Commit 8d4c3e76 authored by Jens Axboe's avatar Jens Axboe
Browse files

proc: don't allow async path resolution of /proc/self components 



If this is attempted by a kthread, then return -EOPNOTSUPP as we don't
currently support that. Once we can get task_pid_ptr() doing the right
thing, then this can go away again.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 88ec3211

fs/proc/self.c

+7 −0
Original line number Diff line number Diff line
@@ -16,6 +16,13 @@ static const char *proc_self_get_link(struct dentry *dentry, 
	pid_t tgid = task_tgid_nr_ns(current, ns);

	char *name;



	/*

	 * Not currently supported. Once we can inherit all of struct pid,

	 * we can allow this.

	 */

	if (current->flags & PF_KTHREAD)

		return ERR_PTR(-EOPNOTSUPP);



	if (!tgid)

		return ERR_PTR(-ENOENT);

	/* max length of unsigned int in decimal + NULL term */

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