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NFS client bugfixes for Linux 3.14

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Highlights:
 
 - Fix NFSv3 acl regressions
 - Fix NFSv4 memory corruption due to slot table abuse in nfs4_proc_open_confirm
 - nfs4_destroy_session must call rpc_destroy_waitqueue
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Merge tag 'nfs-for-3.14-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights:

   - Fix NFSv3 acl regressions
   - Fix NFSv4 memory corruption due to slot table abuse in
     nfs4_proc_open_confirm
   - nfs4_destroy_session must call rpc_destroy_waitqueue"

* tag 'nfs-for-3.14-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  fs: get_acl() must be allowed to return EOPNOTSUPP
  NFSv3: Fix return value of nfs3_proc_setacls
  NFSv3: Remove unused function nfs3_proc_set_default_acl
  NFSv4.1: nfs4_destroy_session must call rpc_destroy_waitqueue
  NFSv4: Fix memory corruption in nfs4_proc_open_confirm
  nfs: fix setting of ACLs on file creation.
This commit is contained in:
Linus Torvalds 2014-02-04 12:26:16 -08:00
commit d7512f79fd
7 changed files with 52 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
fs/nfs/nfs3acl.c
View File

@ -80,7 +80,7 @@ struct posix_acl *nfs3_get_acl(struct inode *inode, int type)
}
if (res.acl_access != NULL) {
if (posix_acl_equiv_mode(res.acl_access, NULL) ||
if ((posix_acl_equiv_mode(res.acl_access, NULL) == 0) ||
res.acl_access->a_count == 0) {
posix_acl_release(res.acl_access);
res.acl_access = NULL;
@ -113,7 +113,7 @@ getout:
return ERR_PTR(status);
}
int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
struct posix_acl *dfacl)
{
struct nfs_server *server = NFS_SERVER(inode);
@ -198,6 +198,15 @@ out:
return status;
}
int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
struct posix_acl *dfacl)
{
int ret;
ret = __nfs3_proc_setacls(inode, acl, dfacl);
return (ret == -EOPNOTSUPP) ? 0 : ret;
}
int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{
struct posix_acl *alloc = NULL, *dfacl = NULL;
@ -225,7 +234,7 @@ int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type)
if (IS_ERR(alloc))
goto fail;
}
status = nfs3_proc_setacls(inode, acl, dfacl);
status = __nfs3_proc_setacls(inode, acl, dfacl);
posix_acl_release(alloc);
return status;
@ -233,25 +242,6 @@ fail:
return PTR_ERR(alloc);
}
int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode,
umode_t mode)
{
struct posix_acl *default_acl, *acl;
int error;
error = posix_acl_create(dir, &mode, &default_acl, &acl);
if (error)
return (error == -EOPNOTSUPP) ? 0 : error;
error = nfs3_proc_setacls(inode, acl, default_acl);
if (acl)
posix_acl_release(acl);
if (default_acl)
posix_acl_release(default_acl);
return error;
}
const struct xattr_handler *nfs3_xattr_handlers[] = {
&posix_acl_access_xattr_handler,
&posix_acl_default_xattr_handler,

2
fs/nfs/nfs4client.c
View File

@ -170,7 +170,7 @@ void nfs41_shutdown_client(struct nfs_client *clp)
void nfs40_shutdown_client(struct nfs_client *clp)
{
if (clp->cl_slot_tbl) {
nfs4_release_slot_table(clp->cl_slot_tbl);
nfs4_shutdown_slot_table(clp->cl_slot_tbl);
kfree(clp->cl_slot_tbl);
}
}

8
fs/nfs/nfs4proc.c
View File

@ -1620,15 +1620,15 @@ static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
nfs40_setup_sequence(data->o_arg.server, &data->o_arg.seq_args,
&data->o_res.seq_res, task);
nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args,
&data->c_res.seq_res, task);
}
static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
nfs40_sequence_done(task, &data->o_res.seq_res);
nfs40_sequence_done(task, &data->c_res.seq_res);
data->rpc_status = task->tk_status;
if (data->rpc_status == 0) {
@ -1686,7 +1686,7 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
};
int status;
nfs4_init_sequence(&data->o_arg.seq_args, &data->o_res.seq_res, 1);
nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1);
kref_get(&data->kref);
data->rpc_done = 0;
data->rpc_status = 0;

25
fs/nfs/nfs4session.c
View File

@ -231,14 +231,23 @@ out:
return ret;
}
/*
* nfs4_release_slot_table - release all slot table entries
*/
static void nfs4_release_slot_table(struct nfs4_slot_table *tbl)
{
nfs4_shrink_slot_table(tbl, 0);
}
/**
* nfs4_release_slot_table - release resources attached to a slot table
* nfs4_shutdown_slot_table - release resources attached to a slot table
* @tbl: slot table to shut down
*
*/
void nfs4_release_slot_table(struct nfs4_slot_table *tbl)
void nfs4_shutdown_slot_table(struct nfs4_slot_table *tbl)
{
nfs4_shrink_slot_table(tbl, 0);
nfs4_release_slot_table(tbl);
rpc_destroy_wait_queue(&tbl->slot_tbl_waitq);
}
/**
@ -422,7 +431,7 @@ void nfs41_update_target_slotid(struct nfs4_slot_table *tbl,
spin_unlock(&tbl->slot_tbl_lock);
}
static void nfs4_destroy_session_slot_tables(struct nfs4_session *session)
static void nfs4_release_session_slot_tables(struct nfs4_session *session)
{
nfs4_release_slot_table(&session->fc_slot_table);
nfs4_release_slot_table(&session->bc_slot_table);
@ -450,7 +459,7 @@ int nfs4_setup_session_slot_tables(struct nfs4_session *ses)
if (status && tbl->slots == NULL)
/* Fore and back channel share a connection so get
* both slot tables or neither */
nfs4_destroy_session_slot_tables(ses);
nfs4_release_session_slot_tables(ses);
return status;
}
@ -470,6 +479,12 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
return session;
}
static void nfs4_destroy_session_slot_tables(struct nfs4_session *session)
{
nfs4_shutdown_slot_table(&session->fc_slot_table);
nfs4_shutdown_slot_table(&session->bc_slot_table);
}
void nfs4_destroy_session(struct nfs4_session *session)
{
struct rpc_xprt *xprt;

2
fs/nfs/nfs4session.h
View File

@ -74,7 +74,7 @@ enum nfs4_session_state {
extern int nfs4_setup_slot_table(struct nfs4_slot_table *tbl,
unsigned int max_reqs, const char *queue);
extern void nfs4_release_slot_table(struct nfs4_slot_table *tbl);
extern void nfs4_shutdown_slot_table(struct nfs4_slot_table *tbl);
extern struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl);
extern void nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot);
extern void nfs4_slot_tbl_drain_complete(struct nfs4_slot_table *tbl);

18
fs/posix_acl.c
View File

@ -521,8 +521,11 @@ posix_acl_chmod(struct inode *inode, umode_t mode)
return -EOPNOTSUPP;
acl = get_acl(inode, ACL_TYPE_ACCESS);
if (IS_ERR_OR_NULL(acl))
if (IS_ERR_OR_NULL(acl)) {
if (acl == ERR_PTR(-EOPNOTSUPP))
return 0;
return PTR_ERR(acl);
}
ret = __posix_acl_chmod(&acl, GFP_KERNEL, mode);
if (ret)
@ -544,14 +547,15 @@ posix_acl_create(struct inode *dir, umode_t *mode,
goto no_acl;
p = get_acl(dir, ACL_TYPE_DEFAULT);
if (IS_ERR(p))
if (IS_ERR(p)) {
if (p == ERR_PTR(-EOPNOTSUPP))
goto apply_umask;
return PTR_ERR(p);
if (!p) {
*mode &= ~current_umask();
goto no_acl;
}
if (!p)
goto apply_umask;
*acl = posix_acl_clone(p, GFP_NOFS);
if (!*acl)
return -ENOMEM;
@ -575,6 +579,8 @@ posix_acl_create(struct inode *dir, umode_t *mode,
}
return 0;
apply_umask:
*mode &= ~current_umask();
no_acl:
*default_acl = NULL;
*acl = NULL;

2
include/linux/nfs_xdr.h
View File

@ -379,12 +379,14 @@ struct nfs_openres {
* Arguments to the open_confirm call.
*/
struct nfs_open_confirmargs {
struct nfs4_sequence_args seq_args;
const struct nfs_fh * fh;
nfs4_stateid * stateid;
struct nfs_seqid * seqid;
};
struct nfs_open_confirmres {
struct nfs4_sequence_res seq_res;
nfs4_stateid stateid;
struct nfs_seqid * seqid;
};