| /* |
| * nfsproc2.c Process version 2 NFS requests. |
| * linux/fs/nfsd/nfs2proc.c |
| * |
| * 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" |
| |
| typedef struct svc_rqst svc_rqst; |
| typedef struct svc_buf svc_buf; |
| |
| #define NFSDDBG_FACILITY NFSDDBG_PROC |
| |
| |
| static __be32 |
| nfsd_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
| { |
| return nfs_ok; |
| } |
| |
| static __be32 |
| nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp) |
| { |
| if (err) return err; |
| return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
| resp->fh.fh_dentry, |
| &resp->stat)); |
| } |
| static __be32 |
| nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp) |
| { |
| if (err) return err; |
| return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
| resp->fh.fh_dentry, |
| &resp->stat)); |
| } |
| /* |
| * 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, |
| struct nfsd_attrstat *resp) |
| { |
| __be32 nfserr; |
| dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh)); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| nfserr = fh_verify(rqstp, &resp->fh, 0, |
| NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT); |
| return nfsd_return_attrs(nfserr, resp); |
| } |
| |
| /* |
| * 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, |
| struct nfsd_attrstat *resp) |
| { |
| __be32 nfserr; |
| dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", |
| SVCFH_fmt(&argp->fh), |
| argp->attrs.ia_valid, (long) argp->attrs.ia_size); |
| |
| fh_copy(&resp->fh, &argp->fh); |
| nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0); |
| return nfsd_return_attrs(nfserr, resp); |
| } |
| |
| /* |
| * 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, |
| struct nfsd_diropres *resp) |
| { |
| __be32 nfserr; |
| |
| dprintk("nfsd: LOOKUP %s %.*s\n", |
| SVCFH_fmt(&argp->fh), argp->len, argp->name); |
| |
| fh_init(&resp->fh, NFS_FHSIZE); |
| nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len, |
| &resp->fh); |
| |
| fh_put(&argp->fh); |
| return nfsd_return_dirop(nfserr, resp); |
| } |
| |
| /* |
| * Read a symlink. |
| */ |
| static __be32 |
| nfsd_proc_readlink(struct svc_rqst *rqstp, struct nfsd_readlinkargs *argp, |
| struct nfsd_readlinkres *resp) |
| { |
| __be32 nfserr; |
| |
| dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh)); |
| |
| /* Read the symlink. */ |
| resp->len = NFS_MAXPATHLEN; |
| nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len); |
| |
| fh_put(&argp->fh); |
| return nfserr; |
| } |
| |
| /* |
| * 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, |
| struct nfsd_readres *resp) |
| { |
| __be32 nfserr; |
| |
| dprintk("nfsd: READ %s %d bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->count, argp->offset); |
| |
| /* Obtain buffer pointer for payload. 19 is 1 word for |
| * status, 17 words for fattr, and 1 word for the byte count. |
| */ |
| |
| if (NFSSVC_MAXBLKSIZE_V2 < argp->count) { |
| char buf[RPC_MAX_ADDRBUFLEN]; |
| printk(KERN_NOTICE |
| "oversized read request from %s (%d bytes)\n", |
| svc_print_addr(rqstp, buf, sizeof(buf)), |
| argp->count); |
| argp->count = NFSSVC_MAXBLKSIZE_V2; |
| } |
| svc_reserve_auth(rqstp, (19<<2) + argp->count + 4); |
| |
| resp->count = argp->count; |
| nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, |
| argp->offset, |
| rqstp->rq_vec, argp->vlen, |
| &resp->count); |
| |
| if (nfserr) return nfserr; |
| return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt, |
| resp->fh.fh_dentry, |
| &resp->stat)); |
| } |
| |
| /* |
| * 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, |
| struct nfsd_attrstat *resp) |
| { |
| __be32 nfserr; |
| int stable = 1; |
| unsigned long cnt = argp->len; |
| |
| dprintk("nfsd: WRITE %s %d bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->len, argp->offset); |
| |
| nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL, |
| argp->offset, |
| rqstp->rq_vec, argp->vlen, |
| &cnt, |
| &stable); |
| return nfsd_return_attrs(nfserr, resp); |
| } |
| |
| /* |
| * 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, |
| struct nfsd_diropres *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; |
| __be32 nfserr; |
| 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 */ |
| nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC); |
| if (nfserr) |
| goto done; /* must fh_put dirfhp even on error */ |
| |
| /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */ |
| |
| nfserr = nfserr_acces; |
| if (!argp->len) |
| goto done; |
| nfserr = nfserr_exist; |
| if (isdotent(argp->name, argp->len)) |
| goto done; |
| fh_lock_nested(dirfhp, I_MUTEX_PARENT); |
| dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len); |
| if (IS_ERR(dchild)) { |
| nfserr = nfserrno(PTR_ERR(dchild)); |
| goto out_unlock; |
| } |
| fh_init(newfhp, NFS_FHSIZE); |
| nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp); |
| if (!nfserr && !dchild->d_inode) |
| nfserr = nfserr_noent; |
| dput(dchild); |
| if (nfserr) { |
| if (nfserr != 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 ... |
| */ |
| nfserr = nfserr_acces; |
| if (!newfhp->fh_dentry) { |
| printk(KERN_WARNING |
| "nfsd_proc_create: file handle not verified\n"); |
| goto out_unlock; |
| } |
| } |
| |
| inode = newfhp->fh_dentry->d_inode; |
| |
| /* 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 |
| */ |
| nfserr = nfsd_permission(rqstp, |
| newfhp->fh_export, |
| newfhp->fh_dentry, |
| NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS); |
| if (nfserr && nfserr != 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) { |
| int is_borc = 0; |
| 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 */ |
| is_borc = 1; |
| 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 */ |
| nfserr = nfserr_exist; |
| if (inode && type != (inode->i_mode & S_IFMT)) |
| goto out_unlock; |
| } |
| |
| nfserr = 0; |
| if (!inode) { |
| /* File doesn't exist. Create it and set attrs */ |
| nfserr = nfsd_create(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) |
| nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0); |
| } |
| |
| out_unlock: |
| /* We don't really need to unlock, as fh_put does it. */ |
| fh_unlock(dirfhp); |
| |
| done: |
| fh_put(dirfhp); |
| return nfsd_return_dirop(nfserr, resp); |
| } |
| |
| static __be32 |
| nfsd_proc_remove(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, |
| void *resp) |
| { |
| __be32 nfserr; |
| |
| dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh), |
| argp->len, argp->name); |
| |
| /* Unlink. -SIFDIR means file must not be a directory */ |
| nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len); |
| fh_put(&argp->fh); |
| return nfserr; |
| } |
| |
| static __be32 |
| nfsd_proc_rename(struct svc_rqst *rqstp, struct nfsd_renameargs *argp, |
| void *resp) |
| { |
| __be32 nfserr; |
| |
| 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); |
| |
| nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen, |
| &argp->tfh, argp->tname, argp->tlen); |
| fh_put(&argp->ffh); |
| fh_put(&argp->tfh); |
| return nfserr; |
| } |
| |
| static __be32 |
| nfsd_proc_link(struct svc_rqst *rqstp, struct nfsd_linkargs *argp, |
| void *resp) |
| { |
| __be32 nfserr; |
| |
| dprintk("nfsd: LINK %s ->\n", |
| SVCFH_fmt(&argp->ffh)); |
| dprintk("nfsd: %s %.*s\n", |
| SVCFH_fmt(&argp->tfh), |
| argp->tlen, |
| argp->tname); |
| |
| nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen, |
| &argp->ffh); |
| fh_put(&argp->ffh); |
| fh_put(&argp->tfh); |
| return nfserr; |
| } |
| |
| static __be32 |
| nfsd_proc_symlink(struct svc_rqst *rqstp, struct nfsd_symlinkargs *argp, |
| void *resp) |
| { |
| struct svc_fh newfh; |
| __be32 nfserr; |
| |
| dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n", |
| SVCFH_fmt(&argp->ffh), argp->flen, argp->fname, |
| argp->tlen, argp->tname); |
| |
| fh_init(&newfh, NFS_FHSIZE); |
| /* |
| * Create the link, look up new file and set attrs. |
| */ |
| nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen, |
| argp->tname, argp->tlen, |
| &newfh, &argp->attrs); |
| |
| |
| fh_put(&argp->ffh); |
| fh_put(&newfh); |
| return nfserr; |
| } |
| |
| /* |
| * 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, |
| struct nfsd_diropres *resp) |
| { |
| __be32 nfserr; |
| |
| 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); |
| nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len, |
| &argp->attrs, S_IFDIR, 0, &resp->fh); |
| fh_put(&argp->fh); |
| return nfsd_return_dirop(nfserr, resp); |
| } |
| |
| /* |
| * Remove a directory |
| */ |
| static __be32 |
| nfsd_proc_rmdir(struct svc_rqst *rqstp, struct nfsd_diropargs *argp, |
| void *resp) |
| { |
| __be32 nfserr; |
| |
| dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name); |
| |
| nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len); |
| fh_put(&argp->fh); |
| return nfserr; |
| } |
| |
| /* |
| * Read a portion of a directory. |
| */ |
| static __be32 |
| nfsd_proc_readdir(struct svc_rqst *rqstp, struct nfsd_readdirargs *argp, |
| struct nfsd_readdirres *resp) |
| { |
| int count; |
| __be32 nfserr; |
| loff_t offset; |
| |
| dprintk("nfsd: READDIR %s %d bytes at %d\n", |
| SVCFH_fmt(&argp->fh), |
| argp->count, argp->cookie); |
| |
| /* Shrink to the client read size */ |
| count = (argp->count >> 2) - 2; |
| |
| /* Make sure we've room for the NULL ptr & eof flag */ |
| count -= 2; |
| if (count < 0) |
| count = 0; |
| |
| resp->buffer = argp->buffer; |
| resp->offset = NULL; |
| resp->buflen = count; |
| resp->common.err = nfs_ok; |
| /* Read directory and encode entries on the fly */ |
| offset = argp->cookie; |
| nfserr = nfsd_readdir(rqstp, &argp->fh, &offset, |
| &resp->common, nfssvc_encode_entry); |
| |
| resp->count = resp->buffer - argp->buffer; |
| if (resp->offset) |
| *resp->offset = htonl(offset); |
| |
| fh_put(&argp->fh); |
| return nfserr; |
| } |
| |
| /* |
| * Get file system info |
| */ |
| static __be32 |
| nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp, |
| struct nfsd_statfsres *resp) |
| { |
| __be32 nfserr; |
| |
| dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh)); |
| |
| nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, |
| NFSD_MAY_BYPASS_GSS_ON_ROOT); |
| fh_put(&argp->fh); |
| return nfserr; |
| } |
| |
| /* |
| * NFSv2 Server procedures. |
| * Only the results of non-idempotent operations are cached. |
| */ |
| struct nfsd_void { int dummy; }; |
| |
| #define ST 1 /* status */ |
| #define FH 8 /* filehandle */ |
| #define AT 18 /* attributes */ |
| |
| static struct svc_procedure nfsd_procedures2[18] = { |
| [NFSPROC_NULL] = { |
| .pc_func = (svc_procfunc) nfsd_proc_null, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_void, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_void), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_GETATTR] = { |
| .pc_func = (svc_procfunc) nfsd_proc_getattr, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, |
| .pc_release = (kxdrproc_t) nfssvc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd_fhandle), |
| .pc_ressize = sizeof(struct nfsd_attrstat), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+AT, |
| }, |
| [NFSPROC_SETATTR] = { |
| .pc_func = (svc_procfunc) nfsd_proc_setattr, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, |
| .pc_release = (kxdrproc_t) nfssvc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd_sattrargs), |
| .pc_ressize = sizeof(struct nfsd_attrstat), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+AT, |
| }, |
| [NFSPROC_ROOT] = { |
| .pc_decode = (kxdrproc_t) nfssvc_decode_void, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_void), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_LOOKUP] = { |
| .pc_func = (svc_procfunc) nfsd_proc_lookup, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, |
| .pc_release = (kxdrproc_t) nfssvc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd_diropargs), |
| .pc_ressize = sizeof(struct nfsd_diropres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+FH+AT, |
| }, |
| [NFSPROC_READLINK] = { |
| .pc_func = (svc_procfunc) nfsd_proc_readlink, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres, |
| .pc_argsize = sizeof(struct nfsd_readlinkargs), |
| .pc_ressize = sizeof(struct nfsd_readlinkres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4, |
| }, |
| [NFSPROC_READ] = { |
| .pc_func = (svc_procfunc) nfsd_proc_read, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_readargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_readres, |
| .pc_release = (kxdrproc_t) nfssvc_release_fhandle, |
| .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, |
| }, |
| [NFSPROC_WRITECACHE] = { |
| .pc_decode = (kxdrproc_t) nfssvc_decode_void, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_void), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_WRITE] = { |
| .pc_func = (svc_procfunc) nfsd_proc_write, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_writeargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat, |
| .pc_release = (kxdrproc_t) nfssvc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd_writeargs), |
| .pc_ressize = sizeof(struct nfsd_attrstat), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+AT, |
| }, |
| [NFSPROC_CREATE] = { |
| .pc_func = (svc_procfunc) nfsd_proc_create, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_createargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, |
| .pc_release = (kxdrproc_t) nfssvc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd_createargs), |
| .pc_ressize = sizeof(struct nfsd_diropres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+FH+AT, |
| }, |
| [NFSPROC_REMOVE] = { |
| .pc_func = (svc_procfunc) nfsd_proc_remove, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_diropargs), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_RENAME] = { |
| .pc_func = (svc_procfunc) nfsd_proc_rename, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_renameargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_renameargs), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_LINK] = { |
| .pc_func = (svc_procfunc) nfsd_proc_link, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_linkargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_linkargs), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_SYMLINK] = { |
| .pc_func = (svc_procfunc) nfsd_proc_symlink, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_symlinkargs), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_MKDIR] = { |
| .pc_func = (svc_procfunc) nfsd_proc_mkdir, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_createargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_diropres, |
| .pc_release = (kxdrproc_t) nfssvc_release_fhandle, |
| .pc_argsize = sizeof(struct nfsd_createargs), |
| .pc_ressize = sizeof(struct nfsd_diropres), |
| .pc_cachetype = RC_REPLBUFF, |
| .pc_xdrressize = ST+FH+AT, |
| }, |
| [NFSPROC_RMDIR] = { |
| .pc_func = (svc_procfunc) nfsd_proc_rmdir, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_void, |
| .pc_argsize = sizeof(struct nfsd_diropargs), |
| .pc_ressize = sizeof(struct nfsd_void), |
| .pc_cachetype = RC_REPLSTAT, |
| .pc_xdrressize = ST, |
| }, |
| [NFSPROC_READDIR] = { |
| .pc_func = (svc_procfunc) nfsd_proc_readdir, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_readdirres, |
| .pc_argsize = sizeof(struct nfsd_readdirargs), |
| .pc_ressize = sizeof(struct nfsd_readdirres), |
| .pc_cachetype = RC_NOCACHE, |
| }, |
| [NFSPROC_STATFS] = { |
| .pc_func = (svc_procfunc) nfsd_proc_statfs, |
| .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle, |
| .pc_encode = (kxdrproc_t) nfssvc_encode_statfsres, |
| .pc_argsize = sizeof(struct nfsd_fhandle), |
| .pc_ressize = sizeof(struct nfsd_statfsres), |
| .pc_cachetype = RC_NOCACHE, |
| .pc_xdrressize = ST+5, |
| }, |
| }; |
| |
| |
| struct svc_version nfsd_version2 = { |
| .vs_vers = 2, |
| .vs_nproc = 18, |
| .vs_proc = nfsd_procedures2, |
| .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_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_dropit, -EAGAIN }, |
| { nfserr_dropit, -ENOMEM }, |
| { nfserr_badname, -ESRCH }, |
| { nfserr_io, -ETXTBSY }, |
| { nfserr_notsupp, -EOPNOTSUPP }, |
| { nfserr_toosmall, -ETOOSMALL }, |
| { nfserr_serverfault, -ESERVERFAULT }, |
| }; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) { |
| if (nfs_errtbl[i].syserr == errno) |
| return nfs_errtbl[i].nfserr; |
| } |
| printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno); |
| return nfserr_io; |
| } |
| |