[PATCH] kill altroot

long overdue...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/namei.c b/fs/namei.c
index 6c76e1e..0958180 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -31,7 +31,6 @@
 #include <linux/file.h>
 #include <linux/fcntl.h>
 #include <linux/device_cgroup.h>
-#include <asm/namei.h>
 #include <asm/uaccess.h>
 
 #define ACC_MODE(x) ("\000\004\002\006"[(x)&O_ACCMODE])
@@ -562,27 +561,16 @@ out_unlock:
        return result;
 }
 
-static int __emul_lookup_dentry(const char *, struct nameidata *);
-
 /* SMP-safe */
-static __always_inline int
+static __always_inline void
 walk_init_root(const char *name, struct nameidata *nd)
 {
        struct fs_struct *fs = current->fs;
 
        read_lock(&fs->lock);
-       if (fs->altroot.dentry && !(nd->flags & LOOKUP_NOALT)) {
-               nd->path = fs->altroot;
-               path_get(&fs->altroot);
-               read_unlock(&fs->lock);
-               if (__emul_lookup_dentry(name,nd))
-                       return 0;
-               read_lock(&fs->lock);
-       }
        nd->path = fs->root;
        path_get(&fs->root);
        read_unlock(&fs->lock);
-       return 1;
 }
 
 /*
@@ -623,12 +611,9 @@ static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *l
 
        if (*link == '/') {
                path_put(&nd->path);
-               if (!walk_init_root(link, nd))
-                       /* weird __emul_prefix() stuff did it */
-                       goto out;
+               walk_init_root(link, nd);
        }
        res = link_path_walk(link, nd);
-out:
        if (nd->depth || res || nd->last_type!=LAST_NORM)
                return res;
        /*
@@ -1077,67 +1062,6 @@ static int path_walk(const char *name, struct nameidata *nd)
        return link_path_walk(name, nd);
 }
 
-/* 
- * SMP-safe: Returns 1 and nd will have valid dentry and mnt, if
- * everything is done. Returns 0 and drops input nd, if lookup failed;
- */
-static int __emul_lookup_dentry(const char *name, struct nameidata *nd)
-{
-       if (path_walk(name, nd))
-               return 0;               /* something went wrong... */
-
-       if (!nd->path.dentry->d_inode ||
-           S_ISDIR(nd->path.dentry->d_inode->i_mode)) {
-               struct path old_path = nd->path;
-               struct qstr last = nd->last;
-               int last_type = nd->last_type;
-               struct fs_struct *fs = current->fs;
-
-               /*
-                * NAME was not found in alternate root or it's a directory.
-                * Try to find it in the normal root:
-                */
-               nd->last_type = LAST_ROOT;
-               read_lock(&fs->lock);
-               nd->path = fs->root;
-               path_get(&fs->root);
-               read_unlock(&fs->lock);
-               if (path_walk(name, nd) == 0) {
-                       if (nd->path.dentry->d_inode) {
-                               path_put(&old_path);
-                               return 1;
-                       }
-                       path_put(&nd->path);
-               }
-               nd->path = old_path;
-               nd->last = last;
-               nd->last_type = last_type;
-       }
-       return 1;
-}
-
-void set_fs_altroot(void)
-{
-       char *emul = __emul_prefix();
-       struct nameidata nd;
-       struct path path = {}, old_path;
-       int err;
-       struct fs_struct *fs = current->fs;
-
-       if (!emul)
-               goto set_it;
-       err = path_lookup(emul, LOOKUP_FOLLOW|LOOKUP_DIRECTORY|LOOKUP_NOALT, &nd);
-       if (!err)
-               path = nd.path;
-set_it:
-       write_lock(&fs->lock);
-       old_path = fs->altroot;
-       fs->altroot = path;
-       write_unlock(&fs->lock);
-       if (old_path.dentry)
-               path_put(&old_path);
-}
-
 /* Returns 0 and nd will be valid on success; Retuns error, otherwise. */
 static int do_path_lookup(int dfd, const char *name,
                                unsigned int flags, struct nameidata *nd)
@@ -1153,14 +1077,6 @@ static int do_path_lookup(int dfd, const char *name,
 
        if (*name=='/') {
                read_lock(&fs->lock);
-               if (fs->altroot.dentry && !(nd->flags & LOOKUP_NOALT)) {
-                       nd->path = fs->altroot;
-                       path_get(&fs->altroot);
-                       read_unlock(&fs->lock);
-                       if (__emul_lookup_dentry(name,nd))
-                               goto out; /* found in altroot */
-                       read_lock(&fs->lock);
-               }
                nd->path = fs->root;
                path_get(&fs->root);
                read_unlock(&fs->lock);
@@ -1194,7 +1110,6 @@ static int do_path_lookup(int dfd, const char *name,
        }
 
        retval = path_walk(name, nd);
-out:
        if (unlikely(!retval && !audit_dummy_context() && nd->path.dentry &&
                                nd->path.dentry->d_inode))
                audit_inode(name, nd->path.dentry);

diff --git a/fs/namespace.c b/fs/namespace.c
index f30b11e..c4fcf48 100644 (file)
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1972,7 +1972,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
                struct fs_struct *fs)
 {
        struct mnt_namespace *new_ns;
-       struct vfsmount *rootmnt = NULL, *pwdmnt = NULL, *altrootmnt = NULL;
+       struct vfsmount *rootmnt = NULL, *pwdmnt = NULL;
        struct vfsmount *p, *q;
 
        new_ns = kmalloc(sizeof(struct mnt_namespace), GFP_KERNEL);
@@ -2015,10 +2015,6 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
                                pwdmnt = p;
                                fs->pwd.mnt = mntget(q);
                        }
-                       if (p == fs->altroot.mnt) {
-                               altrootmnt = p;
-                               fs->altroot.mnt = mntget(q);
-                       }
                }
                p = next_mnt(p, mnt_ns->root);
                q = next_mnt(q, new_ns->root);
@@ -2029,8 +2025,6 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
                mntput(rootmnt);
        if (pwdmnt)
                mntput(pwdmnt);
-       if (altrootmnt)
-               mntput(altrootmnt);
 
        return new_ns;
 }

diff --git a/fs/open.c b/fs/open.c
index 8e02d42..d3a2a00 100644 (file)
--- a/fs/open.c
+++ b/fs/open.c
@@ -548,7 +548,7 @@ asmlinkage long sys_chroot(const char __user * filename)
        struct nameidata nd;
        int error;
 
-       error = __user_walk(filename, LOOKUP_FOLLOW | LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd);
+       error = __user_walk(filename, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &nd);
        if (error)
                goto out;
 
@@ -561,7 +561,6 @@ asmlinkage long sys_chroot(const char __user * filename)
                goto dput_and_out;
 
        set_fs_root(current->fs, &nd.path);
-       set_fs_altroot();
        error = 0;
 dput_and_out:
        path_put(&nd.path);

diff --git a/include/asm-alpha/namei.h b/include/asm-alpha/namei.h
deleted file mode 100644 (file)
index 5cc9bb3..0000000
--- a/include/asm-alpha/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* $Id: namei.h,v 1.1 1996/12/13 14:48:21 jj Exp $
- * linux/include/asm-alpha/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __ALPHA_NAMEI_H
-#define __ALPHA_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __ALPHA_NAMEI_H */

diff --git a/include/asm-arm/namei.h b/include/asm-arm/namei.h
deleted file mode 100644 (file)
index a402d3b..0000000
--- a/include/asm-arm/namei.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* 
- * linux/include/asm-arm/namei.h
- *
- * Routines to handle famous /usr/gnemul
- * Derived from the Sparc version of this file
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __ASMARM_NAMEI_H
-#define __ASMARM_NAMEI_H
-
-#define ARM_BSD_EMUL "usr/gnemul/bsd/"
-
-static inline char *__emul_prefix(void)
-{
-       switch (current->personality) {
-       case PER_BSD:
-               return ARM_BSD_EMUL;
-       default:
-               return NULL;
-       }
-}
-
-#endif /* __ASMARM_NAMEI_H */

diff --git a/include/asm-avr32/namei.h b/include/asm-avr32/namei.h
deleted file mode 100644 (file)
index f0a26de..0000000
--- a/include/asm-avr32/namei.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef __ASM_AVR32_NAMEI_H
-#define __ASM_AVR32_NAMEI_H
-
-/* This dummy routine may be changed to something useful */
-#define __emul_prefix() NULL
-
-#endif /* __ASM_AVR32_NAMEI_H */

diff --git a/include/asm-blackfin/namei.h b/include/asm-blackfin/namei.h
deleted file mode 100644 (file)
index 8b89a2d..0000000
--- a/include/asm-blackfin/namei.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * linux/include/asm/namei.h
- *
- * Included from linux/fs/namei.c
- *
- * Changes made by Lineo Inc.    May 2001
- */
-
-#ifndef __BFIN_NAMEI_H
-#define __BFIN_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif

diff --git a/include/asm-cris/namei.h b/include/asm-cris/namei.h
deleted file mode 100644 (file)
index 8a3be7a..0000000
--- a/include/asm-cris/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* $Id: namei.h,v 1.1 2000/07/10 16:32:31 bjornw Exp $
- * linux/include/asm-cris/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __CRIS_NAMEI_H
-#define __CRIS_NAMEI_H
-
-/* used to find file-system prefixes for doing emulations
- * see for example asm-sparc/namei.h
- * we don't use it...
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __CRIS_NAMEI_H */

diff --git a/include/asm-frv/namei.h b/include/asm-frv/namei.h
deleted file mode 100644 (file)
index 4ea5717..0000000
--- a/include/asm-frv/namei.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * include/asm-frv/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __ASM_NAMEI_H
-#define __ASM_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif
-

diff --git a/include/asm-h8300/namei.h b/include/asm-h8300/namei.h
deleted file mode 100644 (file)
index ab6f196..0000000
--- a/include/asm-h8300/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * linux/include/asm-h8300/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __H8300_NAMEI_H
-#define __H8300_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif

diff --git a/include/asm-ia64/namei.h b/include/asm-ia64/namei.h
deleted file mode 100644 (file)
index 78e7680..0000000
--- a/include/asm-ia64/namei.h
+++ /dev/null
@@ -1,25 +0,0 @@
-#ifndef _ASM_IA64_NAMEI_H
-#define _ASM_IA64_NAMEI_H
-
-/*
- * Modified 1998, 1999, 2001
- *     David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
- */
-
-#include <asm/ptrace.h>
-#include <asm/system.h>
-
-#define EMUL_PREFIX_LINUX_IA32 "/emul/ia32-linux/"
-
-static inline char *
-__emul_prefix (void)
-{
-       switch (current->personality) {
-             case PER_LINUX32:
-               return EMUL_PREFIX_LINUX_IA32;
-             default:
-               return NULL;
-       }
-}
-
-#endif /* _ASM_IA64_NAMEI_H */

diff --git a/include/asm-m32r/namei.h b/include/asm-m32r/namei.h
deleted file mode 100644 (file)
index 210f805..0000000
--- a/include/asm-m32r/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef _ASM_M32R_NAMEI_H
-#define _ASM_M32R_NAMEI_H
-
-/*
- * linux/include/asm-m32r/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* _ASM_M32R_NAMEI_H */

diff --git a/include/asm-m68k/namei.h b/include/asm-m68k/namei.h
deleted file mode 100644 (file)
index f33f243..0000000
--- a/include/asm-m68k/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * linux/include/asm-m68k/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __M68K_NAMEI_H
-#define __M68K_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif

diff --git a/include/asm-m68knommu/namei.h b/include/asm-m68knommu/namei.h
deleted file mode 100644 (file)
index 31a85d2..0000000
--- a/include/asm-m68knommu/namei.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-m68k/namei.h>

diff --git a/include/asm-mips/namei.h b/include/asm-mips/namei.h
deleted file mode 100644 (file)
index a6605a7..0000000
--- a/include/asm-mips/namei.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef _ASM_NAMEI_H
-#define _ASM_NAMEI_H
-
-/*
- * This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* _ASM_NAMEI_H */

diff --git a/include/asm-mn10300/namei.h b/include/asm-mn10300/namei.h
deleted file mode 100644 (file)
index bd9ce94..0000000
--- a/include/asm-mn10300/namei.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Emulation stuff
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#ifndef _ASM_NAMEI_H
-#define _ASM_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* _ASM_NAMEI_H */

diff --git a/include/asm-parisc/namei.h b/include/asm-parisc/namei.h
deleted file mode 100644 (file)
index 8d29b3d..0000000
--- a/include/asm-parisc/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* $Id: namei.h,v 1.1 1996/12/13 14:48:21 jj Exp $
- * linux/include/asm-parisc/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __PARISC_NAMEI_H
-#define __PARISC_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __PARISC_NAMEI_H */

diff --git a/include/asm-powerpc/namei.h b/include/asm-powerpc/namei.h
deleted file mode 100644 (file)
index 6574434..0000000
--- a/include/asm-powerpc/namei.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#ifndef _ASM_POWERPC_NAMEI_H
-#define _ASM_POWERPC_NAMEI_H
-
-#ifdef __KERNEL__
-
-/*
- * Adapted from include/asm-alpha/namei.h
- *
- * Included from fs/namei.c
- */
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __KERNEL__ */
-#endif /* _ASM_POWERPC_NAMEI_H */

diff --git a/include/asm-s390/namei.h b/include/asm-s390/namei.h
deleted file mode 100644 (file)
index 3e286bd..0000000
--- a/include/asm-s390/namei.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- *  include/asm-s390/namei.h
- *
- *  S390 version
- *
- *  Derived from "include/asm-i386/namei.h"
- *
- *  Included from linux/fs/namei.c
- */
-
-#ifndef __S390_NAMEI_H
-#define __S390_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __S390_NAMEI_H */

diff --git a/include/asm-sh/namei.h b/include/asm-sh/namei.h
deleted file mode 100644 (file)
index 338a5d9..0000000
--- a/include/asm-sh/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* $Id: namei.h,v 1.3 2000/07/04 06:24:49 gniibe Exp $
- * linux/include/asm-sh/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __ASM_SH_NAMEI_H
-#define __ASM_SH_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __ASM_SH_NAMEI_H */

diff --git a/include/asm-sparc/namei.h b/include/asm-sparc/namei.h
deleted file mode 100644 (file)
index eff944b..0000000
--- a/include/asm-sparc/namei.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef ___ASM_SPARC_NAMEI_H
-#define ___ASM_SPARC_NAMEI_H
-#if defined(__sparc__) && defined(__arch64__)
-#include <asm-sparc/namei_64.h>
-#else
-#include <asm-sparc/namei_32.h>
-#endif
-#endif

diff --git a/include/asm-sparc64/namei.h b/include/asm-sparc64/namei.h
deleted file mode 100644 (file)
index 1344a91..0000000
--- a/include/asm-sparc64/namei.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-sparc/namei.h>

diff --git a/include/asm-um/namei.h b/include/asm-um/namei.h
deleted file mode 100644 (file)
index 002984d..0000000
--- a/include/asm-um/namei.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef __UM_NAMEI_H
-#define __UM_NAMEI_H
-
-#include "asm/arch/namei.h"
-
-#endif

diff --git a/include/asm-v850/namei.h b/include/asm-v850/namei.h
deleted file mode 100644 (file)
index ee8339b..0000000
--- a/include/asm-v850/namei.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * linux/include/asm-v850/namei.h
- *
- * Included from linux/fs/namei.c
- */
-
-#ifndef __V850_NAMEI_H__
-#define __V850_NAMEI_H__
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __V850_NAMEI_H__ */

diff --git a/include/asm-x86/namei.h b/include/asm-x86/namei.h
deleted file mode 100644 (file)
index 415ef5d..0000000
--- a/include/asm-x86/namei.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef _ASM_X86_NAMEI_H
-#define _ASM_X86_NAMEI_H
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* _ASM_X86_NAMEI_H */

diff --git a/include/asm-xtensa/namei.h b/include/asm-xtensa/namei.h
deleted file mode 100644 (file)
index 3fdff03..0000000
--- a/include/asm-xtensa/namei.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * include/asm-xtensa/namei.h
- *
- * Included from linux/fs/namei.c
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001 - 2005 Tensilica Inc.
- */
-
-#ifndef _XTENSA_NAMEI_H
-#define _XTENSA_NAMEI_H
-
-#ifdef __KERNEL__
-
-/* This dummy routine maybe changed to something useful
- * for /usr/gnemul/ emulation stuff.
- * Look at asm-sparc/namei.h for details.
- */
-
-#define __emul_prefix() NULL
-
-#endif /* __KERNEL__ */
-#endif /* _XTENSA_NAMEI_H */

diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h
index 282f542..9e5a06e 100644 (file)
--- a/include/linux/fs_struct.h
+++ b/include/linux/fs_struct.h
@@ -7,7 +7,7 @@ struct fs_struct {
        atomic_t count;
        rwlock_t lock;
        int umask;
-       struct path root, pwd, altroot;
+       struct path root, pwd;
 };
 
 #define INIT_FS {                              \
@@ -19,7 +19,6 @@ struct fs_struct {
 extern struct kmem_cache *fs_cachep;
 
 extern void exit_fs(struct task_struct *);
-extern void set_fs_altroot(void);
 extern void set_fs_root(struct fs_struct *, struct path *);
 extern void set_fs_pwd(struct fs_struct *, struct path *);
 extern struct fs_struct *copy_fs_struct(struct fs_struct *);

diff --git a/include/linux/namei.h b/include/linux/namei.h
index 3cf62d2..768773d 100644 (file)
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -47,7 +47,6 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
 #define LOOKUP_DIRECTORY        2
 #define LOOKUP_CONTINUE                 4
 #define LOOKUP_PARENT          16
-#define LOOKUP_NOALT           32
 #define LOOKUP_REVAL           64
 /*
  * Intent data

diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
index c1ef192..0d407e8 100644 (file)
--- a/kernel/exec_domain.c
+++ b/kernel/exec_domain.c
@@ -168,7 +168,6 @@ __set_personality(u_long personality)
        current->personality = personality;
        oep = current_thread_info()->exec_domain;
        current_thread_info()->exec_domain = ep;
-       set_fs_altroot();
 
        module_put(oep->module);
        return 0;

diff --git a/kernel/exit.c b/kernel/exit.c
index 6cdf607..0caf590 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -565,8 +565,6 @@ void put_fs_struct(struct fs_struct *fs)
        if (atomic_dec_and_test(&fs->count)) {
                path_put(&fs->root);
                path_put(&fs->pwd);
-               if (fs->altroot.dentry)
-                       path_put(&fs->altroot);
                kmem_cache_free(fs_cachep, fs);
        }
 }

diff --git a/kernel/fork.c b/kernel/fork.c
index abb3ed6..5e050c1 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -657,13 +657,6 @@ static struct fs_struct *__copy_fs_struct(struct fs_struct *old)
                path_get(&old->root);
                fs->pwd = old->pwd;
                path_get(&old->pwd);
-               if (old->altroot.dentry) {
-                       fs->altroot = old->altroot;
-                       path_get(&old->altroot);
-               } else {
-                       fs->altroot.mnt = NULL;
-                       fs->altroot.dentry = NULL;
-               }
                read_unlock(&old->lock);
        }
        return fs;