Fixed several issues with preserving xattrs when using --backup.

[rsync/rsync.git] / xattrs.c

diff --git a/xattrs.c b/xattrs.c
index 552a63b..b6a82e4 100644 (file)
--- a/xattrs.c
+++ b/xattrs.c
@@ -288,6 +288,48 @@ int get_xattr(const char *fname, stat_x *sxp)
        return 0;
 }
 
+int copy_xattrs(const char *source, const char *dest)
+{
+       ssize_t list_len, name_len;
+       size_t datum_len;
+       char *name, *ptr;
+#ifdef HAVE_LINUX_XATTRS
+       int user_only = am_sender ? 0 : !am_root;
+#endif
+
+       /* This puts the name list into the "namebuf" buffer. */
+       if ((list_len = get_xattr_names(source)) < 0)
+               return -1;
+
+       for (name = namebuf; list_len > 0; name += name_len) {
+               name_len = strlen(name) + 1;
+               list_len -= name_len;
+
+#ifdef HAVE_LINUX_XATTRS
+               /* We always ignore the system namespace, and non-root
+                * ignores everything but the user namespace. */
+               if (user_only ? !HAS_PREFIX(name, USER_PREFIX)
+                             : HAS_PREFIX(name, SYSTEM_PREFIX))
+                       continue;
+#endif
+
+               datum_len = 0;
+               if (!(ptr = get_xattr_data(source, name, &datum_len, 0)))
+                       return -1;
+               if (sys_lsetxattr(dest, name, ptr, datum_len) < 0) {
+                       int save_errno = errno ? errno : EINVAL;
+                       rsyserr(FERROR_XFER, errno,
+                               "rsync_xal_set: lsetxattr(\"%s\",\"%s\") failed",
+                               dest, name);
+                       errno = save_errno;
+                       return -1;
+               }
+               free(ptr);
+       }
+
+       return 0;
+}
+
 static int find_matching_xattr(item_list *xalp)
 {
        size_t i, j;