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Commit d2ac640a authored by Trond Myklebust's avatar Trond Myklebust
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NFSv2/v3/v4: Parenthesize #defines in nfs?xdr.c. Fix an off-by-one error on the value 

     of compound_decode_hdr_maxsz.
NFSv4: fix a printk() typo (spotted by Linda Dunaphant).
NFSv4: Ensure that nfs4_open_reclaim() copies the value of the new stateid back into
     the shared nfsv4 state structure.
NFSv4: Don't leak NFS4ERR_WRONGSEC errors back into nfs_lookup().
RPC,NFS,Lockd: Mark the debugging code as "unlikely" so that gcc moves it out of the
     mainline code paths.
parent 72cffe4f
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Inline Side-by-side
Showing with 227 additions and 210 deletions
fs/nfs/inode.c
View file @ d2ac640a
......@@ -1625,7 +1625,7 @@ static struct super_block *nfs4_get_sb(struct file_system_type *fs_type,
if (data->version != NFS4_MOUNT_VERSION) {
printk("nfs warning: mount version %s than kernel\n",
data->version < NFS_MOUNT_VERSION ? "older" : "newer");
data->version < NFS4_MOUNT_VERSION ? "older" : "newer");
}
p = nfs_copy_user_string(NULL, &data->hostname, 256);
......
fs/nfs/nfs2xdr.c
View file @ d2ac640a
......@@ -36,33 +36,33 @@ extern int nfs_stat_to_errno(int stat);
* Declare the space requirements for NFS arguments and replies as
* number of 32bit-words
*/
#define NFS_fhandle_sz 8
#define NFS_sattr_sz 8
#define NFS_filename_sz 1+(NFS2_MAXNAMLEN>>2)
#define NFS_path_sz 1+(NFS2_MAXPATHLEN>>2)
#define NFS_fattr_sz 17
#define NFS_info_sz 5
#define NFS_entry_sz NFS_filename_sz+3
#define NFS_diropargs_sz NFS_fhandle_sz+NFS_filename_sz
#define NFS_sattrargs_sz NFS_fhandle_sz+NFS_sattr_sz
#define NFS_readlinkargs_sz NFS_fhandle_sz
#define NFS_readargs_sz NFS_fhandle_sz+3
#define NFS_writeargs_sz NFS_fhandle_sz+4
#define NFS_createargs_sz NFS_diropargs_sz+NFS_sattr_sz
#define NFS_renameargs_sz NFS_diropargs_sz+NFS_diropargs_sz
#define NFS_linkargs_sz NFS_fhandle_sz+NFS_diropargs_sz
#define NFS_symlinkargs_sz NFS_diropargs_sz+NFS_path_sz+NFS_sattr_sz
#define NFS_readdirargs_sz NFS_fhandle_sz+2
#define NFS_attrstat_sz 1+NFS_fattr_sz
#define NFS_diropres_sz 1+NFS_fhandle_sz+NFS_fattr_sz
#define NFS_readlinkres_sz 1
#define NFS_readres_sz 1+NFS_fattr_sz+1
#define NFS_writeres_sz NFS_attrstat_sz
#define NFS_stat_sz 1
#define NFS_readdirres_sz 1
#define NFS_statfsres_sz 1+NFS_info_sz
#define NFS_fhandle_sz (8)
#define NFS_sattr_sz (8)
#define NFS_filename_sz (1+(NFS2_MAXNAMLEN>>2))
#define NFS_path_sz (1+(NFS2_MAXPATHLEN>>2))
#define NFS_fattr_sz (17)
#define NFS_info_sz (5)
#define NFS_entry_sz (NFS_filename_sz+3)
#define NFS_diropargs_sz (NFS_fhandle_sz+NFS_filename_sz)
#define NFS_sattrargs_sz (NFS_fhandle_sz+NFS_sattr_sz)
#define NFS_readlinkargs_sz (NFS_fhandle_sz)
#define NFS_readargs_sz (NFS_fhandle_sz+3)
#define NFS_writeargs_sz (NFS_fhandle_sz+4)
#define NFS_createargs_sz (NFS_diropargs_sz+NFS_sattr_sz)
#define NFS_renameargs_sz (NFS_diropargs_sz+NFS_diropargs_sz)
#define NFS_linkargs_sz (NFS_fhandle_sz+NFS_diropargs_sz)
#define NFS_symlinkargs_sz (NFS_diropargs_sz+NFS_path_sz+NFS_sattr_sz)
#define NFS_readdirargs_sz (NFS_fhandle_sz+2)
#define NFS_attrstat_sz (1+NFS_fattr_sz)
#define NFS_diropres_sz (1+NFS_fhandle_sz+NFS_fattr_sz)
#define NFS_readlinkres_sz (1)
#define NFS_readres_sz (1+NFS_fattr_sz+1)
#define NFS_writeres_sz (NFS_attrstat_sz)
#define NFS_stat_sz (1)
#define NFS_readdirres_sz (1)
#define NFS_statfsres_sz (1+NFS_info_sz)
/*
* Common NFS XDR functions as inlines
......
fs/nfs/nfs3xdr.c
View file @ d2ac640a
......@@ -33,51 +33,51 @@ extern int nfs_stat_to_errno(int);
* Declare the space requirements for NFS arguments and replies as
* number of 32bit-words
*/
#define NFS3_fhandle_sz 1+16
#define NFS3_fh_sz NFS3_fhandle_sz /* shorthand */
#define NFS3_sattr_sz 15
#define NFS3_filename_sz 1+(NFS3_MAXNAMLEN>>2)
#define NFS3_path_sz 1+(NFS3_MAXPATHLEN>>2)
#define NFS3_fattr_sz 21
#define NFS3_wcc_attr_sz 6
#define NFS3_pre_op_attr_sz 1+NFS3_wcc_attr_sz
#define NFS3_post_op_attr_sz 1+NFS3_fattr_sz
#define NFS3_wcc_data_sz NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz
#define NFS3_fhandle_sz (1+16)
#define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */
#define NFS3_sattr_sz (15)
#define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2))
#define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2))
#define NFS3_fattr_sz (21)
#define NFS3_wcc_attr_sz (6)
#define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz)
#define NFS3_post_op_attr_sz (1+NFS3_fattr_sz)
#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz)
#define NFS3_fsstat_sz
#define NFS3_fsinfo_sz
#define NFS3_pathconf_sz
#define NFS3_entry_sz NFS3_filename_sz+3
#define NFS3_sattrargs_sz NFS3_fh_sz+NFS3_sattr_sz+3
#define NFS3_diropargs_sz NFS3_fh_sz+NFS3_filename_sz
#define NFS3_accessargs_sz NFS3_fh_sz+1
#define NFS3_readlinkargs_sz NFS3_fh_sz
#define NFS3_readargs_sz NFS3_fh_sz+3
#define NFS3_writeargs_sz NFS3_fh_sz+5
#define NFS3_createargs_sz NFS3_diropargs_sz+NFS3_sattr_sz
#define NFS3_mkdirargs_sz NFS3_diropargs_sz+NFS3_sattr_sz
#define NFS3_symlinkargs_sz NFS3_diropargs_sz+NFS3_path_sz+NFS3_sattr_sz
#define NFS3_mknodargs_sz NFS3_diropargs_sz+2+NFS3_sattr_sz
#define NFS3_renameargs_sz NFS3_diropargs_sz+NFS3_diropargs_sz
#define NFS3_linkargs_sz NFS3_fh_sz+NFS3_diropargs_sz
#define NFS3_readdirargs_sz NFS3_fh_sz+2
#define NFS3_commitargs_sz NFS3_fh_sz+3
#define NFS3_attrstat_sz 1+NFS3_fattr_sz
#define NFS3_wccstat_sz 1+NFS3_wcc_data_sz
#define NFS3_lookupres_sz 1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)
#define NFS3_accessres_sz 1+NFS3_post_op_attr_sz+1
#define NFS3_readlinkres_sz 1+NFS3_post_op_attr_sz
#define NFS3_readres_sz 1+NFS3_post_op_attr_sz+3
#define NFS3_writeres_sz 1+NFS3_wcc_data_sz+4
#define NFS3_createres_sz 1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz
#define NFS3_renameres_sz 1+(2 * NFS3_wcc_data_sz)
#define NFS3_linkres_sz 1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz
#define NFS3_readdirres_sz 1+NFS3_post_op_attr_sz+2
#define NFS3_fsstatres_sz 1+NFS3_post_op_attr_sz+13
#define NFS3_fsinfores_sz 1+NFS3_post_op_attr_sz+12
#define NFS3_pathconfres_sz 1+NFS3_post_op_attr_sz+6
#define NFS3_commitres_sz 1+NFS3_wcc_data_sz+2
#define NFS3_entry_sz (NFS3_filename_sz+3)
#define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3)
#define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz)
#define NFS3_accessargs_sz (NFS3_fh_sz+1)
#define NFS3_readlinkargs_sz (NFS3_fh_sz)
#define NFS3_readargs_sz (NFS3_fh_sz+3)
#define NFS3_writeargs_sz (NFS3_fh_sz+5)
#define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz)
#define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz)
#define NFS3_symlinkargs_sz (NFS3_diropargs_sz+NFS3_path_sz+NFS3_sattr_sz)
#define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz)
#define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz)
#define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz)
#define NFS3_readdirargs_sz (NFS3_fh_sz+2)
#define NFS3_commitargs_sz (NFS3_fh_sz+3)
#define NFS3_attrstat_sz (1+NFS3_fattr_sz)
#define NFS3_wccstat_sz (1+NFS3_wcc_data_sz)
#define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz))
#define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1)
#define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz)
#define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3)
#define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4)
#define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz)
#define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz))
#define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz)
#define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2)
#define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13)
#define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12)
#define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6)
#define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2)
/*
* Map file type to S_IFMT bits
......
fs/nfs/nfs4proc.c
View file @ d2ac640a
......@@ -61,6 +61,17 @@ extern struct rpc_procinfo nfs4_procedures[];
extern nfs4_stateid zero_stateid;
/* Prevent leaks of NFSv4 errors into userland */
static inline int nfs4_map_errors(int err)
{
if (err < -1000) {
printk(KERN_WARNING "%s could not handle NFSv4 error %d\n",
__FUNCTION__, -err);
return -EIO;
}
return err;
}
static void
nfs4_setup_compound(struct nfs4_compound *cp, struct nfs4_op *ops,
struct nfs_server *server, char *tag)
......@@ -506,6 +517,8 @@ nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
status = rpc_call_sync(server->client, &msg, 0);
nfs4_increment_seqid(status, sp);
if (status == 0)
memcpy(&state->stateid, &o_res.stateid, sizeof(state->stateid));
/* Update the inode attributes */
nfs_refresh_inode(inode, &fattr);
return status;
......@@ -690,12 +703,12 @@ nfs4_do_setattr(struct nfs_server *server, struct nfs_fattr *fattr,
retry:
fattr->valid = 0;
if (state)
if (sattr->ia_valid & ATTR_SIZE)
nfs4_copy_stateid(&arg.stateid, state, 0);
else
else
memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
status = rpc_call_sync(server->client, &msg, 0);
status = rpc_call_sync(server->client, &msg, 0);
if (status) {
status = nfs4_handle_error(server, status);
if (!status)
......@@ -872,7 +885,7 @@ nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
}
out:
if (status)
return status;
return nfs4_map_errors(status);
return nfs4_proc_fsinfo(server, fhandle, info);
}
......@@ -887,7 +900,7 @@ nfs4_proc_getattr(struct inode *inode, struct nfs_fattr *fattr)
nfs4_setup_compound(&compound, ops, NFS_SERVER(inode), "getattr");
nfs4_setup_putfh(&compound, NFS_FH(inode));
nfs4_setup_getattr(&compound, fattr);
return nfs4_call_compound(&compound, NULL, 0);
return nfs4_map_errors(nfs4_call_compound(&compound, NULL, 0));
}
/*
......@@ -973,7 +986,7 @@ nfs4_proc_lookup(struct inode *dir, struct qstr *name,
if (status >= 0)
status = nfs_refresh_inode(dir, &dir_attr);
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1020,7 +1033,7 @@ nfs4_proc_access(struct inode *inode, struct rpc_cred *cred, int mode)
else if (req_access != resp_access)
status = -EACCES;
}
return status;
return nfs4_map_errors(status);
}
/*
......@@ -1056,7 +1069,7 @@ nfs4_proc_readlink(struct inode *inode, struct page *page)
nfs4_setup_compound(&compound, ops, NFS_SERVER(inode), "readlink");
nfs4_setup_putfh(&compound, NFS_FH(inode));
nfs4_setup_readlink(&compound, PAGE_CACHE_SIZE, &page);
return nfs4_call_compound(&compound, NULL, 0);
return nfs4_map_errors(nfs4_call_compound(&compound, NULL, 0));
}
static int
......@@ -1095,7 +1108,7 @@ nfs4_proc_read(struct nfs_read_data *rdata, struct file *filp)
if (!status)
renew_lease(server, timestamp);
dprintk("NFS reply read: %d\n", status);
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1131,7 +1144,7 @@ nfs4_proc_write(struct nfs_write_data *wdata, struct file *filp)
fattr->valid = 0;
status = rpc_call_sync(server->client, &msg, rpcflags);
dprintk("NFS reply write: %d\n", status);
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1166,7 +1179,7 @@ nfs4_proc_commit(struct nfs_write_data *cdata, struct file *filp)
fattr->valid = 0;
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply commit: %d\n", status);
return status;
return nfs4_map_errors(status);
}
/*
......@@ -1233,7 +1246,7 @@ nfs4_proc_remove(struct inode *dir, struct qstr *name)
process_cinfo(&dir_cinfo, &dir_attr);
nfs_refresh_inode(dir, &dir_attr);
}
return status;
return nfs4_map_errors(status);
}
struct unlink_desc {
......@@ -1311,7 +1324,7 @@ nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
nfs_refresh_inode(old_dir, &old_dir_attr);
nfs_refresh_inode(new_dir, &new_dir_attr);
}
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1341,7 +1354,7 @@ nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
nfs_refresh_inode(dir, &dir_attr);
nfs_refresh_inode(inode, &fattr);
}
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1372,7 +1385,7 @@ nfs4_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
process_cinfo(&dir_cinfo, &dir_attr);
nfs_refresh_inode(dir, &dir_attr);
}
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1402,7 +1415,7 @@ nfs4_proc_mkdir(struct inode *dir, struct qstr *name, struct iattr *sattr,
process_cinfo(&dir_cinfo, &dir_attr);
nfs_refresh_inode(dir, &dir_attr);
}
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1420,9 +1433,11 @@ nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
nfs4_setup_putfh(&compound, NFS_FH(dir));
nfs4_setup_readdir(&compound, cookie, NFS_COOKIEVERF(dir), &page, count, dentry);
status = nfs4_call_compound(&compound, cred, 0);
if (status == 0)
memcpy(NFS_COOKIEVERF(dir), ops[1].u.readdir.rd_resp_verifier.data, NFS4_VERIFIER_SIZE);
unlock_kernel();
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1452,7 +1467,7 @@ nfs4_proc_mknod(struct inode *dir, struct qstr *name, struct iattr *sattr,
process_cinfo(&dir_cinfo, &dir_attr);
nfs_refresh_inode(dir, &dir_attr);
}
return status;
return nfs4_map_errors(status);
}
static int
......@@ -1465,7 +1480,7 @@ nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
nfs4_setup_compound(&compound, ops, server, "statfs");
nfs4_setup_putfh(&compound, fhandle);
nfs4_setup_statfs(&compound, fsstat);
return nfs4_call_compound(&compound, NULL, 0);
return nfs4_map_errors(nfs4_call_compound(&compound, NULL, 0));
}
static int
......@@ -1478,7 +1493,7 @@ nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
.rpc_resp = fsinfo,
};
return rpc_call_sync(server->client, &msg, 0);
return nfs4_map_errors(rpc_call_sync(server->client, &msg, 0));
}
static int
......@@ -1491,7 +1506,7 @@ nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
nfs4_setup_compound(&compound, ops, server, "statfs");
nfs4_setup_putfh(&compound, fhandle);
nfs4_setup_pathconf(&compound, pathconf);
return nfs4_call_compound(&compound, NULL, 0);
return nfs4_map_errors(nfs4_call_compound(&compound, NULL, 0));
}
static void
......@@ -1829,7 +1844,7 @@ nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server)
{
struct nfs4_client *clp = server->nfs4_state;
if (!clp)
if (!clp || task->tk_status >= 0)
return 0;
switch(task->tk_status) {
case -NFS4ERR_STALE_CLIENTID:
......@@ -1848,6 +1863,7 @@ nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server)
task->tk_status = 0;
return -EAGAIN;
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
}
......@@ -1925,16 +1941,9 @@ nfs4_handle_error(struct nfs_server *server, int errorcode)
break;
case -NFS4ERR_OLD_STATEID:
ret = 0;
break;
default:
if (errorcode <= -1000) {
printk(KERN_WARNING "%s could not handle NFSv4 error %d\n",
__FUNCTION__, -errorcode);
ret = -EIO;
}
}
/* We failed to handle the error */
return ret;
return nfs4_map_errors(ret);
}
......@@ -2109,7 +2118,7 @@ nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
if (lsp)
nfs4_put_lock_state(lsp);
up(&state->lock_sema);
return status;
return nfs4_map_errors(status);
}
int
......@@ -2154,7 +2163,7 @@ nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
nfs4_put_lock_state(lsp);
out:
up(&state->lock_sema);
return status;
return nfs4_map_errors(status);
}
static int
......@@ -2230,7 +2239,7 @@ nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
nfs4_put_lock_state(lsp);
out:
up(&state->lock_sema);
return status;
return nfs4_map_errors(status);
}
static int
......
fs/nfs/nfs4state.c
View file @ d2ac640a
......@@ -790,7 +790,7 @@ reclaimer(void *ptr)
restart_loop:
spin_lock(&clp->cl_lock);
list_for_each_entry(sp, &clp->cl_state_owners, so_list) {
if (sp->so_generation - generation <= 0)
if (sp->so_generation - generation >= 0)
continue;
atomic_inc(&sp->so_count);
spin_unlock(&clp->cl_lock);
......
fs/nfs/nfs4xdr.c
View file @ d2ac640a
This diff is collapsed.
include/linux/lockd/debug.h
View file @ d2ac640a
......@@ -23,7 +23,7 @@
#undef ifdebug
#if defined(RPC_DEBUG) && defined(LOCKD_DEBUG)
# define ifdebug(flag) if (nlm_debug & NLMDBG_##flag)
# define ifdebug(flag) if (unlikely(nlm_debug & NLMDBG_##flag))
#else
# define ifdebug(flag) if (0)
#endif
......
include/linux/nfs_fs.h
View file @ d2ac640a
......@@ -691,7 +691,7 @@ struct nfs4_mount_data;
#ifdef __KERNEL__
# undef ifdebug
# ifdef NFS_DEBUG
# define ifdebug(fac) if (nfs_debug & NFSDBG_##fac)
# define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac))
# else
# define ifdebug(fac) if (0)
# endif
......
include/linux/sunrpc/debug.h
View file @ d2ac640a
......@@ -54,7 +54,7 @@ extern unsigned int nlm_debug;
#undef ifdebug
#ifdef RPC_DEBUG
# define ifdebug(fac) if (rpc_debug & RPCDBG_##fac)
# define ifdebug(fac) if (unlikely(rpc_debug & RPCDBG_##fac))
# define dfprintk(fac, args...) do { ifdebug(fac) printk(args); } while(0)
# define RPC_IFDEBUG(x) x
#else
......
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