-@@ -48,6 +48,7 @@ extern int preserve_hard_links;
- extern int need_messages_from_generator;
- extern int delete_mode, delete_before, delete_during, delete_after;
- extern int delete_excluded;
+@@ -41,6 +41,7 @@ extern int checksum_seed;
+ extern int basis_dir_cnt;
+ extern int prune_empty_dirs;
+ extern int protocol_version;
- extern int make_backups;
- extern char *shell_cmd; /* contains VER.SUB string if client is a pre-release */
- extern char *backup_dir, *backup_suffix;
-@@ -205,7 +206,7 @@ void setup_protocol(int f_out,int f_in)
- } else if (protocol_version >= 30) {
- if (recurse && allow_inc_recurse && !preserve_hard_links
- && !delete_before && !delete_after && !delay_updates
-- && !prune_empty_dirs)
-+ && !prune_empty_dirs && !detect_renamed)
- inc_recurse = 1;
- need_messages_from_generator = 1;
- }
+ extern int protect_args;
+ extern int preserve_uid;
+ extern int preserve_gid;
+@@ -108,6 +109,7 @@ void set_allow_inc_recurse(void)
+ allow_inc_recurse = 0;
+ else if (!am_sender
+ && (delete_before || delete_after
++ || detect_renamed
+ || delay_updates || prune_empty_dirs))
+ allow_inc_recurse = 0;
+ else if (am_server && !local_server
static void send_directory(int f, struct file_list *flist,
char *fbuf, int len, int flags);
static void send_directory(int f, struct file_list *flist,
char *fbuf, int len, int flags);
-@@ -1855,6 +1897,25 @@ struct file_list *send_file_list(int f,
- if (verbose > 2)
- rprintf(FINFO, "send_file_list done\n");
+@@ -2154,6 +2196,25 @@ struct file_list *recv_file_list(int f)
+
+ clean_flist(flist, relative_paths);
+ the_fattr_list.files = new_array(struct file_struct *, j);
+ if (!the_fattr_list.files)
+ out_of_memory("recv_file_list");
+ the_fattr_list.files = new_array(struct file_struct *, j);
+ if (!the_fattr_list.files)
+ out_of_memory("recv_file_list");
extern int backup_suffix_len;
extern struct file_list *cur_flist, *first_flist, *dir_flist;
extern struct filter_list_struct server_filter_list;
extern int backup_suffix_len;
extern struct file_list *cur_flist, *first_flist, *dir_flist;
extern struct filter_list_struct server_filter_list;
static int deldelay_size = 0, deldelay_cnt = 0;
static char *deldelay_buf = NULL;
static int deldelay_fd = -1;
static int deldelay_size = 0, deldelay_cnt = 0;
static char *deldelay_buf = NULL;
static int deldelay_fd = -1;
+ if (fmid->modtime == f->modtime
+ && f_name_cmp(fmid, f) == 0)
+ return -1; /* assume we can't help */
+ if (fmid->modtime == f->modtime
+ && f_name_cmp(fmid, f) == 0)
+ return -1; /* assume we can't help */
-+ /* We only use the file if we can hard-link it into our tmp dir. */
-+ if (link(fname, partialptr) == 0) {
-+ if (verbose > 2) {
-+ rprintf(FINFO, "found renamed: %s => %s\n",
-+ fname, partialptr);
++ if (!dry_run) {
++ if ((partialptr = partial_dir_fname(fn)) == NULL
++ || !handle_partial_dir(partialptr, PDIR_CREATE))
++ return;
++ /* We only use the file if we can hard-link it into our tmp dir. */
++ if (link(fname, partialptr) != 0) {
++ if (errno != EEXIST)
++ handle_partial_dir(partialptr, PDIR_DELETE);
++ return;
* its contents, otherwise just checks for content. Returns DR_SUCCESS or
* DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
* buffer is used for recursion, but returned unchanged.)
* its contents, otherwise just checks for content. Returns DR_SUCCESS or
* DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
* buffer is used for recursion, but returned unchanged.)
* all the --delete-WHEN options. Note that the fbuf pointer must point to a
* MAXPATHLEN buffer with the name of the directory in it (the functions we
* call will append names onto the end, but the old dir value will be restored
* all the --delete-WHEN options. Note that the fbuf pointer must point to a
* MAXPATHLEN buffer with the name of the directory in it (the functions we
* call will append names onto the end, but the old dir value will be restored
-@@ -433,21 +559,28 @@ static void delete_in_dir(char *fbuf, st
+ change_local_filter_dir(NULL, 0, 0);
+@@ -432,21 +559,28 @@ static void delete_in_dir(char *fbuf, st
+ *p++ = '/';
+ remainder = MAXPATHLEN - (p - fbuf);
+
/* If an item in dirlist is not found in flist, delete it
* from the filesystem. */
+ *p++ = '/';
+ remainder = MAXPATHLEN - (p - fbuf);
+
/* If an item in dirlist is not found in flist, delete it
* from the filesystem. */
- for (i = dirlist->count; i--; ) {
-@@ -469,16 +607,23 @@ static void delete_in_dir(char *fbuf, st
+ for (i = dirlist->used; i--; ) {
+@@ -468,16 +610,25 @@ static void delete_in_dir(char *fbuf, st
+ if (detect_renamed && real_ret != 0)
+ unexplored_dirs++;
+ delete_in_dir(fname, file, &real_sx.st.st_dev,
+ if (detect_renamed && real_ret != 0)
+ unexplored_dirs++;
+ delete_in_dir(fname, file, &real_sx.st.st_dev,
-@@ -1898,7 +2060,7 @@ void generate_files(int f_out, const cha
- dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
- } else
- dirdev = MAKEDEV(0, 0);
-- delete_in_dir(f_name(fp, fbuf), fp, &dirdev);
-+ delete_in_dir(f_name(fp, fbuf), fp, &dirdev, 0);
+@@ -2014,7 +2182,7 @@ void generate_files(int f_out, const cha
+ dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
+ } else
+ dirdev = MAKEDEV(0, 0);
+- delete_in_dir(f_name(fp, fbuf), fp, &dirdev);
++ delete_in_dir(f_name(fp, fbuf), fp, &dirdev, 0);
+ }
rprintf(F," --modify-window=NUM compare mod-times with reduced accuracy\n");
rprintf(F," -T, --temp-dir=DIR create temporary files in directory DIR\n");
rprintf(F," -y, --fuzzy find similar file for basis if no dest file\n");
rprintf(F," --modify-window=NUM compare mod-times with reduced accuracy\n");
rprintf(F," -T, --temp-dir=DIR create temporary files in directory DIR\n");
rprintf(F," -y, --fuzzy find similar file for basis if no dest file\n");
rprintf(F," --compare-dest=DIR also compare destination files relative to DIR\n");
rprintf(F," --copy-dest=DIR ... and include copies of unchanged files\n");
rprintf(F," --link-dest=DIR hardlink to files in DIR when unchanged\n");
rprintf(F," --compare-dest=DIR also compare destination files relative to DIR\n");
rprintf(F," --copy-dest=DIR ... and include copies of unchanged files\n");
rprintf(F," --link-dest=DIR hardlink to files in DIR when unchanged\n");
{"compare-dest", 0, POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
{"copy-dest", 0, POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
{"link-dest", 0, POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
+ {"detect-renamed", 0, POPT_ARG_NONE, &detect_renamed, 0, 0, 0 },
{"fuzzy", 'y', POPT_ARG_NONE, &fuzzy_basis, 0, 0, 0 },
{"compress", 'z', POPT_ARG_NONE, 0, 'z', 0, 0 },
{"compare-dest", 0, POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
{"copy-dest", 0, POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
{"link-dest", 0, POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
+ {"detect-renamed", 0, POPT_ARG_NONE, &detect_renamed, 0, 0, 0 },
{"fuzzy", 'y', POPT_ARG_NONE, &fuzzy_basis, 0, 0, 0 },
{"compress", 'z', POPT_ARG_NONE, 0, 'z', 0, 0 },
- {"compress-level", 0, POPT_ARG_INT, &def_compress_level, 'z', 0, 0 },
-@@ -1472,7 +1475,7 @@ int parse_arguments(int *argc, const cha
+ {"no-compress", 0, POPT_ARG_VAL, &do_compression, 0, 0, 0 },
+@@ -1532,7 +1535,7 @@ int parse_arguments(int *argc_p, const c
snprintf(err_buf, sizeof err_buf,
"--%s cannot be used with --%s\n",
append_mode ? "append" : "inplace",
snprintf(err_buf, sizeof err_buf,
"--%s cannot be used with --%s\n",
append_mode ? "append" : "inplace",
--modify-window=NUM compare mod-times with reduced accuracy
-T, --temp-dir=DIR create temporary files in directory DIR
-y, --fuzzy find similar file for basis if no dest file
--modify-window=NUM compare mod-times with reduced accuracy
-T, --temp-dir=DIR create temporary files in directory DIR
-y, --fuzzy find similar file for basis if no dest file
--compare-dest=DIR also compare received files relative to DIR
--copy-dest=DIR ... and include copies of unchanged files
--link-dest=DIR hardlink to files in DIR when unchanged
--compare-dest=DIR also compare received files relative to DIR
--copy-dest=DIR ... and include copies of unchanged files
--link-dest=DIR hardlink to files in DIR when unchanged
-+dit(bf(--detect-renamed)) This option tells rsync to scan the receiving
-+side for files that have been renamed, and to use any that are found as
-+alternate basis files to help speed up the transfer.
++dit(bf(--detect-renamed)) With this option, for each new source file
++(call it em(src/S)), rsync looks for a file em(dest/D) anywhere in the
++destination that passes the quick check with em(src/S). If such a em(dest/D)
++is found, rsync uses it as an alternate basis for transferring em(S). The
++idea is that if em(src/S) was renamed from em(src/D) (as opposed to em(src/S)
++passing the quick check with em(dest/D) by coincidence), the delta-transfer
++algorithm will find that all the data matches between em(src/S) and em(dest/D),
++and the transfer will be really fast.
++
+By default, alternate-basis files are hard-linked into a directory named
+".~tmp~" in each file's destination directory, but if you've specified
+the bf(--partial-dir) option, that directory will be used instead. These
+By default, alternate-basis files are hard-linked into a directory named
+".~tmp~" in each file's destination directory, but if you've specified
+the bf(--partial-dir) option, that directory will be used instead. These