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7668336c8e
only happen on every Nth call. Update the existing twiddle() calls done in various IO loops to roughly reflect the relative IO sizes. That is, tftp and nfs call twiddle() on every 1K block, ufs on every filesystem block, so the network calls now use a much larger divisor than disk IO calls. Also add a new twiddle_divisor() function that allows an application to set a global divisor that is applied on top of the per-call divisors. Nothing calls this yet, but loader(8) will be using it to further throttle the cursor for slow serial consoles.
1475 lines
30 KiB
C
1475 lines
30 KiB
C
/* $NetBSD: nfs.c,v 1.2 1998/01/24 12:43:09 drochner Exp $ */
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/*-
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* Copyright (c) 1993 John Brezak
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include "rpcv2.h"
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#include "nfsv2.h"
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#include "stand.h"
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#include "net.h"
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#include "netif.h"
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#include "rpc.h"
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#define NFS_DEBUGxx
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#define NFSREAD_SIZE 1024
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/* Define our own NFS attributes without NQNFS stuff. */
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#ifdef OLD_NFSV2
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struct nfsv2_fattrs {
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n_long fa_type;
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n_long fa_mode;
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n_long fa_nlink;
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n_long fa_uid;
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n_long fa_gid;
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n_long fa_size;
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n_long fa_blocksize;
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n_long fa_rdev;
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n_long fa_blocks;
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n_long fa_fsid;
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n_long fa_fileid;
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struct nfsv2_time fa_atime;
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struct nfsv2_time fa_mtime;
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struct nfsv2_time fa_ctime;
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};
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struct nfs_read_args {
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u_char fh[NFS_FHSIZE];
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n_long off;
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n_long len;
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n_long xxx; /* XXX what's this for? */
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};
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/* Data part of nfs rpc reply (also the largest thing we receive) */
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struct nfs_read_repl {
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n_long errno;
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struct nfsv2_fattrs fa;
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n_long count;
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u_char data[NFSREAD_SIZE];
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};
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#ifndef NFS_NOSYMLINK
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struct nfs_readlnk_repl {
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n_long errno;
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n_long len;
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char path[NFS_MAXPATHLEN];
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};
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#endif
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struct nfs_readdir_args {
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u_char fh[NFS_FHSIZE];
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n_long cookie;
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n_long count;
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};
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struct nfs_readdir_data {
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n_long fileid;
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n_long len;
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char name[0];
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};
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struct nfs_readdir_off {
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n_long cookie;
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n_long follows;
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};
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struct nfs_iodesc {
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struct iodesc *iodesc;
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off_t off;
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u_char fh[NFS_FHSIZE];
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struct nfsv2_fattrs fa; /* all in network order */
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};
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#else /* !OLD_NFSV2 */
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/* NFSv3 definitions */
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#define NFS_V3MAXFHSIZE 64
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#define NFS_VER3 3
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#define RPCMNT_VER3 3
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#define NFSPROCV3_LOOKUP 3
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#define NFSPROCV3_READLINK 5
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#define NFSPROCV3_READ 6
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#define NFSPROCV3_READDIR 16
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typedef struct {
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uint32_t val[2];
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} n_quad;
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struct nfsv3_time {
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uint32_t nfs_sec;
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uint32_t nfs_nsec;
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};
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struct nfsv3_fattrs {
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uint32_t fa_type;
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uint32_t fa_mode;
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uint32_t fa_nlink;
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uint32_t fa_uid;
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uint32_t fa_gid;
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n_quad fa_size;
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n_quad fa_used;
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n_quad fa_rdev;
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n_quad fa_fsid;
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n_quad fa_fileid;
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struct nfsv3_time fa_atime;
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struct nfsv3_time fa_mtime;
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struct nfsv3_time fa_ctime;
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};
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/*
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* For NFSv3, the file handle is variable in size, so most fixed sized
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* structures for arguments won't work. For most cases, a structure
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* that starts with any fixed size section is followed by an array
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* that covers the maximum size required.
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*/
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struct nfsv3_readdir_repl {
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uint32_t errno;
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uint32_t ok;
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struct nfsv3_fattrs fa;
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uint32_t cookiev0;
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uint32_t cookiev1;
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};
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struct nfsv3_readdir_entry {
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uint32_t follows;
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uint32_t fid0;
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uint32_t fid1;
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uint32_t len;
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uint32_t nameplus[0];
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};
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struct nfs_iodesc {
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struct iodesc *iodesc;
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off_t off;
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uint32_t fhsize;
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u_char fh[NFS_V3MAXFHSIZE];
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struct nfsv3_fattrs fa; /* all in network order */
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uint64_t cookie;
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};
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#endif /* OLD_NFSV2 */
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/*
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* XXX interactions with tftp? See nfswrapper.c for a confusing
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* issue.
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*/
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int nfs_open(const char *path, struct open_file *f);
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static int nfs_close(struct open_file *f);
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static int nfs_read(struct open_file *f, void *buf, size_t size, size_t *resid);
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static int nfs_write(struct open_file *f, void *buf, size_t size, size_t *resid);
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static off_t nfs_seek(struct open_file *f, off_t offset, int where);
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static int nfs_stat(struct open_file *f, struct stat *sb);
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static int nfs_readdir(struct open_file *f, struct dirent *d);
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struct nfs_iodesc nfs_root_node;
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struct fs_ops nfs_fsops = {
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"nfs",
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nfs_open,
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nfs_close,
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nfs_read,
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nfs_write,
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nfs_seek,
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nfs_stat,
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nfs_readdir
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};
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#ifdef OLD_NFSV2
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/*
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* Fetch the root file handle (call mount daemon)
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* Return zero or error number.
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*/
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int
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nfs_getrootfh(struct iodesc *d, char *path, u_char *fhp)
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{
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int len;
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struct args {
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n_long len;
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char path[FNAME_SIZE];
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} *args;
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struct repl {
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n_long errno;
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u_char fh[NFS_FHSIZE];
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} *repl;
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struct {
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n_long h[RPC_HEADER_WORDS];
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struct args d;
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} sdata;
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struct {
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n_long h[RPC_HEADER_WORDS];
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struct repl d;
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} rdata;
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size_t cc;
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#ifdef NFS_DEBUG
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if (debug)
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printf("nfs_getrootfh: %s\n", path);
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#endif
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args = &sdata.d;
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repl = &rdata.d;
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bzero(args, sizeof(*args));
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len = strlen(path);
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if (len > sizeof(args->path))
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len = sizeof(args->path);
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args->len = htonl(len);
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bcopy(path, args->path, len);
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len = 4 + roundup(len, 4);
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cc = rpc_call(d, RPCPROG_MNT, RPCMNT_VER1, RPCMNT_MOUNT,
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args, len, repl, sizeof(*repl));
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if (cc == -1) {
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/* errno was set by rpc_call */
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return (errno);
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}
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if (cc < 4)
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return (EBADRPC);
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if (repl->errno)
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return (ntohl(repl->errno));
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bcopy(repl->fh, fhp, sizeof(repl->fh));
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return (0);
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}
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/*
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* Lookup a file. Store handle and attributes.
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* Return zero or error number.
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*/
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int
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nfs_lookupfh(struct nfs_iodesc *d, const char *name, struct nfs_iodesc *newfd)
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{
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int len, rlen;
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struct args {
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u_char fh[NFS_FHSIZE];
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n_long len;
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char name[FNAME_SIZE];
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} *args;
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struct repl {
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n_long errno;
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u_char fh[NFS_FHSIZE];
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struct nfsv2_fattrs fa;
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} *repl;
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struct {
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n_long h[RPC_HEADER_WORDS];
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struct args d;
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} sdata;
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struct {
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n_long h[RPC_HEADER_WORDS];
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struct repl d;
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} rdata;
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ssize_t cc;
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#ifdef NFS_DEBUG
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if (debug)
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printf("lookupfh: called\n");
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#endif
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args = &sdata.d;
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repl = &rdata.d;
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bzero(args, sizeof(*args));
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bcopy(d->fh, args->fh, sizeof(args->fh));
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len = strlen(name);
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if (len > sizeof(args->name))
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len = sizeof(args->name);
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bcopy(name, args->name, len);
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args->len = htonl(len);
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len = 4 + roundup(len, 4);
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len += NFS_FHSIZE;
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rlen = sizeof(*repl);
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cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER2, NFSPROC_LOOKUP,
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args, len, repl, rlen);
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if (cc == -1)
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return (errno); /* XXX - from rpc_call */
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if (cc < 4)
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return (EIO);
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if (repl->errno) {
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/* saerrno.h now matches NFS error numbers. */
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return (ntohl(repl->errno));
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}
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bcopy( repl->fh, &newfd->fh, sizeof(newfd->fh));
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bcopy(&repl->fa, &newfd->fa, sizeof(newfd->fa));
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return (0);
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}
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#ifndef NFS_NOSYMLINK
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/*
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* Get the destination of a symbolic link.
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*/
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int
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nfs_readlink(struct nfs_iodesc *d, char *buf)
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{
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struct {
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n_long h[RPC_HEADER_WORDS];
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u_char fh[NFS_FHSIZE];
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} sdata;
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struct {
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n_long h[RPC_HEADER_WORDS];
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struct nfs_readlnk_repl d;
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} rdata;
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ssize_t cc;
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#ifdef NFS_DEBUG
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if (debug)
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printf("readlink: called\n");
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#endif
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bcopy(d->fh, sdata.fh, NFS_FHSIZE);
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cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER2, NFSPROC_READLINK,
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sdata.fh, NFS_FHSIZE,
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&rdata.d, sizeof(rdata.d));
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if (cc == -1)
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return (errno);
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if (cc < 4)
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return (EIO);
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if (rdata.d.errno)
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return (ntohl(rdata.d.errno));
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rdata.d.len = ntohl(rdata.d.len);
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if (rdata.d.len > NFS_MAXPATHLEN)
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return (ENAMETOOLONG);
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bcopy(rdata.d.path, buf, rdata.d.len);
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buf[rdata.d.len] = 0;
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return (0);
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}
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#endif
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/*
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* Read data from a file.
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* Return transfer count or -1 (and set errno)
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*/
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ssize_t
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nfs_readdata(struct nfs_iodesc *d, off_t off, void *addr, size_t len)
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{
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struct nfs_read_args *args;
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struct nfs_read_repl *repl;
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struct {
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n_long h[RPC_HEADER_WORDS];
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struct nfs_read_args d;
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} sdata;
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struct {
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n_long h[RPC_HEADER_WORDS];
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struct nfs_read_repl d;
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} rdata;
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size_t cc;
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long x;
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int hlen, rlen;
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args = &sdata.d;
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repl = &rdata.d;
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bcopy(d->fh, args->fh, NFS_FHSIZE);
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args->off = htonl((n_long)off);
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if (len > NFSREAD_SIZE)
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len = NFSREAD_SIZE;
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args->len = htonl((n_long)len);
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args->xxx = htonl((n_long)0);
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hlen = sizeof(*repl) - NFSREAD_SIZE;
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cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER2, NFSPROC_READ,
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args, sizeof(*args),
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repl, sizeof(*repl));
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if (cc == -1) {
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/* errno was already set by rpc_call */
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return (-1);
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}
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if (cc < hlen) {
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errno = EBADRPC;
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return (-1);
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}
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if (repl->errno) {
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errno = ntohl(repl->errno);
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return (-1);
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}
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rlen = cc - hlen;
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x = ntohl(repl->count);
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if (rlen < x) {
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printf("nfsread: short packet, %d < %ld\n", rlen, x);
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errno = EBADRPC;
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return(-1);
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}
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bcopy(repl->data, addr, x);
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return (x);
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}
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|
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/*
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* Open a file.
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* return zero or error number
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*/
|
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int
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nfs_open(const char *upath, struct open_file *f)
|
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{
|
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struct iodesc *desc;
|
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struct nfs_iodesc *currfd;
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char buf[2 * NFS_FHSIZE + 3];
|
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u_char *fh;
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char *cp;
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int i;
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#ifndef NFS_NOSYMLINK
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struct nfs_iodesc *newfd;
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struct nfsv2_fattrs *fa;
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char *ncp;
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int c;
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char namebuf[NFS_MAXPATHLEN + 1];
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char linkbuf[NFS_MAXPATHLEN + 1];
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int nlinks = 0;
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#endif
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int error;
|
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char *path;
|
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|
|
#ifdef NFS_DEBUG
|
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if (debug)
|
|
printf("nfs_open: %s (rootpath=%s)\n", upath, rootpath);
|
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#endif
|
|
if (!rootpath[0]) {
|
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printf("no rootpath, no nfs\n");
|
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return (ENXIO);
|
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}
|
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|
|
/*
|
|
* This is silly - we should look at dv_type but that value is
|
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* arch dependant and we can't use it here.
|
|
*/
|
|
#ifndef __i386__
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if (strcmp(f->f_dev->dv_name, "net") != 0)
|
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return(EINVAL);
|
|
#else
|
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if (strcmp(f->f_dev->dv_name, "pxe") != 0)
|
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return(EINVAL);
|
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#endif
|
|
|
|
if (!(desc = socktodesc(*(int *)(f->f_devdata))))
|
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return(EINVAL);
|
|
|
|
/* Bind to a reserved port. */
|
|
desc->myport = htons(--rpc_port);
|
|
desc->destip = rootip;
|
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if ((error = nfs_getrootfh(desc, rootpath, nfs_root_node.fh)))
|
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return (error);
|
|
nfs_root_node.fa.fa_type = htonl(NFDIR);
|
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nfs_root_node.fa.fa_mode = htonl(0755);
|
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nfs_root_node.fa.fa_nlink = htonl(2);
|
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nfs_root_node.iodesc = desc;
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|
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fh = &nfs_root_node.fh[0];
|
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buf[0] = 'X';
|
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cp = &buf[1];
|
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for (i = 0; i < NFS_FHSIZE; i++, cp += 2)
|
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sprintf(cp, "%02x", fh[i]);
|
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sprintf(cp, "X");
|
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setenv("boot.nfsroot.server", inet_ntoa(rootip), 1);
|
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setenv("boot.nfsroot.path", rootpath, 1);
|
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setenv("boot.nfsroot.nfshandle", buf, 1);
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|
|
/* Allocate file system specific data structure */
|
|
currfd = malloc(sizeof(*newfd));
|
|
if (currfd == NULL) {
|
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error = ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
#ifndef NFS_NOSYMLINK
|
|
bcopy(&nfs_root_node, currfd, sizeof(*currfd));
|
|
newfd = 0;
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|
|
cp = path = strdup(upath);
|
|
if (path == NULL) {
|
|
error = ENOMEM;
|
|
goto out;
|
|
}
|
|
while (*cp) {
|
|
/*
|
|
* Remove extra separators
|
|
*/
|
|
while (*cp == '/')
|
|
cp++;
|
|
|
|
if (*cp == '\0')
|
|
break;
|
|
/*
|
|
* Check that current node is a directory.
|
|
*/
|
|
if (currfd->fa.fa_type != htonl(NFDIR)) {
|
|
error = ENOTDIR;
|
|
goto out;
|
|
}
|
|
|
|
/* allocate file system specific data structure */
|
|
newfd = malloc(sizeof(*newfd));
|
|
newfd->iodesc = currfd->iodesc;
|
|
|
|
/*
|
|
* Get next component of path name.
|
|
*/
|
|
{
|
|
int len = 0;
|
|
|
|
ncp = cp;
|
|
while ((c = *cp) != '\0' && c != '/') {
|
|
if (++len > NFS_MAXNAMLEN) {
|
|
error = ENOENT;
|
|
goto out;
|
|
}
|
|
cp++;
|
|
}
|
|
*cp = '\0';
|
|
}
|
|
|
|
/* lookup a file handle */
|
|
error = nfs_lookupfh(currfd, ncp, newfd);
|
|
*cp = c;
|
|
if (error)
|
|
goto out;
|
|
|
|
/*
|
|
* Check for symbolic link
|
|
*/
|
|
if (newfd->fa.fa_type == htonl(NFLNK)) {
|
|
int link_len, len;
|
|
|
|
error = nfs_readlink(newfd, linkbuf);
|
|
if (error)
|
|
goto out;
|
|
|
|
link_len = strlen(linkbuf);
|
|
len = strlen(cp);
|
|
|
|
if (link_len + len > MAXPATHLEN
|
|
|| ++nlinks > MAXSYMLINKS) {
|
|
error = ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
bcopy(cp, &namebuf[link_len], len + 1);
|
|
bcopy(linkbuf, namebuf, link_len);
|
|
|
|
/*
|
|
* If absolute pathname, restart at root.
|
|
* If relative pathname, restart at parent directory.
|
|
*/
|
|
cp = namebuf;
|
|
if (*cp == '/')
|
|
bcopy(&nfs_root_node, currfd, sizeof(*currfd));
|
|
|
|
free(newfd);
|
|
newfd = 0;
|
|
|
|
continue;
|
|
}
|
|
|
|
free(currfd);
|
|
currfd = newfd;
|
|
newfd = 0;
|
|
}
|
|
|
|
error = 0;
|
|
|
|
out:
|
|
free(newfd);
|
|
free(path);
|
|
#else
|
|
currfd->iodesc = desc;
|
|
|
|
error = nfs_lookupfh(&nfs_root_node, upath, currfd);
|
|
#endif
|
|
if (!error) {
|
|
currfd->off = 0;
|
|
f->f_fsdata = (void *)currfd;
|
|
return (0);
|
|
}
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_open: %s lookupfh failed: %s\n",
|
|
path, strerror(error));
|
|
#endif
|
|
free(currfd);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
nfs_close(struct open_file *f)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_close: fp=0x%lx\n", (u_long)fp);
|
|
#endif
|
|
|
|
if (fp)
|
|
free(fp);
|
|
f->f_fsdata = (void *)0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* read a portion of a file
|
|
*/
|
|
int
|
|
nfs_read(struct open_file *f, void *buf, size_t size, size_t *resid)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
ssize_t cc;
|
|
char *addr = buf;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_read: size=%lu off=%d\n", (u_long)size,
|
|
(int)fp->off);
|
|
#endif
|
|
while ((int)size > 0) {
|
|
twiddle(16);
|
|
cc = nfs_readdata(fp, fp->off, (void *)addr, size);
|
|
/* XXX maybe should retry on certain errors */
|
|
if (cc == -1) {
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_read: read: %s", strerror(errno));
|
|
#endif
|
|
return (errno); /* XXX - from nfs_readdata */
|
|
}
|
|
if (cc == 0) {
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_read: hit EOF unexpectantly");
|
|
#endif
|
|
goto ret;
|
|
}
|
|
fp->off += cc;
|
|
addr += cc;
|
|
size -= cc;
|
|
}
|
|
ret:
|
|
if (resid)
|
|
*resid = size;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Not implemented.
|
|
*/
|
|
int
|
|
nfs_write(struct open_file *f, void *buf, size_t size, size_t *resid)
|
|
{
|
|
return (EROFS);
|
|
}
|
|
|
|
off_t
|
|
nfs_seek(struct open_file *f, off_t offset, int where)
|
|
{
|
|
struct nfs_iodesc *d = (struct nfs_iodesc *)f->f_fsdata;
|
|
n_long size = ntohl(d->fa.fa_size);
|
|
|
|
switch (where) {
|
|
case SEEK_SET:
|
|
d->off = offset;
|
|
break;
|
|
case SEEK_CUR:
|
|
d->off += offset;
|
|
break;
|
|
case SEEK_END:
|
|
d->off = size - offset;
|
|
break;
|
|
default:
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
|
|
return (d->off);
|
|
}
|
|
|
|
/* NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5 */
|
|
int nfs_stat_types[8] = {
|
|
0, S_IFREG, S_IFDIR, S_IFBLK, S_IFCHR, S_IFLNK, 0 };
|
|
|
|
int
|
|
nfs_stat(struct open_file *f, struct stat *sb)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
n_long ftype, mode;
|
|
|
|
ftype = ntohl(fp->fa.fa_type);
|
|
mode = ntohl(fp->fa.fa_mode);
|
|
mode |= nfs_stat_types[ftype & 7];
|
|
|
|
sb->st_mode = mode;
|
|
sb->st_nlink = ntohl(fp->fa.fa_nlink);
|
|
sb->st_uid = ntohl(fp->fa.fa_uid);
|
|
sb->st_gid = ntohl(fp->fa.fa_gid);
|
|
sb->st_size = ntohl(fp->fa.fa_size);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
nfs_readdir(struct open_file *f, struct dirent *d)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
struct nfs_readdir_args *args;
|
|
struct nfs_readdir_data *rd;
|
|
struct nfs_readdir_off *roff = NULL;
|
|
static char *buf;
|
|
static struct nfs_iodesc *pfp = NULL;
|
|
static n_long cookie = 0;
|
|
size_t cc;
|
|
n_long eof;
|
|
|
|
struct {
|
|
n_long h[RPC_HEADER_WORDS];
|
|
struct nfs_readdir_args d;
|
|
} sdata;
|
|
static struct {
|
|
n_long h[RPC_HEADER_WORDS];
|
|
u_char d[NFS_READDIRSIZE];
|
|
} rdata;
|
|
|
|
if (fp != pfp || fp->off != cookie) {
|
|
pfp = NULL;
|
|
refill:
|
|
args = &sdata.d;
|
|
bzero(args, sizeof(*args));
|
|
|
|
bcopy(fp->fh, args->fh, NFS_FHSIZE);
|
|
args->cookie = htonl(fp->off);
|
|
args->count = htonl(NFS_READDIRSIZE);
|
|
|
|
cc = rpc_call(fp->iodesc, NFS_PROG, NFS_VER2, NFSPROC_READDIR,
|
|
args, sizeof(*args),
|
|
rdata.d, sizeof(rdata.d));
|
|
buf = rdata.d;
|
|
roff = (struct nfs_readdir_off *)buf;
|
|
if (ntohl(roff->cookie) != 0)
|
|
return EIO;
|
|
pfp = fp;
|
|
cookie = fp->off;
|
|
}
|
|
roff = (struct nfs_readdir_off *)buf;
|
|
|
|
if (ntohl(roff->follows) == 0) {
|
|
eof = ntohl((roff+1)->cookie);
|
|
if (eof) {
|
|
cookie = 0;
|
|
return ENOENT;
|
|
}
|
|
goto refill;
|
|
}
|
|
|
|
buf += sizeof(struct nfs_readdir_off);
|
|
rd = (struct nfs_readdir_data *)buf;
|
|
d->d_namlen = ntohl(rd->len);
|
|
bcopy(rd->name, d->d_name, d->d_namlen);
|
|
d->d_name[d->d_namlen] = '\0';
|
|
|
|
buf += (sizeof(struct nfs_readdir_data) + roundup(htonl(rd->len),4));
|
|
roff = (struct nfs_readdir_off *)buf;
|
|
fp->off = cookie = ntohl(roff->cookie);
|
|
return 0;
|
|
}
|
|
#else /* !OLD_NFSV2 */
|
|
/*
|
|
* Fetch the root file handle (call mount daemon)
|
|
* Return zero or error number.
|
|
*/
|
|
int
|
|
nfs_getrootfh(struct iodesc *d, char *path, uint32_t *fhlenp, u_char *fhp)
|
|
{
|
|
int len;
|
|
struct args {
|
|
uint32_t len;
|
|
char path[FNAME_SIZE];
|
|
} *args;
|
|
struct repl {
|
|
uint32_t errno;
|
|
uint32_t fhsize;
|
|
u_char fh[NFS_V3MAXFHSIZE];
|
|
uint32_t authcnt;
|
|
uint32_t auth[7];
|
|
} *repl;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct args d;
|
|
} sdata;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct repl d;
|
|
} rdata;
|
|
size_t cc;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_getrootfh: %s\n", path);
|
|
#endif
|
|
|
|
args = &sdata.d;
|
|
repl = &rdata.d;
|
|
|
|
bzero(args, sizeof(*args));
|
|
len = strlen(path);
|
|
if (len > sizeof(args->path))
|
|
len = sizeof(args->path);
|
|
args->len = htonl(len);
|
|
bcopy(path, args->path, len);
|
|
len = sizeof(uint32_t) + roundup(len, sizeof(uint32_t));
|
|
|
|
cc = rpc_call(d, RPCPROG_MNT, RPCMNT_VER3, RPCMNT_MOUNT,
|
|
args, len, repl, sizeof(*repl));
|
|
if (cc == -1)
|
|
/* errno was set by rpc_call */
|
|
return (errno);
|
|
if (cc < 2 * sizeof (uint32_t))
|
|
return (EBADRPC);
|
|
if (repl->errno != 0)
|
|
return (ntohl(repl->errno));
|
|
*fhlenp = ntohl(repl->fhsize);
|
|
bcopy(repl->fh, fhp, *fhlenp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Lookup a file. Store handle and attributes.
|
|
* Return zero or error number.
|
|
*/
|
|
int
|
|
nfs_lookupfh(struct nfs_iodesc *d, const char *name, struct nfs_iodesc *newfd)
|
|
{
|
|
int len, rlen, pos;
|
|
struct args {
|
|
uint32_t fhsize;
|
|
uint32_t fhplusname[1 +
|
|
(NFS_V3MAXFHSIZE + FNAME_SIZE) / sizeof(uint32_t)];
|
|
} *args;
|
|
struct repl {
|
|
uint32_t errno;
|
|
uint32_t fhsize;
|
|
uint32_t fhplusattr[(NFS_V3MAXFHSIZE +
|
|
2 * (sizeof(uint32_t) +
|
|
sizeof(struct nfsv3_fattrs))) / sizeof(uint32_t)];
|
|
} *repl;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct args d;
|
|
} sdata;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct repl d;
|
|
} rdata;
|
|
ssize_t cc;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("lookupfh: called\n");
|
|
#endif
|
|
|
|
args = &sdata.d;
|
|
repl = &rdata.d;
|
|
|
|
bzero(args, sizeof(*args));
|
|
args->fhsize = htonl(d->fhsize);
|
|
bcopy(d->fh, args->fhplusname, d->fhsize);
|
|
len = strlen(name);
|
|
if (len > FNAME_SIZE)
|
|
len = FNAME_SIZE;
|
|
pos = roundup(d->fhsize, sizeof(uint32_t)) / sizeof(uint32_t);
|
|
args->fhplusname[pos++] = htonl(len);
|
|
bcopy(name, &args->fhplusname[pos], len);
|
|
len = sizeof(uint32_t) + pos * sizeof(uint32_t) +
|
|
roundup(len, sizeof(uint32_t));
|
|
|
|
rlen = sizeof(*repl);
|
|
|
|
cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_LOOKUP,
|
|
args, len, repl, rlen);
|
|
if (cc == -1)
|
|
return (errno); /* XXX - from rpc_call */
|
|
if (cc < 2 * sizeof(uint32_t))
|
|
return (EIO);
|
|
if (repl->errno != 0)
|
|
/* saerrno.h now matches NFS error numbers. */
|
|
return (ntohl(repl->errno));
|
|
newfd->fhsize = ntohl(repl->fhsize);
|
|
bcopy(repl->fhplusattr, &newfd->fh, newfd->fhsize);
|
|
pos = roundup(newfd->fhsize, sizeof(uint32_t)) / sizeof(uint32_t);
|
|
if (repl->fhplusattr[pos++] == 0)
|
|
return (EIO);
|
|
bcopy(&repl->fhplusattr[pos], &newfd->fa, sizeof(newfd->fa));
|
|
return (0);
|
|
}
|
|
|
|
#ifndef NFS_NOSYMLINK
|
|
/*
|
|
* Get the destination of a symbolic link.
|
|
*/
|
|
int
|
|
nfs_readlink(struct nfs_iodesc *d, char *buf)
|
|
{
|
|
struct args {
|
|
uint32_t fhsize;
|
|
u_char fh[NFS_V3MAXFHSIZE];
|
|
} *args;
|
|
struct repl {
|
|
uint32_t errno;
|
|
uint32_t ok;
|
|
struct nfsv3_fattrs fa;
|
|
uint32_t len;
|
|
u_char path[NFS_MAXPATHLEN];
|
|
} *repl;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct args d;
|
|
} sdata;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct repl d;
|
|
} rdata;
|
|
ssize_t cc;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("readlink: called\n");
|
|
#endif
|
|
|
|
args = &sdata.d;
|
|
repl = &rdata.d;
|
|
|
|
bzero(args, sizeof(*args));
|
|
args->fhsize = htonl(d->fhsize);
|
|
bcopy(d->fh, args->fh, d->fhsize);
|
|
cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_READLINK,
|
|
args, sizeof(uint32_t) + roundup(d->fhsize, sizeof(uint32_t)),
|
|
repl, sizeof(*repl));
|
|
if (cc == -1)
|
|
return (errno);
|
|
|
|
if (cc < 2 * sizeof(uint32_t))
|
|
return (EIO);
|
|
|
|
if (repl->errno != 0)
|
|
return (ntohl(repl->errno));
|
|
|
|
if (repl->ok == 0)
|
|
return (EIO);
|
|
|
|
repl->len = ntohl(repl->len);
|
|
if (repl->len > NFS_MAXPATHLEN)
|
|
return (ENAMETOOLONG);
|
|
|
|
bcopy(repl->path, buf, repl->len);
|
|
buf[repl->len] = 0;
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Read data from a file.
|
|
* Return transfer count or -1 (and set errno)
|
|
*/
|
|
ssize_t
|
|
nfs_readdata(struct nfs_iodesc *d, off_t off, void *addr, size_t len)
|
|
{
|
|
struct args {
|
|
uint32_t fhsize;
|
|
uint32_t fhoffcnt[NFS_V3MAXFHSIZE / sizeof(uint32_t) + 3];
|
|
} *args;
|
|
struct repl {
|
|
uint32_t errno;
|
|
uint32_t ok;
|
|
struct nfsv3_fattrs fa;
|
|
uint32_t count;
|
|
uint32_t eof;
|
|
uint32_t len;
|
|
u_char data[NFSREAD_SIZE];
|
|
} *repl;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct args d;
|
|
} sdata;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct repl d;
|
|
} rdata;
|
|
size_t cc;
|
|
long x;
|
|
int hlen, rlen, pos;
|
|
|
|
args = &sdata.d;
|
|
repl = &rdata.d;
|
|
|
|
bzero(args, sizeof(*args));
|
|
args->fhsize = htonl(d->fhsize);
|
|
bcopy(d->fh, args->fhoffcnt, d->fhsize);
|
|
pos = roundup(d->fhsize, sizeof(uint32_t)) / sizeof(uint32_t);
|
|
args->fhoffcnt[pos++] = 0;
|
|
args->fhoffcnt[pos++] = htonl((uint32_t)off);
|
|
if (len > NFSREAD_SIZE)
|
|
len = NFSREAD_SIZE;
|
|
args->fhoffcnt[pos] = htonl((uint32_t)len);
|
|
hlen = sizeof(*repl) - NFSREAD_SIZE;
|
|
|
|
cc = rpc_call(d->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_READ,
|
|
args, 4 * sizeof(uint32_t) + roundup(d->fhsize, sizeof(uint32_t)),
|
|
repl, sizeof(*repl));
|
|
if (cc == -1)
|
|
/* errno was already set by rpc_call */
|
|
return (-1);
|
|
if (cc < hlen) {
|
|
errno = EBADRPC;
|
|
return (-1);
|
|
}
|
|
if (repl->errno != 0) {
|
|
errno = ntohl(repl->errno);
|
|
return (-1);
|
|
}
|
|
rlen = cc - hlen;
|
|
x = ntohl(repl->count);
|
|
if (rlen < x) {
|
|
printf("nfsread: short packet, %d < %ld\n", rlen, x);
|
|
errno = EBADRPC;
|
|
return (-1);
|
|
}
|
|
bcopy(repl->data, addr, x);
|
|
return (x);
|
|
}
|
|
|
|
/*
|
|
* Open a file.
|
|
* return zero or error number
|
|
*/
|
|
int
|
|
nfs_open(const char *upath, struct open_file *f)
|
|
{
|
|
struct iodesc *desc;
|
|
struct nfs_iodesc *currfd;
|
|
char buf[2 * NFS_V3MAXFHSIZE + 3];
|
|
u_char *fh;
|
|
char *cp;
|
|
int i;
|
|
#ifndef NFS_NOSYMLINK
|
|
struct nfs_iodesc *newfd;
|
|
struct nfsv3_fattrs *fa;
|
|
char *ncp;
|
|
int c;
|
|
char namebuf[NFS_MAXPATHLEN + 1];
|
|
char linkbuf[NFS_MAXPATHLEN + 1];
|
|
int nlinks = 0;
|
|
#endif
|
|
int error;
|
|
char *path;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_open: %s (rootpath=%s)\n", upath, rootpath);
|
|
#endif
|
|
if (!rootpath[0]) {
|
|
printf("no rootpath, no nfs\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
/*
|
|
* This is silly - we should look at dv_type but that value is
|
|
* arch dependant and we can't use it here.
|
|
*/
|
|
#ifndef __i386__
|
|
if (strcmp(f->f_dev->dv_name, "net") != 0)
|
|
return (EINVAL);
|
|
#else
|
|
if (strcmp(f->f_dev->dv_name, "pxe") != 0)
|
|
return (EINVAL);
|
|
#endif
|
|
|
|
if (!(desc = socktodesc(*(int *)(f->f_devdata))))
|
|
return (EINVAL);
|
|
|
|
/* Bind to a reserved port. */
|
|
desc->myport = htons(--rpc_port);
|
|
desc->destip = rootip;
|
|
if ((error = nfs_getrootfh(desc, rootpath, &nfs_root_node.fhsize,
|
|
nfs_root_node.fh)))
|
|
return (error);
|
|
nfs_root_node.fa.fa_type = htonl(NFDIR);
|
|
nfs_root_node.fa.fa_mode = htonl(0755);
|
|
nfs_root_node.fa.fa_nlink = htonl(2);
|
|
nfs_root_node.iodesc = desc;
|
|
|
|
fh = &nfs_root_node.fh[0];
|
|
buf[0] = 'X';
|
|
cp = &buf[1];
|
|
for (i = 0; i < nfs_root_node.fhsize; i++, cp += 2)
|
|
sprintf(cp, "%02x", fh[i]);
|
|
sprintf(cp, "X");
|
|
setenv("boot.nfsroot.server", inet_ntoa(rootip), 1);
|
|
setenv("boot.nfsroot.path", rootpath, 1);
|
|
setenv("boot.nfsroot.nfshandle", buf, 1);
|
|
sprintf(buf, "%d", nfs_root_node.fhsize);
|
|
setenv("boot.nfsroot.nfshandlelen", buf, 1);
|
|
|
|
/* Allocate file system specific data structure */
|
|
currfd = malloc(sizeof(*newfd));
|
|
if (currfd == NULL) {
|
|
error = ENOMEM;
|
|
goto out;
|
|
}
|
|
#ifndef NFS_NOSYMLINK
|
|
bcopy(&nfs_root_node, currfd, sizeof(*currfd));
|
|
newfd = 0;
|
|
|
|
cp = path = strdup(upath);
|
|
if (path == NULL) {
|
|
error = ENOMEM;
|
|
goto out;
|
|
}
|
|
while (*cp) {
|
|
/*
|
|
* Remove extra separators
|
|
*/
|
|
while (*cp == '/')
|
|
cp++;
|
|
|
|
if (*cp == '\0')
|
|
break;
|
|
/*
|
|
* Check that current node is a directory.
|
|
*/
|
|
if (currfd->fa.fa_type != htonl(NFDIR)) {
|
|
error = ENOTDIR;
|
|
goto out;
|
|
}
|
|
|
|
/* allocate file system specific data structure */
|
|
newfd = malloc(sizeof(*newfd));
|
|
if (newfd == NULL) {
|
|
error = ENOMEM;
|
|
goto out;
|
|
}
|
|
newfd->iodesc = currfd->iodesc;
|
|
|
|
/*
|
|
* Get next component of path name.
|
|
*/
|
|
{
|
|
int len = 0;
|
|
|
|
ncp = cp;
|
|
while ((c = *cp) != '\0' && c != '/') {
|
|
if (++len > NFS_MAXNAMLEN) {
|
|
error = ENOENT;
|
|
goto out;
|
|
}
|
|
cp++;
|
|
}
|
|
*cp = '\0';
|
|
}
|
|
|
|
/* lookup a file handle */
|
|
error = nfs_lookupfh(currfd, ncp, newfd);
|
|
*cp = c;
|
|
if (error)
|
|
goto out;
|
|
|
|
/*
|
|
* Check for symbolic link
|
|
*/
|
|
if (newfd->fa.fa_type == htonl(NFLNK)) {
|
|
int link_len, len;
|
|
|
|
error = nfs_readlink(newfd, linkbuf);
|
|
if (error)
|
|
goto out;
|
|
|
|
link_len = strlen(linkbuf);
|
|
len = strlen(cp);
|
|
|
|
if (link_len + len > MAXPATHLEN
|
|
|| ++nlinks > MAXSYMLINKS) {
|
|
error = ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
bcopy(cp, &namebuf[link_len], len + 1);
|
|
bcopy(linkbuf, namebuf, link_len);
|
|
|
|
/*
|
|
* If absolute pathname, restart at root.
|
|
* If relative pathname, restart at parent directory.
|
|
*/
|
|
cp = namebuf;
|
|
if (*cp == '/')
|
|
bcopy(&nfs_root_node, currfd, sizeof(*currfd));
|
|
|
|
free(newfd);
|
|
newfd = 0;
|
|
|
|
continue;
|
|
}
|
|
|
|
free(currfd);
|
|
currfd = newfd;
|
|
newfd = 0;
|
|
}
|
|
|
|
error = 0;
|
|
|
|
out:
|
|
free(newfd);
|
|
free(path);
|
|
#else
|
|
currfd->iodesc = desc;
|
|
|
|
error = nfs_lookupfh(&nfs_root_node, upath, currfd);
|
|
#endif
|
|
if (!error) {
|
|
currfd->off = 0;
|
|
currfd->cookie = 0;
|
|
f->f_fsdata = (void *)currfd;
|
|
return (0);
|
|
}
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_open: %s lookupfh failed: %s\n",
|
|
path, strerror(error));
|
|
#endif
|
|
free(currfd);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
nfs_close(struct open_file *f)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_close: fp=0x%lx\n", (u_long)fp);
|
|
#endif
|
|
|
|
if (fp)
|
|
free(fp);
|
|
f->f_fsdata = (void *)0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* read a portion of a file
|
|
*/
|
|
int
|
|
nfs_read(struct open_file *f, void *buf, size_t size, size_t *resid)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
ssize_t cc;
|
|
char *addr = buf;
|
|
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_read: size=%lu off=%d\n", (u_long)size,
|
|
(int)fp->off);
|
|
#endif
|
|
while ((int)size > 0) {
|
|
twiddle(16);
|
|
cc = nfs_readdata(fp, fp->off, (void *)addr, size);
|
|
/* XXX maybe should retry on certain errors */
|
|
if (cc == -1) {
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_read: read: %s", strerror(errno));
|
|
#endif
|
|
return (errno); /* XXX - from nfs_readdata */
|
|
}
|
|
if (cc == 0) {
|
|
#ifdef NFS_DEBUG
|
|
if (debug)
|
|
printf("nfs_read: hit EOF unexpectantly");
|
|
#endif
|
|
goto ret;
|
|
}
|
|
fp->off += cc;
|
|
addr += cc;
|
|
size -= cc;
|
|
}
|
|
ret:
|
|
if (resid)
|
|
*resid = size;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Not implemented.
|
|
*/
|
|
int
|
|
nfs_write(struct open_file *f, void *buf, size_t size, size_t *resid)
|
|
{
|
|
return (EROFS);
|
|
}
|
|
|
|
off_t
|
|
nfs_seek(struct open_file *f, off_t offset, int where)
|
|
{
|
|
struct nfs_iodesc *d = (struct nfs_iodesc *)f->f_fsdata;
|
|
uint32_t size = ntohl(d->fa.fa_size.val[1]);
|
|
|
|
switch (where) {
|
|
case SEEK_SET:
|
|
d->off = offset;
|
|
break;
|
|
case SEEK_CUR:
|
|
d->off += offset;
|
|
break;
|
|
case SEEK_END:
|
|
d->off = size - offset;
|
|
break;
|
|
default:
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
|
|
return (d->off);
|
|
}
|
|
|
|
/* NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5, NFSOCK=6, NFFIFO=7 */
|
|
int nfs_stat_types[9] = {
|
|
0, S_IFREG, S_IFDIR, S_IFBLK, S_IFCHR, S_IFLNK, S_IFSOCK, S_IFIFO, 0 };
|
|
|
|
int
|
|
nfs_stat(struct open_file *f, struct stat *sb)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
uint32_t ftype, mode;
|
|
|
|
ftype = ntohl(fp->fa.fa_type);
|
|
mode = ntohl(fp->fa.fa_mode);
|
|
mode |= nfs_stat_types[ftype & 7];
|
|
|
|
sb->st_mode = mode;
|
|
sb->st_nlink = ntohl(fp->fa.fa_nlink);
|
|
sb->st_uid = ntohl(fp->fa.fa_uid);
|
|
sb->st_gid = ntohl(fp->fa.fa_gid);
|
|
sb->st_size = ntohl(fp->fa.fa_size.val[1]);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
nfs_readdir(struct open_file *f, struct dirent *d)
|
|
{
|
|
struct nfs_iodesc *fp = (struct nfs_iodesc *)f->f_fsdata;
|
|
struct nfsv3_readdir_repl *repl;
|
|
struct nfsv3_readdir_entry *rent;
|
|
static char *buf;
|
|
static struct nfs_iodesc *pfp = NULL;
|
|
static uint64_t cookie = 0;
|
|
size_t cc;
|
|
int pos;
|
|
|
|
struct args {
|
|
uint32_t fhsize;
|
|
uint32_t fhpluscookie[5 + NFS_V3MAXFHSIZE];
|
|
} *args;
|
|
struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
struct args d;
|
|
} sdata;
|
|
static struct {
|
|
uint32_t h[RPC_HEADER_WORDS];
|
|
u_char d[NFS_READDIRSIZE];
|
|
} rdata;
|
|
|
|
if (fp != pfp || fp->off != cookie) {
|
|
pfp = NULL;
|
|
refill:
|
|
args = &sdata.d;
|
|
bzero(args, sizeof(*args));
|
|
|
|
args->fhsize = htonl(fp->fhsize);
|
|
bcopy(fp->fh, args->fhpluscookie, fp->fhsize);
|
|
pos = roundup(fp->fhsize, sizeof(uint32_t)) / sizeof(uint32_t);
|
|
args->fhpluscookie[pos++] = htonl(fp->off >> 32);
|
|
args->fhpluscookie[pos++] = htonl(fp->off);
|
|
args->fhpluscookie[pos++] = htonl(fp->cookie >> 32);
|
|
args->fhpluscookie[pos++] = htonl(fp->cookie);
|
|
args->fhpluscookie[pos] = htonl(NFS_READDIRSIZE);
|
|
|
|
cc = rpc_call(fp->iodesc, NFS_PROG, NFS_VER3, NFSPROCV3_READDIR,
|
|
args, 6 * sizeof(uint32_t) +
|
|
roundup(fp->fhsize, sizeof(uint32_t)),
|
|
rdata.d, sizeof(rdata.d));
|
|
buf = rdata.d;
|
|
repl = (struct nfsv3_readdir_repl *)buf;
|
|
if (repl->errno != 0)
|
|
return (ntohl(repl->errno));
|
|
pfp = fp;
|
|
cookie = fp->off;
|
|
fp->cookie = ((uint64_t)ntohl(repl->cookiev0) << 32) |
|
|
ntohl(repl->cookiev1);
|
|
buf += sizeof (struct nfsv3_readdir_repl);
|
|
}
|
|
rent = (struct nfsv3_readdir_entry *)buf;
|
|
|
|
if (rent->follows == 0) {
|
|
/* fid0 is actually eof */
|
|
if (rent->fid0 != 0) {
|
|
cookie = 0;
|
|
return (ENOENT);
|
|
}
|
|
goto refill;
|
|
}
|
|
|
|
d->d_namlen = ntohl(rent->len);
|
|
bcopy(rent->nameplus, d->d_name, d->d_namlen);
|
|
d->d_name[d->d_namlen] = '\0';
|
|
|
|
pos = roundup(d->d_namlen, sizeof(uint32_t)) / sizeof(uint32_t);
|
|
fp->off = cookie = ((uint64_t)ntohl(rent->nameplus[pos]) << 32) |
|
|
ntohl(rent->nameplus[pos + 1]);
|
|
pos += 2;
|
|
buf = (u_char *)&rent->nameplus[pos];
|
|
return (0);
|
|
}
|
|
#endif /* OLD_NFSV2 */
|