1 files changed, 133 insertions, 0 deletions

diff --git a/qemu/roms/openbios/fs/iso9660/iso9660_opendir.c b/qemu/roms/openbios/fs/iso9660/iso9660_opendir.c
new file mode 100644
index 000000000..49eab4b42
--- /dev/null
+++ b/qemu/roms/openbios/fs/iso9660/iso9660_opendir.c
@@ -0,0 +1,133 @@
+/*
+ *
+ * (c) 2005-2009 Laurent Vivier <Laurent@vivier.eu>
+ *
+ * This file has been copied from EMILE, http://emile.sf.net
+ *
+ */
+
+#include "libiso9660.h"
+
+static inline int iso9660_is_directory(struct iso_directory_record * idr)
+{
+	return ((idr->flags[0] & 2) != 0);
+}
+
+static iso9660_DIR* iso9660_opendir_node(iso9660_VOLUME *volume, struct iso_directory_record *node)
+{
+	iso9660_DIR *dir;
+
+	dir = (iso9660_DIR*)malloc(sizeof(iso9660_DIR));
+	if (dir == NULL)
+		return NULL;
+
+	dir->extent = isonum_733((char *)node->extent);
+	dir->len = isonum_733((char *)node->size);
+	dir->index =  sizeof (dir->buffer);
+	dir->volume = volume;
+
+	return dir;
+}
+
+static struct iso_directory_record* idr_new(struct iso_directory_record* idr)
+{
+	struct iso_directory_record* result;
+	int size = sizeof(*idr) + (int)idr->name_len[0];
+
+	result = (struct iso_directory_record*)malloc(size);
+	memcpy(result, idr, size);
+
+	return result;
+}
+
+static struct iso_directory_record * seek_name(iso9660_VOLUME *volume,
+					       struct iso_directory_record *idr,
+					       char *name)
+{
+	struct iso_directory_record *result;
+	char name_buf[256];
+	iso9660_DIR *dir;
+
+	dir = iso9660_opendir_node(volume, idr);
+	if (dir == NULL)
+		return NULL;
+
+	while ((idr = iso9660_readdir(dir)) != NULL)
+	{
+		iso9660_name(volume, idr, name_buf);
+		if (strcasecmp(name, name_buf) == 0)
+		{
+			result = idr_new(idr);
+			iso9660_closedir(dir);
+			return result;
+		}
+	}
+	iso9660_closedir(dir);
+	return NULL;
+}
+
+struct iso_directory_record* iso9660_get_node(
+		iso9660_VOLUME *volume,
+		struct iso_directory_record *dirnode,
+		const char *path)
+{
+	struct iso_directory_record* result;
+	struct iso_directory_record* current;
+	char name[256];
+	int i;
+
+	current = idr_new(dirnode);
+	while(1)
+	{
+		/* ignore head '\' */
+
+		while (*path && *path == '\\')
+			path++;
+
+		if (*path == 0)
+			break;
+
+		/* extract first path component */
+
+		i = 0;
+		while (*path && *path != '\\')
+			name[i++] = *path++;
+		name[i] = 0;
+
+		/* seek first component in current directory */
+
+		result = seek_name(volume, current, name);
+		if (result == NULL)
+			return NULL;
+
+		free(current);
+		current = result;
+	}
+	return current;
+}
+
+iso9660_DIR* iso9660_opendir(iso9660_VOLUME *volume, const char *name)
+{
+	iso9660_DIR *dir;
+	struct iso_directory_record *node;
+
+	node = iso9660_get_root_node((iso9660_VOLUME*)volume);
+	if (node == NULL)
+		return NULL;
+
+	node = iso9660_get_node((iso9660_VOLUME*)volume, node, name);
+	if (node == NULL)
+		return NULL;
+	if (!iso9660_is_directory(node)) {
+		free(node);
+		return NULL;
+	}
+
+	dir = iso9660_opendir_node((iso9660_VOLUME*)volume, node);
+
+	free(node);
+
+	dir->volume = (iso9660_VOLUME*)volume;
+
+	return dir;
+}