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

Browse source 
Pull vfs pile (part one) from Al Viro:
 "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent
  locking violations, etc.

  The most visible changes here are death of FS_REVAL_DOT (replaced with
  "has ->d_weak_revalidate()") and a new helper getting from struct file
  to inode.  Some bits of preparation to xattr method interface changes.

  Misc patches by various people sent this cycle *and* ocfs2 fixes from
  several cycles ago that should've been upstream right then.

  PS: the next vfs pile will be xattr stuff."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits)
  saner proc_get_inode() calling conventions
  proc: avoid extra pde_put() in proc_fill_super()
  fs: change return values from -EACCES to -EPERM
  fs/exec.c: make bprm_mm_init() static
  ocfs2/dlm: use GFP_ATOMIC inside a spin_lock
  ocfs2: fix possible use-after-free with AIO
  ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path
  get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero
  target: writev() on single-element vector is pointless
  export kernel_write(), convert open-coded instances
  fs: encode_fh: return FILEID_INVALID if invalid fid_type
  kill f_vfsmnt
  vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op
  nfsd: handle vfs_getattr errors in acl protocol
  switch vfs_getattr() to struct path
  default SET_PERSONALITY() in linux/elf.h
  ceph: prepopulate inodes only when request is aborted
  d_hash_and_lookup(): export, switch open-coded instances
  9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate()
  9p: split dropping the acls from v9fs_set_create_acl()
  ...
This commit is contained in:
Linus Torvalds 2013-02-26 20:16:07 -08:00
commit d895cb1af1
383 changed files with 1276 additions and 1423 deletions
Download patch file Download diff file Expand all files Collapse all files

45
fs/proc/base.c
View file

@ -383,7 +383,7 @@ static int lstats_open(struct inode *inode, struct file *file)
static ssize_t lstats_write(struct file *file, const char __user *buf,
size_t count, loff_t *offs)
{
struct task_struct *task = get_proc_task(file->f_dentry->d_inode);
struct task_struct *task = get_proc_task(file_inode(file));
if (!task)
return -ESRCH;
@ -602,7 +602,7 @@ static const struct inode_operations proc_def_inode_operations = {
static ssize_t proc_info_read(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
struct inode * inode = file_inode(file);
unsigned long page;
ssize_t length;
struct task_struct *task = get_proc_task(inode);
@ -668,7 +668,7 @@ static const struct file_operations proc_single_file_operations = {
static int __mem_open(struct inode *inode, struct file *file, unsigned int mode)
{
struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
struct task_struct *task = get_proc_task(file_inode(file));
struct mm_struct *mm;
if (!task)
@ -869,7 +869,7 @@ static const struct file_operations proc_environ_operations = {
static ssize_t oom_adj_read(struct file *file, char __user *buf, size_t count,
loff_t *ppos)
{
struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
struct task_struct *task = get_proc_task(file_inode(file));
char buffer[PROC_NUMBUF];
int oom_adj = OOM_ADJUST_MIN;
size_t len;
@ -916,7 +916,7 @@ static ssize_t oom_adj_write(struct file *file, const char __user *buf,
goto out;
}
task = get_proc_task(file->f_path.dentry->d_inode);
task = get_proc_task(file_inode(file));
if (!task) {
err = -ESRCH;
goto out;
@ -976,7 +976,7 @@ static const struct file_operations proc_oom_adj_operations = {
static ssize_t oom_score_adj_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
struct task_struct *task = get_proc_task(file_inode(file));
char buffer[PROC_NUMBUF];
short oom_score_adj = OOM_SCORE_ADJ_MIN;
unsigned long flags;
@ -1019,7 +1019,7 @@ static ssize_t oom_score_adj_write(struct file *file, const char __user *buf,
goto out;
}
task = get_proc_task(file->f_path.dentry->d_inode);
task = get_proc_task(file_inode(file));
if (!task) {
err = -ESRCH;
goto out;
@ -1067,7 +1067,7 @@ static const struct file_operations proc_oom_score_adj_operations = {
static ssize_t proc_loginuid_read(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
struct inode * inode = file_inode(file);
struct task_struct *task = get_proc_task(inode);
ssize_t length;
char tmpbuf[TMPBUFLEN];
@ -1084,7 +1084,7 @@ static ssize_t proc_loginuid_read(struct file * file, char __user * buf,
static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
size_t count, loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
struct inode * inode = file_inode(file);
char *page, *tmp;
ssize_t length;
uid_t loginuid;
@ -1142,7 +1142,7 @@ static const struct file_operations proc_loginuid_operations = {
static ssize_t proc_sessionid_read(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
struct inode * inode = file_inode(file);
struct task_struct *task = get_proc_task(inode);
ssize_t length;
char tmpbuf[TMPBUFLEN];
@ -1165,7 +1165,7 @@ static const struct file_operations proc_sessionid_operations = {
static ssize_t proc_fault_inject_read(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
{
struct task_struct *task = get_proc_task(file->f_dentry->d_inode);
struct task_struct *task = get_proc_task(file_inode(file));
char buffer[PROC_NUMBUF];
size_t len;
int make_it_fail;
@ -1197,7 +1197,7 @@ static ssize_t proc_fault_inject_write(struct file * file,
make_it_fail = simple_strtol(strstrip(buffer), &end, 0);
if (*end)
return -EINVAL;
task = get_proc_task(file->f_dentry->d_inode);
task = get_proc_task(file_inode(file));
if (!task)
return -ESRCH;
task->make_it_fail = make_it_fail;
@ -1237,7 +1237,7 @@ static ssize_t
sched_write(struct file *file, const char __user *buf,
size_t count, loff_t *offset)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct inode *inode = file_inode(file);
struct task_struct *p;
p = get_proc_task(inode);
@ -1288,7 +1288,7 @@ static ssize_t
sched_autogroup_write(struct file *file, const char __user *buf,
size_t count, loff_t *offset)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct inode *inode = file_inode(file);
struct task_struct *p;
char buffer[PROC_NUMBUF];
int nice;
@ -1343,7 +1343,7 @@ static const struct file_operations proc_pid_sched_autogroup_operations = {
static ssize_t comm_write(struct file *file, const char __user *buf,
size_t count, loff_t *offset)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct inode *inode = file_inode(file);
struct task_struct *p;
char buffer[TASK_COMM_LEN];
@ -1711,7 +1711,7 @@ static int map_files_d_revalidate(struct dentry *dentry, unsigned int flags)
return -ECHILD;
if (!capable(CAP_SYS_ADMIN)) {
status = -EACCES;
status = -EPERM;
goto out_notask;
}
@ -1844,7 +1844,7 @@ static struct dentry *proc_map_files_lookup(struct inode *dir,
struct dentry *result;
struct mm_struct *mm;
result = ERR_PTR(-EACCES);
result = ERR_PTR(-EPERM);
if (!capable(CAP_SYS_ADMIN))
goto out;
@ -1900,7 +1900,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
ino_t ino;
int ret;
ret = -EACCES;
ret = -EPERM;
if (!capable(CAP_SYS_ADMIN))
goto out;
@ -2146,7 +2146,7 @@ out_no_task:
static ssize_t proc_pid_attr_read(struct file * file, char __user * buf,
size_t count, loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
struct inode * inode = file_inode(file);
char *p = NULL;
ssize_t length;
struct task_struct *task = get_proc_task(inode);
@ -2167,7 +2167,7 @@ static ssize_t proc_pid_attr_read(struct file * file, char __user * buf,
static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf,
size_t count, loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
struct inode * inode = file_inode(file);
char *page;
ssize_t length;
struct task_struct *task = get_proc_task(inode);
@ -2256,7 +2256,7 @@ static const struct inode_operations proc_attr_dir_inode_operations = {
static ssize_t proc_coredump_filter_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct task_struct *task = get_proc_task(file->f_dentry->d_inode);
struct task_struct *task = get_proc_task(file_inode(file));
struct mm_struct *mm;
char buffer[PROC_NUMBUF];
size_t len;
@ -2308,7 +2308,7 @@ static ssize_t proc_coredump_filter_write(struct file *file,
goto out_no_task;
ret = -ESRCH;
task = get_proc_task(file->f_dentry->d_inode);
task = get_proc_task(file_inode(file));
if (!task)
goto out_no_task;
@ -2618,6 +2618,7 @@ static void proc_flush_task_mnt(struct vfsmount *mnt, pid_t pid, pid_t tgid)
name.name = buf;
name.len = snprintf(buf, sizeof(buf), "%d", pid);
/* no ->d_hash() rejects on procfs */
dentry = d_hash_and_lookup(mnt->mnt_root, &name);
if (dentry) {
shrink_dcache_parent(dentry);

31
fs/proc/generic.c
View file

@ -42,7 +42,7 @@ static ssize_t
__proc_file_read(struct file *file, char __user *buf, size_t nbytes,
loff_t *ppos)
{
struct inode * inode = file->f_path.dentry->d_inode;
struct inode * inode = file_inode(file);
char *page;
ssize_t retval=0;
int eof=0;
@ -188,7 +188,7 @@ static ssize_t
proc_file_read(struct file *file, char __user *buf, size_t nbytes,
loff_t *ppos)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
ssize_t rv = -EIO;
spin_lock(&pde->pde_unload_lock);
@ -209,7 +209,7 @@ static ssize_t
proc_file_write(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
ssize_t rv = -EIO;
if (pde->write_proc) {
@ -412,8 +412,7 @@ static const struct dentry_operations proc_dentry_operations =
struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
struct dentry *dentry)
{
struct inode *inode = NULL;
int error = -ENOENT;
struct inode *inode;
spin_lock(&proc_subdir_lock);
for (de = de->subdir; de ; de = de->next) {
@ -422,22 +421,16 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
if (!memcmp(dentry->d_name.name, de->name, de->namelen)) {
pde_get(de);
spin_unlock(&proc_subdir_lock);
error = -ENOMEM;
inode = proc_get_inode(dir->i_sb, de);
goto out_unlock;
if (!inode)
return ERR_PTR(-ENOMEM);
d_set_d_op(dentry, &proc_dentry_operations);
d_add(dentry, inode);
return NULL;
}
}
spin_unlock(&proc_subdir_lock);
out_unlock:
if (inode) {
d_set_d_op(dentry, &proc_dentry_operations);
d_add(dentry, inode);
return NULL;
}
if (de)
pde_put(de);
return ERR_PTR(error);
return ERR_PTR(-ENOENT);
}
struct dentry *proc_lookup(struct inode *dir, struct dentry *dentry,
@ -460,7 +453,7 @@ int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
{
unsigned int ino;
int i;
struct inode *inode = filp->f_path.dentry->d_inode;
struct inode *inode = file_inode(filp);
int ret = 0;
ino = inode->i_ino;
@ -522,7 +515,7 @@ out:
int proc_readdir(struct file *filp, void *dirent, filldir_t filldir)
{
struct inode *inode = filp->f_path.dentry->d_inode;
struct inode *inode = file_inode(filp);
return proc_readdir_de(PDE(inode), filp, dirent, filldir);
}

43
fs/proc/inode.c
View file

@ -144,7 +144,7 @@ void pde_users_dec(struct proc_dir_entry *pde)
static loff_t proc_reg_llseek(struct file *file, loff_t offset, int whence)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
loff_t rv = -EINVAL;
loff_t (*llseek)(struct file *, loff_t, int);
@ -179,7 +179,7 @@ static loff_t proc_reg_llseek(struct file *file, loff_t offset, int whence)
static ssize_t proc_reg_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
ssize_t rv = -EIO;
ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
@ -201,7 +201,7 @@ static ssize_t proc_reg_read(struct file *file, char __user *buf, size_t count,
static ssize_t proc_reg_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
ssize_t rv = -EIO;
ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
@ -223,7 +223,7 @@ static ssize_t proc_reg_write(struct file *file, const char __user *buf, size_t
static unsigned int proc_reg_poll(struct file *file, struct poll_table_struct *pts)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
unsigned int rv = DEFAULT_POLLMASK;
unsigned int (*poll)(struct file *, struct poll_table_struct *);
@ -245,7 +245,7 @@ static unsigned int proc_reg_poll(struct file *file, struct poll_table_struct *p
static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
long rv = -ENOTTY;
long (*ioctl)(struct file *, unsigned int, unsigned long);
@ -268,7 +268,7 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
#ifdef CONFIG_COMPAT
static long proc_reg_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
long rv = -ENOTTY;
long (*compat_ioctl)(struct file *, unsigned int, unsigned long);
@ -291,7 +291,7 @@ static long proc_reg_compat_ioctl(struct file *file, unsigned int cmd, unsigned
static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma)
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
struct proc_dir_entry *pde = PDE(file_inode(file));
int rv = -EIO;
int (*mmap)(struct file *, struct vm_area_struct *);
@ -445,12 +445,9 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
{
struct inode * inode;
struct inode *inode = iget_locked(sb, de->low_ino);
inode = iget_locked(sb, de->low_ino);
if (!inode)
return NULL;
if (inode->i_state & I_NEW) {
if (inode && (inode->i_state & I_NEW)) {
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
PROC_I(inode)->pde = de;
@ -482,10 +479,12 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
} else
pde_put(de);
return inode;
}
}
int proc_fill_super(struct super_block *s)
{
struct inode *root_inode;
s->s_flags |= MS_NODIRATIME | MS_NOSUID | MS_NOEXEC;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
@ -494,11 +493,17 @@ int proc_fill_super(struct super_block *s)
s->s_time_gran = 1;
pde_get(&proc_root);
s->s_root = d_make_root(proc_get_inode(s, &proc_root));
if (s->s_root)
return 0;
root_inode = proc_get_inode(s, &proc_root);
if (!root_inode) {
printk(KERN_ERR "proc_fill_super: get root inode failed\n");
return -ENOMEM;
}
printk("proc_read_super: get root inode failed\n");
pde_put(&proc_root);
return -ENOMEM;
s->s_root = d_make_root(root_inode);
if (!s->s_root) {
printk(KERN_ERR "proc_fill_super: allocate dentry failed\n");
return -ENOMEM;
}
return 0;
}

2
fs/proc/nommu.c
View file

@ -45,7 +45,7 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
file = region->vm_file;
if (file) {
struct inode *inode = region->vm_file->f_path.dentry->d_inode;
struct inode *inode = file_inode(region->vm_file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
}

2
fs/proc/proc_net.c
View file

@ -163,7 +163,7 @@ static int proc_tgid_net_readdir(struct file *filp, void *dirent,
struct net *net;
ret = -EINVAL;
net = get_proc_task_net(filp->f_path.dentry->d_inode);
net = get_proc_task_net(file_inode(filp));
if (net != NULL) {
ret = proc_readdir_de(net->proc_net, filp, dirent, filldir);
put_net(net);

4
fs/proc/proc_sysctl.c
View file

@ -478,7 +478,7 @@ out:
static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
size_t count, loff_t *ppos, int write)
{
struct inode *inode = filp->f_path.dentry->d_inode;
struct inode *inode = file_inode(filp);
struct ctl_table_header *head = grab_header(inode);
struct ctl_table *table = PROC_I(inode)->sysctl_entry;
ssize_t error;
@ -542,7 +542,7 @@ static int proc_sys_open(struct inode *inode, struct file *filp)
static unsigned int proc_sys_poll(struct file *filp, poll_table *wait)
{
struct inode *inode = filp->f_path.dentry->d_inode;
struct inode *inode = file_inode(filp);
struct ctl_table_header *head = grab_header(inode);
struct ctl_table *table = PROC_I(inode)->sysctl_entry;
unsigned int ret = DEFAULT_POLLMASK;

6
fs/proc/task_mmu.c
View file

@ -271,7 +271,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
const char *name = NULL;
if (file) {
struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
struct inode *inode = file_inode(vma->vm_file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
@ -743,7 +743,7 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
return rv;
if (type < CLEAR_REFS_ALL || type > CLEAR_REFS_MAPPED)
return -EINVAL;
task = get_proc_task(file->f_path.dentry->d_inode);
task = get_proc_task(file_inode(file));
if (!task)
return -ESRCH;
mm = get_task_mm(task);
@ -1015,7 +1015,7 @@ static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask,
static ssize_t pagemap_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct task_struct *task = get_proc_task(file->f_path.dentry->d_inode);
struct task_struct *task = get_proc_task(file_inode(file));
struct mm_struct *mm;
struct pagemapread pm;
int ret = -ESRCH;

2
fs/proc/task_nommu.c
View file

@ -149,7 +149,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
file = vma->vm_file;
if (file) {
struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
struct inode *inode = file_inode(vma->vm_file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT;