diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/afs/mntpt.c | 2 | ||||
| -rw-r--r-- | fs/namespace.c | 113 | ||||
| -rw-r--r-- | fs/nfs/getroot.c | 2 | ||||
| -rw-r--r-- | fs/pnode.c | 2 | ||||
| -rw-r--r-- | fs/pnode.h | 2 | ||||
| -rw-r--r-- | fs/proc/base.c | 36 | ||||
| -rw-r--r-- | fs/reiserfs/super.c | 2 |
7 files changed, 80 insertions, 79 deletions
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index f33b1a8..8f74e84 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -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" diff --git a/fs/namespace.c b/fs/namespace.c index b00ac84..fde8553 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -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; - - init_task.nsproxy->namespace = namespace; - get_namespace(namespace); - - set_fs_pwd(current->fs, namespace->root, namespace->root->mnt_root); - set_fs_root(current->fs, namespace->root, namespace->root->mnt_root); + 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->mnt_ns = ns; + get_mnt_ns(ns); + + 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); } diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index 20c6f39..8391bd7 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -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> @@ -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" @@ -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) diff --git a/fs/proc/base.c b/fs/proc/base.c index a71f175..a3b50741 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -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; diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 7fb5fb0..58ad455 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -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> |
