X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/0394e34a69e7051012125dc4e49d8d928ce15290..5dd14f0c3388f69932d521915e039e32b9e6d970:/sender.c

diff --git a/sender.c b/sender.c
index 39988225..3937a10f 100644
--- a/sender.c
+++ b/sender.c
@@ -1,43 +1,49 @@
 /*
-   Copyright (C) Andrew Tridgell 1996
-   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.
-*/
+ * Routines only used by the sending process.
+ *
+ * Copyright (C) 1996 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2003-2008 Wayne Davison
+ *
+ * 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 3 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, visit the http://fsf.org website.
+ */
 
 #include "rsync.h"
+#include "inums.h"
 
-extern int verbose;
 extern int dry_run;
+extern int do_xfers;
 extern int am_server;
 extern int am_daemon;
+extern int inc_recurse;
 extern int log_before_transfer;
-extern int log_format_has_i;
-extern int daemon_log_format_has_i;
+extern int stdout_format_has_i;
+extern int logfile_format_has_i;
 extern int csum_length;
+extern int append_mode;
 extern int io_error;
+extern int allowed_lull;
+extern int preserve_xattrs;
 extern int protocol_version;
-extern int remove_sent_files;
+extern int remove_source_files;
 extern int updating_basis_file;
 extern int make_backups;
-extern int do_progress;
 extern int inplace;
+extern int batch_fd;
+extern int write_batch;
 extern struct stats stats;
-extern struct file_list *the_file_list;
-extern char *log_format;
-
+extern struct file_list *cur_flist, *first_flist, *dir_flist;
 
 /**
  * @file
@@ -54,6 +60,7 @@ static struct sum_struct *receive_sums(int f)
 {
 	struct sum_struct *s;
 	int32 i;
+	int lull_mod = allowed_lull * 5;
 	OFF_T offset = 0;
 
 	if (!(s = new(struct sum_struct)))
@@ -63,9 +70,16 @@ static struct sum_struct *receive_sums(int f)
 
 	s->sums = NULL;
 
-	if (verbose > 3) {
-		rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
-			(double)s->count, (long)s->blength, (long)s->remainder);
+	if (DEBUG_GTE(DELTASUM, 3)) {
+		rprintf(FINFO, "count=%s n=%ld rem=%ld\n",
+			big_num(s->count), (long)s->blength, (long)s->remainder);
+	}
+
+	if (append_mode > 0) {
+		s->flength = (OFF_T)s->count * s->blength;
+		if (s->remainder)
+			s->flength -= s->blength - s->remainder;
+		return s;
 	}
 
 	if (s->count == 0)
@@ -87,10 +101,13 @@ static struct sum_struct *receive_sums(int f)
 			s->sums[i].len = s->blength;
 		offset += s->sums[i].len;
 
-		if (verbose > 3) {
+		if (allowed_lull && !(i % lull_mod))
+			maybe_send_keepalive();
+
+		if (DEBUG_GTE(DELTASUM, 3)) {
 			rprintf(FINFO,
-				"chunk[%d] len=%d offset=%.0f sum1=%08x\n",
-				i, s->sums[i].len, (double)s->sums[i].offset,
+				"chunk[%d] len=%d offset=%s sum1=%08x\n",
+				i, s->sums[i].len, big_num(s->sums[i].offset),
 				s->sums[i].sum1);
 		}
 	}
@@ -104,159 +121,156 @@ void successful_send(int ndx)
 {
 	char fname[MAXPATHLEN];
 	struct file_struct *file;
-	unsigned int offset;
+	struct file_list *flist;
 
-	if (ndx < 0 || ndx >= the_file_list->count)
+	if (!remove_source_files)
 		return;
 
-	file = the_file_list->files[ndx];
-	/* The generator might tell us about symlinks we didn't send. */
-	if (!(file->flags & FLAG_SENT) && !S_ISLNK(file->mode))
+	flist = flist_for_ndx(ndx, "successful_send");
+	file = flist->files[ndx - flist->ndx_start];
+	if (!change_pathname(file, NULL, 0))
 		return;
-	if (file->dir.root) {
-		offset = stringjoin(fname, sizeof fname,
-				    file->dir.root, "/", NULL);
+	f_name(file, fname);
+
+	if (do_unlink(fname) == 0) {
+		if (INFO_GTE(REMOVE, 1))
+			rprintf(FINFO, "sender removed %s\n", fname);
 	} else
-		offset = 0;
-	f_name_to(file, fname + offset);
-	if (remove_sent_files && do_unlink(fname) == 0 && verbose > 1) {
-		rprintf(FINFO, "sender removed %s\n",
-			safe_fname(fname + offset));
-	}
+		rsyserr(FERROR, errno, "sender failed to remove %s", fname);
 }
 
-/* This is also used by receive.c with f_out = -1. */
-int read_iflags(int f_in, int f_out, int ndx, char *buf)
+static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
+				const char *fname, struct file_struct *file,
+				uchar fnamecmp_type, char *buf, int len)
 {
-	int len;
-	int iflags = protocol_version >= 29 ? read_shortint(f_in)
-		   : ITEM_TRANSFER | ITEM_MISSING_DATA;
-	int isave = iflags; /* XXX remove soon */
-
-	/* Handle the new keep-alive (no-op) packet. */
-	if (ndx == the_file_list->count && iflags == ITEM_IS_NEW)
-		;
-	else if (ndx < 0 || ndx >= the_file_list->count) {
-		rprintf(FERROR, "Invalid file index %d (count=%d) [%s]\n",
-			ndx, the_file_list->count, who_am_i());
-		exit_cleanup(RERR_PROTOCOL);
-	} else if (iflags == ITEM_IS_NEW) {
-		rprintf(FERROR, "Invalid itemized flag word [%s]\n",
-			who_am_i());
-		exit_cleanup(RERR_PROTOCOL);
-	}
-
-	if (iflags & ITEM_HARD_LINKED)
-		len = read_vstring(f_in, buf, MAXPATHLEN);
-	else {
-		*buf = '\0';
-		len = -1;
-	}
-
-	/* XXX Temporary compatibility hack */
-	if (iflags & ITEM_REPORT_XATTRS) { /* old ITEM_UPDATE */
-		iflags &= ~ITEM_REPORT_XATTRS;
-		if (!(iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE))) {
-			if (S_ISREG(the_file_list->files[ndx]->mode))
-				iflags |= ITEM_TRANSFER;
-			else
-				iflags |= ITEM_LOCAL_CHANGE;
-		}
-	}
-
-	if (iflags & ITEM_TRANSFER) {
-		if (!S_ISREG(the_file_list->files[ndx]->mode)) {
-			rprintf(FERROR,
-				"received index of non-regular file: %d [%s]\n",
-				ndx, who_am_i());
-			exit_cleanup(RERR_PROTOCOL);
-		}
-	} else if (f_out >= 0) {
-		write_int(f_out, ndx);
-		write_shortint(f_out, isave /*XXX iflags */);
-		if (len >= 0)
-			write_vstring(f_out, buf, len);
-	}
-
-	return iflags;
+	write_ndx(f_out, ndx);
+	if (protocol_version < 29)
+		return;
+	write_shortint(f_out, iflags);
+	if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
+		write_byte(f_out, fnamecmp_type);
+	if (iflags & ITEM_XNAME_FOLLOWS)
+		write_vstring(f_out, buf, len);
+#ifdef SUPPORT_XATTRS
+	if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
+		send_xattr_request(fname, file, f_out);
+#endif
 }
 
-void send_files(struct file_list *flist, int f_out, int f_in)
+void send_files(int f_in, int f_out)
 {
 	int fd = -1;
 	struct sum_struct *s;
 	struct map_struct *mbuf = NULL;
 	STRUCT_STAT st;
-	char *fname2, fname[MAXPATHLEN];
-	char fnametmp[MAXPATHLEN];
-	int iflags;
+	char fname[MAXPATHLEN], xname[MAXPATHLEN];
+	const char *path, *slash;
+	uchar fnamecmp_type;
+	int iflags, xlen;
 	struct file_struct *file;
-	int phase = 0;
+	int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
 	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, j;
+	int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
+	enum logcode log_code = log_before_transfer ? FLOG : FINFO;
+	int f_xfer = write_batch < 0 ? batch_fd : f_out;
+	int ndx, j;
 
-	if (verbose > 2)
+	if (DEBUG_GTE(SEND, 1))
 		rprintf(FINFO, "send_files starting\n");
 
 	while (1) {
-		unsigned int offset;
-
-		i = read_int(f_in);
-		if (i == -1) {
-			if (phase == 0) {
-				phase++;
-				csum_length = SUM_LENGTH;
-				write_int(f_out, -1);
-				if (verbose > 2)
-					rprintf(FINFO, "send_files phase=%d\n", phase);
-				/* For inplace: redo phase turns off the backup
-				 * flag so that we do a regular inplace send. */
-				make_backups = 0;
-				continue;
+		if (inc_recurse)
+			send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
+
+		/* This call also sets cur_flist. */
+		ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
+					 xname, &xlen);
+		if (ndx == NDX_DONE) {
+			if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
+				set_current_file_index(NULL, 0);
+				end_progress(0);
 			}
-			break;
+			if (inc_recurse && first_flist) {
+				flist_free(first_flist);
+				if (first_flist) {
+					write_ndx(f_out, NDX_DONE);
+					continue;
+				}
+			}
+			if (++phase > max_phase)
+				break;
+			if (DEBUG_GTE(SEND, 1))
+				rprintf(FINFO, "send_files phase=%d\n", phase);
+			write_ndx(f_out, NDX_DONE);
+			continue;
 		}
 
-		iflags = read_iflags(f_in, f_out, i, fnametmp);
-		if (iflags == ITEM_IS_NEW) /* no-op packet */
+		if (inc_recurse)
+			send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
+
+		if (ndx - cur_flist->ndx_start >= 0)
+			file = cur_flist->files[ndx - cur_flist->ndx_start];
+		else
+			file = dir_flist->files[cur_flist->parent_ndx];
+		if (F_PATHNAME(file)) {
+			path = F_PATHNAME(file);
+			slash = "/";
+		} else {
+			path = slash = "";
+		}
+		if (!change_pathname(file, NULL, 0))
 			continue;
+		f_name(file, fname);
 
-		file = flist->files[i];
-		if (file->dir.root) {
-			/* N.B. We're sure that this fits, so offset is OK. */
-			offset = strlcpy(fname, file->dir.root, sizeof fname);
-			if (!offset || fname[offset-1] != '/')
-				fname[offset++] = '/';
-		} else
-			offset = 0;
-		fname2 = f_name_to(file, fname + offset);
+		if (DEBUG_GTE(SEND, 1))
+			rprintf(FINFO, "send_files(%d, %s%s%s)\n", ndx, path,slash,fname);
 
-		if (verbose > 2)
-			rprintf(FINFO, "send_files(%d, %s)\n", i, fname);
+#ifdef SUPPORT_XATTRS
+		if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
+			recv_xattr_request(file, f_in);
+#endif
 
 		if (!(iflags & ITEM_TRANSFER)) {
-			maybe_log_item(file, iflags, itemizing, fnametmp);
+			maybe_log_item(file, iflags, itemizing, xname);
+			write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
+					    fnamecmp_type, xname, xlen);
 			continue;
 		}
+		if (phase == 2) {
+			rprintf(FERROR,
+				"got transfer request in phase 2 [%s]\n",
+				who_am_i());
+			exit_cleanup(RERR_PROTOCOL);
+		}
 
-		if (inplace && protocol_version >= 29) {
-			updating_basis_file = !(iflags & ITEM_USING_ALT_BASIS);
-		} else
-			updating_basis_file = inplace && !make_backups;
+		if (file->flags & FLAG_FILE_SENT) {
+			if (csum_length == SHORT_SUM_LENGTH) {
+				/* For inplace: redo phase turns off the backup
+				 * flag so that we do a regular inplace send. */
+				make_backups = -make_backups;
+				append_mode = -append_mode;
+				csum_length = SUM_LENGTH;
+			}
+		} else {
+			if (csum_length != SHORT_SUM_LENGTH) {
+				make_backups = -make_backups;
+				append_mode = -append_mode;
+				csum_length = SHORT_SUM_LENGTH;
+			}
+		}
 
-		stats.current_file_index = i;
+		updating_basis_file = inplace && (protocol_version >= 29
+			? fnamecmp_type == FNAMECMP_FNAME : make_backups <= 0);
+
+		if (!am_server && INFO_GTE(PROGRESS, 1))
+			set_current_file_index(file, ndx);
 		stats.num_transferred_files++;
-		stats.total_transferred_size += file->length;
-
-		if (dry_run) { /* log the transfer */
-			if (!am_server && log_format)
-				log_item(file, &stats, iflags, NULL);
-			write_int(f_out, i);
-			if (protocol_version >= 29)
-				write_shortint(f_out, iflags | ITEM_REPORT_XATTRS);
+		stats.total_transferred_size += F_LENGTH(file);
+
+		if (!do_xfers) { /* log the transfer */
+			log_item(FCLIENT, file, &stats, iflags, NULL);
+			write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
+					    fnamecmp_type, xname, xlen);
 			continue;
 		}
 
@@ -264,8 +278,8 @@ void send_files(struct file_list *flist, int f_out, int f_in)
 
 		if (!(s = receive_sums(f_in))) {
 			io_error |= IOERR_GENERAL;
-			rprintf(FERROR, "receive_sums failed\n");
-			return;
+			rprintf(FERROR_XFER, "receive_sums failed\n");
+			exit_cleanup(RERR_PROTOCOL);
 		}
 
 		fd = do_open(fname, O_RDONLY, 0);
@@ -273,27 +287,29 @@ void send_files(struct file_list *flist, int f_out, int f_in)
 			if (errno == ENOENT) {
 				enum logcode c = am_daemon
 				    && protocol_version < 28 ? FERROR
-							     : FINFO;
+							     : FWARNING;
 				io_error |= IOERR_VANISHED;
 				rprintf(c, "file has vanished: %s\n",
 					full_fname(fname));
 			} else {
 				io_error |= IOERR_GENERAL;
-				rsyserr(FERROR, errno,
+				rsyserr(FERROR_XFER, errno,
 					"send_files failed to open %s",
 					full_fname(fname));
 			}
 			free_sums(s);
+			if (protocol_version >= 30)
+				send_msg_int(MSG_NO_SEND, ndx);
 			continue;
 		}
 
 		/* map the local file */
 		if (do_fstat(fd, &st) != 0) {
 			io_error |= IOERR_GENERAL;
-			rsyserr(FERROR, errno, "fstat failed");
+			rsyserr(FERROR_XFER, errno, "fstat failed");
 			free_sums(s);
 			close(fd);
-			return;
+			exit_cleanup(RERR_PROTOCOL);
 		}
 
 		if (st.st_size) {
@@ -302,40 +318,36 @@ void send_files(struct file_list *flist, int f_out, int f_in)
 		} else
 			mbuf = NULL;
 
-		if (verbose > 2) {
-			rprintf(FINFO, "send_files mapped %s of size %.0f\n",
-				safe_fname(fname), (double)st.st_size);
+		if (DEBUG_GTE(DELTASUM, 2)) {
+			rprintf(FINFO, "send_files mapped %s%s%s of size %s\n",
+				path,slash,fname, big_num(st.st_size));
 		}
 
-		write_int(f_out, i);
-		if (protocol_version >= 29)
-			write_shortint(f_out, iflags | ITEM_REPORT_XATTRS);
-		write_sum_head(f_out, s);
+		write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
+				    fnamecmp_type, xname, xlen);
+		write_sum_head(f_xfer, s);
 
-		if (verbose > 2) {
-			rprintf(FINFO, "calling match_sums %s\n",
-				safe_fname(fname));
-		}
+		if (DEBUG_GTE(DELTASUM, 2))
+			rprintf(FINFO, "calling match_sums %s%s%s\n", path,slash,fname);
 
 		if (log_before_transfer)
-			log_item(file, &initial_stats, iflags, NULL);
-		else if (!am_server && verbose && do_progress)
-			rprintf(FINFO, "%s\n", safe_fname(fname2));
+			log_item(FCLIENT, file, &initial_stats, iflags, NULL);
+		else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
+			rprintf(FCLIENT, "%s\n", fname);
 
 		set_compression(fname);
 
-		match_sums(f_out, s, mbuf, st.st_size);
-		if (do_progress)
+		match_sums(f_xfer, s, mbuf, st.st_size);
+		if (INFO_GTE(PROGRESS, 1))
 			end_progress(st.st_size);
 
-		if (!log_before_transfer)
-			log_item(file, &initial_stats, iflags, NULL);
+		log_item(log_code, file, &initial_stats, iflags, NULL);
 
 		if (mbuf) {
 			j = unmap_file(mbuf);
 			if (j) {
 				io_error |= IOERR_GENERAL;
-				rsyserr(FERROR, j,
+				rsyserr(FERROR_XFER, j,
 					"read errors mapping %s",
 					full_fname(fname));
 			}
@@ -344,20 +356,19 @@ void send_files(struct file_list *flist, int f_out, int f_in)
 
 		free_sums(s);
 
-		if (verbose > 2) {
-			rprintf(FINFO, "sender finished %s\n",
-				safe_fname(fname));
-		}
+		if (DEBUG_GTE(SEND, 1))
+			rprintf(FINFO, "sender finished %s%s%s\n", path,slash,fname);
 
 		/* Flag that we actually sent this entry. */
-		file->flags |= FLAG_SENT;
+		file->flags |= FLAG_FILE_SENT;
 	}
-	make_backups = save_make_backups;
+	if (make_backups < 0)
+		make_backups = -make_backups;
 
-	if (verbose > 2)
+	if (DEBUG_GTE(SEND, 1))
 		rprintf(FINFO, "send files finished\n");
 
 	match_report();
 
-	write_int(f_out, -1);
+	write_ndx(f_out, NDX_DONE);
 }