From a55aa395c79a83a72037444bef363a58eba73822 Mon Sep 17 00:00:00 2001
From: Laurent Vivier <Laurent@lvivier.info>
Date: Wed, 23 Nov 2005 00:09:00 +0000
Subject: [PATCH] Add stream_fstat()

---
 libstream/Makefile       |  2 +-
 libstream/libstream.h    |  7 +++++++
 libstream/stream_fstat.c | 15 +++++++++++++++
 libstream/stream_open.c  | 17 +++++++++++------
 4 files changed, 34 insertions(+), 7 deletions(-)
 create mode 100644 libstream/stream_fstat.c

diff --git a/libstream/Makefile b/libstream/Makefile
index b782fed..4b425e4 100644
--- a/libstream/Makefile
+++ b/libstream/Makefile
@@ -13,7 +13,7 @@ CPPFLAGS = -I$(TOP)/../libfloppy -I$(TOP)/../libscsi -I$(TOP)/../libblock \
 LIBRARY = libstream.a
 
 SOURCES = stream_close.c stream_open.c stream_read.c stream_lseek.c \
-	  stream_uncompress.c gzio.c
+	  stream_uncompress.c gzio.c stream_fstat.c
 
 HEADERS = libstream.h
 
diff --git a/libstream/libstream.h b/libstream/libstream.h
index e84cc35..98a01b9 100644
--- a/libstream/libstream.h
+++ b/libstream/libstream.h
@@ -9,11 +9,16 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+struct stream_stat {
+	off_t st_size;
+};
+
 typedef int (*stream_read_sector_t)(void *data,off_t offset, void* buffer, size_t size);
 typedef ssize_t (*stream_read_t)(void *data, void *buf, size_t count);
 typedef int (*stream_lseek_t)(void *data, long offset, int whence);
 typedef int (*stream_close_t)(void *data);
 typedef int (*stream_umount_t)(void *data);
+typedef int (*stream_fstat_t)(void *data, struct stream_stat *buf);
 
 typedef struct {
 	void *data;
@@ -28,6 +33,7 @@ typedef struct {
 	stream_lseek_t lseek;
 	stream_close_t close;
 	stream_umount_t umount;
+	stream_fstat_t fstat;
 } filesystem_io_t;
 
 typedef struct {
@@ -47,4 +53,5 @@ extern int stream_read(stream_t *stream, void *buf, size_t count);
 extern int stream_lseek(stream_t *stream, long offset, int whence);
 extern int stream_close(stream_t *stream);
 extern int stream_uncompress(stream_t *stream);
+extern int stream_fstat(stream_t *stream, struct stream_stat *buf);
 #endif /* __LIBSTREAM_H__ */
diff --git a/libstream/stream_fstat.c b/libstream/stream_fstat.c
new file mode 100644
index 0000000..59a1f6a
--- /dev/null
+++ b/libstream/stream_fstat.c
@@ -0,0 +1,15 @@
+/*
+ *
+ * (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
+ *
+ */
+
+#include "libstream.h"
+
+int stream_fstat(stream_t *stream, struct stream_stat *buf)
+{
+	if (stream->fs.fstat == NULL)
+		return -1;
+
+	return stream->fs.fstat(stream->fs.file, buf);
+}
diff --git a/libstream/stream_open.c b/libstream/stream_open.c
index 0256c06..c6a191e 100644
--- a/libstream/stream_open.c
+++ b/libstream/stream_open.c
@@ -160,17 +160,21 @@ stream_t *stream_open(char *dev)
 		case fs_BLOCK:
 			if (stream->fs.data == NULL)
 				goto outfs;
-			stream->fs.read = block_read;
-			stream->fs.seek = block_seek;
-			stream->fs.close = block_close;
+			stream->fs.read = (stream_read_t)block_read;
+			stream->fs.seek = (stream_lseek_t)block_seek;
+			stream->fs.close = (stream_close_t)block_close;
+			stream->fs.umount = (stream_umount_t)block_umount;
+			stream->fs.fstat = (stream_fstat_t)block_fstat;
 			break;
 		case fs_CONTAINER:
 			stream->fs.data = container_open(&stream->device, current);
 			if (stream->fs.data == NULL)
 				goto outfs;
-			stream->fs.read = container_read;
-			stream->fs.seek = container_seek;
-			stream->fs.close = container_close;
+			stream->fs.read = (stream_read_t)container_read;
+			stream->fs.seek = (stream_lseek_t)container_seek;
+			stream->fs.close = (stream_close_t)container_close;
+			stream->fs.umount = (stream_umount_t)container_umount;
+			stream->fs.fstat = (stream_fstat_t)container_fstat;
 			break;
 #endif
 		case fs_ISO9660:
@@ -190,6 +194,7 @@ stream_t *stream_open(char *dev)
 			stream->fs.lseek = (stream_lseek_t)iso9660_lseek;
 			stream->fs.close = (stream_close_t)iso9660_close;
 			stream->fs.umount = (stream_umount_t)iso9660_umount;
+			stream->fs.fstat = (stream_fstat_t)iso9660_fstat;
 			break;
 		default:
 outfs: