#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/namei.h>
-#include <linux/quotaops.h>
#include <linux/pagemap.h>
#include <linux/fsnotify.h>
#include <linux/personality.h>
static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
{
dput(nd->path.dentry);
- if (nd->path.mnt != path->mnt)
+ if (nd->path.mnt != path->mnt) {
mntput(nd->path.mnt);
- nd->path.mnt = path->mnt;
+ nd->path.mnt = path->mnt;
+ }
nd->path.dentry = path->dentry;
}
error = security_inode_create(dir, dentry, mode);
if (error)
return error;
- vfs_dq_init(dir);
error = dir->i_op->create(dir, dentry, mode, nd);
if (!error)
fsnotify_create(dir, dentry);
}
}
if (!IS_ERR(filp)) {
- if (acc_mode & MAY_WRITE)
- vfs_dq_init(nd->path.dentry->d_inode);
-
if (will_truncate) {
error = handle_truncate(&nd->path);
if (error) {
static struct file *do_last(struct nameidata *nd, struct path *path,
int open_flag, int acc_mode,
- int mode, const char *pathname,
- int *want_dir)
+ int mode, const char *pathname)
{
struct dentry *dir = nd->path.dentry;
struct file *filp;
case LAST_DOTDOT:
follow_dotdot(nd);
dir = nd->path.dentry;
+ case LAST_DOT:
if (nd->path.mnt->mnt_sb->s_type->fs_flags & FS_REVAL_DOT) {
if (!dir->d_op->d_revalidate(dir, nd)) {
error = -ESTALE;
}
}
/* fallthrough */
- case LAST_DOT:
case LAST_ROOT:
if (open_flag & O_CREAT)
goto exit;
if (nd->last.name[nd->last.len]) {
if (open_flag & O_CREAT)
goto exit;
- *want_dir = 1;
+ nd->flags |= LOOKUP_DIRECTORY | LOOKUP_FOLLOW;
}
/* just plain open? */
if (path->dentry->d_inode->i_op->follow_link)
return NULL;
error = -ENOTDIR;
- if (*want_dir & !path->dentry->d_inode->i_op->lookup)
- goto exit_dput;
+ if (nd->flags & LOOKUP_DIRECTORY) {
+ if (!path->dentry->d_inode->i_op->lookup)
+ goto exit_dput;
+ }
path_to_nameidata(path, nd);
audit_inode(pathname, nd->path.dentry);
goto ok;
int count = 0;
int flag = open_to_namei_flags(open_flag);
int force_reval = 0;
- int want_dir = open_flag & O_DIRECTORY;
if (!(open_flag & O_CREAT))
mode = 0;
if (open_flag & O_EXCL)
nd.flags |= LOOKUP_EXCL;
}
- filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname, &want_dir);
+ if (open_flag & O_DIRECTORY)
+ nd.flags |= LOOKUP_DIRECTORY;
+ if (!(open_flag & O_NOFOLLOW))
+ nd.flags |= LOOKUP_FOLLOW;
+ filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname);
while (unlikely(!filp)) { /* trailing symlink */
struct path holder;
struct inode *inode = path.dentry->d_inode;
void *cookie;
error = -ELOOP;
/* S_ISDIR part is a temporary automount kludge */
- if ((open_flag & O_NOFOLLOW) && !S_ISDIR(inode->i_mode))
+ if (!(nd.flags & LOOKUP_FOLLOW) && !S_ISDIR(inode->i_mode))
goto exit_dput;
if (count++ == 32)
goto exit_dput;
}
holder = path;
nd.flags &= ~LOOKUP_PARENT;
- filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname, &want_dir);
+ filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname);
if (inode->i_op->put_link)
inode->i_op->put_link(holder.dentry, &nd, cookie);
path_put(&holder);
if (error)
return error;
- vfs_dq_init(dir);
error = dir->i_op->mknod(dir, dentry, mode, dev);
if (!error)
fsnotify_create(dir, dentry);
if (error)
return error;
- vfs_dq_init(dir);
error = dir->i_op->mkdir(dir, dentry, mode);
if (!error)
fsnotify_mkdir(dir, dentry);
if (!dir->i_op->rmdir)
return -EPERM;
- vfs_dq_init(dir);
-
mutex_lock(&dentry->d_inode->i_mutex);
dentry_unhash(dentry);
if (d_mountpoint(dentry))
error = security_inode_rmdir(dir, dentry);
if (!error) {
error = dir->i_op->rmdir(dir, dentry);
- if (!error)
+ if (!error) {
dentry->d_inode->i_flags |= S_DEAD;
+ dont_mount(dentry);
+ }
}
}
mutex_unlock(&dentry->d_inode->i_mutex);
if (!dir->i_op->unlink)
return -EPERM;
- vfs_dq_init(dir);
-
mutex_lock(&dentry->d_inode->i_mutex);
if (d_mountpoint(dentry))
error = -EBUSY;
if (!error) {
error = dir->i_op->unlink(dir, dentry);
if (!error)
- dentry->d_inode->i_flags |= S_DEAD;
+ dont_mount(dentry);
}
}
mutex_unlock(&dentry->d_inode->i_mutex);
if (error)
return error;
- vfs_dq_init(dir);
error = dir->i_op->symlink(dir, dentry, oldname);
if (!error)
fsnotify_create(dir, dentry);
return error;
mutex_lock(&inode->i_mutex);
- vfs_dq_init(dir);
error = dir->i_op->link(old_dentry, dir, new_dentry);
mutex_unlock(&inode->i_mutex);
if (!error)
* e) conversion from fhandle to dentry may come in the wrong moment - when
* we are removing the target. Solution: we will have to grab ->i_mutex
* in the fhandle_to_dentry code. [FIXME - current nfsfh.c relies on
- * ->i_mutex on parents, which works but leads to some truely excessive
+ * ->i_mutex on parents, which works but leads to some truly excessive
* locking].
*/
static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
return error;
target = new_dentry->d_inode;
- if (target) {
+ if (target)
mutex_lock(&target->i_mutex);
- dentry_unhash(new_dentry);
- }
if (d_mountpoint(old_dentry)||d_mountpoint(new_dentry))
error = -EBUSY;
- else
+ else {
+ if (target)
+ dentry_unhash(new_dentry);
error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
+ }
if (target) {
- if (!error)
+ if (!error) {
target->i_flags |= S_DEAD;
+ dont_mount(new_dentry);
+ }
mutex_unlock(&target->i_mutex);
if (d_unhashed(new_dentry))
d_rehash(new_dentry);
error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
if (!error) {
if (target)
- target->i_flags |= S_DEAD;
+ dont_mount(new_dentry);
if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
d_move(old_dentry, new_dentry);
}
if (!old_dir->i_op->rename)
return -EPERM;
- vfs_dq_init(old_dir);
- vfs_dq_init(new_dir);
-
old_name = fsnotify_oldname_init(old_dentry->d_name.name);
if (is_dir)