn't translate access ACLs");

			return (r);

		}

	}

	/* Only directories can have default ACLs. */

	if (S_ISDIR(archive_entry_mode(entry))) {

		if (*fd >= 0)

			acl = acl_get_fd_np(*fd, ACL_TYPE_DEFAULT);

		else

			acl = acl_get_file(accpath, ACL_TYPE_DEFAULT);

		if (acl != NULL) {

			r = translate_acl(a, entry, acl,

			    ARCHIVE_ENTRY_ACL_TYPE_DEFAULT);

			acl_free(acl);

			if (r != ARCHIVE_OK) {

				archive_set_error(&a->archive, errno,

				    "Couldn't translate default ACLs");

				return (r);

			}

		}

	}

	return (ARCHIVE_OK);

}

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_POSIX1E) != 0) {

		if ((archive_acl_types(abstract_acl)

		    & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {

			ret = set_acl(a, fd, name, abstract_acl,

			    ARCHIVE_ENTRY_ACL_TYPE_ACCESS, "access");

			if (ret != ARCHIVE_OK)

				return (ret);

		}

		if ((archive_acl_types(abstract_acl)

		    & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0)

			ret = set_acl(a, fd, name, abstract_acl,

			    ARCHIVE_ENTRY_ACL_TYPE_DEFAULT, "default");

		/* Simultaneous POSIX.1e and NFSv4 is not supported */

		return (ret);

	}

#if ARCHIVE_ACL_FREEBSD_NFS4

	else 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");

	}

#endif

	return (ret);

}

#endif	/* ARCHIVE_ACL_FREEBSD */