Commit 9092131f authored by Linus Torvalds's avatar Linus Torvalds
parents f1b04770 eadf4598
......@@ -1268,6 +1268,7 @@ config NFS_FS
depends on INET
select LOCKD
select SUNRPC
select NFS_ACL_SUPPORT if NFS_V3_ACL
help
If you are connected to some other (usually local) Unix computer
(using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
......@@ -1310,6 +1311,16 @@ config NFS_V3
If unsure, say Y.
config NFS_V3_ACL
bool "Provide client support for the NFSv3 ACL protocol extension"
depends on NFS_V3
help
Implement the NFSv3 ACL protocol extension for manipulating POSIX
Access Control Lists. The server should also be compiled with
the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
If unsure, say N.
config NFS_V4
bool "Provide NFSv4 client support (EXPERIMENTAL)"
depends on NFS_FS && EXPERIMENTAL
......@@ -1353,6 +1364,7 @@ config NFSD
select LOCKD
select SUNRPC
select EXPORTFS
select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL
help
If you want your Linux box to act as an NFS *server*, so that other
computers on your local network which support NFS can access certain
......@@ -1376,6 +1388,10 @@ config NFSD
To compile the NFS server support as a module, choose M here: the
module will be called nfsd. If unsure, say N.
config NFSD_V2_ACL
bool
depends on NFSD
config NFSD_V3
bool "Provide NFSv3 server support"
depends on NFSD
......@@ -1383,6 +1399,16 @@ config NFSD_V3
If you would like to include the NFSv3 server as well as the NFSv2
server, say Y here. If unsure, say Y.
config NFSD_V3_ACL
bool "Provide server support for the NFSv3 ACL protocol extension"
depends on NFSD_V3
select NFSD_V2_ACL
help
Implement the NFSv3 ACL protocol extension for manipulating POSIX
Access Control Lists on exported file systems. NFS clients should
be compiled with the NFSv3 ACL protocol extension; see the
CONFIG_NFS_V3_ACL option. If unsure, say N.
config NFSD_V4
bool "Provide NFSv4 server support (EXPERIMENTAL)"
depends on NFSD_V3 && EXPERIMENTAL
......@@ -1427,6 +1453,15 @@ config LOCKD_V4
config EXPORTFS
tristate
config NFS_ACL_SUPPORT
tristate
select FS_POSIX_ACL
config NFS_COMMON
bool
depends on NFSD || NFS_FS
default y
config SUNRPC
tristate
......
......@@ -31,6 +31,7 @@ obj-$(CONFIG_BINFMT_FLAT) += binfmt_flat.o
obj-$(CONFIG_FS_MBCACHE) += mbcache.o
obj-$(CONFIG_FS_POSIX_ACL) += posix_acl.o xattr_acl.o
obj-$(CONFIG_NFS_COMMON) += nfs_common/
obj-$(CONFIG_QUOTA) += dquot.o
obj-$(CONFIG_QFMT_V1) += quota_v1.o
......
......@@ -31,7 +31,7 @@ static int reclaimer(void *ptr);
* This is the representation of a blocked client lock.
*/
struct nlm_wait {
struct nlm_wait * b_next; /* linked list */
struct list_head b_list; /* linked list */
wait_queue_head_t b_wait; /* where to wait on */
struct nlm_host * b_host;
struct file_lock * b_lock; /* local file lock */
......@@ -39,27 +39,54 @@ struct nlm_wait {
u32 b_status; /* grant callback status */
};
static struct nlm_wait * nlm_blocked;
static LIST_HEAD(nlm_blocked);
/*
* Block on a lock
* Queue up a lock for blocking so that the GRANTED request can see it
*/
int
nlmclnt_block(struct nlm_host *host, struct file_lock *fl, u32 *statp)
int nlmclnt_prepare_block(struct nlm_rqst *req, struct nlm_host *host, struct file_lock *fl)
{
struct nlm_wait *block;
BUG_ON(req->a_block != NULL);
block = kmalloc(sizeof(*block), GFP_KERNEL);
if (block == NULL)
return -ENOMEM;
block->b_host = host;
block->b_lock = fl;
init_waitqueue_head(&block->b_wait);
block->b_status = NLM_LCK_BLOCKED;
list_add(&block->b_list, &nlm_blocked);
req->a_block = block;
return 0;
}
void nlmclnt_finish_block(struct nlm_rqst *req)
{
struct nlm_wait block, **head;
int err;
u32 pstate;
struct nlm_wait *block = req->a_block;
block.b_host = host;
block.b_lock = fl;
init_waitqueue_head(&block.b_wait);
block.b_status = NLM_LCK_BLOCKED;
block.b_next = nlm_blocked;
nlm_blocked = █
if (block == NULL)
return;
req->a_block = NULL;
list_del(&block->b_list);
kfree(block);
}
/*
* Block on a lock
*/
long nlmclnt_block(struct nlm_rqst *req, long timeout)
{
struct nlm_wait *block = req->a_block;
long ret;
/* Remember pseudo nsm state */
pstate = host->h_state;
/* A borken server might ask us to block even if we didn't
* request it. Just say no!
*/
if (!req->a_args.block)
return -EAGAIN;
/* Go to sleep waiting for GRANT callback. Some servers seem
* to lose callbacks, however, so we're going to poll from
......@@ -69,28 +96,16 @@ nlmclnt_block(struct nlm_host *host, struct file_lock *fl, u32 *statp)
* a 1 minute timeout would do. See the comment before
* nlmclnt_lock for an explanation.
*/
sleep_on_timeout(&block.b_wait, 30*HZ);
for (head = &nlm_blocked; *head; head = &(*head)->b_next) {
if (*head == &block) {
*head = block.b_next;
break;
}
}
ret = wait_event_interruptible_timeout(block->b_wait,
block->b_status != NLM_LCK_BLOCKED,
timeout);
if (!signalled()) {
*statp = block.b_status;
return 0;
if (block->b_status != NLM_LCK_BLOCKED) {
req->a_res.status = block->b_status;
block->b_status = NLM_LCK_BLOCKED;
}
/* Okay, we were interrupted. Cancel the pending request
* unless the server has rebooted.
*/
if (pstate == host->h_state && (err = nlmclnt_cancel(host, fl)) < 0)
printk(KERN_NOTICE
"lockd: CANCEL call failed (errno %d)\n", -err);
return -ERESTARTSYS;
return ret;
}
/*
......@@ -100,27 +115,23 @@ u32
nlmclnt_grant(struct nlm_lock *lock)
{
struct nlm_wait *block;
u32 res = nlm_lck_denied;
/*
* Look up blocked request based on arguments.
* Warning: must not use cookie to match it!
*/
for (block = nlm_blocked; block; block = block->b_next) {
if (nlm_compare_locks(block->b_lock, &lock->fl))
break;
list_for_each_entry(block, &nlm_blocked, b_list) {
if (nlm_compare_locks(block->b_lock, &lock->fl)) {
/* Alright, we found a lock. Set the return status
* and wake up the caller
*/
block->b_status = NLM_LCK_GRANTED;
wake_up(&block->b_wait);
res = nlm_granted;
}
}
/* Ooops, no blocked request found. */
if (block == NULL)
return nlm_lck_denied;
/* Alright, we found the lock. Set the return status and
* wake up the caller.
*/
block->b_status = NLM_LCK_GRANTED;
wake_up(&block->b_wait);
return nlm_granted;
return res;
}
/*
......@@ -230,7 +241,7 @@ restart:
host->h_reclaiming = 0;
/* Now, wake up all processes that sleep on a blocked lock */
for (block = nlm_blocked; block; block = block->b_next) {
list_for_each_entry(block, &nlm_blocked, b_list) {
if (block->b_host == host) {
block->b_status = NLM_LCK_DENIED_GRACE_PERIOD;
wake_up(&block->b_wait);
......
......@@ -21,6 +21,7 @@
#define NLMDBG_FACILITY NLMDBG_CLIENT
#define NLMCLNT_GRACE_WAIT (5*HZ)
#define NLMCLNT_POLL_TIMEOUT (30*HZ)
static int nlmclnt_test(struct nlm_rqst *, struct file_lock *);
static int nlmclnt_lock(struct nlm_rqst *, struct file_lock *);
......@@ -553,7 +554,8 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
{
struct nlm_host *host = req->a_host;
struct nlm_res *resp = &req->a_res;
int status;
long timeout;
int status;
if (!host->h_monitored && nsm_monitor(host) < 0) {
printk(KERN_NOTICE "lockd: failed to monitor %s\n",
......@@ -562,15 +564,32 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
goto out;
}
do {
if ((status = nlmclnt_call(req, NLMPROC_LOCK)) >= 0) {
if (resp->status != NLM_LCK_BLOCKED)
break;
status = nlmclnt_block(host, fl, &resp->status);
}
if (req->a_args.block) {
status = nlmclnt_prepare_block(req, host, fl);
if (status < 0)
goto out;
} while (resp->status == NLM_LCK_BLOCKED && req->a_args.block);
}
for(;;) {
status = nlmclnt_call(req, NLMPROC_LOCK);
if (status < 0)
goto out_unblock;
if (resp->status != NLM_LCK_BLOCKED)
break;
/* Wait on an NLM blocking lock */
timeout = nlmclnt_block(req, NLMCLNT_POLL_TIMEOUT);
/* Did a reclaimer thread notify us of a server reboot? */
if (resp->status == NLM_LCK_DENIED_GRACE_PERIOD)
continue;
if (resp->status != NLM_LCK_BLOCKED)
break;
if (timeout >= 0)
continue;
/* We were interrupted. Send a CANCEL request to the server
* and exit
*/
status = (int)timeout;
goto out_unblock;
}
if (resp->status == NLM_LCK_GRANTED) {
fl->fl_u.nfs_fl.state = host->h_state;
......@@ -579,6 +598,11 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl)
do_vfs_lock(fl);
}
status = nlm_stat_to_errno(resp->status);
out_unblock:
nlmclnt_finish_block(req);
/* Cancel the blocked request if it is still pending */
if (resp->status == NLM_LCK_BLOCKED)
nlmclnt_cancel(host, fl);
out:
nlmclnt_release_lockargs(req);
return status;
......
......@@ -189,17 +189,15 @@ nlm_bind_host(struct nlm_host *host)
goto forgetit;
xprt_set_timeout(&xprt->timeout, 5, nlmsvc_timeout);
xprt->nocong = 1; /* No congestion control for NLM */
xprt->resvport = 1; /* NLM requires a reserved port */
/* Existing NLM servers accept AUTH_UNIX only */
clnt = rpc_create_client(xprt, host->h_name, &nlm_program,
host->h_version, RPC_AUTH_UNIX);
if (IS_ERR(clnt)) {
xprt_destroy(xprt);
if (IS_ERR(clnt))
goto forgetit;
}
clnt->cl_autobind = 1; /* turn on pmap queries */
xprt->nocong = 1; /* No congestion control for NLM */
xprt->resvport = 1; /* NLM requires a reserved port */
host->h_rpcclnt = clnt;
}
......
......@@ -115,20 +115,19 @@ nsm_create(void)
xprt = xprt_create_proto(IPPROTO_UDP, &sin, NULL);
if (IS_ERR(xprt))
return (struct rpc_clnt *)xprt;
xprt->resvport = 1; /* NSM requires a reserved port */
clnt = rpc_create_client(xprt, "localhost",
&nsm_program, SM_VERSION,
RPC_AUTH_NULL);
if (IS_ERR(clnt))
goto out_destroy;
goto out_err;
clnt->cl_softrtry = 1;
clnt->cl_chatty = 1;
clnt->cl_oneshot = 1;
xprt->resvport = 1; /* NSM requires a reserved port */
return clnt;
out_destroy:
xprt_destroy(xprt);
out_err:
return clnt;
}
......
......@@ -1548,6 +1548,8 @@ int fcntl_getlk(struct file *filp, struct flock __user *l)
if (filp->f_op && filp->f_op->lock) {
error = filp->f_op->lock(filp, F_GETLK, &file_lock);
if (file_lock.fl_ops && file_lock.fl_ops->fl_release_private)
file_lock.fl_ops->fl_release_private(&file_lock);
if (error < 0)
goto out;
else
......@@ -1690,6 +1692,8 @@ int fcntl_getlk64(struct file *filp, struct flock64 __user *l)
if (filp->f_op && filp->f_op->lock) {
error = filp->f_op->lock(filp, F_GETLK, &file_lock);
if (file_lock.fl_ops && file_lock.fl_ops->fl_release_private)
file_lock.fl_ops->fl_release_private(&file_lock);
if (error < 0)
goto out;
else
......@@ -1873,6 +1877,8 @@ void locks_remove_flock(struct file *filp)
.fl_end = OFFSET_MAX,
};
filp->f_op->flock(filp, F_SETLKW, &fl);
if (fl.fl_ops && fl.fl_ops->fl_release_private)
fl.fl_ops->fl_release_private(&fl);
}
lock_kernel();
......
......@@ -8,6 +8,7 @@ nfs-y := dir.o file.o inode.o nfs2xdr.o pagelist.o \
proc.o read.o symlink.o unlink.o write.o
nfs-$(CONFIG_ROOT_NFS) += nfsroot.o mount_clnt.o
nfs-$(CONFIG_NFS_V3) += nfs3proc.o nfs3xdr.o
nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
delegation.o idmap.o \
callback.o callback_xdr.o callback_proc.o
......
......@@ -14,6 +14,7 @@
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "callback.h"
#define NFSDBG_FACILITY NFSDBG_CALLBACK
......
......@@ -8,6 +8,7 @@
#include <linux/config.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "callback.h"
#include "delegation.h"
......
......@@ -10,6 +10,7 @@
#include <linux/sunrpc/svc.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "callback.h"
#define CB_OP_TAGLEN_MAXSZ (512)
......@@ -410,7 +411,6 @@ static int nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp
xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base);
p = (uint32_t*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len);
rqstp->rq_res.head[0].iov_len = PAGE_SIZE;
xdr_init_encode(&xdr_out, &rqstp->rq_res, p);
decode_compound_hdr_arg(&xdr_in, &hdr_arg);
......
......@@ -16,6 +16,7 @@
#include <linux/nfs_fs.h>
#include <linux/nfs_xdr.h>
#include "nfs4_fs.h"
#include "delegation.h"
static struct nfs_delegation *nfs_alloc_delegation(void)
......
This diff is collapsed.
......@@ -517,7 +517,7 @@ retry:
result = tot_bytes;
out:
nfs_end_data_update_defer(inode);
nfs_end_data_update(inode);
nfs_writedata_free(wdata);
return result;
......
......@@ -71,6 +71,18 @@ struct inode_operations nfs_file_inode_operations = {
.setattr = nfs_setattr,
};
#ifdef CONFIG_NFS_V3
struct inode_operations nfs3_file_inode_operations = {
.permission = nfs_permission,
.getattr = nfs_getattr,
.setattr = nfs_setattr,
.listxattr = nfs3_listxattr,
.getxattr = nfs3_getxattr,
.setxattr = nfs3_setxattr,
.removexattr = nfs3_removexattr,
};
#endif /* CONFIG_NFS_v3 */
/* Hack for future NFS swap support */
#ifndef IS_SWAPFILE
# define IS_SWAPFILE(inode) (0)
......@@ -115,6 +127,21 @@ nfs_file_release(struct inode *inode, struct file *filp)
return NFS_PROTO(inode)->file_release(inode, filp);
}
/**
* nfs_revalidate_file - Revalidate the page cache & related metadata
* @inode - pointer to inode struct
* @file - pointer to file
*/
static int nfs_revalidate_file(struct inode *inode, struct file *filp)
{
int retval = 0;
if ((NFS_FLAGS(inode) & NFS_INO_REVAL_PAGECACHE) || nfs_attribute_timeout(inode))
retval = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
nfs_revalidate_mapping(inode, filp->f_mapping);
return 0;
}
/**
* nfs_revalidate_size - Revalidate the file size
* @inode - pointer to inode struct
......@@ -137,7 +164,8 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp)
goto force_reval;
if (nfsi->npages != 0)
return 0;
return nfs_revalidate_inode(server, inode);
if (!(NFS_FLAGS(inode) & NFS_INO_REVAL_PAGECACHE) && !nfs_attribute_timeout(inode))
return 0;
force_reval:
return __nfs_revalidate_inode(server, inode);
}
......@@ -198,7 +226,7 @@ nfs_file_read(struct kiocb *iocb, char __user * buf, size_t count, loff_t pos)
dentry->d_parent->d_name.name, dentry->d_name.name,
(unsigned long) count, (unsigned long) pos);
result = nfs_revalidate_inode(NFS_SERVER(inode), inode);
result = nfs_revalidate_file(inode, iocb->ki_filp);
if (!result)
result = generic_file_aio_read(iocb, buf, count, pos);
return result;
......@@ -216,7 +244,7 @@ nfs_file_sendfile(struct file *filp, loff_t *ppos, size_t count,
dentry->d_parent->d_name.name, dentry->d_name.name,
(unsigned long) count, (unsigned long long) *ppos);
res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
res = nfs_revalidate_file(inode, filp);
if (!res)
res = generic_file_sendfile(filp, ppos, count, actor, target);
return res;
......@@ -232,7 +260,7 @@ nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
dfprintk(VFS, "nfs: mmap(%s/%s)\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
status = nfs_revalidate_inode(NFS_SERVER(inode), inode);
status = nfs_revalidate_file(inode, file);
if (!status)
status = generic_file_mmap(file, vma);
return status;
......@@ -321,9 +349,15 @@ nfs_file_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t
result = -EBUSY;
if (IS_SWAPFILE(inode))
goto out_swapfile;
result = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (result)
goto out;
/*
* O_APPEND implies that we must revalidate the file length.
*/
if (iocb->ki_filp->f_flags & O_APPEND) {
result = nfs_revalidate_file_size(inode, iocb->ki_filp);
if (result)
goto out;
}
nfs_revalidate_mapping(inode, iocb->ki_filp->f_mapping);
result = count;
if (!count)
......
......@@ -50,6 +50,7 @@
#include <linux/nfs_fs.h>
#include <linux/nfs_idmap.h>
#include "nfs4_fs.h"
#define IDMAP_HASH_SZ 128
......
This diff is collapsed.
......@@ -80,9 +80,7 @@ mnt_create(char *hostname, struct sockaddr_in *srvaddr, int version,
clnt = rpc_create_client(xprt, hostname,
&mnt_program, version,
RPC_AUTH_UNIX);
if (IS_ERR(clnt)) {
xprt_destroy(xprt);
} else {
if (!IS_ERR(clnt)) {
clnt->cl_softrtry = 1;
clnt->cl_chatty = 1;
clnt->cl_oneshot = 1;
......
#include <linux/fs.h>
#include <linux/nfs.h>
#include <linux/nfs3.h>
#include <linux/nfs_fs.h>
#include <linux/xattr_acl.h>
#include <linux/nfsacl.h>
#define NFSDBG_FACILITY NFSDBG_PROC
ssize_t nfs3_listxattr(struct dentry *dentry, char *buffer, size_t size)
{
struct inode *inode = dentry->d_inode;
struct posix_acl *acl;
int pos=0, len=0;
# define output(s) do { \
if (pos + sizeof(s) <= size) { \
memcpy(buffer + pos, s, sizeof(s)); \
pos += sizeof(s); \
} \
len += sizeof(s); \
} while(0)
acl = nfs3_proc_getacl(inode, ACL_TYPE_ACCESS);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
output("system.posix_acl_access");
posix_acl_release(acl);
}
if (S_ISDIR(inode->i_mode)) {
acl = nfs3_proc_getacl(inode, ACL_TYPE_DEFAULT);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
output("system.posix_acl_default");
posix_acl_release(acl);
}
}
# undef output
if (!buffer || len <= size)
return len;
return -ERANGE;
}
ssize_t nfs3_getxattr(struct dentry *dentry, const char *name,
void *buffer, size_t size)
{
struct inode *inode = dentry->d_inode;
struct posix_acl *acl;
int type, error = 0;
if (strcmp(name, XATTR_NAME_ACL_ACCESS) == 0)
type = ACL_TYPE_ACCESS;
else if (strcmp(name, XATTR_NAME_ACL_DEFAULT) == 0)
type = ACL_TYPE_DEFAULT;
else
return -EOPNOTSUPP;
acl = nfs3_proc_getacl(inode, type);
if (IS_ERR(acl))
return PTR_ERR(acl);
else if (acl) {
if (type == ACL_TYPE_ACCESS && acl->a_count == 0)
error = -ENODATA;
else
error = posix_acl_to_xattr(acl, buffer, size);
posix_acl_release(acl);
} else
error = -ENODATA;
return error;
}
int nfs3_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
struct inode *inode = dentry->d_inode;
struct posix_acl *acl;
int type, error;
if (strcmp(name, XATTR_NAME_ACL_ACCESS) == 0)
type = ACL_TYPE_ACCESS;
else if (strcmp(name, XATTR_NAME_ACL_DEFAULT) == 0)
type = ACL_TYPE_DEFAULT;
else
return -EOPNOTSUPP;
acl = posix_acl_from_xattr(value, size);
if (IS_ERR(acl))
return PTR_ERR(acl);
error = nfs3_proc_setacl(inode, type, acl);
posix_acl_release(acl);
return error;
}
int nfs3_removexattr(struct dentry *dentry, const char *name)
{
struct inode *inode = dentry->d_inode;
int type;
if (strcmp(name, XATTR_NAME_ACL_ACCESS) == 0)
type = ACL_TYPE_ACCESS;
else if (strcmp(name, XATTR_NAME_ACL_DEFAULT) == 0)
type = ACL_TYPE_DEFAULT;
else
return -EOPNOTSUPP;
return nfs3_proc_setacl(inode, type, NULL);
}
static void __nfs3_forget_cached_acls(struct nfs_inode *nfsi)
{
if (!IS_ERR(nfsi->acl_access)) {
posix_acl_release(nfsi->acl_access);
nfsi->acl_access = ERR_PTR(-EAGAIN);
}
if (!IS_ERR(nfsi->acl_default)) {
posix_acl_release(nfsi->acl_default);
nfsi->acl_default = ERR_PTR(-EAGAIN);
}
}
void nfs3_forget_cached_acls(struct inode *inode)
{
dprintk("NFS: nfs3_forget_cached_acls(%s/%ld)\n", inode->i_sb->s_id,
inode->i_ino);
spin_lock(&inode->i_lock);
__nfs3_forget_cached_acls(NFS_I(inode));
spin_unlock(&inode->i_lock);
}
static struct posix_acl *nfs3_get_cached_acl(struct inode *inode, int type)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct posix_acl *acl = ERR_PTR(-EINVAL);
spin_lock(&inode->i_lock);
switch(type) {
case ACL_TYPE_ACCESS:
acl = nfsi->acl_access;
break;
case ACL_TYPE_DEFAULT:
acl = nfsi->acl_default;
break;
default:
goto out;
}
if (IS_ERR(acl))
acl = ERR_PTR(-EAGAIN);
else
acl = posix_acl_dup(acl);
out:
spin_unlock(&inode->i_lock);
dprintk("NFS: nfs3_get_cached_acl(%s/%ld, %d) = %p\n", inode->i_sb->s_id,