+ if (!list_only && flist->used) {
+ int i, ndx_count = 0;
+ int32 *ndx_list;
+
+ if (!(ndx_list = new_array(int32, flist->used)))
+ out_of_memory("match_hard_links");
+
+ for (i = 0; i < flist->used; i++) {
+ if (F_IS_HLINKED(flist->sorted[i]))
+ ndx_list[ndx_count++] = i;
+ }
+
+ hlink_flist = flist;
+
+ if (ndx_count)
+ match_gnums(ndx_list, ndx_count);
+
+ free(ndx_list);
+ }
+ if (protocol_version < 30)
+ idev_destroy();
+}
+
+static int maybe_hard_link(struct file_struct *file, int ndx,
+ char *fname, int statret, stat_x *sxp,
+ const char *oldname, STRUCT_STAT *old_stp,
+ const char *realname, int itemizing, enum logcode code)
+{
+ if (statret == 0) {
+ if (sxp->st.st_dev == old_stp->st_dev
+ && sxp->st.st_ino == old_stp->st_ino) {
+ if (itemizing) {
+ itemize(fname, file, ndx, statret, sxp,
+ ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
+ 0, "");
+ }
+ if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
+ rprintf(FCLIENT, "%s is uptodate\n", fname);
+ file->flags |= FLAG_HLINK_DONE;
+ return 0;
+ }
+ }
+
+ if (atomic_create(file, fname, oldname, MAKEDEV(0, 0), sxp, statret == 0 ? DEL_FOR_FILE : 0)) {
+ if (itemizing) {
+ itemize(fname, file, ndx, statret, sxp,
+ ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS, 0,
+ realname);
+ }
+ if (code != FNONE && INFO_GTE(NAME, 1))
+ rprintf(code, "%s => %s\n", fname, realname);
+ return 0;
+ }
+
+ return -1;
+}
+
+/* Figure out if a prior entry is still there or if we just have a
+ * cached name for it. */
+static char *check_prior(struct file_struct *file, int gnum,
+ int *prev_ndx_p, struct file_list **flist_p)
+{
+ struct file_struct *fp;
+ struct ht_int32_node *node;
+ int prev_ndx = F_HL_PREV(file);
+
+ while (1) {
+ struct file_list *flist;
+ if (prev_ndx < 0
+ || (flist = flist_for_ndx(prev_ndx, NULL)) == NULL)
+ break;
+ fp = flist->files[prev_ndx - flist->ndx_start];
+ if (!(fp->flags & FLAG_SKIP_HLINK)) {
+ *prev_ndx_p = prev_ndx;
+ *flist_p = flist;
+ return NULL;
+ }
+ F_HL_PREV(file) = prev_ndx = F_HL_PREV(fp);
+ }
+
+ if (inc_recurse
+ && (node = hashtable_find(prior_hlinks, gnum, 0)) != NULL) {
+ assert(node->data != NULL);
+ if (CVAL(node->data, 0) != 0) {
+ *prev_ndx_p = -1;
+ *flist_p = NULL;
+ return node->data;
+ }
+ /* The prior file must have been skipped. */
+ F_HL_PREV(file) = -1;
+ }
+
+ *prev_ndx_p = -1;
+ *flist_p = NULL;
+ return NULL;
+}
+
+/* Only called if FLAG_HLINKED is set and FLAG_HLINK_FIRST is not. Returns:
+ * 0 = process the file, 1 = skip the file, -1 = error occurred. */
+int hard_link_check(struct file_struct *file, int ndx, char *fname,
+ int statret, stat_x *sxp, int itemizing,
+ enum logcode code)
+{
+ STRUCT_STAT prev_st;
+ char namebuf[MAXPATHLEN], altbuf[MAXPATHLEN];
+ char *realname, *prev_name;
+ struct file_list *flist;
+ int gnum = inc_recurse ? F_HL_GNUM(file) : -1;
+ int prev_ndx;
+
+ prev_name = realname = check_prior(file, gnum, &prev_ndx, &flist);
+
+ if (!prev_name) {
+ struct file_struct *prev_file;
+
+ if (!flist) {
+ /* The previous file was skipped, so this one is
+ * treated as if it were the first in its group. */
+ if (DEBUG_GTE(HLINK, 2)) {
+ rprintf(FINFO, "hlink for %d (%s,%d): virtual first\n",
+ ndx, f_name(file, NULL), gnum);
+ }
+ return 0;
+ }
+
+ prev_file = flist->files[prev_ndx - flist->ndx_start];
+
+ /* Is the previous link not complete yet? */
+ if (!(prev_file->flags & FLAG_HLINK_DONE)) {
+ /* Is the previous link being transferred? */
+ if (prev_file->flags & FLAG_FILE_SENT) {
+ /* Add ourselves to the list of files that will
+ * be updated when the transfer completes, and
+ * mark ourself as waiting for the transfer. */
+ F_HL_PREV(file) = F_HL_PREV(prev_file);
+ F_HL_PREV(prev_file) = ndx;
+ file->flags |= FLAG_FILE_SENT;
+ cur_flist->in_progress++;
+ if (DEBUG_GTE(HLINK, 2)) {
+ rprintf(FINFO, "hlink for %d (%s,%d): waiting for %d\n",
+ ndx, f_name(file, NULL), gnum, F_HL_PREV(file));
+ }
+ return 1;
+ }
+ if (DEBUG_GTE(HLINK, 2)) {
+ rprintf(FINFO, "hlink for %d (%s,%d): looking for a leader\n",
+ ndx, f_name(file, NULL), gnum);
+ }
+ return 0;
+ }
+
+ /* There is a finished file to link with! */
+ if (!(prev_file->flags & FLAG_HLINK_FIRST)) {
+ /* The previous previous is FIRST when prev is not. */
+ prev_name = realname = check_prior(prev_file, gnum, &prev_ndx, &flist);
+ /* Update our previous pointer to point to the FIRST. */
+ F_HL_PREV(file) = prev_ndx;
+ }
+
+ if (!prev_name) {
+ int alt_dest;
+
+ assert(flist != NULL);
+ prev_file = flist->files[prev_ndx - flist->ndx_start];
+ /* F_HL_PREV() is alt_dest value when DONE && FIRST. */
+ alt_dest = F_HL_PREV(prev_file);
+ if (DEBUG_GTE(HLINK, 2)) {
+ rprintf(FINFO, "hlink for %d (%s,%d): found flist match (alt %d)\n",
+ ndx, f_name(file, NULL), gnum, alt_dest);
+ }
+
+ if (alt_dest >= 0 && dry_run) {
+ pathjoin(namebuf, MAXPATHLEN, basis_dir[alt_dest],
+ f_name(prev_file, NULL));
+ prev_name = namebuf;
+ realname = f_name(prev_file, altbuf);
+ } else {
+ prev_name = f_name(prev_file, namebuf);
+ realname = prev_name;
+ }
+ }
+ }
+
+ if (DEBUG_GTE(HLINK, 2)) {
+ rprintf(FINFO, "hlink for %d (%s,%d): leader is %d (%s)\n",
+ ndx, f_name(file, NULL), gnum, prev_ndx, prev_name);
+ }
+
+ if (link_stat(prev_name, &prev_st, 0) < 0) {
+ if (!dry_run || errno != ENOENT) {
+ rsyserr(FERROR_XFER, errno, "stat %s failed", full_fname(prev_name));
+ return -1;
+ }
+ /* A new hard-link will get a new dev & inode, so approximate
+ * those values in dry-run mode by zeroing them. */
+ memset(&prev_st, 0, sizeof prev_st);
+ }
+
+ if (statret < 0 && basis_dir[0] != NULL) {
+ /* If we match an alt-dest item, we don't output this as a change. */
+ char cmpbuf[MAXPATHLEN];
+ stat_x alt_sx;
+ int j = 0;
+ init_stat_x(&alt_sx);
+ do {
+ pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
+ if (link_stat(cmpbuf, &alt_sx.st, 0) < 0)
+ continue;
+ if (link_dest) {
+ if (prev_st.st_dev != alt_sx.st.st_dev
+ || prev_st.st_ino != alt_sx.st.st_ino)
+ continue;
+ statret = 1;
+ if (stdout_format_has_i == 0
+ || (!INFO_GTE(NAME, 2) && stdout_format_has_i < 2)) {
+ itemizing = 0;
+ code = FNONE;
+ if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
+ rprintf(FCLIENT, "%s is uptodate\n", fname);
+ }
+ break;
+ }
+ if (!unchanged_file(cmpbuf, file, &alt_sx.st))
+ continue;
+ statret = 1;
+ if (unchanged_attrs(cmpbuf, file, &alt_sx))
+ break;
+ } while (basis_dir[++j] != NULL);
+ if (statret == 1) {
+ sxp->st = alt_sx.st;
+#ifdef SUPPORT_ACLS
+ if (preserve_acls && !S_ISLNK(file->mode)) {
+ free_acl(sxp);
+ if (!ACL_READY(alt_sx))
+ get_acl(cmpbuf, sxp);
+ else {
+ sxp->acc_acl = alt_sx.acc_acl;
+ sxp->def_acl = alt_sx.def_acl;
+ alt_sx.acc_acl = alt_sx.def_acl = NULL;
+ }
+ }
+#endif
+#ifdef SUPPORT_XATTRS
+ if (preserve_xattrs) {
+ free_xattr(sxp);
+ if (!XATTR_READY(alt_sx))
+ get_xattr(cmpbuf, sxp);
+ else {
+ sxp->xattr = alt_sx.xattr;
+ alt_sx.xattr = NULL;
+ }
+ }
+#endif
+ } else {
+#ifdef SUPPORT_ACLS
+ if (preserve_acls)
+ free_acl(&alt_sx);