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Diffstat (limited to 'qemu/roms/openbios/fs/ext2/ext2_lseek.c')
-rw-r--r--qemu/roms/openbios/fs/ext2/ext2_lseek.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/qemu/roms/openbios/fs/ext2/ext2_lseek.c b/qemu/roms/openbios/fs/ext2/ext2_lseek.c
new file mode 100644
index 000000000..e837d89b4
--- /dev/null
+++ b/qemu/roms/openbios/fs/ext2/ext2_lseek.c
@@ -0,0 +1,38 @@
+/*
+ *
+ * (c) 2008-2009 Laurent Vivier <Laurent@lvivier.info>
+ *
+ * This file has been copied from EMILE, http://emile.sf.net
+ *
+ */
+
+#include "libext2.h"
+#include "ext2.h"
+
+int ext2_lseek(ext2_FILE *file, long offset, int whence)
+{
+ long new_offset;
+
+ switch(whence)
+ {
+ case SEEK_SET:
+ new_offset = offset;
+ break;
+ case SEEK_CUR:
+ new_offset = file->offset + offset;
+ break;
+ case SEEK_END:
+ new_offset = file->inode->i_size + offset;
+ break;
+ default:
+ return -1;
+ }
+
+ if ( (new_offset < 0) ||
+ (new_offset > file->inode->i_size) )
+ return -1;
+
+ file->offset = new_offset;
+
+ return new_offset;
+}