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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)
  init: Open /dev/console from rootfs
  mqueue: fix typo "failues" -> "failures"
  mqueue: only set error codes if they are really necessary
  mqueue: simplify do_open() error handling
  mqueue: apply mathematics distributivity on mq_bytes calculation
  mqueue: remove unneeded info->messages initialization
  mqueue: fix mq_open() file descriptor leak on user-space processes
  fix race in d_splice_alias()
  set S_DEAD on unlink() and non-directory rename() victims
  vfs: add NOFOLLOW flag to umount(2)
  get rid of ->mnt_parent in tomoyo/realpath
  hppfs can use existing proc_mnt, no need for do_kern_mount() in there
  Mirror MS_KERNMOUNT in ->mnt_flags
  get rid of useless vfsmount_lock use in put_mnt_ns()
  Take vfsmount_lock to fs/internal.h
  get rid of insanity with namespace roots in tomoyo
  take check for new events in namespace (guts of mounts_poll()) to namespace.c
  Don't mess with generic_permission() under ->d_lock in hpfs
  sanitize const/signedness for udf
  nilfs: sanitize const/signedness in dealing with ->d_name.name
  ...

Fix up fairly trivial (famous last words...) conflicts in
drivers/infiniband/core/uverbs_main.c and security/tomoyo/realpath.c
hifive-unleashed-5.1
Linus Torvalds 2010-03-04 08:15:33 -08:00
parent 1fae4cfb97 9643f5d94a
commit 0f2cc4ecd8
73 changed files with 794 additions and 1101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
Documentation/filesystems/sharedsubtree.txt
View File

@ -837,6 +837,9 @@ replicas continue to be exactly same.
individual lists does not affect propagation or the way propagation
tree is modified by operations.
All vfsmounts in a peer group have the same ->mnt_master. If it is
non-NULL, they form a contiguous (ordered) segment of slave list.
A example propagation tree looks as shown in the figure below.
[ NOTE: Though it looks like a forest, if we consider all the shared
mounts as a conceptual entity called 'pnode', it becomes a tree]
@ -874,8 +877,19 @@ replicas continue to be exactly same.
NOTE: The propagation tree is orthogonal to the mount tree.
8B Locking:
8B Algorithm:
->mnt_share, ->mnt_slave, ->mnt_slave_list, ->mnt_master are protected
by namespace_sem (exclusive for modifications, shared for reading).
Normally we have ->mnt_flags modifications serialized by vfsmount_lock.
There are two exceptions: do_add_mount() and clone_mnt().
The former modifies a vfsmount that has not been visible in any shared
data structures yet.
The latter holds namespace_sem and the only references to vfsmount
are in lists that can't be traversed without namespace_sem.
8C Algorithm:
The crux of the implementation resides in rbind/move operation.

42
arch/s390/hypfs/inode.c
View File

@ -288,46 +288,30 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
sb->s_magic = HYPFS_MAGIC;
sb->s_op = &hypfs_s_ops;
if (hypfs_parse_options(data, sb)) {
rc = -EINVAL;
goto err_alloc;
}
if (hypfs_parse_options(data, sb))
return -EINVAL;
root_inode = hypfs_make_inode(sb, S_IFDIR | 0755);
if (!root_inode) {
rc = -ENOMEM;
goto err_alloc;
}
if (!root_inode)
return -ENOMEM;
root_inode->i_op = &simple_dir_inode_operations;
root_inode->i_fop = &simple_dir_operations;
root_dentry = d_alloc_root(root_inode);
sb->s_root = root_dentry = d_alloc_root(root_inode);
if (!root_dentry) {
iput(root_inode);
rc = -ENOMEM;
goto err_alloc;
return -ENOMEM;
}
if (MACHINE_IS_VM)
rc = hypfs_vm_create_files(sb, root_dentry);
else
rc = hypfs_diag_create_files(sb, root_dentry);
if (rc)
goto err_tree;
return rc;
sbi->update_file = hypfs_create_update_file(sb, root_dentry);
if (IS_ERR(sbi->update_file)) {
rc = PTR_ERR(sbi->update_file);
goto err_tree;
}
if (IS_ERR(sbi->update_file))
return PTR_ERR(sbi->update_file);
hypfs_update_update(sb);
sb->s_root = root_dentry;
pr_info("Hypervisor filesystem mounted\n");
return 0;
err_tree:
hypfs_delete_tree(root_dentry);
d_genocide(root_dentry);
dput(root_dentry);
err_alloc:
kfree(sbi);
return rc;
}
static int hypfs_get_super(struct file_system_type *fst, int flags,
@ -340,12 +324,12 @@ static void hypfs_kill_super(struct super_block *sb)
{
struct hypfs_sb_info *sb_info = sb->s_fs_info;
if (sb->s_root) {
if (sb->s_root)
hypfs_delete_tree(sb->s_root);
if (sb_info->update_file)
hypfs_remove(sb_info->update_file);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
}
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
kill_litter_super(sb);
}

2
arch/um/drivers/mconsole_kern.c
View File

@ -140,7 +140,7 @@ void mconsole_proc(struct mc_request *req)
goto out;
}
err = may_open(&nd.path, MAY_READ, FMODE_READ);
err = may_open(&nd.path, MAY_READ, O_RDONLY);
if (result) {
mconsole_reply(req, "Failed to open file", 1, 0);
path_put(&nd.path);

2
drivers/infiniband/core/uverbs.h
View File

@ -146,7 +146,7 @@ extern struct idr ib_uverbs_srq_idr;
void idr_remove_uobj(struct idr *idp, struct ib_uobject *uobj);
struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file,
int is_async, int *fd);
int is_async);
struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd);
void ib_uverbs_release_ucq(struct ib_uverbs_file *file,

25
drivers/infiniband/core/uverbs_cmd.c
View File

@ -301,10 +301,15 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
resp.num_comp_vectors = file->device->num_comp_vectors;
filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd);
ret = get_unused_fd();
if (ret < 0)
goto err_free;
resp.async_fd = ret;
filp = ib_uverbs_alloc_event_file(file, 1);
if (IS_ERR(filp)) {
ret = PTR_ERR(filp);
goto err_free;
goto err_fd;
}
if (copy_to_user((void __user *) (unsigned long) cmd.response,
@ -332,9 +337,11 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
return in_len;
err_file:
put_unused_fd(resp.async_fd);
fput(filp);
err_fd:
put_unused_fd(resp.async_fd);
err_free:
ibdev->dealloc_ucontext(ucontext);
@ -715,6 +722,7 @@ ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
struct ib_uverbs_create_comp_channel cmd;
struct ib_uverbs_create_comp_channel_resp resp;
struct file *filp;
int ret;
if (out_len < sizeof resp)
return -ENOSPC;
@ -722,9 +730,16 @@ ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
if (copy_from_user(&cmd, buf, sizeof cmd))
return -EFAULT;
filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd);
if (IS_ERR(filp))
ret = get_unused_fd();
if (ret < 0)
return ret;
resp.fd = ret;
filp = ib_uverbs_alloc_event_file(file, 0);
if (IS_ERR(filp)) {
put_unused_fd(resp.fd);
return PTR_ERR(filp);
}
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) {

24
drivers/infiniband/core/uverbs_main.c
View File

@ -484,11 +484,10 @@ void ib_uverbs_event_handler(struct ib_event_handler *handler,
}
struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file,
int is_async, int *fd)
int is_async)
{
struct ib_uverbs_event_file *ev_file;
struct file *filp;
int ret;
ev_file = kmalloc(sizeof *ev_file, GFP_KERNEL);
if (!ev_file)
@ -503,27 +502,12 @@ struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file,
ev_file->is_async = is_async;
ev_file->is_closed = 0;
*fd = get_unused_fd();
if (*fd < 0) {
ret = *fd;
goto err;
}
filp = anon_inode_getfile("[uverbs-event]", &uverbs_event_fops,
filp = anon_inode_getfile("[infinibandevent]", &uverbs_event_fops,
ev_file, O_RDONLY);
if (!filp) {
ret = -ENFILE;
goto err_fd;
}
if (IS_ERR(filp))
kfree(ev_file);
return filp;
err_fd:
put_unused_fd(*fd);
err:
kfree(ev_file);
return ERR_PTR(ret);
}
/*

2
drivers/usb/gadget/f_mass_storage.c
View File

@ -1050,7 +1050,7 @@ static void invalidate_sub(struct fsg_lun *curlun)
unsigned long rc;
rc = invalidate_mapping_pages(inode->i_mapping, 0, -1);
VLDBG(curlun, "invalidate_inode_pages -> %ld\n", rc);
VLDBG(curlun, "invalidate_mapping_pages -> %ld\n", rc);
}
static int do_verify(struct fsg_common *common)

2
drivers/usb/gadget/file_storage.c
View File

@ -1448,7 +1448,7 @@ static void invalidate_sub(struct fsg_lun *curlun)
unsigned long rc;
rc = invalidate_mapping_pages(inode->i_mapping, 0, -1);
VLDBG(curlun, "invalidate_inode_pages -> %ld\n", rc);
VLDBG(curlun, "invalidate_mapping_pages -> %ld\n", rc);
}
static int do_verify(struct fsg_dev *fsg)

7
fs/autofs4/autofs_i.h
View File

@ -60,11 +60,6 @@ do { \
current->pid, __func__, ##args); \
} while (0)
struct rehash_entry {
struct task_struct *task;
struct list_head list;
};
/* Unified info structure. This is pointed to by both the dentry and
inode structures. Each file in the filesystem has an instance of this
structure. It holds a reference to the dentry, so dentries are never
@ -81,7 +76,6 @@ struct autofs_info {
struct list_head active;
int active_count;
struct list_head rehash_list;
struct list_head expiring;
@ -104,7 +98,6 @@ struct autofs_info {
#define AUTOFS_INF_EXPIRING (1<<0) /* dentry is in the process of expiring */
#define AUTOFS_INF_MOUNTPOINT (1<<1) /* mountpoint status for direct expire */
#define AUTOFS_INF_PENDING (1<<2) /* dentry pending mount */
#define AUTOFS_INF_REHASH (1<<3) /* dentry in transit to ->lookup() */
struct autofs_wait_queue {
wait_queue_head_t queue;

11
fs/autofs4/dev-ioctl.c
View File

@ -544,10 +544,9 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
goto out;
devid = new_encode_dev(path.mnt->mnt_sb->s_dev);
err = 0;
if (path.dentry->d_inode &&
path.mnt->mnt_root == path.dentry) {
if (path.mnt->mnt_root == path.dentry) {
err = 1;
magic = path.dentry->d_inode->i_sb->s_magic;
magic = path.mnt->mnt_sb->s_magic;
}
} else {
dev_t dev = sbi->sb->s_dev;
@ -560,10 +559,8 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
err = have_submounts(path.dentry);
if (path.mnt->mnt_mountpoint != path.mnt->mnt_root) {
if (follow_down(&path))
magic = path.mnt->mnt_sb->s_magic;
}
if (follow_down(&path))
magic = path.mnt->mnt_sb->s_magic;
}
param->ismountpoint.out.devid = devid;

6
fs/autofs4/expire.c
View File

@ -279,7 +279,6 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
root->d_mounted--;
}
ino->flags |= AUTOFS_INF_EXPIRING;
autofs4_add_expiring(root);
init_completion(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
return root;
@ -407,7 +406,6 @@ found:
expired, (int)expired->d_name.len, expired->d_name.name);
ino = autofs4_dentry_ino(expired);
ino->flags |= AUTOFS_INF_EXPIRING;
autofs4_add_expiring(expired);
init_completion(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
spin_lock(&dcache_lock);
@ -435,7 +433,7 @@ int autofs4_expire_wait(struct dentry *dentry)
DPRINTK("expire done status=%d", status);
if (d_unhashed(dentry) && IS_DEADDIR(dentry->d_inode))
if (d_unhashed(dentry))
return -EAGAIN;
return status;
@ -475,7 +473,6 @@ int autofs4_expire_run(struct super_block *sb,
spin_lock(&sbi->fs_lock);
ino = autofs4_dentry_ino(dentry);
ino->flags &= ~AUTOFS_INF_EXPIRING;
autofs4_del_expiring(dentry);
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
@ -506,7 +503,6 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
ino->flags &= ~AUTOFS_INF_MOUNTPOINT;
}
ino->flags &= ~AUTOFS_INF_EXPIRING;
autofs4_del_expiring(dentry);
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
dput(dentry);

63
fs/autofs4/inode.c
View File

@ -49,7 +49,6 @@ struct autofs_info *autofs4_init_ino(struct autofs_info *ino,
ino->dentry = NULL;
ino->size = 0;
INIT_LIST_HEAD(&ino->active);
INIT_LIST_HEAD(&ino->rehash_list);
ino->active_count = 0;
INIT_LIST_HEAD(&ino->expiring);
atomic_set(&ino->count, 0);
@ -97,63 +96,6 @@ void autofs4_free_ino(struct autofs_info *ino)
kfree(ino);
}
/*
* Deal with the infamous "Busy inodes after umount ..." message.
*
* Clean up the dentry tree. This happens with autofs if the user
* space program goes away due to a SIGKILL, SIGSEGV etc.
*/
static void autofs4_force_release(struct autofs_sb_info *sbi)
{
struct dentry *this_parent = sbi->sb->s_root;
struct list_head *next;
if (!sbi->sb->s_root)
return;
spin_lock(&dcache_lock);
repeat:
next = this_parent->d_subdirs.next;
resume:
while (next != &this_parent->d_subdirs) {
struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
/* Negative dentry - don`t care */
if (!simple_positive(dentry)) {
next = next->next;
continue;
}
if (!list_empty(&dentry->d_subdirs)) {
this_parent = dentry;
goto repeat;
}
next = next->next;
spin_unlock(&dcache_lock);
DPRINTK("dentry %p %.*s",
dentry, (int)dentry->d_name.len, dentry->d_name.name);
dput(dentry);
spin_lock(&dcache_lock);
}
if (this_parent != sbi->sb->s_root) {
struct dentry *dentry = this_parent;
next = this_parent->d_u.d_child.next;
this_parent = this_parent->d_parent;
spin_unlock(&dcache_lock);
DPRINTK("parent dentry %p %.*s",
dentry, (int)dentry->d_name.len, dentry->d_name.name);
dput(dentry);
spin_lock(&dcache_lock);
goto resume;
}
spin_unlock(&dcache_lock);
}
void autofs4_kill_sb(struct super_block *sb)
{
struct autofs_sb_info *sbi = autofs4_sbi(sb);
@ -170,15 +112,12 @@ void autofs4_kill_sb(struct super_block *sb)
/* Free wait queues, close pipe */
autofs4_catatonic_mode(sbi);
/* Clean up and release dangling references */
autofs4_force_release(sbi);
sb->s_fs_info = NULL;
kfree(sbi);
out_kill_sb:
DPRINTK("shutting down");
kill_anon_super(sb);
kill_litter_super(sb);
}
static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt)

474
fs/autofs4/root.c
View File

@ -104,99 +104,6 @@ static void autofs4_del_active(struct dentry *dentry)
return;
}
static void autofs4_add_rehash_entry(struct autofs_info *ino,
struct rehash_entry *entry)
{
entry->task = current;
INIT_LIST_HEAD(&entry->list);
list_add(&entry->list, &ino->rehash_list);
return;
}
static void autofs4_remove_rehash_entry(struct autofs_info *ino)
{
struct list_head *head = &ino->rehash_list;
struct rehash_entry *entry;
list_for_each_entry(entry, head, list) {
if (entry->task == current) {
list_del(&entry->list);
kfree(entry);
break;
}
}
return;
}
static void autofs4_remove_rehash_entrys(struct autofs_info *ino)
{
struct autofs_sb_info *sbi = ino->sbi;
struct rehash_entry *entry, *next;
struct list_head *head;
spin_lock(&sbi->fs_lock);
spin_lock(&sbi->lookup_lock);
if (!(ino->flags & AUTOFS_INF_REHASH)) {
spin_unlock(&sbi->lookup_lock);
spin_unlock(&sbi->fs_lock);
return;
}
ino->flags &= ~AUTOFS_INF_REHASH;
head = &ino->rehash_list;
list_for_each_entry_safe(entry, next, head, list) {
list_del(&entry->list);
kfree(entry);
}
spin_unlock(&sbi->lookup_lock);
spin_unlock(&sbi->fs_lock);
dput(ino->dentry);
return;
}
static void autofs4_revalidate_drop(struct dentry *dentry,
struct rehash_entry *entry)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
/*
* Add to the active list so we can pick this up in
* ->lookup(). Also add an entry to a rehash list so
* we know when there are no dentrys in flight so we
* know when we can rehash the dentry.
*/
spin_lock(&sbi->lookup_lock);
if (list_empty(&ino->active))
list_add(&ino->active, &sbi->active_list);
autofs4_add_rehash_entry(ino, entry);
spin_unlock(&sbi->lookup_lock);
if (!(ino->flags & AUTOFS_INF_REHASH)) {
ino->flags |= AUTOFS_INF_REHASH;
dget(dentry);
spin_lock(&dentry->d_lock);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
}
return;
}
static void autofs4_revalidate_rehash(struct dentry *dentry)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
if (ino->flags & AUTOFS_INF_REHASH) {
spin_lock(&sbi->lookup_lock);
autofs4_remove_rehash_entry(ino);
if (list_empty(&ino->rehash_list)) {
spin_unlock(&sbi->lookup_lock);
ino->flags &= ~AUTOFS_INF_REHASH;
d_rehash(dentry);
dput(ino->dentry);
} else
spin_unlock(&sbi->lookup_lock);
}
return;
}
static unsigned int autofs4_need_mount(unsigned int flags)
{
unsigned int res = 0;
@ -236,7 +143,7 @@ out:
return dcache_dir_open(inode, file);
}
static int try_to_fill_dentry(struct dentry *dentry)
static int try_to_fill_dentry(struct dentry *dentry, int flags)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
@ -249,17 +156,55 @@ static int try_to_fill_dentry(struct dentry *dentry)
* Wait for a pending mount, triggering one if there
* isn't one already
*/
DPRINTK("waiting for mount name=%.*s",
dentry->d_name.len, dentry->d_name.name);
if (dentry->d_inode == NULL) {
DPRINTK("waiting for mount name=%.*s",
dentry->d_name.len, dentry->d_name.name);
status = autofs4_wait(sbi, dentry, NFY_MOUNT);
status = autofs4_wait(sbi, dentry, NFY_MOUNT);
DPRINTK("mount done status=%d", status);
DPRINTK("mount done status=%d", status);
/* Update expiry counter */
ino->last_used = jiffies;
/* Turn this into a real negative dentry? */
if (status == -ENOENT) {
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
return status;
} else if (status) {
/* Return a negative dentry, but leave it "pending" */
return status;
}
/* Trigger mount for path component or follow link */
} else if (ino->flags & AUTOFS_INF_PENDING ||
autofs4_need_mount(flags) ||
current->link_count) {
DPRINTK("waiting for mount name=%.*s",
dentry->d_name.len, dentry->d_name.name);
return status;
spin_lock(&sbi->fs_lock);
ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
status = autofs4_wait(sbi, dentry, NFY_MOUNT);
DPRINTK("mount done status=%d", status);
if (status) {
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
return status;
}
}
/* Initialize expiry counter after successful mount */
if (ino)
ino->last_used = jiffies;
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
return 0;
}
/* For autofs direct mounts the follow link triggers the mount */
@ -313,16 +258,10 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
*/
if (ino->flags & AUTOFS_INF_PENDING ||
(!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs))) {
ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&dcache_lock);
spin_unlock(&sbi->fs_lock);
status = try_to_fill_dentry(dentry);
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
status = try_to_fill_dentry(dentry, 0);
if (status)
goto out_error;
@ -361,47 +300,18 @@ static int autofs4_revalidate(struct dentry *dentry, struct nameidata *nd)
{
struct inode *dir = dentry->d_parent->d_inode;
struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
struct rehash_entry *entry;
int oz_mode = autofs4_oz_mode(sbi);
int flags = nd ? nd->flags : 0;
unsigned int mutex_aquired;
int status = 1;
DPRINTK("name = %.*s oz_mode = %d",
dentry->d_name.len, dentry->d_name.name, oz_mode);
/* Daemon never causes a mount to trigger */
if (autofs4_oz_mode(sbi))
return 1;
entry = kmalloc(sizeof(struct rehash_entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
mutex_aquired = mutex_trylock(&dir->i_mutex);
spin_lock(&sbi->fs_lock);
spin_lock(&dcache_lock);
/* Pending dentry */
spin_lock(&sbi->fs_lock);
if (autofs4_ispending(dentry)) {
int status;
/*
* We can only unhash and send this to ->lookup() if
* the directory mutex is held over d_revalidate() and
* ->lookup(). This prevents the VFS from incorrectly
* seeing the dentry as non-existent.
*/
ino->flags |= AUTOFS_INF_PENDING;
if (!mutex_aquired) {
autofs4_revalidate_drop(dentry, entry);
spin_unlock(&dcache_lock);
spin_unlock(&sbi->fs_lock);
return 0;
}
spin_unlock(&dcache_lock);
/* The daemon never causes a mount to trigger */
spin_unlock(&sbi->fs_lock);
mutex_unlock(&dir->i_mutex);
kfree(entry);
if (oz_mode)
return 1;
/*
* If the directory has gone away due to an expire
@ -415,82 +325,45 @@ static int autofs4_revalidate(struct dentry *dentry, struct nameidata *nd)
* A zero status is success otherwise we have a
* negative error code.
*/
status = try_to_fill_dentry(dentry);
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
status = try_to_fill_dentry(dentry, flags);
if (status == 0)
return 1;
return status;
}
spin_unlock(&sbi->fs_lock);
/* Negative dentry.. invalidate if "old" */
if (dentry->d_inode == NULL)
return 0;
/* Check for a non-mountpoint directory with no contents */
spin_lock(&dcache_lock);
if (S_ISDIR(dentry->d_inode->i_mode) &&
!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
DPRINTK("dentry=%p %.*s, emptydir",
dentry, dentry->d_name.len, dentry->d_name.name);
spin_unlock(&dcache_lock);
if (autofs4_need_mount(flags) || current->link_count) {
int status;
/* The daemon never causes a mount to trigger */
if (oz_mode)
return 1;
/*
* We can only unhash and send this to ->lookup() if
* the directory mutex is held over d_revalidate() and
* ->lookup(). This prevents the VFS from incorrectly
* seeing the dentry as non-existent.
*/
ino->flags |= AUTOFS_INF_PENDING;
if (!mutex_aquired) {
autofs4_revalidate_drop(dentry, entry);
spin_unlock(&dcache_lock);
spin_unlock(&sbi->fs_lock);
return 0;
}
spin_unlock(&dcache_lock);
spin_unlock(&sbi->fs_lock);
mutex_unlock(&dir->i_mutex);
kfree(entry);
/*
* A zero status is success otherwise we have a
* negative error code.
*/
status = try_to_fill_dentry(dentry, flags);
if (status == 0)
return 1;
/*
* A zero status is success otherwise we have a
* negative error code.
*/
status = try_to_fill_dentry(dentry);
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
if (status == 0)
return 1;
return status;
}
return status;
}
spin_unlock(&dcache_lock);
spin_unlock(&sbi->fs_lock);
if (mutex_aquired)
mutex_unlock(&dir->i_mutex);
kfree(entry);
return 1;
}
static void autofs4_free_rehash_entrys(struct autofs_info *inf)
{
struct list_head *head = &inf->rehash_list;
struct rehash_entry *entry, *next;
list_for_each_entry_safe(entry, next, head, list) {
list_del(&entry->list);
kfree(entry);
}
}
void autofs4_dentry_release(struct dentry *de)
{
struct autofs_info *inf;
@ -509,8 +382,6 @@ void autofs4_dentry_release(struct dentry *de)
list_del(&inf->active);
if (!list_empty(&inf->expiring))
list_del(&inf->expiring);
if (!list_empty(&inf->rehash_list))
autofs4_free_rehash_entrys(inf);
spin_unlock(&sbi->lookup_lock);
}
@ -543,7 +414,6 @@ static struct dentry *autofs4_lookup_active(struct dentry *dentry)
const unsigned char *str = name->name;
struct list_head *p, *head;
restart:
spin_lock(&dcache_lock);
spin_lock(&sbi->lookup_lock);
head = &sbi->active_list;
@ -561,19 +431,6 @@ restart:
if (atomic_read(&active->d_count) == 0)
goto next;
if (active->d_inode && IS_DEADDIR(active->d_inode)) {
if (!list_empty(&ino->rehash_list)) {
dget(active);
spin_unlock(&active->d_lock);
spin_unlock(&sbi->lookup_lock);
spin_unlock(&dcache_lock);
autofs4_remove_rehash_entrys(ino);
dput(active);
goto restart;
}
goto next;
}
qstr = &active->d_name;
if (active->d_name.hash != hash)
@ -586,11 +443,13 @@ restart:
if (memcmp(qstr->name, str, len))
goto next;
dget(active);
spin_unlock(&active->d_lock);
spin_unlock(&sbi->lookup_lock);
spin_unlock(&dcache_lock);
return active;
if (d_unhashed(active)) {
dget(active);
spin_unlock(&active->d_lock);
spin_unlock(&sbi->lookup_lock);
spin_unlock(&dcache_lock);
return active;
}
next:
spin_unlock(&active->d_lock);
}
@ -639,11 +498,13 @@ static struct dentry *autofs4_lookup_expiring(struct dentry *dentry)
if (memcmp(qstr->name, str, len))
goto next;
dget(expiring);
spin_unlock(&expiring->d_lock);
spin_unlock(&sbi->lookup_lock);
spin_unlock(&dcache_lock);
return expiring;
if (d_unhashed(expiring)) {
dget(expiring);
spin_unlock(&expiring->d_lock);
spin_unlock(&sbi->lookup_lock);
spin_unlock(&dcache_lock);
return expiring;
}
next:
spin_unlock(&expiring->d_lock);
}
@ -653,48 +514,6 @@ next:
return NULL;
}
static struct autofs_info *init_new_dentry(struct autofs_sb_info *sbi,
struct dentry *dentry, int oz_mode)
{
struct autofs_info *ino;
/*
* Mark the dentry incomplete but don't hash it. We do this
* to serialize our inode creation operations (symlink and
* mkdir) which prevents deadlock during the callback to
* the daemon. Subsequent user space lookups for the same
* dentry are placed on the wait queue while the daemon
* itself is allowed passage unresticted so the create
* operation itself can then hash the dentry. Finally,
* we check for the hashed dentry and return the newly
* hashed dentry.
*/
dentry->d_op = &autofs4_root_dentry_operations;
/*
* And we need to ensure that the same dentry is used for
* all following lookup calls until it is hashed so that
* the dentry flags are persistent throughout the request.
*/
ino = autofs4_init_ino(NULL, sbi, 0555);
if (!ino)
return ERR_PTR(-ENOMEM);
dentry->d_fsdata = ino;
ino->dentry = dentry;
/*
* Only set the mount pending flag for new dentrys not created
* by the daemon.
*/
if (!oz_mode)
ino->flags |= AUTOFS_INF_PENDING;
d_instantiate(dentry, NULL);
return ino;
}
/* Lookups in the root directory */
static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
@ -702,7 +521,6 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
struct autofs_info *ino;
struct dentry *expiring, *active;
int oz_mode;
int status = 0;
DPRINTK("name = %.*s",
dentry->d_name.len, dentry->d_name.name);
@ -717,26 +535,44 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
DPRINTK("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d",
current->pid, task_pgrp_nr(current), sbi->catatonic, oz_mode);
spin_lock(&sbi->fs_lock);
active = autofs4_lookup_active(dentry);
if (active) {
dentry = active;
ino = autofs4_dentry_ino(dentry);
/* If this came from revalidate, rehash it */
autofs4_revalidate_rehash(dentry);
spin_unlock(&sbi->fs_lock);
} else {
spin_unlock(&sbi->fs_lock);
ino = init_new_dentry(sbi, dentry, oz_mode);
if (IS_ERR(ino))
return (struct dentry *) ino;
/*
* Mark the dentry incomplete but don't hash it. We do this
* to serialize our inode creation operations (symlink and
* mkdir) which prevents deadlock during the callback to
* the daemon. Subsequent user space lookups for the same
* dentry are placed on the wait queue while the daemon
* itself is allowed passage unresticted so the create
* operation itself can then hash the dentry. Finally,
* we check for the hashed dentry and return the newly
* hashed dentry.
*/
dentry->d_op = &autofs4_root_dentry_operations;
/*
* And we need to ensure that the same dentry is used for
* all following lookup calls until it is hashed so that
* the dentry flags are persistent throughout the request.
*/
ino = autofs4_init_ino(NULL, sbi, 0555);
if (!ino)
return ERR_PTR(-ENOMEM);
dentry->d_fsdata = ino;
ino->dentry = dentry;
autofs4_add_active(dentry);
d_instantiate(dentry, NULL);
}
autofs4_add_active(dentry);
if (!oz_mode) {
expiring = autofs4_lookup_expiring(dentry);
mutex_unlock(&dir->i_mutex);
expiring = autofs4_lookup_expiring(dentry);
if (expiring) {
/*
* If we are racing with expire the request might not
@ -744,22 +580,23 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
* so it must have been successful, so just wait for it.
*/
autofs4_expire_wait(expiring);
autofs4_del_expiring(expiring);
dput(expiring);
}
status = try_to_fill_dentry(dentry);
mutex_lock(&dir->i_mutex);
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
if (dentry->d_op && dentry->d_op->d_revalidate)
(dentry->d_op->d_revalidate)(dentry, nd);
mutex_lock(&dir->i_mutex);
}
autofs4_del_active(dentry);
/*
* If we had a mount fail, check if we had to handle
* If we are still pending, check if we had to handle
* a signal. If so we can force a restart..
*/
if (status) {
if (ino->flags & AUTOFS_INF_PENDING) {
/* See if we were interrupted */
if (signal_pending(current)) {
sigset_t *sigset = &current->pending.signal;
@ -771,46 +608,43 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
return ERR_PTR(-ERESTARTNOINTR);
}
}
}
/*
* User space can (and has done in the past) remove and re-create
* this directory during the callback. This can leave us with an
* unhashed dentry, but a successful mount! So we need to
* perform another cached lookup in case the dentry now exists.
*/
if (!oz_mode && !have_submounts(dentry)) {
struct dentry *new;
new = d_lookup(dentry->d_parent, &dentry->d_name);
if (new) {
if (active)
dput(active);
return new;
} else {
if (!status)
status = -ENOENT;
if (!oz_mode) {
spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
}
}
/*
* If we had a mount failure, return status to user space.
* If the mount succeeded and we used a dentry from the active queue
* return it.
* If this dentry is unhashed, then we shouldn't honour this
* lookup. Returning ENOENT here doesn't do the right thing
* for all system calls, but it should be OK for the operations
* we permit from an autofs.
*/
if (status) {
dentry = ERR_PTR(status);
if (!oz_mode && d_unhashed(dentry)) {
/*
* A user space application can (and has done in the past)
* remove and re-create this directory during the callback.
* This can leave us with an unhashed dentry, but a
* successful mount! So we need to perform another
* cached lookup in case the dentry now exists.
*/
struct dentry *parent = dentry->d_parent;
struct dentry *new = d_lookup(parent, &dentry->d_name);
if (new != NULL)
dentry = new;
else
dentry = ERR_PTR(-ENOENT);
if (active)
dput(active);
return dentry;
} else {
/*
* Valid successful mount, return active dentry or NULL
* for a new dentry.
*/
if (active)
return active;
}
if (active)
return active;
return NULL;
}
@ -834,6 +668,8 @@ static int autofs4_dir_symlink(struct inode *dir,
if (!ino)
return -ENOMEM;
autofs4_del_active(dentry);
ino->size = strlen(symname);
cp = kmalloc(ino->size + 1, GFP_KERNEL);
if (!cp) {
@ -910,6 +746,7 @@ static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry)
dir->i_mtime = CURRENT_TIME;
spin_lock(&dcache_lock);
autofs4_add_expiring(dentry);
spin_lock(&dentry->d_lock);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
@ -935,6 +772,7 @@ static int autofs4_dir_rmdir(struct inode *dir, struct dentry *dentry)
spin_unlock(&dcache_lock);
return -ENOTEMPTY;
}
autofs4_add_expiring(dentry);
spin_lock(&dentry->d_lock);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
@ -972,6 +810,8 @@ static int autofs4_dir_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (!ino)
return -ENOMEM;
autofs4_del_active(dentry);
inode = autofs4_get_inode(dir->i_sb, ino);
if (!inode) {
if (!dentry->d_fsdata)

4
fs/cifs/file.c
View File

@ -2289,9 +2289,9 @@ cifs_oplock_break(struct slow_work *work)
if (inode && S_ISREG(inode->i_mode)) {
#ifdef CONFIG_CIFS_EXPERIMENTAL
if (cinode->clientCanCacheAll == 0)
break_lease(inode, FMODE_READ);
break_lease(inode, O_RDONLY);
else if (cinode->clientCanCacheRead == 0)
break_lease(inode, FMODE_WRITE);
break_lease(inode, O_WRONLY);
#endif
rc = filemap_fdatawrite(inode->i_mapping);
if (cinode->clientCanCacheRead == 0) {

70
fs/dcache.c
View File

@ -257,6 +257,7 @@ kill_it:
if (dentry)
goto repeat;
}
EXPORT_SYMBOL(dput);
/**
* d_invalidate - invalidate a dentry
@ -314,6 +315,7 @@ int d_invalidate(struct dentry * dentry)
spin_unlock(&dcache_lock);
return 0;
}
EXPORT_SYMBOL(d_invalidate);
/* This should be called _only_ with dcache_lock held */
@ -328,6 +330,7 @@ struct dentry * dget_locked(struct dentry *dentry)
{
return __dget_locked(dentry);
}
EXPORT_SYMBOL(dget_locked);
/**
* d_find_alias - grab a hashed alias of inode
@ -384,6 +387,7 @@ struct dentry * d_find_alias(struct inode *inode)
}
return de;
}
EXPORT_SYMBOL(d_find_alias);
/*
* Try to kill dentries associated with this inode.
@ -408,6 +412,7 @@ restart:
}
spin_unlock(&dcache_lock);
}
EXPORT_SYMBOL(d_prune_aliases);
/*
* Throw away a dentry - free the inode, dput the parent. This requires that
@ -610,6 +615,7 @@ void shrink_dcache_sb(struct super_block * sb)
{
__shrink_dcache_sb(sb, NULL, 0);
}
EXPORT_SYMBOL(shrink_dcache_sb);
/*
* destroy a single subtree of dentries for unmount
@ -792,6 +798,7 @@ positive:
spin_unlock(&dcache_lock);
return 1;
}
EXPORT_SYMBOL(have_submounts);
/*
* Search the dentry child list for the specified parent,
@ -876,6 +883,7 @@ void shrink_dcache_parent(struct dentry * parent)
while ((found = select_parent(parent)) != 0)
__shrink_dcache_sb(sb, &found, 0);
}
EXPORT_SYMBOL(shrink_dcache_parent);
/*
* Scan `nr' dentries and return the number which remain.
@ -968,6 +976,7 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name)
return dentry;
}
EXPORT_SYMBOL(d_alloc);
struct dentry *d_alloc_name(struct dentry *parent, const char *name)
{
@ -1012,6 +1021,7 @@ void d_instantiate(struct dentry *entry, struct inode * inode)
spin_unlock(&dcache_lock);
security_d_instantiate(entry, inode);
}
EXPORT_SYMBOL(d_instantiate);
/**
* d_instantiate_unique - instantiate a non-aliased dentry
@ -1108,6 +1118,7 @@ struct dentry * d_alloc_root(struct inode * root_inode)
}
return res;
}
EXPORT_SYMBOL(d_alloc_root);
static inline struct hlist_head *d_hash(struct dentry *parent,
unsigned long hash)
@ -1211,7 +1222,6 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
BUG_ON(!(new->d_flags & DCACHE_DISCONNECTED));
spin_unlock(&dcache_lock);
security_d_instantiate(new, inode);
d_rehash(dentry);
d_move(new, dentry);
iput(inode);
} else {
@ -1225,6 +1235,7 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
d_add(dentry, inode);
return new;
}
EXPORT_SYMBOL(d_splice_alias);
/**
* d_add_ci - lookup or allocate new dentry with case-exact name
@ -1314,6 +1325,7 @@ err_out:
iput(inode);
return ERR_PTR(error);
}
EXPORT_SYMBOL(d_add_ci);
/**
* d_lookup - search for a dentry
@ -1357,6 +1369,7 @@ struct dentry * d_lookup(struct dentry * parent, struct qstr * name)
} while (read_seqretry(&rename_lock, seq));
return dentry;
}
EXPORT_SYMBOL(d_lookup);
struct dentry * __d_lookup(struct dentry * parent, struct qstr * name)
{
@ -1483,6 +1496,7 @@ int d_validate(struct dentry *dentry, struct dentry *dparent)
out:
return 0;
}
EXPORT_SYMBOL(d_validate);
/*
* When a file is deleted, we have two options:
@ -1528,6 +1542,7 @@ void d_delete(struct dentry * dentry)
fsnotify_nameremove(dentry, isdir);
}
EXPORT_SYMBOL(d_delete);
static void __d_rehash(struct dentry * entry, struct hlist_head *list)
{
@ -1556,6 +1571,7 @@ void d_rehash(struct dentry * entry)
spin_unlock(&entry->d_lock);
spin_unlock(&dcache_lock);
}
EXPORT_SYMBOL(d_rehash);
/*
* When switching names, the actual string doesn't strictly have to
@ -1702,6 +1718,7 @@ void d_move(struct dentry * dentry, struct dentry * target)
d_move_locked(dentry, target);
spin_unlock(&dcache_lock);
}
EXPORT_SYMBOL(d_move);
/**
* d_ancestor - search for an ancestor
@ -1868,6 +1885,7 @@ shouldnt_be_hashed:
spin_unlock(&dcache_lock);
BUG();
}
EXPORT_SYMBOL_GPL(d_materialise_unique);
static int prepend(char **buffer, int *buflen, const char *str, int namelen)
{
@ -2005,6 +2023,7 @@ char *d_path(const struct path *path, char *buf, int buflen)
path_put(&root);
return res;
}
EXPORT_SYMBOL(d_path);
/*
* Helper function for dentry_operations.d_dname() members
@ -2171,6 +2190,30 @@ int is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
return result;
}
int path_is_under(struct path *path1, struct path *path2)
{
struct vfsmount *mnt = path1->mnt;
struct dentry *dentry = path1->dentry;
int res;
spin_lock(&vfsmount_lock);
if (mnt != path2->mnt) {
for (;;) {
if (mnt->mnt_parent == mnt) {
spin_unlock(&vfsmount_lock);
return 0;
}
if (mnt->mnt_parent == path2->mnt)
break;
mnt = mnt->mnt_parent;
}
dentry = mnt->mnt_mountpoint;
}
res = is_subdir(dentry, path2->dentry);
spin_unlock(&vfsmount_lock);
return res;
}
EXPORT_SYMBOL(path_is_under);
void d_genocide(struct dentry *root)
{
struct dentry *this_parent = root;
@ -2228,6 +2271,7 @@ ino_t find_inode_number(struct dentry *dir, struct qstr *name)
}
return ino;
}
EXPORT_SYMBOL(find_inode_number);
static __initdata unsigned long dhash_entries;
static int __init set_dhash_entries(char *str)
@ -2297,6 +2341,7 @@ static void __init dcache_init(void)
/* SLAB cache for __getname() consumers */
struct kmem_cache *names_cachep __read_mostly;
EXPORT_SYMBOL(names_cachep);
EXPORT_SYMBOL(d_genocide);
@ -2326,26 +2371,3 @@ void __init vfs_caches_init(unsigned long mempages)
bdev_cache_init();
chrdev_init();
}
EXPORT_SYMBOL(d_alloc);
EXPORT_SYMBOL(d_alloc_root);
EXPORT_SYMBOL(d_delete);
EXPORT_SYMBOL(d_find_alias);
EXPORT_SYMBOL(d_instantiate);
EXPORT_SYMBOL(d_invalidate);
EXPORT_SYMBOL(d_lookup);
EXPORT_SYMBOL(d_move);
EXPORT_SYMBOL_GPL(d_materialise_unique);
EXPORT_SYMBOL(d_path);
EXPORT_SYMBOL(d_prune_aliases);
EXPORT_SYMBOL(d_rehash);
EXPORT_SYMBOL(d_splice_alias);
EXPORT_SYMBOL(d_add_ci);
EXPORT_SYMBOL(d_validate);
EXPORT_SYMBOL(dget_locked);
EXPORT_SYMBOL(dput);
EXPORT_SYMBOL(find_inode_number);
EXPORT_SYMBOL(have_submounts);
EXPORT_SYMBOL(names_cachep);
EXPORT_SYMBOL(shrink_dcache_parent);
EXPORT_SYMBOL(shrink_dcache_sb);

2
fs/debugfs/inode.c
View File

@ -496,7 +496,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
}
d_move(old_dentry, dentry);
fsnotify_move(old_dir->d_inode, new_dir->d_inode, old_name,
old_dentry->d_name.name, S_ISDIR(old_dentry->d_inode->i_mode),
S_ISDIR(old_dentry->d_inode->i_mode),
NULL, old_dentry);
fsnotify_oldname_free(old_name);
unlock_rename(new_dir, old_dir);

6
fs/ext4/file.c
View File

@ -116,11 +116,9 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
* devices or filesystem images.
*/
memset(buf, 0, sizeof(buf));
path.mnt = mnt->mnt_parent;
path.dentry = mnt->mnt_mountpoint;
path_get(&path);
path.mnt = mnt;
path.dentry = mnt->mnt_root;
cp = d_path(&path, buf, sizeof(buf));
path_put(&path);
if (!IS_ERR(cp)) {
memcpy(sbi->s_es->s_last_mounted, cp,
sizeof(sbi->s_es->s_last_mounted));

147
fs/gfs2/ops_inode.c
View File

@ -975,103 +975,12 @@ out:
return error;
}
/**
* gfs2_readlinki - return the contents of a symlink
* @ip: the symlink's inode
* @buf: a pointer to the buffer to be filled
* @len: a pointer to the length of @buf
*
* If @buf is too small, a piece of memory is kmalloc()ed and needs
* to be freed by the caller.
*
* Returns: errno
*/
static int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len)
{
struct gfs2_holder i_gh;
struct buffer_head *dibh;
unsigned int x;
int error;
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
error = gfs2_glock_nq(&i_gh);
if (error) {
gfs2_holder_uninit(&i_gh);
return error;
}
if (!ip->i_disksize) {
gfs2_consist_inode(ip);
error = -EIO;
goto out;
}
error = gfs2_meta_inode_buffer(ip, &dibh);
if (error)
goto out;
x = ip->i_disksize + 1;
if (x > *len) {
*buf = kmalloc(x, GFP_NOFS);
if (!*buf) {
error = -ENOMEM;
goto out_brelse;
}
}
memcpy(*buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
*len = x;
out_brelse:
brelse(dibh);
out:
gfs2_glock_dq_uninit(&i_gh);
return error;
}
/**
* gfs2_readlink - Read the value of a symlink
* @dentry: the symlink
* @buf: the buffer to read the symlink data into
* @size: the size of the buffer
*
* Returns: errno
*/
static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
int user_size)
{
struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
char array[GFS2_FAST_NAME_SIZE], *buf = array;
unsigned int len = GFS2_FAST_NAME_SIZE;
int error;
error = gfs2_readlinki(ip, &buf, &len);
if (error)
return error;
if (user_size > len - 1)
user_size = len - 1;
if (copy_to_user(user_buf, buf, user_size))
error = -EFAULT;
else
error = user_size;
if (buf != array)
kfree(buf);
return error;
}
/**
* gfs2_follow_link - Follow a symbolic link
* @dentry: The dentry of the link
* @nd: Data that we pass to vfs_follow_link()
*
* This can handle symlinks of any size. It is optimised for symlinks
* under GFS2_FAST_NAME_SIZE.
* This can handle symlinks of any size.
*
* Returns: 0 on success or error code
*/
@ -1079,19 +988,50 @@ static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
char array[GFS2_FAST_NAME_SIZE], *buf = array;
unsigned int len = GFS2_FAST_NAME_SIZE;
struct gfs2_holder i_gh;
struct buffer_head *dibh;
unsigned int x;
char *buf;
int error;
error = gfs2_readlinki(ip, &buf, &len);
if (!error) {
error = vfs_follow_link(nd, buf);
if (buf != array)
kfree(buf);
} else
path_put(&nd->path);
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
error = gfs2_glock_nq(&i_gh);
if (error) {
gfs2_holder_uninit(&i_gh);
nd_set_link(nd, ERR_PTR(error));
return NULL;
}
return ERR_PTR(error);
if (!ip->i_disksize) {
gfs2_consist_inode(ip);
buf = ERR_PTR(-EIO);
goto out;
}
error = gfs2_meta_inode_buffer(ip, &dibh);
if (error) {
buf = ERR_PTR(error);
goto out;
}
x = ip->i_disksize + 1;
buf = kmalloc(x, GFP_NOFS);
if (!buf)
buf = ERR_PTR(-ENOMEM);
else
memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
brelse(dibh);
out:
gfs2_glock_dq_uninit(&i_gh);
nd_set_link(nd, buf);
return NULL;
}
static void gfs2_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
{
char *s = nd_get_link(nd);
if (!IS_ERR(s))
kfree(s);
}
/**
@ -1426,8 +1366,9 @@ const struct inode_operations gfs2_dir_iops = {
};
const struct inode_operations gfs2_symlink_iops = {
.readlink = gfs2_readlink,
.readlink = generic_readlink,
.follow_link = gfs2_follow_link,
.put_link = gfs2_put_link,
.permission = gfs2_permission,
.setattr = gfs2_setattr,
.getattr = gfs2_getattr,

2
fs/hpfs/anode.c
View File

@ -353,7 +353,7 @@ int hpfs_ea_read(struct super_block *s, secno a, int ano, unsigned pos,
}
int hpfs_ea_write(struct super_block *s, secno a, int ano, unsigned pos,
unsigned len, char *buf)
unsigned len, const char *buf)
{
struct buffer_head *bh;
char *data;

14
fs/hpfs/dentry.c
View File

@ -20,8 +20,8 @@ static int hpfs_hash_dentry(struct dentry *dentry, struct qstr *qstr)
if (l == 1) if (qstr->name[0]=='.') goto x;
if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x;
hpfs_adjust_length((char *)qstr->name, &l);
/*if (hpfs_chk_name((char *)qstr->name,&l))*/
hpfs_adjust_length(qstr->name, &l);
/*if (hpfs_chk_name(qstr->name,&l))*/
/*return -ENAMETOOLONG;*/
/*return -ENOENT;*/
x:
@ -38,14 +38,16 @@ static int hpfs_compare_dentry(struct dentry *dentry, struct qstr *a, struct qst
{
unsigned al=a->len;
unsigned bl=b->len;
hpfs_adjust_length((char *)a->name, &al);
/*hpfs_adjust_length((char *)b->name, &bl);*/
hpfs_adjust_length(a->name, &al);
/*hpfs_adjust_length(b->name, &bl);*/
/* 'a' is the qstr of an already existing dentry, so the name
* must be valid. 'b' must be validated first.
*/
if (hpfs_chk_name((char *)b->name, &bl)) return 1;
if (hpfs_compare_names(dentry->d_sb, (char *)a->name, al, (char *)b->name, bl, 0)) return 1;
if (hpfs_chk_name(b->name, &bl))
return 1;
if (hpfs_compare_names(dentry->d_sb, a->name, al, b->name, bl, 0))
return 1;
return 0;
}

14
fs/hpfs/dir.c
View File

@ -59,7 +59,7 @@ static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
struct hpfs_dirent *de;
int lc;
long old_pos;
char *tempname;
unsigned char *tempname;
int c1, c2 = 0;
int ret = 0;
@ -158,11 +158,11 @@ static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
tempname = hpfs_translate_name(inode->i_sb, de->name, de->namelen, lc, de->not_8x3);
if (filldir(dirent, tempname, de->namelen, old_pos, de->fnode, DT_UNKNOWN) < 0) {
filp->f_pos = old_pos;
if (tempname != (char *)de->name) kfree(tempname);
if (tempname != de->name) kfree(tempname);
hpfs_brelse4(&qbh);
goto out;
}
if (tempname != (char *)de->name) kfree(tempname);
if (tempname != de->name) kfree(tempname);
hpfs_brelse4(&qbh);
}
out:
@ -187,7 +187,7 @@ out:
struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
@ -197,7 +197,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name
struct hpfs_inode_info *hpfs_result;
lock_kernel();
if ((err = hpfs_chk_name((char *)name, &len))) {
if ((err = hpfs_chk_name(name, &len))) {
if (err == -ENAMETOOLONG) {
unlock_kernel();
return ERR_PTR(-ENAMETOOLONG);
@ -209,7 +209,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name
* '.' and '..' will never be passed here.
*/
de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *) name, len, NULL, &qbh);
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, NULL, &qbh);
/*
* This is not really a bailout, just means file not found.
@ -250,7 +250,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name
hpfs_result = hpfs_i(result);
if (!de->directory) hpfs_result->i_parent_dir = dir->i_ino;
hpfs_decide_conv(result, (char *)name, len);
hpfs_decide_conv(result, name, len);
if (de->has_acl || de->has_xtd_perm) if (!(dir->i_sb->s_flags & MS_RDONLY)) {
hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably HPFS386. This driver doesn't support it now. Send me some info on these structures");

21
fs/hpfs/dnode.c
View File

@ -158,7 +158,8 @@ static void set_last_pointer(struct super_block *s, struct dnode *d, dnode_secno
/* Add an entry to dnode and don't care if it grows over 2048 bytes */
struct hpfs_dirent *hpfs_add_de(struct super_block *s, struct dnode *d, unsigned char *name,
struct hpfs_dirent *hpfs_add_de(struct super_block *s, struct dnode *d,
const unsigned char *name,
unsigned namelen, secno down_ptr)
{
struct hpfs_dirent *de;
@ -223,7 +224,7 @@ static void fix_up_ptrs(struct super_block *s, struct dnode *d)
/* Add an entry to dnode and do dnode splitting if required */
static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
unsigned char *name, unsigned namelen,
const unsigned char *name, unsigned namelen,
struct hpfs_dirent *new_de, dnode_secno down_ptr)
{
struct quad_buffer_head qbh, qbh1, qbh2;
@ -231,7 +232,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
dnode_secno adno, rdno;
struct hpfs_dirent *de;
struct hpfs_dirent nde;
char *nname;
unsigned char *nname;
int h;
int pos;
struct buffer_head *bh;
@ -305,7 +306,9 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
pos++;
}
copy_de(new_de = &nde, de);
memcpy(name = nname, de->name, namelen = de->namelen);
memcpy(nname, de->name, de->namelen);
name = nname;
namelen = de->namelen;
for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | pos, 4);
down_ptr = adno;
set_last_pointer(i->i_sb, ad, de->down ? de_down_pointer(de) : 0);
@ -368,7 +371,8 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
* I hope, now it's finally bug-free.
*/
int hpfs_add_dirent(struct inode *i, unsigned char *name, unsigned namelen,
int hpfs_add_dirent(struct inode *i,
const unsigned char *name, unsigned namelen,
struct hpfs_dirent *new_de, int cdepth)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
@ -897,7 +901,8 @@ struct hpfs_dirent *map_pos_dirent(struct inode *inode, loff_t *posp,
/* Find a dirent in tree */
struct hpfs_dirent *map_dirent(struct inode *inode, dnode_secno dno, char *name, unsigned len,
struct hpfs_dirent *map_dirent(struct inode *inode, dnode_secno dno,
const unsigned char *name, unsigned len,
dnode_secno *dd, struct quad_buffer_head *qbh)
{
struct dnode *dnode;
@ -988,8 +993,8 @@ void hpfs_remove_dtree(struct super_block *s, dnode_secno dno)
struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno,
struct fnode *f, struct quad_buffer_head *qbh)
{
char *name1;
char *name2;
unsigned char *name1;
unsigned char *name2;
int name1len, name2len;
struct dnode *d;
dnode_secno dno, downd;

7
fs/hpfs/ea.c
View File

@ -62,8 +62,8 @@ static char *get_indirect_ea(struct super_block *s, int ano, secno a, int size)
return ret;
}
static void set_indirect_ea(struct super_block *s, int ano, secno a, char *data,
int size)
static void set_indirect_ea(struct super_block *s, int ano, secno a,
const char *data, int size)
{
hpfs_ea_write(s, a, ano, 0, size, data);
}
@ -186,7 +186,8 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si
* This driver can't change sizes of eas ('cause I just don't need it).
*/
void hpfs_set_ea(struct inode *inode, struct fnode *fnode, char *key, char *data, int size)
void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key,
const char *data, int size)
{
fnode_secno fno = inode->i_ino;
struct super_block *s = inode->i_sb;

30
fs/hpfs/hpfs_fn.h
View File

@ -215,7 +215,7 @@ secno hpfs_bplus_lookup(struct super_block *, struct inode *, struct bplus_heade
secno hpfs_add_sector_to_btree(struct super_block *, secno, int, unsigned);
void hpfs_remove_btree(struct super_block *, struct bplus_header *);
int hpfs_ea_read(struct super_block *, secno, int, unsigned, unsigned, char *);
int hpfs_ea_write(struct super_block *, secno, int, unsigned, unsigned, char *);
int hpfs_ea_write(struct super_block *, secno, int, unsigned, unsigned, const char *);
void hpfs_ea_remove(struct super_block *, secno, int, unsigned);
void hpfs_truncate_btree(struct super_block *, secno, int, unsigned);
void hpfs_remove_fnode(struct super_block *, fnode_secno fno);
@ -244,13 +244,17 @@ extern const struct file_operations hpfs_dir_ops;
void hpfs_add_pos(struct inode *, loff_t *);
void hpfs_del_pos(struct inode *, loff_t *);
struct hpfs_dirent *hpfs_add_de(struct super_block *, struct dnode *, unsigned char *, unsigned, secno);
int hpfs_add_dirent(struct inode *, unsigned char *, unsigned, struct hpfs_dirent *, int);
struct hpfs_dirent *hpfs_add_de(struct super_block *, struct dnode *,
const unsigned char *, unsigned, secno);
int hpfs_add_dirent(struct inode *, const unsigned char *, unsigned,
struct hpfs_dirent *, int);
int hpfs_remove_dirent(struct inode *, dnode_secno, struct hpfs_dirent *, struct quad_buffer_head *, int);
void hpfs_count_dnodes(struct super_block *, dnode_secno, int *, int *, int *);
dnode_secno hpfs_de_as_down_as_possible(struct super_block *, dnode_secno dno);
struct hpfs_dirent *map_pos_dirent(struct inode *, loff_t *, struct quad_buffer_head *);
struct hpfs_dirent *map_dirent(struct inode *, dnode_secno, char *, unsigned, dnode_secno *, struct quad_buffer_head *);
struct hpfs_dirent *map_dirent(struct inode *, dnode_secno,
const unsigned char *, unsigned, dnode_secno *,
struct quad_buffer_head *);
void hpfs_remove_dtree(struct super_block *, dnode_secno);
struct hpfs_dirent *map_fnode_dirent(struct super_block *, fnode_secno, struct fnode *, struct quad_buffer_head *);
@ -259,7 +263,8 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *, fnode_secno, struct f
void hpfs_ea_ext_remove(struct super_block *, secno, int, unsigned);
int hpfs_read_ea(struct super_block *, struct fnode *, char *, char *, int);
char *hpfs_get_ea(struct super_block *, struct fnode *, char *, int *);
void hpfs_set_ea(struct inode *, struct fnode *, char *, char *, int);
void hpfs_set_ea(struct inode *, struct fnode *, const char *,
const char *, int);
/* file.c */
@ -282,7 +287,7 @@ void hpfs_delete_inode(struct inode *);
unsigned *hpfs_map_dnode_bitmap(struct super_block *, struct quad_buffer_head *);
unsigned *hpfs_map_bitmap(struct super_block *, unsigned, struct quad_buffer_head *, char *);
char *hpfs_load_code_page(struct super_block *, secno);
unsigned char *hpfs_load_code_page(struct super_block *, secno);
secno *hpfs_load_bitmap_directory(struct super_block *, secno bmp);
struct fnode *hpfs_map_fnode(struct super_block *s, ino_t, struct buffer_head **);
struct anode *hpfs_map_anode(struct super_block *s, anode_secno, struct buffer_head **);
@ -292,12 +297,13 @@ dnode_secno hpfs_fnode_dno(struct super_block *s, ino_t ino);
/* name.c */
unsigned char hpfs_upcase(unsigned char *, unsigned char);
int hpfs_chk_name(unsigned char *, unsigned *);
char *hpfs_translate_name(struct super_block *, unsigned char *, unsigned, int, int);
int hpfs_compare_names(struct super_block *, unsigned char *, unsigned, unsigned char *, unsigned, int);
int hpfs_is_name_long(unsigned char *, unsigned);
void hpfs_adjust_length(unsigned char *, unsigned *);
void hpfs_decide_conv(struct inode *, unsigned char *, unsigned);
int hpfs_chk_name(const unsigned char *, unsigned *);
unsigned char *hpfs_translate_name(struct super_block *, unsigned char *, unsigned, int, int);
int hpfs_compare_names(struct super_block *, const unsigned char *, unsigned,
const unsigned char *, unsigned, int);
int hpfs_is_name_long(const unsigned char *, unsigned);
void hpfs_adjust_length(const unsigned char *, unsigned *);
void hpfs_decide_conv(struct inode *, const unsigned char *, unsigned);
/* namei.c */

4
fs/hpfs/inode.c
View File

@ -46,7 +46,7 @@ void hpfs_read_inode(struct inode *i)
struct fnode *fnode;
struct super_block *sb = i->i_sb;
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
unsigned char *ea;
void *ea;
int ea_size;
if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
@ -112,7 +112,7 @@ void hpfs_read_inode(struct inode *i)
}
}
if (fnode->dirflag) {
unsigned n_dnodes, n_subdirs;
int n_dnodes, n_subdirs;
i->i_mode |= S_IFDIR;
i->i_op = &hpfs_dir_iops;
i->i_fop = &hpfs_dir_ops;

6
fs/hpfs/map.c
View File

@ -35,7 +35,7 @@ unsigned int *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block,
* lowercasing table
*/
char *hpfs_load_code_page(struct super_block *s, secno cps)
unsigned char *hpfs_load_code_page(struct super_block *s, secno cps)
{
struct buffer_head *bh;
secno cpds;
@ -71,7 +71,7 @@ char *hpfs_load_code_page(struct super_block *s, secno cps)
brelse(bh);
return NULL;
}
ptr = (char *)cpd + cpd->offs[cpi] + 6;
ptr = (unsigned char *)cpd + cpd->offs[cpi] + 6;
if (!(cp_table = kmalloc(256, GFP_KERNEL))) {
printk("HPFS: out of memory for code page table\n");
brelse(bh);
@ -217,7 +217,7 @@ struct dnode *hpfs_map_dnode(struct super_block *s, unsigned secno,
if ((dnode = hpfs_map_4sectors(s, secno, qbh, DNODE_RD_AHEAD)))
if (hpfs_sb(s)->sb_chk) {
unsigned p, pp = 0;
unsigned char *d = (char *)dnode;
unsigned char *d = (unsigned char *)dnode;
int b = 0;
if (dnode->magic != DNODE_MAGIC) {
hpfs_error(s, "bad magic on dnode %08x", secno);

21
fs/hpfs/name.c
View File

@ -8,16 +8,16 @@
#include "hpfs_fn.h"
static char *text_postfix[]={
static const char *text_postfix[]={
".ASM", ".BAS", ".BAT", ".C", ".CC", ".CFG", ".CMD", ".CON", ".CPP", ".DEF",
".DOC", ".DPR", ".ERX", ".H", ".HPP", ".HTM", ".HTML", ".JAVA", ".LOG", ".PAS",
".RC", ".TEX", ".TXT", ".Y", ""};
static char *text_prefix[]={
static const char *text_prefix[]={
"AUTOEXEC.", "CHANGES", "COPYING", "CONFIG.", "CREDITS", "FAQ", "FILE_ID.DIZ",
"MAKEFILE", "READ.ME", "README", "TERMCAP", ""};
void hpfs_decide_conv(struct inode *inode, unsigned char *name, unsigned len)
void hpfs_decide_conv(struct inode *inode, const unsigned char *name, unsigned len)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
int i;
@ -71,7 +71,7 @@ static inline unsigned char locase(unsigned char *dir, unsigned char a)
return dir[a];
}
int hpfs_chk_name(unsigned char *name, unsigned *len)
int hpfs_chk_name(const unsigned char *name, unsigned *len)
{
int i;
if (*len > 254) return -ENAMETOOLONG;
@ -83,10 +83,10 @@ int hpfs_chk_name(unsigned char *name, unsigned *len)
return 0;
}
char *hpfs_translate_name(struct super_block *s, unsigned char *from,
unsigned char *hpfs_translate_name(struct super_block *s, unsigned char *from,
unsigned len, int lc, int lng)
{
char *to;
unsigned char *to;
int i;
if (hpfs_sb(s)->sb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) {
printk("HPFS: Long name flag mismatch - name ");
@ -103,8 +103,9 @@ char *hpfs_translate_name(struct super_block *s, unsigned char *from,
return to;
}
int hpfs_compare_names(struct super_block *s, unsigned char *n1, unsigned l1,
unsigned char *n2, unsigned l2, int last)
int hpfs_compare_names(struct super_block *s,
const unsigned char *n1, unsigned l1,
const unsigned char *n2, unsigned l2, int last)
{
unsigned l = l1 < l2 ? l1 : l2;
unsigned i;
@ -120,7 +121,7 @@ int hpfs_compare_names(struct super_block *s, unsigned char *n1, unsigned l1,
return 0;
}
int hpfs_is_name_long(unsigned char *name, unsigned len)
int hpfs_is_name_long(const unsigned char *name, unsigned len)
{
int i,j;
for (i = 0; i < len && name[i] != '.'; i++)
@ -134,7 +135,7 @@ int hpfs_is_name_long(unsigned char *name, unsigned len)
/* OS/2 clears dots and spaces at the end of file name, so we have to */
void hpfs_adjust_length(unsigned char *name, unsigned *len)
void hpfs_adjust_length(const unsigned char *name, unsigned *len)
{
if (!*len) return;
if (*len == 1 && name[0] == '.') return;

75
fs/hpfs/namei.c
View File

@ -11,7 +11,7 @@
static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh0;
struct buffer_head *bh;
@ -24,7 +24,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
int r;
struct hpfs_dirent dee;
int err;
if ((err = hpfs_chk_name((char *)name, &len))) return err==-ENOENT ? -EINVAL : err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
lock_kernel();
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
@ -62,7 +62,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
result->i_mode &= ~0222;
mutex_lock(&hpfs_i(dir)->i_mutex);
r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail3;
if (r == -1) {
@ -121,7 +121,7 @@ bail:
static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
{
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct inode *result = NULL;
struct buffer_head *bh;
@ -130,7 +130,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
int r;
struct hpfs_dirent dee;
int err;
if ((err = hpfs_chk_name((char *)name, &len)))
if ((err = hpfs_chk_name(name, &len)))
return err==-ENOENT ? -EINVAL : err;
lock_kernel();
err = -ENOSPC;
@ -155,7 +155,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
result->i_op = &hpfs_file_iops;
result->i_fop = &hpfs_file_ops;
result->i_nlink = 1;
hpfs_decide_conv(result, (char *)name, len);
hpfs_decide_conv(result, name, len);
hpfs_i(result)->i_parent_dir = dir->i_ino;
result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, dee.creation_date);
result->i_ctime.tv_nsec = 0;
@ -170,7 +170,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
hpfs_i(result)->mmu_private = 0;
mutex_lock(&hpfs_i(dir)->i_mutex);
r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail2;
if (r == -1) {
@ -211,7 +211,7 @@ bail:
static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
{
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct buffer_head *bh;
struct fnode *fnode;
@ -220,7 +220,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t
struct hpfs_dirent dee;
struct inode *result = NULL;
int err;
if ((err = hpfs_chk_name((char *)name, &len))) return err==-ENOENT ? -EINVAL : err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
if (hpfs_sb(dir->i_sb)->sb_eas < 2) return -EPERM;
if (!new_valid_dev(rdev))
return -EINVAL;
@ -256,7 +256,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t
init_special_inode(result, mode, rdev);
mutex_lock(&hpfs_i(dir)->i_mutex);
r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail2;
if (r == -1) {
@ -289,7 +289,7 @@ bail:
static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *symlink)
{
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct buffer_head *bh;
struct fnode *fnode;
@ -298,7 +298,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
struct hpfs_dirent dee;
struct inode *result;
int err;
if ((err = hpfs_chk_name((char *)name, &len))) return err==-ENOENT ? -EINVAL : err;
if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
lock_kernel();
if (hpfs_sb(dir->i_sb)->sb_eas < 2) {
unlock_kernel();
@ -335,7 +335,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
result->i_data.a_ops = &hpfs_symlink_aops;
mutex_lock(&hpfs_i(dir)->i_mutex);
r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail2;
if (r == -1) {
@ -345,7 +345,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
fnode->len = len;
memcpy(fnode->name, name, len > 15 ? 15 : len);
fnode->up = dir->i_ino;
hpfs_set_ea(result, fnode, "SYMLINK", (char *)symlink, strlen(symlink));
hpfs_set_ea(result, fnode, "SYMLINK", symlink, strlen(symlink));
mark_buffer_dirty(bh);
brelse(bh);
@ -369,7 +369,7 @@ bail:
static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
{
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
@ -381,12 +381,12 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
int err;
lock_kernel();
hpfs_adjust_length((char *)name, &len);
hpfs_adjust_length(name, &len);
again:
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
mutex_lock(&hpfs_i(dir)->i_mutex);
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *)name, len, &dno, &qbh);
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
@ -413,22 +413,25 @@ again:
mutex_unlock(&hpfs_i(dir)->i_mutex);
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
d_drop(dentry);
spin_lock(&dentry->d_lock);
if (atomic_read(&dentry->d_count) > 1 ||
generic_permission(inode, MAY_WRITE, NULL) ||
dentry_unhash(dentry);
if (!d_unhashed(dentry)) {
dput(dentry);
unlock_kernel();
return -ENOSPC;
}
if (generic_permission(inode, MAY_WRITE, NULL) ||
!S_ISREG(inode->i_mode) ||
get_write_access(inode)) {
spin_unlock(&dentry->d_lock);
d_rehash(dentry);
dput(dentry);
} else {
struct iattr newattrs;
spin_unlock(&dentry->d_lock);
/*printk("HPFS: truncating file before delete.\n");*/
newattrs.ia_size = 0;
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
err = notify_change(dentry, &newattrs);
put_write_access(inode);
dput(dentry);
if (!err)
goto again;
}
@ -451,7 +454,7 @@ out:
static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
{
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
@ -462,12 +465,12 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
int err;
int r;
hpfs_adjust_length((char *)name, &len);
hpfs_adjust_length(name, &len);
lock_kernel();
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
mutex_lock(&hpfs_i(dir)->i_mutex);
err = -ENOENT;
de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *)name, len, &dno, &qbh);
de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
@ -546,10 +549,10 @@ const struct address_space_operations hpfs_symlink_aops = {
static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
char *old_name = (char *)old_dentry->d_name.name;
int old_len = old_dentry->d_name.len;
char *new_name = (char *)new_dentry->d_name.name;
int new_len = new_dentry->d_name.len;
const unsigned char *old_name = old_dentry->d_name.name;
unsigned old_len = old_dentry->d_name.len;
const unsigned char *new_name = new_dentry->d_name.name;
unsigned new_len = new_dentry->d_name.len;
struct inode *i = old_dentry->d_inode;
struct inode *new_inode = new_dentry->d_inode;
struct quad_buffer_head qbh, qbh1;
@ -560,9 +563,9 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct buffer_head *bh;
struct fnode *fnode;
int err;
if ((err = hpfs_chk_name((char *)new_name, &new_len))) return err;
if ((err = hpfs_chk_name(new_name, &new_len))) return err;
err = 0;
hpfs_adjust_length((char *)old_name, &old_len);
hpfs_adjust_length(old_name, &old_len);
lock_kernel();
/* order doesn't matter, due to VFS exclusion */
@ -579,7 +582,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
goto end1;
}
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, (char *)old_name, old_len, &dno, &qbh))) {
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed");
err = -ENOENT;
goto end1;
@ -590,7 +593,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (new_inode) {
int r;
if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) {
if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, (char *)new_name, new_len, NULL, &qbh1))) {
if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, new_name, new_len, NULL, &qbh1))) {
clear_nlink(new_inode);
copy_de(nde, &de);
memcpy(nde->name, new_name, new_len);
@ -618,7 +621,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
if (new_dir == old_dir)
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, (char *)old_name, old_len, &dno, &qbh))) {
if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_unlock_creation(i->i_sb);
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2");
err = -ENOENT;
@ -648,7 +651,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
brelse(bh);
}
hpfs_i(i)->i_conv = hpfs_sb(i->i_sb)->sb_conv;
hpfs_decide_conv(i, (char *)new_name, new_len);
hpfs_decide_conv(i, new_name, new_len);
end1:
if (old_dir != new_dir)
mutex_unlock(&hpfs_i(new_dir)->i_mutex);

2
fs/hppfs/hppfs.c
View File

@ -718,7 +718,7 @@ static int hppfs_fill_super(struct super_block *sb, void *d, int silent)
struct vfsmount *proc_mnt;
int err = -ENOENT;
proc_mnt = do_kern_mount("proc", 0, "proc", NULL);
proc_mnt = mntget(current->nsproxy->pid_ns->proc_mnt);
if (IS_ERR(proc_mnt))
goto out;

2
fs/internal.h
View File

@ -70,6 +70,8 @@ extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
extern void __init mnt_init(void);
extern spinlock_t vfsmount_lock;
/*
* fs_struct.c
*/

81
fs/libfs.c
View File

@ -338,28 +338,14 @@ int simple_readpage(struct file *file, struct page *page)
return 0;
}
int simple_prepare_write(struct file *file, struct page *page,
unsigned from, unsigned to)
{
if (!PageUptodate(page)) {
if (to - from != PAGE_CACHE_SIZE)
zero_user_segments(page,
0, from,
to, PAGE_CACHE_SIZE);
}
return 0;
}
int simple_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
struct page *page;
pgoff_t index;
unsigned from;
index = pos >> PAGE_CACHE_SHIFT;
from = pos & (PAGE_CACHE_SIZE - 1);
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page)
@ -367,14 +353,48 @@ int simple_write_begin(struct file *file, struct address_space *mapping,
*pagep = page;
return simple_prepare_write(file, page, from, from+len);
if (!PageUptodate(page) && (len != PAGE_CACHE_SIZE)) {
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
zero_user_segments(page, 0, from, from + len, PAGE_CACHE_SIZE);
}
return 0;
}
static int simple_commit_write(struct file *file, struct page *page,
unsigned from, unsigned to)
/**
* simple_write_end - .write_end helper for non-block-device FSes
* @available: See .write_end of address_space_operations
* @file: "
* @mapping: "
* @pos: "
* @len: "
* @copied: "
* @page: "
* @fsdata: "
*
* simple_write_end does the minimum needed for updating a page after writing is
* done. It has the same API signature as the .write_end of
* address_space_operations vector. So it can just be set onto .write_end for
* FSes that don't need any other processing. i_mutex is assumed to be held.
* Block based filesystems should use generic_write_end().
* NOTE: Even though i_size might get updated by this function, mark_inode_dirty
* is not called, so a filesystem that actually does store data in .write_inode
* should extend on what's done here with a call to mark_inode_dirty() in the
* case that i_size has changed.
*/
int simple_write_end(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
{
struct inode *inode = page->mapping->host;
loff_t pos = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
loff_t last_pos = pos + copied;
/* zero the stale part of the page if we did a short copy */
if (copied < len) {
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
zero_user(page, from + copied, len - copied);
}
if (!PageUptodate(page))
SetPageUptodate(page);
@ -382,28 +402,10 @@ static int simple_commit_write(struct file *file, struct page *page,
* No need to use i_size_read() here, the i_size
* cannot change under us because we hold the i_mutex.
*/
if (pos > inode->i_size)
i_size_write(inode, pos);
if (last_pos > inode->i_size)
i_size_write(inode, last_pos);
set_page_dirty(page);
return 0;
}
int simple_write_end(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
{
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
/* zero the stale part of the page if we did a short copy */
if (copied < len) {
void *kaddr = kmap_atomic(page, KM_USER0);
memset(kaddr + from + copied, 0, len - copied);
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_USER0);
}
simple_commit_write(file, page, from, from+copied);
unlock_page(page);
page_cache_release(page);
@ -853,7 +855,6 @@ EXPORT_SYMBOL(simple_getattr);
EXPORT_SYMBOL(simple_link);
EXPORT_SYMBOL(simple_lookup);
EXPORT_SYMBOL(simple_pin_fs);
EXPORT_UNUSED_SYMBOL(simple_prepare_write);
EXPORT_SYMBOL(simple_readpage);
EXPORT_SYMBOL(simple_release_fs);
EXPORT_SYMBOL(simple_rename);

5
fs/locks.c
View File

@ -1182,8 +1182,9 @@ int __break_lease(struct inode *inode, unsigned int mode)
struct file_lock *fl;
unsigned long break_time;
int i_have_this_lease = 0;
int want_write = (mode & O_ACCMODE) != O_RDONLY;
new_fl = lease_alloc(NULL, mode & FMODE_WRITE ? F_WRLCK : F_RDLCK);
new_fl = lease_alloc(NULL, want_write ? F_WRLCK : F_RDLCK);
lock_kernel();
@ -1197,7 +1198,7 @@ int __break_lease(struct inode *inode, unsigned int mode)
if (fl->fl_owner == current->files)
i_have_this_lease = 1;
if (mode & FMODE_WRITE) {
if (want_write) {
/* If we want write access, we have to revoke any lease. */
future = F_UNLCK | F_INPROGRESS;
} else if (flock->fl_type & F_INPROGRESS) {

44
fs/namei.c
View File

@ -689,33 +689,20 @@ static __always_inline void follow_dotdot(struct nameidata *nd)
set_root(nd);
while(1) {
struct vfsmount *parent;
struct dentry *old = nd->path.dentry;
if (nd->path.dentry == nd->root.dentry &&
nd->path.mnt == nd->root.mnt) {
break;
}
spin_lock(&dcache_lock);
if (nd->path.dentry != nd->path.mnt->mnt_root) {
nd->path.dentry = dget(nd->path.dentry->d_parent);
spin_unlock(&dcache_lock);
/* rare case of legitimate dget_parent()... */
nd->path.dentry = dget_parent(nd->path.dentry);
dput(old);
break;
}
spin_unlock(&dcache_lock);
spin_lock(&vfsmount_lock);
parent = nd->path.mnt->mnt_parent;
if (parent == nd->path.mnt) {
spin_unlock(&vfsmount_lock);
if (!follow_up(&nd->path))
break;
}
mntget(parent);
nd->path.dentry = dget(nd->path.mnt->mnt_mountpoint);
spin_unlock(&vfsmount_lock);
dput(old);
mntput(nd->path.mnt);
nd->path.mnt = parent;
}
follow_mount(&nd->path);
}
@ -1347,7 +1334,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
return -ENOENT;
BUG_ON(victim->d_parent->d_inode != dir);
audit_inode_child(victim->d_name.name, victim, dir);
audit_inode_child(victim, dir);
error = inode_permission(dir, MAY_WRITE | MAY_EXEC);
if (error)
@ -1503,7 +1490,7 @@ int may_open(struct path *path, int acc_mode, int flag)
* An append-only file must be opened in append mode for writing.
*/
if (IS_APPEND(inode)) {
if ((flag & FMODE_WRITE) && !(flag & O_APPEND))
if ((flag & O_ACCMODE) != O_RDONLY && !(flag & O_APPEND))
return -EPERM;
if (flag & O_TRUNC)
return -EPERM;
@ -1547,7 +1534,7 @@ static int handle_truncate(struct path *path)
* what get passed to sys_open().
*/
static int __open_namei_create(struct nameidata *nd, struct path *path,
int flag, int mode)
int open_flag, int mode)
{
int error;
struct dentry *dir = nd->path.dentry;
@ -1565,7 +1552,7 @@ out_unlock:
if (error)
return error;
/* Don't check for write permission, don't truncate */
return may_open(&nd->path, 0, flag & ~O_TRUNC);
return may_open(&nd->path, 0, open_flag & ~O_TRUNC);
}
/*
@ -1736,7 +1723,7 @@ do_last:
error = mnt_want_write(nd.path.mnt);
if (error)
goto exit_mutex_unlock;
error = __open_namei_create(&nd, &path, flag, mode);
error = __open_namei_create(&nd, &path, open_flag, mode);
if (error) {
mnt_drop_write(nd.path.mnt);
goto exit;
@ -1798,7 +1785,7 @@ ok:
if (error)
goto exit;
}
error = may_open(&nd.path, acc_mode, flag);
error = may_open(&nd.path, acc_mode, open_flag);
if (error) {
if (will_truncate)
mnt_drop_write(nd.path.mnt);
@ -2275,8 +2262,11 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
error = -EBUSY;
else {
error = security_inode_unlink(dir, dentry);
if (!error)
if (!error) {
error = dir->i_op->unlink(dir, dentry);
if (!error)
dentry->d_inode->i_flags |= S_DEAD;
}
}
mutex_unlock(&dentry->d_inode->i_mutex);
@ -2629,6 +2619,8 @@ static int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
else
error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
if (!error) {
if (target)
target->i_flags |= S_DEAD;
if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
d_move(old_dentry, new_dentry);
}
@ -2671,11 +2663,9 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
error = vfs_rename_dir(old_dir,old_dentry,new_dir,new_dentry);
else
error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry);
if (!error) {
const char *new_name = old_dentry->d_name.name;
fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir,
if (!error)
fsnotify_move(old_dir, new_dir, old_name, is_dir,
new_dentry->d_inode, old_dentry);
}
fsnotify_oldname_free(old_name);
return error;

53
fs/namespace.c
View File

@ -573,7 +573,7 @@ static struct vfsmount *clone_mnt(struct vfsmount *old, struct dentry *root,
mnt->mnt_master = old;
CLEAR_MNT_SHARED(mnt);
} else if (!(flag & CL_PRIVATE)) {
if ((flag & CL_PROPAGATION) || IS_MNT_SHARED(old))
if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(old))
list_add(&mnt->mnt_share, &old->mnt_share);
if (IS_MNT_SLAVE(old))
list_add(&mnt->mnt_slave, &old->mnt_slave);
@ -737,6 +737,21 @@ static void m_stop(struct seq_file *m, void *v)
up_read(&namespace_sem);
}
int mnt_had_events(struct proc_mounts *p)
{
struct mnt_namespace *ns = p->ns;
int res = 0;
spin_lock(&vfsmount_lock);
if (p->event != ns->event) {
p->event = ns->event;
res = 1;
}
spin_unlock(&vfsmount_lock);
return res;
}
struct proc_fs_info {
int flag;
const char *str;
@ -1121,8 +1136,15 @@ SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
{
struct path path;
int retval;
int lookup_flags = 0;
retval = user_path(name, &path);
if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
return -EINVAL;
if (!(flags & UMOUNT_NOFOLLOW))
lookup_flags |= LOOKUP_FOLLOW;
retval = user_path_at(AT_FDCWD, name, lookup_flags, &path);
if (retval)
goto out;
retval = -EINVAL;
@ -1246,6 +1268,21 @@ void drop_collected_mounts(struct vfsmount *mnt)
release_mounts(&umount_list);
}
int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
struct vfsmount *root)
{
struct vfsmount *mnt;
int res = f(root, arg);
if (res)
return res;
list_for_each_entry(mnt, &root->mnt_list, mnt_list) {
res = f(mnt, arg);
if (res)
return res;
}
return 0;
}
static void cleanup_group_ids(struct vfsmount *mnt, struct vfsmount *end)
{
struct vfsmount *p;
@ -1538,7 +1575,7 @@ static int do_remount(struct path *path, int flags, int mnt_flags,
err = do_remount_sb(sb, flags, data, 0);
if (!err) {
spin_lock(&vfsmount_lock);
mnt_flags |= path->mnt->mnt_flags & MNT_PNODE_MASK;
mnt_flags |= path->mnt->mnt_flags & MNT_PROPAGATION_MASK;
path->mnt->mnt_flags = mnt_flags;
spin_unlock(&vfsmount_lock);
}
@ -1671,7 +1708,7 @@ int do_add_mount(struct vfsmount *newmnt, struct path *path,
{
int err;
mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD);
mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL);
down_write(&namespace_sem);
/* Something was mounted here while we slept */
@ -2314,17 +2351,13 @@ void __init mnt_init(void)
void put_mnt_ns(struct mnt_namespace *ns)
{
struct vfsmount *root;
LIST_HEAD(umount_list);
if (!atomic_dec_and_lock(&ns->count, &vfsmount_lock))
if (!atomic_dec_and_test(&ns->count))
return;
root = ns->root;
ns->root = NULL;
spin_unlock(&vfsmount_lock);
down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
umount_tree(root, 0, &umount_list);
umount_tree(ns->root, 0, &umount_list);
spin_unlock(&vfsmount_lock);
up_write(&namespace_sem);
release_mounts(&umount_list);

8
fs/nfs/inode.c
View File

@ -574,14 +574,14 @@ void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
nfs_revalidate_inode(server, inode);
}
static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, struct dentry *dentry, struct rpc_cred *cred)
static struct nfs_open_context *alloc_nfs_open_context(struct path *path, struct rpc_cred *cred)
{
struct nfs_open_context *ctx;
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (ctx != NULL) {
ctx->path.dentry = dget(dentry);
ctx->path.mnt = mntget(mnt);
ctx->path = *path;
path_get(&ctx->path);
ctx->cred = get_rpccred(cred);
ctx->state = NULL;
ctx->lockowner = current->files;
@ -686,7 +686,7 @@ int nfs_open(struct inode *inode, struct file *filp)
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
ctx = alloc_nfs_open_context(filp->f_path.mnt, filp->f_path.dentry, cred);
ctx = alloc_nfs_open_context(&filp->f_path, cred);
put_rpccred(cred);
if (ctx == NULL)
return -ENOMEM;

8
fs/nfs/nfs4proc.c
View File

@ -724,8 +724,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
if (p->o_arg.seqid == NULL)
goto err_free;
p->path.mnt = mntget(path->mnt);
p->path.dentry = dget(path->dentry);
path_get(path);
p->path = *path;
p->dir = parent;
p->owner = sp;
atomic_inc(&sp->so_count);
@ -1944,8 +1944,8 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
calldata->path.mnt = mntget(path->mnt);
calldata->path.dentry = dget(path->dentry);
path_get(path);
calldata->path = *path;
msg.rpc_argp = &calldata->arg,
msg.rpc_resp = &calldata->res,

5
fs/nfsctl.c
View File

@ -36,10 +36,9 @@ static struct file *do_open(char *name, int flags)
return ERR_PTR(error);
if (flags == O_RDWR)
error = may_open(&nd.path, MAY_READ|MAY_WRITE,
FMODE_READ|FMODE_WRITE);
error = may_open(&nd.path, MAY_READ|MAY_WRITE, flags);
else
error = may_open(&nd.path, MAY_WRITE, FMODE_WRITE);
error = may_open(&nd.path, MAY_WRITE, flags);
if (!error)
return dentry_open(nd.path.dentry, nd.path.mnt, flags,

12
fs/nfsd/nfs4xdr.c
View File

@ -2121,9 +2121,15 @@ out_acl:
* and this is the root of a cross-mounted filesystem.
*/
if (ignore_crossmnt == 0 &&
exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
exp->ex_path.mnt->mnt_mountpoint, &stat);
dentry == exp->ex_path.mnt->mnt_root) {
struct path path = exp->ex_path;
path_get(&path);
while (follow_up(&path)) {
if (path.dentry != path.mnt->mnt_root)
break;
}
err = vfs_getattr(path.mnt, path.dentry, &stat);
path_put(&path);
if (err)
goto out_nfserr;
}

4
fs/nfsd/vfs.c
View File

@ -361,7 +361,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
* If we are changing the size of the file, then
* we need to break all leases.
*/
host_err = break_lease(inode, FMODE_WRITE | O_NONBLOCK);
host_err = break_lease(inode, O_WRONLY | O_NONBLOCK);
if (host_err == -EWOULDBLOCK)
host_err = -ETIMEDOUT;
if (host_err) /* ENOMEM or EWOULDBLOCK */
@ -734,7 +734,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
* Check to see if there are any leases on this file.
* This may block while leases are broken.
*/
host_err = break_lease(inode, O_NONBLOCK | ((access & NFSD_MAY_WRITE) ? FMODE_WRITE : 0));
host_err = break_lease(inode, O_NONBLOCK | ((access & NFSD_MAY_WRITE) ? O_WRONLY : 0));
if (host_err == -EWOULDBLOCK)
host_err = -ETIMEDOUT;
if (host_err) /* NOMEM or WOULDBLOCK */

14
fs/nilfs2/dir.c
View File

@ -224,7 +224,7 @@ fail:
* len <= NILFS_NAME_LEN and de != NULL are guaranteed by caller.
*/
static int
nilfs_match(int len, const char * const name, struct nilfs_dir_entry *de)
nilfs_match(int len, const unsigned char *name, struct nilfs_dir_entry *de)
{
if (len != de->name_len)
return 0;
@ -349,11 +349,11 @@ done:
* Entry is guaranteed to be valid.
*/
struct nilfs_dir_entry *
nilfs_find_entry(struct inode *dir, struct dentry *dentry,
nilfs_find_entry(struct inode *dir, const struct qstr *qstr,
struct page **res_page)
{
const char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
const unsigned char *name = qstr->name;
int namelen = qstr->len;
unsigned reclen = NILFS_DIR_REC_LEN(namelen);
unsigned long start, n;
unsigned long npages = dir_pages(dir);
@ -424,13 +424,13 @@ struct nilfs_dir_entry *nilfs_dotdot(struct inode *dir, struct page **p)
return de;
}
ino_t nilfs_inode_by_name(struct inode *dir, struct dentry *dentry)
ino_t nilfs_inode_by_name(struct inode *dir, const struct qstr *qstr)
{
ino_t res = 0;
struct nilfs_dir_entry *de;
struct page *page;
de = nilfs_find_entry(dir, dentry, &page);
de = nilfs_find_entry(dir, qstr, &page);
if (de) {
res = le64_to_cpu(de->inode);
kunmap(page);
@ -465,7 +465,7 @@ void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
int nilfs_add_link(struct dentry *dentry, struct inode *inode)
{
struct inode *dir = dentry->d_parent->d_inode;
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
unsigned chunk_size = nilfs_chunk_size(dir);
unsigned reclen = NILFS_DIR_REC_LEN(namelen);

13
fs/nilfs2/namei.c
View File

@ -67,7 +67,7 @@ nilfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
if (dentry->d_name.len > NILFS_NAME_LEN)
return ERR_PTR(-ENAMETOOLONG);
ino = nilfs_inode_by_name(dir, dentry);
ino = nilfs_inode_by_name(dir, &dentry->d_name);
inode = NULL;
if (ino) {
inode = nilfs_iget(dir->i_sb, ino);
@ -81,10 +81,7 @@ struct dentry *nilfs_get_parent(struct dentry *child)
{
unsigned long ino;
struct inode *inode;
struct dentry dotdot;
dotdot.d_name.name = "..";
dotdot.d_name.len = 2;
struct qstr dotdot = {.name = "..", .len = 2};
ino = nilfs_inode_by_name(child->d_inode, &dotdot);
if (!ino)
@ -296,7 +293,7 @@ static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry)
int err;
err = -ENOENT;
de = nilfs_find_entry(dir, dentry, &page);
de = nilfs_find_entry(dir, &dentry->d_name, &page);
if (!de)
goto out;
@ -389,7 +386,7 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry,
return err;
err = -ENOENT;
old_de = nilfs_find_entry(old_dir, old_dentry, &old_page);
old_de = nilfs_find_entry(old_dir, &old_dentry->d_name, &old_page);
if (!old_de)
goto out;
@ -409,7 +406,7 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry,
goto out_dir;
err = -ENOENT;
new_de = nilfs_find_entry(new_dir, new_dentry, &new_page);
new_de = nilfs_find_entry(new_dir, &new_dentry->d_name, &new_page);
if (!new_de)
goto out_dir;
inc_nlink(old_inode);

4
fs/nilfs2/nilfs.h
View File

@ -217,10 +217,10 @@ static inline int nilfs_init_acl(struct inode *inode, struct inode *dir)
/* dir.c */
extern int nilfs_add_link(struct dentry *, struct inode *);
extern ino_t nilfs_inode_by_name(struct inode *, struct dentry *);
extern ino_t nilfs_inode_by_name(struct inode *, const struct qstr *);
extern int nilfs_make_empty(struct inode *, struct inode *);
extern struct nilfs_dir_entry *
nilfs_find_entry(struct inode *, struct dentry *, struct page **);
nilfs_find_entry(struct inode *, const struct qstr *, struct page **);
extern int nilfs_delete_entry(struct nilfs_dir_entry *, struct page *);
extern int nilfs_empty_dir(struct inode *);
extern struct nilfs_dir_entry *nilfs_dotdot(struct inode *, struct page **);

59
fs/notify/inotify/inotify_user.c
View File

@ -29,14 +29,12 @@
#include <linux/init.h> /* module_init */
#include <linux/inotify.h>
#include <linux/kernel.h> /* roundup() */
#include <linux/magic.h> /* superblock magic number */
#include <linux/mount.h> /* mntget */
#include <linux/namei.h> /* LOOKUP_FOLLOW */
#include <linux/path.h> /* struct path */
#include <linux/sched.h> /* struct user */
#include <linux/slab.h> /* struct kmem_cache */
#include <linux/syscalls.h>
#include <linux/types.h>
#include <linux/anon_inodes.h>
#include <linux/uaccess.h>
#include <linux/poll.h>
#include <linux/wait.h>
@ -45,8 +43,6 @@
#include <asm/ioctls.h>
static struct vfsmount *inotify_mnt __read_mostly;
/* these are configurable via /proc/sys/fs/inotify/ */
static int inotify_max_user_instances __read_mostly;
static int inotify_max_queued_events __read_mostly;
@ -645,9 +641,7 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
{
struct fsnotify_group *group;
struct user_struct *user;
struct file *filp;
struct path path;
int fd, ret;
int ret;
/* Check the IN_* constants for consistency. */
BUILD_BUG_ON(IN_CLOEXEC != O_CLOEXEC);
@ -656,10 +650,6 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
if (flags & ~(IN_CLOEXEC | IN_NONBLOCK))
return -EINVAL;
fd = get_unused_fd_flags(flags & O_CLOEXEC);
if (fd < 0)
return fd;
user = get_current_user();
if (unlikely(atomic_read(&user->inotify_devs) >=
inotify_max_user_instances)) {
@ -676,27 +666,14 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
atomic_inc(&user->inotify_devs);
path.mnt = inotify_mnt;
path.dentry = inotify_mnt->mnt_root;
path_get(&path);
filp = alloc_file(&path, FMODE_READ, &inotify_fops);
if (!filp)
goto Enfile;
ret = anon_inode_getfd("inotify", &inotify_fops, group,
O_RDONLY | flags);
if (ret >= 0)
return ret;
filp->f_flags = O_RDONLY | (flags & O_NONBLOCK);
filp->private_data = group;
fd_install(fd, filp);
return fd;
Enfile:
ret = -ENFILE;
path_put(&path);
atomic_dec(&user->inotify_devs);
out_free_uid:
free_uid(user);
put_unused_fd(fd);
return ret;
}
@ -783,20 +760,6 @@ out:
return ret;
}
static int
inotify_get_sb(struct file_system_type *fs_type, int flags,
const char *dev_name, void *data, struct vfsmount *mnt)
{
return get_sb_pseudo(fs_type, "inotify", NULL,
INOTIFYFS_SUPER_MAGIC, mnt);
}
static struct file_system_type inotify_fs_type = {
.name = "inotifyfs",
.get_sb = inotify_get_sb,
.kill_sb = kill_anon_super,
};
/*
* inotify_user_setup - Our initialization function. Note that we cannnot return
* error because we have compiled-in VFS hooks. So an (unlikely) failure here
@ -804,16 +767,6 @@ static struct file_system_type inotify_fs_type = {
*/
static int __init inotify_user_setup(void)
{
int ret;
ret = register_filesystem(&inotify_fs_type);
if (unlikely(ret))
panic("inotify: register_filesystem returned %d!\n", ret);
inotify_mnt = kern_mount(&inotify_fs_type);
if (IS_ERR(inotify_mnt))
panic("inotify: kern_mount ret %ld!\n", PTR_ERR(inotify_mnt));
inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark_entry, SLAB_PANIC);
event_priv_cachep = KMEM_CACHE(inotify_event_private_data, SLAB_PANIC);

2
fs/open.c
View File

@ -271,7 +271,7 @@ static long do_sys_truncate(const char __user *pathname, loff_t length)
* Make sure that there are no leases. get_write_access() protects
* against the truncate racing with a lease-granting setlease().
*/
error = break_lease(inode, FMODE_WRITE);
error = break_lease(inode, O_WRONLY);
if (error)
goto put_write_and_out;

28
fs/pnode.c
View File

@ -86,7 +86,7 @@ static int do_make_slave(struct vfsmount *mnt)
/*
* slave 'mnt' to a peer mount that has the
* same root dentry. If none is available than
* same root dentry. If none is available then
* slave it to anything that is available.
*/
while ((peer_mnt = next_peer(peer_mnt)) != mnt &&
@ -147,6 +147,11 @@ void change_mnt_propagation(struct vfsmount *mnt, int type)
* get the next mount in the propagation tree.
* @m: the mount seen last
* @origin: the original mount from where the tree walk initiated
*
* Note that peer groups form contiguous segments of slave lists.
* We rely on that in get_source() to be able to find out if
* vfsmount found while iterating with propagation_next() is
* a peer of one we'd found earlier.
*/
static struct vfsmount *propagation_next(struct vfsmount *m,
struct vfsmount *origin)
@ -186,10 +191,6 @@ static struct vfsmount *get_source(struct vfsmount *dest,
{
struct vfsmount *p_last_src = NULL;
struct vfsmount *p_last_dest = NULL;
*type = CL_PROPAGATION;
if (IS_MNT_SHARED(dest))
*type |= CL_MAKE_SHARED;
while (last_dest != dest->mnt_master) {
p_last_dest = last_dest;
@ -202,13 +203,18 @@ static struct vfsmount *get_source(struct vfsmount *dest,
do {
p_last_dest = next_peer(p_last_dest);
} while (IS_MNT_NEW(p_last_dest));
/* is that a peer of the earlier? */
if (dest == p_last_dest) {
*type = CL_MAKE_SHARED;
return p_last_src;
}
}
if (dest != p_last_dest) {
*type |= CL_SLAVE;
return last_src;
} else
return p_last_src;
/* slave of the earlier, then */
*type = CL_SLAVE;
/* beginning of peer group among the slaves? */
if (IS_MNT_SHARED(dest))
*type |= CL_MAKE_SHARED;
return last_src;
}
/*

5
fs/pnode.h
View File

@ -21,12 +21,11 @@
#define CL_SLAVE 0x02
#define CL_COPY_ALL 0x04
#define CL_MAKE_SHARED 0x08
#define CL_PROPAGATION 0x10
#define CL_PRIVATE 0x20
#define CL_PRIVATE 0x10
static inline void set_mnt_shared(struct vfsmount *mnt)
{
mnt->mnt_flags &= ~MNT_PNODE_MASK;
mnt->mnt_flags &= ~MNT_SHARED_MASK;
mnt->mnt_flags |= MNT_SHARED;
}

10
fs/proc/base.c
View File

@ -647,17 +647,11 @@ static int mounts_release(struct inode *inode, struct file *file)
static unsigned mounts_poll(struct file *file, poll_table *wait)
{
struct proc_mounts *p = file->private_data;
struct mnt_namespace *ns = p->ns;
unsigned res = POLLIN | POLLRDNORM;
poll_wait(file, &ns->poll, wait);
spin_lock(&vfsmount_lock);
if (p->event != ns->event) {
p->event = ns->event;
poll_wait(file, &p->ns->poll, wait);
if (mnt_had_events(p))
res |= POLLERR | POLLPRI;
}
spin_unlock(&vfsmount_lock);
return res;
}

5
fs/proc/generic.c
View File

@ -662,6 +662,7 @@ struct proc_dir_entry *proc_symlink(const char *name,
}
return ent;
}
EXPORT_SYMBOL(proc_symlink);
struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
struct proc_dir_entry *parent)
@ -700,6 +701,7 @@ struct proc_dir_entry *proc_mkdir(const char *name,
{
return proc_mkdir_mode(name, S_IRUGO | S_IXUGO, parent);
}
EXPORT_SYMBOL(proc_mkdir);
struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
struct proc_dir_entry *parent)
@ -728,6 +730,7 @@ struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
}
return ent;
}
EXPORT_SYMBOL(create_proc_entry);
struct proc_dir_entry *proc_create_data(const char *name, mode_t mode,
struct proc_dir_entry *parent,
@ -762,6 +765,7 @@ out_free:
out:
return NULL;
}
EXPORT_SYMBOL(proc_create_data);
static void free_proc_entry(struct proc_dir_entry *de)
{
@ -853,3 +857,4 @@ continue_removing:
de->parent->name, de->name, de->subdir->name);
pde_put(de);
}
EXPORT_SYMBOL(remove_proc_entry);

6
fs/proc/root.c
View File

@ -220,9 +220,3 @@ void pid_ns_release_proc(struct pid_namespace *ns)
{
mntput(ns->proc_mnt);
}
EXPORT_SYMBOL(proc_symlink);
EXPORT_SYMBOL(proc_mkdir);
EXPORT_SYMBOL(create_proc_entry);
EXPORT_SYMBOL(proc_create_data);
EXPORT_SYMBOL(remove_proc_entry);

21
fs/super.c
View File

@ -568,7 +568,7 @@ out:
int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
{
int retval;
int remount_rw;
int remount_rw, remount_ro;
if (sb->s_frozen != SB_UNFROZEN)
return -EBUSY;
@ -583,9 +583,12 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
shrink_dcache_sb(sb);
sync_filesystem(sb);
remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
remount_rw = !(flags & MS_RDONLY) && (sb->s_flags & MS_RDONLY);
/* If we are remounting RDONLY and current sb is read/write,
make sure there are no rw files opened */
if ((flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY)) {
if (remount_ro) {
if (force)
mark_files_ro(sb);
else if (!fs_may_remount_ro(sb))
@ -594,7 +597,6 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
if (retval < 0 && retval != -ENOSYS)
return -EBUSY;
}
remount_rw = !(flags & MS_RDONLY) && (sb->s_flags & MS_RDONLY);
if (sb->s_op->remount_fs) {
retval = sb->s_op->remount_fs(sb, &flags, data);
@ -604,6 +606,16 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
sb->s_flags = (sb->s_flags & ~MS_RMT_MASK) | (flags & MS_RMT_MASK);
if (remount_rw)
vfs_dq_quota_on_remount(sb);
/*
* Some filesystems modify their metadata via some other path than the
* bdev buffer cache (eg. use a private mapping, or directories in
* pagecache, etc). Also file data modifications go via their own
* mappings. So If we try to mount readonly then copy the filesystem
* from bdev, we could get stale data, so invalidate it to give a best
* effort at coherency.
*/
if (remount_ro && sb->s_bdev)
invalidate_bdev(sb->s_bdev);
return 0;
}
@ -925,6 +937,9 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void
if (!mnt)
goto out;
if (flags & MS_KERNMOUNT)
mnt->mnt_flags = MNT_INTERNAL;
if (data && !(type->fs_flags & FS_BINARY_MOUNTDATA)) {
secdata = alloc_secdata();
if (!secdata)

2
fs/udf/balloc.c
View File

@ -547,7 +547,7 @@ static void udf_table_free_blocks(struct super_block *sb,
}
if (epos.offset + (2 * adsize) > sb->s_blocksize) {
char *sptr, *dptr;
unsigned char *sptr, *dptr;
int loffset;
brelse(oepos.bh);

4
fs/udf/dir.c
View File

@ -45,8 +45,8 @@ static int do_udf_readdir(struct inode *dir, struct file *filp,
int block, iblock;
loff_t nf_pos = (filp->f_pos - 1) << 2;
int flen;
char *fname = NULL;
char *nameptr;
unsigned char *fname = NULL;
unsigned char *nameptr;
uint16_t liu;
uint8_t lfi;
loff_t size = udf_ext0_offset(dir) + dir->i_size;

2
fs/udf/inode.c
View File

@ -1672,7 +1672,7 @@ int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
return -1;
if (epos->offset + (2 * adsize) > inode->i_sb->s_blocksize) {
char *sptr, *dptr;
unsigned char *sptr, *dptr;
struct buffer_head *nbh;
int err, loffset;
struct kernel_lb_addr obloc = epos->block;

20
fs/udf/namei.c
View File

@ -34,8 +34,8 @@
#include <linux/crc-itu-t.h>
#include <linux/exportfs.h>
static inline int udf_match(int len1, const char *name1, int len2,
const char *name2)
static inline int udf_match(int len1, const unsigned char *name1, int len2,
const unsigned char *name2)
{
if (len1 != len2)
return 0;
@ -142,15 +142,15 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
}
static struct fileIdentDesc *udf_find_entry(struct inode *dir,
struct qstr *child,
const struct qstr *child,
struct udf_fileident_bh *fibh,
struct fileIdentDesc *cfi)
{
struct fileIdentDesc *fi = NULL;
loff_t f_pos;
int block, flen;
char *fname = NULL;
char *nameptr;
unsigned char *fname = NULL;
unsigned char *nameptr;
uint8_t lfi;
uint16_t liu;
loff_t size;
@ -308,7 +308,7 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
{
struct super_block *sb = dir->i_sb;
struct fileIdentDesc *fi = NULL;
char *name = NULL;
unsigned char *name = NULL;
int namelen;
loff_t f_pos;
loff_t size = udf_ext0_offset(dir) + dir->i_size;
@ -885,16 +885,16 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
{
struct inode *inode;
struct pathComponent *pc;
char *compstart;
const char *compstart;
struct udf_fileident_bh fibh;
struct extent_position epos = {};
int eoffset, elen = 0;
struct fileIdentDesc *fi;
struct fileIdentDesc cfi;
char *ea;
uint8_t *ea;
int err;
int block;
char *name = NULL;
unsigned char *name = NULL;
int namelen;
struct buffer_head *bh;
struct udf_inode_info *iinfo;
@ -970,7 +970,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
pc = (struct pathComponent *)(ea + elen);
compstart = (char *)symname;
compstart = symname;
do {
symname++;

10
fs/udf/symlink.c
View File

@ -32,12 +32,12 @@
#include <linux/buffer_head.h>
#include "udf_i.h"
static void udf_pc_to_char(struct super_block *sb, char *from, int fromlen,
char *to)
static void udf_pc_to_char(struct super_block *sb, unsigned char *from,
int fromlen, unsigned char *to)
{
struct pathComponent *pc;
int elen = 0;
char *p = to;
unsigned char *p = to;
while (elen < fromlen) {
pc = (struct pathComponent *)(from + elen);
@ -75,9 +75,9 @@ static int udf_symlink_filler(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
struct buffer_head *bh = NULL;
char *symlink;
unsigned char *symlink;
int err = -EIO;
char *p = kmap(page);
unsigned char *p = kmap(page);
struct udf_inode_info *iinfo;
lock_kernel();

10
fs/ufs/dir.c
View File

@ -31,7 +31,7 @@
* len <= UFS_MAXNAMLEN and de != NULL are guaranteed by caller.
*/
static inline int ufs_match(struct super_block *sb, int len,
const char * const name, struct ufs_dir_entry * de)
const unsigned char *name, struct ufs_dir_entry *de)
{
if (len != ufs_get_de_namlen(sb, de))
return 0;
@ -70,7 +70,7 @@ static inline unsigned long ufs_dir_pages(struct inode *inode)
return (inode->i_size+PAGE_CACHE_SIZE-1)>>PAGE_CACHE_SHIFT;
}
ino_t ufs_inode_by_name(struct inode *dir, struct qstr *qstr)
ino_t ufs_inode_by_name(struct inode *dir, const struct qstr *qstr)
{
ino_t res = 0;
struct ufs_dir_entry *de;
@ -249,11 +249,11 @@ struct ufs_dir_entry *ufs_dotdot(struct inode *dir, struct page **p)
* (as a parameter - res_dir). Page is returned mapped and unlocked.
* Entry is guaranteed to be valid.
*/
struct ufs_dir_entry *ufs_find_entry(struct inode *dir, struct qstr *qstr,
struct ufs_dir_entry *ufs_find_entry(struct inode *dir, const struct qstr *qstr,
struct page **res_page)
{
struct super_block *sb = dir->i_sb;
const char *name = qstr->name;
const unsigned char *name = qstr->name;
int namelen = qstr->len;
unsigned reclen = UFS_DIR_REC_LEN(namelen);
unsigned long start, n;
@ -313,7 +313,7 @@ found:
int ufs_add_link(struct dentry *dentry, struct inode *inode)
{
struct inode *dir = dentry->d_parent->d_inode;
const char *name = dentry->d_name.name;
const unsigned char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
struct super_block *sb = dir->i_sb;
unsigned reclen = UFS_DIR_REC_LEN(namelen);

4
fs/ufs/ufs.h
View File

@ -86,9 +86,9 @@ extern void ufs_put_cylinder (struct super_block *, unsigned);
/* dir.c */
extern const struct inode_operations ufs_dir_inode_operations;
extern int ufs_add_link (struct dentry *, struct inode *);
extern ino_t ufs_inode_by_name(struct inode *, struct qstr *);
extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
extern int ufs_make_empty(struct inode *, struct inode *);
extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct qstr *, struct page **);
extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
extern int ufs_empty_dir (struct inode *);
extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);

11
include/linux/audit.h
View File

@ -424,7 +424,7 @@ extern void audit_syscall_exit(int failed, long return_code);
extern void __audit_getname(const char *name);
extern void audit_putname(const char *name);
extern void __audit_inode(const char *name, const struct dentry *dentry);
extern void __audit_inode_child(const char *dname, const struct dentry *dentry,
extern void __audit_inode_child(const struct dentry *dentry,
const struct inode *parent);
extern void __audit_ptrace(struct task_struct *t);
@ -442,11 +442,10 @@ static inline void audit_inode(const char *name, const struct dentry *dentry) {
if (unlikely(!audit_dummy_context()))
__audit_inode(name, dentry);
}
static inline void audit_inode_child(const char *dname,
const struct dentry *dentry,
static inline void audit_inode_child(const struct dentry *dentry,
const struct inode *parent) {
if (unlikely(!audit_dummy_context()))
__audit_inode_child(dname, dentry, parent);
__audit_inode_child(dentry, parent);
}
void audit_core_dumps(long signr);
@ -544,9 +543,9 @@ extern int audit_signals;
#define audit_getname(n) do { ; } while (0)
#define audit_putname(n) do { ; } while (0)
#define __audit_inode(n,d) do { ; } while (0)
#define __audit_inode_child(d,i,p) do { ; } while (0)
#define __audit_inode_child(i,p) do { ; } while (0)
#define audit_inode(n,d) do { ; } while (0)
#define audit_inode_child(d,i,p) do { ; } while (0)
#define audit_inode_child(i,p) do { ; } while (0)
#define audit_core_dumps(i) do { ; } while (0)
#define auditsc_get_stamp(c,t,s) (0)
#define audit_get_loginuid(t) (-1)

26
include/linux/fs.h
View File

@ -1305,6 +1305,8 @@ extern int send_sigurg(struct fown_struct *fown);
#define MNT_FORCE 0x00000001 /* Attempt to forcibily umount */
#define MNT_DETACH 0x00000002 /* Just detach from the tree */
#define MNT_EXPIRE 0x00000004 /* Mark for expiry */
#define UMOUNT_NOFOLLOW 0x00000008 /* Don't follow symlink on umount */
#define UMOUNT_UNUSED 0x80000000 /* Flag guaranteed to be unused */
extern struct list_head super_blocks;
extern spinlock_t sb_lock;
@ -1314,9 +1316,9 @@ extern spinlock_t sb_lock;
struct super_block {
struct list_head s_list; /* Keep this first */
dev_t s_dev; /* search index; _not_ kdev_t */
unsigned long s_blocksize;
unsigned char s_blocksize_bits;
unsigned char s_dirt;
unsigned char s_blocksize_bits;
unsigned long s_blocksize;
loff_t s_maxbytes; /* Max file size */
struct file_system_type *s_type;
const struct super_operations *s_op;
@ -1357,16 +1359,16 @@ struct super_block {
void *s_fs_info; /* Filesystem private info */
fmode_t s_mode;
/* Granularity of c/m/atime in ns.
Cannot be worse than a second */
u32 s_time_gran;
/*
* The next field is for VFS *only*. No filesystems have any business
* even looking at it. You had been warned.
*/
struct mutex s_vfs_rename_mutex; /* Kludge */
/* Granularity of c/m/atime in ns.
Cannot be worse than a second */
u32 s_time_gran;
/*
* Filesystem subtype. If non-empty the filesystem type field
* in /proc/mounts will be "type.subtype"
@ -1794,7 +1796,8 @@ extern int may_umount(struct vfsmount *);
extern long do_mount(char *, char *, char *, unsigned long, void *);
extern struct vfsmount *collect_mounts(struct path *);
extern void drop_collected_mounts(struct vfsmount *);
extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *,
struct vfsmount *);
extern int vfs_statfs(struct dentry *, struct kstatfs *);
extern int current_umask(void);
@ -2058,12 +2061,6 @@ extern int invalidate_inodes(struct super_block *);
unsigned long invalidate_mapping_pages(struct address_space *mapping,
pgoff_t start, pgoff_t end);
static inline unsigned long __deprecated
invalidate_inode_pages(struct address_space *mapping)
{
return invalidate_mapping_pages(mapping, 0, ~0UL);
}
static inline void invalidate_remote_inode(struct inode *inode)
{
if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
@ -2132,6 +2129,7 @@ extern struct file * open_exec(const char *);
/* fs/dcache.c -- generic fs support functions */
extern int is_subdir(struct dentry *, struct dentry *);
extern int path_is_under(struct path *, struct path *);
extern ino_t find_inode_number(struct dentry *, struct qstr *);
#include <linux/err.h>
@ -2340,8 +2338,6 @@ extern int simple_rename(struct inode *, struct dentry *, struct inode *, struct
extern int simple_sync_file(struct file *, struct dentry *, int);
extern int simple_empty(struct dentry *);
extern int simple_readpage(struct file *file, struct page *page);
extern int simple_prepare_write(struct file *file, struct page *page,
unsigned offset, unsigned to);
extern int simple_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata);

11
include/linux/fsnotify.h
View File

@ -65,7 +65,7 @@ static inline void fsnotify_link_count(struct inode *inode)
* fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
*/
static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
const char *old_name, const char *new_name,
const char *old_name,
int isdir, struct inode *target, struct dentry *moved)
{
struct inode *source = moved->d_inode;
@ -73,6 +73,7 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
u32 fs_cookie = fsnotify_get_cookie();
__u32 old_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_FROM);
__u32 new_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_TO);
const char *new_name = moved->d_name.name;
if (old_dir == new_dir)
old_dir_mask |= FS_DN_RENAME;
@ -103,7 +104,7 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
inotify_inode_queue_event(source, IN_MOVE_SELF, 0, NULL, NULL);
fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
}
audit_inode_child(new_name, moved, new_dir);
audit_inode_child(moved, new_dir);
}
/*
@ -146,7 +147,7 @@ static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
{
inotify_inode_queue_event(inode, IN_CREATE, 0, dentry->d_name.name,
dentry->d_inode);
audit_inode_child(dentry->d_name.name, dentry, inode);
audit_inode_child(dentry, inode);
fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
}
@ -161,7 +162,7 @@ static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct
inotify_inode_queue_event(dir, IN_CREATE, 0, new_dentry->d_name.name,
inode);
fsnotify_link_count(inode);
audit_inode_child(new_dentry->d_name.name, new_dentry, dir);
audit_inode_child(new_dentry, dir);
fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, new_dentry->d_name.name, 0);
}
@ -175,7 +176,7 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
struct inode *d_inode = dentry->d_inode;
inotify_inode_queue_event(inode, mask, 0, dentry->d_name.name, d_inode);
audit_inode_child(dentry->d_name.name, dentry, inode);
audit_inode_child(dentry, inode);
fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
}

1
include/linux/magic.h
View File

@ -52,7 +52,6 @@
#define CGROUP_SUPER_MAGIC 0x27e0eb
#define FUTEXFS_SUPER_MAGIC 0xBAD1DEA
#define INOTIFYFS_SUPER_MAGIC 0x2BAD1DEA
#define STACK_END_MAGIC 0x57AC6E9D

1
include/linux/mnt_namespace.h
View File

@ -35,6 +35,7 @@ static inline void get_mnt_ns(struct mnt_namespace *ns)
extern const struct seq_operations mounts_op;
extern const struct seq_operations mountinfo_op;
extern const struct seq_operations mountstats_op;
extern int mnt_had_events(struct proc_mounts *);
#endif
#endif

14
include/linux/mount.h
View File

@ -34,7 +34,18 @@ struct mnt_namespace;
#define MNT_SHARED 0x1000 /* if the vfsmount is a shared mount */
#define MNT_UNBINDABLE 0x2000 /* if the vfsmount is a unbindable mount */
#define MNT_PNODE_MASK 0x3000 /* propagation flag mask */
/*
* MNT_SHARED_MASK is the set of flags that should be cleared when a
* mount becomes shared. Currently, this is only the flag that says a
* mount cannot be bind mounted, since this is how we create a mount
* that shares events with another mount. If you add a new MNT_*
* flag, consider how it interacts with shared mounts.
*/
#define MNT_SHARED_MASK (MNT_UNBINDABLE)
#define MNT_PROPAGATION_MASK (MNT_SHARED | MNT_UNBINDABLE)
#define MNT_INTERNAL 0x4000
struct vfsmount {
struct list_head mnt_hash;
@ -123,7 +134,6 @@ extern int do_add_mount(struct vfsmount *newmnt, struct path *path,
extern void mark_mounts_for_expiry(struct list_head *mounts);
extern spinlock_t vfsmount_lock;
extern dev_t name_to_dev_t(char *name);
#endif /* _LINUX_MOUNT_H */

4
init/do_mounts_initrd.c
View File

@ -30,11 +30,7 @@ static int __init do_linuxrc(void * shell)
extern char * envp_init[];
sys_close(old_fd);sys_close(root_fd);
sys_close(0);sys_close(1);sys_close(2);
sys_setsid();
(void) sys_open("/dev/console",O_RDWR,0);
(void) sys_dup(0);
(void) sys_dup(0);
return kernel_execve(shell, argv, envp_init);
}

11
init/main.c
View File

@ -822,11 +822,6 @@ static noinline int init_post(void)
system_state = SYSTEM_RUNNING;
numa_default_policy();
if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
printk(KERN_WARNING "Warning: unable to open an initial console.\n");
(void) sys_dup(0);
(void) sys_dup(0);
current->signal->flags |= SIGNAL_UNKILLABLE;
@ -889,6 +884,12 @@ static int __init kernel_init(void * unused)
do_basic_setup();
/* Open the /dev/console on the rootfs, this should never fail */
if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
printk(KERN_WARNING "Warning: unable to open an initial console.\n");
(void) sys_dup(0);
(void) sys_dup(0);
/*
* check if there is an early userspace init. If yes, let it do all
* the work

120
ipc/mqueue.c
View File

@ -134,7 +134,6 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
init_waitqueue_head(&info->wait_q);
INIT_LIST_HEAD(&info->e_wait_q[0].list);
INIT_LIST_HEAD(&info->e_wait_q[1].list);
info->messages = NULL;
info->notify_owner = NULL;
info->qsize = 0;
info->user = NULL; /* set when all is ok */
@ -146,6 +145,10 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
info->attr.mq_msgsize = attr->mq_msgsize;
}
mq_msg_tblsz = info->attr.mq_maxmsg * sizeof(struct msg_msg *);
info->messages = kmalloc(mq_msg_tblsz, GFP_KERNEL);
if (!info->messages)
goto out_inode;
mq_bytes = (mq_msg_tblsz +
(info->attr.mq_maxmsg * info->attr.mq_msgsize));
@ -154,18 +157,12 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
u->mq_bytes + mq_bytes >
p->signal->rlim[RLIMIT_MSGQUEUE].rlim_cur) {
spin_unlock(&mq_lock);
kfree(info->messages);
goto out_inode;
}
u->mq_bytes += mq_bytes;
spin_unlock(&mq_lock);
info->messages = kmalloc(mq_msg_tblsz, GFP_KERNEL);
if (!info->messages) {
spin_lock(&mq_lock);
u->mq_bytes -= mq_bytes;
spin_unlock(&mq_lock);
goto out_inode;
}
/* all is ok */
info->user = get_uid(u);
} else if (S_ISDIR(mode)) {
@ -187,7 +184,7 @@ static int mqueue_fill_super(struct super_block *sb, void *data, int silent)
{
struct inode *inode;
struct ipc_namespace *ns = data;
int error = 0;
int error;
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
@ -205,7 +202,9 @@ static int mqueue_fill_super(struct super_block *sb, void *data, int silent)
if (!sb->s_root) {
iput(inode);
error = -ENOMEM;
goto out;
}
error = 0;
out:
return error;
@ -264,8 +263,9 @@ static void mqueue_delete_inode(struct inode *inode)
clear_inode(inode);
mq_bytes = (info->attr.mq_maxmsg * sizeof(struct msg_msg *) +
(info->attr.mq_maxmsg * info->attr.mq_msgsize));
/* Total amount of bytes accounted for the mqueue */
mq_bytes = info->attr.mq_maxmsg * (sizeof(struct msg_msg *)
+ info->attr.mq_msgsize);
user = info->user;
if (user) {
spin_lock(&mq_lock);
@ -604,8 +604,8 @@ static int mq_attr_ok(struct ipc_namespace *ipc_ns, struct mq_attr *attr)
/* check for overflow */
if (attr->mq_msgsize > ULONG_MAX/attr->mq_maxmsg)
return 0;
if ((unsigned long)(attr->mq_maxmsg * attr->mq_msgsize) +
(attr->mq_maxmsg * sizeof (struct msg_msg *)) <
if ((unsigned long)(attr->mq_maxmsg * (attr->mq_msgsize
+ sizeof (struct msg_msg *))) <
(unsigned long)(attr->mq_maxmsg * attr->mq_msgsize))
return 0;
return 1;
@ -623,9 +623,10 @@ static struct file *do_create(struct ipc_namespace *ipc_ns, struct dentry *dir,
int ret;
if (attr) {
ret = -EINVAL;
if (!mq_attr_ok(ipc_ns, attr))
if (!mq_attr_ok(ipc_ns, attr)) {
ret = -EINVAL;
goto out;
}
/* store for use during create */
dentry->d_fsdata = attr;
}
@ -659,24 +660,28 @@ out:
static struct file *do_open(struct ipc_namespace *ipc_ns,
struct dentry *dentry, int oflag)
{
int ret;
const struct cred *cred = current_cred();
static const int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
MAY_READ | MAY_WRITE };
if ((oflag & O_ACCMODE) == (O_RDWR | O_WRONLY)) {
dput(dentry);
mntput(ipc_ns->mq_mnt);
return ERR_PTR(-EINVAL);
ret = -EINVAL;
goto err;
}
if (inode_permission(dentry->d_inode, oflag2acc[oflag & O_ACCMODE])) {
dput(dentry);
mntput(ipc_ns->mq_mnt);
return ERR_PTR(-EACCES);
ret = -EACCES;
goto err;
}
return dentry_open(dentry, ipc_ns->mq_mnt, oflag, cred);
err:
dput(dentry);
mntput(ipc_ns->mq_mnt);
return ERR_PTR(ret);
}
SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, mode_t, mode,
@ -705,16 +710,17 @@ SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, mode_t, mode,
dentry = lookup_one_len(name, ipc_ns->mq_mnt->mnt_root, strlen(name));
if (IS_ERR(dentry)) {
error = PTR_ERR(dentry);
goto out_err;
goto out_putfd;
}
mntget(ipc_ns->mq_mnt);
if (oflag & O_CREAT) {
if (dentry->d_inode) { /* entry already exists */
audit_inode(name, dentry);
error = -EEXIST;
if (oflag & O_EXCL)
if (oflag & O_EXCL) {
error = -EEXIST;
goto out;
}
filp = do_open(ipc_ns, dentry, oflag);
} else {
filp = do_create(ipc_ns, ipc_ns->mq_mnt->mnt_root,
@ -722,9 +728,10 @@ SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, mode_t, mode,
u_attr ? &attr : NULL);
}
} else {
error = -ENOENT;
if (!dentry->d_inode)
if (!dentry->d_inode) {
error = -ENOENT;
goto out;
}
audit_inode(name, dentry);
filp = do_open(ipc_ns, dentry, oflag);
}
@ -742,7 +749,6 @@ out:
mntput(ipc_ns->mq_mnt);
out_putfd:
put_unused_fd(fd);
out_err:
fd = error;
out_upsem:
mutex_unlock(&ipc_ns->mq_mnt->mnt_root->d_inode->i_mutex);
@ -872,19 +878,24 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
audit_mq_sendrecv(mqdes, msg_len, msg_prio, p);
timeout = prepare_timeout(p);
ret = -EBADF;
filp = fget(mqdes);
if (unlikely(!filp))
if (unlikely(!filp)) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations))
if (unlikely(filp->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
info = MQUEUE_I(inode);
audit_inode(NULL, filp->f_path.dentry);
if (unlikely(!(filp->f_mode & FMODE_WRITE)))
if (unlikely(!(filp->f_mode & FMODE_WRITE))) {
ret = -EBADF;
goto out_fput;
}
if (unlikely(msg_len > info->attr.mq_msgsize)) {
ret = -EMSGSIZE;
@ -961,19 +972,24 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
audit_mq_sendrecv(mqdes, msg_len, 0, p);
timeout = prepare_timeout(p);
ret = -EBADF;
filp = fget(mqdes);
if (unlikely(!filp))
if (unlikely(!filp)) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations))
if (unlikely(filp->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
info = MQUEUE_I(inode);
audit_inode(NULL, filp->f_path.dentry);
if (unlikely(!(filp->f_mode & FMODE_READ)))
if (unlikely(!(filp->f_mode & FMODE_READ))) {
ret = -EBADF;
goto out_fput;
}
/* checks if buffer is big enough */
if (unlikely(msg_len < info->attr.mq_msgsize)) {
@ -1063,13 +1079,14 @@ SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
/* create the notify skb */
nc = alloc_skb(NOTIFY_COOKIE_LEN, GFP_KERNEL);
ret = -ENOMEM;
if (!nc)
if (!nc) {
ret = -ENOMEM;
goto out;
ret = -EFAULT;
}
if (copy_from_user(nc->data,
notification.sigev_value.sival_ptr,
NOTIFY_COOKIE_LEN)) {
ret = -EFAULT;
goto out;
}
@ -1078,9 +1095,10 @@ SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
/* and attach it to the socket */
retry:
filp = fget(notification.sigev_signo);
ret = -EBADF;
if (!filp)
if (!filp) {
ret = -EBADF;
goto out;
}
sock = netlink_getsockbyfilp(filp);
fput(filp);
if (IS_ERR(sock)) {
@ -1092,7 +1110,7 @@ retry:
timeo = MAX_SCHEDULE_TIMEOUT;
ret = netlink_attachskb(sock, nc, &timeo, NULL);
if (ret == 1)
goto retry;
goto retry;
if (ret) {
sock = NULL;
nc = NULL;
@ -1101,14 +1119,17 @@ retry:
}
}
ret = -EBADF;
filp = fget(mqdes);
if (!filp)
if (!filp) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations))
if (unlikely(filp->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
info = MQUEUE_I(inode);
ret = 0;
@ -1171,14 +1192,17 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
return -EINVAL;
}
ret = -EBADF;
filp = fget(mqdes);
if (!filp)
if (!filp) {
ret = -EBADF;
goto out;
}
inode = filp->f_path.dentry->d_inode;
if (unlikely(filp->f_op != &mqueue_file_operations))
if (unlikely(filp->f_op != &mqueue_file_operations)) {
ret = -EBADF;
goto out_fput;
}
info = MQUEUE_I(inode);
spin_lock(&info->lock);
@ -1272,7 +1296,7 @@ static int __init init_mqueue_fs(void)
if (mqueue_inode_cachep == NULL)
return -ENOMEM;
/* ignore failues - they are not fatal */
/* ignore failures - they are not fatal */
mq_sysctl_table = mq_register_sysctl_table();
error = register_filesystem(&mqueue_fs_type);

104
kernel/audit_tree.c
View File

@ -548,6 +548,11 @@ int audit_remove_tree_rule(struct audit_krule *rule)
return 0;
}
static int compare_root(struct vfsmount *mnt, void *arg)
{
return mnt->mnt_root->d_inode == arg;
}
void audit_trim_trees(void)
{
struct list_head cursor;
@ -559,7 +564,6 @@ void audit_trim_trees(void)
struct path path;
struct vfsmount *root_mnt;
struct node *node;
struct list_head list;
int err;
tree = container_of(cursor.next, struct audit_tree, list);
@ -577,24 +581,16 @@ void audit_trim_trees(void)
if (!root_mnt)
goto skip_it;
list_add_tail(&list, &root_mnt->mnt_list);
spin_lock(&hash_lock);
list_for_each_entry(node, &tree->chunks, list) {
struct audit_chunk *chunk = find_chunk(node);
struct inode *inode = chunk->watch.inode;
struct vfsmount *mnt;
struct inode *inode = find_chunk(node)->watch.inode;
node->index |= 1U<<31;
list_for_each_entry(mnt, &list, mnt_list) {
if (mnt->mnt_root->d_inode == inode) {
node->index &= ~(1U<<31);
break;
}
}
if (iterate_mounts(compare_root, inode, root_mnt))
node->index &= ~(1U<<31);
}
spin_unlock(&hash_lock);
trim_marked(tree);
put_tree(tree);
list_del_init(&list);
drop_collected_mounts(root_mnt);
skip_it:
mutex_lock(&audit_filter_mutex);
@ -603,22 +599,6 @@ skip_it:
mutex_unlock(&audit_filter_mutex);
}
static int is_under(struct vfsmount *mnt, struct dentry *dentry,
struct path *path)
{
if (mnt != path->mnt) {
for (;;) {
if (mnt->mnt_parent == mnt)
return 0;
if (mnt->mnt_parent == path->mnt)
break;
mnt = mnt->mnt_parent;
}
dentry = mnt->mnt_mountpoint;
}
return is_subdir(dentry, path->dentry);
}
int audit_make_tree(struct audit_krule *rule, char *pathname, u32 op)
{
@ -638,13 +618,17 @@ void audit_put_tree(struct audit_tree *tree)
put_tree(tree);
}
static int tag_mount(struct vfsmount *mnt, void *arg)
{
return tag_chunk(mnt->mnt_root->d_inode, arg);
}
/* called with audit_filter_mutex */
int audit_add_tree_rule(struct audit_krule *rule)
{
struct audit_tree *seed = rule->tree, *tree;
struct path path;
struct vfsmount *mnt, *p;
struct list_head list;
struct vfsmount *mnt;
int err;
list_for_each_entry(tree, &tree_list, list) {
@ -670,16 +654,9 @@ int audit_add_tree_rule(struct audit_krule *rule)
err = -ENOMEM;
goto Err;
}
list_add_tail(&list, &mnt->mnt_list);
get_tree(tree);
list_for_each_entry(p, &list, mnt_list) {
err = tag_chunk(p->mnt_root->d_inode, tree);
if (err)
break;
}
list_del(&list);
err = iterate_mounts(tag_mount, tree, mnt);
drop_collected_mounts(mnt);
if (!err) {
@ -714,31 +691,23 @@ int audit_tag_tree(char *old, char *new)
{
struct list_head cursor, barrier;
int failed = 0;
struct path path;
struct path path1, path2;
struct vfsmount *tagged;
struct list_head list;
struct vfsmount *mnt;
struct dentry *dentry;
int err;
err = kern_path(new, 0, &path);
err = kern_path(new, 0, &path2);
if (err)
return err;
tagged = collect_mounts(&path);
path_put(&path);
tagged = collect_mounts(&path2);
path_put(&path2);
if (!tagged)
return -ENOMEM;
err = kern_path(old, 0, &path);
err = kern_path(old, 0, &path1);
if (err) {
drop_collected_mounts(tagged);
return err;
}
mnt = mntget(path.mnt);
dentry = dget(path.dentry);
path_put(&path);
list_add_tail(&list, &tagged->mnt_list);
mutex_lock(&audit_filter_mutex);
list_add(&barrier, &tree_list);
@ -746,7 +715,7 @@ int audit_tag_tree(char *old, char *new)
while (cursor.next != &tree_list) {
struct audit_tree *tree;
struct vfsmount *p;
int good_one = 0;
tree = container_of(cursor.next, struct audit_tree, list);
get_tree(tree);
@ -754,30 +723,19 @@ int audit_tag_tree(char *old, char *new)
list_add(&cursor, &tree->list);
mutex_unlock(&audit_filter_mutex);
err = kern_path(tree->pathname, 0, &path);
if (err) {
err = kern_path(tree->pathname, 0, &path2);
if (!err) {
good_one = path_is_under(&path1, &path2);
path_put(&path2);
}
if (!good_one) {
put_tree(tree);
mutex_lock(&audit_filter_mutex);
continue;
}
spin_lock(&vfsmount_lock);
if (!is_under(mnt, dentry, &path)) {
spin_unlock(&vfsmount_lock);
path_put(&path);
put_tree(tree);
mutex_lock(&audit_filter_mutex);
continue;
}
spin_unlock(&vfsmount_lock);
path_put(&path);
list_for_each_entry(p, &list, mnt_list) {
failed = tag_chunk(p->mnt_root->d_inode, tree);
if (failed)
break;
}
failed = iterate_mounts(tag_mount, tree, tagged);
if (failed) {
put_tree(tree);
mutex_lock(&audit_filter_mutex);
@ -818,10 +776,8 @@ int audit_tag_tree(char *old, char *new)
}
list_del(&barrier);
list_del(&cursor);
list_del(&list);
mutex_unlock(&audit_filter_mutex);
dput(dentry);
mntput(mnt);
path_put(&path1);
drop_collected_mounts(tagged);
return failed;
}

7
kernel/auditsc.c
View File

@ -1988,7 +1988,6 @@ void __audit_inode(const char *name, const struct dentry *dentry)
/**
* audit_inode_child - collect inode info for created/removed objects
* @dname: inode's dentry name
* @dentry: dentry being audited
* @parent: inode of dentry parent
*
@ -2000,13 +1999,14 @@ void __audit_inode(const char *name, const struct dentry *dentry)
* must be hooked prior, in order to capture the target inode during
* unsuccessful attempts.
*/
void __audit_inode_child(const char *dname, const struct dentry *dentry,
void __audit_inode_child(const struct dentry *dentry,
const struct inode *parent)
{
int idx;
struct audit_context *context = current->audit_context;
const char *found_parent = NULL, *found_child = NULL;
const struct inode *inode = dentry->d_inode;
const char *dname = dentry->d_name.name;
int dirlen = 0;
if (!context->in_syscall)
@ -2014,9 +2014,6 @@ void __audit_inode_child(const char *dname, const struct dentry *dentry,
if (inode)
handle_one(inode);
/* determine matching parent */
if (!dname)
goto add_names;
/* parent is more likely, look for it first */
for (idx = 0; idx < context->name_count; idx++) {

7
kernel/sysctl_binary.c
View File

@ -1331,7 +1331,7 @@ static ssize_t binary_sysctl(const int *name, int nlen,
ssize_t result;
char *pathname;
int flags;
int acc_mode, fmode;
int acc_mode;
pathname = sysctl_getname(name, nlen, &table);
result = PTR_ERR(pathname);
@ -1342,15 +1342,12 @@ static ssize_t binary_sysctl(const int *name, int nlen,
if (oldval && oldlen && newval && newlen) {
flags = O_RDWR;
acc_mode = MAY_READ | MAY_WRITE;
fmode = FMODE_READ | FMODE_WRITE;
} else if (newval && newlen) {
flags = O_WRONLY;
acc_mode = MAY_WRITE;
fmode = FMODE_WRITE;
} else if (oldval && oldlen) {
flags = O_RDONLY;
acc_mode = MAY_READ;
fmode = FMODE_READ;
} else {
result = 0;
goto out_putname;
@ -1361,7 +1358,7 @@ static ssize_t binary_sysctl(const int *name, int nlen,
if (result)
goto out_putname;
result = may_open(&nd.path, acc_mode, fmode);
result = may_open(&nd.path, acc_mode, flags);
if (result)
goto out_putpath;

2
mm/filemap.c
View File

@ -1117,7 +1117,7 @@ readpage:
if (!PageUptodate(page)) {
if (page->mapping == NULL) {
/*
* invalidate_inode_pages got it
* invalidate_mapping_pages got it
*/
unlock_page(page);
page_cache_release(page);

9
net/sunrpc/rpc_pipe.c
View File

@ -999,19 +999,14 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
inode = rpc_get_inode(sb, S_IFDIR | 0755);
if (!inode)
return -ENOMEM;
root = d_alloc_root(inode);
sb->s_root = root = d_alloc_root(inode);
if (!root) {
iput(inode);
return -ENOMEM;
}
if (rpc_populate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF, NULL))
goto out;
sb->s_root = root;
return -ENOMEM;
return 0;
out:
d_genocide(root);
dput(root);
return -ENOMEM;
}
static int

2
security/smack/smack_lsm.c
View File

@ -387,7 +387,7 @@ static int smack_sb_umount(struct vfsmount *mnt, int flags)
struct smk_audit_info ad;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_FS);
smk_ad_setfield_u_fs_path_dentry(&ad, mnt->mnt_mountpoint);
smk_ad_setfield_u_fs_path_dentry(&ad, mnt->mnt_root);
smk_ad_setfield_u_fs_path_mnt(&ad, mnt);
sbp = mnt->mnt_sb->s_security;

23
security/tomoyo/realpath.c
View File

@ -88,29 +88,14 @@ int tomoyo_realpath_from_path2(struct path *path, char *newname,
sp = dentry->d_op->d_dname(dentry, newname + offset,
newname_len - offset);
} else {
/* Taken from d_namespace_path(). */
struct path root;
struct path ns_root = { };
struct path tmp;
struct path ns_root = {.mnt = NULL, .dentry = NULL};
read_lock(&current->fs->lock);
root = current->fs->root;
path_get(&root);
read_unlock(&current->fs->lock);
spin_lock(&vfsmount_lock);
if (root.mnt && root.mnt->mnt_ns)
ns_root.mnt = mntget(root.mnt->mnt_ns->root);
if (ns_root.mnt)
ns_root.dentry = dget(ns_root.mnt->mnt_root);
spin_unlock(&vfsmount_lock);
spin_lock(&dcache_lock);
tmp = ns_root;
sp = __d_path(path, &tmp, newname, newname_len);
/* go to whatever namespace root we are under */
sp = __d_path(path, &ns_root, newname, newname_len);
spin_unlock(&dcache_lock);
path_put(&root);
path_put(&ns_root);
/* Prepend "/proc" prefix if using internal proc vfs mount. */
if (!IS_ERR(sp) && (path->mnt->mnt_parent == path->mnt) &&
if (!IS_ERR(sp) && (path->mnt->mnt_flags & MNT_INTERNAL) &&
(path->mnt->mnt_sb->s_magic == PROC_SUPER_MAGIC)) {
sp -= 5;
if (sp >= newname)