示例#1
0
/*
 * smb_sd_write
 *
 * Takes a Win SD in absolute form, converts it to
 * ZFS format and write it to filesystem. The write routine
 * converts ZFS acl to Posix acl if required.
 */
uint32_t
smb_sd_write(smb_request_t *sr, smb_sd_t *sd, uint32_t secinfo)
{
	smb_node_t *node;
	smb_fssd_t fs_sd;
	uint32_t status;
	uint32_t sd_flags;
	int error;

	node = sr->fid_ofile->f_node;
	sd_flags = smb_node_is_dir(node) ? SMB_FSSD_FLAGS_DIR : 0;
	smb_fssd_init(&fs_sd, secinfo, sd_flags);

	status = smb_sd_tofs(sd, &fs_sd);
	if (status != NT_STATUS_SUCCESS) {
		smb_fssd_term(&fs_sd);
		return (status);
	}

	error = smb_fsop_sdwrite(sr, sr->user_cr, node, &fs_sd, 0);
	smb_fssd_term(&fs_sd);

	if (error) {
		if (error == EBADE)
			return (NT_STATUS_INVALID_OWNER);
		return (smb_errno2status(error));
	}

	return (NT_STATUS_SUCCESS);
}
示例#2
0
/*
 * smb_odir_open
 *
 * Create an odir representing the directory specified in pathname.
 *
 * Returns:
 * odid - Unique identifier of newly created odir.
 *    0 - error, error details set in sr.
 */
uint16_t
smb_odir_open(smb_request_t *sr, char *path, uint16_t sattr, uint32_t flags)
{
	int		rc;
	smb_tree_t	*tree;
	smb_node_t	*dnode;
	char		pattern[MAXNAMELEN];
	uint16_t 	odid;
	cred_t		*cr;

	ASSERT(sr);
	ASSERT(sr->sr_magic == SMB_REQ_MAGIC);
	ASSERT(sr->tid_tree);
	ASSERT(sr->tid_tree->t_magic == SMB_TREE_MAGIC);

	tree = sr->tid_tree;

	if (sr->session->dialect < NT_LM_0_12)
		smb_convert_wildcards(path);

	rc = smb_pathname_reduce(sr, sr->user_cr, path,
	    tree->t_snode, tree->t_snode, &dnode, pattern);
	if (rc != 0) {
		smbsr_errno(sr, rc);
		return (0);
	}

	if (!smb_node_is_dir(dnode)) {
		smbsr_error(sr, NT_STATUS_OBJECT_PATH_NOT_FOUND,
		    ERRDOS, ERROR_PATH_NOT_FOUND);
		smb_node_release(dnode);
		return (0);
	}

	if (smb_fsop_access(sr, sr->user_cr, dnode, FILE_LIST_DIRECTORY) != 0) {
		smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
		    ERRDOS, ERROR_ACCESS_DENIED);
		smb_node_release(dnode);
		return (0);
	}

	if (flags & SMB_ODIR_OPENF_BACKUP_INTENT)
		cr = smb_user_getprivcred(sr->uid_user);
	else
		cr = sr->uid_user->u_cred;

	odid = smb_odir_create(sr, dnode, pattern, sattr, cr);
	smb_node_release(dnode);
	return (odid);
}
示例#3
0
/*
 * smb_sd_read
 *
 * Read uid, gid and ACL from filesystem. The returned ACL from read
 * routine is always in ZFS format. Convert the ZFS acl to a Win acl
 * and return the Win SD in absolute form.
 *
 * NOTE: upon successful return caller MUST free the memory allocated
 * for the returned SD by calling smb_sd_term().
 */
uint32_t
smb_sd_read(smb_request_t *sr, smb_sd_t *sd, uint32_t secinfo)
{
	smb_fssd_t fs_sd;
	smb_node_t *node;
	uint32_t status = NT_STATUS_SUCCESS;
	uint32_t sd_flags;
	int error;

	node = sr->fid_ofile->f_node;
	sd_flags = smb_node_is_dir(node) ? SMB_FSSD_FLAGS_DIR : 0;
	smb_fssd_init(&fs_sd, secinfo, sd_flags);

	error = smb_fsop_sdread(sr, sr->user_cr, node, &fs_sd);
	if (error)
		return (smb_errno2status(error));

	status = smb_sd_fromfs(&fs_sd, sd);
	smb_fssd_term(&fs_sd);

	return (status);
}
示例#4
0
/*
 * smb_odir_lookup_link
 *
 * If the file is a symlink we lookup the object to which the
 * symlink refers so that we can return its attributes.
 * This can cause a problem if a symlink in a sub-directory
 * points to a parent directory (some UNIX GUI's create a symlink
 * in $HOME/.desktop that points to the user's home directory).
 * Some Windows applications (e.g. virus scanning) loop/hang
 * trying to follow this recursive path and there is little
 * we can do because the path is constructed on the client.
 * smb_dirsymlink_enable allows an end-user to disable
 * symlinks to directories. Symlinks to other object types
 * should be unaffected.
 *
 * Returns: B_TRUE  - followed link. tgt_node and tgt_attr set
 *          B_FALSE - link not followed
 */
static boolean_t
smb_odir_lookup_link(smb_request_t *sr, smb_odir_t *od,
    char *fname, smb_node_t **tgt_node)
{
	int rc;
	uint32_t flags = SMB_FOLLOW_LINKS | SMB_CASE_SENSITIVE;

	rc = smb_fsop_lookup(sr, od->d_cred, flags,
	    od->d_tree->t_snode, od->d_dnode, fname, tgt_node);
	if (rc != 0) {
		*tgt_node = NULL;
		return (B_FALSE);
	}

	if (smb_node_is_dir(*tgt_node) && (!smb_dirsymlink_enable)) {
		smb_node_release(*tgt_node);
		*tgt_node = NULL;
		return (B_FALSE);
	}

	return (B_TRUE);
}
示例#5
0
/*
 * smb_set_open_timestamps
 *
 * Last write time:
 * - If the last_write time specified in the open params is not 0 or -1,
 *   use it as file's mtime. This will be considered an explicitly set
 *   timestamps, not reset by subsequent writes.
 *
 * Opening existing file (not directory):
 * - If opening an existing file for overwrite set initial ATIME, MTIME
 *   & CTIME to now. (This is achieved by setting them as pending then forcing
 *   an smb_node_setattr() to apply pending times.)
 *
 * - Note  If opening an existing file NOT for overwrite, windows would
 *   set the atime on file close, however setting the atime would cause
 *   the ARCHIVE attribute to be set, which does not occur on windows,
 *   so we do not do the atime update.
 *
 * Returns: errno
 */
static int
smb_set_open_timestamps(smb_request_t *sr, smb_ofile_t *of, boolean_t created)
{
	int		rc = 0;
	smb_arg_open_t	*op = &sr->sr_open;
	smb_node_t	*node = of->f_node;
	boolean_t	existing_file, set_times;
	smb_attr_t	attr;

	bzero(&attr, sizeof (smb_attr_t));
	set_times = B_FALSE;

	if ((op->mtime.tv_sec != 0) && (op->mtime.tv_sec != UINT_MAX)) {
		attr.sa_mask = SMB_AT_MTIME;
		attr.sa_vattr.va_mtime = op->mtime;
		set_times = B_TRUE;
	}

	existing_file = !(created || smb_node_is_dir(node));
	if (existing_file) {
		switch (op->create_disposition) {
		case FILE_SUPERSEDE:
		case FILE_OVERWRITE_IF:
		case FILE_OVERWRITE:
			smb_ofile_set_write_time_pending(of);
			set_times = B_TRUE;
			break;
		default:
			break;
		}
	}

	if (set_times)
		rc = smb_node_setattr(sr, node, sr->user_cr, of, &attr);

	return (rc);
}
示例#6
0
/*
 * smb_open_subr
 *
 * Notes on write-through behaviour. It looks like pre-LM0.12 versions
 * of the protocol specify the write-through mode when a file is opened,
 * (SmbOpen, SmbOpenAndX) so the write calls (SmbWrite, SmbWriteAndClose,
 * SmbWriteAndUnlock) don't need to contain a write-through flag.
 *
 * With LM0.12, the open calls (SmbCreateAndX, SmbNtTransactCreate)
 * don't indicate which write-through mode to use. Instead the write
 * calls (SmbWriteAndX, SmbWriteRaw) specify the mode on a per call
 * basis.
 *
 * We don't care which open call was used to get us here, we just need
 * to ensure that the write-through mode flag is copied from the open
 * parameters to the node. We test the omode write-through flag in all
 * write functions.
 *
 * This function will return NT status codes but it also raises errors,
 * in which case it won't return to the caller. Be careful how you
 * handle things in here.
 *
 * The following rules apply when processing a file open request:
 *
 * - Oplocks must be broken prior to share checking as the break may
 *   cause other clients to close the file, which would affect sharing
 *   checks.
 *
 * - Share checks must take place prior to access checks for correct
 * Windows semantics and to prevent unnecessary NFS delegation recalls.
 *
 * - Oplocks must be acquired after open to ensure the correct
 * synchronization with NFS delegation and FEM installation.
 *
 * DOS readonly bit rules
 *
 * 1. The creator of a readonly file can write to/modify the size of the file
 * using the original create fid, even though the file will appear as readonly
 * to all other fids and via a CIFS getattr call.
 * The readonly bit therefore cannot be set in the filesystem until the file
 * is closed (smb_ofile_close). It is accounted for via ofile and node flags.
 *
 * 2. A setinfo operation (using either an open fid or a path) to set/unset
 * readonly will be successful regardless of whether a creator of a readonly
 * file has an open fid (and has the special privilege mentioned in #1,
 * above).  I.e., the creator of a readonly fid holding that fid will no longer
 * have a special privilege.
 *
 * 3. The DOS readonly bit affects only data and some metadata.
 * The following metadata can be changed regardless of the readonly bit:
 * 	- security descriptors
 *	- DOS attributes
 *	- timestamps
 *
 * In the current implementation, the file size cannot be changed (except for
 * the exceptions in #1 and #2, above).
 *
 *
 * DOS attribute rules
 *
 * These rules are specific to creating / opening files and directories.
 * How the attribute value (specifically ZERO or FILE_ATTRIBUTE_NORMAL)
 * should be interpreted may differ in other requests.
 *
 * - An attribute value equal to ZERO or FILE_ATTRIBUTE_NORMAL means that the
 *   file's attributes should be cleared.
 * - If FILE_ATTRIBUTE_NORMAL is specified with any other attributes,
 *   FILE_ATTRIBUTE_NORMAL is ignored.
 *
 * 1. Creating a new file
 * - The request attributes + FILE_ATTRIBUTE_ARCHIVE are applied to the file.
 *
 * 2. Creating a new directory
 * - The request attributes + FILE_ATTRIBUTE_DIRECTORY are applied to the file.
 * - FILE_ATTRIBUTE_ARCHIVE does not get set.
 *
 * 3. Overwriting an existing file
 * - the request attributes are used as search attributes. If the existing
 *   file does not meet the search criteria access is denied.
 * - otherwise, applies attributes + FILE_ATTRIBUTE_ARCHIVE.
 *
 * 4. Opening an existing file or directory
 *    The request attributes are ignored.
 */
static uint32_t
smb_open_subr(smb_request_t *sr)
{
	boolean_t	created = B_FALSE;
	boolean_t	last_comp_found = B_FALSE;
	smb_node_t	*node = NULL;
	smb_node_t	*dnode = NULL;
	smb_node_t	*cur_node = NULL;
	smb_arg_open_t	*op = &sr->sr_open;
	int		rc;
	smb_ofile_t	*of;
	smb_attr_t	new_attr;
	int		max_requested = 0;
	uint32_t	max_allowed;
	uint32_t	status = NT_STATUS_SUCCESS;
	int		is_dir;
	smb_error_t	err;
	boolean_t	is_stream = B_FALSE;
	int		lookup_flags = SMB_FOLLOW_LINKS;
	uint32_t	uniq_fid;
	smb_pathname_t	*pn = &op->fqi.fq_path;
	smb_server_t	*sv = sr->sr_server;

	is_dir = (op->create_options & FILE_DIRECTORY_FILE) ? 1 : 0;

	/*
	 * If the object being created or opened is a directory
	 * the Disposition parameter must be one of FILE_CREATE,
	 * FILE_OPEN, or FILE_OPEN_IF
	 */
	if (is_dir) {
		if ((op->create_disposition != FILE_CREATE) &&
		    (op->create_disposition != FILE_OPEN_IF) &&
		    (op->create_disposition != FILE_OPEN)) {
			smbsr_error(sr, NT_STATUS_INVALID_PARAMETER,
			    ERRDOS, ERROR_INVALID_ACCESS);
			return (NT_STATUS_INVALID_PARAMETER);
		}
	}

	if (op->desired_access & MAXIMUM_ALLOWED) {
		max_requested = 1;
		op->desired_access &= ~MAXIMUM_ALLOWED;
	}
	op->desired_access = smb_access_generic_to_file(op->desired_access);

	if (sr->session->s_file_cnt >= SMB_SESSION_OFILE_MAX) {
		ASSERT(sr->uid_user);
		cmn_err(CE_NOTE, "smbsrv[%s\\%s]: TOO_MANY_OPENED_FILES",
		    sr->uid_user->u_domain, sr->uid_user->u_name);

		smbsr_error(sr, NT_STATUS_TOO_MANY_OPENED_FILES,
		    ERRDOS, ERROR_TOO_MANY_OPEN_FILES);
		return (NT_STATUS_TOO_MANY_OPENED_FILES);
	}

	/* This must be NULL at this point */
	sr->fid_ofile = NULL;

	op->devstate = 0;

	switch (sr->tid_tree->t_res_type & STYPE_MASK) {
	case STYPE_DISKTREE:
	case STYPE_PRINTQ:
		break;

	case STYPE_IPC:

		if ((rc = smb_threshold_enter(&sv->sv_opipe_ct)) != 0) {
			status = RPC_NT_SERVER_TOO_BUSY;
			smbsr_error(sr, status, 0, 0);
			return (status);
		}

		/*
		 * No further processing for IPC, we need to either
		 * raise an exception or return success here.
		 */
		if ((status = smb_opipe_open(sr)) != NT_STATUS_SUCCESS)
			smbsr_error(sr, status, 0, 0);

		smb_threshold_exit(&sv->sv_opipe_ct, sv);
		return (status);

	default:
		smbsr_error(sr, NT_STATUS_BAD_DEVICE_TYPE,
		    ERRDOS, ERROR_BAD_DEV_TYPE);
		return (NT_STATUS_BAD_DEVICE_TYPE);
	}

	smb_pathname_init(sr, pn, pn->pn_path);
	if (!smb_pathname_validate(sr, pn))
		return (sr->smb_error.status);

	if (strlen(pn->pn_path) >= MAXPATHLEN) {
		smbsr_error(sr, 0, ERRSRV, ERRfilespecs);
		return (NT_STATUS_NAME_TOO_LONG);
	}

	if (is_dir) {
		if (!smb_validate_dirname(sr, pn))
			return (sr->smb_error.status);
	} else {
		if (!smb_validate_object_name(sr, pn))
			return (sr->smb_error.status);
	}

	cur_node = op->fqi.fq_dnode ?
	    op->fqi.fq_dnode : sr->tid_tree->t_snode;

	/*
	 * if no path or filename are specified the stream should be
	 * created on cur_node
	 */
	if (!is_dir && !pn->pn_pname && !pn->pn_fname && pn->pn_sname) {
		/*
		 * Can't currently handle a stream on the tree root.
		 * If a stream is being opened return "not found", otherwise
		 * return "access denied".
		 */
		if (cur_node == sr->tid_tree->t_snode) {
			if (op->create_disposition == FILE_OPEN) {
				smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND,
				    ERRDOS, ERROR_FILE_NOT_FOUND);
				return (NT_STATUS_OBJECT_NAME_NOT_FOUND);
			}
			smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRDOS,
			    ERROR_ACCESS_DENIED);
			return (NT_STATUS_ACCESS_DENIED);
		}

		(void) snprintf(op->fqi.fq_last_comp,
		    sizeof (op->fqi.fq_last_comp),
		    "%s%s", cur_node->od_name, pn->pn_sname);

		op->fqi.fq_dnode = cur_node->n_dnode;
		smb_node_ref(op->fqi.fq_dnode);
	} else {
		if (rc = smb_pathname_reduce(sr, sr->user_cr, pn->pn_path,
		    sr->tid_tree->t_snode, cur_node, &op->fqi.fq_dnode,
		    op->fqi.fq_last_comp)) {
			smbsr_errno(sr, rc);
			return (sr->smb_error.status);
		}
	}

	/*
	 * If the access mask has only DELETE set (ignore
	 * FILE_READ_ATTRIBUTES), then assume that this
	 * is a request to delete the link (if a link)
	 * and do not follow links.  Otherwise, follow
	 * the link to the target.
	 */
	if ((op->desired_access & ~FILE_READ_ATTRIBUTES) == DELETE)
		lookup_flags &= ~SMB_FOLLOW_LINKS;

	rc = smb_fsop_lookup_name(sr, kcred, lookup_flags,
	    sr->tid_tree->t_snode, op->fqi.fq_dnode, op->fqi.fq_last_comp,
	    &op->fqi.fq_fnode);

	if (rc == 0) {
		last_comp_found = B_TRUE;
		rc = smb_node_getattr(sr, op->fqi.fq_fnode,
		    &op->fqi.fq_fattr);
		if (rc != 0) {
			smb_node_release(op->fqi.fq_fnode);
			smb_node_release(op->fqi.fq_dnode);
			smbsr_error(sr, NT_STATUS_INTERNAL_ERROR,
			    ERRDOS, ERROR_INTERNAL_ERROR);
			return (sr->smb_error.status);
		}
	} else if (rc == ENOENT) {
		last_comp_found = B_FALSE;
		op->fqi.fq_fnode = NULL;
		rc = 0;
	} else {
		smb_node_release(op->fqi.fq_dnode);
		smbsr_errno(sr, rc);
		return (sr->smb_error.status);
	}


	/*
	 * The uniq_fid is a CIFS-server-wide unique identifier for an ofile
	 * which is used to uniquely identify open instances for the
	 * VFS share reservation and POSIX locks.
	 */

	uniq_fid = SMB_UNIQ_FID();

	if (last_comp_found) {

		node = op->fqi.fq_fnode;
		dnode = op->fqi.fq_dnode;

		if (!smb_node_is_file(node) && !smb_node_is_dir(node) &&
		    !smb_node_is_symlink(node)) {
			smb_node_release(node);
			smb_node_release(dnode);
			smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRDOS,
			    ERRnoaccess);
			return (NT_STATUS_ACCESS_DENIED);
		}

		/*
		 * Reject this request if either:
		 * - the target IS a directory and the client requires that
		 *   it must NOT be (required by Lotus Notes)
		 * - the target is NOT a directory and client requires that
		 *   it MUST be.
		 */
		if (smb_node_is_dir(node)) {
			if (op->create_options & FILE_NON_DIRECTORY_FILE) {
				smb_node_release(node);
				smb_node_release(dnode);
				smbsr_error(sr, NT_STATUS_FILE_IS_A_DIRECTORY,
				    ERRDOS, ERROR_ACCESS_DENIED);
				return (NT_STATUS_FILE_IS_A_DIRECTORY);
			}
		} else {
			if ((op->create_options & FILE_DIRECTORY_FILE) ||
			    (op->nt_flags & NT_CREATE_FLAG_OPEN_TARGET_DIR)) {
				smb_node_release(node);
				smb_node_release(dnode);
				smbsr_error(sr, NT_STATUS_NOT_A_DIRECTORY,
				    ERRDOS, ERROR_DIRECTORY);
				return (NT_STATUS_NOT_A_DIRECTORY);
			}
		}

		/*
		 * No more open should be accepted when "Delete on close"
		 * flag is set.
		 */
		if (node->flags & NODE_FLAGS_DELETE_ON_CLOSE) {
			smb_node_release(node);
			smb_node_release(dnode);
			smbsr_error(sr, NT_STATUS_DELETE_PENDING,
			    ERRDOS, ERROR_ACCESS_DENIED);
			return (NT_STATUS_DELETE_PENDING);
		}

		/*
		 * Specified file already exists so the operation should fail.
		 */
		if (op->create_disposition == FILE_CREATE) {
			smb_node_release(node);
			smb_node_release(dnode);
			smbsr_error(sr, NT_STATUS_OBJECT_NAME_COLLISION,
			    ERRDOS, ERROR_FILE_EXISTS);
			return (NT_STATUS_OBJECT_NAME_COLLISION);
		}

		/*
		 * Windows seems to check read-only access before file
		 * sharing check.
		 *
		 * Check to see if the file is currently readonly (irrespective
		 * of whether this open will make it readonly).
		 */
		if (SMB_PATHFILE_IS_READONLY(sr, node)) {
			/* Files data only */
			if (!smb_node_is_dir(node)) {
				if (op->desired_access & (FILE_WRITE_DATA |
				    FILE_APPEND_DATA)) {
					smb_node_release(node);
					smb_node_release(dnode);
					smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
					    ERRDOS, ERRnoaccess);
					return (NT_STATUS_ACCESS_DENIED);
				}
			}
		}

		/*
		 * Oplock break is done prior to sharing checks as the break
		 * may cause other clients to close the file which would
		 * affect the sharing checks.
		 */
		smb_node_inc_opening_count(node);
		smb_open_oplock_break(sr, node);

		smb_node_wrlock(node);

		if ((op->create_disposition == FILE_SUPERSEDE) ||
		    (op->create_disposition == FILE_OVERWRITE_IF) ||
		    (op->create_disposition == FILE_OVERWRITE)) {

			if ((!(op->desired_access &
			    (FILE_WRITE_DATA | FILE_APPEND_DATA |
			    FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA))) ||
			    (!smb_sattr_check(op->fqi.fq_fattr.sa_dosattr,
			    op->dattr))) {
				smb_node_unlock(node);
				smb_node_dec_opening_count(node);
				smb_node_release(node);
				smb_node_release(dnode);
				smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
				    ERRDOS, ERRnoaccess);
				return (NT_STATUS_ACCESS_DENIED);
			}
		}

		status = smb_fsop_shrlock(sr->user_cr, node, uniq_fid,
		    op->desired_access, op->share_access);

		if (status == NT_STATUS_SHARING_VIOLATION) {
			smb_node_unlock(node);
			smb_node_dec_opening_count(node);
			smb_node_release(node);
			smb_node_release(dnode);
			return (status);
		}

		status = smb_fsop_access(sr, sr->user_cr, node,
		    op->desired_access);

		if (status != NT_STATUS_SUCCESS) {
			smb_fsop_unshrlock(sr->user_cr, node, uniq_fid);

			smb_node_unlock(node);
			smb_node_dec_opening_count(node);
			smb_node_release(node);
			smb_node_release(dnode);

			if (status == NT_STATUS_PRIVILEGE_NOT_HELD) {
				smbsr_error(sr, status,
				    ERRDOS, ERROR_PRIVILEGE_NOT_HELD);
				return (status);
			} else {
				smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
				    ERRDOS, ERROR_ACCESS_DENIED);
				return (NT_STATUS_ACCESS_DENIED);
			}
		}

		switch (op->create_disposition) {
		case FILE_SUPERSEDE:
		case FILE_OVERWRITE_IF:
		case FILE_OVERWRITE:
			if (smb_node_is_dir(node)) {
				smb_fsop_unshrlock(sr->user_cr, node, uniq_fid);
				smb_node_unlock(node);
				smb_node_dec_opening_count(node);
				smb_node_release(node);
				smb_node_release(dnode);
				smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
				    ERRDOS, ERROR_ACCESS_DENIED);
				return (NT_STATUS_ACCESS_DENIED);
			}

			op->dattr |= FILE_ATTRIBUTE_ARCHIVE;
			/* Don't apply readonly bit until smb_ofile_close */
			if (op->dattr & FILE_ATTRIBUTE_READONLY) {
				op->created_readonly = B_TRUE;
				op->dattr &= ~FILE_ATTRIBUTE_READONLY;
			}

			bzero(&new_attr, sizeof (new_attr));
			new_attr.sa_dosattr = op->dattr;
			new_attr.sa_vattr.va_size = op->dsize;
			new_attr.sa_mask = SMB_AT_DOSATTR | SMB_AT_SIZE;
			rc = smb_fsop_setattr(sr, sr->user_cr, node, &new_attr);
			if (rc != 0) {
				smb_fsop_unshrlock(sr->user_cr, node, uniq_fid);
				smb_node_unlock(node);
				smb_node_dec_opening_count(node);
				smb_node_release(node);
				smb_node_release(dnode);
				smbsr_errno(sr, rc);
				return (sr->smb_error.status);
			}

			/*
			 * If file is being replaced, remove existing streams
			 */
			if (SMB_IS_STREAM(node) == 0) {
				rc = smb_fsop_remove_streams(sr, sr->user_cr,
				    node);
				if (rc != 0) {
					smb_fsop_unshrlock(sr->user_cr, node,
					    uniq_fid);
					smb_node_unlock(node);
					smb_node_dec_opening_count(node);
					smb_node_release(node);
					smb_node_release(dnode);
					return (sr->smb_error.status);
				}
			}

			op->action_taken = SMB_OACT_TRUNCATED;
			break;

		default:
			/*
			 * FILE_OPEN or FILE_OPEN_IF.
			 */
			op->action_taken = SMB_OACT_OPENED;
			break;
		}
	} else {
		/* Last component was not found. */
		dnode = op->fqi.fq_dnode;

		if (is_dir == 0)
			is_stream = smb_is_stream_name(pn->pn_path);

		if ((op->create_disposition == FILE_OPEN) ||
		    (op->create_disposition == FILE_OVERWRITE)) {
			smb_node_release(dnode);
			smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND,
			    ERRDOS, ERROR_FILE_NOT_FOUND);
			return (NT_STATUS_OBJECT_NAME_NOT_FOUND);
		}

		if (pn->pn_fname && smb_is_invalid_filename(pn->pn_fname)) {
			smb_node_release(dnode);
			smbsr_error(sr, NT_STATUS_OBJECT_NAME_INVALID,
			    ERRDOS, ERROR_INVALID_NAME);
			return (NT_STATUS_OBJECT_NAME_INVALID);
		}

		/*
		 * lock the parent dir node in case another create
		 * request to the same parent directory comes in.
		 */
		smb_node_wrlock(dnode);

		/* Don't apply readonly bit until smb_ofile_close */
		if (op->dattr & FILE_ATTRIBUTE_READONLY) {
			op->dattr &= ~FILE_ATTRIBUTE_READONLY;
			op->created_readonly = B_TRUE;
		}

		bzero(&new_attr, sizeof (new_attr));
		if ((op->crtime.tv_sec != 0) &&
		    (op->crtime.tv_sec != UINT_MAX)) {

			new_attr.sa_mask |= SMB_AT_CRTIME;
			new_attr.sa_crtime = op->crtime;
		}

		if (is_dir == 0) {
			op->dattr |= FILE_ATTRIBUTE_ARCHIVE;
			new_attr.sa_dosattr = op->dattr;
			new_attr.sa_vattr.va_type = VREG;
			new_attr.sa_vattr.va_mode = is_stream ? S_IRUSR :
			    S_IRUSR | S_IRGRP | S_IROTH |
			    S_IWUSR | S_IWGRP | S_IWOTH;
			new_attr.sa_mask |=
			    SMB_AT_DOSATTR | SMB_AT_TYPE | SMB_AT_MODE;

			if (op->dsize) {
				new_attr.sa_vattr.va_size = op->dsize;
				new_attr.sa_mask |= SMB_AT_SIZE;
			}

			rc = smb_fsop_create(sr, sr->user_cr, dnode,
			    op->fqi.fq_last_comp, &new_attr, &op->fqi.fq_fnode);

			if (rc != 0) {
				smb_node_unlock(dnode);
				smb_node_release(dnode);
				smbsr_errno(sr, rc);
				return (sr->smb_error.status);
			}

			node = op->fqi.fq_fnode;
			smb_node_inc_opening_count(node);
			smb_node_wrlock(node);

			status = smb_fsop_shrlock(sr->user_cr, node, uniq_fid,
			    op->desired_access, op->share_access);

			if (status == NT_STATUS_SHARING_VIOLATION) {
				smb_node_unlock(node);
				smb_node_dec_opening_count(node);
				smb_delete_new_object(sr);
				smb_node_release(node);
				smb_node_unlock(dnode);
				smb_node_release(dnode);
				return (status);
			}
		} else {
			op->dattr |= FILE_ATTRIBUTE_DIRECTORY;
			new_attr.sa_dosattr = op->dattr;
			new_attr.sa_vattr.va_type = VDIR;
			new_attr.sa_vattr.va_mode = 0777;
			new_attr.sa_mask |=
			    SMB_AT_DOSATTR | SMB_AT_TYPE | SMB_AT_MODE;

			rc = smb_fsop_mkdir(sr, sr->user_cr, dnode,
			    op->fqi.fq_last_comp, &new_attr, &op->fqi.fq_fnode);
			if (rc != 0) {
				smb_node_unlock(dnode);
				smb_node_release(dnode);
				smbsr_errno(sr, rc);
				return (sr->smb_error.status);
			}

			node = op->fqi.fq_fnode;
			smb_node_inc_opening_count(node);
			smb_node_wrlock(node);
		}

		created = B_TRUE;
		op->action_taken = SMB_OACT_CREATED;
	}

	if (max_requested) {
		smb_fsop_eaccess(sr, sr->user_cr, node, &max_allowed);
		op->desired_access |= max_allowed;
	}

	status = NT_STATUS_SUCCESS;

	of = smb_ofile_open(sr->tid_tree, node, sr->smb_pid, op, SMB_FTYPE_DISK,
	    uniq_fid, &err);
	if (of == NULL) {
		smbsr_error(sr, err.status, err.errcls, err.errcode);
		status = err.status;
	}

	if (status == NT_STATUS_SUCCESS) {
		if (!smb_tree_is_connected(sr->tid_tree)) {
			smbsr_error(sr, 0, ERRSRV, ERRinvnid);
			status = NT_STATUS_UNSUCCESSFUL;
		}
	}

	/*
	 * This MUST be done after ofile creation, so that explicitly
	 * set timestamps can be remembered on the ofile.
	 */
	if (status == NT_STATUS_SUCCESS) {
		if ((rc = smb_set_open_timestamps(sr, of, created)) != 0) {
			smbsr_errno(sr, rc);
			status = sr->smb_error.status;
		}
	}

	if (status == NT_STATUS_SUCCESS) {
		if (smb_node_getattr(sr, node,  &op->fqi.fq_fattr) != 0) {
			smbsr_error(sr, NT_STATUS_INTERNAL_ERROR,
			    ERRDOS, ERROR_INTERNAL_ERROR);
			status = NT_STATUS_INTERNAL_ERROR;
		}
	}

	/*
	 * smb_fsop_unshrlock is a no-op if node is a directory
	 * smb_fsop_unshrlock is done in smb_ofile_close
	 */
	if (status != NT_STATUS_SUCCESS) {
		if (of == NULL) {
			smb_fsop_unshrlock(sr->user_cr, node, uniq_fid);
		} else {
			smb_ofile_close(of, 0);
			smb_ofile_release(of);
		}
		if (created)
			smb_delete_new_object(sr);
		smb_node_unlock(node);
		smb_node_dec_opening_count(node);
		smb_node_release(node);
		if (created)
			smb_node_unlock(dnode);
		smb_node_release(dnode);
		return (status);
	}

	/*
	 * Propagate the write-through mode from the open params
	 * to the node: see the notes in the function header.
	 */
	if (sr->sr_cfg->skc_sync_enable ||
	    (op->create_options & FILE_WRITE_THROUGH))
		node->flags |= NODE_FLAGS_WRITE_THROUGH;

	/*
	 * Set up the fileid and dosattr in open_param for response
	 */
	op->fileid = op->fqi.fq_fattr.sa_vattr.va_nodeid;
	op->dattr = op->fqi.fq_fattr.sa_dosattr;

	/*
	 * Set up the file type in open_param for the response
	 */
	op->ftype = SMB_FTYPE_DISK;
	sr->smb_fid = of->f_fid;
	sr->fid_ofile = of;

	if (smb_node_is_file(node)) {
		smb_oplock_acquire(sr, node, of);
		op->dsize = op->fqi.fq_fattr.sa_vattr.va_size;
	} else {
		/* directory or symlink */
		op->op_oplock_level = SMB_OPLOCK_NONE;
		op->dsize = 0;
	}

	smb_node_dec_opening_count(node);

	smb_node_unlock(node);
	if (created)
		smb_node_unlock(dnode);

	smb_node_release(node);
	smb_node_release(dnode);

	return (NT_STATUS_SUCCESS);
}
示例#7
0
/*
 * smb_open_subr
 *
 * Notes on write-through behaviour. It looks like pre-LM0.12 versions
 * of the protocol specify the write-through mode when a file is opened,
 * (SmbOpen, SmbOpenAndX) so the write calls (SmbWrite, SmbWriteAndClose,
 * SmbWriteAndUnlock) don't need to contain a write-through flag.
 *
 * With LM0.12, the open calls (SmbCreateAndX, SmbNtTransactCreate)
 * don't indicate which write-through mode to use. Instead the write
 * calls (SmbWriteAndX, SmbWriteRaw) specify the mode on a per call
 * basis.
 *
 * We don't care which open call was used to get us here, we just need
 * to ensure that the write-through mode flag is copied from the open
 * parameters to the node. We test the omode write-through flag in all
 * write functions.
 *
 * This function returns NT status codes.
 *
 * The following rules apply when processing a file open request:
 *
 * - Oplocks must be broken prior to share checking as the break may
 *   cause other clients to close the file, which would affect sharing
 *   checks.
 *
 * - Share checks must take place prior to access checks for correct
 * Windows semantics and to prevent unnecessary NFS delegation recalls.
 *
 * - Oplocks must be acquired after open to ensure the correct
 * synchronization with NFS delegation and FEM installation.
 *
 * DOS readonly bit rules
 *
 * 1. The creator of a readonly file can write to/modify the size of the file
 * using the original create fid, even though the file will appear as readonly
 * to all other fids and via a CIFS getattr call.
 * The readonly bit therefore cannot be set in the filesystem until the file
 * is closed (smb_ofile_close). It is accounted for via ofile and node flags.
 *
 * 2. A setinfo operation (using either an open fid or a path) to set/unset
 * readonly will be successful regardless of whether a creator of a readonly
 * file has an open fid (and has the special privilege mentioned in #1,
 * above).  I.e., the creator of a readonly fid holding that fid will no longer
 * have a special privilege.
 *
 * 3. The DOS readonly bit affects only data and some metadata.
 * The following metadata can be changed regardless of the readonly bit:
 * 	- security descriptors
 *	- DOS attributes
 *	- timestamps
 *
 * In the current implementation, the file size cannot be changed (except for
 * the exceptions in #1 and #2, above).
 *
 *
 * DOS attribute rules
 *
 * These rules are specific to creating / opening files and directories.
 * How the attribute value (specifically ZERO or FILE_ATTRIBUTE_NORMAL)
 * should be interpreted may differ in other requests.
 *
 * - An attribute value equal to ZERO or FILE_ATTRIBUTE_NORMAL means that the
 *   file's attributes should be cleared.
 * - If FILE_ATTRIBUTE_NORMAL is specified with any other attributes,
 *   FILE_ATTRIBUTE_NORMAL is ignored.
 *
 * 1. Creating a new file
 * - The request attributes + FILE_ATTRIBUTE_ARCHIVE are applied to the file.
 *
 * 2. Creating a new directory
 * - The request attributes + FILE_ATTRIBUTE_DIRECTORY are applied to the file.
 * - FILE_ATTRIBUTE_ARCHIVE does not get set.
 *
 * 3. Overwriting an existing file
 * - the request attributes are used as search attributes. If the existing
 *   file does not meet the search criteria access is denied.
 * - otherwise, applies attributes + FILE_ATTRIBUTE_ARCHIVE.
 *
 * 4. Opening an existing file or directory
 *    The request attributes are ignored.
 */
static uint32_t
smb_open_subr(smb_request_t *sr)
{
	boolean_t	created = B_FALSE;
	boolean_t	last_comp_found = B_FALSE;
	smb_node_t	*node = NULL;
	smb_node_t	*dnode = NULL;
	smb_node_t	*cur_node = NULL;
	smb_arg_open_t	*op = &sr->sr_open;
	int		rc;
	smb_ofile_t	*of;
	smb_attr_t	new_attr;
	int		max_requested = 0;
	uint32_t	max_allowed;
	uint32_t	status = NT_STATUS_SUCCESS;
	int		is_dir;
	smb_error_t	err;
	boolean_t	is_stream = B_FALSE;
	int		lookup_flags = SMB_FOLLOW_LINKS;
	uint32_t	uniq_fid;
	smb_pathname_t	*pn = &op->fqi.fq_path;
	smb_server_t	*sv = sr->sr_server;

	is_dir = (op->create_options & FILE_DIRECTORY_FILE) ? 1 : 0;

	/*
	 * If the object being created or opened is a directory
	 * the Disposition parameter must be one of FILE_CREATE,
	 * FILE_OPEN, or FILE_OPEN_IF
	 */
	if (is_dir) {
		if ((op->create_disposition != FILE_CREATE) &&
		    (op->create_disposition != FILE_OPEN_IF) &&
		    (op->create_disposition != FILE_OPEN)) {
			return (NT_STATUS_INVALID_PARAMETER);
		}
	}

	if (op->desired_access & MAXIMUM_ALLOWED) {
		max_requested = 1;
		op->desired_access &= ~MAXIMUM_ALLOWED;
	}
	op->desired_access = smb_access_generic_to_file(op->desired_access);

	if (sr->session->s_file_cnt >= SMB_SESSION_OFILE_MAX) {
		ASSERT(sr->uid_user);
		cmn_err(CE_NOTE, "smbsrv[%s\\%s]: TOO_MANY_OPENED_FILES",
		    sr->uid_user->u_domain, sr->uid_user->u_name);
		return (NT_STATUS_TOO_MANY_OPENED_FILES);
	}

	/* This must be NULL at this point */
	sr->fid_ofile = NULL;

	op->devstate = 0;

	switch (sr->tid_tree->t_res_type & STYPE_MASK) {
	case STYPE_DISKTREE:
	case STYPE_PRINTQ:
		break;

	case STYPE_IPC:
		/*
		 * Security descriptors for pipes are not implemented,
		 * so just setup a reasonable access mask.
		 */
		op->desired_access = (READ_CONTROL | SYNCHRONIZE |
		    FILE_READ_DATA | FILE_READ_ATTRIBUTES |
		    FILE_WRITE_DATA | FILE_APPEND_DATA);

		/*
		 * Limit the number of open pipe instances.
		 */
		if ((rc = smb_threshold_enter(&sv->sv_opipe_ct)) != 0) {
			status = RPC_NT_SERVER_TOO_BUSY;
			return (status);
		}

		/*
		 * No further processing for IPC, we need to either
		 * raise an exception or return success here.
		 */
		uniq_fid = SMB_UNIQ_FID();
		status = smb_opipe_open(sr, uniq_fid);
		smb_threshold_exit(&sv->sv_opipe_ct);
		return (status);

	default:
		return (NT_STATUS_BAD_DEVICE_TYPE);
	}

	smb_pathname_init(sr, pn, pn->pn_path);
	if (!smb_pathname_validate(sr, pn))
		return (sr->smb_error.status);

	if (strlen(pn->pn_path) >= SMB_MAXPATHLEN) {
		return (NT_STATUS_OBJECT_PATH_INVALID);
	}

	if (is_dir) {
		if (!smb_validate_dirname(sr, pn))
			return (sr->smb_error.status);
	} else {
		if (!smb_validate_object_name(sr, pn))
			return (sr->smb_error.status);
	}

	cur_node = op->fqi.fq_dnode ?
	    op->fqi.fq_dnode : sr->tid_tree->t_snode;

	/*
	 * if no path or filename are specified the stream should be
	 * created on cur_node
	 */
	if (!is_dir && !pn->pn_pname && !pn->pn_fname && pn->pn_sname) {
		/*
		 * Can't currently handle a stream on the tree root.
		 * If a stream is being opened return "not found", otherwise
		 * return "access denied".
		 */
		if (cur_node == sr->tid_tree->t_snode) {
			if (op->create_disposition == FILE_OPEN) {
				return (NT_STATUS_OBJECT_NAME_NOT_FOUND);
			}
			return (NT_STATUS_ACCESS_DENIED);
		}

		(void) snprintf(op->fqi.fq_last_comp,
		    sizeof (op->fqi.fq_last_comp),
		    "%s%s", cur_node->od_name, pn->pn_sname);

		op->fqi.fq_dnode = cur_node->n_dnode;
		smb_node_ref(op->fqi.fq_dnode);
	} else {
		rc = smb_pathname_reduce(sr, sr->user_cr, pn->pn_path,
		    sr->tid_tree->t_snode, cur_node, &op->fqi.fq_dnode,
		    op->fqi.fq_last_comp);
		if (rc != 0) {
			return (smb_errno2status(rc));
		}
	}

	/*
	 * If the access mask has only DELETE set (ignore
	 * FILE_READ_ATTRIBUTES), then assume that this
	 * is a request to delete the link (if a link)
	 * and do not follow links.  Otherwise, follow
	 * the link to the target.
	 */
	if ((op->desired_access & ~FILE_READ_ATTRIBUTES) == DELETE)
		lookup_flags &= ~SMB_FOLLOW_LINKS;

	rc = smb_fsop_lookup_name(sr, zone_kcred(), lookup_flags,
	    sr->tid_tree->t_snode, op->fqi.fq_dnode, op->fqi.fq_last_comp,
	    &op->fqi.fq_fnode);

	if (rc == 0) {
		last_comp_found = B_TRUE;
		/*
		 * Need the DOS attributes below, where we
		 * check the search attributes (sattr).
		 */
		op->fqi.fq_fattr.sa_mask = SMB_AT_DOSATTR;
		rc = smb_node_getattr(sr, op->fqi.fq_fnode, zone_kcred(),
		    NULL, &op->fqi.fq_fattr);
		if (rc != 0) {
			smb_node_release(op->fqi.fq_fnode);
			smb_node_release(op->fqi.fq_dnode);
			return (NT_STATUS_INTERNAL_ERROR);
		}
	} else if (rc == ENOENT) {
		last_comp_found = B_FALSE;
		op->fqi.fq_fnode = NULL;
		rc = 0;
	} else {
		smb_node_release(op->fqi.fq_dnode);
		return (smb_errno2status(rc));
	}


	/*
	 * The uniq_fid is a CIFS-server-wide unique identifier for an ofile
	 * which is used to uniquely identify open instances for the
	 * VFS share reservation and POSIX locks.
	 */

	uniq_fid = SMB_UNIQ_FID();

	if (last_comp_found) {

		node = op->fqi.fq_fnode;
		dnode = op->fqi.fq_dnode;

		if (!smb_node_is_file(node) && !smb_node_is_dir(node) &&
		    !smb_node_is_symlink(node)) {
			smb_node_release(node);
			smb_node_release(dnode);
			return (NT_STATUS_ACCESS_DENIED);
		}

		/*
		 * Reject this request if either:
		 * - the target IS a directory and the client requires that
		 *   it must NOT be (required by Lotus Notes)
		 * - the target is NOT a directory and client requires that
		 *   it MUST be.
		 */
		if (smb_node_is_dir(node)) {
			if (op->create_options & FILE_NON_DIRECTORY_FILE) {
				smb_node_release(node);
				smb_node_release(dnode);
				return (NT_STATUS_FILE_IS_A_DIRECTORY);
			}
		} else {
			if ((op->create_options & FILE_DIRECTORY_FILE) ||
			    (op->nt_flags & NT_CREATE_FLAG_OPEN_TARGET_DIR)) {
				smb_node_release(node);
				smb_node_release(dnode);
				return (NT_STATUS_NOT_A_DIRECTORY);
			}
		}

		/*
		 * No more open should be accepted when "Delete on close"
		 * flag is set.
		 */
		if (node->flags & NODE_FLAGS_DELETE_ON_CLOSE) {
			smb_node_release(node);
			smb_node_release(dnode);
			return (NT_STATUS_DELETE_PENDING);
		}

		/*
		 * Specified file already exists so the operation should fail.
		 */
		if (op->create_disposition == FILE_CREATE) {
			smb_node_release(node);
			smb_node_release(dnode);
			return (NT_STATUS_OBJECT_NAME_COLLISION);
		}

		/*
		 * Windows seems to check read-only access before file
		 * sharing check.
		 *
		 * Check to see if the file is currently readonly (irrespective
		 * of whether this open will make it readonly).
		 */
		if (SMB_PATHFILE_IS_READONLY(sr, node)) {
			/* Files data only */
			if (!smb_node_is_dir(node)) {
				if (op->desired_access & (FILE_WRITE_DATA |
				    FILE_APPEND_DATA)) {
					smb_node_release(node);
					smb_node_release(dnode);
					return (NT_STATUS_ACCESS_DENIED);
				}
			}
		}

		if ((op->create_disposition == FILE_SUPERSEDE) ||
		    (op->create_disposition == FILE_OVERWRITE_IF) ||
		    (op->create_disposition == FILE_OVERWRITE)) {

			if (!smb_sattr_check(op->fqi.fq_fattr.sa_dosattr,
			    op->dattr)) {
				smb_node_release(node);
				smb_node_release(dnode);
				return (NT_STATUS_ACCESS_DENIED);
			}

			if (smb_node_is_dir(node)) {
				smb_node_release(node);
				smb_node_release(dnode);
				return (NT_STATUS_ACCESS_DENIED);
			}
		}

		/* MS-FSA 2.1.5.1.2 */
		if (op->create_disposition == FILE_SUPERSEDE)
			op->desired_access |= DELETE;
		if ((op->create_disposition == FILE_OVERWRITE_IF) ||
		    (op->create_disposition == FILE_OVERWRITE))
			op->desired_access |= FILE_WRITE_DATA;

		status = smb_fsop_access(sr, sr->user_cr, node,
		    op->desired_access);
		if (status != NT_STATUS_SUCCESS) {
			smb_node_release(node);
			smb_node_release(dnode);

			/* SMB1 specific? NT_STATUS_PRIVILEGE_NOT_HELD */
			if (status == NT_STATUS_PRIVILEGE_NOT_HELD) {
				return (status);
			} else {
				return (NT_STATUS_ACCESS_DENIED);
			}
		}

		if (max_requested) {
			smb_fsop_eaccess(sr, sr->user_cr, node, &max_allowed);
			op->desired_access |= max_allowed;
		}
		/*
		 * According to MS "dochelp" mail in Mar 2015, any handle
		 * on which read or write access is granted implicitly
		 * gets "read attributes", even if it was not requested.
		 * This avoids unexpected access failures later that
		 * would happen if these were not granted.
		 */
		if ((op->desired_access & FILE_DATA_ALL) != 0) {
			op->desired_access |= (READ_CONTROL |
			    FILE_READ_ATTRIBUTES);
		}

		/*
		 * Oplock break is done prior to sharing checks as the break
		 * may cause other clients to close the file which would
		 * affect the sharing checks. This may block, so set the
		 * file opening count before oplock stuff.
		 */
		smb_node_inc_opening_count(node);
		smb_open_oplock_break(sr, node);

		smb_node_wrlock(node);

		/*
		 * Check for sharing violations
		 */
		status = smb_fsop_shrlock(sr->user_cr, node, uniq_fid,
		    op->desired_access, op->share_access);
		if (status == NT_STATUS_SHARING_VIOLATION) {
			smb_node_unlock(node);
			smb_node_dec_opening_count(node);
			smb_node_release(node);
			smb_node_release(dnode);
			return (status);
		}

		/*
		 * Go ahead with modifications as necessary.
		 */
		switch (op->create_disposition) {
		case FILE_SUPERSEDE:
		case FILE_OVERWRITE_IF:
		case FILE_OVERWRITE:
			op->dattr |= FILE_ATTRIBUTE_ARCHIVE;
			/* Don't apply readonly bit until smb_ofile_close */
			if (op->dattr & FILE_ATTRIBUTE_READONLY) {
				op->created_readonly = B_TRUE;
				op->dattr &= ~FILE_ATTRIBUTE_READONLY;
			}

			/*
			 * Truncate the file data here.
			 * We set alloc_size = op->dsize later,
			 * after we have an ofile.  See:
			 * smb_set_open_attributes
			 */
			bzero(&new_attr, sizeof (new_attr));
			new_attr.sa_dosattr = op->dattr;
			new_attr.sa_vattr.va_size = 0;
			new_attr.sa_mask = SMB_AT_DOSATTR | SMB_AT_SIZE;
			rc = smb_fsop_setattr(sr, sr->user_cr, node, &new_attr);
			if (rc != 0) {
				smb_fsop_unshrlock(sr->user_cr, node, uniq_fid);
				smb_node_unlock(node);
				smb_node_dec_opening_count(node);
				smb_node_release(node);
				smb_node_release(dnode);
				return (smb_errno2status(rc));
			}

			/*
			 * If file is being replaced, remove existing streams
			 */
			if (SMB_IS_STREAM(node) == 0) {
				status = smb_fsop_remove_streams(sr,
				    sr->user_cr, node);
				if (status != 0) {
					smb_fsop_unshrlock(sr->user_cr, node,
					    uniq_fid);
					smb_node_unlock(node);
					smb_node_dec_opening_count(node);
					smb_node_release(node);
					smb_node_release(dnode);
					return (status);
				}
			}

			op->action_taken = SMB_OACT_TRUNCATED;
			break;

		default:
			/*
			 * FILE_OPEN or FILE_OPEN_IF.
			 */
			/*
			 * Ignore any user-specified alloc_size for
			 * existing files, to avoid truncation in
			 * smb_set_open_attributes
			 */
			op->dsize = 0L;
			op->action_taken = SMB_OACT_OPENED;
			break;
		}
	} else {
		/* Last component was not found. */
		dnode = op->fqi.fq_dnode;

		if (is_dir == 0)
			is_stream = smb_is_stream_name(pn->pn_path);

		if ((op->create_disposition == FILE_OPEN) ||
		    (op->create_disposition == FILE_OVERWRITE)) {
			smb_node_release(dnode);
			return (NT_STATUS_OBJECT_NAME_NOT_FOUND);
		}

		if (pn->pn_fname && smb_is_invalid_filename(pn->pn_fname)) {
			smb_node_release(dnode);
			return (NT_STATUS_OBJECT_NAME_INVALID);
		}

		/*
		 * lock the parent dir node in case another create
		 * request to the same parent directory comes in.
		 */
		smb_node_wrlock(dnode);

		/* Don't apply readonly bit until smb_ofile_close */
		if (op->dattr & FILE_ATTRIBUTE_READONLY) {
			op->dattr &= ~FILE_ATTRIBUTE_READONLY;
			op->created_readonly = B_TRUE;
		}

		bzero(&new_attr, sizeof (new_attr));
		if ((op->crtime.tv_sec != 0) &&
		    (op->crtime.tv_sec != UINT_MAX)) {

			new_attr.sa_mask |= SMB_AT_CRTIME;
			new_attr.sa_crtime = op->crtime;
		}

		if (is_dir == 0) {
			op->dattr |= FILE_ATTRIBUTE_ARCHIVE;
			new_attr.sa_dosattr = op->dattr;
			new_attr.sa_vattr.va_type = VREG;
			new_attr.sa_vattr.va_mode = is_stream ? S_IRUSR :
			    S_IRUSR | S_IRGRP | S_IROTH |
			    S_IWUSR | S_IWGRP | S_IWOTH;
			new_attr.sa_mask |=
			    SMB_AT_DOSATTR | SMB_AT_TYPE | SMB_AT_MODE;

			/*
			 * We set alloc_size = op->dsize later,
			 * after we have an ofile.  See:
			 * smb_set_open_attributes
			 */

			rc = smb_fsop_create(sr, sr->user_cr, dnode,
			    op->fqi.fq_last_comp, &new_attr, &op->fqi.fq_fnode);

			if (rc != 0) {
				smb_node_unlock(dnode);
				smb_node_release(dnode);
				return (smb_errno2status(rc));
			}

			node = op->fqi.fq_fnode;
			smb_node_inc_opening_count(node);
			smb_node_wrlock(node);

			status = smb_fsop_shrlock(sr->user_cr, node, uniq_fid,
			    op->desired_access, op->share_access);

			if (status == NT_STATUS_SHARING_VIOLATION) {
				smb_node_unlock(node);
				smb_node_dec_opening_count(node);
				smb_delete_new_object(sr);
				smb_node_release(node);
				smb_node_unlock(dnode);
				smb_node_release(dnode);
				return (status);
			}
		} else {
			op->dattr |= FILE_ATTRIBUTE_DIRECTORY;
			new_attr.sa_dosattr = op->dattr;
			new_attr.sa_vattr.va_type = VDIR;
			new_attr.sa_vattr.va_mode = 0777;
			new_attr.sa_mask |=
			    SMB_AT_DOSATTR | SMB_AT_TYPE | SMB_AT_MODE;

			rc = smb_fsop_mkdir(sr, sr->user_cr, dnode,
			    op->fqi.fq_last_comp, &new_attr, &op->fqi.fq_fnode);
			if (rc != 0) {
				smb_node_unlock(dnode);
				smb_node_release(dnode);
				return (smb_errno2status(rc));
			}

			node = op->fqi.fq_fnode;
			smb_node_inc_opening_count(node);
			smb_node_wrlock(node);
		}

		created = B_TRUE;
		op->action_taken = SMB_OACT_CREATED;

		if (max_requested) {
			smb_fsop_eaccess(sr, sr->user_cr, node, &max_allowed);
			op->desired_access |= max_allowed;
		}
		/*
		 * We created created this object (we own it) so
		 * grant read/write attributes on this handle,
		 * even if that was not requested.  This avoids
		 * unexpected access failures later that would
		 * happen if these were not granted.
		 */
		op->desired_access |= (READ_CONTROL |
		    FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES);
	}

	status = NT_STATUS_SUCCESS;

	of = smb_ofile_open(sr, node, op, SMB_FTYPE_DISK, uniq_fid,
	    &err);
	if (of == NULL) {
		status = err.status;
	}

	/*
	 * We might have blocked in smb_ofile_open long enough so a
	 * tree disconnect might have happened.  In that case, we've
	 * just added an ofile to a tree that's disconnecting, and
	 * need to undo that to avoid interfering with tear-down of
	 * the tree connection.
	 */
	if (status == NT_STATUS_SUCCESS &&
	    !smb_tree_is_connected(sr->tid_tree)) {
		status = NT_STATUS_INVALID_PARAMETER;
	}

	/*
	 * This MUST be done after ofile creation, so that explicitly
	 * set timestamps can be remembered on the ofile, and the
	 * readonly flag will be stored "pending" on the node.
	 */
	if (status == NT_STATUS_SUCCESS) {
		if ((rc = smb_set_open_attributes(sr, of)) != 0) {
			status = smb_errno2status(rc);
		}
	}

	if (status == NT_STATUS_SUCCESS) {
		/*
		 * We've already done access checks above,
		 * and want this call to succeed even when
		 * !(desired_access & FILE_READ_ATTRIBUTES),
		 * so pass kcred here.
		 */
		op->fqi.fq_fattr.sa_mask = SMB_AT_ALL;
		rc = smb_node_getattr(sr, node, zone_kcred(), of,
		    &op->fqi.fq_fattr);
		if (rc != 0) {
			status = NT_STATUS_INTERNAL_ERROR;
		}
	}

	/*
	 * smb_fsop_unshrlock is a no-op if node is a directory
	 * smb_fsop_unshrlock is done in smb_ofile_close
	 */
	if (status != NT_STATUS_SUCCESS) {
		if (of == NULL) {
			smb_fsop_unshrlock(sr->user_cr, node, uniq_fid);
		} else {
			smb_ofile_close(of, 0);
			smb_ofile_release(of);
		}
		if (created)
			smb_delete_new_object(sr);
		smb_node_unlock(node);
		smb_node_dec_opening_count(node);
		smb_node_release(node);
		if (created)
			smb_node_unlock(dnode);
		smb_node_release(dnode);
		return (status);
	}

	/*
	 * Propagate the write-through mode from the open params
	 * to the node: see the notes in the function header.
	 */
	if (sr->sr_cfg->skc_sync_enable ||
	    (op->create_options & FILE_WRITE_THROUGH))
		node->flags |= NODE_FLAGS_WRITE_THROUGH;

	/*
	 * Set up the fileid and dosattr in open_param for response
	 */
	op->fileid = op->fqi.fq_fattr.sa_vattr.va_nodeid;
	op->dattr = op->fqi.fq_fattr.sa_dosattr;

	/*
	 * Set up the file type in open_param for the response
	 */
	op->ftype = SMB_FTYPE_DISK;
	sr->smb_fid = of->f_fid;
	sr->fid_ofile = of;

	if (smb_node_is_file(node)) {
		smb_oplock_acquire(sr, node, of);
		op->dsize = op->fqi.fq_fattr.sa_vattr.va_size;
	} else {
		/* directory or symlink */
		op->op_oplock_level = SMB_OPLOCK_NONE;
		op->dsize = 0;
	}

	smb_node_dec_opening_count(node);

	smb_node_unlock(node);
	if (created)
		smb_node_unlock(dnode);

	smb_node_release(node);
	smb_node_release(dnode);

	return (NT_STATUS_SUCCESS);
}
示例#8
0
smb_sdrc_t
smb2_read(smb_request_t *sr)
{
	smb_ofile_t *of = NULL;
	smb_vdb_t *vdb = NULL;
	struct mbuf *m = NULL;
	uint16_t StructSize;
	uint8_t Padding;
	uint8_t DataOff;
	uint32_t Length;
	uint64_t Offset;
	smb2fid_t smb2fid;
	uint32_t MinCount;
	uint32_t Channel;
	uint32_t Remaining;
	uint16_t ChanInfoOffset;
	uint16_t ChanInfoLength;
	uint32_t XferCount;
	uint32_t status;
	int rc = 0;

	/*
	 * SMB2 Read request
	 */
	rc = smb_mbc_decodef(
	    &sr->smb_data,
	    "wb.lqqqlllww",
	    &StructSize,		/* w */
	    &Padding,			/* b. */
	    &Length,			/* l */
	    &Offset,			/* q */
	    &smb2fid.persistent,	/* q */
	    &smb2fid.temporal,		/* q */
	    &MinCount,			/* l */
	    &Channel,			/* l */
	    &Remaining,			/* l */
	    &ChanInfoOffset,		/* w */
	    &ChanInfoLength);		/* w */
	if (rc)
		return (SDRC_ERROR);
	if (StructSize != 49)
		return (SDRC_ERROR);

	status = smb2sr_lookup_fid(sr, &smb2fid);
	if (status) {
		smb2sr_put_error(sr, status);
		return (SDRC_SUCCESS);
	}
	of = sr->fid_ofile;

	if (Length > smb2_max_rwsize) {
		smb2sr_put_error(sr, NT_STATUS_INVALID_PARAMETER);
		return (SDRC_SUCCESS);
	}
	if (MinCount > Length)
		MinCount = Length;

	/* This is automatically free'd. */
	vdb = smb_srm_zalloc(sr, sizeof (*vdb));
	vdb->vdb_tag = 0;
	vdb->vdb_uio.uio_iov = &vdb->vdb_iovec[0];
	vdb->vdb_uio.uio_iovcnt = MAX_IOVEC;
	vdb->vdb_uio.uio_resid = Length;
	vdb->vdb_uio.uio_loffset = (offset_t)Offset;
	vdb->vdb_uio.uio_segflg = UIO_SYSSPACE;
	vdb->vdb_uio.uio_extflg = UIO_COPY_DEFAULT;

	sr->raw_data.max_bytes = Length;
	m = smb_mbuf_allocate(&vdb->vdb_uio);

	switch (of->f_tree->t_res_type & STYPE_MASK) {
	case STYPE_DISKTREE:
		if (!smb_node_is_dir(of->f_node)) {
			/* Check for conflicting locks. */
			rc = smb_lock_range_access(sr, of->f_node,
			    Offset, Length, B_FALSE);
			if (rc) {
				rc = ERANGE;
				break;
			}
		}
		rc = smb_fsop_read(sr, of->f_cr, of->f_node, &vdb->vdb_uio);
		break;
	case STYPE_IPC:
		rc = smb_opipe_read(sr, &vdb->vdb_uio);
		break;
	default:
	case STYPE_PRINTQ:
		rc = EACCES;
		break;
	}

	/* How much data we moved. */
	XferCount = Length - vdb->vdb_uio.uio_resid;

	sr->raw_data.max_bytes = XferCount;
	smb_mbuf_trim(m, XferCount);
	MBC_ATTACH_MBUF(&sr->raw_data, m);

	/*
	 * Checking the error return _after_ dealing with
	 * the returned data so that if m was allocated,
	 * it will be free'd via sr->raw_data cleanup.
	 */
	if (rc) {
		smb2sr_put_errno(sr, rc);
		return (SDRC_SUCCESS);
	}

	/*
	 * SMB2 Read reply
	 */
	DataOff = SMB2_HDR_SIZE + 16;
	rc = smb_mbc_encodef(
	    &sr->reply,
	    "wb.lllC",
	    17,	/* StructSize */	/* w */
	    DataOff,			/* b. */
	    XferCount,			/* l */
	    0, /* DataRemaining */	/* l */
	    0, /* reserved */		/* l */
	    &sr->raw_data);		/* C */
	if (rc)
		return (SDRC_ERROR);

	mutex_enter(&of->f_mutex);
	of->f_seek_pos = Offset + XferCount;
	mutex_exit(&of->f_mutex);

	return (SDRC_SUCCESS);
}
/*
 * smb_nt_transact_notify_change
 *
 * This function is responsible for processing NOTIFY CHANGE requests.
 * Requests are stored in a global queue. This queue is processed when
 * a monitored directory is changed or client cancels one of its already
 * sent requests.
 */
smb_sdrc_t
smb_nt_transact_notify_change(struct smb_request *sr, struct smb_xa *xa)
{
	uint32_t		CompletionFilter;
	unsigned char		WatchTree;
	smb_node_t		*node;

	if (smb_mbc_decodef(&xa->req_setup_mb, "lwb",
	    &CompletionFilter, &sr->smb_fid, &WatchTree) != 0)
		return (SDRC_NOT_IMPLEMENTED);

	smbsr_lookup_file(sr);
	if (sr->fid_ofile == NULL) {
		smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid);
		return (SDRC_ERROR);
	}

	node = sr->fid_ofile->f_node;

	if (!smb_node_is_dir(node)) {
		/*
		 * Notify change requests are only valid on directories.
		 */
		smbsr_error(sr, NT_STATUS_NOT_A_DIRECTORY, 0, 0);
		return (SDRC_ERROR);
	}

	mutex_enter(&sr->sr_mutex);
	switch (sr->sr_state) {
	case SMB_REQ_STATE_ACTIVE:
		node->waiting_event++;
		node->flags |= NODE_FLAGS_NOTIFY_CHANGE;
		if ((node->flags & NODE_FLAGS_CHANGED) == 0) {
			sr->sr_ncr.nc_node = node;
			sr->sr_ncr.nc_flags = CompletionFilter;
			if (WatchTree)
				sr->sr_ncr.nc_flags |= NODE_FLAGS_WATCH_TREE;

			sr->sr_keep = B_TRUE;
			sr->sr_state = SMB_REQ_STATE_WAITING_EVENT;

			smb_slist_insert_tail(&smb_ncr_list, sr);

			/*
			 * Monitor events system-wide.
			 *
			 * XXX: smb_node_ref() and smb_node_release()
			 * take &node->n_lock.  May need alternate forms
			 * of these routines if node->n_lock is taken
			 * around calls to smb_fem_fcn_install() and
			 * smb_fem_fcn_uninstall().
			 */

			smb_fem_fcn_install(node);

			mutex_exit(&sr->sr_mutex);
			return (SDRC_SR_KEPT);
		} else {
			/* node already changed, reply immediately */
			if (--node->waiting_event == 0)
				node->flags &=
				    ~(NODE_FLAGS_NOTIFY_CHANGE |
				    NODE_FLAGS_CHANGED);
			mutex_exit(&sr->sr_mutex);
			return (SDRC_SUCCESS);
		}

	case SMB_REQ_STATE_CANCELED:
		mutex_exit(&sr->sr_mutex);
		smbsr_error(sr, NT_STATUS_CANCELLED, 0, 0);
		return (SDRC_ERROR);

	default:
		ASSERT(0);
		mutex_exit(&sr->sr_mutex);
		return (SDRC_SUCCESS);
	}
}
示例#10
0
smb_sdrc_t
smb_com_nt_create_andx(struct smb_request *sr)
{
	struct open_param	*op = &sr->arg.open;
	unsigned char		DirFlag;
	smb_attr_t		attr;
	smb_node_t		*node;
	int rc;

	if ((op->create_options & FILE_DELETE_ON_CLOSE) &&
	    !(op->desired_access & DELETE)) {
		smbsr_error(sr, NT_STATUS_INVALID_PARAMETER,
		    ERRDOS, ERRbadaccess);
		return (SDRC_ERROR);
	}

	if (op->create_disposition > FILE_MAXIMUM_DISPOSITION) {
		smbsr_error(sr, NT_STATUS_INVALID_PARAMETER,
		    ERRDOS, ERRbadaccess);
		return (SDRC_ERROR);
	}

	if (op->dattr & FILE_FLAG_WRITE_THROUGH)
		op->create_options |= FILE_WRITE_THROUGH;

	if (op->dattr & FILE_FLAG_DELETE_ON_CLOSE)
		op->create_options |= FILE_DELETE_ON_CLOSE;

	if (op->dattr & FILE_FLAG_BACKUP_SEMANTICS)
		op->create_options |= FILE_OPEN_FOR_BACKUP_INTENT;

	if (op->create_options & FILE_OPEN_FOR_BACKUP_INTENT)
		sr->user_cr = smb_user_getprivcred(sr->uid_user);

	if (op->rootdirfid == 0) {
		op->fqi.fq_dnode = sr->tid_tree->t_snode;
	} else {
		op->dir = smb_ofile_lookup_by_fid(sr->tid_tree,
		    (uint16_t)op->rootdirfid);
		if (op->dir == NULL) {
			smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
			    ERRDOS, ERRbadfid);
			return (SDRC_ERROR);
		}
		op->fqi.fq_dnode = op->dir->f_node;
	}

	op->op_oplock_levelII = B_TRUE;

	if (smb_common_open(sr) != NT_STATUS_SUCCESS)
		return (SDRC_ERROR);

	switch (sr->tid_tree->t_res_type & STYPE_MASK) {
	case STYPE_DISKTREE:
	case STYPE_PRINTQ:
		if (op->create_options & FILE_DELETE_ON_CLOSE)
			smb_ofile_set_delete_on_close(sr->fid_ofile);

		node = sr->fid_ofile->f_node;
		DirFlag = smb_node_is_dir(node) ? 1 : 0;
		if (smb_node_getattr(sr, node, &attr) != 0) {
			smbsr_error(sr, NT_STATUS_INTERNAL_ERROR,
			    ERRDOS, ERROR_INTERNAL_ERROR);
			return (SDRC_ERROR);
		}

		rc = smbsr_encode_result(sr, 34, 0, "bb.wbwlTTTTlqqwwbw",
		    34,
		    sr->andx_com,
		    0x67,
		    op->op_oplock_level,
		    sr->smb_fid,
		    op->action_taken,
		    &attr.sa_crtime,
		    &attr.sa_vattr.va_atime,
		    &attr.sa_vattr.va_mtime,
		    &attr.sa_vattr.va_ctime,
		    op->dattr & FILE_ATTRIBUTE_MASK,
		    attr.sa_allocsz,
		    attr.sa_vattr.va_size,
		    op->ftype,
		    op->devstate,
		    DirFlag,
		    0);
		break;

	case STYPE_IPC:
		rc = smbsr_encode_result(sr, 34, 0, "bb.wbwlqqqqlqqwwbw",
		    34,
		    sr->andx_com,
		    0x67,
		    0,
		    sr->smb_fid,
		    op->action_taken,
		    0LL,
		    0LL,
		    0LL,
		    0LL,
		    FILE_ATTRIBUTE_NORMAL,
		    0x1000LL,
		    0LL,
		    op->ftype,
		    op->devstate,
		    0,
		    0);
		break;

	default:
		smbsr_error(sr, NT_STATUS_INVALID_DEVICE_REQUEST,
		    ERRDOS, ERROR_INVALID_FUNCTION);
		return (SDRC_ERROR);
	}

	return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
}
示例#11
0
/*
 * smb_make_link
 *
 * Creating a hard link (adding an additional name) for a file.
 *
 * If the source and destination are identical, we go through all
 * the checks but we don't create a link.
 *
 * If the file is a symlink we create the hardlink on the target
 * of the symlink (i.e. use SMB_FOLLOW_LINKS when looking up src).
 * If the target of the symlink does not exist we fail with ENOENT.
 *
 * Returns NT status values.
 *
 * Similar to smb_common_rename() above.
 */
uint32_t
smb_make_link(smb_request_t *sr, smb_fqi_t *src_fqi, smb_fqi_t *dst_fqi)
{
	smb_node_t *tnode;
	char *path;
	int rc;

	tnode = sr->tid_tree->t_snode;
	path = dst_fqi->fq_path.pn_path;

	/* Cannnot create link on named stream */
	if (smb_is_stream_name(src_fqi->fq_path.pn_path) ||
	    smb_is_stream_name(dst_fqi->fq_path.pn_path)) {
		return (NT_STATUS_INVALID_PARAMETER);
	}

	/* The source node may already have been provided */
	if (src_fqi->fq_fnode) {
		smb_node_start_crit(src_fqi->fq_fnode, RW_READER);
		smb_node_ref(src_fqi->fq_fnode);
		smb_node_ref(src_fqi->fq_dnode);
	} else {
		/* lookup and validate src node */
		rc = smb_rename_lookup_src(sr);
		if (rc != 0)
			return (smb_rename_errno2status(rc));
	}

	/* Not valid to create hardlink for directory */
	if (smb_node_is_dir(src_fqi->fq_fnode)) {
		smb_rename_release_src(sr);
		return (NT_STATUS_FILE_IS_A_DIRECTORY);
	}

	/*
	 * Find the destination dnode and last component.
	 * May already be provided, i.e. when called via
	 * SMB1 trans2 setinfo.
	 */
	if (dst_fqi->fq_dnode) {
		smb_node_ref(dst_fqi->fq_dnode);
	} else {
		rc = smb_pathname_reduce(sr, sr->user_cr, path, tnode, tnode,
		    &dst_fqi->fq_dnode, dst_fqi->fq_last_comp);
		if (rc != 0) {
			smb_rename_release_src(sr);
			return (smb_rename_errno2status(rc));
		}
	}

	/* If CI name match in same directory, we're done */
	if ((src_fqi->fq_dnode == dst_fqi->fq_dnode) &&
	    (smb_strcasecmp(src_fqi->fq_fnode->od_name,
	    dst_fqi->fq_last_comp, 0) == 0)) {
		smb_rename_release_src(sr);
		smb_node_release(dst_fqi->fq_dnode);
		return (0);
	}

	if (smb_is_invalid_filename(dst_fqi->fq_last_comp)) {
		smb_rename_release_src(sr);
		smb_node_release(dst_fqi->fq_dnode);
		return (NT_STATUS_OBJECT_NAME_INVALID);
	}

	/* Lookup the destination node. It MUST NOT exist. */
	rc = smb_fsop_lookup(sr, sr->user_cr, 0, tnode,
	    dst_fqi->fq_dnode, dst_fqi->fq_last_comp, &dst_fqi->fq_fnode);
	if (rc == 0) {
		smb_node_release(dst_fqi->fq_fnode);
		rc = EEXIST;
	}
	if (rc != ENOENT) {
		smb_rename_release_src(sr);
		smb_node_release(dst_fqi->fq_dnode);
		return (smb_rename_errno2status(rc));
	}

	rc = smb_fsop_link(sr, sr->user_cr, src_fqi->fq_fnode,
	    dst_fqi->fq_dnode, dst_fqi->fq_last_comp);

	if (rc == 0) {
		smb_node_notify_change(dst_fqi->fq_dnode,
		    FILE_ACTION_ADDED, dst_fqi->fq_last_comp);
	}

	smb_rename_release_src(sr);
	smb_node_release(dst_fqi->fq_dnode);
	return (smb_rename_errno2status(rc));
}
smb_sdrc_t
smb_nt_transact_create(smb_request_t *sr, smb_xa_t *xa)
{
	struct open_param *op = &sr->arg.open;
	uint8_t			DirFlag;
	smb_attr_t		attr;
	smb_ofile_t		*of;
	int			rc;

	if ((op->create_options & FILE_DELETE_ON_CLOSE) &&
	    !(op->desired_access & DELETE)) {
		smbsr_error(sr, NT_STATUS_INVALID_PARAMETER,
		    ERRDOS, ERRbadaccess);
		return (SDRC_ERROR);
	}

	if (op->create_disposition > FILE_MAXIMUM_DISPOSITION) {
		smbsr_error(sr, NT_STATUS_INVALID_PARAMETER,
		    ERRDOS, ERRbadaccess);
		return (SDRC_ERROR);
	}

	if (op->dattr & FILE_FLAG_WRITE_THROUGH)
		op->create_options |= FILE_WRITE_THROUGH;

	if (op->dattr & FILE_FLAG_DELETE_ON_CLOSE)
		op->create_options |= FILE_DELETE_ON_CLOSE;

	if (op->dattr & FILE_FLAG_BACKUP_SEMANTICS)
		op->create_options |= FILE_OPEN_FOR_BACKUP_INTENT;

	if (op->create_options & FILE_OPEN_FOR_BACKUP_INTENT)
		sr->user_cr = smb_user_getprivcred(sr->uid_user);

	if (op->rootdirfid == 0) {
		op->fqi.fq_dnode = sr->tid_tree->t_snode;
	} else {
		op->dir = smb_ofile_lookup_by_fid(sr, (uint16_t)op->rootdirfid);
		if (op->dir == NULL) {
			smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
			    ERRDOS, ERRbadfid);
			return (SDRC_ERROR);
		}
		op->fqi.fq_dnode = op->dir->f_node;
	}

	op->op_oplock_levelII = B_TRUE;

	if (smb_common_open(sr) != NT_STATUS_SUCCESS)
		return (SDRC_ERROR);

	/*
	 * NB: after the above smb_common_open() success,
	 * we have a handle allocated (sr->fid_ofile).
	 * If we don't return success, we must close it.
	 */
	of = sr->fid_ofile;

	switch (sr->tid_tree->t_res_type & STYPE_MASK) {
	case STYPE_DISKTREE:
	case STYPE_PRINTQ:
		if (op->create_options & FILE_DELETE_ON_CLOSE)
			smb_ofile_set_delete_on_close(of);

		DirFlag = smb_node_is_dir(of->f_node) ? 1 : 0;
		bzero(&attr, sizeof (attr));
		attr.sa_mask = SMB_AT_ALL;
		rc = smb_node_getattr(sr, of->f_node, of->f_cr, of, &attr);
		if (rc != 0) {
			smbsr_errno(sr, rc);
			goto errout;
		}

		(void) smb_mbc_encodef(&xa->rep_param_mb, "b.wllTTTTlqqwwb",
		    op->op_oplock_level,
		    sr->smb_fid,
		    op->action_taken,
		    0,	/* EaErrorOffset */
		    &attr.sa_crtime,
		    &attr.sa_vattr.va_atime,
		    &attr.sa_vattr.va_mtime,
		    &attr.sa_vattr.va_ctime,
		    op->dattr & FILE_ATTRIBUTE_MASK,
		    attr.sa_allocsz,
		    attr.sa_vattr.va_size,
		    op->ftype,
		    op->devstate,
		    DirFlag);
		break;

	case STYPE_IPC:
		bzero(&attr, sizeof (smb_attr_t));
		(void) smb_mbc_encodef(&xa->rep_param_mb, "b.wllTTTTlqqwwb",
		    0,
		    sr->smb_fid,
		    op->action_taken,
		    0,	/* EaErrorOffset */
		    &attr.sa_crtime,
		    &attr.sa_vattr.va_atime,
		    &attr.sa_vattr.va_mtime,
		    &attr.sa_vattr.va_ctime,
		    op->dattr,
		    0x1000LL,
		    0LL,
		    op->ftype,
		    op->devstate,
		    0);
		break;

	default:
		smbsr_error(sr, NT_STATUS_INVALID_DEVICE_REQUEST,
		    ERRDOS, ERROR_INVALID_FUNCTION);
		goto errout;
	}
	return (SDRC_SUCCESS);

errout:
	smb_ofile_close(of, 0);
	return (SDRC_ERROR);
}
示例#13
0
smb_sdrc_t
smb_com_check_directory(smb_request_t *sr)
{
	int rc;
	smb_fqi_t *fqi;
	smb_node_t *tnode;
	smb_node_t *node;
	char *path;
	smb_pathname_t *pn;

	if (STYPE_ISIPC(sr->tid_tree->t_res_type)) {
		smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRDOS,
		    ERROR_ACCESS_DENIED);
		return (SDRC_ERROR);
	}

	fqi = &sr->arg.dirop.fqi;
	pn = &fqi->fq_path;

	if (pn->pn_path[0] == '\0') {
		rc = smbsr_encode_empty_result(sr);
		return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
	}

	smb_pathname_init(sr, pn, pn->pn_path);
	if (!smb_pathname_validate(sr, pn) ||
	    !smb_validate_dirname(sr, pn)) {
		return (SDRC_ERROR);
	}

	path = pn->pn_path;
	tnode = sr->tid_tree->t_snode;

	rc = smb_pathname_reduce(sr, sr->user_cr, path, tnode, tnode,
	    &fqi->fq_dnode, fqi->fq_last_comp);
	if (rc != 0) {
		smbsr_errno(sr, rc);
		return (SDRC_ERROR);
	}

	rc = smb_fsop_lookup(sr, sr->user_cr, SMB_FOLLOW_LINKS,
	    tnode, fqi->fq_dnode, fqi->fq_last_comp, &fqi->fq_fnode);
	smb_node_release(fqi->fq_dnode);
	if (rc != 0) {
		if (rc == ENOENT)
			smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND,
			    ERRDOS, ERROR_PATH_NOT_FOUND);
		else
			smbsr_errno(sr, rc);
		return (SDRC_ERROR);
	}

	node = fqi->fq_fnode;
	if (!smb_node_is_dir(node)) {
		smbsr_error(sr, NT_STATUS_NOT_A_DIRECTORY,
		    ERRDOS, ERROR_PATH_NOT_FOUND);
		smb_node_release(node);
		return (SDRC_ERROR);
	}

	if ((sr->smb_flg2 & SMB_FLAGS2_DFS) && smb_node_is_dfslink(node)) {
		smbsr_error(sr, NT_STATUS_PATH_NOT_COVERED, ERRSRV, ERRbadpath);
		smb_node_release(node);
		return (SDRC_ERROR);
	}

	rc = smb_fsop_access(sr, sr->user_cr, node, FILE_TRAVERSE);

	smb_node_release(node);

	if (rc != 0) {
		smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
		    ERRDOS, ERROR_ACCESS_DENIED);
		return (SDRC_ERROR);
	}

	rc = smbsr_encode_empty_result(sr);
	return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
}
示例#14
0
smb_sdrc_t
smb_com_delete_directory(smb_request_t *sr)
{
	int rc;
	uint32_t flags = 0;
	smb_fqi_t *fqi;
	smb_node_t *tnode;

	if (!STYPE_ISDSK(sr->tid_tree->t_res_type)) {
		smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
		    ERRDOS, ERROR_ACCESS_DENIED);
		return (SDRC_ERROR);
	}

	fqi = &sr->arg.dirop.fqi;
	tnode = sr->tid_tree->t_snode;

	smb_pathname_init(sr, &fqi->fq_path, fqi->fq_path.pn_path);
	if (!smb_pathname_validate(sr, &fqi->fq_path) ||
	    !smb_validate_dirname(sr, &fqi->fq_path)) {
		return (SDRC_ERROR);
	}

	rc = smb_pathname_reduce(sr, sr->user_cr, fqi->fq_path.pn_path,
	    tnode, tnode, &fqi->fq_dnode, fqi->fq_last_comp);

	if (rc != 0) {
		smbsr_errno(sr, rc);
		return (SDRC_ERROR);
	}

	rc = smb_fsop_lookup(sr, sr->user_cr, SMB_FOLLOW_LINKS,
	    tnode, fqi->fq_dnode, fqi->fq_last_comp, &fqi->fq_fnode);
	if (rc != 0) {
		if (rc == ENOENT)
			smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND,
			    ERRDOS, ERROR_FILE_NOT_FOUND);
		else
			smbsr_errno(sr, rc);
		smb_node_release(fqi->fq_dnode);
		return (SDRC_ERROR);
	}

	/*
	 * Delete should fail if this is the root of a share
	 * or a DFS link
	 */
	if ((fqi->fq_fnode == tnode) || smb_node_is_dfslink(fqi->fq_fnode)) {
		smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
		    ERRDOS, ERROR_ACCESS_DENIED);
		smb_node_release(fqi->fq_dnode);
		smb_node_release(fqi->fq_fnode);
		return (SDRC_ERROR);
	}

	if (!smb_node_is_dir(fqi->fq_fnode)) {
		smbsr_error(sr, NT_STATUS_NOT_A_DIRECTORY,
		    ERRDOS, ERROR_PATH_NOT_FOUND);
		smb_node_release(fqi->fq_dnode);
		smb_node_release(fqi->fq_fnode);
		return (SDRC_ERROR);
	}

	/*
	 * Using kcred because we just want the DOS attrs
	 * and don't want access errors for this.
	 */
	fqi->fq_fattr.sa_mask = SMB_AT_DOSATTR;
	rc = smb_node_getattr(sr, fqi->fq_fnode, zone_kcred(), NULL,
	    &fqi->fq_fattr);
	if (rc != 0) {
		smbsr_errno(sr, rc);
		smb_node_release(fqi->fq_dnode);
		smb_node_release(fqi->fq_fnode);
		return (SDRC_ERROR);
	}

	if ((fqi->fq_fattr.sa_dosattr & FILE_ATTRIBUTE_READONLY) ||
	    (smb_fsop_access(sr, sr->user_cr, fqi->fq_fnode, DELETE)
	    != NT_STATUS_SUCCESS)) {
		smbsr_error(sr, NT_STATUS_CANNOT_DELETE,
		    ERRDOS, ERROR_ACCESS_DENIED);
		smb_node_release(fqi->fq_dnode);
		smb_node_release(fqi->fq_fnode);
		return (SDRC_ERROR);
	}

	if (SMB_TREE_SUPPORTS_CATIA(sr))
		flags |= SMB_CATIA;

	rc = smb_fsop_rmdir(sr, sr->user_cr, fqi->fq_dnode,
	    fqi->fq_fnode->od_name, flags);

	smb_node_release(fqi->fq_fnode);
	smb_node_release(fqi->fq_dnode);

	if (rc != 0) {
		if (rc == EEXIST)
			smbsr_error(sr, NT_STATUS_DIRECTORY_NOT_EMPTY,
			    ERRDOS, ERROR_DIR_NOT_EMPTY);
		else
			smbsr_errno(sr, rc);
		return (SDRC_ERROR);
	}

	rc = smbsr_encode_empty_result(sr);
	return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
}