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-rw-r--r--fs/nfsd/auth.c4
-rw-r--r--fs/nfsd/nfs4callback.c3
-rw-r--r--fs/nfsd/nfs4proc.c5
-rw-r--r--fs/nfsd/nfs4recover.c2
-rw-r--r--fs/nfsd/nfs4state.c79
-rw-r--r--fs/nfsd/nfs4xdr.c2
-rw-r--r--fs/nfsd/nfsctl.c479
-rw-r--r--fs/nfsd/nfsfh.c36
-rw-r--r--fs/nfsd/nfsproc.c1
-rw-r--r--fs/nfsd/vfs.c34
10 files changed, 568 insertions, 77 deletions
diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index 0184fe9b514..c903e04aa21 100644
--- a/fs/nfsd/auth.c
+++ b/fs/nfsd/auth.c
@@ -76,10 +76,10 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
ret = set_groups(new, gi);
put_group_info(gi);
- if (!ret)
+ if (ret < 0)
goto error;
- if (new->uid)
+ if (new->fsuid)
new->cap_effective = cap_drop_nfsd_set(new->cap_effective);
else
new->cap_effective = cap_raise_nfsd_set(new->cap_effective,
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 6d7d8c02c19..c464181b599 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -53,9 +53,6 @@
#define NFSPROC4_CB_NULL 0
#define NFSPROC4_CB_COMPOUND 1
-/* declarations */
-static const struct rpc_call_ops nfs4_cb_null_ops;
-
/* Index of predefined Linux callback client operations */
enum {
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 669461e291a..9fa60a3ad48 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -946,6 +946,11 @@ encode_op:
nfsd4_encode_operation(resp, op);
status = op->status;
}
+
+ dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
+ args->ops, args->opcnt, resp->opcnt, op->opnum,
+ be32_to_cpu(status));
+
if (cstate->replay_owner) {
nfs4_put_stateowner(cstate->replay_owner);
cstate->replay_owner = NULL;
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 0f9d6efaa62..74f7b67567f 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -116,9 +116,9 @@ nfs4_make_rec_clidname(char *dname, struct xdr_netobj *clname)
md5_to_hex(dname, cksum.data);
- kfree(cksum.data);
status = nfs_ok;
out:
+ kfree(cksum.data);
crypto_free_hash(desc.tfm);
out_no_tfm:
return status;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 13e0e074dbb..88db7d3ec12 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2416,6 +2416,26 @@ out:
#define LOCK_HASH_SIZE (1 << LOCK_HASH_BITS)
#define LOCK_HASH_MASK (LOCK_HASH_SIZE - 1)
+static inline u64
+end_offset(u64 start, u64 len)
+{
+ u64 end;
+
+ end = start + len;
+ return end >= start ? end: NFS4_MAX_UINT64;
+}
+
+/* last octet in a range */
+static inline u64
+last_byte_offset(u64 start, u64 len)
+{
+ u64 end;
+
+ BUG_ON(!len);
+ end = start + len;
+ return end > start ? end - 1: NFS4_MAX_UINT64;
+}
+
#define lockownerid_hashval(id) \
((id) & LOCK_HASH_MASK)
@@ -2435,13 +2455,13 @@ static struct list_head lockstateid_hashtbl[STATEID_HASH_SIZE];
static struct nfs4_stateid *
find_stateid(stateid_t *stid, int flags)
{
- struct nfs4_stateid *local = NULL;
+ struct nfs4_stateid *local;
u32 st_id = stid->si_stateownerid;
u32 f_id = stid->si_fileid;
unsigned int hashval;
dprintk("NFSD: find_stateid flags 0x%x\n",flags);
- if ((flags & LOCK_STATE) || (flags & RD_STATE) || (flags & WR_STATE)) {
+ if (flags & (LOCK_STATE | RD_STATE | WR_STATE)) {
hashval = stateid_hashval(st_id, f_id);
list_for_each_entry(local, &lockstateid_hashtbl[hashval], st_hash) {
if ((local->st_stateid.si_stateownerid == st_id) &&
@@ -2449,7 +2469,8 @@ find_stateid(stateid_t *stid, int flags)
return local;
}
}
- if ((flags & OPEN_STATE) || (flags & RD_STATE) || (flags & WR_STATE)) {
+
+ if (flags & (OPEN_STATE | RD_STATE | WR_STATE)) {
hashval = stateid_hashval(st_id, f_id);
list_for_each_entry(local, &stateid_hashtbl[hashval], st_hash) {
if ((local->st_stateid.si_stateownerid == st_id) &&
@@ -2518,8 +2539,8 @@ nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
deny->ld_clientid.cl_id = 0;
}
deny->ld_start = fl->fl_start;
- deny->ld_length = ~(u64)0;
- if (fl->fl_end != ~(u64)0)
+ deny->ld_length = NFS4_MAX_UINT64;
+ if (fl->fl_end != NFS4_MAX_UINT64)
deny->ld_length = fl->fl_end - fl->fl_start + 1;
deny->ld_type = NFS4_READ_LT;
if (fl->fl_type != F_RDLCK)
@@ -2616,7 +2637,7 @@ out:
static int
check_lock_length(u64 offset, u64 length)
{
- return ((length == 0) || ((length != ~(u64)0) &&
+ return ((length == 0) || ((length != NFS4_MAX_UINT64) &&
LOFF_OVERFLOW(offset, length)));
}
@@ -2736,11 +2757,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
file_lock.fl_lmops = &nfsd_posix_mng_ops;
file_lock.fl_start = lock->lk_offset;
- if ((lock->lk_length == ~(u64)0) ||
- LOFF_OVERFLOW(lock->lk_offset, lock->lk_length))
- file_lock.fl_end = ~(u64)0;
- else
- file_lock.fl_end = lock->lk_offset + lock->lk_length - 1;
+ file_lock.fl_end = last_byte_offset(lock->lk_offset, lock->lk_length);
nfs4_transform_lock_offset(&file_lock);
/*
@@ -2781,6 +2798,25 @@ out:
}
/*
+ * The NFSv4 spec allows a client to do a LOCKT without holding an OPEN,
+ * so we do a temporary open here just to get an open file to pass to
+ * vfs_test_lock. (Arguably perhaps test_lock should be done with an
+ * inode operation.)
+ */
+static int nfsd_test_lock(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file_lock *lock)
+{
+ struct file *file;
+ int err;
+
+ err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file);
+ if (err)
+ return err;
+ err = vfs_test_lock(file, lock);
+ nfsd_close(file);
+ return err;
+}
+
+/*
* LOCKT operation
*/
__be32
@@ -2788,7 +2824,6 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_lockt *lockt)
{
struct inode *inode;
- struct file file;
struct file_lock file_lock;
int error;
__be32 status;
@@ -2839,23 +2874,12 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
file_lock.fl_lmops = &nfsd_posix_mng_ops;
file_lock.fl_start = lockt->lt_offset;
- if ((lockt->lt_length == ~(u64)0) || LOFF_OVERFLOW(lockt->lt_offset, lockt->lt_length))
- file_lock.fl_end = ~(u64)0;
- else
- file_lock.fl_end = lockt->lt_offset + lockt->lt_length - 1;
+ file_lock.fl_end = last_byte_offset(lockt->lt_offset, lockt->lt_length);
nfs4_transform_lock_offset(&file_lock);
- /* vfs_test_lock uses the struct file _only_ to resolve the inode.
- * since LOCKT doesn't require an OPEN, and therefore a struct
- * file may not exist, pass vfs_test_lock a struct file with
- * only the dentry:inode set.
- */
- memset(&file, 0, sizeof (struct file));
- file.f_path.dentry = cstate->current_fh.fh_dentry;
-
status = nfs_ok;
- error = vfs_test_lock(&file, &file_lock);
+ error = nfsd_test_lock(rqstp, &cstate->current_fh, &file_lock);
if (error) {
status = nfserrno(error);
goto out;
@@ -2906,10 +2930,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
file_lock.fl_lmops = &nfsd_posix_mng_ops;
file_lock.fl_start = locku->lu_offset;
- if ((locku->lu_length == ~(u64)0) || LOFF_OVERFLOW(locku->lu_offset, locku->lu_length))
- file_lock.fl_end = ~(u64)0;
- else
- file_lock.fl_end = locku->lu_offset + locku->lu_length - 1;
+ file_lock.fl_end = last_byte_offset(locku->lu_offset, locku->lu_length);
nfs4_transform_lock_offset(&file_lock);
/*
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index afcdf4b7684..f65953be39c 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1,6 +1,4 @@
/*
- * fs/nfs/nfs4xdr.c
- *
* Server-side XDR for NFSv4
*
* Copyright (c) 2002 The Regents of the University of Michigan.
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 77d7b8c531a..3d93b2064ce 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -84,6 +84,8 @@ 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);
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);
static ssize_t write_threads(struct file *file, char *buf, size_t size);
static ssize_t write_pool_threads(struct file *file, char *buf, size_t size);
static ssize_t write_versions(struct file *file, char *buf, size_t size);
@@ -94,9 +96,6 @@ static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
#endif
-static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size);
-static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size);
-
static ssize_t (*write_op[])(struct file *, char *, size_t) = {
[NFSD_Svc] = write_svc,
[NFSD_Add] = write_add,
@@ -106,8 +105,8 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = {
[NFSD_Getfd] = write_getfd,
[NFSD_Getfs] = write_getfs,
[NFSD_Fh] = write_filehandle,
- [NFSD_FO_UnlockIP] = failover_unlock_ip,
- [NFSD_FO_UnlockFS] = failover_unlock_fs,
+ [NFSD_FO_UnlockIP] = write_unlock_ip,
+ [NFSD_FO_UnlockFS] = write_unlock_fs,
[NFSD_Threads] = write_threads,
[NFSD_Pool_Threads] = write_pool_threads,
[NFSD_Versions] = write_versions,
@@ -176,10 +175,24 @@ static const struct file_operations exports_operations = {
/*----------------------------------------------------------------------------*/
/*
* payload - write methods
- * If the method has a response, the response should be put in buf,
- * and the length returned. Otherwise return 0 or and -error.
*/
+/**
+ * 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;
@@ -189,6 +202,30 @@ static ssize_t write_svc(struct file *file, char *buf, size_t size)
return nfsd_svc(data->svc_port, data->svc_nthreads);
}
+/**
+ * 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;
@@ -198,6 +235,30 @@ static ssize_t write_add(struct file *file, char *buf, size_t size)
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;
@@ -207,6 +268,33 @@ static ssize_t write_del(struct file *file, char *buf, size_t size)
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;
@@ -216,6 +304,31 @@ static ssize_t write_export(struct file *file, char *buf, size_t size)
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;
@@ -226,6 +339,30 @@ static ssize_t write_unexport(struct file *file, char *buf, size_t size)
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;
@@ -265,6 +402,29 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size)
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;
@@ -309,7 +469,23 @@ static ssize_t write_getfd(struct file *file, char *buf, size_t size)
return err;
}
-static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size)
+/**
+ * write_unlock_ip - Release all locks used by a client
+ *
+ * Experimental.
+ *
+ * Input:
+ * buf: '\n'-terminated C string containing a
+ * presentation format IPv4 address
+ * size: length of C string in @buf
+ * Output:
+ * On success: returns zero if all specified locks were released;
+ * returns one if one or more locks were not released
+ * On error: return code is negative errno value
+ *
+ * Note: Only AF_INET client addresses are passed in
+ */
+static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
{
struct sockaddr_in sin = {
.sin_family = AF_INET,
@@ -339,7 +515,21 @@ static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size)
return nlmsvc_unlock_all_by_ip((struct sockaddr *)&sin);
}
-static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
+/**
+ * write_unlock_fs - Release all locks on a local file system
+ *
+ * Experimental.
+ *
+ * Input:
+ * buf: '\n'-terminated C string containing the
+ * absolute pathname of a local file system
+ * size: length of C string in @buf
+ * Output:
+ * On success: returns zero if all specified locks were released;
+ * returns one if one or more locks were not released
+ * On error: return code is negative errno value
+ */
+static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
{
struct path path;
char *fo_path;
@@ -360,21 +550,44 @@ static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
if (error)
return error;
+ /*
+ * XXX: Needs better sanity checking. Otherwise we could end up
+ * releasing locks on the wrong file system.
+ *
+ * For example:
+ * 1. Does the path refer to a directory?
+ * 2. Is that directory a mount point, or
+ * 3. Is that directory the root of an exported file system?
+ */
error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
path_put(&path);
return error;
}
+/**
+ * write_filehandle - Get a variable-length NFS file handle by path
+ *
+ * On input, the buffer contains a '\n'-terminated C string comprised of
+ * three alphanumeric words separated by whitespace. The string may
+ * contain escape sequences.
+ *
+ * Input:
+ * buf:
+ * domain: client domain name
+ * path: export pathname
+ * maxsize: numeric maximum size of
+ * @buf
+ * size: length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing a ASCII hex text version
+ * of the NFS file handle;
+ * return code is the size in bytes of the string
+ * On error: return code is negative errno value
+ */
static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
{
- /* request is:
- * domain path maxsize
- * response is
- * filehandle
- *
- * qword quoting is used, so filehandle will be \x....
- */
char *dname, *path;
int uninitialized_var(maxsize);
char *mesg = buf;
@@ -391,11 +604,13 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
dname = mesg;
len = qword_get(&mesg, dname, size);
- if (len <= 0) return -EINVAL;
+ if (len <= 0)
+ return -EINVAL;
path = dname+len+1;
len = qword_get(&mesg, path, size);
- if (len <= 0) return -EINVAL;
+ if (len <= 0)
+ return -EINVAL;
len = get_int(&mesg, &maxsize);
if (len)
@@ -419,17 +634,43 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
if (len)
return len;
- mesg = buf; len = SIMPLE_TRANSACTION_LIMIT;
+ mesg = buf;
+ len = SIMPLE_TRANSACTION_LIMIT;
qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
mesg[-1] = '\n';
return mesg - buf;
}
+/**
+ * write_threads - Start NFSD, or report the current number of running threads
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string numeric value representing the number of
+ * running NFSD threads;
+ * return code is the size in bytes of the string
+ * On error: return code is zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing the
+ * number of NFSD threads to start
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: NFS service is started;
+ * passed-in buffer filled with '\n'-terminated C
+ * string numeric value representing the number of
+ * running NFSD threads;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_threads(struct file *file, char *buf, size_t size)
{
- /* if size > 0, look for a number of threads and call nfsd_svc
- * then write out number of threads as reply
- */
char *mesg = buf;
int rv;
if (size > 0) {
@@ -437,9 +678,9 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
rv = get_int(&mesg, &newthreads);
if (rv)
return rv;
- if (newthreads <0)
+ if (newthreads < 0)
return -EINVAL;
- rv = nfsd_svc(2049, newthreads);
+ rv = nfsd_svc(NFS_PORT, newthreads);
if (rv)
return rv;
}
@@ -447,6 +688,28 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
return strlen(buf);
}
+/**
+ * write_pool_threads - Set or report the current number of threads per pool
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing whitespace-
+ * separated unsigned integer values
+ * representing the number of NFSD
+ * threads to start in each pool
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing integer values representing the
+ * number of NFSD threads in each pool;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
{
/* if size > 0, look for an array of number of threads per node
@@ -517,10 +780,6 @@ out_free:
static ssize_t __write_versions(struct file *file, char *buf, size_t size)
{
- /*
- * Format:
- * [-/+]vers [-/+]vers ...
- */
char *mesg = buf;
char *vers, sign;
int len, num;
@@ -578,6 +837,38 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
return len;
}
+/**
+ * write_versions - Set or report the available NFS protocol versions
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing positive or negative integer
+ * values representing the current status of each
+ * protocol version;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing whitespace-
+ * separated positive or negative
+ * integer values representing NFS
+ * protocol versions to enable ("+n")
+ * or disable ("-n")
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: status of zero or more protocol versions has
+ * been updated; passed-in buffer filled with
+ * '\n'-terminated C string containing positive
+ * or negative integer values representing the
+ * current status of each protocol version;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_versions(struct file *file, char *buf, size_t size)
{
ssize_t rv;
@@ -687,6 +978,75 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
return -EINVAL;
}
+/**
+ * write_ports - Pass a socket file descriptor or transport name to listen on
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ * Output:
+ * On success: passed-in buffer filled with a '\n'-terminated C
+ * string containing a whitespace-separated list of
+ * named NFSD listeners;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing a bound
+ * but unconnected socket that is to be
+ * used as an NFSD listener
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: NFS service is started;
+ * passed-in buffer filled with a '\n'-terminated C
+ * string containing a unique alphanumeric name of
+ * the listener;
+ * return code is the size in bytes of the string
+ * On error: return code is a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing a "-" followed
+ * by an integer value representing a
+ * previously passed in socket file
+ * descriptor
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: NFS service no longer listens on that socket;
+ * passed-in buffer filled with a '\n'-terminated C
+ * string containing a unique name of the listener;
+ * return code is the size in bytes of the string
+ * On error: return code is a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing a transport
+ * name and an unsigned integer value
+ * representing the port to listen on,
+ * separated by whitespace
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: returns zero; NFS service is started
+ * On error: return code is a negative errno value
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing a "-" followed
+ * by a transport name and an unsigned
+ * integer value representing the port
+ * to listen on, separated by whitespace
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: returns zero; NFS service no longer listens
+ * on that transport
+ * On error: return code is a negative errno value
+ */
static ssize_t write_ports(struct file *file, char *buf, size_t size)
{
ssize_t rv;
@@ -700,6 +1060,27 @@ static ssize_t write_ports(struct file *file, char *buf, size_t size)
int nfsd_max_blksize;
+/**
+ * write_maxblksize - Set or report the current NFS blksize
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing the new
+ * NFS blksize
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C string
+ * containing numeric value of the current NFS blksize
+ * setting;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
@@ -752,6 +1133,27 @@ static ssize_t __write_leasetime(struct file *file, char *buf, size_t size)
return strlen(buf);
}
+/**
+ * write_leasetime - Set or report the current NFSv4 lease time
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing an unsigned
+ * integer value representing the new
+ * NFSv4 lease expiry time
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C
+ * string containing unsigned integer value of the
+ * current lease expiry time;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
{
ssize_t rv;
@@ -788,6 +1190,27 @@ static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
return strlen(buf);
}
+/**
+ * write_recoverydir - Set or report the pathname of the recovery directory
+ *
+ * Input:
+ * buf: ignored
+ * size: zero
+ *
+ * OR
+ *
+ * Input:
+ * buf: C string containing the pathname
+ * of the directory on a local file
+ * system containing permanent NFSv4
+ * recovery data
+ * size: non-zero length of C string in @buf
+ * Output:
+ * On success: passed-in buffer filled with '\n'-terminated C string
+ * containing the current recovery pathname setting;
+ * return code is the size in bytes of the string
+ * On error: return code is zero or a negative errno value
+ */
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
{
ssize_t rv;
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index f0da7d9c3a9..9f1ca17293d 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -258,14 +258,32 @@ out:
return error;
}
-/*
- * Perform sanity checks on the dentry in a client's file handle.
+/**
+ * fh_verify - filehandle lookup and access checking
+ * @rqstp: pointer to current rpc request
+ * @fhp: filehandle to be verified
+ * @type: expected type of object pointed to by filehandle
+ * @access: type of access needed to object
+ *
+ * Look up a dentry from the on-the-wire filehandle, check the client's
+ * access to the export, and set the current task's credentials.
+ *
+ * Regardless of success or failure of fh_verify(), fh_put() should be
+ * called on @fhp when the caller is finished with the filehandle.
*
- * Note that the file handle dentry may need to be freed even after
- * an error return.
+ * fh_verify() may be called multiple times on a given filehandle, for
+ * example, when processing an NFSv4 compound. The first call will look
+ * up a dentry using the on-the-wire filehandle. Subsequent calls will
+ * skip the lookup and just perform the other checks and possibly change
+ * the current task's credentials.
*
- * This is only called at the start of an nfsproc call, so fhp points to
- * a svc_fh which is all 0 except for the over-the-wire file handle.
+ * @type specifies the type of object expected using one of the S_IF*
+ * constants defined in include/linux/stat.h. The caller may use zero
+ * to indicate that it doesn't care, or a negative integer to indicate
+ * that it expects something not of the given type.
+ *
+ * @access is formed from the NFSD_MAY_* constants defined in
+ * include/linux/nfsd/nfsd.h.
*/
__be32
fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
@@ -466,6 +484,8 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
goto retry;
break;
}
+ } else if (exp->ex_flags & NFSEXP_FSID) {
+ fsid_type = FSID_NUM;
} else if (exp->ex_uuid) {
if (fhp->fh_maxsize >= 64) {
if (root_export)
@@ -478,9 +498,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
else
fsid_type = FSID_UUID4_INUM;
}
- } else if (exp->ex_flags & NFSEXP_FSID)
- fsid_type = FSID_NUM;
- else if (!old_valid_dev(ex_dev))
+ } else if (!old_valid_dev(ex_dev))
/* for newer device numbers, we must use a newer fsid format */
fsid_type = FSID_ENCODE_DEV;
else
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 5cffeca7ace..6f7f2635122 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -622,6 +622,7 @@ nfserrno (int errno)
{ nfserr_badname, -ESRCH },
{ nfserr_io, -ETXTBSY },
{ nfserr_notsupp, -EOPNOTSUPP },
+ { nfserr_toosmall, -ETOOSMALL },
};
int i;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 44aa92aba89..6e50aaa56ca 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -744,16 +744,44 @@ nfsd_close(struct file *filp)
fput(filp);
}
+/*
+ * Sync a file
+ * As this calls fsync (not fdatasync) there is no need for a write_inode
+ * after it.
+ */
+static inline int nfsd_dosync(struct file *filp, struct dentry *dp,
+ const struct file_operations *fop)
+{
+ struct inode *inode = dp->d_inode;
+ int (*fsync) (struct file *, struct dentry *, int);
+ int err;
+
+ err = filemap_fdatawrite(inode->i_mapping);
+ if (err == 0 && fop && (fsync = fop->fsync))
+ err = fsync(filp, dp, 0);
+ if (err == 0)
+ err = filemap_fdatawait(inode->i_mapping);
+
+ return err;
+}
+
static int
nfsd_sync(struct file *filp)
{
- return vfs_fsync(filp, filp->f_path.dentry, 0);
+ int err;
+ struct inode *inode = filp->f_path.dentry->d_inode;
+ dprintk("nfsd: sync file %s\n", filp->f_path.dentry->d_name.name);
+ mutex_lock(&inode->i_mutex);
+ err=nfsd_dosync(filp, filp->f_path.dentry, filp->f_op);
+ mutex_unlock(&inode->i_mutex);
+
+ return err;
}
int
-nfsd_sync_dir(struct dentry *dentry)
+nfsd_sync_dir(struct dentry *dp)
{
- return vfs_fsync(NULL, dentry, 0);
+ return nfsd_dosync(NULL, dp, dp->d_inode->i_fop);
}
/*
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 00:49:05 +0000