MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141

pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040

stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch

mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch

Signed-off-by: Andy Green <andy@openmoko.com>

6 files changed, 173 insertions, 152 deletions

diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index 0dfebc50942..4a7a12c95ab 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -26,29 +26,6 @@ static void *get_ipc(ctl_table *table)
 	return which;
 }
 
-/*
- * Routine that is called when the file "auto_msgmni" has successfully been
- * written.
- * Two values are allowed:
- * 0: unregister msgmni's callback routine from the ipc namespace notifier
- *    chain. This means that msgmni won't be recomputed anymore upon memory
- *    add/remove or ipc namespace creation/removal.
- * 1: register back the callback routine.
- */
-static void ipc_auto_callback(int val)
-{
-	if (!val)
-		unregister_ipcns_notifier(current->nsproxy->ipc_ns);
-	else {
-		/*
-		 * Re-enable automatic recomputing only if not already
-		 * enabled.
-		 */
-		recompute_msgmni(current->nsproxy->ipc_ns);
-		cond_register_ipcns_notifier(current->nsproxy->ipc_ns);
-	}
-}
-
 #ifdef CONFIG_PROC_FS
 static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
 	void __user *buffer, size_t *lenp, loff_t *ppos)
@@ -94,6 +71,29 @@ static int proc_ipc_doulongvec_minmax(ctl_table *table, int write,
 					lenp, ppos);
 }
 
+/*
+ * Routine that is called when the file "auto_msgmni" has successfully been
+ * written.
+ * Two values are allowed:
+ * 0: unregister msgmni's callback routine from the ipc namespace notifier
+ *    chain. This means that msgmni won't be recomputed anymore upon memory
+ *    add/remove or ipc namespace creation/removal.
+ * 1: register back the callback routine.
+ */
+static void ipc_auto_callback(int val)
+{
+	if (!val)
+		unregister_ipcns_notifier(current->nsproxy->ipc_ns);
+	else {
+		/*
+		 * Re-enable automatic recomputing only if not already
+		 * enabled.
+		 */
+		recompute_msgmni(current->nsproxy->ipc_ns);
+		cond_register_ipcns_notifier(current->nsproxy->ipc_ns);
+	}
+}
+
 static int proc_ipcauto_dointvec_minmax(ctl_table *table, int write,
 	struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos)
 {
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 68eb857cfde..54b4077fed7 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -112,21 +112,20 @@ static inline struct mqueue_inode_info *MQUEUE_I(struct inode *inode)
 static struct inode *mqueue_get_inode(struct super_block *sb, int mode,
 							struct mq_attr *attr)
 {
+	struct user_struct *u = current_user();
 	struct inode *inode;
 
 	inode = new_inode(sb);
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blocks = 0;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_mtime = inode->i_ctime = inode->i_atime =
 				CURRENT_TIME;
 
 		if (S_ISREG(mode)) {
 			struct mqueue_inode_info *info;
 			struct task_struct *p = current;
-			struct user_struct *u = p->user;
 			unsigned long mq_bytes, mq_msg_tblsz;
 
 			inode->i_fop = &mqueue_file_operations;
@@ -506,8 +505,9 @@ static void __do_notify(struct mqueue_inode_info *info)
 			sig_i.si_errno = 0;
 			sig_i.si_code = SI_MESGQ;
 			sig_i.si_value = info->notify.sigev_value;
-			sig_i.si_pid = task_tgid_vnr(current);
-			sig_i.si_uid = current->uid;
+			sig_i.si_pid = task_tgid_nr_ns(current,
+						ns_of_pid(info->notify_owner));
+			sig_i.si_uid = current_uid();
 
 			kill_pid_info(info->notify.sigev_signo,
 				      &sig_i, info->notify_owner);
@@ -524,31 +524,27 @@ static void __do_notify(struct mqueue_inode_info *info)
 	wake_up(&info->wait_q);
 }
 
-static long prepare_timeout(const struct timespec __user *u_arg)
+static long prepare_timeout(struct timespec *p)
 {
-	struct timespec ts, nowts;
+	struct timespec nowts;
 	long timeout;
 
-	if (u_arg) {
-		if (unlikely(copy_from_user(&ts, u_arg,
-					sizeof(struct timespec))))
-			return -EFAULT;
-
-		if (unlikely(ts.tv_nsec < 0 || ts.tv_sec < 0
-			|| ts.tv_nsec >= NSEC_PER_SEC))
+	if (p) {
+		if (unlikely(p->tv_nsec < 0 || p->tv_sec < 0
+			|| p->tv_nsec >= NSEC_PER_SEC))
 			return -EINVAL;
 		nowts = CURRENT_TIME;
 		/* first subtract as jiffies can't be too big */
-		ts.tv_sec -= nowts.tv_sec;
-		if (ts.tv_nsec < nowts.tv_nsec) {
-			ts.tv_nsec += NSEC_PER_SEC;
-			ts.tv_sec--;
+		p->tv_sec -= nowts.tv_sec;
+		if (p->tv_nsec < nowts.tv_nsec) {
+			p->tv_nsec += NSEC_PER_SEC;
+			p->tv_sec--;
 		}
-		ts.tv_nsec -= nowts.tv_nsec;
-		if (ts.tv_sec < 0)
+		p->tv_nsec -= nowts.tv_nsec;
+		if (p->tv_sec < 0)
 			return 0;
 
-		timeout = timespec_to_jiffies(&ts) + 1;
+		timeout = timespec_to_jiffies(p) + 1;
 	} else
 		return MAX_SCHEDULE_TIMEOUT;
 
@@ -592,21 +588,18 @@ static int mq_attr_ok(struct mq_attr *attr)
  * Invoked when creating a new queue via sys_mq_open
  */
 static struct file *do_create(struct dentry *dir, struct dentry *dentry,
-			int oflag, mode_t mode, struct mq_attr __user *u_attr)
+			int oflag, mode_t mode, struct mq_attr *attr)
 {
-	struct mq_attr attr;
+	const struct cred *cred = current_cred();
 	struct file *result;
 	int ret;
 
-	if (u_attr) {
-		ret = -EFAULT;
-		if (copy_from_user(&attr, u_attr, sizeof(attr)))
-			goto out;
+	if (attr) {
 		ret = -EINVAL;
-		if (!mq_attr_ok(&attr))
+		if (!mq_attr_ok(attr))
 			goto out;
 		/* store for use during create */
-		dentry->d_fsdata = &attr;
+		dentry->d_fsdata = attr;
 	}
 
 	mode &= ~current->fs->umask;
@@ -618,7 +611,7 @@ static struct file *do_create(struct dentry *dir, struct dentry *dentry,
 	if (ret)
 		goto out_drop_write;
 
-	result = dentry_open(dentry, mqueue_mnt, oflag);
+	result = dentry_open(dentry, mqueue_mnt, oflag, cred);
 	/*
 	 * dentry_open() took a persistent mnt_want_write(),
 	 * so we can now drop this one.
@@ -637,8 +630,10 @@ out:
 /* Opens existing queue */
 static struct file *do_open(struct dentry *dentry, int oflag)
 {
-static int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
-					MAY_READ | MAY_WRITE };
+	const struct cred *cred = current_cred();
+
+	static const int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
+						  MAY_READ | MAY_WRITE };
 
 	if ((oflag & O_ACCMODE) == (O_RDWR | O_WRONLY)) {
 		dput(dentry);
@@ -652,20 +647,22 @@ static int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
 		return ERR_PTR(-EACCES);
 	}
 
-	return dentry_open(dentry, mqueue_mnt, oflag);
+	return dentry_open(dentry, mqueue_mnt, oflag, cred);
 }
 
-asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,
-				struct mq_attr __user *u_attr)
+SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, mode_t, mode,
+		struct mq_attr __user *, u_attr)
 {
 	struct dentry *dentry;
 	struct file *filp;
 	char *name;
+	struct mq_attr attr;
 	int fd, error;
 
-	error = audit_mq_open(oflag, mode, u_attr);
-	if (error != 0)
-		return error;
+	if (u_attr && copy_from_user(&attr, u_attr, sizeof(struct mq_attr)))
+		return -EFAULT;
+
+	audit_mq_open(oflag, mode, u_attr ? &attr : NULL);
 
 	if (IS_ERR(name = getname(u_name)))
 		return PTR_ERR(name);
@@ -691,7 +688,8 @@ asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,
 			filp = do_open(dentry, oflag);
 		} else {
 			filp = do_create(mqueue_mnt->mnt_root, dentry,
-						oflag, mode, u_attr);
+						oflag, mode,
+						u_attr ? &attr : NULL);
 		}
 	} else {
 		error = -ENOENT;
@@ -723,7 +721,7 @@ out_putname:
 	return fd;
 }
 
-asmlinkage long sys_mq_unlink(const char __user *u_name)
+SYSCALL_DEFINE1(mq_unlink, const char __user *, u_name)
 {
 	int err;
 	char *name;
@@ -816,9 +814,9 @@ static inline void pipelined_receive(struct mqueue_inode_info *info)
 	sender->state = STATE_READY;
 }
 
-asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr,
-	size_t msg_len, unsigned int msg_prio,
-	const struct timespec __user *u_abs_timeout)
+SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
+		size_t, msg_len, unsigned int, msg_prio,
+		const struct timespec __user *, u_abs_timeout)
 {
 	struct file *filp;
 	struct inode *inode;
@@ -826,17 +824,22 @@ asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr,
 	struct ext_wait_queue *receiver;
 	struct msg_msg *msg_ptr;
 	struct mqueue_inode_info *info;
+	struct timespec ts, *p = NULL;
 	long timeout;
 	int ret;
 
-	ret = audit_mq_timedsend(mqdes, msg_len, msg_prio, u_abs_timeout);
-	if (ret != 0)
-		return ret;
+	if (u_abs_timeout) {
+		if (copy_from_user(&ts, u_abs_timeout, 
+					sizeof(struct timespec)))
+			return -EFAULT;
+		p = &ts;
+	}
 
 	if (unlikely(msg_prio >= (unsigned long) MQ_PRIO_MAX))
 		return -EINVAL;
 
-	timeout = prepare_timeout(u_abs_timeout);
+	audit_mq_sendrecv(mqdes, msg_len, msg_prio, p);
+	timeout = prepare_timeout(p);
 
 	ret = -EBADF;
 	filp = fget(mqdes);
@@ -904,9 +907,9 @@ out:
 	return ret;
 }
 
-asmlinkage ssize_t sys_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr,
-	size_t msg_len, unsigned int __user *u_msg_prio,
-	const struct timespec __user *u_abs_timeout)
+SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
+		size_t, msg_len, unsigned int __user *, u_msg_prio,
+		const struct timespec __user *, u_abs_timeout)
 {
 	long timeout;
 	ssize_t ret;
@@ -915,12 +918,17 @@ asmlinkage ssize_t sys_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr,
 	struct inode *inode;
 	struct mqueue_inode_info *info;
 	struct ext_wait_queue wait;
+	struct timespec ts, *p = NULL;
 
-	ret = audit_mq_timedreceive(mqdes, msg_len, u_msg_prio, u_abs_timeout);
-	if (ret != 0)
-		return ret;
+	if (u_abs_timeout) {
+		if (copy_from_user(&ts, u_abs_timeout, 
+					sizeof(struct timespec)))
+			return -EFAULT;
+		p = &ts;
+	}
 
-	timeout = prepare_timeout(u_abs_timeout);
+	audit_mq_sendrecv(mqdes, msg_len, 0, p);
+	timeout = prepare_timeout(p);
 
 	ret = -EBADF;
 	filp = fget(mqdes);
@@ -989,8 +997,8 @@ out:
  * and he isn't currently owner of notification, will be silently discarded.
  * It isn't explicitly defined in the POSIX.
  */
-asmlinkage long sys_mq_notify(mqd_t mqdes,
-				const struct sigevent __user *u_notification)
+SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
+		const struct sigevent __user *, u_notification)
 {
 	int ret;
 	struct file *filp;
@@ -1000,17 +1008,17 @@ asmlinkage long sys_mq_notify(mqd_t mqdes,
 	struct mqueue_inode_info *info;
 	struct sk_buff *nc;
 
-	ret = audit_mq_notify(mqdes, u_notification);
-	if (ret != 0)
-		return ret;
-
-	nc = NULL;
-	sock = NULL;
-	if (u_notification != NULL) {
+	if (u_notification) {
 		if (copy_from_user(&notification, u_notification,
 					sizeof(struct sigevent)))
 			return -EFAULT;
+	}
 
+	audit_mq_notify(mqdes, u_notification ? &notification : NULL);
+
+	nc = NULL;
+	sock = NULL;
+	if (u_notification != NULL) {
 		if (unlikely(notification.sigev_notify != SIGEV_NONE &&
 			     notification.sigev_notify != SIGEV_SIGNAL &&
 			     notification.sigev_notify != SIGEV_THREAD))
@@ -1115,9 +1123,9 @@ out:
 	return ret;
 }
 
-asmlinkage long sys_mq_getsetattr(mqd_t mqdes,
-			const struct mq_attr __user *u_mqstat,
-			struct mq_attr __user *u_omqstat)
+SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
+		const struct mq_attr __user *, u_mqstat,
+		struct mq_attr __user *, u_omqstat)
 {
 	int ret;
 	struct mq_attr mqstat, omqstat;
@@ -1147,11 +1155,7 @@ asmlinkage long sys_mq_getsetattr(mqd_t mqdes,
 	omqstat = info->attr;
 	omqstat.mq_flags = filp->f_flags & O_NONBLOCK;
 	if (u_mqstat) {
-		ret = audit_mq_getsetattr(mqdes, &mqstat);
-		if (ret != 0) {
-			spin_unlock(&info->lock);
-			goto out_fput;
-		}
+		audit_mq_getsetattr(mqdes, &mqstat);
 		if (mqstat.mq_flags & O_NONBLOCK)
 			filp->f_flags |= O_NONBLOCK;
 		else
diff --git a/ipc/msg.c b/ipc/msg.c
index b4eee1c6101..2ceab7f12fc 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -309,7 +309,7 @@ static inline int msg_security(struct kern_ipc_perm *ipcp, int msgflg)
 	return security_msg_queue_associate(msq, msgflg);
 }
 
-asmlinkage long sys_msgget(key_t key, int msgflg)
+SYSCALL_DEFINE2(msgget, key_t, key, int, msgflg)
 {
 	struct ipc_namespace *ns;
 	struct ipc_ops msg_ops;
@@ -466,7 +466,7 @@ out_up:
 	return err;
 }
 
-asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf)
+SYSCALL_DEFINE3(msgctl, int, msqid, int, cmd, struct msqid_ds __user *, buf)
 {
 	struct msg_queue *msq;
 	int err, version;
@@ -723,8 +723,8 @@ out_free:
 	return err;
 }
 
-asmlinkage long
-sys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, int msgflg)
+SYSCALL_DEFINE4(msgsnd, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz,
+		int, msgflg)
 {
 	long mtype;
 
@@ -904,8 +904,8 @@ out_unlock:
 	return msgsz;
 }
 
-asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz,
-			   long msgtyp, int msgflg)
+SYSCALL_DEFINE5(msgrcv, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz,
+		long, msgtyp, int, msgflg)
 {
 	long err, mtype;
 
diff --git a/ipc/sem.c b/ipc/sem.c
index 082122469b1..16a2189e96f 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -58,7 +58,7 @@
  * SMP-threaded, sysctl's added
  * (c) 1999 Manfred Spraul <manfred@colorfullife.com>
  * Enforced range limit on SEM_UNDO
- * (c) 2001 Red Hat Inc <alan@redhat.com>
+ * (c) 2001 Red Hat Inc
  * Lockless wakeup
  * (c) 2003 Manfred Spraul <manfred@colorfullife.com>
  *
@@ -308,7 +308,7 @@ static inline int sem_more_checks(struct kern_ipc_perm *ipcp,
 	return 0;
 }
 
-asmlinkage long sys_semget(key_t key, int nsems, int semflg)
+SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg)
 {
 	struct ipc_namespace *ns;
 	struct ipc_ops sem_ops;
@@ -887,7 +887,7 @@ out_up:
 	return err;
 }
 
-asmlinkage long sys_semctl (int semid, int semnum, int cmd, union semun arg)
+SYSCALL_DEFINE(semctl)(int semid, int semnum, int cmd, union semun arg)
 {
 	int err = -EINVAL;
 	int version;
@@ -923,6 +923,13 @@ asmlinkage long sys_semctl (int semid, int semnum, int cmd, union semun arg)
 		return -EINVAL;
 	}
 }
+#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
+asmlinkage long SyS_semctl(int semid, int semnum, int cmd, union semun arg)
+{
+	return SYSC_semctl((int) semid, (int) semnum, (int) cmd, arg);
+}
+SYSCALL_ALIAS(sys_semctl, SyS_semctl);
+#endif
 
 /* If the task doesn't already have a undo_list, then allocate one
  * here.  We guarantee there is only one thread using this undo list,
@@ -1048,8 +1055,8 @@ out:
 	return un;
 }
 
-asmlinkage long sys_semtimedop(int semid, struct sembuf __user *tsops,
-			unsigned nsops, const struct timespec __user *timeout)
+SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops,
+		unsigned, nsops, const struct timespec __user *, timeout)
 {
 	int error = -EINVAL;
 	struct sem_array *sma;
@@ -1216,7 +1223,6 @@ asmlinkage long sys_semtimedop(int semid, struct sembuf __user *tsops,
 	if (timeout && jiffies_left == 0)
 		error = -EAGAIN;
 	list_del(&queue.list);
-	goto out_unlock_free;
 
 out_unlock_free:
 	sem_unlock(sma);
@@ -1226,7 +1232,8 @@ out_free:
 	return error;
 }
 
-asmlinkage long sys_semop (int semid, struct sembuf __user *tsops, unsigned nsops)
+SYSCALL_DEFINE3(semop, int, semid, struct sembuf __user *, tsops,
+		unsigned, nsops)
 {
 	return sys_semtimedop(semid, tsops, nsops, NULL);
 }
diff --git a/ipc/shm.c b/ipc/shm.c
index 867e5d6a55c..a9e09ad2263 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -75,7 +75,7 @@ void shm_init_ns(struct ipc_namespace *ns)
 	ns->shm_ctlall = SHMALL;
 	ns->shm_ctlmni = SHMMNI;
 	ns->shm_tot = 0;
-	ipc_init_ids(&ns->ids[IPC_SHM_IDS]);
+	ipc_init_ids(&shm_ids(ns));
 }
 
 /*
@@ -366,7 +366,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
 	if (shmflg & SHM_HUGETLB) {
 		/* hugetlb_file_setup takes care of mlock user accounting */
 		file = hugetlb_file_setup(name, size);
-		shp->mlock_user = current->user;
+		shp->mlock_user = current_user();
 	} else {
 		int acctflag = VM_ACCOUNT;
 		/*
@@ -440,7 +440,7 @@ static inline int shm_more_checks(struct kern_ipc_perm *ipcp,
 	return 0;
 }
 
-asmlinkage long sys_shmget (key_t key, size_t size, int shmflg)
+SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg)
 {
 	struct ipc_namespace *ns;
 	struct ipc_ops shm_ops;
@@ -621,7 +621,7 @@ out_up:
 	return err;
 }
 
-asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
+SYSCALL_DEFINE3(shmctl, int, shmid, int, cmd, struct shmid_ds __user *, buf)
 {
 	struct shmid_kernel *shp;
 	int err, version;
@@ -644,7 +644,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
 		if (err)
 			return err;
 
-		memset(&shminfo,0,sizeof(shminfo));
+		memset(&shminfo, 0, sizeof(shminfo));
 		shminfo.shmmni = shminfo.shmseg = ns->shm_ctlmni;
 		shminfo.shmmax = ns->shm_ctlmax;
 		shminfo.shmall = ns->shm_ctlall;
@@ -669,7 +669,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
 		if (err)
 			return err;
 
-		memset(&shm_info,0,sizeof(shm_info));
+		memset(&shm_info, 0, sizeof(shm_info));
 		down_read(&shm_ids(ns).rw_mutex);
 		shm_info.used_ids = shm_ids(ns).in_use;
 		shm_get_stat (ns, &shm_info.shm_rss, &shm_info.shm_swp);
@@ -678,7 +678,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
 		shm_info.swap_successes = 0;
 		err = ipc_get_maxid(&shm_ids(ns));
 		up_read(&shm_ids(ns).rw_mutex);
-		if(copy_to_user (buf, &shm_info, sizeof(shm_info))) {
+		if (copy_to_user(buf, &shm_info, sizeof(shm_info))) {
 			err = -EFAULT;
 			goto out;
 		}
@@ -692,11 +692,6 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
 		struct shmid64_ds tbuf;
 		int result;
 
-		if (!buf) {
-			err = -EFAULT;
-			goto out;
-		}
-
 		if (cmd == SHM_STAT) {
 			shp = shm_lock(ns, shmid);
 			if (IS_ERR(shp)) {
@@ -712,7 +707,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
 			}
 			result = 0;
 		}
-		err=-EACCES;
+		err = -EACCES;
 		if (ipcperms (&shp->shm_perm, S_IRUGO))
 			goto out_unlock;
 		err = security_shm_shmctl(shp, cmd);
@@ -747,14 +742,13 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
 			goto out;
 		}
 
-		err = audit_ipc_obj(&(shp->shm_perm));
-		if (err)
-			goto out_unlock;
+		audit_ipc_obj(&(shp->shm_perm));
 
 		if (!capable(CAP_IPC_LOCK)) {
+			uid_t euid = current_euid();
 			err = -EPERM;
-			if (current->euid != shp->shm_perm.uid &&
-			    current->euid != shp->shm_perm.cuid)
+			if (euid != shp->shm_perm.uid &&
+			    euid != shp->shm_perm.cuid)
 				goto out_unlock;
 			if (cmd == SHM_LOCK &&
 			    !current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur)
@@ -766,7 +760,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf)
 			goto out_unlock;
 		
 		if(cmd==SHM_LOCK) {
-			struct user_struct * user = current->user;
+			struct user_struct *user = current_user();
 			if (!is_file_hugepages(shp->shm_file)) {
 				err = shmem_lock(shp->shm_file, 1, user);
 				if (!err && !(shp->shm_perm.mode & SHM_LOCKED)){
@@ -945,7 +939,7 @@ out_put_dentry:
 	goto out_nattch;
 }
 
-asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg)
+SYSCALL_DEFINE3(shmat, int, shmid, char __user *, shmaddr, int, shmflg)
 {
 	unsigned long ret;
 	long err;
@@ -961,7 +955,7 @@ asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg)
  * detach and kill segment if marked destroyed.
  * The work is done in shm_close.
  */
-asmlinkage long sys_shmdt(char __user *shmaddr)
+SYSCALL_DEFINE1(shmdt, char __user *, shmaddr)
 {
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma, *next;
@@ -996,6 +990,7 @@ asmlinkage long sys_shmdt(char __user *shmaddr)
 	 */
 	vma = find_vma(mm, addr);
 
+#ifdef CONFIG_MMU
 	while (vma) {
 		next = vma->vm_next;
 
@@ -1040,6 +1035,17 @@ asmlinkage long sys_shmdt(char __user *shmaddr)
 		vma = next;
 	}
 
+#else /* CONFIG_MMU */
+	/* under NOMMU conditions, the exact address to be destroyed must be
+	 * given */
+	retval = -EINVAL;
+	if (vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) {
+		do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start);
+		retval = 0;
+	}
+
+#endif
+
 	up_write(&mm->mmap_sem);
 	return retval;
 }
diff --git a/ipc/util.c b/ipc/util.c
index 49b3ea615dc..7585a72e259 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -258,6 +258,8 @@ int ipc_get_maxid(struct ipc_ids *ids)
  
 int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)
 {
+	uid_t euid;
+	gid_t egid;
 	int id, err;
 
 	if (size > IPCMNI)
@@ -266,24 +268,29 @@ int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)
 	if (ids->in_use >= size)
 		return -ENOSPC;
 
+	spin_lock_init(&new->lock);
+	new->deleted = 0;
+	rcu_read_lock();
+	spin_lock(&new->lock);
+
 	err = idr_get_new(&ids->ipcs_idr, new, &id);
-	if (err)
+	if (err) {
+		spin_unlock(&new->lock);
+		rcu_read_unlock();
 		return err;
+	}
 
 	ids->in_use++;
 
-	new->cuid = new->uid = current->euid;
-	new->gid = new->cgid = current->egid;
+	current_euid_egid(&euid, &egid);
+	new->cuid = new->uid = euid;
+	new->gid = new->cgid = egid;
 
 	new->seq = ids->seq++;
 	if(ids->seq > ids->seq_max)
 		ids->seq = 0;
 
 	new->id = ipc_buildid(id, new->seq);
-	spin_lock_init(&new->lock);
-	new->deleted = 0;
-	rcu_read_lock();
-	spin_lock(&new->lock);
 	return id;
 }
 
@@ -616,13 +623,14 @@ void ipc_rcu_putref(void *ptr)
  
 int ipcperms (struct kern_ipc_perm *ipcp, short flag)
 {	/* flag will most probably be 0 or S_...UGO from <linux/stat.h> */
-	int requested_mode, granted_mode, err;
+	uid_t euid = current_euid();
+	int requested_mode, granted_mode;
 
-	if (unlikely((err = audit_ipc_obj(ipcp))))
-		return err;
+	audit_ipc_obj(ipcp);
 	requested_mode = (flag >> 6) | (flag >> 3) | flag;
 	granted_mode = ipcp->mode;
-	if (current->euid == ipcp->cuid || current->euid == ipcp->uid)
+	if (euid == ipcp->cuid ||
+	    euid == ipcp->uid)
 		granted_mode >>= 6;
 	else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid))
 		granted_mode >>= 3;
@@ -784,6 +792,7 @@ struct kern_ipc_perm *ipcctl_pre_down(struct ipc_ids *ids, int id, int cmd,
 				      struct ipc64_perm *perm, int extra_perm)
 {
 	struct kern_ipc_perm *ipcp;
+	uid_t euid;
 	int err;
 
 	down_write(&ids->rw_mutex);
@@ -793,22 +802,17 @@ struct kern_ipc_perm *ipcctl_pre_down(struct ipc_ids *ids, int id, int cmd,
 		goto out_up;
 	}
 
-	err = audit_ipc_obj(ipcp);
-	if (err)
-		goto out_unlock;
-
-	if (cmd == IPC_SET) {
-		err = audit_ipc_set_perm(extra_perm, perm->uid,
+	audit_ipc_obj(ipcp);
+	if (cmd == IPC_SET)
+		audit_ipc_set_perm(extra_perm, perm->uid,
 					 perm->gid, perm->mode);
-		if (err)
-			goto out_unlock;
-	}
-	if (current->euid == ipcp->cuid ||
-	    current->euid == ipcp->uid || capable(CAP_SYS_ADMIN))
+
+	euid = current_euid();
+	if (euid == ipcp->cuid ||
+	    euid == ipcp->uid  || capable(CAP_SYS_ADMIN))
 		return ipcp;
 
 	err = -EPERM;
-out_unlock:
 	ipc_unlock(ipcp);
 out_up:
 	up_write(&ids->rw_mutex);