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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

Browse source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (22 commits)
  Fix the race between capifs remount and node creation
  Fix races around the access to ->s_options
  switch ufs directories to ufs_sync_file()
  Switch open_exec() and sys_uselib() to do_open_filp()
  Make open_exec() and sys_uselib() use may_open(), instead of duplicating its parts
  Reduce path_lookup() abuses
  Make checkpatch.pl shut up on fs/inode.c
  NULL noise in fs/super.c:kill_bdev_super()
  romfs: cleanup romfs_fs.h
  ROMFS: romfs_dev_read() error ignored
  fs: dcache fix LRU ordering
  ocfs2: Use nd_set_link().
  Fix deadlock in ipathfs ->get_sb()
  Fix a leak in failure exit in 9p ->get_sb()
  Convert obvious places to deactivate_locked_super()
  New helper: deactivate_locked_super()
  reiserfs: remove privroot hiding in lookup
  reiserfs: dont associate security.* with xattr files
  reiserfs: fixup xattr_root caching
  Always lookup priv_root on reiserfs mount and keep it
  ...
This commit is contained in:
Linus Torvalds 2009-05-10 10:49:08 -07:00
commit 93b49d45eb
44 changed files with 374 additions and 387 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/infiniband/hw/ipath/ipath_fs.c
View file

@ -347,7 +347,7 @@ static int ipathfs_fill_super(struct super_block *sb, void *data,
spin_unlock_irqrestore(&ipath_devs_lock, flags);
ret = create_device_files(sb, dd);
if (ret) {
deactivate_super(sb);
deactivate_locked_super(sb);
goto bail;
}
spin_lock_irqsave(&ipath_devs_lock, flags);

11
drivers/isdn/capi/capifs.c
View file

@ -75,15 +75,17 @@ static int capifs_remount(struct super_block *s, int *flags, char *data)
}
}
kfree(s->s_options);
s->s_options = new_opt;
mutex_lock(&s->s_root->d_inode->i_mutex);
replace_mount_options(s, new_opt);
config.setuid = setuid;
config.setgid = setgid;
config.uid = uid;
config.gid = gid;
config.mode = mode;
mutex_unlock(&s->s_root->d_inode->i_mutex);
return 0;
}
@ -154,13 +156,16 @@ void capifs_new_ncci(unsigned int number, dev_t device)
if (!inode)
return;
inode->i_ino = number+2;
dentry = get_node(number);
/* config contents is protected by root's i_mutex */
inode->i_uid = config.setuid ? config.uid : current_fsuid();
inode->i_gid = config.setgid ? config.gid : current_fsgid();
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
init_special_inode(inode, S_IFCHR|config.mode, device);
//inode->i_op = &capifs_file_inode_operations;
dentry = get_node(number);
if (!IS_ERR(dentry) && !dentry->d_inode)
d_instantiate(dentry, inode);
mutex_unlock(&capifs_root->d_inode->i_mutex);

3
drivers/mtd/mtdsuper.c
View file

@ -74,8 +74,7 @@ static int get_sb_mtd_aux(struct file_system_type *fs_type, int flags,
ret = fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
if (ret < 0) {
up_write(&sb->s_umount);
deactivate_super(sb);
deactivate_locked_super(sb);
return ret;
}

20
drivers/scsi/osd/osd_uld.c
View file

@ -173,26 +173,26 @@ static const struct file_operations osd_fops = {
.unlocked_ioctl = osd_uld_ioctl,
};
struct osd_dev *osduld_path_lookup(const char *path)
struct osd_dev *osduld_path_lookup(const char *name)
{
struct nameidata nd;
struct path path;
struct inode *inode;
struct cdev *cdev;
struct osd_uld_device *uninitialized_var(oud);
int error;
if (!path || !*path) {
if (!name || !*name) {
OSD_ERR("Mount with !path || !*path\n");
return ERR_PTR(-EINVAL);
}
error = path_lookup(path, LOOKUP_FOLLOW, &nd);
error = kern_path(name, LOOKUP_FOLLOW, &path);
if (error) {
OSD_ERR("path_lookup of %s faild=>%d\n", path, error);
OSD_ERR("path_lookup of %s failed=>%d\n", name, error);
return ERR_PTR(error);
}
inode = nd.path.dentry->d_inode;
inode = path.dentry->d_inode;
error = -EINVAL; /* Not the right device e.g osd_uld_device */
if (!S_ISCHR(inode->i_mode)) {
OSD_DEBUG("!S_ISCHR()\n");
@ -202,15 +202,15 @@ struct osd_dev *osduld_path_lookup(const char *path)
cdev = inode->i_cdev;
if (!cdev) {
OSD_ERR("Before mounting an OSD Based filesystem\n");
OSD_ERR(" user-mode must open+close the %s device\n", path);
OSD_ERR(" Example: bash: echo < %s\n", path);
OSD_ERR(" user-mode must open+close the %s device\n", name);
OSD_ERR(" Example: bash: echo < %s\n", name);
goto out;
}
/* The Magic wand. Is it our char-dev */
/* TODO: Support sg devices */
if (cdev->owner != THIS_MODULE) {
OSD_ERR("Error mounting %s - is not an OSD device\n", path);
OSD_ERR("Error mounting %s - is not an OSD device\n", name);
goto out;
}
@ -220,7 +220,7 @@ struct osd_dev *osduld_path_lookup(const char *path)
error = 0;
out:
path_put(&nd.path);
path_put(&path);
return error ? ERR_PTR(error) : &oud->od;
}
EXPORT_SYMBOL(osduld_path_lookup);

12
fs/9p/vfs_super.c
View file

@ -37,6 +37,7 @@
#include <linux/mount.h>
#include <linux/idr.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@ -155,6 +156,7 @@ static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
root = d_alloc_root(inode);
if (!root) {
iput(inode);
retval = -ENOMEM;
goto release_sb;
}
@ -173,10 +175,7 @@ P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n");
return 0;
release_sb:
if (sb) {
up_write(&sb->s_umount);
deactivate_super(sb);
}
deactivate_locked_super(sb);
free_stat:
kfree(st);
@ -230,9 +229,12 @@ static int v9fs_show_options(struct seq_file *m, struct vfsmount *mnt)
static void
v9fs_umount_begin(struct super_block *sb)
{
struct v9fs_session_info *v9ses = sb->s_fs_info;
struct v9fs_session_info *v9ses;
lock_kernel();
v9ses = sb->s_fs_info;
v9fs_session_cancel(v9ses);
unlock_kernel();
}
static const struct super_operations v9fs_super_ops = {

3
fs/affs/super.c
View file

@ -507,8 +507,7 @@ affs_remount(struct super_block *sb, int *flags, char *data)
kfree(new_opts);
return -EINVAL;
}
kfree(sb->s_options);
sb->s_options = new_opts;
replace_mount_options(sb, new_opts);
sbi->s_flags = mount_flags;
sbi->s_mode = mode;

7
fs/afs/super.c
View file

@ -405,21 +405,20 @@ static int afs_get_sb(struct file_system_type *fs_type,
sb->s_flags = flags;
ret = afs_fill_super(sb, &params);
if (ret < 0) {
up_write(&sb->s_umount);
deactivate_super(sb);
deactivate_locked_super(sb);
goto error;
}
sb->s_options = new_opts;
save_mount_options(sb, new_opts);
sb->s_flags |= MS_ACTIVE;
} else {
_debug("reuse");
kfree(new_opts);
ASSERTCMP(sb->s_flags, &, MS_ACTIVE);
}
simple_set_mnt(mnt, sb);
afs_put_volume(params.volume);
afs_put_cell(params.cell);
kfree(new_opts);
_leave(" = 0 [%p]", sb);
return 0;

12
fs/btrfs/super.c
View file

@ -502,8 +502,7 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
if (s->s_root) {
if ((flags ^ s->s_flags) & MS_RDONLY) {
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
error = -EBUSY;
goto error_close_devices;
}
@ -517,8 +516,7 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
error = btrfs_fill_super(s, fs_devices, data,
flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
goto error_free_subvol_name;
}
@ -535,15 +533,13 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
mutex_unlock(&s->s_root->d_inode->i_mutex);
if (IS_ERR(root)) {
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
error = PTR_ERR(root);
goto error_free_subvol_name;
}
if (!root->d_inode) {
dput(root);
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
error = -ENXIO;
goto error_free_subvol_name;
}

6
fs/cifs/cifsfs.c
View file

@ -35,6 +35,7 @@
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/smp_lock.h>
#include "cifsfs.h"
#include "cifspdu.h"
#define DECLARE_GLOBALS_HERE
@ -530,6 +531,7 @@ static void cifs_umount_begin(struct super_block *sb)
if (tcon == NULL)
return;
lock_kernel();
read_lock(&cifs_tcp_ses_lock);
if (tcon->tc_count == 1)
tcon->tidStatus = CifsExiting;
@ -548,6 +550,7 @@ static void cifs_umount_begin(struct super_block *sb)
}
/* BB FIXME - finish add checks for tidStatus BB */
unlock_kernel();
return;
}
@ -599,8 +602,7 @@ cifs_get_sb(struct file_system_type *fs_type,
rc = cifs_read_super(sb, data, dev_name, flags & MS_SILENT ? 1 : 0);
if (rc) {
up_write(&sb->s_umount);
deactivate_super(sb);
deactivate_locked_super(sb);
return rc;
}
sb->s_flags |= MS_ACTIVE;

2
fs/dcache.c
View file

@ -481,7 +481,7 @@ restart:
if ((flags & DCACHE_REFERENCED)
&& (dentry->d_flags & DCACHE_REFERENCED)) {
dentry->d_flags &= ~DCACHE_REFERENCED;
list_move_tail(&dentry->d_lru, &referenced);
list_move(&dentry->d_lru, &referenced);
spin_unlock(&dentry->d_lock);
} else {
list_move_tail(&dentry->d_lru, &tmp);

5
fs/devpts/inode.c
View file

@ -389,11 +389,10 @@ static int devpts_get_sb(struct file_system_type *fs_type,
return 0;
out_dput:
dput(s->s_root);
dput(s->s_root); /* undo dget() in simple_set_mnt() */
out_undo_sget:
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
return error;
}

5
fs/ecryptfs/main.c
View file

@ -614,9 +614,8 @@ static int ecryptfs_get_sb(struct file_system_type *fs_type, int flags,
}
goto out;
out_abort:
dput(sb->s_root);
up_write(&sb->s_umount);
deactivate_super(sb);
dput(sb->s_root); /* aka mnt->mnt_root, as set by get_sb_nodev() */
deactivate_locked_super(sb);
out:
return rc;
}

83
fs/exec.c
View file

@ -105,40 +105,28 @@ static inline void put_binfmt(struct linux_binfmt * fmt)
SYSCALL_DEFINE1(uselib, const char __user *, library)
{
struct file *file;
struct nameidata nd;
char *tmp = getname(library);
int error = PTR_ERR(tmp);
if (!IS_ERR(tmp)) {
error = path_lookup_open(AT_FDCWD, tmp,
LOOKUP_FOLLOW, &nd,
FMODE_READ|FMODE_EXEC);
putname(tmp);
}
if (error)
if (IS_ERR(tmp))
goto out;
error = -EINVAL;
if (!S_ISREG(nd.path.dentry->d_inode->i_mode))
goto exit;
error = -EACCES;
if (nd.path.mnt->mnt_flags & MNT_NOEXEC)
goto exit;
error = inode_permission(nd.path.dentry->d_inode,
MAY_READ | MAY_EXEC | MAY_OPEN);
if (error)
goto exit;
error = ima_path_check(&nd.path, MAY_READ | MAY_EXEC | MAY_OPEN);
if (error)
goto exit;
file = nameidata_to_filp(&nd, O_RDONLY|O_LARGEFILE);
file = do_filp_open(AT_FDCWD, tmp,
O_LARGEFILE | O_RDONLY | FMODE_EXEC, 0,
MAY_READ | MAY_EXEC | MAY_OPEN);
putname(tmp);
error = PTR_ERR(file);
if (IS_ERR(file))
goto out;
error = -EINVAL;
if (!S_ISREG(file->f_path.dentry->d_inode->i_mode))
goto exit;
error = -EACCES;
if (file->f_path.mnt->mnt_flags & MNT_NOEXEC)
goto exit;
fsnotify_open(file->f_path.dentry);
error = -ENOEXEC;
@ -160,13 +148,10 @@ SYSCALL_DEFINE1(uselib, const char __user *, library)
}
read_unlock(&binfmt_lock);
}
exit:
fput(file);
out:
return error;
exit:
release_open_intent(&nd);
path_put(&nd.path);
goto out;
}
#ifdef CONFIG_MMU
@ -661,47 +646,33 @@ EXPORT_SYMBOL(setup_arg_pages);
struct file *open_exec(const char *name)
{
struct nameidata nd;
struct file *file;
int err;
err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd,
FMODE_READ|FMODE_EXEC);
if (err)
file = do_filp_open(AT_FDCWD, name,
O_LARGEFILE | O_RDONLY | FMODE_EXEC, 0,
MAY_EXEC | MAY_OPEN);
if (IS_ERR(file))
goto out;
err = -EACCES;
if (!S_ISREG(nd.path.dentry->d_inode->i_mode))
goto out_path_put;
if (!S_ISREG(file->f_path.dentry->d_inode->i_mode))
goto exit;
if (nd.path.mnt->mnt_flags & MNT_NOEXEC)
goto out_path_put;
err = inode_permission(nd.path.dentry->d_inode, MAY_EXEC | MAY_OPEN);
if (err)
goto out_path_put;
err = ima_path_check(&nd.path, MAY_EXEC | MAY_OPEN);
if (err)
goto out_path_put;
file = nameidata_to_filp(&nd, O_RDONLY|O_LARGEFILE);
if (IS_ERR(file))
return file;
if (file->f_path.mnt->mnt_flags & MNT_NOEXEC)
goto exit;
fsnotify_open(file->f_path.dentry);
err = deny_write_access(file);
if (err) {
fput(file);
goto out;
}
if (err)
goto exit;
out:
return file;
out_path_put:
release_open_intent(&nd);
path_put(&nd.path);
out:
exit:
fput(file);
return ERR_PTR(err);
}
EXPORT_SYMBOL(open_exec);

3
fs/fuse/inode.c
View file

@ -19,6 +19,7 @@
#include <linux/random.h>
#include <linux/sched.h>
#include <linux/exportfs.h>
#include <linux/smp_lock.h>
MODULE_AUTHOR("Miklos Szeredi <miklos@szeredi.hu>");
MODULE_DESCRIPTION("Filesystem in Userspace");
@ -259,7 +260,9 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid,
static void fuse_umount_begin(struct super_block *sb)
{
lock_kernel();
fuse_abort_conn(get_fuse_conn_super(sb));
unlock_kernel();
}
static void fuse_send_destroy(struct fuse_conn *fc)

8
fs/gfs2/ops_fstype.c
View file

@ -1282,21 +1282,21 @@ static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
static struct super_block *get_gfs2_sb(const char *dev_name)
{
struct super_block *sb;
struct nameidata nd;
struct path path;
int error;
error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd);
error = kern_path(dev_name, LOOKUP_FOLLOW, &path);
if (error) {
printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n",
dev_name, error);
return NULL;
}
sb = nd.path.dentry->d_inode->i_sb;
sb = path.dentry->d_inode->i_sb;
if (sb && (sb->s_type == &gfs2_fs_type))
atomic_inc(&sb->s_active);
else
sb = NULL;
path_put(&nd.path);
path_put(&path);
return sb;
}

3
fs/hpfs/super.c
View file

@ -423,8 +423,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
if (!(*flags & MS_RDONLY)) mark_dirty(s);
kfree(s->s_options);
s->s_options = new_opts;
replace_mount_options(s, new_opts);
return 0;

81
fs/inode.c
View file

@ -99,7 +99,7 @@ static DEFINE_MUTEX(iprune_mutex);
*/
struct inodes_stat_t inodes_stat;
static struct kmem_cache * inode_cachep __read_mostly;
static struct kmem_cache *inode_cachep __read_mostly;
static void wake_up_inode(struct inode *inode)
{
@ -124,7 +124,7 @@ struct inode *inode_init_always(struct super_block *sb, struct inode *inode)
static struct inode_operations empty_iops;
static const struct file_operations empty_fops;
struct address_space * const mapping = &inode->i_data;
struct address_space *const mapping = &inode->i_data;
inode->i_sb = sb;
inode->i_blkbits = sb->s_blocksize_bits;
@ -216,7 +216,7 @@ static struct inode *alloc_inode(struct super_block *sb)
return NULL;
}
void destroy_inode(struct inode *inode)
void destroy_inode(struct inode *inode)
{
BUG_ON(inode_has_buffers(inode));
security_inode_free(inode);
@ -252,12 +252,11 @@ void inode_init_once(struct inode *inode)
mutex_init(&inode->inotify_mutex);
#endif
}
EXPORT_SYMBOL(inode_init_once);
static void init_once(void *foo)
{
struct inode * inode = (struct inode *) foo;
struct inode *inode = (struct inode *) foo;
inode_init_once(inode);
}
@ -265,7 +264,7 @@ static void init_once(void *foo)
/*
* inode_lock must be held
*/
void __iget(struct inode * inode)
void __iget(struct inode *inode)
{
if (atomic_read(&inode->i_count)) {
atomic_inc(&inode->i_count);
@ -289,7 +288,7 @@ void clear_inode(struct inode *inode)
{
might_sleep();
invalidate_inode_buffers(inode);
BUG_ON(inode->i_data.nrpages);
BUG_ON(!(inode->i_state & I_FREEING));
BUG_ON(inode->i_state & I_CLEAR);
@ -303,7 +302,6 @@ void clear_inode(struct inode *inode)
cd_forget(inode);
inode->i_state = I_CLEAR;
}
EXPORT_SYMBOL(clear_inode);
/*
@ -351,8 +349,8 @@ static int invalidate_list(struct list_head *head, struct list_head *dispose)
next = head->next;
for (;;) {
struct list_head * tmp = next;
struct inode * inode;
struct list_head *tmp = next;
struct inode *inode;
/*
* We can reschedule here without worrying about the list's
@ -391,7 +389,7 @@ static int invalidate_list(struct list_head *head, struct list_head *dispose)
* fails because there are busy inodes then a non zero value is returned.
* If the discard is successful all the inodes have been discarded.
*/
int invalidate_inodes(struct super_block * sb)
int invalidate_inodes(struct super_block *sb)
{
int busy;
LIST_HEAD(throw_away);
@ -407,7 +405,6 @@ int invalidate_inodes(struct super_block * sb)
return busy;
}
EXPORT_SYMBOL(invalidate_inodes);
static int can_unuse(struct inode *inode)
@ -504,7 +501,7 @@ static int shrink_icache_memory(int nr, gfp_t gfp_mask)
* Nasty deadlock avoidance. We may hold various FS locks,
* and we don't want to recurse into the FS that called us
* in clear_inode() and friends..
*/
*/
if (!(gfp_mask & __GFP_FS))
return -1;
prune_icache(nr);
@ -524,10 +521,13 @@ static void __wait_on_freeing_inode(struct inode *inode);
* by hand after calling find_inode now! This simplifies iunique and won't
* add any additional branch in the common code.
*/
static struct inode * find_inode(struct super_block * sb, struct hlist_head *head, int (*test)(struct inode *, void *), void *data)
static struct inode *find_inode(struct super_block *sb,
struct hlist_head *head,
int (*test)(struct inode *, void *),
void *data)
{
struct hlist_node *node;
struct inode * inode = NULL;
struct inode *inode = NULL;
repeat:
hlist_for_each_entry(inode, node, head, i_hash) {
@ -548,10 +548,11 @@ repeat:
* find_inode_fast is the fast path version of find_inode, see the comment at
* iget_locked for details.
*/
static struct inode * find_inode_fast(struct super_block * sb, struct hlist_head *head, unsigned long ino)
static struct inode *find_inode_fast(struct super_block *sb,
struct hlist_head *head, unsigned long ino)
{
struct hlist_node *node;
struct inode * inode = NULL;
struct inode *inode = NULL;
repeat:
hlist_for_each_entry(inode, node, head, i_hash) {
@ -631,10 +632,10 @@ struct inode *new_inode(struct super_block *sb)
* here to attempt to avoid that.
*/
static unsigned int last_ino;
struct inode * inode;
struct inode *inode;
spin_lock_prefetch(&inode_lock);
inode = alloc_inode(sb);
if (inode) {
spin_lock(&inode_lock);
@ -645,7 +646,6 @@ struct inode *new_inode(struct super_block *sb)
}
return inode;
}
EXPORT_SYMBOL(new_inode);
void unlock_new_inode(struct inode *inode)
@ -674,7 +674,6 @@ void unlock_new_inode(struct inode *inode)
inode->i_state &= ~(I_LOCK|I_NEW);
wake_up_inode(inode);
}
EXPORT_SYMBOL(unlock_new_inode);
/*
@ -683,13 +682,17 @@ EXPORT_SYMBOL(unlock_new_inode);
* We no longer cache the sb_flags in i_flags - see fs.h
* -- rmk@arm.uk.linux.org
*/
static struct inode * get_new_inode(struct super_block *sb, struct hlist_head *head, int (*test)(struct inode *, void *), int (*set)(struct inode *, void *), void *data)
static struct inode *get_new_inode(struct super_block *sb,
struct hlist_head *head,
int (*test)(struct inode *, void *),
int (*set)(struct inode *, void *),
void *data)
{
struct inode * inode;
struct inode *inode;
inode = alloc_inode(sb);
if (inode) {
struct inode * old;
struct inode *old;
spin_lock(&inode_lock);
/* We released the lock, so.. */
@ -731,13 +734,14 @@ set_failed:
* get_new_inode_fast is the fast path version of get_new_inode, see the
* comment at iget_locked for details.
*/
static struct inode * get_new_inode_fast(struct super_block *sb, struct hlist_head *head, unsigned long ino)
static struct inode *get_new_inode_fast(struct super_block *sb,
struct hlist_head *head, unsigned long ino)
{
struct inode * inode;
struct inode *inode;
inode = alloc_inode(sb);
if (inode) {
struct inode * old;
struct inode *old;
spin_lock(&inode_lock);
/* We released the lock, so.. */
@ -823,7 +827,6 @@ struct inode *igrab(struct inode *inode)
spin_unlock(&inode_lock);
return inode;
}
EXPORT_SYMBOL(igrab);
/**
@ -924,7 +927,6 @@ struct inode *ilookup5_nowait(struct super_block *sb, unsigned long hashval,
return ifind(sb, head, test, data, 0);
}
EXPORT_SYMBOL(ilookup5_nowait);
/**
@ -953,7 +955,6 @@ struct inode *ilookup5(struct super_block *sb, unsigned long hashval,
return ifind(sb, head, test, data, 1);
}
EXPORT_SYMBOL(ilookup5);
/**
@ -976,7 +977,6 @@ struct inode *ilookup(struct super_block *sb, unsigned long ino)
return ifind_fast(sb, head, ino);
}
EXPORT_SYMBOL(ilookup);
/**
@ -1015,7 +1015,6 @@ struct inode *iget5_locked(struct super_block *sb, unsigned long hashval,
*/
return get_new_inode(sb, head, test, set, data);
}
EXPORT_SYMBOL(iget5_locked);
/**
@ -1047,7 +1046,6 @@ struct inode *iget_locked(struct super_block *sb, unsigned long ino)
*/
return get_new_inode_fast(sb, head, ino);
}
EXPORT_SYMBOL(iget_locked);
int insert_inode_locked(struct inode *inode)
@ -1076,7 +1074,6 @@ int insert_inode_locked(struct inode *inode)
iput(old);
}
}
EXPORT_SYMBOL(insert_inode_locked);
int insert_inode_locked4(struct inode *inode, unsigned long hashval,
@ -1106,7 +1103,6 @@ int insert_inode_locked4(struct inode *inode, unsigned long hashval,
iput(old);
}
}
EXPORT_SYMBOL(insert_inode_locked4);
/**
@ -1124,7 +1120,6 @@ void __insert_inode_hash(struct inode *inode, unsigned long hashval)
hlist_add_head(&inode->i_hash, head);
spin_unlock(&inode_lock);
}
EXPORT_SYMBOL(__insert_inode_hash);
/**
@ -1139,7 +1134,6 @@ void remove_inode_hash(struct inode *inode)
hlist_del_init(&inode->i_hash);
spin_unlock(&inode_lock);
}
EXPORT_SYMBOL(remove_inode_hash);
/*
@ -1187,7 +1181,6 @@ void generic_delete_inode(struct inode *inode)
BUG_ON(inode->i_state != I_CLEAR);
destroy_inode(inode);
}
EXPORT_SYMBOL(generic_delete_inode);
static void generic_forget_inode(struct inode *inode)
@ -1237,12 +1230,11 @@ void generic_drop_inode(struct inode *inode)
else
generic_forget_inode(inode);
}
EXPORT_SYMBOL_GPL(generic_drop_inode);
/*
* Called when we're dropping the last reference
* to an inode.
* to an inode.
*
* Call the FS "drop()" function, defaulting to
* the legacy UNIX filesystem behaviour..
@ -1262,7 +1254,7 @@ static inline void iput_final(struct inode *inode)
}
/**
* iput - put an inode
* iput - put an inode
* @inode: inode to put
*
* Puts an inode, dropping its usage count. If the inode use count hits
@ -1279,7 +1271,6 @@ void iput(struct inode *inode)
iput_final(inode);
}
}
EXPORT_SYMBOL(iput);
/**
@ -1290,10 +1281,10 @@ EXPORT_SYMBOL(iput);
* Returns the block number on the device holding the inode that
* is the disk block number for the block of the file requested.
* That is, asked for block 4 of inode 1 the function will return the
* disk block relative to the disk start that holds that block of the
* disk block relative to the disk start that holds that block of the
* file.
*/
sector_t bmap(struct inode * inode, sector_t block)
sector_t bmap(struct inode *inode, sector_t block)
{
sector_t res = 0;
if (inode->i_mapping->a_ops->bmap)
@ -1425,7 +1416,6 @@ void file_update_time(struct file *file)
mark_inode_dirty_sync(inode);
mnt_drop_write(file->f_path.mnt);
}
EXPORT_SYMBOL(file_update_time);
int inode_needs_sync(struct inode *inode)
@ -1436,7 +1426,6 @@ int inode_needs_sync(struct inode *inode)
return 1;
return 0;
}
EXPORT_SYMBOL(inode_needs_sync);
int inode_wait(void *word)

3
fs/libfs.c
View file

@ -246,8 +246,7 @@ int get_sb_pseudo(struct file_system_type *fs_type, char *name,
return 0;
Enomem:
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
return -ENOMEM;
}

13
fs/namei.c
View file

@ -1130,8 +1130,8 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
* @nd: pointer to nameidata
* @open_flags: open intent flags
*/
int path_lookup_open(int dfd, const char *name, unsigned int lookup_flags,
struct nameidata *nd, int open_flags)
static int path_lookup_open(int dfd, const char *name,
unsigned int lookup_flags, struct nameidata *nd, int open_flags)
{
struct file *filp = get_empty_filp();
int err;
@ -1637,18 +1637,19 @@ static int open_will_write_to_fs(int flag, struct inode *inode)
* open_to_namei_flags() for more details.
*/
struct file *do_filp_open(int dfd, const char *pathname,
int open_flag, int mode)
int open_flag, int mode, int acc_mode)
{
struct file *filp;
struct nameidata nd;
int acc_mode, error;
int error;
struct path path;
struct dentry *dir;
int count = 0;
int will_write;
int flag = open_to_namei_flags(open_flag);
acc_mode = MAY_OPEN | ACC_MODE(flag);
if (!acc_mode)
acc_mode = MAY_OPEN | ACC_MODE(flag);
/* O_TRUNC implies we need access checks for write permissions */
if (flag & O_TRUNC)
@ -1869,7 +1870,7 @@ do_link:
*/
struct file *filp_open(const char *filename, int flags, int mode)
{
return do_filp_open(AT_FDCWD, filename, flags, mode);
return do_filp_open(AT_FDCWD, filename, flags, mode, 0);
}
EXPORT_SYMBOL(filp_open);

23
fs/namespace.c
View file

@ -695,12 +695,16 @@ static inline void mangle(struct seq_file *m, const char *s)
*/
int generic_show_options(struct seq_file *m, struct vfsmount *mnt)
{
const char *options = mnt->mnt_sb->s_options;
const char *options;
rcu_read_lock();
options = rcu_dereference(mnt->mnt_sb->s_options);
if (options != NULL && options[0]) {
seq_putc(m, ',');
mangle(m, options);
}
rcu_read_unlock();
return 0;
}
@ -721,11 +725,22 @@ EXPORT_SYMBOL(generic_show_options);
*/
void save_mount_options(struct super_block *sb, char *options)
{
kfree(sb->s_options);
sb->s_options = kstrdup(options, GFP_KERNEL);
BUG_ON(sb->s_options);
rcu_assign_pointer(sb->s_options, kstrdup(options, GFP_KERNEL));
}
EXPORT_SYMBOL(save_mount_options);
void replace_mount_options(struct super_block *sb, char *options)
{
char *old = sb->s_options;
rcu_assign_pointer(sb->s_options, options);
if (old) {
synchronize_rcu();
kfree(old);
}
}
EXPORT_SYMBOL(replace_mount_options);
#ifdef CONFIG_PROC_FS
/* iterator */
static void *m_start(struct seq_file *m, loff_t *pos)
@ -1073,9 +1088,7 @@ static int do_umount(struct vfsmount *mnt, int flags)
*/
if (flags & MNT_FORCE && sb->s_op->umount_begin) {
lock_kernel();
sb->s_op->umount_begin(sb);
unlock_kernel();
}
/*

22
fs/nfs/super.c
View file

@ -683,9 +683,12 @@ static int nfs_show_stats(struct seq_file *m, struct vfsmount *mnt)
*/
static void nfs_umount_begin(struct super_block *sb)
{
struct nfs_server *server = NFS_SB(sb);
struct nfs_server *server;
struct rpc_clnt *rpc;
lock_kernel();
server = NFS_SB(sb);
/* -EIO all pending I/O */
rpc = server->client_acl;
if (!IS_ERR(rpc))
@ -693,6 +696,8 @@ static void nfs_umount_begin(struct super_block *sb)
rpc = server->client;
if (!IS_ERR(rpc))
rpc_killall_tasks(rpc);
unlock_kernel();
}
/*
@ -2106,8 +2111,7 @@ out_err_nosb:
error_splat_root:
dput(mntroot);
error_splat_super:
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
goto out;
}
@ -2203,8 +2207,7 @@ out_err_noserver:
return error;
error_splat_super:
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
dprintk("<-- nfs_xdev_get_sb() = %d [splat]\n", error);
return error;
}
@ -2464,8 +2467,7 @@ out_free:
error_splat_root:
dput(mntroot);
error_splat_super:
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
goto out;
}
@ -2559,8 +2561,7 @@ out_err_noserver:
return error;
error_splat_super:
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
dprintk("<-- nfs4_xdev_get_sb() = %d [splat]\n", error);
return error;
}
@ -2644,8 +2645,7 @@ out_err_noserver:
return error;
error_splat_super:
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
dprintk("<-- nfs4_referral_get_sb() = %d [splat]\n", error);
return error;
}

77
fs/ocfs2/symlink.c
View file

@ -39,6 +39,7 @@
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <linux/utsname.h>
#include <linux/namei.h>
#define MLOG_MASK_PREFIX ML_NAMEI
#include <cluster/masklog.h>
@ -54,26 +55,6 @@
#include "buffer_head_io.h"
static char *ocfs2_page_getlink(struct dentry * dentry,
struct page **ppage);
static char *ocfs2_fast_symlink_getlink(struct inode *inode,
struct buffer_head **bh);
/* get the link contents into pagecache */
static char *ocfs2_page_getlink(struct dentry * dentry,
struct page **ppage)
{
struct page * page;
struct address_space *mapping = dentry->d_inode->i_mapping;
page = read_mapping_page(mapping, 0, NULL);
if (IS_ERR(page))
goto sync_fail;
*ppage = page;
return kmap(page);
sync_fail:
return (char*)page;
}
static char *ocfs2_fast_symlink_getlink(struct inode *inode,
struct buffer_head **bh)
@ -128,40 +109,55 @@ out:
return ret;
}
static void *ocfs2_follow_link(struct dentry *dentry,
struct nameidata *nd)
static void *ocfs2_fast_follow_link(struct dentry *dentry,
struct nameidata *nd)
{
int status;
char *link;
int status = 0;
int len;
char *target, *link = ERR_PTR(-ENOMEM);
struct inode *inode = dentry->d_inode;
struct page *page = NULL;
struct buffer_head *bh = NULL;
if (ocfs2_inode_is_fast_symlink(inode))
link = ocfs2_fast_symlink_getlink(inode, &bh);
else
link = ocfs2_page_getlink(dentry, &page);
if (IS_ERR(link)) {
status = PTR_ERR(link);
mlog_entry_void();
BUG_ON(!ocfs2_inode_is_fast_symlink(inode));
target = ocfs2_fast_symlink_getlink(inode, &bh);
if (IS_ERR(target)) {
status = PTR_ERR(target);
mlog_errno(status);
goto bail;
}
status = vfs_follow_link(nd, link);
/* Fast symlinks can't be large */
len = strlen(target);
link = kzalloc(len + 1, GFP_NOFS);
if (!link) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
}
memcpy(link, target, len);
nd_set_link(nd, link);
bail:
if (page) {
kunmap(page);
page_cache_release(page);
}
brelse(bh);
return ERR_PTR(status);
mlog_exit(status);
return status ? ERR_PTR(status) : link;
}
static void ocfs2_fast_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
{
char *link = cookie;
kfree(link);
}
const struct inode_operations ocfs2_symlink_inode_operations = {
.readlink = page_readlink,
.follow_link = ocfs2_follow_link,
.follow_link = page_follow_link_light,
.put_link = page_put_link,
.getattr = ocfs2_getattr,
.setattr = ocfs2_setattr,
.setxattr = generic_setxattr,
@ -171,7 +167,8 @@ const struct inode_operations ocfs2_symlink_inode_operations = {
};
const struct inode_operations ocfs2_fast_symlink_inode_operations = {
.readlink = ocfs2_readlink,
.follow_link = ocfs2_follow_link,
.follow_link = ocfs2_fast_follow_link,
.put_link = ocfs2_fast_put_link,
.getattr = ocfs2_getattr,
.setattr = ocfs2_setattr,
.setxattr = generic_setxattr,

2
fs/open.c
View file

@ -1033,7 +1033,7 @@ long do_sys_open(int dfd, const char __user *filename, int flags, int mode)
if (!IS_ERR(tmp)) {
fd = get_unused_fd_flags(flags);
if (fd >= 0) {
struct file *f = do_filp_open(dfd, tmp, flags, mode);
struct file *f = do_filp_open(dfd, tmp, flags, mode, 0);
if (IS_ERR(f)) {
put_unused_fd(fd);
fd = PTR_ERR(f);

3
fs/proc/root.c
View file

@ -67,8 +67,7 @@ static int proc_get_sb(struct file_system_type *fs_type,
sb->s_flags = flags;
err = proc_fill_super(sb);
if (err) {
up_write(&sb->s_umount);
deactivate_super(sb);
deactivate_locked_super(sb);
return err;
}

24
fs/reiserfs/dir.c
View file

@ -41,6 +41,18 @@ static int reiserfs_dir_fsync(struct file *filp, struct dentry *dentry,
#define store_ih(where,what) copy_item_head (where, what)
static inline bool is_privroot_deh(struct dentry *dir,
struct reiserfs_de_head *deh)
{
int ret = 0;
#ifdef CONFIG_REISERFS_FS_XATTR
struct dentry *privroot = REISERFS_SB(dir->d_sb)->priv_root;
ret = (dir == dir->d_parent && privroot->d_inode &&
deh->deh_objectid == INODE_PKEY(privroot->d_inode)->k_objectid);
#endif
return ret;
}
int reiserfs_readdir_dentry(struct dentry *dentry, void *dirent,
filldir_t filldir, loff_t *pos)
{
@ -138,18 +150,8 @@ int reiserfs_readdir_dentry(struct dentry *dentry, void *dirent,
}
/* Ignore the .reiserfs_priv entry */
if (reiserfs_xattrs(inode->i_sb) &&
!old_format_only(inode->i_sb) &&
dentry == inode->i_sb->s_root &&
REISERFS_SB(inode->i_sb)->priv_root &&
REISERFS_SB(inode->i_sb)->priv_root->d_inode
&& deh_objectid(deh) ==
le32_to_cpu(INODE_PKEY
(REISERFS_SB(inode->i_sb)->
priv_root->d_inode)->
k_objectid)) {
if (is_privroot_deh(dentry, deh))
continue;
}
d_off = deh_offset(deh);
*pos = d_off;

17
fs/reiserfs/namei.c
View file

@ -338,21 +338,8 @@ static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
&path_to_entry, &de);
pathrelse(&path_to_entry);
if (retval == NAME_FOUND) {
/* Hide the .reiserfs_priv directory */
if (reiserfs_xattrs(dir->i_sb) &&
!old_format_only(dir->i_sb) &&
REISERFS_SB(dir->i_sb)->priv_root &&
REISERFS_SB(dir->i_sb)->priv_root->d_inode &&
de.de_objectid ==
le32_to_cpu(INODE_PKEY
(REISERFS_SB(dir->i_sb)->priv_root->d_inode)->
k_objectid)) {
reiserfs_write_unlock(dir->i_sb);
return ERR_PTR(-EACCES);
}
inode =
reiserfs_iget(dir->i_sb, (struct cpu_key *)&(de.de_dir_id));
inode = reiserfs_iget(dir->i_sb,
(struct cpu_key *)&(de.de_dir_id));
if (!inode || IS_ERR(inode)) {
reiserfs_write_unlock(dir->i_sb);
return ERR_PTR(-EACCES);

9
fs/reiserfs/super.c
View file

@ -1316,8 +1316,7 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
}
out_ok:
kfree(s->s_options);
s->s_options = new_opts;
replace_mount_options(s, new_opts);
return 0;
out_err:
@ -1842,7 +1841,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
goto error;
}
if ((errval = reiserfs_xattr_init(s, s->s_flags))) {
if ((errval = reiserfs_lookup_privroot(s)) ||
(errval = reiserfs_xattr_init(s, s->s_flags))) {
dput(s->s_root);
s->s_root = NULL;
goto error;
@ -1855,7 +1855,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
reiserfs_info(s, "using 3.5.x disk format\n");
}
if ((errval = reiserfs_xattr_init(s, s->s_flags))) {
if ((errval = reiserfs_lookup_privroot(s)) ||
(errval = reiserfs_xattr_init(s, s->s_flags))) {
dput(s->s_root);
s->s_root = NULL;
goto error;

187
fs/reiserfs/xattr.c
View file

@ -113,41 +113,28 @@ static int xattr_rmdir(struct inode *dir, struct dentry *dentry)
#define xattr_may_create(flags) (!flags || flags & XATTR_CREATE)
/* Returns and possibly creates the xattr dir. */
static struct dentry *lookup_or_create_dir(struct dentry *parent,
const char *name, int flags)
{
struct dentry *dentry;
BUG_ON(!parent);
dentry = lookup_one_len(name, parent, strlen(name));
if (IS_ERR(dentry))
return dentry;
else if (!dentry->d_inode) {
int err = -ENODATA;
if (xattr_may_create(flags)) {
mutex_lock_nested(&parent->d_inode->i_mutex,
I_MUTEX_XATTR);
err = xattr_mkdir(parent->d_inode, dentry, 0700);
mutex_unlock(&parent->d_inode->i_mutex);
}
if (err) {
dput(dentry);
dentry = ERR_PTR(err);
}
}
return dentry;
}
static struct dentry *open_xa_root(struct super_block *sb, int flags)
{
struct dentry *privroot = REISERFS_SB(sb)->priv_root;
if (!privroot)
struct dentry *xaroot;
if (!privroot->d_inode)
return ERR_PTR(-ENODATA);
return lookup_or_create_dir(privroot, XAROOT_NAME, flags);
mutex_lock_nested(&privroot->d_inode->i_mutex, I_MUTEX_XATTR);
xaroot = dget(REISERFS_SB(sb)->xattr_root);
if (!xaroot->d_inode) {
int err = -ENODATA;
if (xattr_may_create(flags))
err = xattr_mkdir(privroot->d_inode, xaroot, 0700);
if (err) {
dput(xaroot);
xaroot = ERR_PTR(err);
}
}
mutex_unlock(&privroot->d_inode->i_mutex);
return xaroot;
}
static struct dentry *open_xa_dir(const struct inode *inode, int flags)
@ -163,10 +150,22 @@ static struct dentry *open_xa_dir(const struct inode *inode, int flags)
le32_to_cpu(INODE_PKEY(inode)->k_objectid),
inode->i_generation);
xadir = lookup_or_create_dir(xaroot, namebuf, flags);
mutex_lock_nested(&xaroot->d_inode->i_mutex, I_MUTEX_XATTR);
xadir = lookup_one_len(namebuf, xaroot, strlen(namebuf));
if (!IS_ERR(xadir) && !xadir->d_inode) {
int err = -ENODATA;
if (xattr_may_create(flags))
err = xattr_mkdir(xaroot->d_inode, xadir, 0700);
if (err) {
dput(xadir);
xadir = ERR_PTR(err);
}
}
mutex_unlock(&xaroot->d_inode->i_mutex);
dput(xaroot);
return xadir;
}
/* The following are side effects of other operations that aren't explicitly
@ -184,6 +183,7 @@ fill_with_dentries(void *buf, const char *name, int namelen, loff_t offset,
{
struct reiserfs_dentry_buf *dbuf = buf;
struct dentry *dentry;
WARN_ON_ONCE(!mutex_is_locked(&dbuf->xadir->d_inode->i_mutex));
if (dbuf->count == ARRAY_SIZE(dbuf->dentries))
return -ENOSPC;
@ -349,6 +349,7 @@ static struct dentry *xattr_lookup(struct inode *inode, const char *name,
if (IS_ERR(xadir))
return ERR_CAST(xadir);
mutex_lock_nested(&xadir->d_inode->i_mutex, I_MUTEX_XATTR);
xafile = lookup_one_len(name, xadir, strlen(name));
if (IS_ERR(xafile)) {
err = PTR_ERR(xafile);
@ -360,18 +361,15 @@ static struct dentry *xattr_lookup(struct inode *inode, const char *name,
if (!xafile->d_inode) {
err = -ENODATA;
if (xattr_may_create(flags)) {
mutex_lock_nested(&xadir->d_inode->i_mutex,
I_MUTEX_XATTR);
if (xattr_may_create(flags))
err = xattr_create(xadir->d_inode, xafile,
0700|S_IFREG);
mutex_unlock(&xadir->d_inode->i_mutex);
}
}
if (err)
dput(xafile);
out:
mutex_unlock(&xadir->d_inode->i_mutex);
dput(xadir);
if (err)
return ERR_PTR(err);
@ -435,6 +433,7 @@ static int lookup_and_delete_xattr(struct inode *inode, const char *name)
if (IS_ERR(xadir))
return PTR_ERR(xadir);
mutex_lock_nested(&xadir->d_inode->i_mutex, I_MUTEX_XATTR);
dentry = lookup_one_len(name, xadir, strlen(name));
if (IS_ERR(dentry)) {
err = PTR_ERR(dentry);
@ -442,14 +441,13 @@ static int lookup_and_delete_xattr(struct inode *inode, const char *name)
}
if (dentry->d_inode) {
mutex_lock_nested(&xadir->d_inode->i_mutex, I_MUTEX_XATTR);
err = xattr_unlink(xadir->d_inode, dentry);
mutex_unlock(&xadir->d_inode->i_mutex);
update_ctime(inode);
}
dput(dentry);
out_dput:
mutex_unlock(&xadir->d_inode->i_mutex);
dput(xadir);
return err;
}
@ -843,7 +841,7 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
if (!dentry->d_inode)
return -EINVAL;
if (!reiserfs_xattrs(dentry->d_sb) ||
if (!dentry->d_sb->s_xattr ||
get_inode_sd_version(dentry->d_inode) == STAT_DATA_V1)
return -EOPNOTSUPP;
@ -906,19 +904,22 @@ static int create_privroot(struct dentry *dentry)
{
int err;
struct inode *inode = dentry->d_parent->d_inode;
mutex_lock_nested(&inode->i_mutex, I_MUTEX_XATTR);
WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
err = xattr_mkdir(inode, dentry, 0700);
mutex_unlock(&inode->i_mutex);
if (err) {
dput(dentry);
dentry = NULL;
if (err || !dentry->d_inode) {
reiserfs_warning(dentry->d_sb, "jdm-20006",
"xattrs/ACLs enabled and couldn't "
"find/create .reiserfs_priv. "
"Failing mount.");
return -EOPNOTSUPP;
}
if (dentry && dentry->d_inode)
reiserfs_info(dentry->d_sb, "Created %s - reserved for xattr "
"storage.\n", PRIVROOT_NAME);
dentry->d_inode->i_flags |= S_PRIVATE;
reiserfs_info(dentry->d_sb, "Created %s - reserved for xattr "
"storage.\n", PRIVROOT_NAME);
return err;
return 0;
}
static int xattr_mount_check(struct super_block *s)
@ -950,11 +951,9 @@ static int
xattr_lookup_poison(struct dentry *dentry, struct qstr *q1, struct qstr *name)
{
struct dentry *priv_root = REISERFS_SB(dentry->d_sb)->priv_root;
if (name->len == priv_root->d_name.len &&
name->hash == priv_root->d_name.hash &&
!memcmp(name->name, priv_root->d_name.name, name->len)) {
if (container_of(q1, struct dentry, d_name) == priv_root)
return -ENOENT;
} else if (q1->len == name->len &&
if (q1->len == name->len &&
!memcmp(q1->name, name->name, name->len))
return 0;
return 1;
@ -964,59 +963,60 @@ static const struct dentry_operations xattr_lookup_poison_ops = {
.d_compare = xattr_lookup_poison,
};
int reiserfs_lookup_privroot(struct super_block *s)
{
struct dentry *dentry;
int err = 0;
/* If we don't have the privroot located yet - go find it */
mutex_lock(&s->s_root->d_inode->i_mutex);
dentry = lookup_one_len(PRIVROOT_NAME, s->s_root,
strlen(PRIVROOT_NAME));
if (!IS_ERR(dentry)) {
REISERFS_SB(s)->priv_root = dentry;
s->s_root->d_op = &xattr_lookup_poison_ops;
if (dentry->d_inode)
dentry->d_inode->i_flags |= S_PRIVATE;
} else
err = PTR_ERR(dentry);
mutex_unlock(&s->s_root->d_inode->i_mutex);
return err;
}
/* We need to take a copy of the mount flags since things like
* MS_RDONLY don't get set until *after* we're called.
* mount_flags != mount_options */
int reiserfs_xattr_init(struct super_block *s, int mount_flags)
{
int err = 0;
struct dentry *privroot = REISERFS_SB(s)->priv_root;
#ifdef CONFIG_REISERFS_FS_XATTR
err = xattr_mount_check(s);
if (err)
goto error;
#endif
/* If we don't have the privroot located yet - go find it */
if (!REISERFS_SB(s)->priv_root) {
struct dentry *dentry;
dentry = lookup_one_len(PRIVROOT_NAME, s->s_root,
strlen(PRIVROOT_NAME));
if (!IS_ERR(dentry)) {
#ifdef CONFIG_REISERFS_FS_XATTR
if (!(mount_flags & MS_RDONLY) && !dentry->d_inode)
err = create_privroot(dentry);
#endif
if (!dentry->d_inode) {
dput(dentry);
dentry = NULL;
}
} else
err = PTR_ERR(dentry);
if (!err && dentry) {
s->s_root->d_op = &xattr_lookup_poison_ops;
dentry->d_inode->i_flags |= S_PRIVATE;
REISERFS_SB(s)->priv_root = dentry;
#ifdef CONFIG_REISERFS_FS_XATTR
/* xattrs are unavailable */
} else if (!(mount_flags & MS_RDONLY)) {
/* If we're read-only it just means that the dir
* hasn't been created. Not an error -- just no
* xattrs on the fs. We'll check again if we
* go read-write */
reiserfs_warning(s, "jdm-20006",
"xattrs/ACLs enabled and couldn't "
"find/create .reiserfs_priv. "
"Failing mount.");
err = -EOPNOTSUPP;
#endif
}
if (!privroot->d_inode && !(mount_flags & MS_RDONLY)) {
mutex_lock(&s->s_root->d_inode->i_mutex);
err = create_privroot(REISERFS_SB(s)->priv_root);
mutex_unlock(&s->s_root->d_inode->i_mutex);
}
#ifdef CONFIG_REISERFS_FS_XATTR
if (!err)
if (privroot->d_inode) {
s->s_xattr = reiserfs_xattr_handlers;
mutex_lock(&privroot->d_inode->i_mutex);
if (!REISERFS_SB(s)->xattr_root) {
struct dentry *dentry;
dentry = lookup_one_len(XAROOT_NAME, privroot,
strlen(XAROOT_NAME));
if (!IS_ERR(dentry))
REISERFS_SB(s)->xattr_root = dentry;
else
err = PTR_ERR(dentry);
}
mutex_unlock(&privroot->d_inode->i_mutex);
}
error:
if (err) {
@ -1026,11 +1026,12 @@ error:
#endif
/* The super_block MS_POSIXACL must mirror the (no)acl mount option. */
s->s_flags = s->s_flags & ~MS_POSIXACL;
#ifdef CONFIG_REISERFS_FS_POSIX_ACL
if (reiserfs_posixacl(s))
s->s_flags |= MS_POSIXACL;
else
#endif
s->s_flags &= ~MS_POSIXACL;
return err;
}

12
fs/reiserfs/xattr_security.c
View file

@ -55,8 +55,16 @@ int reiserfs_security_init(struct inode *dir, struct inode *inode,
struct reiserfs_security_handle *sec)
{
int blocks = 0;
int error = security_inode_init_security(inode, dir, &sec->name,
&sec->value, &sec->length);
int error;
sec->name = NULL;
/* Don't add selinux attributes on xattrs - they'll never get used */
if (IS_PRIVATE(dir))
return 0;
error = security_inode_init_security(inode, dir, &sec->name,
&sec->value, &sec->length);
if (error) {
if (error == -EOPNOTSUPP)
error = 0;

3
fs/romfs/super.c
View file

@ -298,7 +298,8 @@ static struct inode *romfs_iget(struct super_block *sb, unsigned long pos)
struct romfs_inode ri;
struct inode *i;
unsigned long nlen;
unsigned nextfh, ret;
unsigned nextfh;
int ret;
umode_t mode;
/* we might have to traverse a chain of "hard link" file entries to get

48
fs/super.c
View file

@ -207,6 +207,34 @@ void deactivate_super(struct super_block *s)
EXPORT_SYMBOL(deactivate_super);
/**
* deactivate_locked_super - drop an active reference to superblock
* @s: superblock to deactivate
*
* Equivalent of up_write(&s->s_umount); deactivate_super(s);, except that
* it does not unlock it until it's all over. As the result, it's safe to
* use to dispose of new superblock on ->get_sb() failure exits - nobody
* will see the sucker until it's all over. Equivalent using up_write +
* deactivate_super is safe for that purpose only if superblock is either
* safe to use or has NULL ->s_root when we unlock.
*/
void deactivate_locked_super(struct super_block *s)
{
struct file_system_type *fs = s->s_type;
if (atomic_dec_and_lock(&s->s_active, &sb_lock)) {
s->s_count -= S_BIAS-1;
spin_unlock(&sb_lock);
vfs_dq_off(s, 0);
fs->kill_sb(s);
put_filesystem(fs);
put_super(s);
} else {
up_write(&s->s_umount);
}
}
EXPORT_SYMBOL(deactivate_locked_super);
/**
* grab_super - acquire an active reference
* @s: reference we are trying to make active
@ -797,8 +825,7 @@ int get_sb_ns(struct file_system_type *fs_type, int flags, void *data,
sb->s_flags = flags;
err = fill_super(sb, data, flags & MS_SILENT ? 1 : 0);
if (err) {
up_write(&sb->s_umount);
deactivate_super(sb);
deactivate_locked_super(sb);
return err;
}
@ -854,8 +881,7 @@ int get_sb_bdev(struct file_system_type *fs_type,
if (s->s_root) {
if ((flags ^ s->s_flags) & MS_RDONLY) {
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
error = -EBUSY;
goto error_bdev;
}
@ -870,8 +896,7 @@ int get_sb_bdev(struct file_system_type *fs_type,
sb_set_blocksize(s, block_size(bdev));
error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
goto error;
}
@ -897,7 +922,7 @@ void kill_block_super(struct super_block *sb)
struct block_device *bdev = sb->s_bdev;
fmode_t mode = sb->s_mode;
bdev->bd_super = 0;
bdev->bd_super = NULL;
generic_shutdown_super(sb);
sync_blockdev(bdev);
close_bdev_exclusive(bdev, mode);
@ -921,8 +946,7 @@ int get_sb_nodev(struct file_system_type *fs_type,
error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
return error;
}
s->s_flags |= MS_ACTIVE;
@ -952,8 +976,7 @@ int get_sb_single(struct file_system_type *fs_type,
s->s_flags = flags;
error = fill_super(s, data, flags & MS_SILENT ? 1 : 0);
if (error) {
up_write(&s->s_umount);
deactivate_super(s);
deactivate_locked_super(s);
return error;
}
s->s_flags |= MS_ACTIVE;
@ -1006,8 +1029,7 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void
return mnt;
out_sb:
dput(mnt->mnt_root);
up_write(&mnt->mnt_sb->s_umount);
deactivate_super(mnt->mnt_sb);
deactivate_locked_super(mnt->mnt_sb);
out_free_secdata:
free_secdata(secdata);
out_mnt:

3
fs/ubifs/super.c
View file

@ -2055,8 +2055,7 @@ static int ubifs_get_sb(struct file_system_type *fs_type, int flags,
return 0;
out_deact:
up_write(&sb->s_umount);
deactivate_super(sb);
deactivate_locked_super(sb);
out_close:
ubi_close_volume(ubi);
return err;

2
fs/ufs/dir.c
View file

@ -666,6 +666,6 @@ not_empty:
const struct file_operations ufs_dir_operations = {
.read = generic_read_dir,
.readdir = ufs_readdir,
.fsync = file_fsync,
.fsync = ufs_sync_file,
.llseek = generic_file_llseek,
};

2
fs/ufs/file.c
View file

@ -30,7 +30,7 @@
#include "ufs.h"
static int ufs_sync_file(struct file *file, struct dentry *dentry, int datasync)
int ufs_sync_file(struct file *file, struct dentry *dentry, int datasync)
{
struct inode *inode = dentry->d_inode;
int err;

2
fs/ufs/ufs.h
View file

@ -98,8 +98,8 @@ extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
/* file.c */
extern const struct inode_operations ufs_file_inode_operations;
extern const struct file_operations ufs_file_operations;
extern const struct address_space_operations ufs_aops;
extern int ufs_sync_file(struct file *, struct dentry *, int);
/* ialloc.c */
extern void ufs_free_inode (struct inode *inode);

2
include/linux/Kbuild
View file

@ -138,6 +138,7 @@ header-y += qnxtypes.h
header-y += radeonfb.h
header-y += raw.h
header-y += resource.h
header-y += romfs_fs.h
header-y += rose.h
header-y += serial_reg.h
header-y += smbno.h
@ -314,7 +315,6 @@ unifdef-y += irqnr.h
unifdef-y += reboot.h
unifdef-y += reiserfs_fs.h
unifdef-y += reiserfs_xattr.h
unifdef-y += romfs_fs.h
unifdef-y += route.h
unifdef-y += rtc.h
unifdef-y += rtnetlink.h

4
include/linux/fs.h
View file

@ -1775,6 +1775,7 @@ void kill_block_super(struct super_block *sb);
void kill_anon_super(struct super_block *sb);
void kill_litter_super(struct super_block *sb);
void deactivate_super(struct super_block *sb);
void deactivate_locked_super(struct super_block *sb);
int set_anon_super(struct super_block *s, void *data);
struct super_block *sget(struct file_system_type *type,
int (*test)(struct super_block *,void *),
@ -2117,7 +2118,7 @@ extern struct file *create_write_pipe(int flags);
extern void free_write_pipe(struct file *);
extern struct file *do_filp_open(int dfd, const char *pathname,
int open_flag, int mode);
int open_flag, int mode, int acc_mode);
extern int may_open(struct path *, int, int);
extern int kernel_read(struct file *, unsigned long, char *, unsigned long);
@ -2367,6 +2368,7 @@ extern void file_update_time(struct file *file);
extern int generic_show_options(struct seq_file *m, struct vfsmount *mnt);
extern void save_mount_options(struct super_block *sb, char *options);
extern void replace_mount_options(struct super_block *sb, char *options);
static inline ino_t parent_ino(struct dentry *dentry)
{

1
include/linux/namei.h
View file

@ -69,7 +69,6 @@ extern int path_lookup(const char *, unsigned, struct nameidata *);
extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
const char *, unsigned int, struct nameidata *);
extern int path_lookup_open(int dfd, const char *name, unsigned lookup_flags, struct nameidata *, int open_flags);
extern struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry *dentry,
int (*open)(struct inode *, struct file *));
extern struct file *nameidata_to_filp(struct nameidata *nd, int flags);

3
include/linux/reiserfs_fs_sb.h
View file

@ -402,7 +402,7 @@ struct reiserfs_sb_info {
int reserved_blocks; /* amount of blocks reserved for further allocations */
spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */
struct dentry *priv_root; /* root of /.reiserfs_priv */
struct dentry *xattr_root; /* root of /.reiserfs_priv/.xa */
struct dentry *xattr_root; /* root of /.reiserfs_priv/xattrs */
int j_errno;
#ifdef CONFIG_QUOTA
char *s_qf_names[MAXQUOTAS];
@ -488,7 +488,6 @@ enum reiserfs_mount_options {
#define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
#define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
#define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
#define reiserfs_xattrs(s) ((s)->s_xattr != NULL)
#define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
#define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
#define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))

3
include/linux/reiserfs_xattr.h
View file

@ -38,6 +38,7 @@ struct nameidata;
int reiserfs_xattr_register_handlers(void) __init;
void reiserfs_xattr_unregister_handlers(void);
int reiserfs_xattr_init(struct super_block *sb, int mount_flags);
int reiserfs_lookup_privroot(struct super_block *sb);
int reiserfs_delete_xattrs(struct inode *inode);
int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs);
@ -97,7 +98,7 @@ static inline size_t reiserfs_xattr_jcreate_nblocks(struct inode *inode)
if ((REISERFS_I(inode)->i_flags & i_has_xattr_dir) == 0) {
nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
if (REISERFS_SB(inode->i_sb)->xattr_root == NULL)
if (!REISERFS_SB(inode->i_sb)->xattr_root->d_inode)
nblocks += JOURNAL_BLOCKS_PER_OBJECT(inode->i_sb);
}

5
include/linux/romfs_fs.h
View file

@ -53,9 +53,4 @@ struct romfs_inode {
#define ROMFH_PAD (ROMFH_SIZE-1)
#define ROMFH_MASK (~ROMFH_PAD)
#ifdef __KERNEL__
/* Not much now */
#endif /* __KERNEL__ */
#endif

3
kernel/cgroup.c
View file

@ -1133,8 +1133,7 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
free_cg_links:
free_cg_links(&tmp_cg_links);
drop_new_super:
up_write(&sb->s_umount);
deactivate_super(sb);
deactivate_locked_super(sb);
return ret;
}

6
security/tomoyo/common.c
View file

@ -1720,14 +1720,14 @@ static bool tomoyo_policy_loader_exists(void)
* policies are not loaded yet.
* Thus, let do_execve() call this function everytime.
*/
struct nameidata nd;
struct path path;
if (path_lookup(tomoyo_loader, LOOKUP_FOLLOW, &nd)) {
if (kern_path(tomoyo_loader, LOOKUP_FOLLOW, &path)) {
printk(KERN_INFO "Not activating Mandatory Access Control now "
"since %s doesn't exist.\n", tomoyo_loader);
return false;
}
path_put(&nd.path);
path_put(&path);
return true;
}

16
security/tomoyo/realpath.c
View file

@ -165,11 +165,11 @@ char *tomoyo_realpath_from_path(struct path *path)
*/
char *tomoyo_realpath(const char *pathname)
{
struct nameidata nd;
struct path path;
if (pathname && path_lookup(pathname, LOOKUP_FOLLOW, &nd) == 0) {
char *buf = tomoyo_realpath_from_path(&nd.path);
path_put(&nd.path);
if (pathname && kern_path(pathname, LOOKUP_FOLLOW, &path) == 0) {
char *buf = tomoyo_realpath_from_path(&path);
path_put(&path);
return buf;
}
return NULL;
@ -184,11 +184,11 @@ char *tomoyo_realpath(const char *pathname)
*/
char *tomoyo_realpath_nofollow(const char *pathname)
{
struct nameidata nd;
struct path path;
if (pathname && path_lookup(pathname, 0, &nd) == 0) {
char *buf = tomoyo_realpath_from_path(&nd.path);
path_put(&nd.path);
if (pathname && kern_path(pathname, 0, &path) == 0) {
char *buf = tomoyo_realpath_from_path(&path);
path_put(&path);
return buf;
}
return NULL;