diff options
Diffstat (limited to 'fs/nfs/nfs4proc.c')
-rw-r--r-- | fs/nfs/nfs4proc.c | 303 |
1 files changed, 218 insertions, 85 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index c157b20..6843e0a 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -43,7 +43,6 @@ #include <linux/printk.h> #include <linux/slab.h> #include <linux/sunrpc/clnt.h> -#include <linux/sunrpc/gss_api.h> #include <linux/nfs.h> #include <linux/nfs4.h> #include <linux/nfs_fs.h> @@ -259,7 +258,12 @@ static int nfs4_wait_clnt_recover(struct nfs_client *clp) res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, nfs_wait_bit_killable, TASK_KILLABLE); - return res; + if (res) + return res; + + if (clp->cl_cons_state < 0) + return clp->cl_cons_state; + return 0; } static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) @@ -294,8 +298,8 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc case 0: return 0; case -NFS4ERR_OPENMODE: - if (inode && nfs_have_delegation(inode, FMODE_READ)) { - nfs_inode_return_delegation(inode); + if (inode && nfs4_have_delegation(inode, FMODE_READ)) { + nfs4_inode_return_delegation(inode); exception->retry = 1; return 0; } @@ -1065,7 +1069,7 @@ static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmo return; } rcu_read_unlock(); - nfs_inode_return_delegation(inode); + nfs4_inode_return_delegation(inode); } static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) @@ -1756,33 +1760,70 @@ static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *sta } #if defined(CONFIG_NFS_V4_1) -static int nfs41_check_expired_stateid(struct nfs4_state *state, nfs4_stateid *stateid, unsigned int flags) +static void nfs41_clear_delegation_stateid(struct nfs4_state *state) { - int status = NFS_OK; struct nfs_server *server = NFS_SERVER(state->inode); + nfs4_stateid *stateid = &state->stateid; + int status; + + /* If a state reset has been done, test_stateid is unneeded */ + if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) + return; - if (state->flags & flags) { - status = nfs41_test_stateid(server, stateid); - if (status != NFS_OK) { + status = nfs41_test_stateid(server, stateid); + if (status != NFS_OK) { + /* Free the stateid unless the server explicitly + * informs us the stateid is unrecognized. */ + if (status != -NFS4ERR_BAD_STATEID) nfs41_free_stateid(server, stateid); - state->flags &= ~flags; - } + + clear_bit(NFS_DELEGATED_STATE, &state->flags); + } +} + +/** + * nfs41_check_open_stateid - possibly free an open stateid + * + * @state: NFSv4 state for an inode + * + * Returns NFS_OK if recovery for this stateid is now finished. + * Otherwise a negative NFS4ERR value is returned. + */ +static int nfs41_check_open_stateid(struct nfs4_state *state) +{ + struct nfs_server *server = NFS_SERVER(state->inode); + nfs4_stateid *stateid = &state->stateid; + int status; + + /* If a state reset has been done, test_stateid is unneeded */ + if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && + (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && + (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) + return -NFS4ERR_BAD_STATEID; + + status = nfs41_test_stateid(server, stateid); + if (status != NFS_OK) { + /* Free the stateid unless the server explicitly + * informs us the stateid is unrecognized. */ + if (status != -NFS4ERR_BAD_STATEID) + nfs41_free_stateid(server, stateid); + + clear_bit(NFS_O_RDONLY_STATE, &state->flags); + clear_bit(NFS_O_WRONLY_STATE, &state->flags); + clear_bit(NFS_O_RDWR_STATE, &state->flags); } return status; } static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) { - int deleg_status, open_status; - int deleg_flags = 1 << NFS_DELEGATED_STATE; - int open_flags = (1 << NFS_O_RDONLY_STATE) | (1 << NFS_O_WRONLY_STATE) | (1 << NFS_O_RDWR_STATE); - - deleg_status = nfs41_check_expired_stateid(state, &state->stateid, deleg_flags); - open_status = nfs41_check_expired_stateid(state, &state->open_stateid, open_flags); + int status; - if ((deleg_status == NFS_OK) && (open_status == NFS_OK)) - return NFS_OK; - return nfs4_open_expired(sp, state); + nfs41_clear_delegation_stateid(state); + status = nfs41_check_open_stateid(state); + if (status != NFS_OK) + status = nfs4_open_expired(sp, state); + return status; } #endif @@ -2375,11 +2416,15 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, int i, len, status = 0; rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; - len = gss_mech_list_pseudoflavors(&flav_array[0]); - flav_array[len] = RPC_AUTH_NULL; - len += 1; + len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); + BUG_ON(len < 0); for (i = 0; i < len; i++) { + /* AUTH_UNIX is the default flavor if none was specified, + * thus has already been tried. */ + if (flav_array[i] == RPC_AUTH_UNIX) + continue; + status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); if (status == -NFS4ERR_WRONGSEC || status == -EACCES) continue; @@ -2766,9 +2811,7 @@ static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) * * In the case of WRITE, we also want to put the GETATTR after * the operation -- in this case because we want to make sure - * we get the post-operation mtime and size. This means that - * we can't use xdr_encode_pages() as written: we need a variant - * of it which would leave room in the 'tail' iovec. + * we get the post-operation mtime and size. * * Both of these changes to the XDR layer would in fact be quite * minor, but I decided to leave them for a subsequent patch. @@ -2821,7 +2864,9 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, return PTR_ERR(ctx); sattr->ia_mode &= ~current_umask(); - state = nfs4_do_open(dir, dentry, ctx->mode, flags, sattr, ctx->cred, NULL); + state = nfs4_do_open(dir, dentry, ctx->mode, + flags, sattr, ctx->cred, + &ctx->mdsthreshold); d_drop(dentry); if (IS_ERR(state)) { status = PTR_ERR(state); @@ -3315,8 +3360,14 @@ static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, str static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) { + int error; + nfs_fattr_init(fsinfo->fattr); - return nfs4_do_fsinfo(server, fhandle, fsinfo); + error = nfs4_do_fsinfo(server, fhandle, fsinfo); + if (error == 0) + set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); + + return error; } static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, @@ -3443,7 +3494,7 @@ bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) /* Otherwise, request attributes if and only if we don't hold * a delegation */ - return nfs_have_delegation(hdr->inode, FMODE_READ) == 0; + return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; } static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) @@ -3732,7 +3783,8 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu .rpc_argp = &args, .rpc_resp = &res, }; - int ret = -ENOMEM, npages, i, acl_len = 0; + int ret = -ENOMEM, npages, i; + size_t acl_len = 0; npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT; /* As long as we're doing a round trip to the server anyway, @@ -3847,7 +3899,7 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); if (i < 0) return i; - nfs_inode_return_delegation(inode); + nfs4_inode_return_delegation(inode); ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); /* @@ -3961,6 +4013,16 @@ static void nfs4_init_boot_verifier(const struct nfs_client *clp, memcpy(bootverf->data, verf, sizeof(bootverf->data)); } +/** + * nfs4_proc_setclientid - Negotiate client ID + * @clp: state data structure + * @program: RPC program for NFSv4 callback service + * @port: IP port number for NFS4 callback service + * @cred: RPC credential to use for this call + * @res: where to place the result + * + * Returns zero, a negative errno, or a negative NFS4ERR status code. + */ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred, struct nfs4_setclientid_res *res) @@ -3977,44 +4039,44 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, .rpc_resp = res, .rpc_cred = cred, }; - int loop = 0; int status; + /* nfs_client_id4 */ nfs4_init_boot_verifier(clp, &sc_verifier); - - for(;;) { - rcu_read_lock(); - setclientid.sc_name_len = scnprintf(setclientid.sc_name, - sizeof(setclientid.sc_name), "%s/%s %s %s %u", - clp->cl_ipaddr, - rpc_peeraddr2str(clp->cl_rpcclient, - RPC_DISPLAY_ADDR), - rpc_peeraddr2str(clp->cl_rpcclient, - RPC_DISPLAY_PROTO), - clp->cl_rpcclient->cl_auth->au_ops->au_name, - clp->cl_id_uniquifier); - setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, + rcu_read_lock(); + setclientid.sc_name_len = scnprintf(setclientid.sc_name, + sizeof(setclientid.sc_name), "%s/%s %s", + clp->cl_ipaddr, + rpc_peeraddr2str(clp->cl_rpcclient, + RPC_DISPLAY_ADDR), + rpc_peeraddr2str(clp->cl_rpcclient, + RPC_DISPLAY_PROTO)); + /* cb_client4 */ + setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, sizeof(setclientid.sc_netid), rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_NETID)); - setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, + rcu_read_unlock(); + setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, sizeof(setclientid.sc_uaddr), "%s.%u.%u", clp->cl_ipaddr, port >> 8, port & 255); - rcu_read_unlock(); - status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); - if (status != -NFS4ERR_CLID_INUSE) - break; - if (loop != 0) { - ++clp->cl_id_uniquifier; - break; - } - ++loop; - ssleep(clp->cl_lease_time / HZ + 1); - } + dprintk("NFS call setclientid auth=%s, '%.*s'\n", + clp->cl_rpcclient->cl_auth->au_ops->au_name, + setclientid.sc_name_len, setclientid.sc_name); + status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + dprintk("NFS reply setclientid: %d\n", status); return status; } +/** + * nfs4_proc_setclientid_confirm - Confirm client ID + * @clp: state data structure + * @res: result of a previous SETCLIENTID + * @cred: RPC credential to use for this call + * + * Returns zero, a negative errno, or a negative NFS4ERR status code. + */ int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct nfs4_setclientid_res *arg, struct rpc_cred *cred) @@ -4029,6 +4091,9 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp, unsigned long now; int status; + dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", + clp->cl_rpcclient->cl_auth->au_ops->au_name, + clp->cl_clientid); now = jiffies; status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); if (status == 0) { @@ -4037,6 +4102,7 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp, clp->cl_last_renewal = now; spin_unlock(&clp->cl_lock); } + dprintk("NFS reply setclientid_confirm: %d\n", status); return status; } @@ -4681,9 +4747,17 @@ out: } #if defined(CONFIG_NFS_V4_1) +/** + * nfs41_check_expired_locks - possibly free a lock stateid + * + * @state: NFSv4 state for an inode + * + * Returns NFS_OK if recovery for this stateid is now finished. + * Otherwise a negative NFS4ERR value is returned. + */ static int nfs41_check_expired_locks(struct nfs4_state *state) { - int status, ret = NFS_OK; + int status, ret = -NFS4ERR_BAD_STATEID; struct nfs4_lock_state *lsp; struct nfs_server *server = NFS_SERVER(state->inode); @@ -4691,7 +4765,11 @@ static int nfs41_check_expired_locks(struct nfs4_state *state) if (lsp->ls_flags & NFS_LOCK_INITIALIZED) { status = nfs41_test_stateid(server, &lsp->ls_stateid); if (status != NFS_OK) { - nfs41_free_stateid(server, &lsp->ls_stateid); + /* Free the stateid unless the server + * informs us the stateid is unrecognized. */ + if (status != -NFS4ERR_BAD_STATEID) + nfs41_free_stateid(server, + &lsp->ls_stateid); lsp->ls_flags &= ~NFS_LOCK_INITIALIZED; ret = status; } @@ -4707,9 +4785,9 @@ static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *reques if (test_bit(LK_STATE_IN_USE, &state->flags)) status = nfs41_check_expired_locks(state); - if (status == NFS_OK) - return status; - return nfs4_lock_expired(state, request); + if (status != NFS_OK) + status = nfs4_lock_expired(state, request); + return status; } #endif @@ -4807,7 +4885,7 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) * Don't rely on the VFS having checked the file open mode, * since it won't do this for flock() locks. */ - switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { + switch (request->fl_type) { case F_RDLCK: if (!(filp->f_mode & FMODE_READ)) return -EBADF; @@ -5168,6 +5246,8 @@ out: /* * nfs4_proc_exchange_id() * + * Returns zero, a negative errno, or a negative NFS4ERR status code. + * * Since the clientid has expired, all compounds using sessions * associated with the stale clientid will be returning * NFS4ERR_BADSESSION in the sequence operation, and will therefore @@ -5192,16 +5272,14 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) .rpc_cred = cred, }; - dprintk("--> %s\n", __func__); - BUG_ON(clp == NULL); - nfs4_init_boot_verifier(clp, &verifier); - args.id_len = scnprintf(args.id, sizeof(args.id), - "%s/%s/%u", + "%s/%s", clp->cl_ipaddr, - clp->cl_rpcclient->cl_nodename, - clp->cl_rpcclient->cl_auth->au_flavor); + clp->cl_rpcclient->cl_nodename); + dprintk("NFS call exchange_id auth=%s, '%.*s'\n", + clp->cl_rpcclient->cl_auth->au_ops->au_name, + args.id_len, args.id); res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), GFP_NOFS); @@ -5264,12 +5342,12 @@ out_server_scope: kfree(res.server_scope); out: if (clp->cl_implid != NULL) - dprintk("%s: Server Implementation ID: " + dprintk("NFS reply exchange_id: Server Implementation ID: " "domain: %s, name: %s, date: %llu,%u\n", - __func__, clp->cl_implid->domain, clp->cl_implid->name, + clp->cl_implid->domain, clp->cl_implid->name, clp->cl_implid->date.seconds, clp->cl_implid->date.nseconds); - dprintk("<-- %s status= %d\n", __func__, status); + dprintk("NFS reply exchange_id: %d\n", status); return status; } @@ -6570,22 +6648,36 @@ static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) .rpc_resp = &res, }; + dprintk("NFS call test_stateid %p\n", stateid); nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); - - if (status == NFS_OK) - return res.status; - return status; + if (status != NFS_OK) { + dprintk("NFS reply test_stateid: failed, %d\n", status); + return status; + } + dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); + return -res.status; } +/** + * nfs41_test_stateid - perform a TEST_STATEID operation + * + * @server: server / transport on which to perform the operation + * @stateid: state ID to test + * + * Returns NFS_OK if the server recognizes that "stateid" is valid. + * Otherwise a negative NFS4ERR value is returned if the operation + * failed or the state ID is not currently valid. + */ static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) { struct nfs4_exception exception = { }; int err; do { - err = nfs4_handle_exception(server, - _nfs41_test_stateid(server, stateid), - &exception); + err = _nfs41_test_stateid(server, stateid); + if (err != -NFS4ERR_DELAY) + break; + nfs4_handle_exception(server, err, &exception); } while (exception.retry); return err; } @@ -6601,19 +6693,34 @@ static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) .rpc_argp = &args, .rpc_resp = &res, }; + int status; + dprintk("NFS call free_stateid %p\n", stateid); nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); - return nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); + status = nfs4_call_sync_sequence(server->client, server, &msg, + &args.seq_args, &res.seq_res, 1); + dprintk("NFS reply free_stateid: %d\n", status); + return status; } +/** + * nfs41_free_stateid - perform a FREE_STATEID operation + * + * @server: server / transport on which to perform the operation + * @stateid: state ID to release + * + * Returns NFS_OK if the server freed "stateid". Otherwise a + * negative NFS4ERR value is returned. + */ static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) { struct nfs4_exception exception = { }; int err; do { - err = nfs4_handle_exception(server, - _nfs4_free_stateid(server, stateid), - &exception); + err = _nfs4_free_stateid(server, stateid); + if (err != -NFS4ERR_DELAY) + break; + nfs4_handle_exception(server, err, &exception); } while (exception.retry); return err; } @@ -6725,6 +6832,26 @@ const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { #endif }; +const struct inode_operations nfs4_dir_inode_operations = { + .create = nfs_create, + .lookup = nfs_lookup, + .atomic_open = nfs_atomic_open, + .link = nfs_link, + .unlink = nfs_unlink, + .symlink = nfs_symlink, + .mkdir = nfs_mkdir, + .rmdir = nfs_rmdir, + .mknod = nfs_mknod, + .rename = nfs_rename, + .permission = nfs_permission, + .getattr = nfs_getattr, + .setattr = nfs_setattr, + .getxattr = generic_getxattr, + .setxattr = generic_setxattr, + .listxattr = generic_listxattr, + .removexattr = generic_removexattr, +}; + static const struct inode_operations nfs4_file_inode_operations = { .permission = nfs_permission, .getattr = nfs_getattr, @@ -6769,9 +6896,11 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .set_capabilities = nfs4_server_capabilities, .decode_dirent = nfs4_decode_dirent, .read_setup = nfs4_proc_read_setup, + .read_pageio_init = pnfs_pageio_init_read, .read_rpc_prepare = nfs4_proc_read_rpc_prepare, .read_done = nfs4_read_done, .write_setup = nfs4_proc_write_setup, + .write_pageio_init = pnfs_pageio_init_write, .write_rpc_prepare = nfs4_proc_write_rpc_prepare, .write_done = nfs4_write_done, .commit_setup = nfs4_proc_commit_setup, @@ -6781,7 +6910,11 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .clear_acl_cache = nfs4_zap_acl_attr, .close_context = nfs4_close_context, .open_context = nfs4_atomic_open, + .have_delegation = nfs4_have_delegation, + .return_delegation = nfs4_inode_return_delegation, + .alloc_client = nfs4_alloc_client, .init_client = nfs4_init_client, + .free_client = nfs4_free_client, }; static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |