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Merge branch 'for-3.1' of git://linux-nfs.org/~bfields/linux

Browse source 
* 'for-3.1' of git://linux-nfs.org/~bfields/linux:
  nfsd: don't break lease on CLAIM_DELEGATE_CUR
  locks: rename lock-manager ops
  nfsd4: update nfsv4.1 implementation notes
  nfsd: turn on reply cache for NFSv4
  nfsd4: call nfsd4_release_compoundargs from pc_release
  nfsd41: Deny new lock before RECLAIM_COMPLETE done
  fs: locks: remove init_once
  nfsd41: check the size of request
  nfsd41: error out when client sets maxreq_sz or maxresp_sz too small
  nfsd4: fix file leak on open_downgrade
  nfsd4: remember to put RW access on stateid destruction
  NFSD: Added TEST_STATEID operation
  NFSD: added FREE_STATEID operation
  svcrpc: fix list-corrupting race on nfsd shutdown
  rpc: allow autoloading of gss mechanisms
  svcauth_unix.c: quiet sparse noise
  svcsock.c: include sunrpc.h to quiet sparse noise
  nfsd: Remove deprecated nfsctl system call and related code.
  NFSD: allow OP_DESTROY_CLIENTID to be only op in COMPOUND

Fix up trivial conflicts in Documentation/feature-removal-schedule.txt
This commit is contained in:
Linus Torvalds 2011-07-25 22:49:19 -07:00
commit 2dad3206db
33 changed files with 559 additions and 1426 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
Documentation/feature-removal-schedule.txt
View file

@ -491,16 +491,6 @@ Who: Wey-Yi Guy <wey-yi.w.guy@intel.com>
----------------------------
What: access to nfsd auth cache through sys_nfsservctl or '.' files
in the 'nfsd' filesystem.
When: 3.0
Why: This is a legacy interface which have been replaced by a more
dynamic cache. Continuing to maintain this interface is an
unnecessary burden.
Who: NeilBrown <neilb@suse.de>
----------------------------
What: Legacy, non-standard chassis intrusion detection interface.
When: June 2011
Why: The adm9240, w83792d and w83793 hardware monitoring drivers have

24
Documentation/filesystems/Locking
View file

@ -338,21 +338,21 @@ fl_release_private: maybe no
----------------------- lock_manager_operations ---------------------------
prototypes:
int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
void (*fl_notify)(struct file_lock *); /* unblock callback */
int (*fl_grant)(struct file_lock *, struct file_lock *, int);
void (*fl_release_private)(struct file_lock *);
void (*fl_break)(struct file_lock *); /* break_lease callback */
int (*fl_change)(struct file_lock **, int);
int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
void (*lm_notify)(struct file_lock *); /* unblock callback */
int (*lm_grant)(struct file_lock *, struct file_lock *, int);
void (*lm_release_private)(struct file_lock *);
void (*lm_break)(struct file_lock *); /* break_lease callback */
int (*lm_change)(struct file_lock **, int);
locking rules:
file_lock_lock may block
fl_compare_owner: yes no
fl_notify: yes no
fl_grant: no no
fl_release_private: maybe no
fl_break: yes no
fl_change yes no
lm_compare_owner: yes no
lm_notify: yes no
lm_grant: no no
lm_release_private: maybe no
lm_break: yes no
lm_change yes no
--------------------------- buffer_head -----------------------------------
prototypes:

33
Documentation/filesystems/nfs/nfs41-server.txt
View file

@ -39,27 +39,17 @@ interoperability problems with future clients. Known issues:
from a linux client are possible, but we aren't really
conformant with the spec (for example, we don't use kerberos
on the backchannel correctly).
- no trunking support: no clients currently take advantage of
trunking, but this is a mandatory feature, and its use is
recommended to clients in a number of places. (E.g. to ensure
timely renewal in case an existing connection's retry timeouts
have gotten too long; see section 8.3 of the RFC.)
Therefore, lack of this feature may cause future clients to
fail.
- Incomplete backchannel support: incomplete backchannel gss
support and no support for BACKCHANNEL_CTL mean that
callbacks (hence delegations and layouts) may not be
available and clients confused by the incomplete
implementation may fail.
- Server reboot recovery is unsupported; if the server reboots,
clients may fail.
- We do not support SSV, which provides security for shared
client-server state (thus preventing unauthorized tampering
with locks and opens, for example). It is mandatory for
servers to support this, though no clients use it yet.
- Mandatory operations which we do not support, such as
DESTROY_CLIENTID, FREE_STATEID, SECINFO_NO_NAME, and
TEST_STATEID, are not currently used by clients, but will be
DESTROY_CLIENTID, are not currently used by clients, but will be
(and the spec recommends their uses in common cases), and
clients should not be expected to know how to recover from the
case where they are not supported. This will eventually cause
@ -69,8 +59,9 @@ In addition, some limitations are inherited from the current NFSv4
implementation:
- Incomplete delegation enforcement: if a file is renamed or
unlinked, a client holding a delegation may continue to
indefinitely allow opens of the file under the old name.
unlinked by a local process, a client holding a delegation may
continue to indefinitely allow opens of the file under the old
name.
The table below, taken from the NFSv4.1 document, lists
the operations that are mandatory to implement (REQ), optional
@ -99,7 +90,7 @@ Operations
+----------------------+------------+--------------+----------------+
| ACCESS | REQ | | Section 18.1 |
NS | BACKCHANNEL_CTL | REQ | | Section 18.33 |
NS | BIND_CONN_TO_SESSION | REQ | | Section 18.34 |
I | BIND_CONN_TO_SESSION | REQ | | Section 18.34 |
| CLOSE | REQ | | Section 18.2 |
| COMMIT | REQ | | Section 18.3 |
| CREATE | REQ | | Section 18.4 |
@ -111,7 +102,7 @@ NS*| DELEGPURGE | OPT | FDELG (REQ) | Section 18.5 |
NS | DESTROY_CLIENTID | REQ | | Section 18.50 |
I | DESTROY_SESSION | REQ | | Section 18.37 |
I | EXCHANGE_ID | REQ | | Section 18.35 |
NS | FREE_STATEID | REQ | | Section 18.38 |
I | FREE_STATEID | REQ | | Section 18.38 |
| GETATTR | REQ | | Section 18.7 |
P | GETDEVICEINFO | OPT | pNFS (REQ) | Section 18.40 |
P | GETDEVICELIST | OPT | pNFS (OPT) | Section 18.41 |
@ -145,14 +136,14 @@ NS*| OPENATTR | OPT | | Section 18.17 |
| RESTOREFH | REQ | | Section 18.27 |
| SAVEFH | REQ | | Section 18.28 |
| SECINFO | REQ | | Section 18.29 |
NS | SECINFO_NO_NAME | REC | pNFS files | Section 18.45, |
I | SECINFO_NO_NAME | REC | pNFS files | Section 18.45, |
| | | layout (REQ) | Section 13.12 |
I | SEQUENCE | REQ | | Section 18.46 |
| SETATTR | REQ | | Section 18.30 |
| SETCLIENTID | MNI | | N/A |
| SETCLIENTID_CONFIRM | MNI | | N/A |
NS | SET_SSV | REQ | | Section 18.47 |
NS | TEST_STATEID | REQ | | Section 18.48 |
I | TEST_STATEID | REQ | | Section 18.48 |
| VERIFY | REQ | | Section 18.31 |
NS*| WANT_DELEGATION | OPT | FDELG (OPT) | Section 18.49 |
| WRITE | REQ | | Section 18.32 |
@ -206,12 +197,6 @@ CREATE_SESSION:
SEQUENCE:
* no support for dynamic slot table renegotiation (optional)
nfsv4.1 COMPOUND rules:
The following cases aren't supported yet:
* Enforcing of NFS4ERR_NOT_ONLY_OP for: BIND_CONN_TO_SESSION, CREATE_SESSION,
DESTROY_CLIENTID, DESTROY_SESSION, EXCHANGE_ID.
* DESTROY_SESSION MUST be the final operation in the COMPOUND request.
Nonstandard compound limitations:
* No support for a sessions fore channel RPC compound that requires both a
ca_maxrequestsize request and a ca_maxresponsesize reply, so we may
@ -219,3 +204,5 @@ Nonstandard compound limitations:
negotiation.
* No more than one IO operation (read, write, readdir) allowed per
compound.
See also http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues.

1
arch/tile/configs/tilegx_defconfig
View file

@ -1479,7 +1479,6 @@ CONFIG_NFS_FSCACHE=y
CONFIG_NFS_USE_KERNEL_DNS=y
# CONFIG_NFS_USE_NEW_IDMAPPER is not set
CONFIG_NFSD=m
CONFIG_NFSD_DEPRECATED=y
CONFIG_NFSD_V2_ACL=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V3_ACL=y

1
fs/Makefile
View file

@ -29,7 +29,6 @@ obj-$(CONFIG_EVENTFD) += eventfd.o
obj-$(CONFIG_AIO) += aio.o
obj-$(CONFIG_FILE_LOCKING) += locks.o
obj-$(CONFIG_COMPAT) += compat.o compat_ioctl.o
obj-$(CONFIG_NFSD_DEPRECATED) += nfsctl.o
obj-$(CONFIG_BINFMT_AOUT) += binfmt_aout.o
obj-$(CONFIG_BINFMT_EM86) += binfmt_em86.o
obj-$(CONFIG_BINFMT_MISC) += binfmt_misc.o

246
fs/compat.c
View file

@ -1675,256 +1675,10 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
}
#endif /* HAVE_SET_RESTORE_SIGMASK */
#if (defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)) && !defined(CONFIG_NFSD_DEPRECATED)
/* Stuff for NFS server syscalls... */
struct compat_nfsctl_svc {
u16 svc32_port;
s32 svc32_nthreads;
};
struct compat_nfsctl_client {
s8 cl32_ident[NFSCLNT_IDMAX+1];
s32 cl32_naddr;
struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
s32 cl32_fhkeytype;
s32 cl32_fhkeylen;
u8 cl32_fhkey[NFSCLNT_KEYMAX];
};
struct compat_nfsctl_export {
char ex32_client[NFSCLNT_IDMAX+1];
char ex32_path[NFS_MAXPATHLEN+1];
compat_dev_t ex32_dev;
compat_ino_t ex32_ino;
compat_int_t ex32_flags;
__compat_uid_t ex32_anon_uid;
__compat_gid_t ex32_anon_gid;
};
struct compat_nfsctl_fdparm {
struct sockaddr gd32_addr;
s8 gd32_path[NFS_MAXPATHLEN+1];
compat_int_t gd32_version;
};
struct compat_nfsctl_fsparm {
struct sockaddr gd32_addr;
s8 gd32_path[NFS_MAXPATHLEN+1];
compat_int_t gd32_maxlen;
};
struct compat_nfsctl_arg {
compat_int_t ca32_version; /* safeguard */
union {
struct compat_nfsctl_svc u32_svc;
struct compat_nfsctl_client u32_client;
struct compat_nfsctl_export u32_export;
struct compat_nfsctl_fdparm u32_getfd;
struct compat_nfsctl_fsparm u32_getfs;
} u;
#define ca32_svc u.u32_svc
#define ca32_client u.u32_client
#define ca32_export u.u32_export
#define ca32_getfd u.u32_getfd
#define ca32_getfs u.u32_getfs
};
union compat_nfsctl_res {
__u8 cr32_getfh[NFS_FHSIZE];
struct knfsd_fh cr32_getfs;
};
static int compat_nfs_svc_trans(struct nfsctl_arg *karg,
struct compat_nfsctl_arg __user *arg)
{
if (!access_ok(VERIFY_READ, &arg->ca32_svc, sizeof(arg->ca32_svc)) ||
get_user(karg->ca_version, &arg->ca32_version) ||
__get_user(karg->ca_svc.svc_port, &arg->ca32_svc.svc32_port) ||
__get_user(karg->ca_svc.svc_nthreads,
&arg->ca32_svc.svc32_nthreads))
return -EFAULT;
return 0;
}
static int compat_nfs_clnt_trans(struct nfsctl_arg *karg,
struct compat_nfsctl_arg __user *arg)
{
if (!access_ok(VERIFY_READ, &arg->ca32_client,
sizeof(arg->ca32_client)) ||
get_user(karg->ca_version, &arg->ca32_version) ||
__copy_from_user(&karg->ca_client.cl_ident[0],
&arg->ca32_client.cl32_ident[0],
NFSCLNT_IDMAX) ||
__get_user(karg->ca_client.cl_naddr,
&arg->ca32_client.cl32_naddr) ||
__copy_from_user(&karg->ca_client.cl_addrlist[0],
&arg->ca32_client.cl32_addrlist[0],
(sizeof(struct in_addr) * NFSCLNT_ADDRMAX)) ||
__get_user(karg->ca_client.cl_fhkeytype,
&arg->ca32_client.cl32_fhkeytype) ||
__get_user(karg->ca_client.cl_fhkeylen,
&arg->ca32_client.cl32_fhkeylen) ||
__copy_from_user(&karg->ca_client.cl_fhkey[0],
&arg->ca32_client.cl32_fhkey[0],
NFSCLNT_KEYMAX))
return -EFAULT;
return 0;
}
static int compat_nfs_exp_trans(struct nfsctl_arg *karg,
struct compat_nfsctl_arg __user *arg)
{
if (!access_ok(VERIFY_READ, &arg->ca32_export,
sizeof(arg->ca32_export)) ||
get_user(karg->ca_version, &arg->ca32_version) ||
__copy_from_user(&karg->ca_export.ex_client[0],
&arg->ca32_export.ex32_client[0],
NFSCLNT_IDMAX) ||
__copy_from_user(&karg->ca_export.ex_path[0],
&arg->ca32_export.ex32_path[0],
NFS_MAXPATHLEN) ||
__get_user(karg->ca_export.ex_dev,
&arg->ca32_export.ex32_dev) ||
__get_user(karg->ca_export.ex_ino,
&arg->ca32_export.ex32_ino) ||
__get_user(karg->ca_export.ex_flags,
&arg->ca32_export.ex32_flags) ||
__get_user(karg->ca_export.ex_anon_uid,
&arg->ca32_export.ex32_anon_uid) ||
__get_user(karg->ca_export.ex_anon_gid,
&arg->ca32_export.ex32_anon_gid))
return -EFAULT;
SET_UID(karg->ca_export.ex_anon_uid, karg->ca_export.ex_anon_uid);
SET_GID(karg->ca_export.ex_anon_gid, karg->ca_export.ex_anon_gid);
return 0;
}
static int compat_nfs_getfd_trans(struct nfsctl_arg *karg,
struct compat_nfsctl_arg __user *arg)
{
if (!access_ok(VERIFY_READ, &arg->ca32_getfd,
sizeof(arg->ca32_getfd)) ||
get_user(karg->ca_version, &arg->ca32_version) ||
__copy_from_user(&karg->ca_getfd.gd_addr,
&arg->ca32_getfd.gd32_addr,
(sizeof(struct sockaddr))) ||
__copy_from_user(&karg->ca_getfd.gd_path,
&arg->ca32_getfd.gd32_path,
(NFS_MAXPATHLEN+1)) ||
__get_user(karg->ca_getfd.gd_version,
&arg->ca32_getfd.gd32_version))
return -EFAULT;
return 0;
}
static int compat_nfs_getfs_trans(struct nfsctl_arg *karg,
struct compat_nfsctl_arg __user *arg)
{
if (!access_ok(VERIFY_READ,&arg->ca32_getfs,sizeof(arg->ca32_getfs)) ||
get_user(karg->ca_version, &arg->ca32_version) ||
__copy_from_user(&karg->ca_getfs.gd_addr,
&arg->ca32_getfs.gd32_addr,
(sizeof(struct sockaddr))) ||
__copy_from_user(&karg->ca_getfs.gd_path,
&arg->ca32_getfs.gd32_path,
(NFS_MAXPATHLEN+1)) ||
__get_user(karg->ca_getfs.gd_maxlen,
&arg->ca32_getfs.gd32_maxlen))
return -EFAULT;
return 0;
}
/* This really doesn't need translations, we are only passing
* back a union which contains opaque nfs file handle data.
*/
static int compat_nfs_getfh_res_trans(union nfsctl_res *kres,
union compat_nfsctl_res __user *res)
{
int err;
err = copy_to_user(res, kres, sizeof(*res));
return (err) ? -EFAULT : 0;
}
asmlinkage long compat_sys_nfsservctl(int cmd,
struct compat_nfsctl_arg __user *arg,
union compat_nfsctl_res __user *res)
{
struct nfsctl_arg *karg;
union nfsctl_res *kres;
mm_segment_t oldfs;
int err;
karg = kmalloc(sizeof(*karg), GFP_USER);
kres = kmalloc(sizeof(*kres), GFP_USER);
if(!karg || !kres) {
err = -ENOMEM;
goto done;
}
switch(cmd) {
case NFSCTL_SVC:
err = compat_nfs_svc_trans(karg, arg);
break;
case NFSCTL_ADDCLIENT:
err = compat_nfs_clnt_trans(karg, arg);
break;
case NFSCTL_DELCLIENT:
err = compat_nfs_clnt_trans(karg, arg);
break;
case NFSCTL_EXPORT:
case NFSCTL_UNEXPORT:
err = compat_nfs_exp_trans(karg, arg);
break;
case NFSCTL_GETFD:
err = compat_nfs_getfd_trans(karg, arg);
break;
case NFSCTL_GETFS:
err = compat_nfs_getfs_trans(karg, arg);
break;
default:
err = -EINVAL;
break;
}
if (err)
goto done;
oldfs = get_fs();
set_fs(KERNEL_DS);
/* The __user pointer casts are valid because of the set_fs() */
err = sys_nfsservctl(cmd, (void __user *) karg, (void __user *) kres);
set_fs(oldfs);
if (err)
goto done;
if((cmd == NFSCTL_GETFD) ||
(cmd == NFSCTL_GETFS))
err = compat_nfs_getfh_res_trans(kres, res);
done:
kfree(karg);
kfree(kres);
return err;
}
#else /* !NFSD */
long asmlinkage compat_sys_nfsservctl(int cmd, void *notused, void *notused2)
{
return sys_ni_syscall();
}
#endif
#ifdef CONFIG_EPOLL

10
fs/dlm/plock.c
View file

@ -92,7 +92,7 @@ static void do_unlock_close(struct dlm_ls *ls, u64 number,
op->info.number = number;
op->info.start = 0;
op->info.end = OFFSET_MAX;
if (fl->fl_lmops && fl->fl_lmops->fl_grant)
if (fl->fl_lmops && fl->fl_lmops->lm_grant)
op->info.owner = (__u64) fl->fl_pid;
else
op->info.owner = (__u64)(long) fl->fl_owner;
@ -128,11 +128,11 @@ int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
op->info.number = number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
if (fl->fl_lmops && fl->fl_lmops->fl_grant) {
if (fl->fl_lmops && fl->fl_lmops->lm_grant) {
/* fl_owner is lockd which doesn't distinguish
processes on the nfs client */
op->info.owner = (__u64) fl->fl_pid;
xop->callback = fl->fl_lmops->fl_grant;
xop->callback = fl->fl_lmops->lm_grant;
locks_init_lock(&xop->flc);
locks_copy_lock(&xop->flc, fl);
xop->fl = fl;
@ -268,7 +268,7 @@ int dlm_posix_unlock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
op->info.number = number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
if (fl->fl_lmops && fl->fl_lmops->fl_grant)
if (fl->fl_lmops && fl->fl_lmops->lm_grant)
op->info.owner = (__u64) fl->fl_pid;
else
op->info.owner = (__u64)(long) fl->fl_owner;
@ -327,7 +327,7 @@ int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file,
op->info.number = number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
if (fl->fl_lmops && fl->fl_lmops->fl_grant)
if (fl->fl_lmops && fl->fl_lmops->lm_grant)
op->info.owner = (__u64) fl->fl_pid;
else
op->info.owner = (__u64)(long) fl->fl_owner;

2
fs/fuse/file.c
View file

@ -1507,7 +1507,7 @@ static int fuse_setlk(struct file *file, struct file_lock *fl, int flock)
pid_t pid = fl->fl_type != F_UNLCK ? current->tgid : 0;
int err;
if (fl->fl_lmops && fl->fl_lmops->fl_grant) {
if (fl->fl_lmops && fl->fl_lmops->lm_grant) {
/* NLM needs asynchronous locks, which we don't support yet */
return -ENOLCK;
}

8
fs/lockd/svclock.c
View file

@ -632,7 +632,7 @@ nlmsvc_cancel_blocked(struct nlm_file *file, struct nlm_lock *lock)
/*
* This is a callback from the filesystem for VFS file lock requests.
* It will be used if fl_grant is defined and the filesystem can not
* It will be used if lm_grant is defined and the filesystem can not
* respond to the request immediately.
* For GETLK request it will copy the reply to the nlm_block.
* For SETLK or SETLKW request it will get the local posix lock.
@ -719,9 +719,9 @@ static int nlmsvc_same_owner(struct file_lock *fl1, struct file_lock *fl2)
}
const struct lock_manager_operations nlmsvc_lock_operations = {
.fl_compare_owner = nlmsvc_same_owner,
.fl_notify = nlmsvc_notify_blocked,
.fl_grant = nlmsvc_grant_deferred,
.lm_compare_owner = nlmsvc_same_owner,
.lm_notify = nlmsvc_notify_blocked,
.lm_grant = nlmsvc_grant_deferred,
};
/*

75
fs/locks.c
View file

@ -160,26 +160,20 @@ EXPORT_SYMBOL_GPL(unlock_flocks);
static struct kmem_cache *filelock_cache __read_mostly;
static void locks_init_lock_always(struct file_lock *fl)
static void locks_init_lock_heads(struct file_lock *fl)
{
fl->fl_next = NULL;
fl->fl_fasync = NULL;
fl->fl_owner = NULL;
fl->fl_pid = 0;
fl->fl_nspid = NULL;
fl->fl_file = NULL;
fl->fl_flags = 0;
fl->fl_type = 0;
fl->fl_start = fl->fl_end = 0;
INIT_LIST_HEAD(&fl->fl_link);
INIT_LIST_HEAD(&fl->fl_block);
init_waitqueue_head(&fl->fl_wait);
}
/* Allocate an empty lock structure. */
struct file_lock *locks_alloc_lock(void)
{
struct file_lock *fl = kmem_cache_alloc(filelock_cache, GFP_KERNEL);
struct file_lock *fl = kmem_cache_zalloc(filelock_cache, GFP_KERNEL);
if (fl)
locks_init_lock_always(fl);
locks_init_lock_heads(fl);
return fl;
}
@ -193,8 +187,8 @@ void locks_release_private(struct file_lock *fl)
fl->fl_ops = NULL;
}
if (fl->fl_lmops) {
if (fl->fl_lmops->fl_release_private)
fl->fl_lmops->fl_release_private(fl);
if (fl->fl_lmops->lm_release_private)
fl->fl_lmops->lm_release_private(fl);
fl->fl_lmops = NULL;
}
@ -215,27 +209,12 @@ EXPORT_SYMBOL(locks_free_lock);
void locks_init_lock(struct file_lock *fl)
{
INIT_LIST_HEAD(&fl->fl_link);
INIT_LIST_HEAD(&fl->fl_block);
init_waitqueue_head(&fl->fl_wait);
fl->fl_ops = NULL;
fl->fl_lmops = NULL;
locks_init_lock_always(fl);
memset(fl, 0, sizeof(struct file_lock));
locks_init_lock_heads(fl);
}
EXPORT_SYMBOL(locks_init_lock);
/*
* Initialises the fields of the file lock which are invariant for
* free file_locks.
*/
static void init_once(void *foo)
{
struct file_lock *lock = (struct file_lock *) foo;
locks_init_lock(lock);
}
static void locks_copy_private(struct file_lock *new, struct file_lock *fl)
{
if (fl->fl_ops) {
@ -444,9 +423,9 @@ static void lease_release_private_callback(struct file_lock *fl)
}
static const struct lock_manager_operations lease_manager_ops = {
.fl_break = lease_break_callback,
.fl_release_private = lease_release_private_callback,
.fl_change = lease_modify,
.lm_break = lease_break_callback,
.lm_release_private = lease_release_private_callback,
.lm_change = lease_modify,
};
/*
@ -499,9 +478,9 @@ static inline int locks_overlap(struct file_lock *fl1, struct file_lock *fl2)
*/
static int posix_same_owner(struct file_lock *fl1, struct file_lock *fl2)
{
if (fl1->fl_lmops && fl1->fl_lmops->fl_compare_owner)
if (fl1->fl_lmops && fl1->fl_lmops->lm_compare_owner)
return fl2->fl_lmops == fl1->fl_lmops &&
fl1->fl_lmops->fl_compare_owner(fl1, fl2);
fl1->fl_lmops->lm_compare_owner(fl1, fl2);
return fl1->fl_owner == fl2->fl_owner;
}
@ -551,8 +530,8 @@ static void locks_wake_up_blocks(struct file_lock *blocker)
waiter = list_first_entry(&blocker->fl_block,
struct file_lock, fl_block);
__locks_delete_block(waiter);
if (waiter->fl_lmops && waiter->fl_lmops->fl_notify)
waiter->fl_lmops->fl_notify(waiter);
if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
waiter->fl_lmops->lm_notify(waiter);
else
wake_up(&waiter->fl_wait);
}
@ -1239,7 +1218,7 @@ int __break_lease(struct inode *inode, unsigned int mode)
fl->fl_type = future;
fl->fl_break_time = break_time;
/* lease must have lmops break callback */
fl->fl_lmops->fl_break(fl);
fl->fl_lmops->lm_break(fl);
}
}
@ -1349,7 +1328,7 @@ int fcntl_getlease(struct file *filp)
* @arg: type of lease to obtain
* @flp: input - file_lock to use, output - file_lock inserted
*
* The (input) flp->fl_lmops->fl_break function is required
* The (input) flp->fl_lmops->lm_break function is required
* by break_lease().
*
* Called with file_lock_lock held.
@ -1375,7 +1354,7 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
time_out_leases(inode);
BUG_ON(!(*flp)->fl_lmops->fl_break);
BUG_ON(!(*flp)->fl_lmops->lm_break);
if (arg != F_UNLCK) {
error = -EAGAIN;
@ -1417,7 +1396,7 @@ int generic_setlease(struct file *filp, long arg, struct file_lock **flp)
goto out;
if (my_before != NULL) {
error = lease->fl_lmops->fl_change(my_before, arg);
error = lease->fl_lmops->lm_change(my_before, arg);
if (!error)
*flp = *my_before;
goto out;
@ -1453,7 +1432,7 @@ static int __vfs_setlease(struct file *filp, long arg, struct file_lock **lease)
* @lease: file_lock to use
*
* Call this to establish a lease on the file.
* The (*lease)->fl_lmops->fl_break operation must be set; if not,
* The (*lease)->fl_lmops->lm_break operation must be set; if not,
* break_lease will oops!
*
* This will call the filesystem's setlease file method, if
@ -1751,10 +1730,10 @@ out:
* To avoid blocking kernel daemons, such as lockd, that need to acquire POSIX
* locks, the ->lock() interface may return asynchronously, before the lock has
* been granted or denied by the underlying filesystem, if (and only if)
* fl_grant is set. Callers expecting ->lock() to return asynchronously
* lm_grant is set. Callers expecting ->lock() to return asynchronously
* will only use F_SETLK, not F_SETLKW; they will set FL_SLEEP if (and only if)
* the request is for a blocking lock. When ->lock() does return asynchronously,
* it must return FILE_LOCK_DEFERRED, and call ->fl_grant() when the lock
* it must return FILE_LOCK_DEFERRED, and call ->lm_grant() when the lock
* request completes.
* If the request is for non-blocking lock the file system should return
* FILE_LOCK_DEFERRED then try to get the lock and call the callback routine
@ -1764,7 +1743,7 @@ out:
* grants a lock so the VFS can find out which locks are locally held and do
* the correct lock cleanup when required.
* The underlying filesystem must not drop the kernel lock or call
* ->fl_grant() before returning to the caller with a FILE_LOCK_DEFERRED
* ->lm_grant() before returning to the caller with a FILE_LOCK_DEFERRED
* return code.
*/
int vfs_lock_file(struct file *filp, unsigned int cmd, struct file_lock *fl, struct file_lock *conf)
@ -2333,8 +2312,8 @@ EXPORT_SYMBOL(lock_may_write);
static int __init filelock_init(void)
{
filelock_cache = kmem_cache_create("file_lock_cache",
sizeof(struct file_lock), 0, SLAB_PANIC,
init_once);
sizeof(struct file_lock), 0, SLAB_PANIC, NULL);
return 0;
}

100
fs/nfsctl.c
View file

@ -1,100 +0,0 @@
/*
* fs/nfsctl.c
*
* This should eventually move to userland.
*
*/
#include <linux/types.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/nfsd/syscall.h>
#include <linux/cred.h>
#include <linux/sched.h>
#include <linux/linkage.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/syscalls.h>
#include <asm/uaccess.h>
/*
* open a file on nfsd fs
*/
static struct file *do_open(char *name, int flags)
{
struct vfsmount *mnt;
struct file *file;
mnt = do_kern_mount("nfsd", 0, "nfsd", NULL);
if (IS_ERR(mnt))
return (struct file *)mnt;
file = file_open_root(mnt->mnt_root, mnt, name, flags);
mntput(mnt); /* drop do_kern_mount reference */
return file;
}
static struct {
char *name; int wsize; int rsize;
} map[] = {
[NFSCTL_SVC] = {
.name = ".svc",
.wsize = sizeof(struct nfsctl_svc)
},
[NFSCTL_ADDCLIENT] = {
.name = ".add",
.wsize = sizeof(struct nfsctl_client)
},
[NFSCTL_DELCLIENT] = {
.name = ".del",
.wsize = sizeof(struct nfsctl_client)
},
[NFSCTL_EXPORT] = {
.name = ".export",
.wsize = sizeof(struct nfsctl_export)
},
[NFSCTL_UNEXPORT] = {
.name = ".unexport",
.wsize = sizeof(struct nfsctl_export)
},
[NFSCTL_GETFD] = {
.name = ".getfd",
.wsize = sizeof(struct nfsctl_fdparm),
.rsize = NFS_FHSIZE
},
[NFSCTL_GETFS] = {
.name = ".getfs",
.wsize = sizeof(struct nfsctl_fsparm),
.rsize = sizeof(struct knfsd_fh)
},
};
SYSCALL_DEFINE3(nfsservctl, int, cmd, struct nfsctl_arg __user *, arg,
void __user *, res)
{
struct file *file;
void __user *p = &arg->u;
int version;
int err;
if (copy_from_user(&version, &arg->ca_version, sizeof(int)))
return -EFAULT;
if (version != NFSCTL_VERSION)
return -EINVAL;
if (cmd < 0 || cmd >= ARRAY_SIZE(map) || !map[cmd].name)
return -EINVAL;
file = do_open(map[cmd].name, map[cmd].rsize ? O_RDWR : O_WRONLY);
if (IS_ERR(file))
return PTR_ERR(file);
err = file->f_op->write(file, p, map[cmd].wsize, &file->f_pos);
if (err >= 0 && map[cmd].rsize)
err = file->f_op->read(file, res, map[cmd].rsize, &file->f_pos);
if (err >= 0)
err = 0;
fput(file);
return err;
}

12
fs/nfsd/Kconfig
View file

@ -28,18 +28,6 @@ config NFSD
If unsure, say N.
config NFSD_DEPRECATED
bool "Include support for deprecated syscall interface to NFSD"
depends on NFSD
default y
help
The syscall interface to nfsd was obsoleted in 2.6.0 by a new
filesystem based interface. The old interface is due for removal
in 2.6.40. If you wish to remove the interface before then
say N.
In unsure, say Y.
config NFSD_V2_ACL
bool
depends on NFSD

2
fs/nfsd/cache.h
View file

@ -69,7 +69,7 @@ enum {
int nfsd_reply_cache_init(void);
void nfsd_reply_cache_shutdown(void);
int nfsd_cache_lookup(struct svc_rqst *, int);
int nfsd_cache_lookup(struct svc_rqst *);
void nfsd_cache_update(struct svc_rqst *, int, __be32 *);
#ifdef CONFIG_NFSD_V4

418
fs/nfsd/export.c
View file

@ -797,58 +797,6 @@ exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp)
return ek;
}
#ifdef CONFIG_NFSD_DEPRECATED
static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv,
struct svc_export *exp)
{
struct svc_expkey key, *ek;
key.ek_client = clp;
key.ek_fsidtype = fsid_type;
memcpy(key.ek_fsid, fsidv, key_len(fsid_type));
key.ek_path = exp->ex_path;
key.h.expiry_time = NEVER;
key.h.flags = 0;
ek = svc_expkey_lookup(&key);
if (ek)
ek = svc_expkey_update(&key,ek);
if (ek) {
cache_put(&ek->h, &svc_expkey_cache);
return 0;
}
return -ENOMEM;
}
/*
* Find the client's export entry matching xdev/xino.
*/
static inline struct svc_expkey *
exp_get_key(svc_client *clp, dev_t dev, ino_t ino)
{
u32 fsidv[3];
if (old_valid_dev(dev)) {
mk_fsid(FSID_DEV, fsidv, dev, ino, 0, NULL);
return exp_find_key(clp, FSID_DEV, fsidv, NULL);
}
mk_fsid(FSID_ENCODE_DEV, fsidv, dev, ino, 0, NULL);
return exp_find_key(clp, FSID_ENCODE_DEV, fsidv, NULL);
}
/*
* Find the client's export entry matching fsid
*/
static inline struct svc_expkey *
exp_get_fsid_key(svc_client *clp, int fsid)
{
u32 fsidv[2];
mk_fsid(FSID_NUM, fsidv, 0, 0, fsid, NULL);
return exp_find_key(clp, FSID_NUM, fsidv, NULL);
}
#endif
static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
struct cache_req *reqp)
@ -890,275 +838,7 @@ static struct svc_export *exp_parent(svc_client *clp, struct path *path)
return exp;
}
#ifdef CONFIG_NFSD_DEPRECATED
/*
* Hashtable locking. Write locks are placed only by user processes
* wanting to modify export information.
* Write locking only done in this file. Read locking
* needed externally.
*/
static DECLARE_RWSEM(hash_sem);
void
exp_readlock(void)
{
down_read(&hash_sem);
}
static inline void
exp_writelock(void)
{
down_write(&hash_sem);
}
void
exp_readunlock(void)
{
up_read(&hash_sem);
}
static inline void
exp_writeunlock(void)
{
up_write(&hash_sem);
}
#else
/* hash_sem not needed once deprecated interface is removed */
void exp_readlock(void) {}
static inline void exp_writelock(void){}
void exp_readunlock(void) {}
static inline void exp_writeunlock(void){}
#endif
#ifdef CONFIG_NFSD_DEPRECATED
static void exp_do_unexport(svc_export *unexp);
static int exp_verify_string(char *cp, int max);
static void exp_fsid_unhash(struct svc_export *exp)
{
struct svc_expkey *ek;
if ((exp->ex_flags & NFSEXP_FSID) == 0)
return;
ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid);
if (!IS_ERR(ek)) {
sunrpc_invalidate(&ek->h, &svc_expkey_cache);
cache_put(&ek->h, &svc_expkey_cache);
}
}
static int exp_fsid_hash(svc_client *clp, struct svc_export *exp)
{
u32 fsid[2];
if ((exp->ex_flags & NFSEXP_FSID) == 0)
return 0;
mk_fsid(FSID_NUM, fsid, 0, 0, exp->ex_fsid, NULL);
return exp_set_key(clp, FSID_NUM, fsid, exp);
}
static int exp_hash(struct auth_domain *clp, struct svc_export *exp)
{
u32 fsid[2];
struct inode *inode = exp->ex_path.dentry->d_inode;
dev_t dev = inode->i_sb->s_dev;
if (old_valid_dev(dev)) {
mk_fsid(FSID_DEV, fsid, dev, inode->i_ino, 0, NULL);
return exp_set_key(clp, FSID_DEV, fsid, exp);
}
mk_fsid(FSID_ENCODE_DEV, fsid, dev, inode->i_ino, 0, NULL);
return exp_set_key(clp, FSID_ENCODE_DEV, fsid, exp);
}
static void exp_unhash(struct svc_export *exp)
{
struct svc_expkey *ek;
struct inode *inode = exp->ex_path.dentry->d_inode;
ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
if (!IS_ERR(ek)) {
sunrpc_invalidate(&ek->h, &svc_expkey_cache);
cache_put(&ek->h, &svc_expkey_cache);
}
}
/*
* Export a file system.
*/
int
exp_export(struct nfsctl_export *nxp)
{
svc_client *clp;
struct svc_export *exp = NULL;
struct svc_export new;
struct svc_expkey *fsid_key = NULL;
struct path path;
int err;
/* Consistency check */
err = -EINVAL;
if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
!exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
goto out;
dprintk("exp_export called for %s:%s (%x/%ld fl %x).\n",
nxp->ex_client, nxp->ex_path,
(unsigned)nxp->ex_dev, (long)nxp->ex_ino,
nxp->ex_flags);
/* Try to lock the export table for update */
exp_writelock();
/* Look up client info */
if (!(clp = auth_domain_find(nxp->ex_client)))
goto out_unlock;
/* Look up the dentry */
err = kern_path(nxp->ex_path, 0, &path);
if (err)
goto out_put_clp;
err = -EINVAL;
exp = exp_get_by_name(clp, &path, NULL);
memset(&new, 0, sizeof(new));
/* must make sure there won't be an ex_fsid clash */
if ((nxp->ex_flags & NFSEXP_FSID) &&
(!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
fsid_key->ek_path.mnt &&
(fsid_key->ek_path.mnt != path.mnt ||
fsid_key->ek_path.dentry != path.dentry))
goto finish;
if (!IS_ERR(exp)) {
/* just a flags/id/fsid update */
exp_fsid_unhash(exp);
exp->ex_flags = nxp->ex_flags;
exp->ex_anon_uid = nxp->ex_anon_uid;
exp->ex_anon_gid = nxp->ex_anon_gid;
exp->ex_fsid = nxp->ex_dev;
err = exp_fsid_hash(clp, exp);
goto finish;
}
err = check_export(path.dentry->d_inode, &nxp->ex_flags, NULL);
if (err) goto finish;
err = -ENOMEM;
dprintk("nfsd: creating export entry %p for client %p\n", exp, clp);
new.h.expiry_time = NEVER;
new.h.flags = 0;
new.ex_pathname = kstrdup(nxp->ex_path, GFP_KERNEL);
if (!new.ex_pathname)
goto finish;
new.ex_client = clp;
new.ex_path = path;
new.ex_flags = nxp->ex_flags;
new.ex_anon_uid = nxp->ex_anon_uid;
new.ex_anon_gid = nxp->ex_anon_gid;
new.ex_fsid = nxp->ex_dev;
exp = svc_export_lookup(&new);
if (exp)
exp = svc_export_update(&new, exp);
if (!exp)
goto finish;
if (exp_hash(clp, exp) ||
exp_fsid_hash(clp, exp)) {
/* failed to create at least one index */
exp_do_unexport(exp);
cache_flush();
} else
err = 0;
finish:
kfree(new.ex_pathname);
if (!IS_ERR_OR_NULL(exp))
exp_put(exp);
if (!IS_ERR_OR_NULL(fsid_key))
cache_put(&fsid_key->h, &svc_expkey_cache);
path_put(&path);
out_put_clp:
auth_domain_put(clp);
out_unlock:
exp_writeunlock();
out:
return err;
}
/*
* Unexport a file system. The export entry has already
* been removed from the client's list of exported fs's.
*/
static void
exp_do_unexport(svc_export *unexp)
{
sunrpc_invalidate(&unexp->h, &svc_export_cache);
exp_unhash(unexp);
exp_fsid_unhash(unexp);
}
/*
* unexport syscall.
*/
int
exp_unexport(struct nfsctl_export *nxp)
{
struct auth_domain *dom;
svc_export *exp;
struct path path;
int err;
/* Consistency check */
if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) ||
!exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX))
return -EINVAL;
exp_writelock();
err = -EINVAL;
dom = auth_domain_find(nxp->ex_client);
if (!dom) {
dprintk("nfsd: unexport couldn't find %s\n", nxp->ex_client);
goto out_unlock;
}
err = kern_path(nxp->ex_path, 0, &path);
if (err)
goto out_domain;
err = -EINVAL;
exp = exp_get_by_name(dom, &path, NULL);
path_put(&path);
if (IS_ERR(exp))
goto out_domain;
exp_do_unexport(exp);
exp_put(exp);
err = 0;
out_domain:
auth_domain_put(dom);
cache_flush();
out_unlock:
exp_writeunlock();
return err;
}
#endif /* CONFIG_NFSD_DEPRECATED */
/*
* Obtain the root fh on behalf of a client.
@ -1367,7 +1047,6 @@ static void *e_start(struct seq_file *m, loff_t *pos)
unsigned hash, export;
struct cache_head *ch;
exp_readlock();
read_lock(&svc_export_cache.hash_lock);
if (!n--)
return SEQ_START_TOKEN;
@ -1418,7 +1097,6 @@ static void e_stop(struct seq_file *m, void *p)
__releases(svc_export_cache.hash_lock)
{
read_unlock(&svc_export_cache.hash_lock);
exp_readunlock();
}
static struct flags {
@ -1550,97 +1228,6 @@ const struct seq_operations nfs_exports_op = {
.show = e_show,
};
#ifdef CONFIG_NFSD_DEPRECATED
/*
* Add or modify a client.
* Change requests may involve the list of host addresses. The list of
* exports and possibly existing uid maps are left untouched.
*/
int
exp_addclient(struct nfsctl_client *ncp)
{
struct auth_domain *dom;
int i, err;
struct in6_addr addr6;
/* First, consistency check. */
err = -EINVAL;
if (! exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
goto out;
if (ncp->cl_naddr > NFSCLNT_ADDRMAX)
goto out;
/* Lock the hashtable */
exp_writelock();
dom = unix_domain_find(ncp->cl_ident);
err = -ENOMEM;
if (!dom)
goto out_unlock;
/* Insert client into hashtable. */
for (i = 0; i < ncp->cl_naddr; i++) {
ipv6_addr_set_v4mapped(ncp->cl_addrlist[i].s_addr, &addr6);
auth_unix_add_addr(&init_net, &addr6, dom);
}
auth_unix_forget_old(dom);
auth_domain_put(dom);
err = 0;
out_unlock:
exp_writeunlock();
out:
return err;
}
/*
* Delete a client given an identifier.
*/
int
exp_delclient(struct nfsctl_client *ncp)
{
int err;
struct auth_domain *dom;
err = -EINVAL;
if (!exp_verify_string(ncp->cl_ident, NFSCLNT_IDMAX))
goto out;
/* Lock the hashtable */
exp_writelock();
dom = auth_domain_find(ncp->cl_ident);
/* just make sure that no addresses work
* and that it will expire soon
*/
if (dom) {
err = auth_unix_forget_old(dom);
auth_domain_put(dom);
}
exp_writeunlock();
out:
return err;
}
/*
* Verify that string is non-empty and does not exceed max length.
*/
static int
exp_verify_string(char *cp, int max)
{
int i;
for (i = 0; i < max; i++)
if (!cp[i])
return i;
cp[i] = 0;
printk(KERN_NOTICE "nfsd: couldn't validate string %s\n", cp);
return 0;
}
#endif /* CONFIG_NFSD_DEPRECATED */
/*
* Initialize the exports module.
@ -1667,10 +1254,8 @@ nfsd_export_init(void)
void
nfsd_export_flush(void)
{
exp_writelock();
cache_purge(&svc_expkey_cache);
cache_purge(&svc_export_cache);
exp_writeunlock();
}
/*
@ -1682,12 +1267,9 @@ nfsd_export_shutdown(void)
dprintk("nfsd: shutting down export module.\n");
exp_writelock();
cache_unregister(&svc_expkey_cache);
cache_unregister(&svc_export_cache);
svcauth_unix_purge();
exp_writeunlock();
dprintk("nfsd: export shutdown complete.\n");
}

2
fs/nfsd/lockd.c
View file

@ -35,10 +35,8 @@ nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp)
memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
fh.fh_export = NULL;
exp_readlock();
nfserr = nfsd_open(rqstp, &fh, S_IFREG, NFSD_MAY_LOCK, filp);
fh_put(&fh);
exp_readunlock();
/* We return nlm error codes as nlm doesn't know
* about nfsd, but nfsd does know about nlm..
*/

58
fs/nfsd/nfs4proc.c
View file

@ -291,6 +291,15 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
/*
* RFC5661 18.51.3
* Before RECLAIM_COMPLETE done, server should deny new lock
*/
if (nfsd4_has_session(cstate) &&
!cstate->session->se_client->cl_firststate &&
open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
return nfserr_grace;
if (nfsd4_has_session(cstate))
copy_clientid(&open->op_clientid, cstate->session);
@ -998,6 +1007,15 @@ struct nfsd4_operation {
nfsd4op_func op_func;
u32 op_flags;
char *op_name;
/*
* We use the DRC for compounds containing non-idempotent
* operations, *except* those that are 4.1-specific (since
* sessions provide their own EOS), and except for stateful
* operations other than setclientid and setclientid_confirm
* (since sequence numbers provide EOS for open, lock, etc in
* the v4.0 case).
*/
bool op_cacheresult;
};
static struct nfsd4_operation nfsd4_ops[];
@ -1042,6 +1060,11 @@ static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
return &nfsd4_ops[op->opnum];
}
bool nfsd4_cache_this_op(struct nfsd4_op *op)
{
return OPDESC(op)->op_cacheresult;
}
static bool need_wrongsec_check(struct svc_rqst *rqstp)
{
struct nfsd4_compoundres *resp = rqstp->rq_resp;
@ -1209,7 +1232,6 @@ encode_op:
fh_put(&resp->cstate.save_fh);
BUG_ON(resp->cstate.replay_owner);
out:
nfsd4_release_compoundargs(args);
/* Reset deferral mechanism for RPC deferrals */
rqstp->rq_usedeferral = 1;
dprintk("nfsv4 compound returned %d\n", ntohl(status));
@ -1232,6 +1254,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_CREATE] = {
.op_func = (nfsd4op_func)nfsd4_create,
.op_name = "OP_CREATE",
.op_cacheresult = true,
},
[OP_DELEGRETURN] = {
.op_func = (nfsd4op_func)nfsd4_delegreturn,
@ -1249,6 +1272,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_LINK] = {
.op_func = (nfsd4op_func)nfsd4_link,
.op_name = "OP_LINK",
.op_cacheresult = true,
},
[OP_LOCK] = {
.op_func = (nfsd4op_func)nfsd4_lock,
@ -1322,10 +1346,12 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_REMOVE] = {
.op_func = (nfsd4op_func)nfsd4_remove,
.op_name = "OP_REMOVE",
.op_cacheresult = true,
},
[OP_RENAME] = {
.op_name = "OP_RENAME",
.op_func = (nfsd4op_func)nfsd4_rename,
.op_cacheresult = true,
},
[OP_RENEW] = {
.op_func = (nfsd4op_func)nfsd4_renew,
@ -1351,16 +1377,19 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_SETATTR] = {
.op_func = (nfsd4op_func)nfsd4_setattr,
.op_name = "OP_SETATTR",
.op_cacheresult = true,
},
[OP_SETCLIENTID] = {
.op_func = (nfsd4op_func)nfsd4_setclientid,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
.op_name = "OP_SETCLIENTID",
.op_cacheresult = true,
},
[OP_SETCLIENTID_CONFIRM] = {
.op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
.op_name = "OP_SETCLIENTID_CONFIRM",
.op_cacheresult = true,
},
[OP_VERIFY] = {
.op_func = (nfsd4op_func)nfsd4_verify,
@ -1369,6 +1398,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
[OP_WRITE] = {
.op_func = (nfsd4op_func)nfsd4_write,
.op_name = "OP_WRITE",
.op_cacheresult = true,
},
[OP_RELEASE_LOCKOWNER] = {
.op_func = (nfsd4op_func)nfsd4_release_lockowner,
@ -1402,6 +1432,11 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
.op_name = "OP_SEQUENCE",
},
[OP_DESTROY_CLIENTID] = {
.op_func = NULL,
.op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
.op_name = "OP_DESTROY_CLIENTID",
},
[OP_RECLAIM_COMPLETE] = {
.op_func = (nfsd4op_func)nfsd4_reclaim_complete,
.op_flags = ALLOWED_WITHOUT_FH,
@ -1412,6 +1447,16 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_HANDLES_WRONGSEC,
.op_name = "OP_SECINFO_NO_NAME",
},
[OP_TEST_STATEID] = {
.op_func = (nfsd4op_func)nfsd4_test_stateid,
.op_flags = ALLOWED_WITHOUT_FH,
.op_name = "OP_TEST_STATEID",
},
[OP_FREE_STATEID] = {
.op_func = (nfsd4op_func)nfsd4_free_stateid,
.op_flags = ALLOWED_WITHOUT_FH,
.op_name = "OP_FREE_STATEID",
},
};
static const char *nfsd4_op_name(unsigned opnum)
@ -1424,16 +1469,6 @@ static const char *nfsd4_op_name(unsigned opnum)
#define nfsd4_voidres nfsd4_voidargs
struct nfsd4_voidargs { int dummy; };
/*
* TODO: At the present time, the NFSv4 server does not do XID caching
* of requests. Implementing XID caching would not be a serious problem,
* although it would require a mild change in interfaces since one
* doesn't know whether an NFSv4 request is idempotent until after the
* XDR decode. However, XID caching totally confuses pynfs (Peter
* Astrand's regression testsuite for NFSv4 servers), which reuses
* XID's liberally, so I've left it unimplemented until pynfs generates
* better XID's.
*/
static struct svc_procedure nfsd_procedures4[2] = {
[NFSPROC4_NULL] = {
.pc_func = (svc_procfunc) nfsd4_proc_null,
@ -1449,6 +1484,7 @@ static struct svc_procedure nfsd_procedures4[2] = {
.pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
.pc_argsize = sizeof(struct nfsd4_compoundargs),
.pc_ressize = sizeof(struct nfsd4_compoundres),
.pc_release = nfsd4_release_compoundargs,
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = NFSD_BUFSIZE/4,
},

265
fs/nfsd/nfs4state.c
View file

@ -37,6 +37,7 @@
#include <linux/slab.h>
#include <linux/namei.h>
#include <linux/swap.h>
#include <linux/pagemap.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/clnt.h>
#include "xdr4.h"
@ -60,9 +61,12 @@ static u64 current_sessionid = 1;
/* forward declarations */
static struct nfs4_stateid * find_stateid(stateid_t *stid, int flags);
static struct nfs4_stateid * search_for_stateid(stateid_t *stid);
static struct nfs4_delegation * search_for_delegation(stateid_t *stid);
static struct nfs4_delegation * find_delegation_stateid(struct inode *ino, stateid_t *stid);
static char user_recovery_dirname[PATH_MAX] = "/var/lib/nfs/v4recovery";
static void nfs4_set_recdir(char *recdir);
static int check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner);
/* Locking: */
@ -381,14 +385,6 @@ static int nfs4_access_to_omode(u32 access)
BUG();
}
static int nfs4_access_bmap_to_omode(struct nfs4_stateid *stp)
{
unsigned int access;
set_access(&access, stp->st_access_bmap);
return nfs4_access_to_omode(access);
}
static void unhash_generic_stateid(struct nfs4_stateid *stp)
{
list_del(&stp->st_hash);
@ -398,11 +394,14 @@ static void unhash_generic_stateid(struct nfs4_stateid *stp)
static void free_generic_stateid(struct nfs4_stateid *stp)
{
int oflag;
int i;
if (stp->st_access_bmap) {
oflag = nfs4_access_bmap_to_omode(stp);
nfs4_file_put_access(stp->st_file, oflag);
for (i = 1; i < 4; i++) {
if (test_bit(i, &stp->st_access_bmap))
nfs4_file_put_access(stp->st_file,
nfs4_access_to_omode(i));
}
}
put_nfs4_file(stp->st_file);
kmem_cache_free(stateid_slab, stp);
@ -1507,6 +1506,29 @@ nfsd4_replay_create_session(struct nfsd4_create_session *cr_ses,
return slot->sl_status;
}
#define NFSD_MIN_REQ_HDR_SEQ_SZ ((\
2 * 2 + /* credential,verifier: AUTH_NULL, length 0 */ \
1 + /* MIN tag is length with zero, only length */ \
3 + /* version, opcount, opcode */ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
/* seqid, slotID, slotID, cache */ \
4 ) * sizeof(__be32))
#define NFSD_MIN_RESP_HDR_SEQ_SZ ((\
2 + /* verifier: AUTH_NULL, length 0 */\
1 + /* status */ \
1 + /* MIN tag is length with zero, only length */ \
3 + /* opcount, opcode, opstatus*/ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
/* seqid, slotID, slotID, slotID, status */ \
5 ) * sizeof(__be32))
static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs fchannel)
{
return fchannel.maxreq_sz < NFSD_MIN_REQ_HDR_SEQ_SZ
|| fchannel.maxresp_sz < NFSD_MIN_RESP_HDR_SEQ_SZ;
}
__be32
nfsd4_create_session(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
@ -1575,6 +1597,10 @@ nfsd4_create_session(struct svc_rqst *rqstp,
cr_ses->flags &= ~SESSION4_PERSIST;
cr_ses->flags &= ~SESSION4_RDMA;
status = nfserr_toosmall;
if (check_forechannel_attrs(cr_ses->fore_channel))
goto out;
status = nfserr_jukebox;
new = alloc_init_session(rqstp, conf, cr_ses);
if (!new)
@ -1736,6 +1762,14 @@ static bool nfsd4_session_too_many_ops(struct svc_rqst *rqstp, struct nfsd4_sess
return args->opcnt > session->se_fchannel.maxops;
}
static bool nfsd4_request_too_big(struct svc_rqst *rqstp,
struct nfsd4_session *session)
{
struct xdr_buf *xb = &rqstp->rq_arg;
return xb->len > session->se_fchannel.maxreq_sz;
}
__be32
nfsd4_sequence(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate,
@ -1768,6 +1802,10 @@ nfsd4_sequence(struct svc_rqst *rqstp,
if (nfsd4_session_too_many_ops(rqstp, session))
goto out;
status = nfserr_req_too_big;
if (nfsd4_request_too_big(rqstp, session))
goto out;
status = nfserr_badslot;
if (seq->slotid >= session->se_fchannel.maxreqs)
goto out;
@ -2337,15 +2375,6 @@ out:
return ret;
}
static inline void
nfs4_file_downgrade(struct nfs4_file *fp, unsigned int share_access)
{
if (share_access & NFS4_SHARE_ACCESS_WRITE)
nfs4_file_put_access(fp, O_WRONLY);
if (share_access & NFS4_SHARE_ACCESS_READ)
nfs4_file_put_access(fp, O_RDONLY);
}
static void nfsd_break_one_deleg(struct nfs4_delegation *dp)
{
/* We're assuming the state code never drops its reference
@ -2396,8 +2425,8 @@ int nfsd_change_deleg_cb(struct file_lock **onlist, int arg)
}
static const struct lock_manager_operations nfsd_lease_mng_ops = {
.fl_break = nfsd_break_deleg_cb,
.fl_change = nfsd_change_deleg_cb,
.lm_break = nfsd_break_deleg_cb,
.lm_change = nfsd_change_deleg_cb,
};
@ -2556,12 +2585,18 @@ static inline int nfs4_access_to_access(u32 nfs4_access)
return flags;
}
static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file
*fp, struct svc_fh *cur_fh, u32 nfs4_access)
static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
struct svc_fh *cur_fh, struct nfsd4_open *open)
{
__be32 status;
int oflag = nfs4_access_to_omode(nfs4_access);
int access = nfs4_access_to_access(nfs4_access);
int oflag = nfs4_access_to_omode(open->op_share_access);
int access = nfs4_access_to_access(open->op_share_access);
/* CLAIM_DELEGATE_CUR is used in response to a broken lease;
* allowing it to break the lease and return EAGAIN leaves the
* client unable to make progress in returning the delegation */
if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
access |= NFSD_MAY_NOT_BREAK_LEASE;
if (!fp->fi_fds[oflag]) {
status = nfsd_open(rqstp, cur_fh, S_IFREG, access,
@ -2586,7 +2621,7 @@ nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
if (stp == NULL)
return nfserr_resource;
status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open->op_share_access);
status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open);
if (status) {
kmem_cache_free(stateid_slab, stp);
return status;
@ -2619,14 +2654,14 @@ nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *c
new_access = !test_bit(op_share_access, &stp->st_access_bmap);
if (new_access) {
status = nfs4_get_vfs_file(rqstp, fp, cur_fh, op_share_access);
status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open);
if (status)
return status;
}
status = nfsd4_truncate(rqstp, cur_fh, open);
if (status) {
if (new_access) {
int oflag = nfs4_access_to_omode(new_access);
int oflag = nfs4_access_to_omode(op_share_access);
nfs4_file_put_access(fp, oflag);
}
return status;
@ -3137,6 +3172,37 @@ static int is_delegation_stateid(stateid_t *stateid)
return stateid->si_fileid == 0;
}
static int is_open_stateid(struct nfs4_stateid *stateid)
{
return stateid->st_openstp == NULL;
}
__be32 nfs4_validate_stateid(stateid_t *stateid, int flags)
{
struct nfs4_stateid *stp = NULL;
__be32 status = nfserr_stale_stateid;
if (STALE_STATEID(stateid))
goto out;
status = nfserr_expired;
stp = search_for_stateid(stateid);
if (!stp)
goto out;
status = nfserr_bad_stateid;
if (!stp->st_stateowner->so_confirmed)
goto out;
status = check_stateid_generation(stateid, &stp->st_stateid, flags);
if (status)
goto out;
status = nfs_ok;
out:
return status;
}
/*
* Checks for stateid operations
*/
@ -3216,6 +3282,81 @@ out:
return status;
}
static __be32
nfsd4_free_delegation_stateid(stateid_t *stateid)
{
struct nfs4_delegation *dp = search_for_delegation(stateid);
if (dp)
return nfserr_locks_held;
return nfserr_bad_stateid;
}
static __be32
nfsd4_free_lock_stateid(struct nfs4_stateid *stp)
{
if (check_for_locks(stp->st_file, stp->st_stateowner))
return nfserr_locks_held;
release_lock_stateid(stp);
return nfs_ok;
}
/*
* Test if the stateid is valid
*/
__be32
nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_test_stateid *test_stateid)
{
test_stateid->ts_has_session = nfsd4_has_session(cstate);
return nfs_ok;
}
/*
* Free a state id
*/
__be32
nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_free_stateid *free_stateid)
{
stateid_t *stateid = &free_stateid->fr_stateid;
struct nfs4_stateid *stp;
__be32 ret;
nfs4_lock_state();
if (is_delegation_stateid(stateid)) {
ret = nfsd4_free_delegation_stateid(stateid);
goto out;
}
stp = search_for_stateid(stateid);
if (!stp) {
ret = nfserr_bad_stateid;
goto out;
}
if (stateid->si_generation != 0) {
if (stateid->si_generation < stp->st_stateid.si_generation) {
ret = nfserr_old_stateid;
goto out;
}
if (stateid->si_generation > stp->st_stateid.si_generation) {
ret = nfserr_bad_stateid;
goto out;
}
}
if (is_open_stateid(stp)) {
ret = nfserr_locks_held;
goto out;
} else {
ret = nfsd4_free_lock_stateid(stp);
goto out;
}
out:
nfs4_unlock_state();
return ret;
}
static inline int
setlkflg (int type)
{
@ -3384,18 +3525,15 @@ out:
return status;
}
/*
* unset all bits in union bitmap (bmap) that
* do not exist in share (from successful OPEN_DOWNGRADE)
*/
static void
reset_union_bmap_access(unsigned long access, unsigned long *bmap)
static inline void nfs4_file_downgrade(struct nfs4_stateid *stp, unsigned int to_access)
{
int i;
for (i = 1; i < 4; i++) {
if ((i & access) != i)
__clear_bit(i, bmap);
if (test_bit(i, &stp->st_access_bmap) && !(i & to_access)) {
nfs4_file_put_access(stp->st_file, i);
__clear_bit(i, &stp->st_access_bmap);
}
}
}
@ -3416,7 +3554,6 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
{
__be32 status;
struct nfs4_stateid *stp;
unsigned int share_access;
dprintk("NFSD: nfsd4_open_downgrade on file %.*s\n",
(int)cstate->current_fh.fh_dentry->d_name.len,
@ -3445,10 +3582,8 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
stp->st_deny_bmap, od->od_share_deny);
goto out;
}
set_access(&share_access, stp->st_access_bmap);
nfs4_file_downgrade(stp->st_file, share_access & ~od->od_share_access);
nfs4_file_downgrade(stp, od->od_share_access);
reset_union_bmap_access(od->od_share_access, &stp->st_access_bmap);
reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);
update_stateid(&stp->st_stateid);
@ -3594,6 +3729,14 @@ static struct list_head lock_ownerid_hashtbl[LOCK_HASH_SIZE];
static struct list_head lock_ownerstr_hashtbl[LOCK_HASH_SIZE];
static struct list_head lockstateid_hashtbl[STATEID_HASH_SIZE];
static int
same_stateid(stateid_t *id_one, stateid_t *id_two)
{
if (id_one->si_stateownerid != id_two->si_stateownerid)
return 0;
return id_one->si_fileid == id_two->si_fileid;
}
static struct nfs4_stateid *
find_stateid(stateid_t *stid, int flags)
{
@ -3623,6 +3766,44 @@ find_stateid(stateid_t *stid, int flags)
return NULL;
}
static struct nfs4_stateid *
search_for_stateid(stateid_t *stid)
{
struct nfs4_stateid *local;
unsigned int hashval = stateid_hashval(stid->si_stateownerid, stid->si_fileid);
list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
if (same_stateid(&local->st_stateid, stid))
return local;
}
list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
if (same_stateid(&local->st_stateid, stid))
return local;
}
return NULL;
}
static struct nfs4_delegation *
search_for_delegation(stateid_t *stid)
{
struct nfs4_file *fp;
struct nfs4_delegation *dp;
struct list_head *pos;
int i;
for (i = 0; i < FILE_HASH_SIZE; i++) {
list_for_each_entry(fp, &file_hashtbl[i], fi_hash) {
list_for_each(pos, &fp->fi_delegations) {
dp = list_entry(pos, struct nfs4_delegation, dl_perfile);
if (same_stateid(&dp->dl_stateid, stid))
return dp;
}
}
}
return NULL;
}
static struct nfs4_delegation *
find_delegation_stateid(struct inode *ino, stateid_t *stid)
{

144
fs/nfsd/nfs4xdr.c
View file

@ -44,13 +44,15 @@
#include <linux/namei.h>
#include <linux/statfs.h>
#include <linux/utsname.h>
#include <linux/pagemap.h>
#include <linux/sunrpc/svcauth_gss.h>
#include "idmap.h"
#include "acl.h"
#include "xdr4.h"
#include "vfs.h"
#include "state.h"
#include "cache.h"
#define NFSDDBG_FACILITY NFSDDBG_XDR
@ -131,6 +133,22 @@ xdr_error: \
} \
} while (0)
static void save_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
{
savep->p = argp->p;
savep->end = argp->end;
savep->pagelen = argp->pagelen;
savep->pagelist = argp->pagelist;
}
static void restore_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
{
argp->p = savep->p;
argp->end = savep->end;
argp->pagelen = savep->pagelen;
argp->pagelist = savep->pagelist;
}
static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
{
/* We want more bytes than seem to be available.
@ -1245,6 +1263,19 @@ nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
DECODE_TAIL;
}
static __be32
nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp,
struct nfsd4_free_stateid *free_stateid)
{
DECODE_HEAD;
READ_BUF(sizeof(stateid_t));
READ32(free_stateid->fr_stateid.si_generation);
COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t));
DECODE_TAIL;
}
static __be32
nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
struct nfsd4_sequence *seq)
@ -1261,6 +1292,40 @@ nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
DECODE_TAIL;
}
static __be32
nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid)
{
unsigned int nbytes;
stateid_t si;
int i;
__be32 *p;
__be32 status;
READ_BUF(4);
test_stateid->ts_num_ids = ntohl(*p++);
nbytes = test_stateid->ts_num_ids * sizeof(stateid_t);
if (nbytes > (u32)((char *)argp->end - (char *)argp->p))
goto xdr_error;
test_stateid->ts_saved_args = argp;
save_buf(argp, &test_stateid->ts_savedp);
for (i = 0; i < test_stateid->ts_num_ids; i++) {
status = nfsd4_decode_stateid(argp, &si);
if (status)
return status;
}
status = 0;
out:
return status;
xdr_error:
dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__);
status = nfserr_bad_xdr;
goto out;
}
static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc)
{
DECODE_HEAD;
@ -1370,7 +1435,7 @@ static nfsd4_dec nfsd41_dec_ops[] = {
[OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id,
[OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session,
[OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session,
[OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid,
[OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp,
@ -1380,7 +1445,7 @@ static nfsd4_dec nfsd41_dec_ops[] = {
[OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name,
[OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence,
[OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid,
[OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete,
@ -1402,6 +1467,7 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
DECODE_HEAD;
struct nfsd4_op *op;
struct nfsd4_minorversion_ops *ops;
bool cachethis = false;
int i;
/*
@ -1483,7 +1549,16 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
argp->opcnt = i+1;
break;
}
/*
* We'll try to cache the result in the DRC if any one
* op in the compound wants to be cached:
*/
cachethis |= nfsd4_cache_this_op(op);
}
/* Sessions make the DRC unnecessary: */
if (argp->minorversion)
cachethis = false;
argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;
DECODE_TAIL;
}
@ -3115,6 +3190,21 @@ nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
return nfserr;
}
static __be32
nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_free_stateid *free_stateid)
{
__be32 *p;
if (nfserr)
return nfserr;
RESERVE_SPACE(4);
WRITE32(nfserr);
ADJUST_ARGS();
return nfserr;
}
static __be32
nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_sequence *seq)
@ -3138,6 +3228,36 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
return 0;
}
__be32
nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_test_stateid *test_stateid)
{
struct nfsd4_compoundargs *argp;
stateid_t si;
__be32 *p;
int i;
int valid;
restore_buf(test_stateid->ts_saved_args, &test_stateid->ts_savedp);
argp = test_stateid->ts_saved_args;
RESERVE_SPACE(4);
*p++ = htonl(test_stateid->ts_num_ids);
resp->p = p;
nfs4_lock_state();
for (i = 0; i < test_stateid->ts_num_ids; i++) {
nfsd4_decode_stateid(argp, &si);
valid = nfs4_validate_stateid(&si, test_stateid->ts_has_session);
RESERVE_SPACE(4);
*p++ = htonl(valid);
resp->p = p;
}
nfs4_unlock_state();
return nfserr;
}
static __be32
nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
{
@ -3196,7 +3316,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
[OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id,
[OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session,
[OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session,
[OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
[OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid,
[OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
[OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop,
[OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop,
@ -3206,7 +3326,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
[OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name,
[OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence,
[OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop,
[OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
[OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid,
[OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
[OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop,
[OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop,
@ -3319,8 +3439,11 @@ nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
return xdr_ressize_check(rqstp, p);
}
void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp)
{
struct svc_rqst *rqstp = rq;
struct nfsd4_compoundargs *args = rqstp->rq_argp;
if (args->ops != args->iops) {
kfree(args->ops);
args->ops = args->iops;
@ -3333,13 +3456,12 @@ void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
tb->release(tb->buf);
kfree(tb);
}
return 1;
}
int
nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
{
__be32 status;
args->p = p;
args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
args->pagelist = rqstp->rq_arg.pages;
@ -3349,11 +3471,7 @@ nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_comp
args->ops = args->iops;
args->rqstp = rqstp;
status = nfsd4_decode_compound(args);
if (status) {
nfsd4_release_compoundargs(args);
}
return !status;
return !nfsd4_decode_compound(args);
}
int

3
fs/nfsd/nfscache.c
View file

@ -118,7 +118,7 @@ hash_refile(struct svc_cacherep *rp)
* Note that no operation within the loop may sleep.
*/
int
nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
nfsd_cache_lookup(struct svc_rqst *rqstp)
{
struct hlist_node *hn;
struct hlist_head *rh;
@ -128,6 +128,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
vers = rqstp->rq_vers,
proc = rqstp->rq_proc;
unsigned long age;
int type = rqstp->rq_cachetype;
int rtn;
rqstp->rq_cacherep = NULL;

343
fs/nfsd/nfsctl.c
View file

@ -24,15 +24,6 @@
*/
enum {
NFSD_Root = 1,
#ifdef CONFIG_NFSD_DEPRECATED
NFSD_Svc,
NFSD_Add,
NFSD_Del,
NFSD_Export,
NFSD_Unexport,
NFSD_Getfd,
NFSD_Getfs,
#endif
NFSD_List,
NFSD_Export_features,
NFSD_Fh,
@ -59,15 +50,6 @@ enum {
/*
* write() for these nodes.
*/
#ifdef CONFIG_NFSD_DEPRECATED
static ssize_t write_svc(struct file *file, char *buf, size_t size);
static ssize_t write_add(struct file *file, char *buf, size_t size);
static ssize_t write_del(struct file *file, char *buf, size_t size);
static ssize_t write_export(struct file *file, char *buf, size_t size);
static ssize_t write_unexport(struct file *file, char *buf, size_t size);
static ssize_t write_getfd(struct file *file, char *buf, size_t size);
static ssize_t write_getfs(struct file *file, char *buf, size_t size);
#endif
static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
@ -83,15 +65,6 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
#endif
static ssize_t (*write_op[])(struct file *, char *, size_t) = {
#ifdef CONFIG_NFSD_DEPRECATED
[NFSD_Svc] = write_svc,
[NFSD_Add] = write_add,
[NFSD_Del] = write_del,
[NFSD_Export] = write_export,
[NFSD_Unexport] = write_unexport,
[NFSD_Getfd] = write_getfd,
[NFSD_Getfs] = write_getfs,
#endif
[NFSD_Fh] = write_filehandle,
[NFSD_FO_UnlockIP] = write_unlock_ip,
[NFSD_FO_UnlockFS] = write_unlock_fs,
@ -130,16 +103,6 @@ static ssize_t nfsctl_transaction_write(struct file *file, const char __user *bu
static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
{
#ifdef CONFIG_NFSD_DEPRECATED
static int warned;
if (file->f_dentry->d_name.name[0] == '.' && !warned) {
printk(KERN_INFO
"Warning: \"%s\" uses deprecated NFSD interface: %s."
" This will be removed in 2.6.40\n",
current->comm, file->f_dentry->d_name.name);
warned = 1;
}
#endif
if (! file->private_data) {
/* An attempt to read a transaction file without writing
* causes a 0-byte write so that the file can return
@ -226,303 +189,6 @@ static const struct file_operations pool_stats_operations = {
* payload - write methods
*/
#ifdef CONFIG_NFSD_DEPRECATED
/**
* write_svc - Start kernel's NFSD server
*
* Deprecated. /proc/fs/nfsd/threads is preferred.
* Function remains to support old versions of nfs-utils.
*
* Input:
* buf: struct nfsctl_svc
* svc_port: port number of this
* server's listener
* svc_nthreads: number of threads to start
* size: size in bytes of passed in nfsctl_svc
* Output:
* On success: returns zero
* On error: return code is negative errno value
*/
static ssize_t write_svc(struct file *file, char *buf, size_t size)
{
struct nfsctl_svc *data;
int err;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_svc*) buf;
err = nfsd_svc(data->svc_port, data->svc_nthreads);
if (err < 0)
return err;
return 0;
}
/**
* write_add - Add or modify client entry in auth unix cache
*
* Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
* Function remains to support old versions of nfs-utils.
*
* Input:
* buf: struct nfsctl_client
* cl_ident: '\0'-terminated C string
* containing domain name
* of client
* cl_naddr: no. of items in cl_addrlist
* cl_addrlist: array of client addresses
* cl_fhkeytype: ignored
* cl_fhkeylen: ignored
* cl_fhkey: ignored
* size: size in bytes of passed in nfsctl_client
* Output:
* On success: returns zero
* On error: return code is negative errno value
*
* Note: Only AF_INET client addresses are passed in, since
* nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
*/
static ssize_t write_add(struct file *file, char *buf, size_t size)
{
struct nfsctl_client *data;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_client *)buf;
return exp_addclient(data);
}
/**
* write_del - Remove client from auth unix cache
*
* Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
* Function remains to support old versions of nfs-utils.
*
* Input:
* buf: struct nfsctl_client
* cl_ident: '\0'-terminated C string
* containing domain name
* of client
* cl_naddr: ignored
* cl_addrlist: ignored
* cl_fhkeytype: ignored
* cl_fhkeylen: ignored
* cl_fhkey: ignored
* size: size in bytes of passed in nfsctl_client
* Output:
* On success: returns zero
* On error: return code is negative errno value
*
* Note: Only AF_INET client addresses are passed in, since
* nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
*/
static ssize_t write_del(struct file *file, char *buf, size_t size)
{
struct nfsctl_client *data;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_client *)buf;
return exp_delclient(data);
}
/**
* write_export - Export part or all of a local file system
*
* Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
* Function remains to support old versions of nfs-utils.
*
* Input:
* buf: struct nfsctl_export
* ex_client: '\0'-terminated C string
* containing domain name
* of client allowed to access
* this export
* ex_path: '\0'-terminated C string
* containing pathname of
* directory in local file system
* ex_dev: fsid to use for this export
* ex_ino: ignored
* ex_flags: export flags for this export
* ex_anon_uid: UID to use for anonymous
* requests
* ex_anon_gid: GID to use for anonymous
* requests
* size: size in bytes of passed in nfsctl_export
* Output:
* On success: returns zero
* On error: return code is negative errno value
*/
static ssize_t write_export(struct file *file, char *buf, size_t size)
{
struct nfsctl_export *data;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_export*)buf;
return exp_export(data);
}
/**
* write_unexport - Unexport a previously exported file system
*
* Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
* Function remains to support old versions of nfs-utils.
*
* Input:
* buf: struct nfsctl_export
* ex_client: '\0'-terminated C string
* containing domain name
* of client no longer allowed
* to access this export
* ex_path: '\0'-terminated C string
* containing pathname of
* directory in local file system
* ex_dev: ignored
* ex_ino: ignored
* ex_flags: ignored
* ex_anon_uid: ignored
* ex_anon_gid: ignored
* size: size in bytes of passed in nfsctl_export
* Output:
* On success: returns zero
* On error: return code is negative errno value
*/
static ssize_t write_unexport(struct file *file, char *buf, size_t size)
{
struct nfsctl_export *data;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_export*)buf;
return exp_unexport(data);
}
/**
* write_getfs - Get a variable-length NFS file handle by path
*
* Deprecated. /proc/fs/nfsd/filehandle is preferred.
* Function remains to support old versions of nfs-utils.
*
* Input:
* buf: struct nfsctl_fsparm
* gd_addr: socket address of client
* gd_path: '\0'-terminated C string
* containing pathname of
* directory in local file system
* gd_maxlen: maximum size of returned file
* handle
* size: size in bytes of passed in nfsctl_fsparm
* Output:
* On success: passed-in buffer filled with a knfsd_fh structure
* (a variable-length raw NFS file handle);
* return code is the size in bytes of the file handle
* On error: return code is negative errno value
*
* Note: Only AF_INET client addresses are passed in, since gd_addr
* is the same size as a struct sockaddr_in.
*/
static ssize_t write_getfs(struct file *file, char *buf, size_t size)
{
struct nfsctl_fsparm *data;
struct sockaddr_in *sin;
struct auth_domain *clp;
int err = 0;
struct knfsd_fh *res;
struct in6_addr in6;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_fsparm*)buf;
err = -EPROTONOSUPPORT;
if (data->gd_addr.sa_family != AF_INET)
goto out;
sin = (struct sockaddr_in *)&data->gd_addr;
if (data->gd_maxlen > NFS3_FHSIZE)
data->gd_maxlen = NFS3_FHSIZE;
res = (struct knfsd_fh*)buf;
exp_readlock();
ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
clp = auth_unix_lookup(&init_net, &in6);
if (!clp)
err = -EPERM;
else {
err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
auth_domain_put(clp);
}
exp_readunlock();
if (err == 0)
err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
out:
return err;
}
/**
* write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
*
* Deprecated. /proc/fs/nfsd/filehandle is preferred.
* Function remains to support old versions of nfs-utils.
*
* Input:
* buf: struct nfsctl_fdparm
* gd_addr: socket address of client
* gd_path: '\0'-terminated C string
* containing pathname of
* directory in local file system
* gd_version: fdparm structure version
* size: size in bytes of passed in nfsctl_fdparm
* Output:
* On success: passed-in buffer filled with nfsctl_res
* (a fixed-length raw NFS file handle);
* return code is the size in bytes of the file handle
* On error: return code is negative errno value
*
* Note: Only AF_INET client addresses are passed in, since gd_addr
* is the same size as a struct sockaddr_in.
*/
static ssize_t write_getfd(struct file *file, char *buf, size_t size)
{
struct nfsctl_fdparm *data;
struct sockaddr_in *sin;
struct auth_domain *clp;
int err = 0;
struct knfsd_fh fh;
char *res;
struct in6_addr in6;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_fdparm*)buf;
err = -EPROTONOSUPPORT;
if (data->gd_addr.sa_family != AF_INET)
goto out;
err = -EINVAL;
if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
goto out;
res = buf;
sin = (struct sockaddr_in *)&data->gd_addr;
exp_readlock();
ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
clp = auth_unix_lookup(&init_net, &in6);
if (!clp)
err = -EPERM;
else {
err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
auth_domain_put(clp);
}
exp_readunlock();
if (err == 0) {
memset(res,0, NFS_FHSIZE);
memcpy(res, &fh.fh_base, fh.fh_size);
err = NFS_FHSIZE;
}
out:
return err;
}
#endif /* CONFIG_NFSD_DEPRECATED */
/**
* write_unlock_ip - Release all locks used by a client
@ -1397,15 +1063,6 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
{
static struct tree_descr nfsd_files[] = {
#ifdef CONFIG_NFSD_DEPRECATED
[NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
[NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
[NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
[NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
[NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
[NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
#endif
[NFSD_List] = {"exports", &exports_operations, S_IRUGO},
[NFSD_Export_features] = {"export_features",
&export_features_operations, S_IRUGO},

33
fs/nfsd/nfssvc.c
View file

@ -528,16 +528,9 @@ nfsd(void *vrqstp)
continue;
}
/* Lock the export hash tables for reading. */
exp_readlock();
validate_process_creds();
svc_process(rqstp);
validate_process_creds();
/* Unlock export hash tables */
exp_readunlock();
}
/* Clear signals before calling svc_exit_thread() */
@ -577,8 +570,22 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
rqstp->rq_vers, rqstp->rq_proc);
proc = rqstp->rq_procinfo;
/*
* Give the xdr decoder a chance to change this if it wants
* (necessary in the NFSv4.0 compound case)
*/
rqstp->rq_cachetype = proc->pc_cachetype;
/* Decode arguments */
xdr = proc->pc_decode;
if (xdr && !xdr(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base,
rqstp->rq_argp)) {
dprintk("nfsd: failed to decode arguments!\n");
*statp = rpc_garbage_args;
return 1;
}
/* Check whether we have this call in the cache. */
switch (nfsd_cache_lookup(rqstp, proc->pc_cachetype)) {
switch (nfsd_cache_lookup(rqstp)) {
case RC_INTR:
case RC_DROPIT:
return 0;
@ -588,16 +595,6 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
/* do it */
}
/* Decode arguments */
xdr = proc->pc_decode;
if (xdr && !xdr(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base,
rqstp->rq_argp)) {
dprintk("nfsd: failed to decode arguments!\n");
nfsd_cache_update(rqstp, RC_NOCACHE, NULL);
*statp = rpc_garbage_args;
return 1;
}
/* need to grab the location to store the status, as
* nfsv4 does some encoding while processing
*/

1
fs/nfsd/state.h
View file

@ -482,6 +482,7 @@ extern void nfsd4_recdir_purge_old(void);
extern int nfsd4_create_clid_dir(struct nfs4_client *clp);
extern void nfsd4_remove_clid_dir(struct nfs4_client *clp);
extern void release_session_client(struct nfsd4_session *);
extern __be32 nfs4_validate_stateid(stateid_t *, int);
static inline void
nfs4_put_stateowner(struct nfs4_stateowner *so)

30
fs/nfsd/xdr4.h
View file

@ -342,6 +342,25 @@ struct nfsd4_setclientid_confirm {
nfs4_verifier sc_confirm;
};
struct nfsd4_saved_compoundargs {
__be32 *p;
__be32 *end;
int pagelen;
struct page **pagelist;
};
struct nfsd4_test_stateid {
__be32 ts_num_ids;
__be32 ts_has_session;
struct nfsd4_compoundargs *ts_saved_args;
struct nfsd4_saved_compoundargs ts_savedp;
};
struct nfsd4_free_stateid {
stateid_t fr_stateid; /* request */
__be32 fr_status; /* response */
};
/* also used for NVERIFY */
struct nfsd4_verify {
u32 ve_bmval[3]; /* request */
@ -432,10 +451,14 @@ struct nfsd4_op {
struct nfsd4_destroy_session destroy_session;
struct nfsd4_sequence sequence;
struct nfsd4_reclaim_complete reclaim_complete;
struct nfsd4_test_stateid test_stateid;
struct nfsd4_free_stateid free_stateid;
} u;
struct nfs4_replay * replay;
};
bool nfsd4_cache_this_op(struct nfsd4_op *);
struct nfsd4_compoundargs {
/* scratch variables for XDR decode */
__be32 * p;
@ -458,6 +481,7 @@ struct nfsd4_compoundargs {
u32 opcnt;
struct nfsd4_op *ops;
struct nfsd4_op iops[8];
int cachetype;
};
struct nfsd4_compoundres {
@ -559,11 +583,15 @@ extern __be32
nfsd4_release_lockowner(struct svc_rqst *rqstp,
struct nfsd4_compound_state *,
struct nfsd4_release_lockowner *rlockowner);
extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
extern int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp);
extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
extern __be32 nfsd4_renew(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, clientid_t *clid);
extern __be32 nfsd4_test_stateid(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, struct nfsd4_test_stateid *test_stateid);
extern __be32 nfsd4_free_stateid(struct svc_rqst *rqstp,
struct nfsd4_compound_state *, struct nfsd4_free_stateid *free_stateid);
#endif
/*

9
include/linux/compat.h
View file

@ -438,16 +438,7 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
struct compat_timespec __user *tsp,
const compat_sigset_t __user *sigmask,
compat_size_t sigsetsize);
#if (defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)) && \
!defined(CONFIG_NFSD_DEPRECATED)
union compat_nfsctl_res;
struct compat_nfsctl_arg;
asmlinkage long compat_sys_nfsservctl(int cmd,
struct compat_nfsctl_arg __user *arg,
union compat_nfsctl_res __user *res);
#else
asmlinkage long compat_sys_nfsservctl(int cmd, void *notused, void *notused2);
#endif
asmlinkage long compat_sys_signalfd4(int ufd,
const compat_sigset_t __user *sigmask,
compat_size_t sigsetsize, int flags);

12
include/linux/fs.h
View file

@ -1072,12 +1072,12 @@ struct file_lock_operations {
};
struct lock_manager_operations {
int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
void (*fl_notify)(struct file_lock *); /* unblock callback */
int (*fl_grant)(struct file_lock *, struct file_lock *, int);
void (*fl_release_private)(struct file_lock *);
void (*fl_break)(struct file_lock *);
int (*fl_change)(struct file_lock **, int);
int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
void (*lm_notify)(struct file_lock *); /* unblock callback */
int (*lm_grant)(struct file_lock *, struct file_lock *, int);
void (*lm_release_private)(struct file_lock *);
void (*lm_break)(struct file_lock *);
int (*lm_change)(struct file_lock **, int);
};
struct lock_manager {

2
include/linux/nfsd/export.h
View file

@ -133,8 +133,6 @@ __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
int nfsd_export_init(void);
void nfsd_export_shutdown(void);
void nfsd_export_flush(void);
void exp_readlock(void);
void exp_readunlock(void);
struct svc_export * rqst_exp_get_by_name(struct svc_rqst *,
struct path *);
struct svc_export * rqst_exp_parent(struct svc_rqst *,

9
include/linux/sunrpc/cache.h
View file

@ -256,13 +256,4 @@ static inline time_t get_expiry(char **bpp)
return rv - boot.tv_sec;
}
#ifdef CONFIG_NFSD_DEPRECATED
static inline void sunrpc_invalidate(struct cache_head *h,
struct cache_detail *detail)
{
h->expiry_time = seconds_since_boot() - 1;
detail->nextcheck = seconds_since_boot();
}
#endif /* CONFIG_NFSD_DEPRECATED */
#endif /* _LINUX_SUNRPC_CACHE_H_ */

1
include/linux/sunrpc/svc.h
View file

@ -273,6 +273,7 @@ struct svc_rqst {
/* Catering to nfsd */
struct auth_domain * rq_client; /* RPC peer info */
struct auth_domain * rq_gssclient; /* "gss/"-style peer info */
int rq_cachetype;
struct svc_cacherep * rq_cacherep; /* cache info */
int rq_splice_ok; /* turned off in gss privacy
* to prevent encrypting page

7
net/sunrpc/auth_gss/gss_krb5_mech.c
View file

@ -744,6 +744,13 @@ static struct pf_desc gss_kerberos_pfs[] = {
},
};
MODULE_ALIAS("rpc-auth-gss-krb5");
MODULE_ALIAS("rpc-auth-gss-krb5i");
MODULE_ALIAS("rpc-auth-gss-krb5p");
MODULE_ALIAS("rpc-auth-gss-390003");
MODULE_ALIAS("rpc-auth-gss-390004");
MODULE_ALIAS("rpc-auth-gss-390005");
static struct gss_api_mech gss_kerberos_mech = {
.gm_name = "krb5",
.gm_owner = THIS_MODULE,

32
net/sunrpc/auth_gss/gss_mech_switch.c
View file

@ -141,7 +141,7 @@ gss_mech_get(struct gss_api_mech *gm)
EXPORT_SYMBOL_GPL(gss_mech_get);
struct gss_api_mech *
gss_mech_get_by_name(const char *name)
_gss_mech_get_by_name(const char *name)
{
struct gss_api_mech *pos, *gm = NULL;
@ -158,6 +158,17 @@ gss_mech_get_by_name(const char *name)
}
struct gss_api_mech * gss_mech_get_by_name(const char *name)
{
struct gss_api_mech *gm = NULL;
gm = _gss_mech_get_by_name(name);
if (!gm) {
request_module("rpc-auth-gss-%s", name);
gm = _gss_mech_get_by_name(name);
}
return gm;
}
EXPORT_SYMBOL_GPL(gss_mech_get_by_name);
struct gss_api_mech *
@ -194,10 +205,9 @@ mech_supports_pseudoflavor(struct gss_api_mech *gm, u32 pseudoflavor)
return 0;
}
struct gss_api_mech *
gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
struct gss_api_mech *_gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
{
struct gss_api_mech *pos, *gm = NULL;
struct gss_api_mech *gm = NULL, *pos;
spin_lock(&registered_mechs_lock);
list_for_each_entry(pos, &registered_mechs, gm_list) {
@ -213,6 +223,20 @@ gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
return gm;
}
struct gss_api_mech *
gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
{
struct gss_api_mech *gm;
gm = _gss_mech_get_by_pseudoflavor(pseudoflavor);
if (!gm) {
request_module("rpc-auth-gss-%u", pseudoflavor);
gm = _gss_mech_get_by_pseudoflavor(pseudoflavor);
}
return gm;
}
EXPORT_SYMBOL_GPL(gss_mech_get_by_pseudoflavor);
int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr)

11
net/sunrpc/svc_xprt.c
View file

@ -902,12 +902,13 @@ void svc_delete_xprt(struct svc_xprt *xprt)
if (!test_and_set_bit(XPT_DETACHED, &xprt->xpt_flags))
list_del_init(&xprt->xpt_list);
/*
* We used to delete the transport from whichever list
* it's sk_xprt.xpt_ready node was on, but we don't actually
* need to. This is because the only time we're called
* while still attached to a queue, the queue itself
* is about to be destroyed (in svc_destroy).
* The only time we're called while xpt_ready is still on a list
* is while the list itself is about to be destroyed (in
* svc_destroy). BUT svc_xprt_enqueue could still be attempting
* to add new entries to the sp_sockets list, so we can't leave
* a freed xprt on it.
*/
list_del_init(&xprt->xpt_ready);
if (test_bit(XPT_TEMP, &xprt->xpt_flags))
serv->sv_tmpcnt--;
spin_unlock_bh(&serv->sv_lock);

79
net/sunrpc/svcauth_unix.c
View file

@ -30,12 +30,10 @@
struct unix_domain {
struct auth_domain h;
#ifdef CONFIG_NFSD_DEPRECATED
int addr_changes;
#endif /* CONFIG_NFSD_DEPRECATED */
/* other stuff later */
};
extern struct auth_ops svcauth_null;
extern struct auth_ops svcauth_unix;
static void svcauth_unix_domain_release(struct auth_domain *dom)
@ -74,9 +72,6 @@ struct auth_domain *unix_domain_find(char *name)
return NULL;
}
new->h.flavour = &svcauth_unix;
#ifdef CONFIG_NFSD_DEPRECATED
new->addr_changes = 0;
#endif /* CONFIG_NFSD_DEPRECATED */
rv = auth_domain_lookup(name, &new->h);
}
}
@ -95,9 +90,6 @@ struct ip_map {
char m_class[8]; /* e.g. "nfsd" */
struct in6_addr m_addr;
struct unix_domain *m_client;
#ifdef CONFIG_NFSD_DEPRECATED
int m_add_change;
#endif /* CONFIG_NFSD_DEPRECATED */
};
static void ip_map_put(struct kref *kref)
@ -151,9 +143,6 @@ static void update(struct cache_head *cnew, struct cache_head *citem)
kref_get(&item->m_client->h.ref);
new->m_client = item->m_client;
#ifdef CONFIG_NFSD_DEPRECATED
new->m_add_change = item->m_add_change;
#endif /* CONFIG_NFSD_DEPRECATED */
}
static struct cache_head *ip_map_alloc(void)
{
@ -338,16 +327,6 @@ static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm,
ip.h.flags = 0;
if (!udom)
set_bit(CACHE_NEGATIVE, &ip.h.flags);
#ifdef CONFIG_NFSD_DEPRECATED
else {
ip.m_add_change = udom->addr_changes;
/* if this is from the legacy set_client system call,
* we need m_add_change to be one higher
*/
if (expiry == NEVER)
ip.m_add_change++;
}
#endif /* CONFIG_NFSD_DEPRECATED */
ip.h.expiry_time = expiry;
ch = sunrpc_cache_update(cd, &ip.h, &ipm->h,
hash_str(ipm->m_class, IP_HASHBITS) ^
@ -367,62 +346,6 @@ static inline int ip_map_update(struct net *net, struct ip_map *ipm,
return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry);
}
#ifdef CONFIG_NFSD_DEPRECATED
int auth_unix_add_addr(struct net *net, struct in6_addr *addr, struct auth_domain *dom)
{
struct unix_domain *udom;
struct ip_map *ipmp;
if (dom->flavour != &svcauth_unix)
return -EINVAL;
udom = container_of(dom, struct unix_domain, h);
ipmp = ip_map_lookup(net, "nfsd", addr);
if (ipmp)
return ip_map_update(net, ipmp, udom, NEVER);
else
return -ENOMEM;
}
EXPORT_SYMBOL_GPL(auth_unix_add_addr);
int auth_unix_forget_old(struct auth_domain *dom)
{
struct unix_domain *udom;
if (dom->flavour != &svcauth_unix)
return -EINVAL;
udom = container_of(dom, struct unix_domain, h);
udom->addr_changes++;
return 0;
}
EXPORT_SYMBOL_GPL(auth_unix_forget_old);
struct auth_domain *auth_unix_lookup(struct net *net, struct in6_addr *addr)
{
struct ip_map *ipm;
struct auth_domain *rv;
struct sunrpc_net *sn;
sn = net_generic(net, sunrpc_net_id);
ipm = ip_map_lookup(net, "nfsd", addr);
if (!ipm)
return NULL;
if (cache_check(sn->ip_map_cache, &ipm->h, NULL))
return NULL;
if ((ipm->m_client->addr_changes - ipm->m_add_change) >0) {
sunrpc_invalidate(&ipm->h, sn->ip_map_cache);
rv = NULL;
} else {
rv = &ipm->m_client->h;
kref_get(&rv->ref);
}
cache_put(&ipm->h, sn->ip_map_cache);
return rv;
}
EXPORT_SYMBOL_GPL(auth_unix_lookup);
#endif /* CONFIG_NFSD_DEPRECATED */
void svcauth_unix_purge(void)
{

2
net/sunrpc/svcsock.c
View file

@ -51,6 +51,8 @@
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/xprt.h>
#include "sunrpc.h"
#define RPCDBG_FACILITY RPCDBG_SVCXPRT