X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/13710874ce907cd9405f83814cbebbe73f884e2e..6e0bf4d840c8718e832bde6ffb34470f2167047d:/hlink.c

diff --git a/hlink.c b/hlink.c
index 6dde2cc0..536b571f 100644
--- a/hlink.c
+++ b/hlink.c
@@ -4,7 +4,7 @@
  * 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
@@ -24,6 +24,7 @@
 
 extern int verbose;
 extern int dry_run;
+extern int list_only;
 extern int am_sender;
 extern int inc_recurse;
 extern int do_xfers;
@@ -34,11 +35,9 @@ extern int protocol_version;
 extern int remove_source_files;
 extern int stdout_format_has_i;
 extern int maybe_ATTRS_REPORT;
+extern int unsort_ndx;
 extern char *basis_dir[];
 extern struct file_list *cur_flist;
-#ifdef ICONV_OPTION
-extern int ic_ndx;
-#endif
 
 #ifdef SUPPORT_HARD_LINKS
 
@@ -126,12 +125,16 @@ static void match_gnums(int32 *ndx_list, int ndx_count)
 				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 {
@@ -144,12 +147,10 @@ static void match_gnums(int32 *ndx_list, int ndx_count)
 			if (gnum != gnum_next)
 				break;
 			F_HL_PREV(file) = prev;
-			/* The linked list must use raw ndx values. */
-#ifdef ICONV_OPTION
-			if (ic_ndx)
+			/* The linked list uses over-the-wire ndx values. */
+			if (unsort_ndx)
 				prev = F_NDX(file);
 			else
-#endif
 				prev = ndx_list[from] + hlink_flist->ndx_start;
 		}
 		if (prev < 0 && !inc_recurse) {
@@ -163,11 +164,9 @@ static void match_gnums(int32 *ndx_list, int ndx_count)
 		file->flags |= FLAG_HLINK_LAST;
 		F_HL_PREV(file) = prev;
 		if (inc_recurse && CVAL(node->data, 0) == 0) {
-#ifdef ICONV_OPTION
-			if (ic_ndx)
+			if (unsort_ndx)
 				prev = F_NDX(file);
 			else
-#endif
 				prev = ndx_list[from] + hlink_flist->ndx_start;
 			SIVAL(node->data, 1, prev);
 		}
@@ -180,23 +179,25 @@ static void match_gnums(int32 *ndx_list, int ndx_count)
  * to first when we're done. */
 void match_hard_links(struct file_list *flist)
 {
-	int i, ndx_count = 0;
-	int32 *ndx_list;
+	if (!list_only) {
+		int i, ndx_count = 0;
+		int32 *ndx_list;
 
-	if (!(ndx_list = new_array(int32, flist->used)))
-		out_of_memory("match_hard_links");
+		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;
-	}
+		for (i = 0; i < flist->used; i++) {
+			if (F_IS_HLINKED(flist->sorted[i]))
+				ndx_list[ndx_count++] = i;
+		}
 
-	hlink_flist = flist;
+		hlink_flist = flist;
 
-	if (ndx_count)
-		match_gnums(ndx_list, ndx_count);
+		if (ndx_count)
+			match_gnums(ndx_list, ndx_count);
 
-	free(ndx_list);
+		free(ndx_list);
+	}
 	if (protocol_version < 30)
 		idev_destroy();
 }
@@ -223,7 +224,7 @@ static int maybe_hard_link(struct file_struct *file, int ndx,
 			if (!make_backup(fname))
 				return -1;
 		} else if (robust_unlink(fname)) {
-			rsyserr(FERROR, errno, "unlink %s failed",
+			rsyserr(FERROR_XFER, errno, "unlink %s failed",
 				full_fname(fname));
 			return -1;
 		}
@@ -243,20 +244,45 @@ static int maybe_hard_link(struct file_struct *file, int ndx,
 }
 
 /* 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 file_list *flist;
 	struct ht_int32_node *node;
+	int prev_ndx = F_HL_PREV(file);
 
-	if (flist) {
-		*flist_p = flist;
-		return NULL;
+	while (1) {
+		if (prev_ndx < 0) {
+			*prev_ndx_p = prev_ndx;
+			*flist_p = NULL;
+			return NULL;
+		}
+		if ((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);
+
+	if (CVAL(node->data, 0) == 0) {
+		/* The prior file must have been skipped. */
+		F_HL_PREV(file) = prev_ndx = -1;
+		*prev_ndx_p = prev_ndx;
+		*flist_p = NULL;
+		return NULL;
+	}
+
+	*prev_ndx_p = prev_ndx;
+	*flist_p = flist;
 	return node->data;
 }
 
@@ -271,20 +297,28 @@ int hard_link_check(struct file_struct *file, int ndx, const char *fname,
 	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;
@@ -297,8 +331,8 @@ int hard_link_check(struct file_struct *file, int ndx, const char *fname,
 		/* 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;
 		}
@@ -323,7 +357,7 @@ int hard_link_check(struct file_struct *file, int ndx, const char *fname,
 	}
 
 	if (link_stat(prev_name, &prev_st, 0) < 0) {
-		rsyserr(FERROR, errno, "stat %s failed",
+		rsyserr(FERROR_XFER, errno, "stat %s failed",
 			full_fname(prev_name));
 		return -1;
 	}
@@ -345,7 +379,8 @@ int hard_link_check(struct file_struct *file, int ndx, const char *fname,
 				 || prev_st.st_ino != alt_sx.st.st_ino)
 					continue;
 				statret = 1;
-				if (verbose < 2 || !stdout_format_has_i) {
+				if (stdout_format_has_i == 0
+				 || (verbose < 2 && stdout_format_has_i < 2)) {
 					itemizing = 0;
 					code = FNONE;
 					if (verbose > 1 && maybe_ATTRS_REPORT)
@@ -395,10 +430,10 @@ int hard_link_one(struct file_struct *file, const char *fname,
 		enum logcode code;
 		if (terse) {
 			if (!verbose)
-				return -1;
+				return 0;
 			code = FINFO;
 		} else
-			code = FERROR;
+			code = FERROR_XFER;
 		rsyserr(code, errno, "link %s => %s failed",
 			full_fname(fname), oldname);
 		return 0;
@@ -422,7 +457,7 @@ void finish_hard_link(struct file_struct *file, const char *fname, int fin_ndx,
 
 	if (stp == NULL && prev_ndx >= 0) {
 		if (link_stat(fname, &st, 0) < 0) {
-			rsyserr(FERROR, errno, "stat %s failed",
+			rsyserr(FERROR_XFER, errno, "stat %s failed",
 				full_fname(fname));
 			return;
 		}
@@ -476,4 +511,25 @@ void finish_hard_link(struct file_struct *file, const char *fname, int fin_ndx,
 			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