* Copyright (C) 1996 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2004-2007 Wayne Davison
+ * Copyright (C) 2004-2008 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
prev = -1;
} else if (CVAL(node->data, 0) == 0) {
struct file_list *flist;
- struct file_struct *fp;
prev = IVAL(node->data, 1);
flist = flist_for_ndx(prev);
- assert(flist != NULL);
- fp = flist->files[prev - flist->ndx_start];
- fp->flags &= ~FLAG_HLINK_LAST;
+ if (flist)
+ flist->files[prev - flist->ndx_start]->flags &= ~FLAG_HLINK_LAST;
+ else {
+ /* We skipped all prior files in this
+ * group, so mark this as a "first". */
+ file->flags |= FLAG_HLINK_FIRST;
+ prev = -1;
+ }
} else
prev = -1;
} else {
if (gnum != gnum_next)
break;
F_HL_PREV(file) = prev;
- /* The linked list must use raw ndx values. */
+ /* The linked list uses over-the-wire ndx values. */
if (unsort_ndx)
prev = F_NDX(file);
else
}
/* Figure out if a prior entry is still there or if we just have a
- * cached name for it. Never called with a FLAG_HLINK_FIRST entry. */
-static char *check_prior(int prev_ndx, int gnum, struct file_list **flist_p)
+ * 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_list *flist = flist_for_ndx(prev_ndx);
+ struct file_struct *fp;
struct ht_int32_node *node;
+ int prev_ndx = F_HL_PREV(file);
- if (flist) {
- *flist_p = flist;
- return NULL;
+ while (1) {
+ struct file_list *flist;
+ if (prev_ndx < 0
+ || (flist = flist_for_ndx(prev_ndx)) == 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);
}
- node = hashtable_find(prior_hlinks, gnum, 0);
- assert(node != NULL && node->data);
- assert(CVAL(node->data, 0) != 0);
- return node->data;
+ if ((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:
char *realname, *prev_name;
struct file_list *flist;
int gnum = inc_recurse ? F_HL_GNUM(file) : -1;
- int prev_ndx = F_HL_PREV(file);
+ int prev_ndx;
- prev_name = realname = check_prior(prev_ndx, gnum, &flist);
+ prev_name = realname = check_prior(file, gnum, &prev_ndx, &flist);
if (!prev_name) {
- struct file_struct *prev_file = flist->files[prev_ndx - flist->ndx_start];
+ 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. */
+ return 0;
+ }
+
+ prev_file = flist->files[prev_ndx - flist->ndx_start];
- /* Is the previous link is not complete yet? */
+ /* 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. */
+ /* 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;
/* 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_ndx = F_HL_PREV(prev_file);
- prev_name = realname = check_prior(prev_ndx, gnum, &flist);
+ prev_name = realname = check_prior(prev_file, gnum, &prev_ndx, &flist);
+ assert(prev_name != NULL || flist != NULL);
/* Update our previous pointer to point to the FIRST. */
F_HL_PREV(file) = prev_ndx;
}
enum logcode code;
if (terse) {
if (!verbose)
- return -1;
+ return 0;
code = FINFO;
} else
code = FERROR_XFER;
out_of_memory("finish_hard_link");
}
}
+
+int skip_hard_link(struct file_struct *file, struct file_list **flist_p)
+{
+ struct file_list *flist;
+ int prev_ndx;
+
+ file->flags |= FLAG_SKIP_HLINK;
+ if (!(file->flags & FLAG_HLINK_LAST))
+ return -1;
+
+ check_prior(file, F_HL_GNUM(file), &prev_ndx, &flist);
+ if (prev_ndx >= 0) {
+ file = flist->files[prev_ndx - flist->ndx_start];
+ if (file->flags & (FLAG_HLINK_DONE|FLAG_FILE_SENT))
+ return -1;
+ file->flags |= FLAG_HLINK_LAST;
+ *flist_p = flist;
+ }
+
+ return prev_ndx;
+}
#endif