typedef int (recdir_func)(struct dentry *, struct dentry *);
-struct dentry_list {
- struct dentry *dentry;
+struct name_list {
+ char name[HEXDIR_LEN];
struct list_head list;
};
-struct dentry_list_arg {
- struct list_head dentries;
- struct dentry *parent;
-};
-
static int
-nfsd4_build_dentrylist(void *arg, const char *name, int namlen,
+nfsd4_build_namelist(void *arg, const char *name, int namlen,
loff_t offset, u64 ino, unsigned int d_type)
{
- struct dentry_list_arg *dla = arg;
- struct list_head *dentries = &dla->dentries;
- struct dentry *parent = dla->parent;
- struct dentry *dentry;
- struct dentry_list *child;
+ struct list_head *names = arg;
+ struct name_list *entry;
- if (name && isdotent(name, namlen))
+ if (namlen != HEXDIR_LEN - 1)
return 0;
- dentry = lookup_one_len(name, parent, namlen);
- if (IS_ERR(dentry))
- return PTR_ERR(dentry);
- child = kmalloc(sizeof(*child), GFP_KERNEL);
- if (child == NULL)
+ entry = kmalloc(sizeof(struct name_list), GFP_KERNEL);
+ if (entry == NULL)
return -ENOMEM;
- child->dentry = dentry;
- list_add(&child->list, dentries);
+ memcpy(entry->name, name, HEXDIR_LEN - 1);
+ entry->name[HEXDIR_LEN - 1] = '\0';
+ list_add(&entry->list, names);
return 0;
}
{
const struct cred *original_cred;
struct file *filp;
- struct dentry_list_arg dla = {
- .parent = dir,
- };
- struct list_head *dentries = &dla.dentries;
- struct dentry_list *child;
+ LIST_HEAD(names);
+ struct name_list *entry;
+ struct dentry *dentry;
int status;
if (!rec_dir_init)
status = nfs4_save_creds(&original_cred);
if (status < 0)
return status;
- INIT_LIST_HEAD(dentries);
filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY,
current_cred());
status = PTR_ERR(filp);
if (IS_ERR(filp))
goto out;
- INIT_LIST_HEAD(dentries);
- status = vfs_readdir(filp, nfsd4_build_dentrylist, &dla);
+ status = vfs_readdir(filp, nfsd4_build_namelist, &names);
fput(filp);
- while (!list_empty(dentries)) {
- child = list_entry(dentries->next, struct dentry_list, list);
- status = f(dir, child->dentry);
+ mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
+ while (!list_empty(&names)) {
+ entry = list_entry(names.next, struct name_list, list);
+
+ dentry = lookup_one_len(entry->name, dir, HEXDIR_LEN-1);
+ if (IS_ERR(dentry)) {
+ status = PTR_ERR(dentry);
+ break;
+ }
+ status = f(dir, dentry);
+ dput(dentry);
if (status)
- goto out;
- list_del(&child->list);
- dput(child->dentry);
- kfree(child);
+ break;
+ list_del(&entry->list);
+ kfree(entry);
}
+ mutex_unlock(&dir->d_inode->i_mutex);
out:
- while (!list_empty(dentries)) {
- child = list_entry(dentries->next, struct dentry_list, list);
- list_del(&child->list);
- dput(child->dentry);
- kfree(child);
+ while (!list_empty(&names)) {
+ entry = list_entry(names.next, struct name_list, list);
+ list_del(&entry->list);
+ kfree(entry);
}
nfs4_reset_creds(original_cred);
return status;
}
static int
-nfsd4_remove_clid_file(struct dentry *dir, struct dentry *dentry)
-{
- int status;
-
- if (!S_ISREG(dir->d_inode->i_mode)) {
- printk("nfsd4: non-file found in client recovery directory\n");
- return -EINVAL;
- }
- mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
- status = vfs_unlink(dir->d_inode, dentry);
- mutex_unlock(&dir->d_inode->i_mutex);
- return status;
-}
-
-static int
-nfsd4_clear_clid_dir(struct dentry *dir, struct dentry *dentry)
-{
- int status;
-
- /* For now this directory should already be empty, but we empty it of
- * any regular files anyway, just in case the directory was created by
- * a kernel from the future.... */
- nfsd4_list_rec_dir(dentry, nfsd4_remove_clid_file);
- mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
- status = vfs_rmdir(dir->d_inode, dentry);
- mutex_unlock(&dir->d_inode->i_mutex);
- return status;
-}
-
-static int
nfsd4_unlink_clid_dir(char *name, int namlen)
{
struct dentry *dentry;
dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name);
- mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
+ mutex_lock_nested(&rec_dir.dentry->d_inode->i_mutex, I_MUTEX_PARENT);
dentry = lookup_one_len(name, rec_dir.dentry, namlen);
- mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
if (IS_ERR(dentry)) {
status = PTR_ERR(dentry);
- return status;
+ goto out_unlock;
}
status = -ENOENT;
if (!dentry->d_inode)
goto out;
-
- status = nfsd4_clear_clid_dir(rec_dir.dentry, dentry);
+ status = vfs_rmdir(rec_dir.dentry->d_inode, dentry);
out:
dput(dentry);
+out_unlock:
+ mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
return status;
}
{
int status;
- if (nfs4_has_reclaimed_state(child->d_name.name))
+ /* note: we currently use this path only for minorversion 0 */
+ if (nfs4_has_reclaimed_state(child->d_name.name, false))
return 0;
- status = nfsd4_clear_clid_dir(parent, child);
+ status = vfs_rmdir(parent->d_inode, child);
if (status)
printk("failed to remove client recovery directory %s\n",
child->d_name.name);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff