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[PATCH] rename struct namespace to struct mnt_namespace

Browse source 
Rename 'struct namespace' to 'struct mnt_namespace' to avoid confusion with
other namespaces being developped for the containers : pid, uts, ipc, etc.
'namespace' variables and attributes are also renamed to 'mnt_ns'

Signed-off-by: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Kirill Korotaev 2006-12-08 02:37:56 -08:00 committed by Linus Torvalds
parent 1ec320afdc
commit 6b3286ed11
16 changed files with 146 additions and 144 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
fs/afs/mntpt.c
View file

@ -18,7 +18,7 @@
#include <linux/pagemap.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include "super.h"
#include "cell.h"
#include "volume.h"

109
fs/namespace.c
View file

@ -20,7 +20,7 @@
#include <linux/module.h>
#include <linux/sysfs.h>
#include <linux/seq_file.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/namei.h>
#include <linux/security.h>
#include <linux/mount.h>
@ -133,10 +133,10 @@ struct vfsmount *lookup_mnt(struct vfsmount *mnt, struct dentry *dentry)
static inline int check_mnt(struct vfsmount *mnt)
{
return mnt->mnt_namespace == current->nsproxy->namespace;
return mnt->mnt_ns == current->nsproxy->mnt_ns;
}
static void touch_namespace(struct namespace *ns)
static void touch_mnt_namespace(struct mnt_namespace *ns)
{
if (ns) {
ns->event = ++event;
@ -144,7 +144,7 @@ static void touch_namespace(struct namespace *ns)
}
}
static void __touch_namespace(struct namespace *ns)
static void __touch_mnt_namespace(struct mnt_namespace *ns)
{
if (ns && ns->event != event) {
ns->event = event;
@ -187,19 +187,19 @@ static void commit_tree(struct vfsmount *mnt)
struct vfsmount *parent = mnt->mnt_parent;
struct vfsmount *m;
LIST_HEAD(head);
struct namespace *n = parent->mnt_namespace;
struct mnt_namespace *n = parent->mnt_ns;
BUG_ON(parent == mnt);
list_add_tail(&head, &mnt->mnt_list);
list_for_each_entry(m, &head, mnt_list)
m->mnt_namespace = n;
m->mnt_ns = n;
list_splice(&head, n->list.prev);
list_add_tail(&mnt->mnt_hash, mount_hashtable +
hash(parent, mnt->mnt_mountpoint));
list_add_tail(&mnt->mnt_child, &parent->mnt_mounts);
touch_namespace(n);
touch_mnt_namespace(n);
}
static struct vfsmount *next_mnt(struct vfsmount *p, struct vfsmount *root)
@ -320,7 +320,7 @@ EXPORT_SYMBOL(mnt_unpin);
/* iterator */
static void *m_start(struct seq_file *m, loff_t *pos)
{
struct namespace *n = m->private;
struct mnt_namespace *n = m->private;
struct list_head *p;
loff_t l = *pos;
@ -333,7 +333,7 @@ static void *m_start(struct seq_file *m, loff_t *pos)
static void *m_next(struct seq_file *m, void *v, loff_t *pos)
{
struct namespace *n = m->private;
struct mnt_namespace *n = m->private;
struct list_head *p = ((struct vfsmount *)v)->mnt_list.next;
(*pos)++;
return p == &n->list ? NULL : list_entry(p, struct vfsmount, mnt_list);
@ -526,8 +526,8 @@ void umount_tree(struct vfsmount *mnt, int propagate, struct list_head *kill)
list_for_each_entry(p, kill, mnt_hash) {
list_del_init(&p->mnt_expire);
list_del_init(&p->mnt_list);
__touch_namespace(p->mnt_namespace);
p->mnt_namespace = NULL;
__touch_mnt_namespace(p->mnt_ns);
p->mnt_ns = NULL;
list_del_init(&p->mnt_child);
if (p->mnt_parent != p)
p->mnt_mountpoint->d_mounted--;
@ -830,7 +830,7 @@ static int attach_recursive_mnt(struct vfsmount *source_mnt,
if (parent_nd) {
detach_mnt(source_mnt, parent_nd);
attach_mnt(source_mnt, nd);
touch_namespace(current->nsproxy->namespace);
touch_mnt_namespace(current->nsproxy->mnt_ns);
} else {
mnt_set_mountpoint(dest_mnt, dest_dentry, source_mnt);
commit_tree(source_mnt);
@ -1145,9 +1145,9 @@ static void expire_mount(struct vfsmount *mnt, struct list_head *mounts,
*/
if (!propagate_mount_busy(mnt, 2)) {
/* delete from the namespace */
touch_namespace(mnt->mnt_namespace);
touch_mnt_namespace(mnt->mnt_ns);
list_del_init(&mnt->mnt_list);
mnt->mnt_namespace = NULL;
mnt->mnt_ns = NULL;
umount_tree(mnt, 1, umounts);
spin_unlock(&vfsmount_lock);
} else {
@ -1168,7 +1168,7 @@ static void expire_mount(struct vfsmount *mnt, struct list_head *mounts,
*/
static void expire_mount_list(struct list_head *graveyard, struct list_head *mounts)
{
struct namespace *namespace;
struct mnt_namespace *ns;
struct vfsmount *mnt;
while (!list_empty(graveyard)) {
@ -1178,10 +1178,10 @@ static void expire_mount_list(struct list_head *graveyard, struct list_head *mou
/* don't do anything if the namespace is dead - all the
* vfsmounts from it are going away anyway */
namespace = mnt->mnt_namespace;
if (!namespace || !namespace->root)
ns = mnt->mnt_ns;
if (!ns || !ns->root)
continue;
get_namespace(namespace);
get_mnt_ns(ns);
spin_unlock(&vfsmount_lock);
down_write(&namespace_sem);
@ -1189,7 +1189,7 @@ static void expire_mount_list(struct list_head *graveyard, struct list_head *mou
up_write(&namespace_sem);
release_mounts(&umounts);
mntput(mnt);
put_namespace(namespace);
put_mnt_ns(ns);
spin_lock(&vfsmount_lock);
}
}
@ -1439,14 +1439,15 @@ dput_out:
* Allocate a new namespace structure and populate it with contents
* copied from the namespace of the passed in task structure.
*/
struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
struct mnt_namespace *dup_mnt_ns(struct task_struct *tsk,
struct fs_struct *fs)
{
struct namespace *namespace = tsk->nsproxy->namespace;
struct namespace *new_ns;
struct mnt_namespace *mnt_ns = tsk->nsproxy->mnt_ns;
struct mnt_namespace *new_ns;
struct vfsmount *rootmnt = NULL, *pwdmnt = NULL, *altrootmnt = NULL;
struct vfsmount *p, *q;
new_ns = kmalloc(sizeof(struct namespace), GFP_KERNEL);
new_ns = kmalloc(sizeof(struct mnt_namespace), GFP_KERNEL);
if (!new_ns)
return NULL;
@ -1457,7 +1458,7 @@ struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
down_write(&namespace_sem);
/* First pass: copy the tree topology */
new_ns->root = copy_tree(namespace->root, namespace->root->mnt_root,
new_ns->root = copy_tree(mnt_ns->root, mnt_ns->root->mnt_root,
CL_COPY_ALL | CL_EXPIRE);
if (!new_ns->root) {
up_write(&namespace_sem);
@ -1473,10 +1474,10 @@ struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
* as belonging to new namespace. We have already acquired a private
* fs_struct, so tsk->fs->lock is not needed.
*/
p = namespace->root;
p = mnt_ns->root;
q = new_ns->root;
while (p) {
q->mnt_namespace = new_ns;
q->mnt_ns = new_ns;
if (fs) {
if (p == fs->rootmnt) {
rootmnt = p;
@ -1491,7 +1492,7 @@ struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
fs->altrootmnt = mntget(q);
}
}
p = next_mnt(p, namespace->root);
p = next_mnt(p, mnt_ns->root);
q = next_mnt(q, new_ns->root);
}
up_write(&namespace_sem);
@ -1506,16 +1507,16 @@ struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
return new_ns;
}
int copy_namespace(int flags, struct task_struct *tsk)
int copy_mnt_ns(int flags, struct task_struct *tsk)
{
struct namespace *namespace = tsk->nsproxy->namespace;
struct namespace *new_ns;
struct mnt_namespace *ns = tsk->nsproxy->mnt_ns;
struct mnt_namespace *new_ns;
int err = 0;
if (!namespace)
if (!ns)
return 0;
get_namespace(namespace);
get_mnt_ns(ns);
if (!(flags & CLONE_NEWNS))
return 0;
@ -1525,16 +1526,16 @@ int copy_namespace(int flags, struct task_struct *tsk)
goto out;
}
new_ns = dup_namespace(tsk, tsk->fs);
new_ns = dup_mnt_ns(tsk, tsk->fs);
if (!new_ns) {
err = -ENOMEM;
goto out;
}
tsk->nsproxy->namespace = new_ns;
tsk->nsproxy->mnt_ns = new_ns;
out:
put_namespace(namespace);
put_mnt_ns(ns);
return err;
}
@ -1754,7 +1755,7 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
detach_mnt(user_nd.mnt, &root_parent);
attach_mnt(user_nd.mnt, &old_nd); /* mount old root on put_old */
attach_mnt(new_nd.mnt, &root_parent); /* mount new_root on / */
touch_namespace(current->nsproxy->namespace);
touch_mnt_namespace(current->nsproxy->mnt_ns);
spin_unlock(&vfsmount_lock);
chroot_fs_refs(&user_nd, &new_nd);
security_sb_post_pivotroot(&user_nd, &new_nd);
@ -1779,27 +1780,27 @@ out3:
static void __init init_mount_tree(void)
{
struct vfsmount *mnt;
struct namespace *namespace;
struct mnt_namespace *ns;
mnt = do_kern_mount("rootfs", 0, "rootfs", NULL);
if (IS_ERR(mnt))
panic("Can't create rootfs");
namespace = kmalloc(sizeof(*namespace), GFP_KERNEL);
if (!namespace)
ns = kmalloc(sizeof(*ns), GFP_KERNEL);
if (!ns)
panic("Can't allocate initial namespace");
atomic_set(&namespace->count, 1);
INIT_LIST_HEAD(&namespace->list);
init_waitqueue_head(&namespace->poll);
namespace->event = 0;
list_add(&mnt->mnt_list, &namespace->list);
namespace->root = mnt;
mnt->mnt_namespace = namespace;
atomic_set(&ns->count, 1);
INIT_LIST_HEAD(&ns->list);
init_waitqueue_head(&ns->poll);
ns->event = 0;
list_add(&mnt->mnt_list, &ns->list);
ns->root = mnt;
mnt->mnt_ns = ns;
init_task.nsproxy->namespace = namespace;
get_namespace(namespace);
init_task.nsproxy->mnt_ns = ns;
get_mnt_ns(ns);
set_fs_pwd(current->fs, namespace->root, namespace->root->mnt_root);
set_fs_root(current->fs, namespace->root, namespace->root->mnt_root);
set_fs_pwd(current->fs, ns->root, ns->root->mnt_root);
set_fs_root(current->fs, ns->root, ns->root->mnt_root);
}
void __init mnt_init(unsigned long mempages)
@ -1860,11 +1861,11 @@ void __init mnt_init(unsigned long mempages)
init_mount_tree();
}
void __put_namespace(struct namespace *namespace)
void __put_mnt_ns(struct mnt_namespace *ns)
{
struct vfsmount *root = namespace->root;
struct vfsmount *root = ns->root;
LIST_HEAD(umount_list);
namespace->root = NULL;
ns->root = NULL;
spin_unlock(&vfsmount_lock);
down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
@ -1872,5 +1873,5 @@ void __put_namespace(struct namespace *namespace)
spin_unlock(&vfsmount_lock);
up_write(&namespace_sem);
release_mounts(&umount_list);
kfree(namespace);
kfree(ns);
}

2
fs/nfs/getroot.c
View file

@ -31,7 +31,7 @@
#include <linux/nfs_idmap.h>
#include <linux/vfs.h>
#include <linux/namei.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/security.h>
#include <asm/system.h>

2
fs/pnode.c
View file

@ -6,7 +6,7 @@
* Author : Ram Pai (linuxram@us.ibm.com)
*
*/
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/mount.h>
#include <linux/fs.h>
#include "pnode.h"

2
fs/pnode.h
View file

@ -13,7 +13,7 @@
#define IS_MNT_SHARED(mnt) (mnt->mnt_flags & MNT_SHARED)
#define IS_MNT_SLAVE(mnt) (mnt->mnt_master)
#define IS_MNT_NEW(mnt) (!mnt->mnt_namespace)
#define IS_MNT_NEW(mnt) (!mnt->mnt_ns)
#define CLEAR_MNT_SHARED(mnt) (mnt->mnt_flags &= ~MNT_SHARED)
#define IS_MNT_UNBINDABLE(mnt) (mnt->mnt_flags & MNT_UNBINDABLE)

36
fs/proc/base.c
View file

@ -59,7 +59,7 @@
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/namei.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/mm.h>
#include <linux/smp_lock.h>
#include <linux/rcupdate.h>
@ -365,33 +365,33 @@ struct proc_mounts {
static int mounts_open(struct inode *inode, struct file *file)
{
struct task_struct *task = get_proc_task(inode);
struct namespace *namespace = NULL;
struct mnt_namespace *ns = NULL;
struct proc_mounts *p;
int ret = -EINVAL;
if (task) {
task_lock(task);
namespace = task->nsproxy->namespace;
if (namespace)
get_namespace(namespace);
ns = task->nsproxy->mnt_ns;
if (ns)
get_mnt_ns(ns);
task_unlock(task);
put_task_struct(task);
}
if (namespace) {
if (ns) {
ret = -ENOMEM;
p = kmalloc(sizeof(struct proc_mounts), GFP_KERNEL);
if (p) {
file->private_data = &p->m;
ret = seq_open(file, &mounts_op);
if (!ret) {
p->m.private = namespace;
p->event = namespace->event;
p->m.private = ns;
p->event = ns->event;
return 0;
}
kfree(p);
}
put_namespace(namespace);
put_mnt_ns(ns);
}
return ret;
}
@ -399,15 +399,15 @@ static int mounts_open(struct inode *inode, struct file *file)
static int mounts_release(struct inode *inode, struct file *file)
{
struct seq_file *m = file->private_data;
struct namespace *namespace = m->private;
put_namespace(namespace);
struct mnt_namespace *ns = m->private;
put_mnt_ns(ns);
return seq_release(inode, file);
}
static unsigned mounts_poll(struct file *file, poll_table *wait)
{
struct proc_mounts *p = file->private_data;
struct namespace *ns = p->m.private;
struct mnt_namespace *ns = p->m.private;
unsigned res = 0;
poll_wait(file, &ns->poll, wait);
@ -437,21 +437,21 @@ static int mountstats_open(struct inode *inode, struct file *file)
if (!ret) {
struct seq_file *m = file->private_data;
struct namespace *namespace = NULL;
struct mnt_namespace *mnt_ns = NULL;
struct task_struct *task = get_proc_task(inode);
if (task) {
task_lock(task);
if (task->nsproxy)
namespace = task->nsproxy->namespace;
if (namespace)
get_namespace(namespace);
mnt_ns = task->nsproxy->mnt_ns;
if (mnt_ns)
get_mnt_ns(mnt_ns);
task_unlock(task);
put_task_struct(task);
}
if (namespace)
m->private = namespace;
if (mnt_ns)
m->private = mnt_ns;
else {
seq_release(inode, file);
ret = -EINVAL;

2
fs/reiserfs/super.c
View file

@ -23,7 +23,7 @@
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/quotaops.h>

2
include/linux/init_task.h
View file

@ -76,7 +76,7 @@ extern struct nsproxy init_nsproxy;
.count = ATOMIC_INIT(1), \
.nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \
.uts_ns = &init_uts_ns, \
.namespace = NULL, \
.mnt_ns = NULL, \
INIT_IPC_NS(ipc_ns) \
}

42
include/linux/mnt_namespace.h Normal file
View file

@ -0,0 +1,42 @@
#ifndef _NAMESPACE_H_
#define _NAMESPACE_H_
#ifdef __KERNEL__
#include <linux/mount.h>
#include <linux/sched.h>
#include <linux/nsproxy.h>
struct mnt_namespace {
atomic_t count;
struct vfsmount * root;
struct list_head list;
wait_queue_head_t poll;
int event;
};
extern int copy_mnt_ns(int, struct task_struct *);
extern void __put_mnt_ns(struct mnt_namespace *ns);
extern struct mnt_namespace *dup_mnt_ns(struct task_struct *,
struct fs_struct *);
static inline void put_mnt_ns(struct mnt_namespace *ns)
{
if (atomic_dec_and_lock(&ns->count, &vfsmount_lock))
/* releases vfsmount_lock */
__put_mnt_ns(ns);
}
static inline void exit_mnt_ns(struct task_struct *p)
{
struct mnt_namespace *ns = p->nsproxy->mnt_ns;
if (ns)
put_mnt_ns(ns);
}
static inline void get_mnt_ns(struct mnt_namespace *ns)
{
atomic_inc(&ns->count);
}
#endif
#endif

4
include/linux/mount.h
View file

@ -20,7 +20,7 @@
struct super_block;
struct vfsmount;
struct dentry;
struct namespace;
struct mnt_namespace;
#define MNT_NOSUID 0x01
#define MNT_NODEV 0x02
@ -52,7 +52,7 @@ struct vfsmount {
struct list_head mnt_slave_list;/* list of slave mounts */
struct list_head mnt_slave; /* slave list entry */
struct vfsmount *mnt_master; /* slave is on master->mnt_slave_list */
struct namespace *mnt_namespace; /* containing namespace */
struct mnt_namespace *mnt_ns; /* containing namespace */
int mnt_pinned;
};

42
include/linux/namespace.h
View file

@ -1,42 +0,0 @@
#ifndef _NAMESPACE_H_
#define _NAMESPACE_H_
#ifdef __KERNEL__
#include <linux/mount.h>
#include <linux/sched.h>
#include <linux/nsproxy.h>
struct namespace {
atomic_t count;
struct vfsmount * root;
struct list_head list;
wait_queue_head_t poll;
int event;
};
extern int copy_namespace(int, struct task_struct *);
extern void __put_namespace(struct namespace *namespace);
extern struct namespace *dup_namespace(struct task_struct *, struct fs_struct *);
static inline void put_namespace(struct namespace *namespace)
{
if (atomic_dec_and_lock(&namespace->count, &vfsmount_lock))
/* releases vfsmount_lock */
__put_namespace(namespace);
}
static inline void exit_namespace(struct task_struct *p)
{
struct namespace *namespace = p->nsproxy->namespace;
if (namespace) {
put_namespace(namespace);
}
}
static inline void get_namespace(struct namespace *namespace)
{
atomic_inc(&namespace->count);
}
#endif
#endif

4
include/linux/nsproxy.h
View file

@ -4,7 +4,7 @@
#include <linux/spinlock.h>
#include <linux/sched.h>
struct namespace;
struct mnt_namespace;
struct uts_namespace;
struct ipc_namespace;
@ -25,7 +25,7 @@ struct nsproxy {
spinlock_t nslock;
struct uts_namespace *uts_ns;
struct ipc_namespace *ipc_ns;
struct namespace *namespace;
struct mnt_namespace *mnt_ns;
};
extern struct nsproxy init_nsproxy;

2
kernel/exit.c
View file

@ -13,7 +13,7 @@
#include <linux/completion.h>
#include <linux/personality.h>
#include <linux/tty.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/key.h>
#include <linux/security.h>
#include <linux/cpu.h>

21
kernel/fork.c
View file

@ -18,7 +18,7 @@
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/completion.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/personality.h>
#include <linux/mempolicy.h>
#include <linux/sem.h>
@ -1525,17 +1525,18 @@ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp)
}
/*
* Unshare the namespace structure if it is being shared
* Unshare the mnt_namespace structure if it is being shared
*/
static int unshare_namespace(unsigned long unshare_flags, struct namespace **new_nsp, struct fs_struct *new_fs)
static int unshare_mnt_namespace(unsigned long unshare_flags,
struct mnt_namespace **new_nsp, struct fs_struct *new_fs)
{
struct namespace *ns = current->nsproxy->namespace;
struct mnt_namespace *ns = current->nsproxy->mnt_ns;
if ((unshare_flags & CLONE_NEWNS) && ns) {
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
*new_nsp = dup_namespace(current, new_fs ? new_fs : current->fs);
*new_nsp = dup_mnt_ns(current, new_fs ? new_fs : current->fs);
if (!*new_nsp)
return -ENOMEM;
}
@ -1623,7 +1624,7 @@ asmlinkage long sys_unshare(unsigned long unshare_flags)
{
int err = 0;
struct fs_struct *fs, *new_fs = NULL;
struct namespace *ns, *new_ns = NULL;
struct mnt_namespace *ns, *new_ns = NULL;
struct sighand_struct *new_sigh = NULL;
struct mm_struct *mm, *new_mm = NULL, *active_mm = NULL;
struct files_struct *fd, *new_fd = NULL;
@ -1645,7 +1646,7 @@ asmlinkage long sys_unshare(unsigned long unshare_flags)
goto bad_unshare_out;
if ((err = unshare_fs(unshare_flags, &new_fs)))
goto bad_unshare_cleanup_thread;
if ((err = unshare_namespace(unshare_flags, &new_ns, new_fs)))
if ((err = unshare_mnt_namespace(unshare_flags, &new_ns, new_fs)))
goto bad_unshare_cleanup_fs;
if ((err = unshare_sighand(unshare_flags, &new_sigh)))
goto bad_unshare_cleanup_ns;
@ -1686,8 +1687,8 @@ asmlinkage long sys_unshare(unsigned long unshare_flags)
}
if (new_ns) {
ns = current->nsproxy->namespace;
current->nsproxy->namespace = new_ns;
ns = current->nsproxy->mnt_ns;
current->nsproxy->mnt_ns = new_ns;
new_ns = ns;
}
@ -1748,7 +1749,7 @@ bad_unshare_cleanup_sigh:
bad_unshare_cleanup_ns:
if (new_ns)
put_namespace(new_ns);
put_mnt_ns(new_ns);
bad_unshare_cleanup_fs:
if (new_fs)

2
kernel/kmod.c
View file

@ -25,7 +25,7 @@
#include <linux/kmod.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/completion.h>
#include <linux/file.h>
#include <linux/workqueue.h>

16
kernel/nsproxy.c
View file

@ -17,7 +17,7 @@
#include <linux/version.h>
#include <linux/nsproxy.h>
#include <linux/init_task.h>
#include <linux/namespace.h>
#include <linux/mnt_namespace.h>
#include <linux/utsname.h>
struct nsproxy init_nsproxy = INIT_NSPROXY(init_nsproxy);
@ -60,8 +60,8 @@ struct nsproxy *dup_namespaces(struct nsproxy *orig)
struct nsproxy *ns = clone_namespaces(orig);
if (ns) {
if (ns->namespace)
get_namespace(ns->namespace);
if (ns->mnt_ns)
get_mnt_ns(ns->mnt_ns);
if (ns->uts_ns)
get_uts_ns(ns->uts_ns);
if (ns->ipc_ns)
@ -97,7 +97,7 @@ int copy_namespaces(int flags, struct task_struct *tsk)
tsk->nsproxy = new_ns;
err = copy_namespace(flags, tsk);
err = copy_mnt_ns(flags, tsk);
if (err)
goto out_ns;
@ -117,8 +117,8 @@ out_ipc:
if (new_ns->uts_ns)
put_uts_ns(new_ns->uts_ns);
out_uts:
if (new_ns->namespace)
put_namespace(new_ns->namespace);
if (new_ns->mnt_ns)
put_mnt_ns(new_ns->mnt_ns);
out_ns:
tsk->nsproxy = old_ns;
kfree(new_ns);
@ -127,8 +127,8 @@ out_ns:
void free_nsproxy(struct nsproxy *ns)
{
if (ns->namespace)
put_namespace(ns->namespace);
if (ns->mnt_ns)
put_mnt_ns(ns->mnt_ns);
if (ns->uts_ns)
put_uts_ns(ns->uts_ns);
if (ns->ipc_ns)