X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Flookup_table.c;h=d3bc8b248e85bcbac805744b30639db8a6d11d14;hb=034fd063f956d0806e557680a36a69a42556a776;hp=f320e2dde128fa58d932a41f8cd96f276019eadb;hpb=b61e9afca45dacd9baefbcfa17dbea2af75259b8;p=wimlib

diff --git a/src/lookup_table.c b/src/lookup_table.c
index f320e2dd..d3bc8b24 100644
--- a/src/lookup_table.c
+++ b/src/lookup_table.c
@@ -365,6 +365,14 @@ int read_lookup_table(WIMStruct *w)
 			ret = WIMLIB_ERR_INVALID_LOOKUP_TABLE_ENTRY;
 			goto out_free_cur_entry;
 		}
+		if ((cur_entry->resource_entry.flags & WIM_RESHDR_FLAG_METADATA)
+		    && cur_entry->refcnt != 1)
+		{
+			ERROR("Found metadata resource with refcnt != 1:");
+			print_lookup_table_entry(cur_entry);
+			ret = WIMLIB_ERR_INVALID_LOOKUP_TABLE_ENTRY;
+			goto out_free_cur_entry;
+		}
 		lookup_table_insert(table, cur_entry);
 
 	}
@@ -410,6 +418,33 @@ int write_lookup_table_entry(struct lookup_table_entry *lte, void *__out)
 	return 0;
 }
 
+/* Writes the lookup table to the output file. */
+int write_lookup_table(struct lookup_table *table, FILE *out,
+		       struct resource_entry *out_res_entry)
+{
+	off_t start_offset, end_offset;
+	int ret;
+
+	start_offset = ftello(out);
+	if (start_offset == -1)
+		return WIMLIB_ERR_WRITE;
+
+	ret = for_lookup_table_entry(table, write_lookup_table_entry, out);
+	if (ret != 0)
+		return ret;
+
+	end_offset = ftello(out);
+	if (end_offset == -1)
+		return WIMLIB_ERR_WRITE;
+
+	out_res_entry->offset        = start_offset;
+	out_res_entry->size          = end_offset - start_offset;
+	out_res_entry->original_size = end_offset - start_offset;
+	out_res_entry->flags         = WIM_RESHDR_FLAG_METADATA;
+
+	return 0;
+}
+
 
 int lte_zero_real_refcnt(struct lookup_table_entry *lte, void *ignore)
 {
@@ -591,7 +626,7 @@ out:
 }
 #endif
 
-static void inode_resolve_ltes(struct inode *inode, struct lookup_table *table)
+void inode_resolve_ltes(struct inode *inode, struct lookup_table *table)
 {
 	struct lookup_table_entry *lte;
 
@@ -651,6 +686,24 @@ int dentry_unresolve_ltes(struct dentry *dentry, void *ignore)
 	return 0;
 }
 
+/*
+ * Returns the lookup table entry for stream @stream_idx of the inode, where
+ * stream_idx = 0 means the default un-named file stream, and stream_idx >= 1
+ * corresponds to an alternate data stream.
+ *
+ * This works for both resolved and un-resolved dentries.
+ */
+struct lookup_table_entry *
+inode_stream_lte(const struct inode *inode, unsigned stream_idx,
+		 const struct lookup_table *table)
+{
+	if (inode->resolved)
+		return inode_stream_lte_resolved(inode, stream_idx);
+	else
+		return inode_stream_lte_unresolved(inode, stream_idx, table);
+}
+
+
 /* Return the lookup table entry for the unnamed data stream of an inode, or
  * NULL if there is none.
  *
@@ -669,7 +722,7 @@ int dentry_unresolve_ltes(struct dentry *dentry, void *ignore)
  */
 struct lookup_table_entry *
 inode_unnamed_lte(const struct inode *inode,
-		   const struct lookup_table *table)
+		  const struct lookup_table *table)
 {
 	if (inode->resolved)
 		return inode_unnamed_lte_resolved(inode);
@@ -677,3 +730,16 @@ inode_unnamed_lte(const struct inode *inode,
 		return inode_unnamed_lte_unresolved(inode, table);
 }
 
+static int lte_add_stream_size(struct lookup_table_entry *lte,
+			       void *total_bytes_p)
+{
+	*(u64*)total_bytes_p += lte->resource_entry.size;
+	return 0;
+}
+
+u64 lookup_table_total_stream_size(struct lookup_table *table)
+{
+	u64 total_size = 0;
+	for_lookup_table_entry(table, lte_add_stream_size, &total_size);
+	return total_size;
+}