X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/46e99b09b980f3d67dc3f92f07b27db754981662..0417c34e2d641cbac292ba5cf8a619249c87d4e3:/receiver.c

diff --git a/receiver.c b/receiver.c
index 656f2a25..5a883114 100644
--- a/receiver.c
+++ b/receiver.c
@@ -21,7 +21,7 @@
 #include "rsync.h"
 
 extern int verbose;
-extern int dry_run;
+extern int do_xfers;
 extern int am_daemon;
 extern int am_server;
 extern int do_progress;
@@ -30,6 +30,7 @@ extern int log_format_has_i;
 extern int daemon_log_format_has_i;
 extern int csum_length;
 extern int read_batch;
+extern int write_batch;
 extern int batch_gen_fd;
 extern int protocol_version;
 extern int relative_paths;
@@ -44,6 +45,8 @@ extern int remove_sent_files;
 extern int module_id;
 extern int ignore_errors;
 extern int orig_umask;
+extern int append_mode;
+extern int sparse_files;
 extern int keep_partial;
 extern int checksum_seed;
 extern int inplace;
@@ -53,7 +56,7 @@ extern char *log_format;
 extern char *tmpdir;
 extern char *partial_dir;
 extern char *basis_dir[];
-
+extern struct file_list *the_file_list;
 extern struct filter_list_struct server_filter_list;
 
 #define SLOT_SIZE	(16*1024)	/* Desired size in bytes */
@@ -62,6 +65,7 @@ extern struct filter_list_struct server_filter_list;
 
 static uint32 **delayed_bits = NULL;
 static int delayed_slot_cnt = 0;
+static int phase = 0;
 
 static void init_delayed_bits(int max_ndx)
 {
@@ -210,6 +214,32 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 
 	sum_init(checksum_seed);
 
+	if (append_mode) {
+		OFF_T j;
+		sum.flength = (OFF_T)sum.count * sum.blength;
+		if (sum.remainder)
+			sum.flength -= sum.blength - sum.remainder;
+		for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
+			if (do_progress)
+				show_progress(offset, total_size);
+			sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
+				   CHUNK_SIZE);
+			offset = j;
+		}
+		if (offset < sum.flength) {
+			int32 len = sum.flength - offset;
+			if (do_progress)
+				show_progress(offset, total_size);
+			sum_update(map_ptr(mapbuf, offset, len), len);
+			offset = sum.flength;
+		}
+		if (fd != -1 && do_lseek(fd, offset, SEEK_SET) != offset) {
+			rsyserr(FERROR, errno, "lseek failed on %s",
+				full_fname(fname));
+			exit_cleanup(RERR_FILEIO);
+		}
+	}
+
 	while ((i = recv_token(f_in, &data)) != 0) {
 		if (do_progress)
 			show_progress(offset, total_size);
@@ -266,7 +296,7 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 				continue;
 			}
 		}
-		if (fd != -1 && write_file(fd, map, len) != (int)len)
+		if (fd != -1 && map && write_file(fd, map, len) != (int)len)
 			goto report_write_error;
 		offset += len;
 	}
@@ -303,23 +333,62 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 }
 
 
-static void read_gen_name(int fd, char *dirname, char *buf)
+static void discard_receive_data(int f_in, OFF_T length)
 {
-	int dlen;
-
-	if (dirname) {
-		dlen = strlcpy(buf, dirname, MAXPATHLEN);
-		buf[dlen++] = '/';
-	} else
-		dlen = 0;
-
-	read_vstring(fd, buf + dlen, MAXPATHLEN - dlen);
+	receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 }
 
+static void handle_delayed_updates(struct file_list *flist, char *local_name)
+{
+	char *fname, *partialptr, numbuf[4];
+	int i;
+
+	for (i = -1; (i = next_delayed_bit(i)) >= 0; ) {
+		struct file_struct *file = flist->files[i];
+		fname = local_name ? local_name : f_name(file);
+		if ((partialptr = partial_dir_fname(fname)) != NULL) {
+			if (make_backups && !make_backup(fname))
+				continue;
+			if (verbose > 2) {
+				rprintf(FINFO, "renaming %s to %s\n",
+					safe_fname(partialptr),
+					safe_fname(fname));
+			}
+			/* We don't use robust_rename() here because the
+			 * partial-dir must be on the same drive. */
+			if (do_rename(partialptr, fname) < 0) {
+				rsyserr(FERROR, errno,
+					"rename failed for %s (from %s)",
+					full_fname(fname),
+					safe_fname(partialptr));
+			} else {
+				if (remove_sent_files
+				    || (preserve_hard_links
+				     && file->link_u.links)) {
+					SIVAL(numbuf, 0, i);
+					send_msg(MSG_SUCCESS,numbuf,4);
+				}
+				handle_partial_dir(partialptr,
+						   PDIR_DELETE);
+			}
+		}
+	}
+}
 
-static void discard_receive_data(int f_in, OFF_T length)
+static int get_next_gen_i(int batch_gen_fd, int next_gen_i, int desired_i)
 {
-	receive_data(f_in, NULL, -1, 0, NULL, -1, length);
+	while (next_gen_i < desired_i) {
+		if (next_gen_i >= 0) {
+			rprintf(FINFO,
+				"(No batched update for%s \"%s\")\n",
+				phase ? " resend of" : "",
+				safe_fname(f_name(the_file_list->files[next_gen_i])));
+		}
+		next_gen_i = read_int(batch_gen_fd);
+		if (next_gen_i == -1)
+			next_gen_i = the_file_list->count;
+	}
+	return next_gen_i;
 }
 
 
@@ -327,24 +396,25 @@ static void discard_receive_data(int f_in, OFF_T length)
  * 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 f_in_name)
+int recv_files(int f_in, struct file_list *flist, char *local_name)
 {
 	int next_gen_i = -1;
 	int fd1,fd2;
 	STRUCT_STAT st;
-	int iflags;
+	int iflags, xlen;
 	char *fname, fbuf[MAXPATHLEN];
-	char template[MAXPATHLEN];
+	char xname[MAXPATHLEN];
 	char fnametmp[MAXPATHLEN];
 	char *fnamecmp, *partialptr, numbuf[4];
 	char fnamecmpbuf[MAXPATHLEN];
+	uchar fnamecmp_type;
 	struct file_struct *file;
 	struct stats initial_stats;
 	int save_make_backups = make_backups;
 	int itemizing = am_daemon ? daemon_log_format_has_i
 		      : !am_server && log_format_has_i;
-	int i, recv_ok, phase = 0;
+	int max_phase = protocol_version >= 29 ? 2 : 1;
+	int i, recv_ok;
 
 	if (verbose > 2)
 		rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
@@ -363,38 +433,31 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 		i = read_int(f_in);
 		if (i == -1) {
 			if (read_batch) {
-				if (next_gen_i != flist->count) {
-					do {
-						if (f_in_name >= 0
-						    && next_gen_i >= 0)
-							read_byte(f_in_name);
-					} while (read_int(batch_gen_fd) != -1);
-				}
+				get_next_gen_i(batch_gen_fd, next_gen_i,
+					       flist->count);
 				next_gen_i = -1;
 			}
-
-			if (phase)
+			if (++phase > max_phase)
 				break;
-
-			phase = 1;
 			csum_length = SUM_LENGTH;
 			if (verbose > 2)
 				rprintf(FINFO, "recv_files phase=%d\n", phase);
+			if (phase == 2 && delay_updates)
+				handle_delayed_updates(flist, local_name);
 			send_msg(MSG_DONE, "", 0);
 			if (keep_partial && !partial_dir)
 				make_backups = 0; /* prevents double backup */
+			if (append_mode) {
+				append_mode = 0;
+				sparse_files = 0;
+			}
 			continue;
 		}
 
-		if (i < 0 || i >= flist->count) {
-			/* Handle the new keep-alive (no-op) packet. */
-			if (i == flist->count && protocol_version >= 29
-	 		    && read_shortint(f_in) == ITEM_IS_NEW)
-				continue;
-			rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
-				i, flist->count);
-			exit_cleanup(RERR_PROTOCOL);
-		}
+		iflags = read_item_attrs(f_in, -1, i, &fnamecmp_type,
+					 xname, &xlen);
+		if (iflags == ITEM_IS_NEW) /* no-op packet */
+			continue;
 
 		file = flist->files[i];
 		fname = local_name ? local_name : f_name_to(file, fbuf);
@@ -402,25 +465,14 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 		if (verbose > 2)
 			rprintf(FINFO, "recv_files(%s)\n", safe_fname(fname));
 
-		if (protocol_version >= 29) {
-			iflags = read_shortint(f_in);
-			if (!(iflags & ITEM_UPDATING) || !S_ISREG(file->mode)) {
-				int see_item = itemizing && (iflags || verbose > 1);
-				if (am_server) {
-					if (am_daemon && !dry_run && see_item)
-						log_recv(file, &stats, iflags);
-				} else if (see_item || iflags & ITEM_UPDATING
-				    || (S_ISDIR(file->mode)
-				     && iflags & ITEM_REPORT_TIME))
-					log_recv(file, &stats, iflags);
-				continue;
-			}
-		} else
-			iflags = ITEM_UPDATING | ITEM_MISSING_DATA;
-
-		if (!S_ISREG(file->mode)) {
-			rprintf(FERROR, "[%s] got index of non-regular file: %d\n",
-				who_am_i(), i);
+		if (!(iflags & ITEM_TRANSFER)) {
+			maybe_log_item(file, iflags, itemizing, xname);
+			continue;
+		}
+		if (phase == 2) {
+			rprintf(FERROR,
+				"got transfer request in phase 2 [%s]\n",
+				who_am_i());
 			exit_cleanup(RERR_PROTOCOL);
 		}
 
@@ -435,22 +487,24 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 			exit_cleanup(RERR_PROTOCOL);
 		}
 
-		if (dry_run) { /* log the transfer */
+		if (!do_xfers) { /* log the transfer */
 			if (!am_server && log_format)
-				log_recv(file, &stats, iflags);
+				log_item(file, &stats, iflags, NULL);
+			if (read_batch)
+				discard_receive_data(f_in, file->length);
+			continue;
+		}
+		if (write_batch < 0) {
+			log_item(file, &stats, iflags, NULL);
+			if (!am_server)
+				discard_receive_data(f_in, file->length);
 			continue;
 		}
 
 		if (read_batch) {
-			while (i > next_gen_i) {
-				if (f_in_name >= 0 && next_gen_i >= 0)
-					read_byte(f_in_name);
-				next_gen_i = read_int(batch_gen_fd);
-				if (next_gen_i == -1)
-					next_gen_i = flist->count;
-			}
+			next_gen_i = get_next_gen_i(batch_gen_fd, next_gen_i, i);
 			if (i < next_gen_i) {
-				rprintf(FINFO, "skipping update for \"%s\"\n",
+				rprintf(FINFO, "(Skipping batched update for \"%s\")\n",
 					safe_fname(fname));
 				discard_receive_data(f_in, file->length);
 				continue;
@@ -460,42 +514,72 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 
 		partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 
-		if (f_in_name >= 0) {
-			uchar j;
-			switch (j = read_byte(f_in_name)) {
+		if (protocol_version >= 29) {
+			switch (fnamecmp_type) {
 			case FNAMECMP_FNAME:
 				fnamecmp = fname;
 				break;
 			case FNAMECMP_PARTIAL_DIR:
-				fnamecmp = partialptr ? partialptr : fname;
+				fnamecmp = partialptr;
 				break;
 			case FNAMECMP_BACKUP:
 				fnamecmp = get_backup_name(fname);
 				break;
 			case FNAMECMP_FUZZY:
-				read_gen_name(f_in_name, file->dirname, fnamecmpbuf);
-				fnamecmp = fnamecmpbuf;
+				if (file->dirname) {
+					pathjoin(fnamecmpbuf, MAXPATHLEN,
+						 file->dirname, xname);
+					fnamecmp = fnamecmpbuf;
+				} else
+					fnamecmp = xname;
 				break;
 			default:
-				if (j >= basis_dir_cnt) {
+				if (fnamecmp_type >= basis_dir_cnt) {
 					rprintf(FERROR,
 						"invalid basis_dir index: %d.\n",
-						j);
+						fnamecmp_type);
 					exit_cleanup(RERR_PROTOCOL);
 				}
 				pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
-					 basis_dir[j], fname);
+					 basis_dir[fnamecmp_type], fname);
 				fnamecmp = fnamecmpbuf;
 				break;
 			}
-		} else
-			fnamecmp = fname;
+			if (!fnamecmp || (server_filter_list.head
+			  && check_filter(&server_filter_list, fname, 0) < 0))
+				fnamecmp = fname;
+		} else {
+			/* Reminder: --inplace && --partial-dir are never
+			 * enabled at the same time. */
+			if (inplace && make_backups) {
+				if (!(fnamecmp = get_backup_name(fname)))
+					fnamecmp = fname;
+			} else if (partial_dir && partialptr)
+				fnamecmp = partialptr;
+			else
+				fnamecmp = fname;
+		}
 
 		initial_stats = stats;
 
 		/* open the file */
 		fd1 = do_open(fnamecmp, O_RDONLY, 0);
 
+		if (fd1 == -1 && protocol_version < 29) {
+			if (fnamecmp != fname) {
+				fnamecmp = fname;
+				fd1 = do_open(fnamecmp, O_RDONLY, 0);
+			}
+
+			if (fd1 == -1 && basis_dir[0]) {
+				/* pre-29 allowed only one alternate basis */
+				pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
+					 basis_dir[0], fname);
+				fnamecmp = fnamecmpbuf;
+				fd1 = do_open(fnamecmp, O_RDONLY, 0);
+			}
+		}
+
 		if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
 			rsyserr(FERROR, errno, "fstat %s failed",
 				full_fname(fnamecmp));
@@ -531,7 +615,7 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 
 		/* We now check to see if we are writing file "inplace" */
 		if (inplace)  {
-			fd2 = do_open(fname, O_WRONLY|O_CREAT, 0);
+			fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
 			if (fd2 == -1) {
 				rsyserr(FERROR, errno, "open %s failed",
 					full_fname(fname));
@@ -548,8 +632,6 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 				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
@@ -563,7 +645,8 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 			 * 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);
+				/* Get back to name with XXXXXX in it. */
+				get_tmpname(fnametmp, fname);
 				fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 			}
 			if (fd2 == -1) {
@@ -581,7 +664,7 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 
 		/* log the transfer */
 		if (log_before_transfer)
-			log_recv(file, &initial_stats, iflags);
+			log_item(file, &initial_stats, iflags, NULL);
 		else if (!am_server && verbose && do_progress)
 			rprintf(FINFO, "%s\n", safe_fname(fname));
 
@@ -590,7 +673,7 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 				       fname, fd2, file->length);
 
 		if (!log_before_transfer)
-			log_recv(file, &initial_stats, iflags);
+			log_item(file, &initial_stats, iflags, NULL);
 
 		if (fd1 != -1)
 			close(fd1);
@@ -621,14 +704,14 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 
 		cleanup_disable();
 
-		if (recv_ok) {
-			if (remove_sent_files && recv_ok > 0) {
+		if (recv_ok > 0) {
+			if (remove_sent_files
+			    || (preserve_hard_links && file->link_u.links)) {
 				SIVAL(numbuf, 0, i);
 				send_msg(MSG_SUCCESS, numbuf, 4);
 			}
-		} else {
-			int msgtype = csum_length == SUM_LENGTH || read_batch ?
-				FERROR : FINFO;
+		} else if (!recv_ok) {
+			int msgtype = phase || read_batch ? FERROR : FINFO;
 			if (msgtype == FERROR || verbose) {
 				char *errstr, *redostr, *keptstr;
 				if (!(keep_partial && partialptr) && !inplace)
@@ -649,7 +732,7 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 					errstr, safe_fname(fname),
 					keptstr, redostr);
 			}
-			if (csum_length != SUM_LENGTH) {
+			if (!phase) {
 				SIVAL(numbuf, 0, i);
 				send_msg(MSG_REDO, numbuf, 4);
 			}
@@ -657,35 +740,8 @@ int recv_files(int f_in, struct file_list *flist, char *local_name,
 	}
 	make_backups = save_make_backups;
 
-	if (delay_updates) {
-		for (i = -1; (i = next_delayed_bit(i)) >= 0; ) {
-			struct file_struct *file = flist->files[i];
-			fname = local_name ? local_name : f_name(file);
-			partialptr = partial_dir_fname(fname);
-			if (partialptr) {
-				if (make_backups && !make_backup(fname))
-					continue;
-				if (verbose > 2) {
-					rprintf(FINFO, "renaming %s to %s\n",
-						safe_fname(partialptr),
-						safe_fname(fname));
-				}
-				if (do_rename(partialptr, fname) < 0) {
-					rsyserr(FERROR, errno,
-						"rename failed for %s (from %s)",
-						full_fname(fname),
-						safe_fname(partialptr));
-				} else {
-					if (remove_sent_files) {
-						SIVAL(numbuf, 0, i);
-						send_msg(MSG_SUCCESS,numbuf,4);
-					}
-					handle_partial_dir(partialptr,
-							   PDIR_DELETE);
-				}
-			}
-		}
-	}
+	if (phase == 2 && delay_updates) /* for protocol_version < 29 */
+		handle_delayed_updates(flist, local_name);
 
 	if (verbose > 2)
 		rprintf(FINFO,"recv_files finished\n");