diff --git a/flist.c b/flist.c
--- a/flist.c
+++ b/flist.c
-@@ -70,6 +70,7 @@ extern int need_unsorted_flist;
+@@ -71,6 +71,7 @@ extern int sender_symlink_iconv;
extern int unsort_ndx;
extern struct stats stats;
extern char *filesfrom_host;
extern char curr_dir[MAXPATHLEN];
-@@ -824,7 +825,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
- extra_len += (S_ISDIR(mode) ? 2 : 1) * EXTRA_LEN;
+@@ -844,7 +845,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
+ extra_len += EXTRA_LEN;
#endif
- if (always_checksum && S_ISREG(mode))
+ if ((always_checksum || link_by_hash_dir) && S_ISREG(mode))
extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
- if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
+ #if SIZEOF_INT64 >= 8
diff --git a/hashlink.c b/hashlink.c
new file mode 100644
--- /dev/null
diff --git a/options.c b/options.c
--- a/options.c
+++ b/options.c
-@@ -156,6 +156,7 @@ char *backup_suffix = NULL;
+@@ -157,6 +157,7 @@ char *backup_suffix = NULL;
char *tmpdir = NULL;
char *partial_dir = NULL;
char *basis_dir[MAX_BASIS_DIRS+1];
char *config_file = NULL;
char *shell_cmd = NULL;
char *logfile_name = NULL;
-@@ -393,6 +394,7 @@ void usage(enum logcode F)
+@@ -394,6 +395,7 @@ void usage(enum logcode F)
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," -z, --compress compress file data during the transfer\n");
rprintf(F," --compress-level=NUM explicitly set compression level\n");
rprintf(F," --skip-compress=LIST skip compressing files with a suffix in LIST\n");
-@@ -445,7 +447,7 @@ enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
+@@ -446,7 +448,7 @@ enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
OPT_SERVER, OPT_REFUSED_BASE = 9000};
static struct poptOption long_options[] = {
-@@ -570,6 +572,7 @@ static struct poptOption long_options[] = {
+@@ -578,6 +580,7 @@ static struct poptOption long_options[] = {
{"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 },
+ {"link-by-hash", 0, POPT_ARG_STRING, 0, OPT_LINK_BY_HASH, 0, 0},
- {"fuzzy", 'y', POPT_ARG_NONE, &fuzzy_basis, 0, 0, 0 },
- {"compress", 'z', POPT_ARG_NONE, 0, 'z', 0, 0 },
- {"no-compress", 0, POPT_ARG_VAL, &do_compression, 0, 0, 0 },
-@@ -1244,6 +1247,21 @@ int parse_arguments(int *argc_p, const char ***argv_p, int frommain)
+ {"fuzzy", 'y', POPT_ARG_VAL, &fuzzy_basis, 1, 0, 0 },
+ {"no-fuzzy", 0, POPT_ARG_VAL, &fuzzy_basis, 0, 0, 0 },
+ {"no-y", 0, POPT_ARG_VAL, &fuzzy_basis, 0, 0, 0 },
+@@ -1260,6 +1263,21 @@ int parse_arguments(int *argc_p, const char ***argv_p)
return 0;
#endif
+#ifdef HAVE_LINK
+ arg = poptGetOptArg(pc);
+ if (sanitize_paths)
-+ arg = sanitize_path(NULL, arg, NULL, 0);
++ arg = sanitize_path(NULL, arg, NULL, 0, SP_DEFAULT);
+ link_by_hash_dir = (char *)arg;
+ break;
+#else
default:
/* A large opt value means that set_refuse_options()
* turned this option off. */
-@@ -1997,6 +2015,11 @@ void server_options(char **args, int *argc_p)
+@@ -2036,6 +2054,11 @@ void server_options(char **args, int *argc_p)
} else if (inplace)
args[ac++] = "--inplace";
diff --git a/rsync.c b/rsync.c
--- a/rsync.c
+++ b/rsync.c
-@@ -49,6 +49,7 @@ extern int inplace;
+@@ -48,6 +48,7 @@ extern int inplace;
extern int flist_eof;
extern int keep_dirlinks;
extern int make_backups;
extern struct file_list *cur_flist, *first_flist, *dir_flist;
extern struct chmod_mode_struct *daemon_chmod_modes;
#ifdef ICONV_OPTION
-@@ -536,8 +537,15 @@ int finish_transfer(const char *fname, const char *fnametmp,
+@@ -575,8 +576,15 @@ int finish_transfer(const char *fname, const char *fnametmp,
/* move tmp file over real file */
if (verbose > 2)
rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
diff --git a/rsync.h b/rsync.h
--- a/rsync.h
+++ b/rsync.h
-@@ -818,6 +818,14 @@ struct stats {
+@@ -830,6 +830,14 @@ struct stats {
int num_transferred_files;
};