Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * linux/fs/nfs/proc.c |
| 4 | * |
| 5 | * Copyright (C) 1992, 1993, 1994 Rick Sladkey |
| 6 | * |
| 7 | * OS-independent nfs remote procedure call functions |
| 8 | * |
| 9 | * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers |
| 10 | * so at last we can have decent(ish) throughput off a |
| 11 | * Sun server. |
| 12 | * |
| 13 | * Coding optimized and cleaned up by Florian La Roche. |
| 14 | * Note: Error returns are optimized for NFS_OK, which isn't translated via |
| 15 | * nfs_stat_to_errno(), but happens to be already the right return code. |
| 16 | * |
| 17 | * Also, the code currently doesn't check the size of the packet, when |
| 18 | * it decodes the packet. |
| 19 | * |
| 20 | * Feel free to fix it and mail me the diffs if it worries you. |
| 21 | * |
| 22 | * Completely rewritten to support the new RPC call interface; |
| 23 | * rewrote and moved the entire XDR stuff to xdr.c |
| 24 | * --Olaf Kirch June 1996 |
| 25 | * |
| 26 | * The code below initializes all auto variables explicitly, otherwise |
| 27 | * it will fail to work as a module (gcc generates a memset call for an |
| 28 | * incomplete struct). |
| 29 | */ |
| 30 | |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/param.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/time.h> |
| 34 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/errno.h> |
| 36 | #include <linux/string.h> |
| 37 | #include <linux/in.h> |
| 38 | #include <linux/pagemap.h> |
| 39 | #include <linux/sunrpc/clnt.h> |
| 40 | #include <linux/nfs.h> |
| 41 | #include <linux/nfs2.h> |
| 42 | #include <linux/nfs_fs.h> |
| 43 | #include <linux/nfs_page.h> |
| 44 | #include <linux/lockd/bind.h> |
Jeff Layton | d310310 | 2011-12-01 22:44:39 +0100 | [diff] [blame] | 45 | #include <linux/freezer.h> |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 46 | #include "internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | #define NFSDBG_FACILITY NFSDBG_PROC |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | /* |
| 51 | * Bare-bones access to getattr: this is for nfs_read_super. |
| 52 | */ |
| 53 | static int |
| 54 | nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
| 55 | struct nfs_fsinfo *info) |
| 56 | { |
| 57 | struct nfs_fattr *fattr = info->fattr; |
| 58 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 59 | struct rpc_message msg = { |
| 60 | .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], |
| 61 | .rpc_argp = fhandle, |
| 62 | .rpc_resp = fattr, |
| 63 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | int status; |
| 65 | |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 66 | dprintk("%s: call getattr\n", __func__); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 67 | nfs_fattr_init(fattr); |
EG Keizer | 37ca8f5 | 2008-08-19 16:34:36 -0400 | [diff] [blame] | 68 | status = rpc_call_sync(server->client, &msg, 0); |
| 69 | /* Retry with default authentication if different */ |
| 70 | if (status && server->nfs_client->cl_rpcclient != server->client) |
| 71 | status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 72 | dprintk("%s: reply getattr: %d\n", __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | if (status) |
| 74 | return status; |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 75 | dprintk("%s: call statfs\n", __func__); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 76 | msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS]; |
| 77 | msg.rpc_resp = &fsinfo; |
EG Keizer | 37ca8f5 | 2008-08-19 16:34:36 -0400 | [diff] [blame] | 78 | status = rpc_call_sync(server->client, &msg, 0); |
| 79 | /* Retry with default authentication if different */ |
| 80 | if (status && server->nfs_client->cl_rpcclient != server->client) |
| 81 | status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 82 | dprintk("%s: reply statfs: %d\n", __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | if (status) |
| 84 | return status; |
| 85 | info->rtmax = NFS_MAXDATA; |
| 86 | info->rtpref = fsinfo.tsize; |
| 87 | info->rtmult = fsinfo.bsize; |
| 88 | info->wtmax = NFS_MAXDATA; |
| 89 | info->wtpref = fsinfo.tsize; |
| 90 | info->wtmult = fsinfo.bsize; |
| 91 | info->dtpref = fsinfo.tsize; |
| 92 | info->maxfilesize = 0x7FFFFFFF; |
| 93 | info->lease_time = 0; |
Trond Myklebust | eea4133 | 2021-09-26 14:05:04 -0400 | [diff] [blame^] | 94 | info->change_attr_type = NFS4_CHANGE_TYPE_IS_UNDEFINED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | /* |
| 99 | * One function for each procedure in the NFS protocol. |
| 100 | */ |
| 101 | static int |
| 102 | nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
Trond Myklebust | a841b54 | 2018-04-07 13:50:59 -0400 | [diff] [blame] | 103 | struct nfs_fattr *fattr, struct nfs4_label *label, |
| 104 | struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | { |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 106 | struct rpc_message msg = { |
| 107 | .rpc_proc = &nfs_procedures[NFSPROC_GETATTR], |
| 108 | .rpc_argp = fhandle, |
| 109 | .rpc_resp = fattr, |
| 110 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | int status; |
Trond Myklebust | c74dfe9 | 2020-01-06 15:39:37 -0500 | [diff] [blame] | 112 | unsigned short task_flags = 0; |
| 113 | |
| 114 | /* Is this is an attribute revalidation, subject to softreval? */ |
| 115 | if (inode && (server->flags & NFS_MOUNT_SOFTREVAL)) |
| 116 | task_flags |= RPC_TASK_TIMEOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | dprintk("NFS call getattr\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 119 | nfs_fattr_init(fattr); |
Trond Myklebust | c74dfe9 | 2020-01-06 15:39:37 -0500 | [diff] [blame] | 120 | status = rpc_call_sync(server->client, &msg, task_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | dprintk("NFS reply getattr: %d\n", status); |
| 122 | return status; |
| 123 | } |
| 124 | |
| 125 | static int |
| 126 | nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, |
| 127 | struct iattr *sattr) |
| 128 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 129 | struct inode *inode = d_inode(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | struct nfs_sattrargs arg = { |
| 131 | .fh = NFS_FH(inode), |
| 132 | .sattr = sattr |
| 133 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 134 | struct rpc_message msg = { |
| 135 | .rpc_proc = &nfs_procedures[NFSPROC_SETATTR], |
| 136 | .rpc_argp = &arg, |
| 137 | .rpc_resp = fattr, |
| 138 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | int status; |
| 140 | |
Trond Myklebust | cf3fff5 | 2006-01-03 09:55:53 +0100 | [diff] [blame] | 141 | /* Mask out the non-modebit related stuff from attr->ia_mode */ |
| 142 | sattr->ia_mode &= S_IALLUGO; |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | dprintk("NFS call setattr\n"); |
Trond Myklebust | 659bfcd | 2008-06-10 19:39:41 -0400 | [diff] [blame] | 145 | if (sattr->ia_valid & ATTR_FILE) |
| 146 | msg.rpc_cred = nfs_file_cred(sattr->ia_file); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 147 | nfs_fattr_init(fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 148 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Trond Myklebust | 65e4308 | 2005-08-16 11:49:44 -0400 | [diff] [blame] | 149 | if (status == 0) |
Trond Myklebust | f044636 | 2015-02-26 16:09:04 -0500 | [diff] [blame] | 150 | nfs_setattr_update_inode(inode, sattr, fattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | dprintk("NFS reply setattr: %d\n", status); |
| 152 | return status; |
| 153 | } |
| 154 | |
| 155 | static int |
Trond Myklebust | f7b37b8 | 2020-01-14 12:06:34 -0500 | [diff] [blame] | 156 | nfs_proc_lookup(struct inode *dir, struct dentry *dentry, |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 157 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
| 158 | struct nfs4_label *label) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
| 160 | struct nfs_diropargs arg = { |
| 161 | .fh = NFS_FH(dir), |
Trond Myklebust | f7b37b8 | 2020-01-14 12:06:34 -0500 | [diff] [blame] | 162 | .name = dentry->d_name.name, |
| 163 | .len = dentry->d_name.len |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | }; |
| 165 | struct nfs_diropok res = { |
| 166 | .fh = fhandle, |
| 167 | .fattr = fattr |
| 168 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 169 | struct rpc_message msg = { |
| 170 | .rpc_proc = &nfs_procedures[NFSPROC_LOOKUP], |
| 171 | .rpc_argp = &arg, |
| 172 | .rpc_resp = &res, |
| 173 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | int status; |
Trond Myklebust | f7b37b8 | 2020-01-14 12:06:34 -0500 | [diff] [blame] | 175 | unsigned short task_flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
Trond Myklebust | f7b37b8 | 2020-01-14 12:06:34 -0500 | [diff] [blame] | 177 | /* Is this is an attribute revalidation, subject to softreval? */ |
| 178 | if (nfs_lookup_is_soft_revalidate(dentry)) |
| 179 | task_flags |= RPC_TASK_TIMEOUT; |
| 180 | |
| 181 | dprintk("NFS call lookup %pd2\n", dentry); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 182 | nfs_fattr_init(fattr); |
Trond Myklebust | f7b37b8 | 2020-01-14 12:06:34 -0500 | [diff] [blame] | 183 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | dprintk("NFS reply lookup: %d\n", status); |
| 185 | return status; |
| 186 | } |
| 187 | |
| 188 | static int nfs_proc_readlink(struct inode *inode, struct page *page, |
| 189 | unsigned int pgbase, unsigned int pglen) |
| 190 | { |
| 191 | struct nfs_readlinkargs args = { |
| 192 | .fh = NFS_FH(inode), |
| 193 | .pgbase = pgbase, |
| 194 | .pglen = pglen, |
| 195 | .pages = &page |
| 196 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 197 | struct rpc_message msg = { |
| 198 | .rpc_proc = &nfs_procedures[NFSPROC_READLINK], |
| 199 | .rpc_argp = &args, |
| 200 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | int status; |
| 202 | |
| 203 | dprintk("NFS call readlink\n"); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 204 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | dprintk("NFS reply readlink: %d\n", status); |
| 206 | return status; |
| 207 | } |
| 208 | |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 209 | struct nfs_createdata { |
| 210 | struct nfs_createargs arg; |
| 211 | struct nfs_diropok res; |
| 212 | struct nfs_fh fhandle; |
| 213 | struct nfs_fattr fattr; |
| 214 | }; |
| 215 | |
| 216 | static struct nfs_createdata *nfs_alloc_createdata(struct inode *dir, |
| 217 | struct dentry *dentry, struct iattr *sattr) |
| 218 | { |
| 219 | struct nfs_createdata *data; |
| 220 | |
| 221 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
| 222 | |
| 223 | if (data != NULL) { |
| 224 | data->arg.fh = NFS_FH(dir); |
| 225 | data->arg.name = dentry->d_name.name; |
| 226 | data->arg.len = dentry->d_name.len; |
| 227 | data->arg.sattr = sattr; |
| 228 | nfs_fattr_init(&data->fattr); |
| 229 | data->fhandle.size = 0; |
| 230 | data->res.fh = &data->fhandle; |
| 231 | data->res.fattr = &data->fattr; |
| 232 | } |
| 233 | return data; |
| 234 | }; |
| 235 | |
| 236 | static void nfs_free_createdata(const struct nfs_createdata *data) |
| 237 | { |
| 238 | kfree(data); |
| 239 | } |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | static int |
| 242 | nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, |
Miklos Szeredi | 8867fe5 | 2012-06-05 15:10:19 +0200 | [diff] [blame] | 243 | int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 245 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 246 | struct rpc_message msg = { |
| 247 | .rpc_proc = &nfs_procedures[NFSPROC_CREATE], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 248 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 249 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
Al Viro | 6de1472 | 2013-09-16 10:53:17 -0400 | [diff] [blame] | 251 | dprintk("NFS call create %pd\n", dentry); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 252 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 253 | if (data == NULL) |
| 254 | goto out; |
| 255 | msg.rpc_argp = &data->arg; |
| 256 | msg.rpc_resp = &data->res; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 257 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | bad2a52 | 2007-10-20 13:07:21 -0400 | [diff] [blame] | 258 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | if (status == 0) |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 260 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 261 | nfs_free_createdata(data); |
| 262 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | dprintk("NFS reply create: %d\n", status); |
| 264 | return status; |
| 265 | } |
| 266 | |
| 267 | /* |
| 268 | * In NFSv2, mknod is grafted onto the create call. |
| 269 | */ |
| 270 | static int |
| 271 | nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, |
| 272 | dev_t rdev) |
| 273 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 274 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 275 | struct rpc_message msg = { |
| 276 | .rpc_proc = &nfs_procedures[NFSPROC_CREATE], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 277 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 278 | umode_t mode; |
| 279 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Al Viro | 6de1472 | 2013-09-16 10:53:17 -0400 | [diff] [blame] | 281 | dprintk("NFS call mknod %pd\n", dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
| 283 | mode = sattr->ia_mode; |
| 284 | if (S_ISFIFO(mode)) { |
| 285 | sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR; |
| 286 | sattr->ia_valid &= ~ATTR_SIZE; |
| 287 | } else if (S_ISCHR(mode) || S_ISBLK(mode)) { |
| 288 | sattr->ia_valid |= ATTR_SIZE; |
| 289 | sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */ |
| 290 | } |
| 291 | |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 292 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 293 | if (data == NULL) |
| 294 | goto out; |
| 295 | msg.rpc_argp = &data->arg; |
| 296 | msg.rpc_resp = &data->res; |
| 297 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 298 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 299 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
| 301 | if (status == -EINVAL && S_ISFIFO(mode)) { |
| 302 | sattr->ia_mode = mode; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 303 | nfs_fattr_init(data->res.fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 304 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | } |
| 306 | if (status == 0) |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 307 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 308 | nfs_free_createdata(data); |
| 309 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | dprintk("NFS reply mknod: %d\n", status); |
| 311 | return status; |
| 312 | } |
| 313 | |
| 314 | static int |
Trond Myklebust | 912678d | 2018-03-20 16:43:15 -0400 | [diff] [blame] | 315 | nfs_proc_remove(struct inode *dir, struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | { |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 317 | struct nfs_removeargs arg = { |
| 318 | .fh = NFS_FH(dir), |
Trond Myklebust | 912678d | 2018-03-20 16:43:15 -0400 | [diff] [blame] | 319 | .name = dentry->d_name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | }; |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 321 | struct rpc_message msg = { |
| 322 | .rpc_proc = &nfs_procedures[NFSPROC_REMOVE], |
| 323 | .rpc_argp = &arg, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | }; |
| 325 | int status; |
| 326 | |
Trond Myklebust | 912678d | 2018-03-20 16:43:15 -0400 | [diff] [blame] | 327 | dprintk("NFS call remove %pd2\n",dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 329 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
| 331 | dprintk("NFS reply remove: %d\n", status); |
| 332 | return status; |
| 333 | } |
| 334 | |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 335 | static void |
Trond Myklebust | ed7e9ad | 2018-05-30 16:11:52 -0400 | [diff] [blame] | 336 | nfs_proc_unlink_setup(struct rpc_message *msg, |
| 337 | struct dentry *dentry, |
| 338 | struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | } |
| 342 | |
Bryan Schumaker | 34e137c | 2012-03-19 14:54:41 -0400 | [diff] [blame] | 343 | static void nfs_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
| 344 | { |
| 345 | rpc_call_start(task); |
| 346 | } |
| 347 | |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 348 | static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | { |
Trond Myklebust | e4eff1a | 2007-07-14 15:39:58 -0400 | [diff] [blame] | 350 | nfs_mark_for_revalidate(dir); |
| 351 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 354 | static void |
Trond Myklebust | f2c2c55 | 2018-03-20 16:43:16 -0400 | [diff] [blame] | 355 | nfs_proc_rename_setup(struct rpc_message *msg, |
| 356 | struct dentry *old_dentry, |
| 357 | struct dentry *new_dentry) |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 358 | { |
| 359 | msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME]; |
| 360 | } |
| 361 | |
Bryan Schumaker | c6bfa1a | 2012-03-19 14:54:42 -0400 | [diff] [blame] | 362 | static void nfs_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
| 363 | { |
| 364 | rpc_call_start(task); |
| 365 | } |
| 366 | |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 367 | static int |
| 368 | nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir, |
| 369 | struct inode *new_dir) |
| 370 | { |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 371 | nfs_mark_for_revalidate(old_dir); |
| 372 | nfs_mark_for_revalidate(new_dir); |
| 373 | return 1; |
| 374 | } |
| 375 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | static int |
Al Viro | beffb8f | 2016-07-20 16:34:42 -0400 | [diff] [blame] | 377 | nfs_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | { |
| 379 | struct nfs_linkargs arg = { |
| 380 | .fromfh = NFS_FH(inode), |
| 381 | .tofh = NFS_FH(dir), |
| 382 | .toname = name->name, |
| 383 | .tolen = name->len |
| 384 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 385 | struct rpc_message msg = { |
| 386 | .rpc_proc = &nfs_procedures[NFSPROC_LINK], |
| 387 | .rpc_argp = &arg, |
| 388 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | int status; |
| 390 | |
| 391 | dprintk("NFS call link %s\n", name->name); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 392 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
Trond Myklebust | 5ba7cc4 | 2005-12-03 15:20:17 -0500 | [diff] [blame] | 393 | nfs_mark_for_revalidate(inode); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 394 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | dprintk("NFS reply link: %d\n", status); |
| 396 | return status; |
| 397 | } |
| 398 | |
| 399 | static int |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 400 | nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
| 401 | unsigned int len, struct iattr *sattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | { |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 403 | struct nfs_fh *fh; |
| 404 | struct nfs_fattr *fattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | struct nfs_symlinkargs arg = { |
| 406 | .fromfh = NFS_FH(dir), |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 407 | .fromname = dentry->d_name.name, |
| 408 | .fromlen = dentry->d_name.len, |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 409 | .pages = &page, |
| 410 | .pathlen = len, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | .sattr = sattr |
| 412 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 413 | struct rpc_message msg = { |
| 414 | .rpc_proc = &nfs_procedures[NFSPROC_SYMLINK], |
| 415 | .rpc_argp = &arg, |
| 416 | }; |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 417 | int status = -ENAMETOOLONG; |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 418 | |
Al Viro | 6de1472 | 2013-09-16 10:53:17 -0400 | [diff] [blame] | 419 | dprintk("NFS call symlink %pd\n", dentry); |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 420 | |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 421 | if (len > NFS2_MAXPATHLEN) |
| 422 | goto out; |
| 423 | |
| 424 | fh = nfs_alloc_fhandle(); |
| 425 | fattr = nfs_alloc_fattr(); |
| 426 | status = -ENOMEM; |
| 427 | if (fh == NULL || fattr == NULL) |
Jesper Juhl | 878215f | 2010-12-24 22:22:37 +0000 | [diff] [blame] | 428 | goto out_free; |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 429 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 430 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 431 | nfs_mark_for_revalidate(dir); |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 432 | |
| 433 | /* |
| 434 | * V2 SYMLINK requests don't return any attributes. Setting the |
| 435 | * filehandle size to zero indicates to nfs_instantiate that it |
| 436 | * should fill in the data with a LOOKUP call on the wire. |
| 437 | */ |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 438 | if (status == 0) |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 439 | status = nfs_instantiate(dentry, fh, fattr, NULL); |
Chuck Lever | 4f390c1 | 2006-08-22 20:06:22 -0400 | [diff] [blame] | 440 | |
Jesper Juhl | 878215f | 2010-12-24 22:22:37 +0000 | [diff] [blame] | 441 | out_free: |
Trond Myklebust | 23a3061 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 442 | nfs_free_fattr(fattr); |
| 443 | nfs_free_fhandle(fh); |
| 444 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | dprintk("NFS reply symlink: %d\n", status); |
| 446 | return status; |
| 447 | } |
| 448 | |
| 449 | static int |
| 450 | nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) |
| 451 | { |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 452 | struct nfs_createdata *data; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 453 | struct rpc_message msg = { |
| 454 | .rpc_proc = &nfs_procedures[NFSPROC_MKDIR], |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 455 | }; |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 456 | int status = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Al Viro | 6de1472 | 2013-09-16 10:53:17 -0400 | [diff] [blame] | 458 | dprintk("NFS call mkdir %pd\n", dentry); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 459 | data = nfs_alloc_createdata(dir, dentry, sattr); |
| 460 | if (data == NULL) |
| 461 | goto out; |
| 462 | msg.rpc_argp = &data->arg; |
| 463 | msg.rpc_resp = &data->res; |
| 464 | |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 465 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 466 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | if (status == 0) |
David Quigley | 1775fd3 | 2013-05-22 12:50:42 -0400 | [diff] [blame] | 468 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL); |
Trond Myklebust | eb872f0 | 2010-04-16 16:22:51 -0400 | [diff] [blame] | 469 | nfs_free_createdata(data); |
| 470 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | dprintk("NFS reply mkdir: %d\n", status); |
| 472 | return status; |
| 473 | } |
| 474 | |
| 475 | static int |
Al Viro | beffb8f | 2016-07-20 16:34:42 -0400 | [diff] [blame] | 476 | nfs_proc_rmdir(struct inode *dir, const struct qstr *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | { |
| 478 | struct nfs_diropargs arg = { |
| 479 | .fh = NFS_FH(dir), |
| 480 | .name = name->name, |
| 481 | .len = name->len |
| 482 | }; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 483 | struct rpc_message msg = { |
| 484 | .rpc_proc = &nfs_procedures[NFSPROC_RMDIR], |
| 485 | .rpc_argp = &arg, |
| 486 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | int status; |
| 488 | |
| 489 | dprintk("NFS call rmdir %s\n", name->name); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 490 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | decf491 | 2005-10-27 22:12:39 -0400 | [diff] [blame] | 491 | nfs_mark_for_revalidate(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | dprintk("NFS reply rmdir: %d\n", status); |
| 493 | return status; |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * The READDIR implementation is somewhat hackish - we pass a temporary |
| 498 | * buffer to the encode function, which installs it in the receive |
| 499 | * the receive iovec. The decode function just parses the reply to make |
| 500 | * sure it is syntactically correct; the entries itself are decoded |
| 501 | * from nfs_readdir by calling the decode_entry function directly. |
| 502 | */ |
Trond Myklebust | 82e22a5 | 2020-11-02 17:34:23 -0500 | [diff] [blame] | 503 | static int nfs_proc_readdir(struct nfs_readdir_arg *nr_arg, |
| 504 | struct nfs_readdir_res *nr_res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | { |
Trond Myklebust | 82e22a5 | 2020-11-02 17:34:23 -0500 | [diff] [blame] | 506 | struct inode *dir = d_inode(nr_arg->dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | struct nfs_readdirargs arg = { |
| 508 | .fh = NFS_FH(dir), |
Trond Myklebust | 82e22a5 | 2020-11-02 17:34:23 -0500 | [diff] [blame] | 509 | .cookie = nr_arg->cookie, |
| 510 | .count = nr_arg->page_len, |
| 511 | .pages = nr_arg->pages, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | }; |
| 513 | struct rpc_message msg = { |
| 514 | .rpc_proc = &nfs_procedures[NFSPROC_READDIR], |
| 515 | .rpc_argp = &arg, |
Trond Myklebust | 82e22a5 | 2020-11-02 17:34:23 -0500 | [diff] [blame] | 516 | .rpc_cred = nr_arg->cred, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | }; |
| 518 | int status; |
| 519 | |
Trond Myklebust | 82e22a5 | 2020-11-02 17:34:23 -0500 | [diff] [blame] | 520 | dprintk("NFS call readdir %llu\n", (unsigned long long)nr_arg->cookie); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
Trond Myklebust | 82e22a5 | 2020-11-02 17:34:23 -0500 | [diff] [blame] | 522 | nr_res->verf[0] = nr_res->verf[1] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
Trond Myklebust | c481299 | 2007-09-28 17:11:45 -0400 | [diff] [blame] | 524 | nfs_invalidate_atime(dir); |
| 525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | dprintk("NFS reply readdir: %d\n", status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | return status; |
| 528 | } |
| 529 | |
| 530 | static int |
| 531 | nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, |
| 532 | struct nfs_fsstat *stat) |
| 533 | { |
| 534 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 535 | struct rpc_message msg = { |
| 536 | .rpc_proc = &nfs_procedures[NFSPROC_STATFS], |
| 537 | .rpc_argp = fhandle, |
| 538 | .rpc_resp = &fsinfo, |
| 539 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | int status; |
| 541 | |
| 542 | dprintk("NFS call statfs\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 543 | nfs_fattr_init(stat->fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 544 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | dprintk("NFS reply statfs: %d\n", status); |
| 546 | if (status) |
| 547 | goto out; |
| 548 | stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; |
| 549 | stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; |
| 550 | stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; |
| 551 | stat->tfiles = 0; |
| 552 | stat->ffiles = 0; |
| 553 | stat->afiles = 0; |
| 554 | out: |
| 555 | return status; |
| 556 | } |
| 557 | |
| 558 | static int |
| 559 | nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, |
| 560 | struct nfs_fsinfo *info) |
| 561 | { |
| 562 | struct nfs2_fsstat fsinfo; |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 563 | struct rpc_message msg = { |
| 564 | .rpc_proc = &nfs_procedures[NFSPROC_STATFS], |
| 565 | .rpc_argp = fhandle, |
| 566 | .rpc_resp = &fsinfo, |
| 567 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | int status; |
| 569 | |
| 570 | dprintk("NFS call fsinfo\n"); |
Trond Myklebust | 0e574af | 2005-10-27 22:12:38 -0400 | [diff] [blame] | 571 | nfs_fattr_init(info->fattr); |
Chuck Lever | dead28d | 2006-03-20 13:44:23 -0500 | [diff] [blame] | 572 | status = rpc_call_sync(server->client, &msg, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | dprintk("NFS reply fsinfo: %d\n", status); |
| 574 | if (status) |
| 575 | goto out; |
| 576 | info->rtmax = NFS_MAXDATA; |
| 577 | info->rtpref = fsinfo.tsize; |
| 578 | info->rtmult = fsinfo.bsize; |
| 579 | info->wtmax = NFS_MAXDATA; |
| 580 | info->wtpref = fsinfo.tsize; |
| 581 | info->wtmult = fsinfo.bsize; |
| 582 | info->dtpref = fsinfo.tsize; |
| 583 | info->maxfilesize = 0x7FFFFFFF; |
| 584 | info->lease_time = 0; |
| 585 | out: |
| 586 | return status; |
| 587 | } |
| 588 | |
| 589 | static int |
| 590 | nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, |
| 591 | struct nfs_pathconf *info) |
| 592 | { |
| 593 | info->max_link = 0; |
| 594 | info->max_namelen = NFS2_MAXNAMLEN; |
| 595 | return 0; |
| 596 | } |
| 597 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 598 | static int nfs_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 600 | struct inode *inode = hdr->inode; |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 601 | |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 602 | nfs_invalidate_atime(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | if (task->tk_status >= 0) { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 604 | nfs_refresh_inode(inode, hdr->res.fattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | /* Emulate the eof flag, which isn't normally needed in NFSv2 |
| 606 | * as it is guaranteed to always return the file attributes |
| 607 | */ |
Trond Myklebust | 71affe9 | 2019-08-26 20:41:16 -0400 | [diff] [blame] | 608 | if ((hdr->res.count == 0 && hdr->args.count > 0) || |
| 609 | hdr->args.offset + hdr->res.count >= hdr->res.fattr->size) |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 610 | hdr->res.eof = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | } |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 612 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | } |
| 614 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 615 | static void nfs_proc_read_setup(struct nfs_pgio_header *hdr, |
| 616 | struct rpc_message *msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | { |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 618 | msg->rpc_proc = &nfs_procedures[NFSPROC_READ]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | } |
| 620 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 621 | static int nfs_proc_pgio_rpc_prepare(struct rpc_task *task, |
| 622 | struct nfs_pgio_header *hdr) |
Bryan Schumaker | ea7c330 | 2012-03-19 14:54:40 -0400 | [diff] [blame] | 623 | { |
| 624 | rpc_call_start(task); |
NeilBrown | ef1820f | 2013-09-04 17:04:49 +1000 | [diff] [blame] | 625 | return 0; |
Bryan Schumaker | ea7c330 | 2012-03-19 14:54:40 -0400 | [diff] [blame] | 626 | } |
| 627 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 628 | static int nfs_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | { |
Trond Myklebust | d33d4be | 2019-08-27 07:03:28 -0400 | [diff] [blame] | 630 | if (task->tk_status >= 0) { |
| 631 | hdr->res.count = hdr->args.count; |
Trond Myklebust | a08a8cd | 2015-02-26 17:36:09 -0500 | [diff] [blame] | 632 | nfs_writeback_update_inode(hdr); |
Trond Myklebust | d33d4be | 2019-08-27 07:03:28 -0400 | [diff] [blame] | 633 | } |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 634 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | } |
| 636 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 637 | static void nfs_proc_write_setup(struct nfs_pgio_header *hdr, |
Anna Schumaker | fb91fb0 | 2018-05-04 16:22:48 -0400 | [diff] [blame] | 638 | struct rpc_message *msg, |
| 639 | struct rpc_clnt **clnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 642 | hdr->args.stable = NFS_FILE_SYNC; |
Trond Myklebust | bdc7f02 | 2007-07-14 15:40:00 -0400 | [diff] [blame] | 643 | msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | } |
| 645 | |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 646 | static void nfs_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
| 647 | { |
| 648 | BUG(); |
| 649 | } |
| 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | static void |
Anna Schumaker | e9ae1ee | 2018-05-04 16:22:49 -0400 | [diff] [blame] | 652 | nfs_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg, |
| 653 | struct rpc_clnt **clnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | { |
| 655 | BUG(); |
| 656 | } |
| 657 | |
| 658 | static int |
| 659 | nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) |
| 660 | { |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 661 | struct inode *inode = file_inode(filp); |
Chuck Lever | 1093a60 | 2008-01-11 17:09:59 -0500 | [diff] [blame] | 662 | |
Benjamin Coddington | b1ece73 | 2017-04-11 12:50:11 -0400 | [diff] [blame] | 663 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | } |
| 665 | |
Trond Myklebust | 2116271 | 2008-05-20 19:34:39 -0400 | [diff] [blame] | 666 | /* Helper functions for NFS lock bounds checking */ |
| 667 | #define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL) |
| 668 | static int nfs_lock_check_bounds(const struct file_lock *fl) |
| 669 | { |
| 670 | __s32 start, end; |
| 671 | |
| 672 | start = (__s32)fl->fl_start; |
| 673 | if ((loff_t)start != fl->fl_start) |
| 674 | goto out_einval; |
| 675 | |
| 676 | if (fl->fl_end != OFFSET_MAX) { |
| 677 | end = (__s32)fl->fl_end; |
| 678 | if ((loff_t)end != fl->fl_end) |
| 679 | goto out_einval; |
| 680 | } else |
| 681 | end = NFS_LOCK32_OFFSET_MAX; |
| 682 | |
| 683 | if (start < 0 || start > end) |
| 684 | goto out_einval; |
| 685 | return 0; |
| 686 | out_einval: |
| 687 | return -EINVAL; |
| 688 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
Bryan Schumaker | 011e2a7 | 2012-06-20 15:53:43 -0400 | [diff] [blame] | 690 | static int nfs_have_delegation(struct inode *inode, fmode_t flags) |
| 691 | { |
| 692 | return 0; |
| 693 | } |
| 694 | |
Bryan Schumaker | 597d928 | 2012-07-16 16:39:10 -0400 | [diff] [blame] | 695 | static const struct inode_operations nfs_dir_inode_operations = { |
| 696 | .create = nfs_create, |
| 697 | .lookup = nfs_lookup, |
| 698 | .link = nfs_link, |
| 699 | .unlink = nfs_unlink, |
| 700 | .symlink = nfs_symlink, |
| 701 | .mkdir = nfs_mkdir, |
| 702 | .rmdir = nfs_rmdir, |
| 703 | .mknod = nfs_mknod, |
| 704 | .rename = nfs_rename, |
| 705 | .permission = nfs_permission, |
| 706 | .getattr = nfs_getattr, |
| 707 | .setattr = nfs_setattr, |
| 708 | }; |
| 709 | |
| 710 | static const struct inode_operations nfs_file_inode_operations = { |
| 711 | .permission = nfs_permission, |
| 712 | .getattr = nfs_getattr, |
| 713 | .setattr = nfs_setattr, |
| 714 | }; |
| 715 | |
David Howells | 509de81 | 2006-08-22 20:06:11 -0400 | [diff] [blame] | 716 | const struct nfs_rpc_ops nfs_v2_clientops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | .version = 2, /* protocol version */ |
| 718 | .dentry_ops = &nfs_dentry_operations, |
| 719 | .dir_inode_ops = &nfs_dir_inode_operations, |
J. Bruce Fields | 92cfc62 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 720 | .file_inode_ops = &nfs_file_inode_operations, |
Jeff Layton | 1788ea6 | 2011-11-04 13:31:21 -0400 | [diff] [blame] | 721 | .file_ops = &nfs_file_operations, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | .getroot = nfs_proc_get_root, |
Bryan Schumaker | 281cad4 | 2012-04-27 13:27:45 -0400 | [diff] [blame] | 723 | .submount = nfs_submount, |
David Howells | f2aedb7 | 2019-12-10 07:31:13 -0500 | [diff] [blame] | 724 | .try_get_tree = nfs_try_get_tree, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | .getattr = nfs_proc_getattr, |
| 726 | .setattr = nfs_proc_setattr, |
| 727 | .lookup = nfs_proc_lookup, |
| 728 | .access = NULL, /* access */ |
| 729 | .readlink = nfs_proc_readlink, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | .create = nfs_proc_create, |
| 731 | .remove = nfs_proc_remove, |
| 732 | .unlink_setup = nfs_proc_unlink_setup, |
Bryan Schumaker | 34e137c | 2012-03-19 14:54:41 -0400 | [diff] [blame] | 733 | .unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | .unlink_done = nfs_proc_unlink_done, |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 735 | .rename_setup = nfs_proc_rename_setup, |
Bryan Schumaker | c6bfa1a | 2012-03-19 14:54:42 -0400 | [diff] [blame] | 736 | .rename_rpc_prepare = nfs_proc_rename_rpc_prepare, |
Jeff Layton | d3d4152 | 2010-09-17 17:31:57 -0400 | [diff] [blame] | 737 | .rename_done = nfs_proc_rename_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | .link = nfs_proc_link, |
| 739 | .symlink = nfs_proc_symlink, |
| 740 | .mkdir = nfs_proc_mkdir, |
| 741 | .rmdir = nfs_proc_rmdir, |
| 742 | .readdir = nfs_proc_readdir, |
| 743 | .mknod = nfs_proc_mknod, |
| 744 | .statfs = nfs_proc_statfs, |
| 745 | .fsinfo = nfs_proc_fsinfo, |
| 746 | .pathconf = nfs_proc_pathconf, |
Chuck Lever | f796f8b | 2010-12-14 14:55:10 +0000 | [diff] [blame] | 747 | .decode_dirent = nfs2_decode_dirent, |
Anna Schumaker | a4cdda5 | 2014-05-06 09:12:31 -0400 | [diff] [blame] | 748 | .pgio_rpc_prepare = nfs_proc_pgio_rpc_prepare, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | .read_setup = nfs_proc_read_setup, |
Trond Myklebust | ec06c09 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 750 | .read_done = nfs_read_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | .write_setup = nfs_proc_write_setup, |
Trond Myklebust | 788e7a8 | 2006-03-20 13:44:27 -0500 | [diff] [blame] | 752 | .write_done = nfs_write_done, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | .commit_setup = nfs_proc_commit_setup, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 754 | .commit_rpc_prepare = nfs_proc_commit_rpc_prepare, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | .lock = nfs_proc_lock, |
Trond Myklebust | 2116271 | 2008-05-20 19:34:39 -0400 | [diff] [blame] | 756 | .lock_check_bounds = nfs_lock_check_bounds, |
Trond Myklebust | 7fe5c39 | 2009-03-19 15:35:50 -0400 | [diff] [blame] | 757 | .close_context = nfs_close_context, |
Bryan Schumaker | 011e2a7 | 2012-06-20 15:53:43 -0400 | [diff] [blame] | 758 | .have_delegation = nfs_have_delegation, |
Bryan Schumaker | 6663ee7 | 2012-06-20 15:53:46 -0400 | [diff] [blame] | 759 | .alloc_client = nfs_alloc_client, |
Andy Adamson | 45a52a0 | 2011-03-01 01:34:08 +0000 | [diff] [blame] | 760 | .init_client = nfs_init_client, |
Bryan Schumaker | cdb7ece | 2012-06-20 15:53:45 -0400 | [diff] [blame] | 761 | .free_client = nfs_free_client, |
Bryan Schumaker | 1179acc | 2012-07-30 16:05:19 -0400 | [diff] [blame] | 762 | .create_server = nfs_create_server, |
| 763 | .clone_server = nfs_clone_server, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | }; |