Support --sparse combined with --preallocate or --inplace.

The new code tries to punch holes in the destination file using newer
Linux fallocate features. It also supports a --whole-file + --sparse +
--inplace copy on any filesystem by truncating the destination file.

1 files changed, 1 insertions, 9 deletions

diff --git a/options.c b/options.c
index 308443bd..6ba13b7d 100644
--- a/options.c
+++ b/options.c
@@ -714,7 +714,7 @@ void usage(enum logcode F)
 #ifdef SUPPORT_XATTRS
   rprintf(F,"     --fake-super            store/recover privileged attrs using xattrs\n");
 #endif
-  rprintf(F," -S, --sparse                handle sparse files efficiently\n");
+  rprintf(F," -S, --sparse                turn sequences of nulls into sparse blocks\n");
 #ifdef SUPPORT_PREALLOCATION
   rprintf(F,"     --preallocate           allocate dest files before writing them\n");
 #else
@@ -2237,14 +2237,6 @@ int parse_arguments(int *argc_p, const char ***argv_p)
 			bwlimit_writemax = 512;
 	}
 
-	if (sparse_files && inplace) {
-		/* Note: we don't check for this below, because --append is
-		 * OK with --sparse (as long as redos are handled right). */
-		snprintf(err_buf, sizeof err_buf,
-			 "--sparse cannot be used with --inplace\n");
-		return 0;
-	}
-
 	if (append_mode) {
 		if (whole_file > 0) {
 			snprintf(err_buf, sizeof err_buf,