A patch from Stefan Müller to add the --downdate option, which works
in the opposite manner as --update.
+To use this patch, run these commands for a successful build:
+
+ patch -p1 <patches/downdate.diff
+ ./configure (optional if already run)
+ make
+
--- old/generator.c
+++ new/generator.c
-@@ -53,6 +53,7 @@ extern int ignore_errors;
- extern int remove_sent_files;
+@@ -54,6 +54,7 @@ extern int ignore_errors;
+ extern int remove_source_files;
extern int delay_updates;
extern int update_only;
+extern int downdate_only;
extern int ignore_existing;
extern int ignore_non_existing;
extern int inplace;
-@@ -1133,6 +1134,13 @@ static void recv_generator(char *fname,
- return;
+@@ -1528,6 +1529,13 @@ static void recv_generator(char *fname,
+ 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;
-@@ -1430,7 +1438,7 @@ 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 */
+@@ -1825,6 +1833,7 @@ void check_for_finished_files(int itemiz
+ 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;
+@@ -1850,6 +1859,7 @@ void check_for_finished_files(int itemiz
+ 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;
--- old/options.c
+++ new/options.c
-@@ -56,6 +56,7 @@ int preserve_gid = 0;
+@@ -57,6 +57,7 @@ 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;
-@@ -291,6 +292,7 @@ void usage(enum logcode F)
+@@ -318,6 +319,7 @@ 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");
-@@ -461,6 +463,7 @@ static struct poptOption long_options[]
+ rprintf(F," --append-verify like --append, but with old data in file checksum\n");
+@@ -522,6 +524,7 @@ 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 },
{"update", 'u', POPT_ARG_NONE, &update_only, 0, 0, 0 },