linux-kernel - [PATCH] utsns: fix !CONFIG_UTS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070323200039.GA15775@sergelap.austin.ibm.com>
Date:	Fri, 23 Mar 2007 15:00:39 -0500
From:	"Serge E. Hallyn" <serue@...ibm.com>
To:	lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] utsns: fix !CONFIG_UTS_NS behavior

From: "Serge E. Hallyn" <serue@...ibm.com>
Subject: [PATCH] utsns: fix !CONFIG_UTS_NS behavior

When CONFIG_UTS_NS=n, clone(CLONE_NEWUTS) quietly refuses.  So correctly does
not unshare a new uts namespace, but also does not return -EINVAL.

Fix this to return -EINVAL so the caller knows his request was denied.

Signed-off-by: Serge E. Hallyn <serue@...ibm.com>

---

 include/linux/utsname.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

bc350994ac67df8f1b917f9979c065d87757eabe
diff --git a/include/linux/utsname.h b/include/linux/utsname.h
index a4555fe..e10267d 100644
--- a/include/linux/utsname.h
+++ b/include/linux/utsname.h
@@ -70,6 +70,8 @@ static inline int unshare_utsname(unsign

 static inline int copy_utsname(int flags, struct task_struct *tsk)
 {
+	if (flags & CLONE_NEWUTS)
+		return -EINVAL;
 	return 0;
 }
 static inline void put_uts_ns(struct uts_namespace *ns)
-- 
1.1.6
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/