From: "Eric W. Biederman" <ebiederm@xmission.com>
To: <linux-security-module@vger.kernel.org>
Cc: linux-kernel@vger.kernel.org, "Serge Hallyn" <serge@hallyn.com>,
"Linux Containers" <containers@lists.linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Arve Hjønnevåg" <arve@android.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>
Subject: [PATCH 09/14] userns: Convert binder ipc to use kuids
Date: Thu, 20 Sep 2012 17:28:45 -0700 [thread overview]
Message-ID: <1348187330-6616-9-git-send-email-ebiederm@xmission.com> (raw)
In-Reply-To: <1348187330-6616-1-git-send-email-ebiederm@xmission.com>
From: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
drivers/staging/android/binder.c | 14 +++++++-------
init/Kconfig | 3 ---
2 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 574e992..8e35d4b 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -47,7 +47,7 @@ static HLIST_HEAD(binder_dead_nodes);
static struct dentry *binder_debugfs_dir_entry_root;
static struct dentry *binder_debugfs_dir_entry_proc;
static struct binder_node *binder_context_mgr_node;
-static uid_t binder_context_mgr_uid = -1;
+static kuid_t binder_context_mgr_uid = INVALID_UID;
static int binder_last_id;
static struct workqueue_struct *binder_deferred_workqueue;
@@ -356,7 +356,7 @@ struct binder_transaction {
unsigned int flags;
long priority;
long saved_priority;
- uid_t sender_euid;
+ kuid_t sender_euid;
};
static void
@@ -2427,7 +2427,7 @@ retry:
}
tr.code = t->code;
tr.flags = t->flags;
- tr.sender_euid = t->sender_euid;
+ tr.sender_euid = from_kuid(current_user_ns(), t->sender_euid);
if (t->from) {
struct task_struct *sender = t->from->proc->tsk;
@@ -2705,12 +2705,12 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
ret = -EBUSY;
goto err;
}
- if (binder_context_mgr_uid != -1) {
- if (binder_context_mgr_uid != current->cred->euid) {
+ if (uid_valid(binder_context_mgr_uid)) {
+ if (!uid_eq(binder_context_mgr_uid, current->cred->euid)) {
pr_err("binder: BINDER_SET_"
"CONTEXT_MGR bad uid %d != %d\n",
- current->cred->euid,
- binder_context_mgr_uid);
+ from_kuid(&init_user_ns, current->cred->euid),
+ from_kuid(&init_user_ns, binder_context_mgr_uid));
ret = -EPERM;
goto err;
}
diff --git a/init/Kconfig b/init/Kconfig
index 570cd33..8691098 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -952,9 +952,6 @@ config UIDGID_CONVERTED
depends on UFS_FS = n
depends on XFS_FS = n
- # The rare drivers that won't build
- depends on ANDROID_BINDER_IPC = n
-
config UIDGID_STRICT_TYPE_CHECKS
bool "Require conversions between uid/gids and their internal representation"
depends on UIDGID_CONVERTED
--
1.7.5.4
next prev parent reply other threads:[~2012-09-21 0:30 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 0:26 [REVIEW][PATCH 00/14] userns: Miscelanous conversions Eric W. Biederman
2012-09-21 0:28 ` [PATCH 01/14] userns: Convert loop to use kuid_t instead of uid_t Eric W. Biederman
2012-09-21 0:28 ` [PATCH 02/14] userns: Convert apparmor to use kuid and kgid where appropriate Eric W. Biederman
2012-09-21 0:28 ` [PATCH 03/14] userns: Convert tomoyo " Eric W. Biederman
2012-09-21 0:28 ` [PATCH 04/14] userns: Convert selinux " Eric W. Biederman
2012-09-26 17:51 ` Serge Hallyn
2012-09-21 0:28 ` [PATCH 05/14] userns: Convert hostfs " Eric W. Biederman
2012-09-23 21:59 ` Richard Weinberger
2012-09-24 2:39 ` Eric W. Biederman
2012-09-24 14:55 ` Serge Hallyn
2012-09-21 0:28 ` [PATCH 06/14] userns: Convert EVM to deal with kuids and kgids in it's hmac computation Eric W. Biederman
2012-09-21 0:28 ` [PATCH 07/14] userns: Add user namespace support to IMA Eric W. Biederman
2012-09-21 0:28 ` [PATCH 08/14] userns: Teach security_path_chown to take kuids and kgids Eric W. Biederman
2012-09-21 0:28 ` Eric W. Biederman [this message]
2012-09-21 6:44 ` [PATCH 09/14] userns: Convert binder ipc to use kuids Greg Kroah-Hartman
2012-09-21 0:28 ` [PATCH 10/14] userns: Convert s390 hypfs to use kuid and kgid where appropriate Eric W. Biederman
2012-09-26 17:52 ` Serge Hallyn
2012-09-21 0:28 ` [PATCH 11/14] userns: Convert s390 getting uid and gid system calls to use kuid and kgid Eric W. Biederman
2012-09-26 17:59 ` Serge Hallyn
2012-09-21 0:28 ` [PATCH 12/14] userns: On ppc convert current_uid from a kuid before printing Eric W. Biederman
2012-09-26 17:56 ` Serge Hallyn
2012-09-21 0:28 ` [PATCH 13/14] userns: On ia64 deal with current_uid and current_gid being kuid and kgid Eric W. Biederman
2012-09-26 17:55 ` Serge Hallyn
2012-09-21 0:28 ` [PATCH 14/14] userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids Eric W. Biederman
2012-09-21 6:07 ` [PATCH 01/14] userns: Convert loop to use kuid_t instead of uid_t Jens Axboe
2012-09-21 7:07 ` Eric W. Biederman
2012-09-21 7:11 ` Jens Axboe
2012-09-21 7:19 ` Eric W. Biederman
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