| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Process version 3 NFS requests. |
| * |
| * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de> |
| */ |
| |
| #include <linux/fs.h> |
| #include <linux/ext2_fs.h> |
| #include <linux/magic.h> |
| |
| #include "cache.h" |
| #include "xdr3.h" |
| #include "vfs.h" |
| |
| #define NFSDDBG_FACILITY NFSDDBG_PROC |
| |
| static int nfs3_ftypes[] = { |
| 0, /* NF3NON */ |
| S_IFREG, /* NF3REG */ |
| S_IFDIR, /* NF3DIR */ |
| S_IFBLK, /* NF3BLK */ |
| S_IFCHR, /* NF3CHR */ |
| S_IFLNK, /* NF3LNK */ |
| S_IFSOCK, /* NF3SOCK */ |
| S_IFIFO, /* NF3FIFO */ |
| }; |
| |
| /* |
| * NULL call. |
| */ |
| static __be32 |
| nfsd3_proc_null(struct svc_rqst *rqstp) |
| { |
| return rpc_success; |
| } |
| |
| /* |
| * Get a file's attributes |
| */ |
| static __be32 |
| nfsd3_proc_getattr(struct svc_rqst *rqstp) |
| { |
| struct nfsd_fhandle *argp = rqstp->rq_argp; |
| struct nfsd3_attrstat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: GETATTR(3) %s\n", |
| SVCFH_fmt(&argp->fh)); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| resp->status = fh_verify(rqstp, &resp->fh, 0, |
| NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); |
| if (resp->status != nfs_ok) |
| goto out; |
| |
| resp->status = fh_getattr(&resp->fh, &resp->stat); |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * Set a file's attributes |
| */ |
| static __be32 |
| nfsd3_proc_setattr(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_sattrargs *argp = rqstp->rq_argp; |
| struct nfsd3_attrstat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: SETATTR(3) %s\n", |
| SVCFH_fmt(&argp->fh)); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| resp->status = nfsd_setattr(rqstp, &resp->fh, &argp->attrs, |
| argp->check_guard, argp->guardtime); |
| return rpc_success; |
| } |
| |
| /* |
| * Look up a path name component |
| */ |
| static __be32 |
| nfsd3_proc_lookup(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_diropargs *argp = rqstp->rq_argp; |
| struct nfsd3_diropres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: LOOKUP(3) %s %.*s\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, |
| argp->name); |
| |
| fh_copy(&resp->dirfh, &argp->fh); |
| fh_init(&resp->fh, NFS3_FHSIZE); |
| |
| resp->status = nfsd_lookup(rqstp, &resp->dirfh, |
| argp->name, argp->len, |
| &resp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Check file access |
| */ |
| static __be32 |
| nfsd3_proc_access(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_accessargs *argp = rqstp->rq_argp; |
| struct nfsd3_accessres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: ACCESS(3) %s 0x%x\n", |
| SVCFH_fmt(&argp->fh), |
| argp->access); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| resp->access = argp->access; |
| resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL); |
| return rpc_success; |
| } |
| |
| /* |
| * Read a symlink. |
| */ |
| static __be32 |
| nfsd3_proc_readlink(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_readlinkargs *argp = rqstp->rq_argp; |
| struct nfsd3_readlinkres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh)); |
| |
| /* Read the symlink. */ |
| fh_copy(&resp->fh, &argp->fh); |
| resp->len = NFS3_MAXPATHLEN; |
| resp->status = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len); |
| return rpc_success; |
| } |
| |
| /* |
| * Read a portion of a file. |
| */ |
| static __be32 |
| nfsd3_proc_read(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_readargs *argp = rqstp->rq_argp; |
| struct nfsd3_readres *resp = rqstp->rq_resp; |
| u32 max_blocksize = svc_max_payload(rqstp); |
| unsigned long cnt = min(argp->count, max_blocksize); |
| |
| dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n", |
| SVCFH_fmt(&argp->fh), |
| (unsigned long) argp->count, |
| (unsigned long long) argp->offset); |
| |
| /* Obtain buffer pointer for payload. |
| * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof) |
| * + 1 (xdr opaque byte count) = 26 |
| */ |
| resp->count = cnt; |
| svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| resp->status = nfsd_read(rqstp, &resp->fh, argp->offset, |
| rqstp->rq_vec, argp->vlen, &resp->count, |
| &resp->eof); |
| return rpc_success; |
| } |
| |
| /* |
| * Write data to a file |
| */ |
| static __be32 |
| nfsd3_proc_write(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_writeargs *argp = rqstp->rq_argp; |
| struct nfsd3_writeres *resp = rqstp->rq_resp; |
| unsigned long cnt = argp->len; |
| unsigned int nvecs; |
| |
| dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, |
| (unsigned long long) argp->offset, |
| argp->stable? " stable" : ""); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| resp->committed = argp->stable; |
| nvecs = svc_fill_write_vector(rqstp, rqstp->rq_arg.pages, |
| &argp->first, cnt); |
| if (!nvecs) { |
| resp->status = nfserr_io; |
| goto out; |
| } |
| resp->status = nfsd_write(rqstp, &resp->fh, argp->offset, |
| rqstp->rq_vec, nvecs, &cnt, |
| resp->committed, resp->verf); |
| resp->count = cnt; |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * With NFSv3, CREATE processing is a lot easier than with NFSv2. |
| * At least in theory; we'll see how it fares in practice when the |
| * first reports about SunOS compatibility problems start to pour in... |
| */ |
| static __be32 |
| nfsd3_proc_create(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_createargs *argp = rqstp->rq_argp; |
| struct nfsd3_diropres *resp = rqstp->rq_resp; |
| svc_fh *dirfhp, *newfhp = NULL; |
| struct iattr *attr; |
| |
| dprintk("nfsd: CREATE(3) %s %.*s\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, |
| argp->name); |
| |
| dirfhp = fh_copy(&resp->dirfh, &argp->fh); |
| newfhp = fh_init(&resp->fh, NFS3_FHSIZE); |
| attr = &argp->attrs; |
| |
| /* Unfudge the mode bits */ |
| attr->ia_mode &= ~S_IFMT; |
| if (!(attr->ia_valid & ATTR_MODE)) { |
| attr->ia_valid |= ATTR_MODE; |
| attr->ia_mode = S_IFREG; |
| } else { |
| attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG; |
| } |
| |
| /* Now create the file and set attributes */ |
| resp->status = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len, |
| attr, newfhp, argp->createmode, |
| (u32 *)argp->verf, NULL, NULL); |
| return rpc_success; |
| } |
| |
| /* |
| * Make directory. This operation is not idempotent. |
| */ |
| static __be32 |
| nfsd3_proc_mkdir(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_createargs *argp = rqstp->rq_argp; |
| struct nfsd3_diropres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: MKDIR(3) %s %.*s\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, |
| argp->name); |
| |
| argp->attrs.ia_valid &= ~ATTR_SIZE; |
| fh_copy(&resp->dirfh, &argp->fh); |
| fh_init(&resp->fh, NFS3_FHSIZE); |
| resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, |
| &argp->attrs, S_IFDIR, 0, &resp->fh); |
| fh_unlock(&resp->dirfh); |
| return rpc_success; |
| } |
| |
| static __be32 |
| nfsd3_proc_symlink(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_symlinkargs *argp = rqstp->rq_argp; |
| struct nfsd3_diropres *resp = rqstp->rq_resp; |
| |
| if (argp->tlen == 0) { |
| resp->status = nfserr_inval; |
| goto out; |
| } |
| if (argp->tlen > NFS3_MAXPATHLEN) { |
| resp->status = nfserr_nametoolong; |
| goto out; |
| } |
| |
| argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first, |
| page_address(rqstp->rq_arg.pages[0]), |
| argp->tlen); |
| if (IS_ERR(argp->tname)) { |
| resp->status = nfserrno(PTR_ERR(argp->tname)); |
| goto out; |
| } |
| |
| dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n", |
| SVCFH_fmt(&argp->ffh), |
| argp->flen, argp->fname, |
| argp->tlen, argp->tname); |
| |
| fh_copy(&resp->dirfh, &argp->ffh); |
| fh_init(&resp->fh, NFS3_FHSIZE); |
| resp->status = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, |
| argp->flen, argp->tname, &resp->fh); |
| kfree(argp->tname); |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * Make socket/fifo/device. |
| */ |
| static __be32 |
| nfsd3_proc_mknod(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_mknodargs *argp = rqstp->rq_argp; |
| struct nfsd3_diropres *resp = rqstp->rq_resp; |
| int type; |
| dev_t rdev = 0; |
| |
| dprintk("nfsd: MKNOD(3) %s %.*s\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, |
| argp->name); |
| |
| fh_copy(&resp->dirfh, &argp->fh); |
| fh_init(&resp->fh, NFS3_FHSIZE); |
| |
| if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) { |
| rdev = MKDEV(argp->major, argp->minor); |
| if (MAJOR(rdev) != argp->major || |
| MINOR(rdev) != argp->minor) { |
| resp->status = nfserr_inval; |
| goto out; |
| } |
| } else if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) { |
| resp->status = nfserr_badtype; |
| goto out; |
| } |
| |
| type = nfs3_ftypes[argp->ftype]; |
| resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len, |
| &argp->attrs, type, rdev, &resp->fh); |
| fh_unlock(&resp->dirfh); |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * Remove file/fifo/socket etc. |
| */ |
| static __be32 |
| nfsd3_proc_remove(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_diropargs *argp = rqstp->rq_argp; |
| struct nfsd3_attrstat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: REMOVE(3) %s %.*s\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, |
| argp->name); |
| |
| /* Unlink. -S_IFDIR means file must not be a directory */ |
| fh_copy(&resp->fh, &argp->fh); |
| resp->status = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, |
| argp->name, argp->len); |
| fh_unlock(&resp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Remove a directory |
| */ |
| static __be32 |
| nfsd3_proc_rmdir(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_diropargs *argp = rqstp->rq_argp; |
| struct nfsd3_attrstat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: RMDIR(3) %s %.*s\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, |
| argp->name); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| resp->status = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, |
| argp->name, argp->len); |
| fh_unlock(&resp->fh); |
| return rpc_success; |
| } |
| |
| static __be32 |
| nfsd3_proc_rename(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_renameargs *argp = rqstp->rq_argp; |
| struct nfsd3_renameres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: RENAME(3) %s %.*s ->\n", |
| SVCFH_fmt(&argp->ffh), |
| argp->flen, |
| argp->fname); |
| dprintk("nfsd: -> %s %.*s\n", |
| SVCFH_fmt(&argp->tfh), |
| argp->tlen, |
| argp->tname); |
| |
| fh_copy(&resp->ffh, &argp->ffh); |
| fh_copy(&resp->tfh, &argp->tfh); |
| resp->status = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen, |
| &resp->tfh, argp->tname, argp->tlen); |
| return rpc_success; |
| } |
| |
| static __be32 |
| nfsd3_proc_link(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_linkargs *argp = rqstp->rq_argp; |
| struct nfsd3_linkres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: LINK(3) %s ->\n", |
| SVCFH_fmt(&argp->ffh)); |
| dprintk("nfsd: -> %s %.*s\n", |
| SVCFH_fmt(&argp->tfh), |
| argp->tlen, |
| argp->tname); |
| |
| fh_copy(&resp->fh, &argp->ffh); |
| fh_copy(&resp->tfh, &argp->tfh); |
| resp->status = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen, |
| &resp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Read a portion of a directory. |
| */ |
| static __be32 |
| nfsd3_proc_readdir(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_readdirargs *argp = rqstp->rq_argp; |
| struct nfsd3_readdirres *resp = rqstp->rq_resp; |
| int count = 0; |
| struct page **p; |
| caddr_t page_addr = NULL; |
| |
| dprintk("nfsd: READDIR(3) %s %d bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->count, (u32) argp->cookie); |
| |
| /* Make sure we've room for the NULL ptr & eof flag, and shrink to |
| * client read size */ |
| count = (argp->count >> 2) - 2; |
| |
| /* Read directory and encode entries on the fly */ |
| fh_copy(&resp->fh, &argp->fh); |
| |
| resp->buflen = count; |
| resp->common.err = nfs_ok; |
| resp->buffer = argp->buffer; |
| resp->rqstp = rqstp; |
| resp->status = nfsd_readdir(rqstp, &resp->fh, (loff_t *)&argp->cookie, |
| &resp->common, nfs3svc_encode_entry); |
| memcpy(resp->verf, argp->verf, 8); |
| count = 0; |
| for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) { |
| page_addr = page_address(*p); |
| |
| if (((caddr_t)resp->buffer >= page_addr) && |
| ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) { |
| count += (caddr_t)resp->buffer - page_addr; |
| break; |
| } |
| count += PAGE_SIZE; |
| } |
| resp->count = count >> 2; |
| if (resp->offset) { |
| loff_t offset = argp->cookie; |
| |
| if (unlikely(resp->offset1)) { |
| /* we ended up with offset on a page boundary */ |
| *resp->offset = htonl(offset >> 32); |
| *resp->offset1 = htonl(offset & 0xffffffff); |
| resp->offset1 = NULL; |
| } else { |
| xdr_encode_hyper(resp->offset, offset); |
| } |
| resp->offset = NULL; |
| } |
| |
| return rpc_success; |
| } |
| |
| /* |
| * Read a portion of a directory, including file handles and attrs. |
| * For now, we choose to ignore the dircount parameter. |
| */ |
| static __be32 |
| nfsd3_proc_readdirplus(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_readdirargs *argp = rqstp->rq_argp; |
| struct nfsd3_readdirres *resp = rqstp->rq_resp; |
| int count = 0; |
| loff_t offset; |
| struct page **p; |
| caddr_t page_addr = NULL; |
| |
| dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->count, (u32) argp->cookie); |
| |
| /* Convert byte count to number of words (i.e. >> 2), |
| * and reserve room for the NULL ptr & eof flag (-2 words) */ |
| resp->count = (argp->count >> 2) - 2; |
| |
| /* Read directory and encode entries on the fly */ |
| fh_copy(&resp->fh, &argp->fh); |
| |
| resp->common.err = nfs_ok; |
| resp->buffer = argp->buffer; |
| resp->buflen = resp->count; |
| resp->rqstp = rqstp; |
| offset = argp->cookie; |
| |
| resp->status = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP); |
| if (resp->status != nfs_ok) |
| goto out; |
| |
| if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS) { |
| resp->status = nfserr_notsupp; |
| goto out; |
| } |
| |
| resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, |
| &resp->common, nfs3svc_encode_entry_plus); |
| memcpy(resp->verf, argp->verf, 8); |
| for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) { |
| page_addr = page_address(*p); |
| |
| if (((caddr_t)resp->buffer >= page_addr) && |
| ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) { |
| count += (caddr_t)resp->buffer - page_addr; |
| break; |
| } |
| count += PAGE_SIZE; |
| } |
| resp->count = count >> 2; |
| if (resp->offset) { |
| if (unlikely(resp->offset1)) { |
| /* we ended up with offset on a page boundary */ |
| *resp->offset = htonl(offset >> 32); |
| *resp->offset1 = htonl(offset & 0xffffffff); |
| resp->offset1 = NULL; |
| } else { |
| xdr_encode_hyper(resp->offset, offset); |
| } |
| resp->offset = NULL; |
| } |
| |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * Get file system stats |
| */ |
| static __be32 |
| nfsd3_proc_fsstat(struct svc_rqst *rqstp) |
| { |
| struct nfsd_fhandle *argp = rqstp->rq_argp; |
| struct nfsd3_fsstatres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: FSSTAT(3) %s\n", |
| SVCFH_fmt(&argp->fh)); |
| |
| resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0); |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Get file system info |
| */ |
| static __be32 |
| nfsd3_proc_fsinfo(struct svc_rqst *rqstp) |
| { |
| struct nfsd_fhandle *argp = rqstp->rq_argp; |
| struct nfsd3_fsinfores *resp = rqstp->rq_resp; |
| u32 max_blocksize = svc_max_payload(rqstp); |
| |
| dprintk("nfsd: FSINFO(3) %s\n", |
| SVCFH_fmt(&argp->fh)); |
| |
| resp->f_rtmax = max_blocksize; |
| resp->f_rtpref = max_blocksize; |
| resp->f_rtmult = PAGE_SIZE; |
| resp->f_wtmax = max_blocksize; |
| resp->f_wtpref = max_blocksize; |
| resp->f_wtmult = PAGE_SIZE; |
| resp->f_dtpref = max_blocksize; |
| resp->f_maxfilesize = ~(u32) 0; |
| resp->f_properties = NFS3_FSF_DEFAULT; |
| |
| resp->status = fh_verify(rqstp, &argp->fh, 0, |
| NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); |
| |
| /* Check special features of the file system. May request |
| * different read/write sizes for file systems known to have |
| * problems with large blocks */ |
| if (resp->status == nfs_ok) { |
| struct super_block *sb = argp->fh.fh_dentry->d_sb; |
| |
| /* Note that we don't care for remote fs's here */ |
| if (sb->s_magic == MSDOS_SUPER_MAGIC) { |
| resp->f_properties = NFS3_FSF_BILLYBOY; |
| } |
| resp->f_maxfilesize = sb->s_maxbytes; |
| } |
| |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Get pathconf info for the specified file |
| */ |
| static __be32 |
| nfsd3_proc_pathconf(struct svc_rqst *rqstp) |
| { |
| struct nfsd_fhandle *argp = rqstp->rq_argp; |
| struct nfsd3_pathconfres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: PATHCONF(3) %s\n", |
| SVCFH_fmt(&argp->fh)); |
| |
| /* Set default pathconf */ |
| resp->p_link_max = 255; /* at least */ |
| resp->p_name_max = 255; /* at least */ |
| resp->p_no_trunc = 0; |
| resp->p_chown_restricted = 1; |
| resp->p_case_insensitive = 0; |
| resp->p_case_preserving = 1; |
| |
| resp->status = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP); |
| |
| if (resp->status == nfs_ok) { |
| struct super_block *sb = argp->fh.fh_dentry->d_sb; |
| |
| /* Note that we don't care for remote fs's here */ |
| switch (sb->s_magic) { |
| case EXT2_SUPER_MAGIC: |
| resp->p_link_max = EXT2_LINK_MAX; |
| resp->p_name_max = EXT2_NAME_LEN; |
| break; |
| case MSDOS_SUPER_MAGIC: |
| resp->p_case_insensitive = 1; |
| resp->p_case_preserving = 0; |
| break; |
| } |
| } |
| |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Commit a file (range) to stable storage. |
| */ |
| static __be32 |
| nfsd3_proc_commit(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_commitargs *argp = rqstp->rq_argp; |
| struct nfsd3_commitres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: COMMIT(3) %s %u@%Lu\n", |
| SVCFH_fmt(&argp->fh), |
| argp->count, |
| (unsigned long long) argp->offset); |
| |
| if (argp->offset > NFS_OFFSET_MAX) { |
| resp->status = nfserr_inval; |
| goto out; |
| } |
| |
| fh_copy(&resp->fh, &argp->fh); |
| resp->status = nfsd_commit(rqstp, &resp->fh, argp->offset, |
| argp->count, resp->verf); |
| out: |
| return rpc_success; |
| } |
| |
| |
| /* |
| * NFSv3 Server procedures. |
| * Only the results of non-idempotent operations are cached. |
| */ |
| #define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle |
| #define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat |
| #define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat |
| #define nfsd3_mkdirargs nfsd3_createargs |
| #define nfsd3_readdirplusargs nfsd3_readdirargs |
| #define nfsd3_fhandleargs nfsd_fhandle |
| #define nfsd3_attrstatres nfsd3_attrstat |
| #define nfsd3_wccstatres nfsd3_attrstat |
| #define nfsd3_createres nfsd3_diropres |
| |
| #define ST 1 /* status*/ |
| #define FH 17 /* filehandle with length */ |
| #define AT 21 /* attributes */ |
| #define pAT (1+AT) /* post attributes - conditional */ |
| #define WC (7+pAT) /* WCC attributes */ |
| |
| static const struct svc_procedure nfsd_procedures3[22] = { |
| [NFS3PROC_NULL] = { |
| .pc_func = nfsd3_proc_null, |
| .pc_decode = nfssvc_decode_voidarg, |
| .pc_encode = nfssvc_encode_voidres, |
| .pc_argsize = sizeof(struct nfsd_voidargs), |
| .pc_ressize = sizeof(struct nfsd_voidres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST, |
| }, |
| [NFS3PROC_GETATTR] = { |
| .pc_func = nfsd3_proc_getattr, |
| .pc_decode = nfs3svc_decode_fhandleargs, |
| .pc_encode = nfs3svc_encode_attrstatres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_fhandleargs), |
| .pc_ressize = sizeof(struct nfsd3_attrstatres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+AT, |
| }, |
| [NFS3PROC_SETATTR] = { |
| .pc_func = nfsd3_proc_setattr, |
| .pc_decode = nfs3svc_decode_sattrargs, |
| .pc_encode = nfs3svc_encode_wccstatres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_sattrargs), |
| .pc_ressize = sizeof(struct nfsd3_wccstatres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+WC, |
| }, |
| [NFS3PROC_LOOKUP] = { |
| .pc_func = nfsd3_proc_lookup, |
| .pc_decode = nfs3svc_decode_diropargs, |
| .pc_encode = nfs3svc_encode_diropres, |
| .pc_release = nfs3svc_release_fhandle2, |
| .pc_argsize = sizeof(struct nfsd3_diropargs), |
| .pc_ressize = sizeof(struct nfsd3_diropres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+FH+pAT+pAT, |
| }, |
| [NFS3PROC_ACCESS] = { |
| .pc_func = nfsd3_proc_access, |
| .pc_decode = nfs3svc_decode_accessargs, |
| .pc_encode = nfs3svc_encode_accessres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_accessargs), |
| .pc_ressize = sizeof(struct nfsd3_accessres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+pAT+1, |
| }, |
| [NFS3PROC_READLINK] = { |
| .pc_func = nfsd3_proc_readlink, |
| .pc_decode = nfs3svc_decode_readlinkargs, |
| .pc_encode = nfs3svc_encode_readlinkres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_readlinkargs), |
| .pc_ressize = sizeof(struct nfsd3_readlinkres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4, |
| }, |
| [NFS3PROC_READ] = { |
| .pc_func = nfsd3_proc_read, |
| .pc_decode = nfs3svc_decode_readargs, |
| .pc_encode = nfs3svc_encode_readres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_readargs), |
| .pc_ressize = sizeof(struct nfsd3_readres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4, |
| }, |
| [NFS3PROC_WRITE] = { |
| .pc_func = nfsd3_proc_write, |
| .pc_decode = nfs3svc_decode_writeargs, |
| .pc_encode = nfs3svc_encode_writeres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_writeargs), |
| .pc_ressize = sizeof(struct nfsd3_writeres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+WC+4, |
| }, |
| [NFS3PROC_CREATE] = { |
| .pc_func = nfsd3_proc_create, |
| .pc_decode = nfs3svc_decode_createargs, |
| .pc_encode = nfs3svc_encode_createres, |
| .pc_release = nfs3svc_release_fhandle2, |
| .pc_argsize = sizeof(struct nfsd3_createargs), |
| .pc_ressize = sizeof(struct nfsd3_createres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+(1+FH+pAT)+WC, |
| }, |
| [NFS3PROC_MKDIR] = { |
| .pc_func = nfsd3_proc_mkdir, |
| .pc_decode = nfs3svc_decode_mkdirargs, |
| .pc_encode = nfs3svc_encode_createres, |
| .pc_release = nfs3svc_release_fhandle2, |
| .pc_argsize = sizeof(struct nfsd3_mkdirargs), |
| .pc_ressize = sizeof(struct nfsd3_createres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+(1+FH+pAT)+WC, |
| }, |
| [NFS3PROC_SYMLINK] = { |
| .pc_func = nfsd3_proc_symlink, |
| .pc_decode = nfs3svc_decode_symlinkargs, |
| .pc_encode = nfs3svc_encode_createres, |
| .pc_release = nfs3svc_release_fhandle2, |
| .pc_argsize = sizeof(struct nfsd3_symlinkargs), |
| .pc_ressize = sizeof(struct nfsd3_createres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+(1+FH+pAT)+WC, |
| }, |
| [NFS3PROC_MKNOD] = { |
| .pc_func = nfsd3_proc_mknod, |
| .pc_decode = nfs3svc_decode_mknodargs, |
| .pc_encode = nfs3svc_encode_createres, |
| .pc_release = nfs3svc_release_fhandle2, |
| .pc_argsize = sizeof(struct nfsd3_mknodargs), |
| .pc_ressize = sizeof(struct nfsd3_createres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+(1+FH+pAT)+WC, |
| }, |
| [NFS3PROC_REMOVE] = { |
| .pc_func = nfsd3_proc_remove, |
| .pc_decode = nfs3svc_decode_diropargs, |
| .pc_encode = nfs3svc_encode_wccstatres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_diropargs), |
| .pc_ressize = sizeof(struct nfsd3_wccstatres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+WC, |
| }, |
| [NFS3PROC_RMDIR] = { |
| .pc_func = nfsd3_proc_rmdir, |
| .pc_decode = nfs3svc_decode_diropargs, |
| .pc_encode = nfs3svc_encode_wccstatres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_diropargs), |
| .pc_ressize = sizeof(struct nfsd3_wccstatres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+WC, |
| }, |
| [NFS3PROC_RENAME] = { |
| .pc_func = nfsd3_proc_rename, |
| .pc_decode = nfs3svc_decode_renameargs, |
| .pc_encode = nfs3svc_encode_renameres, |
| .pc_release = nfs3svc_release_fhandle2, |
| .pc_argsize = sizeof(struct nfsd3_renameargs), |
| .pc_ressize = sizeof(struct nfsd3_renameres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+WC+WC, |
| }, |
| [NFS3PROC_LINK] = { |
| .pc_func = nfsd3_proc_link, |
| .pc_decode = nfs3svc_decode_linkargs, |
| .pc_encode = nfs3svc_encode_linkres, |
| .pc_release = nfs3svc_release_fhandle2, |
| .pc_argsize = sizeof(struct nfsd3_linkargs), |
| .pc_ressize = sizeof(struct nfsd3_linkres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+pAT+WC, |
| }, |
| [NFS3PROC_READDIR] = { |
| .pc_func = nfsd3_proc_readdir, |
| .pc_decode = nfs3svc_decode_readdirargs, |
| .pc_encode = nfs3svc_encode_readdirres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_readdirargs), |
| .pc_ressize = sizeof(struct nfsd3_readdirres), |
| .pc_cachetype = RC_NOCACHE, |
| }, |
| [NFS3PROC_READDIRPLUS] = { |
| .pc_func = nfsd3_proc_readdirplus, |
| .pc_decode = nfs3svc_decode_readdirplusargs, |
| .pc_encode = nfs3svc_encode_readdirres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_readdirplusargs), |
| .pc_ressize = sizeof(struct nfsd3_readdirres), |
| .pc_cachetype = RC_NOCACHE, |
| }, |
| [NFS3PROC_FSSTAT] = { |
| .pc_func = nfsd3_proc_fsstat, |
| .pc_decode = nfs3svc_decode_fhandleargs, |
| .pc_encode = nfs3svc_encode_fsstatres, |
| .pc_argsize = sizeof(struct nfsd3_fhandleargs), |
| .pc_ressize = sizeof(struct nfsd3_fsstatres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+pAT+2*6+1, |
| }, |
| [NFS3PROC_FSINFO] = { |
| .pc_func = nfsd3_proc_fsinfo, |
| .pc_decode = nfs3svc_decode_fhandleargs, |
| .pc_encode = nfs3svc_encode_fsinfores, |
| .pc_argsize = sizeof(struct nfsd3_fhandleargs), |
| .pc_ressize = sizeof(struct nfsd3_fsinfores), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+pAT+12, |
| }, |
| [NFS3PROC_PATHCONF] = { |
| .pc_func = nfsd3_proc_pathconf, |
| .pc_decode = nfs3svc_decode_fhandleargs, |
| .pc_encode = nfs3svc_encode_pathconfres, |
| .pc_argsize = sizeof(struct nfsd3_fhandleargs), |
| .pc_ressize = sizeof(struct nfsd3_pathconfres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+pAT+6, |
| }, |
| [NFS3PROC_COMMIT] = { |
| .pc_func = nfsd3_proc_commit, |
| .pc_decode = nfs3svc_decode_commitargs, |
| .pc_encode = nfs3svc_encode_commitres, |
| .pc_release = nfs3svc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd3_commitargs), |
| .pc_ressize = sizeof(struct nfsd3_commitres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+WC+2, |
| }, |
| }; |
| |
| static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures3)]; |
| const struct svc_version nfsd_version3 = { |
| .vs_vers = 3, |
| .vs_nproc = 22, |
| .vs_proc = nfsd_procedures3, |
| .vs_dispatch = nfsd_dispatch, |
| .vs_count = nfsd_count3, |
| .vs_xdrsize = NFS3_SVC_XDRSIZE, |
| }; |