./configure (optional if already run)
make
---- old/flist.c
-+++ new/flist.c
-@@ -1193,7 +1193,8 @@ struct file_struct *make_file(const char
- }
+diff --git a/flist.c b/flist.c
+--- a/flist.c
++++ b/flist.c
+@@ -1239,7 +1239,8 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
+ memcpy(bp + basename_len, linkname, linkname_len);
#endif
- if (always_checksum && am_sender && S_ISREG(st.st_mode))
+ && !get_sum_xattr(thisname, &st, tmp_sum))
file_checksum(thisname, tmp_sum, st.st_size);
- F_PATHNAME(file) = pathname;
---- old/generator.c
-+++ new/generator.c
-@@ -627,7 +627,8 @@ int unchanged_file(char *fn, struct file
+ if (am_sender)
+diff --git a/generator.c b/generator.c
+--- a/generator.c
++++ b/generator.c
+@@ -718,7 +718,8 @@ int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
of the file time to determine whether to sync */
if (always_checksum > 0 && S_ISREG(st->st_mode)) {
char sum[MAX_DIGEST_LEN];
return memcmp(sum, F_SUM(file), checksum_len) == 0;
}
---- old/support/xsums
-+++ new/support/xsums
+diff --git a/support/xsums b/support/xsums
+new file mode 100644
+--- /dev/null
++++ b/support/xsums
@@ -0,0 +1,118 @@
+#!/usr/bin/perl -w
+use strict;
+ -h, --help Display this help message.
+EOT
+}
---- old/xattrs.c
-+++ new/xattrs.c
-@@ -31,6 +31,8 @@ extern int am_generator;
- extern int read_only;
+diff --git a/xattrs.c b/xattrs.c
+--- a/xattrs.c
++++ b/xattrs.c
+@@ -33,6 +33,8 @@ extern int read_only;
extern int list_only;
+ extern int preserve_xattrs;
extern int checksum_seed;
+extern int checksum_len;
+extern int protocol_version;
#define RSYNC_XAL_INITIAL 5
#define RSYNC_XAL_LIST_INITIAL 100
-@@ -62,7 +64,8 @@ extern int checksum_seed;
- #define RPRE_LEN ((int)sizeof RSYNC_PREFIX - 1)
-
- #define XSTAT_ATTR RSYNC_PREFIX "%stat"
--#define XSTAT_LEN ((int)sizeof XSTAT_ATTR - 1)
-+#define MD4_ATTR RSYNC_PREFIX "%md4"
-+#define MD5_ATTR RSYNC_PREFIX "%md5"
+@@ -68,6 +70,10 @@ extern int checksum_seed;
+ #define XACC_ACL_ATTR RSYNC_PREFIX "%" XACC_ACL_SUFFIX
+ #define XDEF_ACL_SUFFIX "dacl"
+ #define XDEF_ACL_ATTR RSYNC_PREFIX "%" XDEF_ACL_SUFFIX
++#define MD4_SUFFIX "md4"
++#define MD4_ATTR RSYNC_PREFIX "%" MD4_SUFFIX
++#define MD5_SUFFIX "md5"
++#define MD5_ATTR RSYNC_PREFIX "%" MD5_SUFFIX
typedef struct {
char *datum, *name;
-@@ -223,8 +226,8 @@ static int rsync_xal_get(const char *fna
- continue;
- #endif
-
-- if (am_root < 0 && name_len == XSTAT_LEN + 1
-- && name[RPRE_LEN] == '%' && strcmp(name, XSTAT_ATTR) == 0)
-+ if (name_len > RPRE_LEN && name[RPRE_LEN] == '%'
-+ && HAS_PREFIX(name, RSYNC_PREFIX))
- continue;
-
- datum_len = name_len; /* Pass extra size to get_xattr_data() */
-@@ -636,8 +639,8 @@ void receive_xattr(struct file_struct *f
- continue;
+@@ -238,7 +244,9 @@ static int rsync_xal_get(const char *fname, item_list *xalp)
+ || (am_root < 0
+ && (strcmp(name+RPRE_LEN+1, XSTAT_SUFFIX) == 0
+ || strcmp(name+RPRE_LEN+1, XACC_ACL_SUFFIX) == 0
+- || strcmp(name+RPRE_LEN+1, XDEF_ACL_SUFFIX) == 0)))
++ || strcmp(name+RPRE_LEN+1, XDEF_ACL_SUFFIX) == 0
++ || strcmp(name+RPRE_LEN+1, MD4_SUFFIX) == 0
++ || strcmp(name+RPRE_LEN+1, MD5_SUFFIX) == 0)))
+ continue;
}
- #endif
-- if (am_root < 0 && name_len == XSTAT_LEN + 1
-- && name[RPRE_LEN] == '%' && strcmp(name, XSTAT_ATTR) == 0) {
-+ if (name_len > RPRE_LEN && name[RPRE_LEN] == '%'
-+ && HAS_PREFIX(name, RSYNC_PREFIX)) {
- free(ptr);
- continue;
- }
-@@ -795,6 +798,39 @@ int set_xattr(const char *fname, const s
- return rsync_xal_set(fname, lst + ndx, fnamecmp, sxp);
+
+@@ -886,6 +894,39 @@ int del_def_xattr_acl(const char *fname)
}
+ #endif
+int get_sum_xattr(const char *fname, STRUCT_STAT *stp, char *sum)
+{
+ if (len < 0) {
+ if (errno == ENOTSUP || errno == ENOATTR)
+ return 0;
-+ rsyserr(FERROR, errno, "failed to read xattr %s for %s",
++ rsyserr(FERROR_XFER, errno, "failed to read xattr %s for %s",
+ mdattr, full_fname(fname));
+ return 0;
+ }