X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/ebec5eb689e9b01509b6507d23478548cbc117e8..9c000f5e7bec6ddd1f488e2e2290fbf946a8de09:/flist.c

diff --git a/flist.c b/flist.c
index 61a6360d..f66a4e20 100644
--- a/flist.c
+++ b/flist.c
@@ -48,10 +48,12 @@ extern int preserve_links;
 extern int preserve_hard_links;
 extern int preserve_perms;
 extern int preserve_devices;
+extern int preserve_specials;
 extern int preserve_uid;
 extern int preserve_gid;
 extern int relative_paths;
 extern int implied_dirs;
+extern int skip_empty_dirs;
 extern int copy_links;
 extern int copy_unsafe_links;
 extern int protocol_version;
@@ -69,10 +71,12 @@ extern struct filter_list_struct server_filter_list;
 
 int io_error;
 int checksum_len;
+dev_t filesystem_dev; /* used to implement -x */
+unsigned int file_struct_len;
 
 static char empty_sum[MD4_SUM_LENGTH];
 static int flist_count_offset;
-static unsigned int file_struct_len;
+static int max_dir_depth = 0;
 
 static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
 static void output_flist(struct file_list *flist);
@@ -342,16 +346,14 @@ static void send_file_entry(struct file_struct *file, int f)
 		flags |= XMIT_SAME_MODE;
 	else
 		mode = file->mode;
-	if (preserve_devices) {
+	if ((preserve_devices && IS_DEVICE(mode))
+	 || (preserve_specials && IS_SPECIAL(mode))) {
 		if (protocol_version < 28) {
-			if (IS_DEVICE(mode)) {
-				if (file->u.rdev == rdev)
-					flags |= XMIT_SAME_RDEV_pre28;
-				else
-					rdev = file->u.rdev;
-			} else
-				rdev = makedev(0, 0);
-		} else if (IS_DEVICE(mode)) {
+			if (file->u.rdev == rdev)
+				flags |= XMIT_SAME_RDEV_pre28;
+			else
+				rdev = file->u.rdev;
+		} else {
 			rdev = file->u.rdev;
 			if ((uint32)major(rdev) == rdev_major)
 				flags |= XMIT_SAME_RDEV_MAJOR;
@@ -360,7 +362,8 @@ static void send_file_entry(struct file_struct *file, int f)
 			if ((uint32)minor(rdev) <= 0xFFu)
 				flags |= XMIT_RDEV_MINOR_IS_SMALL;
 		}
-	}
+	} else if (protocol_version < 28)
+		rdev = makedev(0, 0);
 	if (file->uid == uid)
 		flags |= XMIT_SAME_UID;
 	else
@@ -436,7 +439,8 @@ static void send_file_entry(struct file_struct *file, int f)
 			add_gid(gid);
 		write_int(f, gid);
 	}
-	if (preserve_devices && IS_DEVICE(mode)) {
+	if ((preserve_devices && IS_DEVICE(mode))
+	 || (preserve_specials && IS_SPECIAL(mode))) {
 		if (protocol_version < 28) {
 			if (!(flags & XMIT_SAME_RDEV_pre28))
 				write_int(f, (int)rdev);
@@ -576,14 +580,12 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
 	if (preserve_gid && !(flags & XMIT_SAME_GID))
 		gid = (gid_t)read_int(f);
 
-	if (preserve_devices) {
+	if ((preserve_devices && IS_DEVICE(mode))
+	 || (preserve_specials && IS_SPECIAL(mode))) {
 		if (protocol_version < 28) {
-			if (IS_DEVICE(mode)) {
-				if (!(flags & XMIT_SAME_RDEV_pre28))
-					rdev = (dev_t)read_int(f);
-			} else
-				rdev = makedev(0, 0);
-		} else if (IS_DEVICE(mode)) {
+			if (!(flags & XMIT_SAME_RDEV_pre28))
+				rdev = (dev_t)read_int(f);
+		} else {
 			uint32 rdev_minor;
 			if (!(flags & XMIT_SAME_RDEV_MAJOR))
 				rdev_major = read_int(f);
@@ -593,7 +595,8 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
 				rdev_minor = read_int(f);
 			rdev = makedev(rdev_major, rdev_minor);
 		}
-	}
+	} else if (protocol_version < 28)
+		rdev = makedev(0, 0);
 
 #ifdef SUPPORT_LINKS
 	if (preserve_links && S_ISLNK(mode)) {
@@ -618,7 +621,6 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
 	memset(bp, 0, file_struct_len);
 	bp += file_struct_len;
 
-	file->flags = 0;
 	file->modtime = modtime;
 	file->length = file_length;
 	file->mode = mode;
@@ -633,6 +635,8 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
 		bp[-1] = '\0';
 		lastdir_depth = count_dir_elements(lastdir);
 		file->dir.depth = lastdir_depth + 1;
+		if (lastdir_depth >= max_dir_depth)
+			max_dir_depth = lastdir_depth + 1;
 	} else if (dirname) {
 		file->dirname = dirname; /* we're reusing lastname */
 		file->dir.depth = lastdir_depth + 1;
@@ -646,13 +650,14 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
 			in_del_hier = recurse;
 			del_hier_name_len = file->dir.depth == 0 ? 0 : l1 + l2;
 			if (relative_paths && del_hier_name_len > 2
-			    && basename_len == 1+1 && *basename == '.')
+			    && lastname[del_hier_name_len-1] == '.'
+			    && lastname[del_hier_name_len-2] == '/')
 				del_hier_name_len -= 2;
 			file->flags |= FLAG_TOP_DIR | FLAG_DEL_HERE;
 		} else if (in_del_hier) {
 			if (!relative_paths || !del_hier_name_len
 			 || (l1 >= del_hier_name_len
-			  && thisname[del_hier_name_len] == '/'))
+			  && lastname[del_hier_name_len] == '/'))
 				file->flags |= FLAG_DEL_HERE;
 			else
 				in_del_hier = 0;
@@ -663,7 +668,8 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
 	memcpy(bp, basename, basename_len);
 	bp += basename_len;
 
-	if (preserve_devices && IS_DEVICE(mode))
+	if ((preserve_devices && IS_DEVICE(mode))
+	 || (preserve_specials && IS_SPECIAL(mode)))
 		file->u.rdev = rdev;
 
 #ifdef SUPPORT_LINKS
@@ -807,24 +813,16 @@ struct file_struct *make_file(char *fname, struct file_list *flist,
 	/* We only care about directories because we need to avoid recursing
 	 * into a mount-point directory, not to avoid copying a symlinked
 	 * file if -L (or similar) was specified. */
-	if (one_file_system && S_ISDIR(st.st_mode) && !(flags & FLAG_TOP_DIR)) {
-		STRUCT_STAT st2;
-		unsigned int len = strlcat(thisname, "/..", sizeof thisname);
-		/* If the directory's .. dir is on a different filesystem,
-		 * either mark this dir as a mount-point or skip it. */
-		if (len < sizeof thisname && do_stat(thisname, &st2) == 0
-		 && (st.st_dev != st2.st_dev || st.st_ino != st2.st_ino)) {
-			if (one_file_system > 1) {
-				if (verbose > 2) {
-					rprintf(FINFO,
-					    "skipping mount-point dir %s\n",
-					    thisname);
-				}
-				return NULL;
+	if (one_file_system && st.st_dev != filesystem_dev
+	 && S_ISDIR(st.st_mode)) {
+		if (one_file_system > 1) {
+			if (verbose > 2) {
+				rprintf(FINFO, "skipping mount-point dir %s\n",
+					thisname);
 			}
-			flags |= FLAG_MOUNT_POINT;
+			return NULL;
 		}
-		thisname[len-3] = '\0';
+		flags |= FLAG_MOUNT_POINT;
 	}
 
 	if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level))
@@ -923,7 +921,8 @@ struct file_struct *make_file(char *fname, struct file_list *flist,
 	bp += basename_len;
 
 #ifdef HAVE_STRUCT_STAT_ST_RDEV
-	if (preserve_devices && IS_DEVICE(st.st_mode))
+	if ((preserve_devices && IS_DEVICE(st.st_mode))
+	 || (preserve_specials && IS_SPECIAL(st.st_mode)))
 		file->u.rdev = st.st_rdev;
 #endif
 
@@ -1281,6 +1280,9 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 			}
 		}
 
+		if (one_file_system)
+			filesystem_dev = st.st_dev;
+
 		if (recurse || (xfer_dirs && is_dot_dir)) {
 			struct file_struct *file;
 			file = send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR);
@@ -1327,8 +1329,6 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 	 * without causing a compatibility problem with older versions. */
 	clean_flist(flist, 0, 0);
 
-	/* Now send the uid/gid list. This was introduced in
-	 * protocol version 15 */
 	send_uid_list(f);
 
 	/* send the io_error flag */
@@ -1398,8 +1398,6 @@ struct file_list *recv_file_list(int f)
 	clean_flist(flist, relative_paths, 1);
 
 	if (f >= 0) {
-		/* Now send the uid/gid list. This was introduced in
-		 * protocol version 15 */
 		recv_uid_list(f, flist);
 
 		/* Recv the io_error flag */
@@ -1546,6 +1544,20 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
 
 		if (!file->basename)
 			continue;
+
+		if (strip_root && file->dirname) {
+			/* We need to strip off the leading slashes for
+			 * relative paths, but this must be done _after_
+			 * the sorting phase (above). */
+			if (*file->dirname == '/') {
+				char *s = file->dirname + 1;
+				while (*s == '/') s++;
+				memmove(file->dirname, s, strlen(s) + 1);
+			}
+			if (!*file->dirname)
+				file->dirname = NULL;
+		}
+
 		if (f_name_cmp(file, flist->files[prev_i]) == 0)
 			j = prev_i;
 		else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
@@ -1558,6 +1570,7 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
 			file->mode = save_mode;
 		} else
 			j = -1;
+
 		if (j >= 0) {
 			struct file_struct *fp = flist->files[j];
 			int keep, drop;
@@ -1576,8 +1589,8 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
 					"removing duplicate name %s from file list (%d)\n",
 					f_name(file, NULL), drop);
 			}
-			/* Make sure that if we unduplicate '.', that we don't
-			 * lose track of a user-specified top directory. */
+			/* Make sure we don't lose track of a user-specified
+			 * top directory. */
 			flist->files[keep]->flags |= flist->files[drop]->flags
 						   & (FLAG_TOP_DIR|FLAG_DEL_HERE);
 
@@ -1597,23 +1610,45 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
 	}
 	flist->high = no_dups ? prev_i : flist->count - 1;
 
-	if (strip_root) {
-		/* We need to strip off the leading slashes for relative
-		 * paths, but this must be done _after_ the sorting phase. */
+	if (skip_empty_dirs && no_dups && max_dir_depth) {
+		int j, cur_depth = 0;
+		int *maybe_dirs = new_array(int, max_dir_depth);
+
+		maybe_dirs[0] = -1;
+
 		for (i = flist->low; i <= flist->high; i++) {
 			struct file_struct *file = flist->files[i];
 
-			if (!file->dirname)
-				continue;
-			if (*file->dirname == '/') {
-				char *s = file->dirname + 1;
-				while (*s == '/') s++;
-				memmove(file->dirname, s, strlen(s) + 1);
+			if (S_ISDIR(file->mode) && file->dir.depth) {
+				j = cur_depth;
+				cur_depth = file->dir.depth - 1;
+				for ( ; j >= cur_depth; j--) {
+					if (maybe_dirs[j] < 0)
+						continue;
+					clear_file(maybe_dirs[j], flist);
+				}
+				maybe_dirs[cur_depth] = i;
+			} else if (maybe_dirs[cur_depth] >= 0) {
+				for (j = 0; j <= cur_depth; j++)
+					maybe_dirs[j] = -1;
 			}
+		}
+		for (j = cur_depth; j >= 0; j--) {
+			if (maybe_dirs[j] < 0)
+				continue;
+			clear_file(maybe_dirs[j], flist);
+		}
 
-			if (!*file->dirname)
-				file->dirname = NULL;
+		for (i = flist->low; i <= flist->high; i++) {
+			if (flist->files[i]->basename)
+				break;
+		}
+		flist->low = i;
+		for (i = flist->high; i >= flist->low; i--) {
+			if (flist->files[i]->basename)
+				break;
 		}
+		flist->high = i;
 	}
 }