| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Process version 2 NFS requests. |
| * |
| * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
| */ |
| |
| #include <linux/namei.h> |
| |
| #include "cache.h" |
| #include "xdr.h" |
| #include "vfs.h" |
| |
| #define NFSDDBG_FACILITY NFSDDBG_PROC |
| |
| static __be32 |
| nfsd_proc_null(struct svc_rqst *rqstp) |
| { |
| return rpc_success; |
| } |
| |
| /* |
| * Get a file's attributes |
| * N.B. After this call resp->fh needs an fh_put |
| */ |
| static __be32 |
| nfsd_proc_getattr(struct svc_rqst *rqstp) |
| { |
| struct nfsd_fhandle *argp = rqstp->rq_argp; |
| struct nfsd_attrstat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: GETATTR %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 |
| * N.B. After this call resp->fh needs an fh_put |
| */ |
| static __be32 |
| nfsd_proc_setattr(struct svc_rqst *rqstp) |
| { |
| struct nfsd_sattrargs *argp = rqstp->rq_argp; |
| struct nfsd_attrstat *resp = rqstp->rq_resp; |
| struct iattr *iap = &argp->attrs; |
| struct svc_fh *fhp; |
| |
| dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", |
| SVCFH_fmt(&argp->fh), |
| argp->attrs.ia_valid, (long) argp->attrs.ia_size); |
| |
| fhp = fh_copy(&resp->fh, &argp->fh); |
| |
| /* |
| * NFSv2 does not differentiate between "set-[ac]time-to-now" |
| * which only requires access, and "set-[ac]time-to-X" which |
| * requires ownership. |
| * So if it looks like it might be "set both to the same time which |
| * is close to now", and if setattr_prepare fails, then we |
| * convert to "set to now" instead of "set to explicit time" |
| * |
| * We only call setattr_prepare as the last test as technically |
| * it is not an interface that we should be using. |
| */ |
| #define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET) |
| #define MAX_TOUCH_TIME_ERROR (30*60) |
| if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET && |
| iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) { |
| /* |
| * Looks probable. |
| * |
| * Now just make sure time is in the right ballpark. |
| * Solaris, at least, doesn't seem to care what the time |
| * request is. We require it be within 30 minutes of now. |
| */ |
| time64_t delta = iap->ia_atime.tv_sec - ktime_get_real_seconds(); |
| |
| resp->status = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP); |
| if (resp->status != nfs_ok) |
| goto out; |
| |
| if (delta < 0) |
| delta = -delta; |
| if (delta < MAX_TOUCH_TIME_ERROR && |
| setattr_prepare(&init_user_ns, fhp->fh_dentry, iap) != 0) { |
| /* |
| * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME. |
| * This will cause notify_change to set these times |
| * to "now" |
| */ |
| iap->ia_valid &= ~BOTH_TIME_SET; |
| } |
| } |
| |
| resp->status = nfsd_setattr(rqstp, fhp, iap, 0, (time64_t)0); |
| if (resp->status != nfs_ok) |
| goto out; |
| |
| resp->status = fh_getattr(&resp->fh, &resp->stat); |
| out: |
| return rpc_success; |
| } |
| |
| /* Obsolete, replaced by MNTPROC_MNT. */ |
| static __be32 |
| nfsd_proc_root(struct svc_rqst *rqstp) |
| { |
| return rpc_success; |
| } |
| |
| /* |
| * Look up a path name component |
| * Note: the dentry in the resp->fh may be negative if the file |
| * doesn't exist yet. |
| * N.B. After this call resp->fh needs an fh_put |
| */ |
| static __be32 |
| nfsd_proc_lookup(struct svc_rqst *rqstp) |
| { |
| struct nfsd_diropargs *argp = rqstp->rq_argp; |
| struct nfsd_diropres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: LOOKUP %s %.*s\n", |
| SVCFH_fmt(&argp->fh), argp->len, argp->name); |
| |
| fh_init(&resp->fh, NFS_FHSIZE); |
| resp->status = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len, |
| &resp->fh); |
| fh_put(&argp->fh); |
| if (resp->status != nfs_ok) |
| goto out; |
| |
| resp->status = fh_getattr(&resp->fh, &resp->stat); |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * Read a symlink. |
| */ |
| static __be32 |
| nfsd_proc_readlink(struct svc_rqst *rqstp) |
| { |
| struct nfsd_fhandle *argp = rqstp->rq_argp; |
| struct nfsd_readlinkres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh)); |
| |
| /* Read the symlink. */ |
| resp->len = NFS_MAXPATHLEN; |
| resp->page = *(rqstp->rq_next_page++); |
| resp->status = nfsd_readlink(rqstp, &argp->fh, |
| page_address(resp->page), &resp->len); |
| |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Read a portion of a file. |
| * N.B. After this call resp->fh needs an fh_put |
| */ |
| static __be32 |
| nfsd_proc_read(struct svc_rqst *rqstp) |
| { |
| struct nfsd_readargs *argp = rqstp->rq_argp; |
| struct nfsd_readres *resp = rqstp->rq_resp; |
| unsigned int len; |
| u32 eof; |
| int v; |
| |
| dprintk("nfsd: READ %s %d bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->count, argp->offset); |
| |
| argp->count = min_t(u32, argp->count, NFSSVC_MAXBLKSIZE_V2); |
| |
| v = 0; |
| len = argp->count; |
| resp->pages = rqstp->rq_next_page; |
| while (len > 0) { |
| struct page *page = *(rqstp->rq_next_page++); |
| |
| rqstp->rq_vec[v].iov_base = page_address(page); |
| rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE); |
| len -= rqstp->rq_vec[v].iov_len; |
| v++; |
| } |
| |
| /* Obtain buffer pointer for payload. 19 is 1 word for |
| * status, 17 words for fattr, and 1 word for the byte count. |
| */ |
| svc_reserve_auth(rqstp, (19<<2) + argp->count + 4); |
| |
| resp->count = argp->count; |
| fh_copy(&resp->fh, &argp->fh); |
| resp->status = nfsd_read(rqstp, &resp->fh, argp->offset, |
| rqstp->rq_vec, v, &resp->count, &eof); |
| if (resp->status == nfs_ok) |
| resp->status = fh_getattr(&resp->fh, &resp->stat); |
| else if (resp->status == nfserr_jukebox) |
| return rpc_drop_reply; |
| return rpc_success; |
| } |
| |
| /* Reserved */ |
| static __be32 |
| nfsd_proc_writecache(struct svc_rqst *rqstp) |
| { |
| return rpc_success; |
| } |
| |
| /* |
| * Write data to a file |
| * N.B. After this call resp->fh needs an fh_put |
| */ |
| static __be32 |
| nfsd_proc_write(struct svc_rqst *rqstp) |
| { |
| struct nfsd_writeargs *argp = rqstp->rq_argp; |
| struct nfsd_attrstat *resp = rqstp->rq_resp; |
| unsigned long cnt = argp->len; |
| unsigned int nvecs; |
| |
| dprintk("nfsd: WRITE %s %u bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, argp->offset); |
| |
| nvecs = svc_fill_write_vector(rqstp, &argp->payload); |
| |
| resp->status = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), |
| argp->offset, rqstp->rq_vec, nvecs, |
| &cnt, NFS_DATA_SYNC, NULL); |
| if (resp->status == nfs_ok) |
| resp->status = fh_getattr(&resp->fh, &resp->stat); |
| else if (resp->status == nfserr_jukebox) |
| return rpc_drop_reply; |
| return rpc_success; |
| } |
| |
| /* |
| * CREATE processing is complicated. The keyword here is `overloaded.' |
| * The parent directory is kept locked between the check for existence |
| * and the actual create() call in compliance with VFS protocols. |
| * N.B. After this call _both_ argp->fh and resp->fh need an fh_put |
| */ |
| static __be32 |
| nfsd_proc_create(struct svc_rqst *rqstp) |
| { |
| struct nfsd_createargs *argp = rqstp->rq_argp; |
| struct nfsd_diropres *resp = rqstp->rq_resp; |
| svc_fh *dirfhp = &argp->fh; |
| svc_fh *newfhp = &resp->fh; |
| struct iattr *attr = &argp->attrs; |
| struct inode *inode; |
| struct dentry *dchild; |
| int type, mode; |
| int hosterr; |
| dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size); |
| |
| dprintk("nfsd: CREATE %s %.*s\n", |
| SVCFH_fmt(dirfhp), argp->len, argp->name); |
| |
| /* First verify the parent file handle */ |
| resp->status = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC); |
| if (resp->status != nfs_ok) |
| goto done; /* must fh_put dirfhp even on error */ |
| |
| /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */ |
| |
| resp->status = nfserr_exist; |
| if (isdotent(argp->name, argp->len)) |
| goto done; |
| hosterr = fh_want_write(dirfhp); |
| if (hosterr) { |
| resp->status = nfserrno(hosterr); |
| goto done; |
| } |
| |
| fh_lock_nested(dirfhp, I_MUTEX_PARENT); |
| dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len); |
| if (IS_ERR(dchild)) { |
| resp->status = nfserrno(PTR_ERR(dchild)); |
| goto out_unlock; |
| } |
| fh_init(newfhp, NFS_FHSIZE); |
| resp->status = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp); |
| if (!resp->status && d_really_is_negative(dchild)) |
| resp->status = nfserr_noent; |
| dput(dchild); |
| if (resp->status) { |
| if (resp->status != nfserr_noent) |
| goto out_unlock; |
| /* |
| * If the new file handle wasn't verified, we can't tell |
| * whether the file exists or not. Time to bail ... |
| */ |
| resp->status = nfserr_acces; |
| if (!newfhp->fh_dentry) { |
| printk(KERN_WARNING |
| "nfsd_proc_create: file handle not verified\n"); |
| goto out_unlock; |
| } |
| } |
| |
| inode = d_inode(newfhp->fh_dentry); |
| |
| /* Unfudge the mode bits */ |
| if (attr->ia_valid & ATTR_MODE) { |
| type = attr->ia_mode & S_IFMT; |
| mode = attr->ia_mode & ~S_IFMT; |
| if (!type) { |
| /* no type, so if target exists, assume same as that, |
| * else assume a file */ |
| if (inode) { |
| type = inode->i_mode & S_IFMT; |
| switch(type) { |
| case S_IFCHR: |
| case S_IFBLK: |
| /* reserve rdev for later checking */ |
| rdev = inode->i_rdev; |
| attr->ia_valid |= ATTR_SIZE; |
| |
| fallthrough; |
| case S_IFIFO: |
| /* this is probably a permission check.. |
| * at least IRIX implements perm checking on |
| * echo thing > device-special-file-or-pipe |
| * by doing a CREATE with type==0 |
| */ |
| resp->status = nfsd_permission(rqstp, |
| newfhp->fh_export, |
| newfhp->fh_dentry, |
| NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS); |
| if (resp->status && resp->status != nfserr_rofs) |
| goto out_unlock; |
| } |
| } else |
| type = S_IFREG; |
| } |
| } else if (inode) { |
| type = inode->i_mode & S_IFMT; |
| mode = inode->i_mode & ~S_IFMT; |
| } else { |
| type = S_IFREG; |
| mode = 0; /* ??? */ |
| } |
| |
| attr->ia_valid |= ATTR_MODE; |
| attr->ia_mode = mode; |
| |
| /* Special treatment for non-regular files according to the |
| * gospel of sun micro |
| */ |
| if (type != S_IFREG) { |
| if (type != S_IFBLK && type != S_IFCHR) { |
| rdev = 0; |
| } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) { |
| /* If you think you've seen the worst, grok this. */ |
| type = S_IFIFO; |
| } else { |
| /* Okay, char or block special */ |
| if (!rdev) |
| rdev = wanted; |
| } |
| |
| /* we've used the SIZE information, so discard it */ |
| attr->ia_valid &= ~ATTR_SIZE; |
| |
| /* Make sure the type and device matches */ |
| resp->status = nfserr_exist; |
| if (inode && inode_wrong_type(inode, type)) |
| goto out_unlock; |
| } |
| |
| resp->status = nfs_ok; |
| if (!inode) { |
| /* File doesn't exist. Create it and set attrs */ |
| resp->status = nfsd_create_locked(rqstp, dirfhp, argp->name, |
| argp->len, attr, type, rdev, |
| newfhp); |
| } else if (type == S_IFREG) { |
| dprintk("nfsd: existing %s, valid=%x, size=%ld\n", |
| argp->name, attr->ia_valid, (long) attr->ia_size); |
| /* File already exists. We ignore all attributes except |
| * size, so that creat() behaves exactly like |
| * open(..., O_CREAT|O_TRUNC|O_WRONLY). |
| */ |
| attr->ia_valid &= ATTR_SIZE; |
| if (attr->ia_valid) |
| resp->status = nfsd_setattr(rqstp, newfhp, attr, 0, |
| (time64_t)0); |
| } |
| |
| out_unlock: |
| /* We don't really need to unlock, as fh_put does it. */ |
| fh_unlock(dirfhp); |
| fh_drop_write(dirfhp); |
| done: |
| fh_put(dirfhp); |
| if (resp->status != nfs_ok) |
| goto out; |
| resp->status = fh_getattr(&resp->fh, &resp->stat); |
| out: |
| return rpc_success; |
| } |
| |
| static __be32 |
| nfsd_proc_remove(struct svc_rqst *rqstp) |
| { |
| struct nfsd_diropargs *argp = rqstp->rq_argp; |
| struct nfsd_stat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh), |
| argp->len, argp->name); |
| |
| /* Unlink. -SIFDIR means file must not be a directory */ |
| resp->status = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, |
| argp->name, argp->len); |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| static __be32 |
| nfsd_proc_rename(struct svc_rqst *rqstp) |
| { |
| struct nfsd_renameargs *argp = rqstp->rq_argp; |
| struct nfsd_stat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: RENAME %s %.*s -> \n", |
| SVCFH_fmt(&argp->ffh), argp->flen, argp->fname); |
| dprintk("nfsd: -> %s %.*s\n", |
| SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname); |
| |
| resp->status = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen, |
| &argp->tfh, argp->tname, argp->tlen); |
| fh_put(&argp->ffh); |
| fh_put(&argp->tfh); |
| return rpc_success; |
| } |
| |
| static __be32 |
| nfsd_proc_link(struct svc_rqst *rqstp) |
| { |
| struct nfsd_linkargs *argp = rqstp->rq_argp; |
| struct nfsd_stat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: LINK %s ->\n", |
| SVCFH_fmt(&argp->ffh)); |
| dprintk("nfsd: %s %.*s\n", |
| SVCFH_fmt(&argp->tfh), |
| argp->tlen, |
| argp->tname); |
| |
| resp->status = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen, |
| &argp->ffh); |
| fh_put(&argp->ffh); |
| fh_put(&argp->tfh); |
| return rpc_success; |
| } |
| |
| static __be32 |
| nfsd_proc_symlink(struct svc_rqst *rqstp) |
| { |
| struct nfsd_symlinkargs *argp = rqstp->rq_argp; |
| struct nfsd_stat *resp = rqstp->rq_resp; |
| struct svc_fh newfh; |
| |
| if (argp->tlen > NFS_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 %s %.*s -> %.*s\n", |
| SVCFH_fmt(&argp->ffh), argp->flen, argp->fname, |
| argp->tlen, argp->tname); |
| |
| fh_init(&newfh, NFS_FHSIZE); |
| resp->status = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen, |
| argp->tname, &newfh); |
| |
| kfree(argp->tname); |
| fh_put(&argp->ffh); |
| fh_put(&newfh); |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * Make directory. This operation is not idempotent. |
| * N.B. After this call resp->fh needs an fh_put |
| */ |
| static __be32 |
| nfsd_proc_mkdir(struct svc_rqst *rqstp) |
| { |
| struct nfsd_createargs *argp = rqstp->rq_argp; |
| struct nfsd_diropres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); |
| |
| if (resp->fh.fh_dentry) { |
| printk(KERN_WARNING |
| "nfsd_proc_mkdir: response already verified??\n"); |
| } |
| |
| argp->attrs.ia_valid &= ~ATTR_SIZE; |
| fh_init(&resp->fh, NFS_FHSIZE); |
| resp->status = nfsd_create(rqstp, &argp->fh, argp->name, argp->len, |
| &argp->attrs, S_IFDIR, 0, &resp->fh); |
| fh_put(&argp->fh); |
| if (resp->status != nfs_ok) |
| goto out; |
| |
| resp->status = fh_getattr(&resp->fh, &resp->stat); |
| out: |
| return rpc_success; |
| } |
| |
| /* |
| * Remove a directory |
| */ |
| static __be32 |
| nfsd_proc_rmdir(struct svc_rqst *rqstp) |
| { |
| struct nfsd_diropargs *argp = rqstp->rq_argp; |
| struct nfsd_stat *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); |
| |
| resp->status = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, |
| argp->name, argp->len); |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp, |
| struct nfsd_readdirres *resp, |
| u32 count) |
| { |
| struct xdr_buf *buf = &resp->dirlist; |
| struct xdr_stream *xdr = &resp->xdr; |
| |
| count = clamp(count, (u32)(XDR_UNIT * 2), svc_max_payload(rqstp)); |
| |
| memset(buf, 0, sizeof(*buf)); |
| |
| /* Reserve room for the NULL ptr & eof flag (-2 words) */ |
| buf->buflen = count - XDR_UNIT * 2; |
| buf->pages = rqstp->rq_next_page; |
| rqstp->rq_next_page++; |
| |
| /* This is xdr_init_encode(), but it assumes that |
| * the head kvec has already been consumed. */ |
| xdr_set_scratch_buffer(xdr, NULL, 0); |
| xdr->buf = buf; |
| xdr->page_ptr = buf->pages; |
| xdr->iov = NULL; |
| xdr->p = page_address(*buf->pages); |
| xdr->end = (void *)xdr->p + min_t(u32, buf->buflen, PAGE_SIZE); |
| xdr->rqst = NULL; |
| } |
| |
| /* |
| * Read a portion of a directory. |
| */ |
| static __be32 |
| nfsd_proc_readdir(struct svc_rqst *rqstp) |
| { |
| struct nfsd_readdirargs *argp = rqstp->rq_argp; |
| struct nfsd_readdirres *resp = rqstp->rq_resp; |
| loff_t offset; |
| |
| dprintk("nfsd: READDIR %s %d bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->count, argp->cookie); |
| |
| nfsd_init_dirlist_pages(rqstp, resp, argp->count); |
| |
| resp->common.err = nfs_ok; |
| resp->cookie_offset = 0; |
| offset = argp->cookie; |
| resp->status = nfsd_readdir(rqstp, &argp->fh, &offset, |
| &resp->common, nfssvc_encode_entry); |
| nfssvc_encode_nfscookie(resp, offset); |
| |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * Get file system info |
| */ |
| static __be32 |
| nfsd_proc_statfs(struct svc_rqst *rqstp) |
| { |
| struct nfsd_fhandle *argp = rqstp->rq_argp; |
| struct nfsd_statfsres *resp = rqstp->rq_resp; |
| |
| dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh)); |
| |
| resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats, |
| NFSD_MAY_BYPASS_GSS_ON_ROOT); |
| fh_put(&argp->fh); |
| return rpc_success; |
| } |
| |
| /* |
| * NFSv2 Server procedures. |
| * Only the results of non-idempotent operations are cached. |
| */ |
| |
| #define ST 1 /* status */ |
| #define FH 8 /* filehandle */ |
| #define AT 18 /* attributes */ |
| |
| static const struct svc_procedure nfsd_procedures2[18] = { |
| [NFSPROC_NULL] = { |
| .pc_func = nfsd_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 = 0, |
| .pc_name = "NULL", |
| }, |
| [NFSPROC_GETATTR] = { |
| .pc_func = nfsd_proc_getattr, |
| .pc_decode = nfssvc_decode_fhandleargs, |
| .pc_encode = nfssvc_encode_attrstatres, |
| .pc_release = nfssvc_release_attrstat, |
| .pc_argsize = sizeof(struct nfsd_fhandle), |
| .pc_ressize = sizeof(struct nfsd_attrstat), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+AT, |
| .pc_name = "GETATTR", |
| }, |
| [NFSPROC_SETATTR] = { |
| .pc_func = nfsd_proc_setattr, |
| .pc_decode = nfssvc_decode_sattrargs, |
| .pc_encode = nfssvc_encode_attrstatres, |
| .pc_release = nfssvc_release_attrstat, |
| .pc_argsize = sizeof(struct nfsd_sattrargs), |
| .pc_ressize = sizeof(struct nfsd_attrstat), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+AT, |
| .pc_name = "SETATTR", |
| }, |
| [NFSPROC_ROOT] = { |
| .pc_func = nfsd_proc_root, |
| .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 = 0, |
| .pc_name = "ROOT", |
| }, |
| [NFSPROC_LOOKUP] = { |
| .pc_func = nfsd_proc_lookup, |
| .pc_decode = nfssvc_decode_diropargs, |
| .pc_encode = nfssvc_encode_diropres, |
| .pc_release = nfssvc_release_diropres, |
| .pc_argsize = sizeof(struct nfsd_diropargs), |
| .pc_ressize = sizeof(struct nfsd_diropres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+FH+AT, |
| .pc_name = "LOOKUP", |
| }, |
| [NFSPROC_READLINK] = { |
| .pc_func = nfsd_proc_readlink, |
| .pc_decode = nfssvc_decode_fhandleargs, |
| .pc_encode = nfssvc_encode_readlinkres, |
| .pc_argsize = sizeof(struct nfsd_fhandle), |
| .pc_ressize = sizeof(struct nfsd_readlinkres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4, |
| .pc_name = "READLINK", |
| }, |
| [NFSPROC_READ] = { |
| .pc_func = nfsd_proc_read, |
| .pc_decode = nfssvc_decode_readargs, |
| .pc_encode = nfssvc_encode_readres, |
| .pc_release = nfssvc_release_readres, |
| .pc_argsize = sizeof(struct nfsd_readargs), |
| .pc_ressize = sizeof(struct nfsd_readres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4, |
| .pc_name = "READ", |
| }, |
| [NFSPROC_WRITECACHE] = { |
| .pc_func = nfsd_proc_writecache, |
| .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 = 0, |
| .pc_name = "WRITECACHE", |
| }, |
| [NFSPROC_WRITE] = { |
| .pc_func = nfsd_proc_write, |
| .pc_decode = nfssvc_decode_writeargs, |
| .pc_encode = nfssvc_encode_attrstatres, |
| .pc_release = nfssvc_release_attrstat, |
| .pc_argsize = sizeof(struct nfsd_writeargs), |
| .pc_ressize = sizeof(struct nfsd_attrstat), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+AT, |
| .pc_name = "WRITE", |
| }, |
| [NFSPROC_CREATE] = { |
| .pc_func = nfsd_proc_create, |
| .pc_decode = nfssvc_decode_createargs, |
| .pc_encode = nfssvc_encode_diropres, |
| .pc_release = nfssvc_release_diropres, |
| .pc_argsize = sizeof(struct nfsd_createargs), |
| .pc_ressize = sizeof(struct nfsd_diropres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+FH+AT, |
| .pc_name = "CREATE", |
| }, |
| [NFSPROC_REMOVE] = { |
| .pc_func = nfsd_proc_remove, |
| .pc_decode = nfssvc_decode_diropargs, |
| .pc_encode = nfssvc_encode_statres, |
| .pc_argsize = sizeof(struct nfsd_diropargs), |
| .pc_ressize = sizeof(struct nfsd_stat), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| .pc_name = "REMOVE", |
| }, |
| [NFSPROC_RENAME] = { |
| .pc_func = nfsd_proc_rename, |
| .pc_decode = nfssvc_decode_renameargs, |
| .pc_encode = nfssvc_encode_statres, |
| .pc_argsize = sizeof(struct nfsd_renameargs), |
| .pc_ressize = sizeof(struct nfsd_stat), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| .pc_name = "RENAME", |
| }, |
| [NFSPROC_LINK] = { |
| .pc_func = nfsd_proc_link, |
| .pc_decode = nfssvc_decode_linkargs, |
| .pc_encode = nfssvc_encode_statres, |
| .pc_argsize = sizeof(struct nfsd_linkargs), |
| .pc_ressize = sizeof(struct nfsd_stat), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| .pc_name = "LINK", |
| }, |
| [NFSPROC_SYMLINK] = { |
| .pc_func = nfsd_proc_symlink, |
| .pc_decode = nfssvc_decode_symlinkargs, |
| .pc_encode = nfssvc_encode_statres, |
| .pc_argsize = sizeof(struct nfsd_symlinkargs), |
| .pc_ressize = sizeof(struct nfsd_stat), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| .pc_name = "SYMLINK", |
| }, |
| [NFSPROC_MKDIR] = { |
| .pc_func = nfsd_proc_mkdir, |
| .pc_decode = nfssvc_decode_createargs, |
| .pc_encode = nfssvc_encode_diropres, |
| .pc_release = nfssvc_release_diropres, |
| .pc_argsize = sizeof(struct nfsd_createargs), |
| .pc_ressize = sizeof(struct nfsd_diropres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+FH+AT, |
| .pc_name = "MKDIR", |
| }, |
| [NFSPROC_RMDIR] = { |
| .pc_func = nfsd_proc_rmdir, |
| .pc_decode = nfssvc_decode_diropargs, |
| .pc_encode = nfssvc_encode_statres, |
| .pc_argsize = sizeof(struct nfsd_diropargs), |
| .pc_ressize = sizeof(struct nfsd_stat), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| .pc_name = "RMDIR", |
| }, |
| [NFSPROC_READDIR] = { |
| .pc_func = nfsd_proc_readdir, |
| .pc_decode = nfssvc_decode_readdirargs, |
| .pc_encode = nfssvc_encode_readdirres, |
| .pc_argsize = sizeof(struct nfsd_readdirargs), |
| .pc_ressize = sizeof(struct nfsd_readdirres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_name = "READDIR", |
| }, |
| [NFSPROC_STATFS] = { |
| .pc_func = nfsd_proc_statfs, |
| .pc_decode = nfssvc_decode_fhandleargs, |
| .pc_encode = nfssvc_encode_statfsres, |
| .pc_argsize = sizeof(struct nfsd_fhandle), |
| .pc_ressize = sizeof(struct nfsd_statfsres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+5, |
| .pc_name = "STATFS", |
| }, |
| }; |
| |
| |
| static unsigned int nfsd_count2[ARRAY_SIZE(nfsd_procedures2)]; |
| const struct svc_version nfsd_version2 = { |
| .vs_vers = 2, |
| .vs_nproc = 18, |
| .vs_proc = nfsd_procedures2, |
| .vs_count = nfsd_count2, |
| .vs_dispatch = nfsd_dispatch, |
| .vs_xdrsize = NFS2_SVC_XDRSIZE, |
| }; |
| |
| /* |
| * Map errnos to NFS errnos. |
| */ |
| __be32 |
| nfserrno (int errno) |
| { |
| static struct { |
| __be32 nfserr; |
| int syserr; |
| } nfs_errtbl[] = { |
| { nfs_ok, 0 }, |
| { nfserr_perm, -EPERM }, |
| { nfserr_noent, -ENOENT }, |
| { nfserr_io, -EIO }, |
| { nfserr_nxio, -ENXIO }, |
| { nfserr_fbig, -E2BIG }, |
| { nfserr_stale, -EBADF }, |
| { nfserr_acces, -EACCES }, |
| { nfserr_exist, -EEXIST }, |
| { nfserr_xdev, -EXDEV }, |
| { nfserr_mlink, -EMLINK }, |
| { nfserr_nodev, -ENODEV }, |
| { nfserr_notdir, -ENOTDIR }, |
| { nfserr_isdir, -EISDIR }, |
| { nfserr_inval, -EINVAL }, |
| { nfserr_fbig, -EFBIG }, |
| { nfserr_nospc, -ENOSPC }, |
| { nfserr_rofs, -EROFS }, |
| { nfserr_mlink, -EMLINK }, |
| { nfserr_nametoolong, -ENAMETOOLONG }, |
| { nfserr_notempty, -ENOTEMPTY }, |
| #ifdef EDQUOT |
| { nfserr_dquot, -EDQUOT }, |
| #endif |
| { nfserr_stale, -ESTALE }, |
| { nfserr_jukebox, -ETIMEDOUT }, |
| { nfserr_jukebox, -ERESTARTSYS }, |
| { nfserr_jukebox, -EAGAIN }, |
| { nfserr_jukebox, -EWOULDBLOCK }, |
| { nfserr_jukebox, -ENOMEM }, |
| { nfserr_io, -ETXTBSY }, |
| { nfserr_notsupp, -EOPNOTSUPP }, |
| { nfserr_toosmall, -ETOOSMALL }, |
| { nfserr_serverfault, -ESERVERFAULT }, |
| { nfserr_serverfault, -ENFILE }, |
| { nfserr_io, -EREMOTEIO }, |
| { nfserr_stale, -EOPENSTALE }, |
| { nfserr_io, -EUCLEAN }, |
| { nfserr_perm, -ENOKEY }, |
| { nfserr_no_grace, -ENOGRACE}, |
| }; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) { |
| if (nfs_errtbl[i].syserr == errno) |
| return nfs_errtbl[i].nfserr; |
| } |
| WARN_ONCE(1, "nfsd: non-standard errno: %d\n", errno); |
| return nfserr_io; |
| } |
| |