server: Add support for opening a new file handle from a mapping object.
diff --git a/server/file.c b/server/file.c
index 8cf474b..ce95576 100644
--- a/server/file.c
+++ b/server/file.c
@@ -141,6 +141,31 @@
return file;
}
+/* create a file by duplicating an fd object */
+struct file *create_file_for_fd_obj( struct fd *fd, unsigned int access, unsigned int sharing )
+{
+ struct file *file;
+ struct stat st;
+
+ if (fstat( get_unix_fd(fd), &st ) == -1)
+ {
+ file_set_error();
+ return NULL;
+ }
+
+ if ((file = alloc_object( &file_ops )))
+ {
+ file->mode = st.st_mode;
+ file->access = default_fd_map_access( &file->obj, access );
+ if (!(file->fd = dup_fd_object( fd, access, sharing, FILE_SYNCHRONOUS_IO_NONALERT )))
+ {
+ release_object( file );
+ return NULL;
+ }
+ }
+ return file;
+}
+
static struct object *create_file_obj( struct fd *fd, unsigned int access, mode_t mode )
{
struct file *file = alloc_object( &file_ops );
