./configure (optional if already run)
make
---- old/generator.c
-+++ new/generator.c
-@@ -53,6 +53,7 @@ extern int ignore_errors;
+diff --git a/generator.c b/generator.c
+--- a/generator.c
++++ b/generator.c
+@@ -56,6 +56,7 @@ extern int ignore_errors;
extern int remove_source_files;
extern int delay_updates;
extern int update_only;
extern int ignore_existing;
extern int ignore_non_existing;
extern int inplace;
-@@ -1144,6 +1145,13 @@ static void recv_generator(char *fname,
- return;
+@@ -1669,6 +1670,13 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
+ goto cleanup;
}
+ if (downdate_only && statret == 0
-+ && cmp_time(st.st_mtime, file->modtime) < 0) {
++ && cmp_time(sx.st.st_mtime, file->modtime) < 0) {
+ if (verbose > 1)
+ rprintf(FINFO, "%s is older\n", fname);
+ return;
fnamecmp = fname;
fnamecmp_type = FNAMECMP_FNAME;
-@@ -1452,7 +1460,7 @@ void generate_files(int f_out, struct fi
- phase++;
- csum_length = SUM_LENGTH;
- max_size = min_size = ignore_existing = ignore_non_existing = 0;
-- update_only = always_checksum = size_only = 0;
-+ downdate_only = update_only = always_checksum = size_only = 0;
- ignore_times = 1;
- if (append_mode) /* resend w/o append mode */
- append_mode = -1; /* ... but only longer files */
---- old/options.c
-+++ new/options.c
-@@ -56,6 +56,7 @@ int preserve_gid = 0;
+@@ -1985,6 +1993,7 @@ void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
+ ignore_existing = -ignore_existing;
+ ignore_non_existing = -ignore_non_existing;
+ update_only = -update_only;
++ downdate_only = -downdate_only;
+ always_checksum = -always_checksum;
+ size_only = -size_only;
+ append_mode = -append_mode;
+@@ -2010,6 +2019,7 @@ void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
+ ignore_existing = -ignore_existing;
+ ignore_non_existing = -ignore_non_existing;
+ update_only = -update_only;
++ downdate_only = -downdate_only;
+ always_checksum = -always_checksum;
+ size_only = -size_only;
+ append_mode = -append_mode;
+diff --git a/options.c b/options.c
+--- a/options.c
++++ b/options.c
+@@ -59,6 +59,7 @@ int preserve_uid = 0;
+ int preserve_gid = 0;
int preserve_times = 0;
- int omit_dir_times = 0;
int update_only = 0;
+int downdate_only = 0;
int cvs_exclude = 0;
int dry_run = 0;
int do_xfers = 1;
-@@ -293,6 +294,7 @@ void usage(enum logcode F)
+@@ -325,6 +326,7 @@ void usage(enum logcode F)
rprintf(F," --backup-dir=DIR make backups into hierarchy based in DIR\n");
rprintf(F," --suffix=SUFFIX set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
rprintf(F," -u, --update skip files that are newer on the receiver\n");
+ rprintf(F," -w, --downdate skip files that are older on the receiver\n");
rprintf(F," --inplace update destination files in-place (SEE MAN PAGE)\n");
rprintf(F," --append append data onto shorter files\n");
- rprintf(F," -d, --dirs transfer directories without recursing\n");
-@@ -465,6 +467,7 @@ static struct poptOption long_options[]
- {"size-only", 0, POPT_ARG_NONE, &size_only, 0, 0, 0 },
- {"one-file-system", 'x', POPT_ARG_NONE, 0, 'x', 0, 0 },
+ rprintf(F," --append-verify like --append, but with old data in file checksum\n");
+@@ -531,6 +533,7 @@ static struct poptOption long_options[] = {
+ {"no-one-file-system",'x',POPT_ARG_VAL, &one_file_system, 0, 0, 0 },
+ {"no-x", 'x', POPT_ARG_VAL, &one_file_system, 0, 0, 0 },
{"update", 'u', POPT_ARG_NONE, &update_only, 0, 0, 0 },
+ {"downdate", 'w', POPT_ARG_NONE, &downdate_only, 0, 0, 0 },
{"existing", 0, POPT_ARG_NONE, &ignore_non_existing, 0, 0, 0 },