Commit 1d663650 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  nfs: Ignore kmemleak false positive in nfs_readdir_make_qstr
  SUNRPC: Simplify rpc_alloc_iostats by removing pointless local variable
  nfs: trivial: remove unused nfs_wait_event macro
  NFS: readdir shouldn't read beyond the reply returned by the server
  NFS: Fix a couple of regressions in readdir.
  Revert "NFSv4: Fall back to ordinary lookup if nfs4_atomic_open() returns EISDIR"
  Regression: fix mounting NFS when NFSv3 support is not compiled
  NLM: Fix a regression in lockd
parents d33fdee4 04e4bd1c
......@@ -124,7 +124,7 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni)
continue;
if (host->h_server != ni->server)
continue;
if (ni->server &&
if (ni->server && ni->src_len != 0 &&
!rpc_cmp_addr(nlm_srcaddr(host), ni->src_sap))
continue;
......@@ -167,6 +167,7 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni)
host->h_addrlen = ni->salen;
rpc_set_port(nlm_addr(host), 0);
memcpy(nlm_srcaddr(host), ni->src_sap, ni->src_len);
host->h_srcaddrlen = ni->src_len;
host->h_version = ni->version;
host->h_proto = ni->protocol;
host->h_rpcclnt = NULL;
......@@ -238,9 +239,6 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap,
const char *hostname,
int noresvport)
{
const struct sockaddr source = {
.sa_family = AF_UNSPEC,
};
struct nlm_lookup_host_info ni = {
.server = 0,
.sap = sap,
......@@ -249,8 +247,6 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap,
.version = version,
.hostname = hostname,
.hostname_len = strlen(hostname),
.src_sap = &source,
.src_len = sizeof(source),
.noresvport = noresvport,
};
......@@ -357,7 +353,6 @@ nlm_bind_host(struct nlm_host *host)
.protocol = host->h_proto,
.address = nlm_addr(host),
.addrsize = host->h_addrlen,
.saddress = nlm_srcaddr(host),
.timeout = &timeparms,
.servername = host->h_name,
.program = &nlm_program,
......@@ -376,6 +371,8 @@ nlm_bind_host(struct nlm_host *host)
args.flags |= RPC_CLNT_CREATE_HARDRTRY;
if (host->h_noresvport)
args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
if (host->h_srcaddrlen)
args.saddress = nlm_srcaddr(host);
clnt = rpc_create(&args);
if (!IS_ERR(clnt))
......
......@@ -34,6 +34,7 @@
#include <linux/mount.h>
#include <linux/sched.h>
#include <linux/vmalloc.h>
#include <linux/kmemleak.h>
#include "delegation.h"
#include "iostat.h"
......@@ -194,9 +195,13 @@ typedef struct {
static
struct nfs_cache_array *nfs_readdir_get_array(struct page *page)
{
void *ptr;
if (page == NULL)
return ERR_PTR(-EIO);
return (struct nfs_cache_array *)kmap(page);
ptr = kmap(page);
if (ptr == NULL)
return ERR_PTR(-ENOMEM);
return ptr;
}
static
......@@ -213,6 +218,9 @@ int nfs_readdir_clear_array(struct page *page, gfp_t mask)
{
struct nfs_cache_array *array = nfs_readdir_get_array(page);
int i;
if (IS_ERR(array))
return PTR_ERR(array);
for (i = 0; i < array->size; i++)
kfree(array->array[i].string.name);
nfs_readdir_release_array(page);
......@@ -231,6 +239,11 @@ int nfs_readdir_make_qstr(struct qstr *string, const char *name, unsigned int le
string->name = kmemdup(name, len, GFP_KERNEL);
if (string->name == NULL)
return -ENOMEM;
/*
* Avoid a kmemleak false positive. The pointer to the name is stored
* in a page cache page which kmemleak does not scan.
*/
kmemleak_not_leak(string->name);
string->hash = full_name_hash(name, len);
return 0;
}
......@@ -244,7 +257,7 @@ int nfs_readdir_add_to_array(struct nfs_entry *entry, struct page *page)
if (IS_ERR(array))
return PTR_ERR(array);
ret = -EIO;
ret = -ENOSPC;
if (array->size >= MAX_READDIR_ARRAY)
goto out;
......@@ -255,9 +268,9 @@ int nfs_readdir_add_to_array(struct nfs_entry *entry, struct page *page)
if (ret)
goto out;
array->last_cookie = entry->cookie;
array->size++;
if (entry->eof == 1)
array->eof_index = array->size;
array->size++;
out:
nfs_readdir_release_array(page);
return ret;
......@@ -272,7 +285,7 @@ int nfs_readdir_search_for_pos(struct nfs_cache_array *array, nfs_readdir_descri
if (diff < 0)
goto out_eof;
if (diff >= array->size) {
if (array->eof_index > 0)
if (array->eof_index >= 0)
goto out_eof;
desc->current_index += array->size;
return -EAGAIN;
......@@ -281,8 +294,6 @@ int nfs_readdir_search_for_pos(struct nfs_cache_array *array, nfs_readdir_descri
index = (unsigned int)diff;
*desc->dir_cookie = array->array[index].cookie;
desc->cache_entry_index = index;
if (index == array->eof_index)
desc->eof = 1;
return 0;
out_eof:
desc->eof = 1;
......@@ -296,17 +307,17 @@ int nfs_readdir_search_for_cookie(struct nfs_cache_array *array, nfs_readdir_des
int status = -EAGAIN;
for (i = 0; i < array->size; i++) {
if (i == array->eof_index) {
desc->eof = 1;
status = -EBADCOOKIE;
}
if (array->array[i].cookie == *desc->dir_cookie) {
desc->cache_entry_index = i;
status = 0;
break;
goto out;
}
}
if (i == array->eof_index) {
desc->eof = 1;
status = -EBADCOOKIE;
}
out:
return status;
}
......@@ -449,7 +460,7 @@ out:
/* Perform conversion from xdr to cache array */
static
void nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *entry,
int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *entry,
void *xdr_page, struct page *page, unsigned int buflen)
{
struct xdr_stream stream;
......@@ -471,21 +482,29 @@ void nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *e
do {
status = xdr_decode(desc, entry, &stream);
if (status != 0)
if (status != 0) {
if (status == -EAGAIN)
status = 0;
break;
}
if (nfs_readdir_add_to_array(entry, page) == -1)
break;
if (desc->plus == 1)
nfs_prime_dcache(desc->file->f_path.dentry, entry);
status = nfs_readdir_add_to_array(entry, page);
if (status != 0)
break;
} while (!entry->eof);
if (status == -EBADCOOKIE && entry->eof) {
array = nfs_readdir_get_array(page);
array->eof_index = array->size - 1;
status = 0;
nfs_readdir_release_array(page);
if (!IS_ERR(array)) {
array->eof_index = array->size;
status = 0;
nfs_readdir_release_array(page);
}
}
return status;
}
static
......@@ -537,7 +556,7 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
struct nfs_entry entry;
struct file *file = desc->file;
struct nfs_cache_array *array;
int status = 0;
int status = -ENOMEM;
unsigned int array_size = ARRAY_SIZE(pages);
entry.prev_cookie = 0;
......@@ -549,6 +568,10 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
goto out;
array = nfs_readdir_get_array(page);
if (IS_ERR(array)) {
status = PTR_ERR(array);
goto out;
}
memset(array, 0, sizeof(struct nfs_cache_array));
array->eof_index = -1;
......@@ -556,12 +579,19 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
if (!pages_ptr)
goto out_release_array;
do {
unsigned int pglen;
status = nfs_readdir_xdr_filler(pages, desc, &entry, file, inode);
if (status < 0)
break;
nfs_readdir_page_filler(desc, &entry, pages_ptr, page, array_size * PAGE_SIZE);
} while (array->eof_index < 0 && array->size < MAX_READDIR_ARRAY);
pglen = status;
status = nfs_readdir_page_filler(desc, &entry, pages_ptr, page, pglen);
if (status < 0) {
if (status == -ENOSPC)
status = 0;
break;
}
} while (array->eof_index < 0);
nfs_readdir_free_large_page(pages_ptr, pages, array_size);
out_release_array:
......@@ -582,8 +612,10 @@ static
int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page* page)
{
struct inode *inode = desc->file->f_path.dentry->d_inode;
int ret;
if (nfs_readdir_xdr_to_array(desc, page, inode) < 0)
ret = nfs_readdir_xdr_to_array(desc, page, inode);
if (ret < 0)
goto error;
SetPageUptodate(page);
......@@ -595,7 +627,7 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page* page)
return 0;
error:
unlock_page(page);
return -EIO;
return ret;
}
static
......@@ -608,12 +640,8 @@ void cache_page_release(nfs_readdir_descriptor_t *desc)
static
struct page *get_cache_page(nfs_readdir_descriptor_t *desc)
{
struct page *page;
page = read_cache_page(desc->file->f_path.dentry->d_inode->i_mapping,
return read_cache_page(desc->file->f_path.dentry->d_inode->i_mapping,
desc->page_index, (filler_t *)nfs_readdir_filler, desc);
if (IS_ERR(page))
desc->eof = 1;
return page;
}
/*
......@@ -639,8 +667,10 @@ int find_cache_page(nfs_readdir_descriptor_t *desc)
static inline
int readdir_search_pagecache(nfs_readdir_descriptor_t *desc)
{
int res = -EAGAIN;
int res;
if (desc->page_index == 0)
desc->current_index = 0;
while (1) {
res = find_cache_page(desc);
if (res != -EAGAIN)
......@@ -670,6 +700,8 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
struct dentry *dentry = NULL;
array = nfs_readdir_get_array(desc->page);
if (IS_ERR(array))
return PTR_ERR(array);
for (i = desc->cache_entry_index; i < array->size; i++) {
d_type = DT_UNKNOWN;
......@@ -685,11 +717,9 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
*desc->dir_cookie = array->array[i+1].cookie;
else
*desc->dir_cookie = array->last_cookie;
if (i == array->eof_index) {
desc->eof = 1;
break;
}
}
if (i == array->eof_index)
desc->eof = 1;
nfs_readdir_release_array(desc->page);
cache_page_release(desc);
......@@ -1345,12 +1375,12 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
res = NULL;
goto out;
/* This turned out not to be a regular file */
case -EISDIR:
case -ENOTDIR:
goto no_open;
case -ELOOP:
if (!(nd->intent.open.flags & O_NOFOLLOW))
goto no_open;
/* case -EISDIR: */
/* case -EINVAL: */
default:
res = ERR_CAST(inode);
......
......@@ -423,7 +423,7 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
struct page **page;
size_t hdrlen;
unsigned int pglen, recvd;
int status, nr = 0;
int status;
if ((status = ntohl(*p++)))
return nfs_stat_to_errno(status);
......@@ -443,7 +443,7 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
if (pglen > recvd)
pglen = recvd;
page = rcvbuf->pages;
return nr;
return pglen;
}
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
......
......@@ -555,7 +555,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
struct page **page;
size_t hdrlen;
u32 recvd, pglen;
int status, nr = 0;
int status;
status = ntohl(*p++);
/* Decode post_op_attrs */
......@@ -586,7 +586,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
pglen = recvd;
page = rcvbuf->pages;
return nr;
return pglen;
}
__be32 *
......
......@@ -2852,8 +2852,10 @@ static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
res.pgbase = args.pgbase;
status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0);
if (status == 0)
if (status >= 0) {
memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
status += args.pgbase;
}
nfs_invalidate_atime(dir);
......
......@@ -4518,7 +4518,7 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
xdr_read_pages(xdr, pglen);
return 0;
return pglen;
}
static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
......
......@@ -67,6 +67,12 @@
#define NFSDBG_FACILITY NFSDBG_VFS
#ifdef CONFIG_NFS_V3
#define NFS_DEFAULT_VERSION 3
#else
#define NFS_DEFAULT_VERSION 2
#endif
enum {
/* Mount options that take no arguments */
Opt_soft, Opt_hard,
......@@ -2277,7 +2283,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
};
int error = -ENOMEM;
data = nfs_alloc_parsed_mount_data(3);
data = nfs_alloc_parsed_mount_data(NFS_DEFAULT_VERSION);
mntfh = nfs_alloc_fhandle();
if (data == NULL || mntfh == NULL)
goto out_free_fh;
......
......@@ -43,6 +43,7 @@ struct nlm_host {
struct sockaddr_storage h_addr; /* peer address */
size_t h_addrlen;
struct sockaddr_storage h_srcaddr; /* our address (optional) */
size_t h_srcaddrlen;
struct rpc_clnt *h_rpcclnt; /* RPC client to talk to peer */
char *h_name; /* remote hostname */
u32 h_version; /* interface version */
......
......@@ -593,12 +593,6 @@ nfs_fileid_to_ino_t(u64 fileid)
return ino;
}
#define nfs_wait_event(clnt, wq, condition) \
({ \
int __retval = wait_event_killable(wq, condition); \
__retval; \
})
#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
#endif /* __KERNEL__ */
......
......@@ -115,9 +115,7 @@ EXPORT_SYMBOL_GPL(svc_seq_show);
*/
struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
{
struct rpc_iostats *new;
new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
return new;
return kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
}
EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
......
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