receiver.c - android_external_rsync - Gitiles

 /* -*- c-file-style: "linux" -*-

    Copyright (C) 1996-2000 by Andrew Tridgell
    Copyright (C) Paul Mackerras 1996

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

 #include "rsync.h"

 extern int verbose;
 extern int recurse;
 extern int delete_mode;
 extern int delete_after;
 extern int max_delete;
 extern int csum_length;
 extern struct stats stats;
 extern int dry_run;
 extern int am_server;
 extern int relative_paths;
 extern int preserve_hard_links;
 extern int preserve_perms;
 extern int cvs_exclude;
 extern int io_error;
 extern char *tmpdir;
 extern char *compare_dest;
 extern int make_backups;
 extern int do_progress;
 extern char *backup_dir;
 extern char *backup_suffix;
 extern int backup_suffix_len;
 extern int cleanup_got_literal;
 extern int module_id;
 extern int ignore_errors;
 extern int orig_umask;
 extern int keep_partial;

 static void delete_one(char *fn, int is_dir)
 {
 	if (!is_dir) {
 		if (robust_unlink(fn) != 0) {
 			rprintf(FERROR, "delete_one: unlink %s failed: %s\n",
 				full_fname(fn), strerror(errno));
 		} else if (verbose) {
 			rprintf(FINFO, "deleting %s\n", fn);
 		}
 	} else {
 		if (do_rmdir(fn) != 0) {
 			if (errno != ENOTEMPTY && errno != EEXIST) {
 				rprintf(FERROR, "delete_one: rmdir %s failed: %s\n",
 					full_fname(fn), strerror(errno));
 			}
 		} else if (verbose) {
 			rprintf(FINFO, "deleting directory %s\n", fn);
 		}
 	}
 }


 static int is_backup_file(char *fn)
 {
 	int k = strlen(fn) - backup_suffix_len;
 	return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 }


 /* This deletes any files on the receiving side that are not present
  * on the sending side. */
 void delete_files(struct file_list *flist)
 {
 	struct file_list *local_file_list;
 	int i, j;
 	char *argv[1], fbuf[MAXPATHLEN];
 	static int deletion_count;

 	if (cvs_exclude)
 		add_cvs_excludes();

 	if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
 		rprintf(FINFO,"IO error encountered - skipping file deletion\n");
 		return;
 	}

 	for (j = 0; j < flist->count; j++) {
 		if (!(flist->files[j]->flags & FLAG_TOP_DIR)
 		    || !S_ISDIR(flist->files[j]->mode))
 			continue;

 		argv[0] = f_name_to(flist->files[j], fbuf);

 		if (!(local_file_list = send_file_list(-1, 1, argv)))
 			continue;

 		if (verbose > 1)
 			rprintf(FINFO, "deleting in %s\n", fbuf);

 		for (i = local_file_list->count-1; i >= 0; i--) {
 			if (max_delete && deletion_count > max_delete)
 				break;
 			if (!local_file_list->files[i]->basename)
 				continue;
 			if (flist_find(flist,local_file_list->files[i]) < 0) {
 				char *f = f_name(local_file_list->files[i]);
 				if (make_backups && (backup_dir || !is_backup_file(f))) {
 					(void) make_backup(f);
 					if (verbose)
 						rprintf(FINFO, "deleting %s\n", f);
 				} else {
 					int mode = local_file_list->files[i]->mode;
 					delete_one(f, S_ISDIR(mode) != 0);
 				}
 				deletion_count++;
 			}
 		}
 		flist_free(local_file_list);
 	}
 }


 /*
  * get_tmpname() - create a tmp filename for a given filename
  *
  *   If a tmpdir is defined, use that as the directory to
  *   put it in.  Otherwise, the tmp filename is in the same
  *   directory as the given name.  Note that there may be no
  *   directory at all in the given name!
  *
  *   The tmp filename is basically the given filename with a
  *   dot prepended, and .XXXXXX appended (for mkstemp() to
  *   put its unique gunk in).  Take care to not exceed
  *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
  *   the basename basically becomes 8 chars longer. In that
  *   case, the original name is shortened sufficiently to
  *   make it all fit.
  *
  *   Of course, there's no real reason for the tmp name to
  *   look like the original, except to satisfy us humans.
  *   As long as it's unique, rsync will work.
  */

 static int get_tmpname(char *fnametmp, char *fname)
 {
 	char *f;
 	int     length = 0;
 	int	maxname;

 	if (tmpdir) {
 		/* Note: this can't overflow, so the return value is safe */
 		length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
 		fnametmp[length++] = '/';
 		fnametmp[length] = '\0';	/* always NULL terminated */
 	}

 	if ((f = strrchr(fname, '/')) != NULL) {
 		++f;
 		if (!tmpdir) {
 			length = f - fname;
 			/* copy up to and including the slash */
 			strlcpy(fnametmp, fname, length + 1);
 		}
 	} else
 		f = fname;
 	fnametmp[length++] = '.';
 	fnametmp[length] = '\0';		/* always NULL terminated */

 	maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);

 	if (maxname < 1) {
 		rprintf(FERROR, "temporary filename too long: %s\n", fname);
 		fnametmp[0] = '\0';
 		return 0;
 	}

 	strlcpy(fnametmp + length, f, maxname);
 	strcat(fnametmp + length, ".XXXXXX");

 	return 1;
 }


 static int receive_data(int f_in,struct map_struct *mapbuf,int fd,char *fname,
 			OFF_T total_size)
 {
 	int i;
 	struct sum_struct sum;
 	unsigned int len;
 	OFF_T offset = 0;
 	OFF_T offset2;
 	char *data;
 	static char file_sum1[MD4_SUM_LENGTH];
 	static char file_sum2[MD4_SUM_LENGTH];
 	char *map=NULL;

 	read_sum_head(f_in, &sum);

 	sum_init();

 	while ((i = recv_token(f_in, &data)) != 0) {
 		if (do_progress)
 			show_progress(offset, total_size);

 		if (i > 0) {
 			if (verbose > 3) {
 				rprintf(FINFO,"data recv %d at %.0f\n",
 					i,(double)offset);
 			}

 			stats.literal_data += i;
 			cleanup_got_literal = 1;

 			sum_update(data,i);

 			if (fd != -1 && write_file(fd,data,i) != i) {
 				rprintf(FERROR, "write failed on %s: %s\n",
 					full_fname(fname), strerror(errno));
 				exit_cleanup(RERR_FILEIO);
 			}
 			offset += i;
 			continue;
 		}

 		i = -(i+1);
 		offset2 = i*(OFF_T)sum.blength;
 		len = sum.blength;
 		if (i == (int) sum.count-1 && sum.remainder != 0)
 			len = sum.remainder;

 		stats.matched_data += len;

 		if (verbose > 3)
 			rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
 				i,len,(double)offset2,(double)offset);

 		if (mapbuf) {
 			map = map_ptr(mapbuf,offset2,len);

 			see_token(map, len);
 			sum_update(map,len);
 		}

 		if (fd != -1 && write_file(fd,map,len) != (int) len) {
 			rprintf(FERROR, "write failed on %s: %s\n",
 				full_fname(fname), strerror(errno));
 			exit_cleanup(RERR_FILEIO);
 		}
 		offset += len;
 	}

 	flush_write_file(fd);

 	if (do_progress)
 		end_progress(total_size);

 	if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 		rprintf(FERROR, "write failed on %s: %s\n",
 			full_fname(fname), strerror(errno));
 		exit_cleanup(RERR_FILEIO);
 	}

 	sum_end(file_sum1);

 	read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
 	if (verbose > 2) {
 		rprintf(FINFO,"got file_sum\n");
 	}
 	if (fd != -1 && memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
 		return 0;
 	}
 	return 1;
 }


 /**
  * main routine for receiver process.
  *
  * Receiver process runs on the same host as the generator process. */
 int recv_files(int f_in,struct file_list *flist,char *local_name)
 {
 	int fd1,fd2;
 	STRUCT_STAT st;
 	char *fname, fbuf[MAXPATHLEN];
 	char template[MAXPATHLEN];
 	char fnametmp[MAXPATHLEN];
 	char *fnamecmp;
 	char fnamecmpbuf[MAXPATHLEN];
 	struct map_struct *mapbuf;
 	int i;
 	struct file_struct *file;
 	int phase=0;
 	int recv_ok;
 	struct stats initial_stats;

 	if (verbose > 2) {
 		rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
 	}

 	if (flist->hlink_pool) {
 		pool_destroy(flist->hlink_pool);
 		flist->hlink_pool = NULL;
 	}

 	while (1) {
 		cleanup_disable();

 		i = read_int(f_in);
 		if (i == -1) {
 			if (phase == 0) {
 				phase++;
 				csum_length = SUM_LENGTH;
 				if (verbose > 2)
 					rprintf(FINFO,"recv_files phase=%d\n",phase);
 				send_msg(MSG_DONE, "", 0);
 				continue;
 			}
 			break;
 		}

 		if (i < 0 || i >= flist->count) {
 			rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
 				i, flist->count);
 			exit_cleanup(RERR_PROTOCOL);
 		}

 		file = flist->files[i];

 		stats.current_file_index = i;
 		stats.num_transferred_files++;
 		stats.total_transferred_size += file->length;
 		cleanup_got_literal = 0;

 		if (local_name)
 			fname = local_name;
 		else
 			fname = f_name_to(file, fbuf);

 		if (dry_run) {
 			if (!am_server && verbose) {	/* log transfer */
 				rprintf(FINFO, "%s\n", fname);
 			}
 			continue;
 		}

 		initial_stats = stats;

 		if (verbose > 2)
 			rprintf(FINFO,"recv_files(%s)\n",fname);

 		fnamecmp = fname;

 		/* open the file */
 		fd1 = do_open(fnamecmp, O_RDONLY, 0);

 		if (fd1 == -1 && compare_dest != NULL) {
 			/* try the file at compare_dest instead */
 			pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 				 compare_dest, fname);
 			fnamecmp = fnamecmpbuf;
 			fd1 = do_open(fnamecmp, O_RDONLY, 0);
 		}

 		if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
 			rprintf(FERROR, "fstat %s failed: %s\n",
 				full_fname(fnamecmp), strerror(errno));
 			receive_data(f_in,NULL,-1,NULL,file->length);
 			close(fd1);
 			continue;
 		}

 		if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 			/* this special handling for directories
 			 * wouldn't be necessary if robust_rename()
 			 * and the underlying robust_unlink could cope
 			 * with directories
 			 */
 			rprintf(FERROR,"recv_files: %s is a directory\n",
 				full_fname(fnamecmp));
 			receive_data(f_in, NULL, -1, NULL, file->length);
 			close(fd1);
 			continue;
 		}

 		if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 			close(fd1);
 			fd1 = -1;
 			mapbuf = NULL;
 		}

 		if (fd1 != -1 && !preserve_perms) {
 			/* if the file exists already and we aren't preserving
 			 * permissions then act as though the remote end sent
 			 * us the file permissions we already have */
 			file->mode = st.st_mode;
 		}

 		if (fd1 != -1 && st.st_size > 0) {
 			mapbuf = map_file(fd1,st.st_size);
 			if (verbose > 2)
 				rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
 		} else
 			mapbuf = NULL;

 		if (!get_tmpname(fnametmp,fname)) {
 			if (mapbuf) unmap_file(mapbuf);
 			if (fd1 != -1) close(fd1);
 			continue;
 		}

 		strlcpy(template, fnametmp, sizeof template);

 		/* we initially set the perms without the
 		 * setuid/setgid bits to ensure that there is no race
 		 * condition. They are then correctly updated after
 		 * the lchown. Thanks to snabb@epipe.fi for pointing
 		 * this out.  We also set it initially without group
 		 * access because of a similar race condition. */
 		fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);

 		/* in most cases parent directories will already exist
 		 * because their information should have been previously
 		 * transferred, but that may not be the case with -R */
 		if (fd2 == -1 && relative_paths && errno == ENOENT &&
 		    create_directory_path(fnametmp, orig_umask) == 0) {
 			strlcpy(fnametmp, template, sizeof fnametmp);
 			fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 		}
 		if (fd2 == -1) {
 			rprintf(FERROR, "mkstemp %s failed: %s\n",
 				full_fname(fnametmp), strerror(errno));
 			receive_data(f_in,mapbuf,-1,NULL,file->length);
 			if (mapbuf) unmap_file(mapbuf);
 			if (fd1 != -1) close(fd1);
 			continue;
 		}

 		cleanup_set(fnametmp, fname, file, mapbuf, fd1, fd2);

 		if (!am_server && verbose) {	/* log transfer */
 			rprintf(FINFO, "%s\n", fname);
 		}

 		/* recv file data */
 		recv_ok = receive_data(f_in,mapbuf,fd2,fname,file->length);

 		log_recv(file, &initial_stats);

 		if (mapbuf) unmap_file(mapbuf);
 		if (fd1 != -1) {
 			close(fd1);
 		}
 		if (close(fd2) < 0) {
 			rprintf(FERROR, "close failed on %s: %s\n",
 				full_fname(fnametmp), strerror(errno));
 			exit_cleanup(RERR_FILEIO);
 		}

 		if (verbose > 2)
 			rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);

 		if (recv_ok || keep_partial)
 			finish_transfer(fname, fnametmp, file, recv_ok);
 		else
 			do_unlink(fnametmp);

 		cleanup_disable();

 		if (!recv_ok) {
 			if (csum_length == SUM_LENGTH) {
 				rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
 					full_fname(fname));
 			} else {
 				char buf[4];
 				if (verbose > 1)
 					rprintf(FINFO,"redoing %s(%d)\n",fname,i);
 				SIVAL(buf, 0, i);
 				send_msg(MSG_REDO, buf, 4);
 			}
 		}
 	}

 	if (delete_after && recurse && delete_mode && !local_name
 	    && flist->count > 0)
 		delete_files(flist);

 	if (verbose > 2)
 		rprintf(FINFO,"recv_files finished\n");

 	return 0;
 }
	/* -- c-file-style: "linux" --

	Copyright (C) 1996-2000 by Andrew Tridgell
	Copyright (C) Paul Mackerras 1996

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*/

	#include "rsync.h"

	extern int verbose;
	extern int recurse;
	extern int delete_mode;
	extern int delete_after;
	extern int max_delete;
	extern int csum_length;
	extern struct stats stats;
	extern int dry_run;
	extern int am_server;
	extern int relative_paths;
	extern int preserve_hard_links;
	extern int preserve_perms;
	extern int cvs_exclude;
	extern int io_error;
	extern char *tmpdir;
	extern char *compare_dest;
	extern int make_backups;
	extern int do_progress;
	extern char *backup_dir;
	extern char *backup_suffix;
	extern int backup_suffix_len;
	extern int cleanup_got_literal;
	extern int module_id;
	extern int ignore_errors;
	extern int orig_umask;
	extern int keep_partial;

	static void delete_one(char *fn, int is_dir)
	{
	if (!is_dir) {
	if (robust_unlink(fn) != 0) {
	rprintf(FERROR, "delete_one: unlink %s failed: %s\n",
	full_fname(fn), strerror(errno));
	} else if (verbose) {
	rprintf(FINFO, "deleting %s\n", fn);
	}
	} else {
	if (do_rmdir(fn) != 0) {
	if (errno != ENOTEMPTY && errno != EEXIST) {
	rprintf(FERROR, "delete_one: rmdir %s failed: %s\n",
	full_fname(fn), strerror(errno));
	}
	} else if (verbose) {
	rprintf(FINFO, "deleting directory %s\n", fn);
	}
	}
	}


	static int is_backup_file(char *fn)
	{
	int k = strlen(fn) - backup_suffix_len;
	return k > 0 && strcmp(fn+k, backup_suffix) == 0;
	}


	/* This deletes any files on the receiving side that are not present
	* on the sending side. */
	void delete_files(struct file_list *flist)
	{
	struct file_list *local_file_list;
	int i, j;
	char *argv[1], fbuf[MAXPATHLEN];
	static int deletion_count;

	if (cvs_exclude)
	add_cvs_excludes();

	if (io_error && !(lp_ignore_errors(module_id) \|\| ignore_errors)) {
	rprintf(FINFO,"IO error encountered - skipping file deletion\n");
	return;
	}

	for (j = 0; j < flist->count; j++) {
	if (!(flist->files[j]->flags & FLAG_TOP_DIR)
	\|\| !S_ISDIR(flist->files[j]->mode))
	continue;

	argv[0] = f_name_to(flist->files[j], fbuf);

	if (!(local_file_list = send_file_list(-1, 1, argv)))
	continue;

	if (verbose > 1)
	rprintf(FINFO, "deleting in %s\n", fbuf);

	for (i = local_file_list->count-1; i >= 0; i--) {
	if (max_delete && deletion_count > max_delete)
	break;
	if (!local_file_list->files[i]->basename)
	continue;
	if (flist_find(flist,local_file_list->files[i]) < 0) {
	char *f = f_name(local_file_list->files[i]);
	if (make_backups && (backup_dir \|\| !is_backup_file(f))) {
	(void) make_backup(f);
	if (verbose)
	rprintf(FINFO, "deleting %s\n", f);
	} else {
	int mode = local_file_list->files[i]->mode;
	delete_one(f, S_ISDIR(mode) != 0);
	}
	deletion_count++;
	}
	}
	flist_free(local_file_list);
	}
	}


	/*
	* get_tmpname() - create a tmp filename for a given filename
	*
	* If a tmpdir is defined, use that as the directory to
	* put it in. Otherwise, the tmp filename is in the same
	* directory as the given name. Note that there may be no
	* directory at all in the given name!
	*
	* The tmp filename is basically the given filename with a
	* dot prepended, and .XXXXXX appended (for mkstemp() to
	* put its unique gunk in). Take care to not exceed
	* either the MAXPATHLEN or NAME_MAX, esp. the last, as
	* the basename basically becomes 8 chars longer. In that
	* case, the original name is shortened sufficiently to
	* make it all fit.
	*
	* Of course, there's no real reason for the tmp name to
	* look like the original, except to satisfy us humans.
	* As long as it's unique, rsync will work.
	*/

	static int get_tmpname(char fnametmp, char fname)
	{
	char *f;
	int length = 0;
	int maxname;

	if (tmpdir) {
	/* Note: this can't overflow, so the return value is safe */
	length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
	fnametmp[length++] = '/';
	fnametmp[length] = '\0'; /* always NULL terminated */
	}

	if ((f = strrchr(fname, '/')) != NULL) {
	++f;
	if (!tmpdir) {
	length = f - fname;
	/* copy up to and including the slash */
	strlcpy(fnametmp, fname, length + 1);
	}
	} else
	f = fname;
	fnametmp[length++] = '.';
	fnametmp[length] = '\0'; /* always NULL terminated */

	maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);

	if (maxname < 1) {
	rprintf(FERROR, "temporary filename too long: %s\n", fname);
	fnametmp[0] = '\0';
	return 0;
	}

	strlcpy(fnametmp + length, f, maxname);
	strcat(fnametmp + length, ".XXXXXX");

	return 1;
	}


	static int receive_data(int f_in,struct map_struct mapbuf,int fd,char fname,
	OFF_T total_size)
	{
	int i;
	struct sum_struct sum;
	unsigned int len;
	OFF_T offset = 0;
	OFF_T offset2;
	char *data;
	static char file_sum1[MD4_SUM_LENGTH];
	static char file_sum2[MD4_SUM_LENGTH];
	char *map=NULL;

	read_sum_head(f_in, &sum);

	sum_init();

	while ((i = recv_token(f_in, &data)) != 0) {
	if (do_progress)
	show_progress(offset, total_size);

	if (i > 0) {
	if (verbose > 3) {
	rprintf(FINFO,"data recv %d at %.0f\n",
	i,(double)offset);
	}

	stats.literal_data += i;
	cleanup_got_literal = 1;

	sum_update(data,i);

	if (fd != -1 && write_file(fd,data,i) != i) {
	rprintf(FERROR, "write failed on %s: %s\n",
	full_fname(fname), strerror(errno));
	exit_cleanup(RERR_FILEIO);
	}
	offset += i;
	continue;
	}

	i = -(i+1);
	offset2 = i*(OFF_T)sum.blength;
	len = sum.blength;
	if (i == (int) sum.count-1 && sum.remainder != 0)
	len = sum.remainder;

	stats.matched_data += len;

	if (verbose > 3)
	rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
	i,len,(double)offset2,(double)offset);

	if (mapbuf) {
	map = map_ptr(mapbuf,offset2,len);

	see_token(map, len);
	sum_update(map,len);
	}

	if (fd != -1 && write_file(fd,map,len) != (int) len) {
	rprintf(FERROR, "write failed on %s: %s\n",
	full_fname(fname), strerror(errno));
	exit_cleanup(RERR_FILEIO);
	}
	offset += len;
	}

	flush_write_file(fd);

	if (do_progress)
	end_progress(total_size);

	if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
	rprintf(FERROR, "write failed on %s: %s\n",
	full_fname(fname), strerror(errno));
	exit_cleanup(RERR_FILEIO);
	}

	sum_end(file_sum1);

	read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
	if (verbose > 2) {
	rprintf(FINFO,"got file_sum\n");
	}
	if (fd != -1 && memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
	return 0;
	}
	return 1;
	}


	/**
	* main routine for receiver process.
	*
	* Receiver process runs on the same host as the generator process. */
	int recv_files(int f_in,struct file_list flist,char local_name)
	{
	int fd1,fd2;
	STRUCT_STAT st;
	char *fname, fbuf[MAXPATHLEN];
	char template[MAXPATHLEN];
	char fnametmp[MAXPATHLEN];
	char *fnamecmp;
	char fnamecmpbuf[MAXPATHLEN];
	struct map_struct *mapbuf;
	int i;
	struct file_struct *file;
	int phase=0;
	int recv_ok;
	struct stats initial_stats;

	if (verbose > 2) {
	rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
	}

	if (flist->hlink_pool) {
	pool_destroy(flist->hlink_pool);
	flist->hlink_pool = NULL;
	}

	while (1) {
	cleanup_disable();

	i = read_int(f_in);
	if (i == -1) {
	if (phase == 0) {
	phase++;
	csum_length = SUM_LENGTH;
	if (verbose > 2)
	rprintf(FINFO,"recv_files phase=%d\n",phase);
	send_msg(MSG_DONE, "", 0);
	continue;
	}
	break;
	}

	if (i < 0 \|\| i >= flist->count) {
	rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
	i, flist->count);
	exit_cleanup(RERR_PROTOCOL);
	}

	file = flist->files[i];

	stats.current_file_index = i;
	stats.num_transferred_files++;
	stats.total_transferred_size += file->length;
	cleanup_got_literal = 0;

	if (local_name)
	fname = local_name;
	else
	fname = f_name_to(file, fbuf);

	if (dry_run) {
	if (!am_server && verbose) { /* log transfer */
	rprintf(FINFO, "%s\n", fname);
	}
	continue;
	}

	initial_stats = stats;

	if (verbose > 2)
	rprintf(FINFO,"recv_files(%s)\n",fname);

	fnamecmp = fname;

	/* open the file */
	fd1 = do_open(fnamecmp, O_RDONLY, 0);

	if (fd1 == -1 && compare_dest != NULL) {
	/* try the file at compare_dest instead */
	pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
	compare_dest, fname);
	fnamecmp = fnamecmpbuf;
	fd1 = do_open(fnamecmp, O_RDONLY, 0);
	}

	if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
	rprintf(FERROR, "fstat %s failed: %s\n",
	full_fname(fnamecmp), strerror(errno));
	receive_data(f_in,NULL,-1,NULL,file->length);
	close(fd1);
	continue;
	}

	if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
	/* this special handling for directories
	* wouldn't be necessary if robust_rename()
	* and the underlying robust_unlink could cope
	* with directories
	*/
	rprintf(FERROR,"recv_files: %s is a directory\n",
	full_fname(fnamecmp));
	receive_data(f_in, NULL, -1, NULL, file->length);
	close(fd1);
	continue;
	}

	if (fd1 != -1 && !S_ISREG(st.st_mode)) {
	close(fd1);
	fd1 = -1;
	mapbuf = NULL;
	}

	if (fd1 != -1 && !preserve_perms) {
	/* if the file exists already and we aren't preserving
	* permissions then act as though the remote end sent
	* us the file permissions we already have */
	file->mode = st.st_mode;
	}

	if (fd1 != -1 && st.st_size > 0) {
	mapbuf = map_file(fd1,st.st_size);
	if (verbose > 2)
	rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
	} else
	mapbuf = NULL;

	if (!get_tmpname(fnametmp,fname)) {
	if (mapbuf) unmap_file(mapbuf);
	if (fd1 != -1) close(fd1);
	continue;
	}

	strlcpy(template, fnametmp, sizeof template);

	/* we initially set the perms without the
	* setuid/setgid bits to ensure that there is no race
	* condition. They are then correctly updated after
	* the lchown. Thanks to snabb@epipe.fi for pointing
	* this out. We also set it initially without group
	* access because of a similar race condition. */
	fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);

	/* in most cases parent directories will already exist
	* because their information should have been previously
	* transferred, but that may not be the case with -R */
	if (fd2 == -1 && relative_paths && errno == ENOENT &&
	create_directory_path(fnametmp, orig_umask) == 0) {
	strlcpy(fnametmp, template, sizeof fnametmp);
	fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
	}
	if (fd2 == -1) {
	rprintf(FERROR, "mkstemp %s failed: %s\n",
	full_fname(fnametmp), strerror(errno));
	receive_data(f_in,mapbuf,-1,NULL,file->length);
	if (mapbuf) unmap_file(mapbuf);
	if (fd1 != -1) close(fd1);
	continue;
	}

	cleanup_set(fnametmp, fname, file, mapbuf, fd1, fd2);

	if (!am_server && verbose) { /* log transfer */
	rprintf(FINFO, "%s\n", fname);
	}

	/* recv file data */
	recv_ok = receive_data(f_in,mapbuf,fd2,fname,file->length);

	log_recv(file, &initial_stats);

	if (mapbuf) unmap_file(mapbuf);
	if (fd1 != -1) {
	close(fd1);
	}
	if (close(fd2) < 0) {
	rprintf(FERROR, "close failed on %s: %s\n",
	full_fname(fnametmp), strerror(errno));
	exit_cleanup(RERR_FILEIO);
	}

	if (verbose > 2)
	rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);

	if (recv_ok \|\| keep_partial)
	finish_transfer(fname, fnametmp, file, recv_ok);
	else
	do_unlink(fnametmp);

	cleanup_disable();

	if (!recv_ok) {
	if (csum_length == SUM_LENGTH) {
	rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
	full_fname(fname));
	} else {
	char buf[4];
	if (verbose > 1)
	rprintf(FINFO,"redoing %s(%d)\n",fname,i);
	SIVAL(buf, 0, i);
	send_msg(MSG_REDO, buf, 4);
	}
	}
	}

	if (delete_after && recurse && delete_mode && !local_name
	&& flist->count > 0)
	delete_files(flist);

	if (verbose > 2)
	rprintf(FINFO,"recv_files finished\n");

	return 0;
	}