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Commit 11d06b2a authored by Al Viro's avatar Al Viro
Browse files

Kill unsharing fs_struct in __set_personality() 



That's a rudiment of altroot support.  I.e. it should've been buried
a long time ago.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 15f7176e

kernel/exec_domain.c

+0 −22
Original line number Diff line number Diff line
@@ -145,28 +145,6 @@ __set_personality(u_long personality) 
		return 0;

	}



	if (atomic_read(&current->fs->count) != 1) {

		struct fs_struct *fsp, *ofsp;



		fsp = copy_fs_struct(current->fs);

		if (fsp == NULL) {

			module_put(ep->module);

			return -ENOMEM;

		}



		task_lock(current);

		ofsp = current->fs;

		current->fs = fsp;

		task_unlock(current);



		put_fs_struct(ofsp);

	}



	/*

	 * At that point we are guaranteed to be the sole owner of

	 * current->fs.

	 */



	current->personality = personality;

	oep = current_thread_info()->exec_domain;

	current_thread_info()->exec_domain = ep;