*
*/
-
+#include <linux/err.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/nfs4.h>
#include <linux/file.h>
#include <linux/namei.h>
#include <asm/uaccess.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
#include <linux/crypto.h>
-
+#include <linux/sched.h>
+#include <linux/mount.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
*out = '\0';
}
-int
+__be32
nfs4_make_rec_clidname(char *dname, struct xdr_netobj *clname)
{
struct xdr_netobj cksum;
- struct crypto_tfm *tfm;
- struct scatterlist sg[1];
- int status = nfserr_resource;
+ struct hash_desc desc;
+ struct scatterlist sg;
+ __be32 status = nfserr_resource;
dprintk("NFSD: nfs4_make_rec_clidname for %.*s\n",
clname->len, clname->data);
- tfm = crypto_alloc_tfm("md5", CRYPTO_TFM_REQ_MAY_SLEEP);
- if (tfm == NULL)
- goto out;
- cksum.len = crypto_tfm_alg_digestsize(tfm);
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+ desc.tfm = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
+ if (IS_ERR(desc.tfm))
+ goto out_no_tfm;
+ cksum.len = crypto_hash_digestsize(desc.tfm);
cksum.data = kmalloc(cksum.len, GFP_KERNEL);
if (cksum.data == NULL)
goto out;
- crypto_digest_init(tfm);
- sg[0].page = virt_to_page(clname->data);
- sg[0].offset = offset_in_page(clname->data);
- sg[0].length = clname->len;
+ sg_init_one(&sg, clname->data, clname->len);
- crypto_digest_update(tfm, sg, 1);
- crypto_digest_final(tfm, cksum.data);
+ if (crypto_hash_digest(&desc, &sg, sg.length, cksum.data))
+ goto out;
md5_to_hex(dname, cksum.data);
kfree(cksum.data);
status = nfs_ok;
out:
- crypto_free_tfm(tfm);
+ crypto_free_hash(desc.tfm);
+out_no_tfm:
return status;
}
static void
nfsd4_sync_rec_dir(void)
{
- down(&rec_dir.dentry->d_inode->i_sem);
- nfsd_sync_dir(rec_dir.dentry);
- up(&rec_dir.dentry->d_inode->i_sem);
+ mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
+ nfsd_sync_dir(rec_dir.path.dentry);
+ mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
}
int
nfs4_save_user(&uid, &gid);
/* lock the parent */
- down(&rec_dir.dentry->d_inode->i_sem);
+ mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
- dentry = lookup_one_len(dname, rec_dir.dentry, HEXDIR_LEN-1);
+ dentry = lookup_one_len(dname, rec_dir.path.dentry, HEXDIR_LEN-1);
if (IS_ERR(dentry)) {
status = PTR_ERR(dentry);
goto out_unlock;
dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
goto out_put;
}
- status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU);
+ status = mnt_want_write(rec_dir.path.mnt);
+ if (status)
+ goto out_put;
+ status = vfs_mkdir(rec_dir.path.dentry->d_inode, dentry, S_IRWXU);
+ mnt_drop_write(rec_dir.path.mnt);
out_put:
dput(dentry);
out_unlock:
- up(&rec_dir.dentry->d_inode->i_sem);
+ mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
if (status == 0) {
clp->cl_firststate = 1;
nfsd4_sync_rec_dir();
static int
nfsd4_build_dentrylist(void *arg, const char *name, int namlen,
- loff_t offset, ino_t ino, unsigned int d_type)
+ loff_t offset, u64 ino, unsigned int d_type)
{
struct dentry_list_arg *dla = arg;
struct list_head *dentries = &dla->dentries;
struct dentry_list *child;
if (name && isdotent(name, namlen))
- return nfs_ok;
+ return 0;
dentry = lookup_one_len(name, parent, namlen);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
nfs4_save_user(&uid, &gid);
- filp = dentry_open(dget(dir), mntget(rec_dir.mnt),
- O_RDWR);
+ filp = dentry_open(dget(dir), mntget(rec_dir.path.mnt), O_RDONLY);
status = PTR_ERR(filp);
if (IS_ERR(filp))
goto out;
printk("nfsd4: non-file found in client recovery directory\n");
return -EINVAL;
}
- down(&dir->d_inode->i_sem);
+ mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
status = vfs_unlink(dir->d_inode, dentry);
- up(&dir->d_inode->i_sem);
+ mutex_unlock(&dir->d_inode->i_mutex);
return status;
}
* 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);
- down(&dir->d_inode->i_sem);
+ mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
status = vfs_rmdir(dir->d_inode, dentry);
- up(&dir->d_inode->i_sem);
+ mutex_unlock(&dir->d_inode->i_mutex);
return status;
}
dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name);
- down(&rec_dir.dentry->d_inode->i_sem);
- dentry = lookup_one_len(name, rec_dir.dentry, namlen);
- up(&rec_dir.dentry->d_inode->i_sem);
+ mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
+ dentry = lookup_one_len(name, rec_dir.path.dentry, namlen);
+ mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
if (IS_ERR(dentry)) {
status = PTR_ERR(dentry);
return status;
if (!dentry->d_inode)
goto out;
- status = nfsd4_clear_clid_dir(rec_dir.dentry, dentry);
+ status = nfsd4_clear_clid_dir(rec_dir.path.dentry, dentry);
out:
dput(dentry);
return status;
if (!rec_dir_init || !clp->cl_firststate)
return;
+ status = mnt_want_write(rec_dir.path.mnt);
+ if (status)
+ goto out;
clp->cl_firststate = 0;
nfs4_save_user(&uid, &gid);
status = nfsd4_unlink_clid_dir(clp->cl_recdir, HEXDIR_LEN-1);
nfs4_reset_user(uid, gid);
if (status == 0)
nfsd4_sync_rec_dir();
+ mnt_drop_write(rec_dir.path.mnt);
+out:
if (status)
printk("NFSD: Failed to remove expired client state directory"
" %.*s\n", HEXDIR_LEN, clp->cl_recdir);
int status;
if (nfs4_has_reclaimed_state(child->d_name.name))
- return nfs_ok;
+ return 0;
status = nfsd4_clear_clid_dir(parent, child);
if (status)
printk("failed to remove client recovery directory %s\n",
child->d_name.name);
/* Keep trying, success or failure: */
- return nfs_ok;
+ return 0;
}
void
if (!rec_dir_init)
return;
- status = nfsd4_list_rec_dir(rec_dir.dentry, purge_old);
+ status = mnt_want_write(rec_dir.path.mnt);
+ if (status)
+ goto out;
+ status = nfsd4_list_rec_dir(rec_dir.path.dentry, purge_old);
if (status == 0)
nfsd4_sync_rec_dir();
+ mnt_drop_write(rec_dir.path.mnt);
+out:
if (status)
printk("nfsd4: failed to purge old clients from recovery"
- " directory %s\n", rec_dir.dentry->d_name.name);
- return;
+ " directory %s\n", rec_dir.path.dentry->d_name.name);
}
static int
printk("nfsd4: illegal name %s in recovery directory\n",
child->d_name.name);
/* Keep trying; maybe the others are OK: */
- return nfs_ok;
+ return 0;
}
nfs4_client_to_reclaim(child->d_name.name);
- return nfs_ok;
+ return 0;
}
int
nfsd4_recdir_load(void) {
int status;
- status = nfsd4_list_rec_dir(rec_dir.dentry, load_recdir);
+ status = nfsd4_list_rec_dir(rec_dir.path.dentry, load_recdir);
if (status)
printk("nfsd4: failed loading clients from recovery"
- " directory %s\n", rec_dir.dentry->d_name.name);
+ " directory %s\n", rec_dir.path.dentry->d_name.name);
return status;
}
nfs4_save_user(&uid, &gid);
- status = path_lookup(rec_dirname, LOOKUP_FOLLOW, &rec_dir);
- if (status == -ENOENT)
- printk("NFSD: recovery directory %s doesn't exist\n",
+ status = path_lookup(rec_dirname, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
+ &rec_dir);
+ if (status)
+ printk("NFSD: unable to find recovery directory %s\n",
rec_dirname);
if (!status)
if (!rec_dir_init)
return;
rec_dir_init = 0;
- path_release(&rec_dir);
+ path_put(&rec_dir.path);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff