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freebsd-skq/contrib/tcpdump/print-nfs.c
Bill Fenner 943ee2b15a Merge tcpdump 3.6.2
2001-04-03 07:50:46 +00:00

1736 lines
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/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $FreeBSD$
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-nfs.c,v 1.87 2000/10/07 05:53:12 itojun Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>
struct mbuf;
struct rtentry;
#include <netinet/in.h>
#include <rpc/rpc.h>
#include <ctype.h>
#include <pcap.h>
#include <stdio.h>
#include <string.h>
#include "interface.h"
#include "addrtoname.h"
#include "nfs.h"
#include "nfsfh.h"
#include "ip.h"
#ifdef INET6
#include "ip6.h"
#endif
static void nfs_printfh(const u_int32_t *, const u_int);
static void xid_map_enter(const struct rpc_msg *, const u_char *);
static int32_t xid_map_find(const struct rpc_msg *, const u_char *,
u_int32_t *, u_int32_t *);
static void interp_reply(const struct rpc_msg *, u_int32_t, u_int32_t, int);
static const u_int32_t *parse_post_op_attr(const u_int32_t *, int);
static void print_sattr3(const struct nfsv3_sattr *sa3, int verbose);
static int print_int64(const u_int32_t *dp, int how);
static void print_nfsaddr(const u_char *, const char *, const char *);
/*
* Mapping of old NFS Version 2 RPC numbers to generic numbers.
*/
u_int32_t nfsv3_procid[NFS_NPROCS] = {
NFSPROC_NULL,
NFSPROC_GETATTR,
NFSPROC_SETATTR,
NFSPROC_NOOP,
NFSPROC_LOOKUP,
NFSPROC_READLINK,
NFSPROC_READ,
NFSPROC_NOOP,
NFSPROC_WRITE,
NFSPROC_CREATE,
NFSPROC_REMOVE,
NFSPROC_RENAME,
NFSPROC_LINK,
NFSPROC_SYMLINK,
NFSPROC_MKDIR,
NFSPROC_RMDIR,
NFSPROC_READDIR,
NFSPROC_FSSTAT,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP
};
/*
* NFS V2 and V3 status values.
*
* Some of these come from the RFCs for NFS V2 and V3, with the message
* strings taken from the FreeBSD C library "errlst.c".
*
* Others are errors that are not in the RFC but that I suspect some
* NFS servers could return; the values are FreeBSD errno values, as
* the first NFS server was the SunOS 2.0 one, and until 5.0 SunOS
* was primarily BSD-derived.
*/
static struct tok status2str[] = {
{ 1, "Operation not permitted" }, /* EPERM */
{ 2, "No such file or directory" }, /* ENOENT */
{ 5, "Input/output error" }, /* EIO */
{ 6, "Device not configured" }, /* ENXIO */
{ 11, "Resource deadlock avoided" }, /* EDEADLK */
{ 12, "Cannot allocate memory" }, /* ENOMEM */
{ 13, "Permission denied" }, /* EACCES */
{ 17, "File exists" }, /* EEXIST */
{ 18, "Cross-device link" }, /* EXDEV */
{ 19, "Operation not supported by device" }, /* ENODEV */
{ 20, "Not a directory" }, /* ENOTDIR */
{ 21, "Is a directory" }, /* EISDIR */
{ 22, "Invalid argument" }, /* EINVAL */
{ 26, "Text file busy" }, /* ETXTBSY */
{ 27, "File too large" }, /* EFBIG */
{ 28, "No space left on device" }, /* ENOSPC */
{ 30, "Read-only file system" }, /* EROFS */
{ 31, "Too many links" }, /* EMLINK */
{ 45, "Operation not supported" }, /* EOPNOTSUPP */
{ 62, "Too many levels of symbolic links" }, /* ELOOP */
{ 63, "File name too long" }, /* ENAMETOOLONG */
{ 66, "Directory not empty" }, /* ENOTEMPTY */
{ 69, "Disc quota exceeded" }, /* EDQUOT */
{ 70, "Stale NFS file handle" }, /* ESTALE */
{ 71, "Too many levels of remote in path" }, /* EREMOTE */
{ 99, "Write cache flushed to disk" }, /* NFSERR_WFLUSH (not used) */
{ 10001, "Illegal NFS file handle" }, /* NFS3ERR_BADHANDLE */
{ 10002, "Update synchronization mismatch" }, /* NFS3ERR_NOT_SYNC */
{ 10003, "READDIR/READDIRPLUS cookie is stale" }, /* NFS3ERR_BAD_COOKIE */
{ 10004, "Operation not supported" }, /* NFS3ERR_NOTSUPP */
{ 10005, "Buffer or request is too small" }, /* NFS3ERR_TOOSMALL */
{ 10006, "Unspecified error on server" }, /* NFS3ERR_SERVERFAULT */
{ 10007, "Object of that type not supported" }, /* NFS3ERR_BADTYPE */
{ 10008, "Request couldn't be completed in time" }, /* NFS3ERR_JUKEBOX */
{ 0, NULL }
};
static struct tok nfsv3_writemodes[] = {
{ 0, "unstable" },
{ 1, "datasync" },
{ 2, "filesync" },
{ 0, NULL }
};
static struct tok type2str[] = {
{ NFNON, "NON" },
{ NFREG, "REG" },
{ NFDIR, "DIR" },
{ NFBLK, "BLK" },
{ NFCHR, "CHR" },
{ NFLNK, "LNK" },
{ NFFIFO, "FIFO" },
{ 0, NULL }
};
/*
* Print out a 64-bit integer. This appears to be different on each system,
* try to make the best of it. The integer stored as 2 consecutive XDR
* encoded 32-bit integers, to which a pointer is passed.
*
* Assume that a system that has INT64_FORMAT defined, has a 64-bit
* integer datatype and can print it.
*/
#define UNSIGNED 0
#define SIGNED 1
#define HEX 2
static int print_int64(const u_int32_t *dp, int how)
{
#ifdef INT64_FORMAT
u_int64_t res;
res = ((u_int64_t)ntohl(dp[0]) << 32) | (u_int64_t)ntohl(dp[1]);
switch (how) {
case SIGNED:
printf(INT64_FORMAT, res);
break;
case UNSIGNED:
printf(U_INT64_FORMAT, res);
break;
case HEX:
printf(HEX_INT64_FORMAT, res);
break;
default:
return (0);
}
#else
switch (how) {
case SIGNED:
case UNSIGNED:
case HEX:
printf("0x%x%08x", (u_int32_t)ntohl(dp[0]),
(u_int32_t)ntohl(dp[1]));
break;
default:
return (0);
}
#endif
return 1;
}
static void
print_nfsaddr(const u_char *bp, const char *s, const char *d)
{
struct ip *ip;
#ifdef INET6
struct ip6_hdr *ip6;
char srcaddr[INET6_ADDRSTRLEN], dstaddr[INET6_ADDRSTRLEN];
#else
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16
#endif
char srcaddr[INET_ADDRSTRLEN], dstaddr[INET_ADDRSTRLEN];
#endif
srcaddr[0] = dstaddr[0] = '\0';
switch (IP_V((struct ip *)bp)) {
case 4:
ip = (struct ip *)bp;
strlcpy(srcaddr, ipaddr_string(&ip->ip_src), sizeof(srcaddr));
strlcpy(dstaddr, ipaddr_string(&ip->ip_dst), sizeof(dstaddr));
break;
#ifdef INET6
case 6:
ip6 = (struct ip6_hdr *)bp;
strlcpy(srcaddr, ip6addr_string(&ip6->ip6_src),
sizeof(srcaddr));
strlcpy(dstaddr, ip6addr_string(&ip6->ip6_dst),
sizeof(dstaddr));
break;
#endif
default:
strlcpy(srcaddr, "?", sizeof(srcaddr));
strlcpy(dstaddr, "?", sizeof(dstaddr));
break;
}
(void)printf("%s.%s > %s.%s: ", srcaddr, s, dstaddr, d);
}
static const u_int32_t *
parse_sattr3(const u_int32_t *dp, struct nfsv3_sattr *sa3)
{
TCHECK(dp[0]);
if ((sa3->sa_modeset = ntohl(*dp++))) {
TCHECK(dp[0]);
sa3->sa_mode = ntohl(*dp++);
}
TCHECK(dp[0]);
if ((sa3->sa_uidset = ntohl(*dp++))) {
TCHECK(dp[0]);
sa3->sa_uid = ntohl(*dp++);
}
TCHECK(dp[0]);
if ((sa3->sa_gidset = ntohl(*dp++))) {
TCHECK(dp[0]);
sa3->sa_gid = ntohl(*dp++);
}
TCHECK(dp[0]);
if ((sa3->sa_sizeset = ntohl(*dp++))) {
TCHECK(dp[0]);
sa3->sa_size = ntohl(*dp++);
}
TCHECK(dp[0]);
if ((sa3->sa_atimetype = ntohl(*dp++)) == NFSV3SATTRTIME_TOCLIENT) {
TCHECK(dp[1]);
sa3->sa_atime.nfsv3_sec = ntohl(*dp++);
sa3->sa_atime.nfsv3_nsec = ntohl(*dp++);
}
TCHECK(dp[0]);
if ((sa3->sa_mtimetype = ntohl(*dp++)) == NFSV3SATTRTIME_TOCLIENT) {
TCHECK(dp[1]);
sa3->sa_mtime.nfsv3_sec = ntohl(*dp++);
sa3->sa_mtime.nfsv3_nsec = ntohl(*dp++);
}
return dp;
trunc:
return NULL;
}
static int nfserr; /* true if we error rather than trunc */
static void
print_sattr3(const struct nfsv3_sattr *sa3, int verbose)
{
if (sa3->sa_modeset)
printf(" mode %o", sa3->sa_mode);
if (sa3->sa_uidset)
printf(" uid %u", sa3->sa_uid);
if (sa3->sa_gidset)
printf(" gid %u", sa3->sa_gid);
if (verbose > 1) {
if (sa3->sa_atimetype == NFSV3SATTRTIME_TOCLIENT)
printf(" atime %u.%06u", sa3->sa_atime.nfsv3_sec,
sa3->sa_atime.nfsv3_nsec);
if (sa3->sa_mtimetype == NFSV3SATTRTIME_TOCLIENT)
printf(" mtime %u.%06u", sa3->sa_mtime.nfsv3_sec,
sa3->sa_mtime.nfsv3_nsec);
}
}
void
nfsreply_print(register const u_char *bp, u_int length,
register const u_char *bp2)
{
register const struct rpc_msg *rp;
u_int32_t proc, vers;
char srcid[20], dstid[20]; /*fits 32bit*/
nfserr = 0; /* assume no error */
rp = (const struct rpc_msg *)bp;
if (!nflag) {
strlcpy(srcid, "nfs", sizeof(srcid));
snprintf(dstid, sizeof(dstid), "%u",
(u_int32_t)ntohl(rp->rm_xid));
} else {
snprintf(srcid, sizeof(srcid), "%u", NFS_PORT);
snprintf(dstid, sizeof(dstid), "%u",
(u_int32_t)ntohl(rp->rm_xid));
}
print_nfsaddr(bp2, srcid, dstid);
(void)printf("reply %s %d",
ntohl(rp->rm_reply.rp_stat) == MSG_ACCEPTED?
"ok":"ERR",
length);
if (xid_map_find(rp, bp2, &proc, &vers) >= 0)
interp_reply(rp, proc, vers, length);
}
/*
* Return a pointer to the first file handle in the packet.
* If the packet was truncated, return 0.
*/
static const u_int32_t *
parsereq(register const struct rpc_msg *rp, register u_int length)
{
register const u_int32_t *dp;
register u_int len;
/*
* find the start of the req data (if we captured it)
*/
dp = (u_int32_t *)&rp->rm_call.cb_cred;
TCHECK(dp[1]);
len = ntohl(dp[1]);
if (len < length) {
dp += (len + (2 * sizeof(*dp) + 3)) / sizeof(*dp);
TCHECK(dp[1]);
len = ntohl(dp[1]);
if (len < length) {
dp += (len + (2 * sizeof(*dp) + 3)) / sizeof(*dp);
TCHECK2(dp[0], 0);
return (dp);
}
}
trunc:
return (NULL);
}
/*
* Print out an NFS file handle and return a pointer to following word.
* If packet was truncated, return 0.
*/
static const u_int32_t *
parsefh(register const u_int32_t *dp, int v3)
{
int len;
if (v3) {
TCHECK(dp[0]);
len = (int)ntohl(*dp) / 4;
dp++;
} else
len = NFSX_V2FH / 4;
if (TTEST2(*dp, len * sizeof(*dp))) {
nfs_printfh(dp, len);
return (dp + len);
}
trunc:
return (NULL);
}
/*
* Print out a file name and return pointer to 32-bit word past it.
* If packet was truncated, return 0.
*/
static const u_int32_t *
parsefn(register const u_int32_t *dp)
{
register u_int32_t len;
register const u_char *cp;
/* Bail if we don't have the string length */
TCHECK(*dp);
/* Fetch string length; convert to host order */
len = *dp++;
NTOHL(len);
TCHECK2(*dp, ((len + 3) & ~3));
cp = (u_char *)dp;
/* Update 32-bit pointer (NFS filenames padded to 32-bit boundaries) */
dp += ((len + 3) & ~3) / sizeof(*dp);
/* XXX seems like we should be checking the length */
putchar('"');
(void) fn_printn(cp, len, NULL);
putchar('"');
return (dp);
trunc:
return NULL;
}
/*
* Print out file handle and file name.
* Return pointer to 32-bit word past file name.
* If packet was truncated (or there was some other error), return 0.
*/
static const u_int32_t *
parsefhn(register const u_int32_t *dp, int v3)
{
dp = parsefh(dp, v3);
if (dp == NULL)
return (NULL);
putchar(' ');
return (parsefn(dp));
}
void
nfsreq_print(register const u_char *bp, u_int length,
register const u_char *bp2)
{
register const struct rpc_msg *rp;
register const u_int32_t *dp;
nfs_type type;
int v3;
u_int32_t proc;
struct nfsv3_sattr sa3;
char srcid[20], dstid[20]; /*fits 32bit*/
nfserr = 0; /* assume no error */
rp = (const struct rpc_msg *)bp;
if (!nflag) {
snprintf(srcid, sizeof(srcid), "%u",
(u_int32_t)ntohl(rp->rm_xid));
strlcpy(dstid, "nfs", sizeof(dstid));
} else {
snprintf(srcid, sizeof(srcid), "%u",
(u_int32_t)ntohl(rp->rm_xid));
snprintf(dstid, sizeof(dstid), "%u", NFS_PORT);
}
print_nfsaddr(bp2, srcid, dstid);
(void)printf("%d", length);
xid_map_enter(rp, bp2); /* record proc number for later on */
v3 = (ntohl(rp->rm_call.cb_vers) == NFS_VER3);
proc = ntohl(rp->rm_call.cb_proc);
if (!v3 && proc < NFS_NPROCS)
proc = nfsv3_procid[proc];
switch (proc) {
case NFSPROC_NOOP:
printf(" nop");
return;
case NFSPROC_NULL:
printf(" null");
return;
case NFSPROC_GETATTR:
printf(" getattr");
if ((dp = parsereq(rp, length)) != NULL &&
parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_SETATTR:
printf(" setattr");
if ((dp = parsereq(rp, length)) != NULL &&
parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_LOOKUP:
printf(" lookup");
if ((dp = parsereq(rp, length)) != NULL &&
parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_ACCESS:
printf(" access");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
TCHECK(dp[0]);
printf(" %04x", (u_int32_t)ntohl(dp[0]));
return;
}
break;
case NFSPROC_READLINK:
printf(" readlink");
if ((dp = parsereq(rp, length)) != NULL &&
parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_READ:
printf(" read");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
if (v3) {
TCHECK(dp[2]);
printf(" %u bytes @ ",
(u_int32_t) ntohl(dp[2]));
print_int64(dp, UNSIGNED);
} else {
TCHECK(dp[1]);
printf(" %u bytes @ %u",
(u_int32_t)ntohl(dp[1]),
(u_int32_t)ntohl(dp[0]));
}
return;
}
break;
case NFSPROC_WRITE:
printf(" write");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
if (v3) {
TCHECK(dp[4]);
printf(" %u bytes @ ",
(u_int32_t) ntohl(dp[4]));
print_int64(dp, UNSIGNED);
if (vflag) {
dp += 3;
TCHECK(dp[0]);
printf(" <%s>",
tok2str(nfsv3_writemodes,
NULL, ntohl(*dp)));
}
} else {
TCHECK(dp[3]);
printf(" %u (%u) bytes @ %u (%u)",
(u_int32_t)ntohl(dp[3]),
(u_int32_t)ntohl(dp[2]),
(u_int32_t)ntohl(dp[1]),
(u_int32_t)ntohl(dp[0]));
}
return;
}
break;
case NFSPROC_CREATE:
printf(" create");
if ((dp = parsereq(rp, length)) != NULL &&
parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_MKDIR:
printf(" mkdir");
if ((dp = parsereq(rp, length)) != 0 && parsefhn(dp, v3) != 0)
return;
break;
case NFSPROC_SYMLINK:
printf(" symlink");
if ((dp = parsereq(rp, length)) != 0 &&
(dp = parsefhn(dp, v3)) != 0) {
fputs(" ->", stdout);
if (v3 && (dp = parse_sattr3(dp, &sa3)) == 0)
break;
if (parsefn(dp) == 0)
break;
if (v3 && vflag)
print_sattr3(&sa3, vflag);
return;
}
break;
case NFSPROC_MKNOD:
printf(" mknod");
if ((dp = parsereq(rp, length)) != 0 &&
(dp = parsefhn(dp, v3)) != 0) {
TCHECK(*dp);
type = (nfs_type)ntohl(*dp++);
if ((dp = parse_sattr3(dp, &sa3)) == 0)
break;
printf(" %s", tok2str(type2str, "unk-ft %d", type));
if (vflag && (type == NFCHR || type == NFBLK)) {
TCHECK(dp[1]);
printf(" %u/%u",
(u_int32_t)ntohl(dp[0]),
(u_int32_t)ntohl(dp[1]));
dp += 2;
}
if (vflag)
print_sattr3(&sa3, vflag);
return;
}
break;
case NFSPROC_REMOVE:
printf(" remove");
if ((dp = parsereq(rp, length)) != NULL &&
parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_RMDIR:
printf(" rmdir");
if ((dp = parsereq(rp, length)) != NULL &&
parsefhn(dp, v3) != NULL)
return;
break;
case NFSPROC_RENAME:
printf(" rename");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefhn(dp, v3)) != NULL) {
fputs(" ->", stdout);
if (parsefhn(dp, v3) != NULL)
return;
}
break;
case NFSPROC_LINK:
printf(" link");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
fputs(" ->", stdout);
if (parsefhn(dp, v3) != NULL)
return;
}
break;
case NFSPROC_READDIR:
printf(" readdir");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
if (v3) {
TCHECK(dp[4]);
/*
* We shouldn't really try to interpret the
* offset cookie here.
*/
printf(" %u bytes @ ",
(u_int32_t) ntohl(dp[4]));
print_int64(dp, SIGNED);
if (vflag)
printf(" verf %08x%08x", dp[2],
dp[3]);
} else {
TCHECK(dp[1]);
/*
* Print the offset as signed, since -1 is
* common, but offsets > 2^31 aren't.
*/
printf(" %u bytes @ %d",
(u_int32_t)ntohl(dp[1]),
(u_int32_t)ntohl(dp[0]));
}
return;
}
break;
case NFSPROC_READDIRPLUS:
printf(" readdirplus");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
TCHECK(dp[4]);
/*
* We don't try to interpret the offset
* cookie here.
*/
printf(" %u bytes @ ", (u_int32_t) ntohl(dp[4]));
print_int64(dp, SIGNED);
if (vflag)
printf(" max %u verf %08x%08x",
(u_int32_t) ntohl(dp[5]), dp[2], dp[3]);
return;
}
break;
case NFSPROC_FSSTAT:
printf(" fsstat");
if ((dp = parsereq(rp, length)) != NULL &&
parsefh(dp, v3) != NULL)
return;
break;
case NFSPROC_FSINFO:
printf(" fsinfo");
break;
case NFSPROC_PATHCONF:
printf(" pathconf");
break;
case NFSPROC_COMMIT:
printf(" commit");
if ((dp = parsereq(rp, length)) != NULL &&
(dp = parsefh(dp, v3)) != NULL) {
printf(" %u bytes @ ", (u_int32_t) ntohl(dp[2]));
print_int64(dp, UNSIGNED);
return;
}
break;
default:
printf(" proc-%u", (u_int32_t)ntohl(rp->rm_call.cb_proc));
return;
}
trunc:
if (!nfserr)
fputs(" [|nfs]", stdout);
}
/*
* Print out an NFS file handle.
* We assume packet was not truncated before the end of the
* file handle pointed to by dp.
*
* Note: new version (using portable file-handle parser) doesn't produce
* generation number. It probably could be made to do that, with some
* additional hacking on the parser code.
*/
static void
nfs_printfh(register const u_int32_t *dp, const u_int len)
{
my_fsid fsid;
ino_t ino;
char *sfsname = NULL;
Parse_fh((caddr_t*)dp, len, &fsid, &ino, NULL, &sfsname, 0);
if (sfsname) {
/* file system ID is ASCII, not numeric, for this server OS */
static char temp[NFSX_V3FHMAX+1];
/* Make sure string is null-terminated */
strncpy(temp, sfsname, NFSX_V3FHMAX);
temp[sizeof(temp) - 1] = '\0';
/* Remove trailing spaces */
sfsname = strchr(temp, ' ');
if (sfsname)
*sfsname = 0;
(void)printf(" fh %s/", temp);
} else {
(void)printf(" fh %d,%d/",
fsid.Fsid_dev.Major, fsid.Fsid_dev.Minor);
}
if(fsid.Fsid_dev.Minor == 257 && uflag)
/* Print the undecoded handle */
(void)printf("%s", fsid.Opaque_Handle);
else
(void)printf("%ld", (long) ino);
}
/*
* Maintain a small cache of recent client.XID.server/proc pairs, to allow
* us to match up replies with requests and thus to know how to parse
* the reply.
*/
struct xid_map_entry {
u_int32_t xid; /* transaction ID (net order) */
int ipver; /* IP version (4 or 6) */
#ifdef INET6
struct in6_addr client; /* client IP address (net order) */
struct in6_addr server; /* server IP address (net order) */
#else
struct in_addr client; /* client IP address (net order) */
struct in_addr server; /* server IP address (net order) */
#endif
u_int32_t proc; /* call proc number (host order) */
u_int32_t vers; /* program version (host order) */
};
/*
* Map entries are kept in an array that we manage as a ring;
* new entries are always added at the tail of the ring. Initially,
* all the entries are zero and hence don't match anything.
*/
#define XIDMAPSIZE 64
struct xid_map_entry xid_map[XIDMAPSIZE];
int xid_map_next = 0;
int xid_map_hint = 0;
static void
xid_map_enter(const struct rpc_msg *rp, const u_char *bp)
{
struct ip *ip = NULL;
#ifdef INET6
struct ip6_hdr *ip6 = NULL;
#endif
struct xid_map_entry *xmep;
switch (IP_V((struct ip *)bp)) {
case 4:
ip = (struct ip *)bp;
break;
#ifdef INET6
case 6:
ip6 = (struct ip6_hdr *)bp;
break;
#endif
default:
return;
}
xmep = &xid_map[xid_map_next];
if (++xid_map_next >= XIDMAPSIZE)
xid_map_next = 0;
xmep->xid = rp->rm_xid;
if (ip) {
xmep->ipver = 4;
memcpy(&xmep->client, &ip->ip_src, sizeof(ip->ip_src));
memcpy(&xmep->server, &ip->ip_dst, sizeof(ip->ip_dst));
}
#ifdef INET6
else if (ip6) {
xmep->ipver = 6;
memcpy(&xmep->client, &ip6->ip6_src, sizeof(ip6->ip6_src));
memcpy(&xmep->server, &ip6->ip6_dst, sizeof(ip6->ip6_dst));
}
#endif
xmep->proc = ntohl(rp->rm_call.cb_proc);
xmep->vers = ntohl(rp->rm_call.cb_vers);
}
/*
* Returns 0 and puts NFSPROC_xxx in proc return and
* version in vers return, or returns -1 on failure
*/
static int
xid_map_find(const struct rpc_msg *rp, const u_char *bp, u_int32_t *proc,
u_int32_t *vers)
{
int i;
struct xid_map_entry *xmep;
u_int32_t xid = rp->rm_xid;
struct ip *ip = (struct ip *)bp;
#ifdef INET6
struct ip6_hdr *ip6 = (struct ip6_hdr *)bp;
#endif
int cmp;
/* Start searching from where we last left off */
i = xid_map_hint;
do {
xmep = &xid_map[i];
cmp = 1;
if (xmep->ipver != IP_V(ip) || xmep->xid != xid)
goto nextitem;
switch (xmep->ipver) {
case 4:
if (memcmp(&ip->ip_src, &xmep->server,
sizeof(ip->ip_src)) != 0 ||
memcmp(&ip->ip_dst, &xmep->client,
sizeof(ip->ip_dst)) != 0) {
cmp = 0;
}
break;
#ifdef INET6
case 6:
if (memcmp(&ip6->ip6_src, &xmep->server,
sizeof(ip6->ip6_src)) != 0 ||
memcmp(&ip6->ip6_dst, &xmep->client,
sizeof(ip6->ip6_dst)) != 0) {
cmp = 0;
}
break;
#endif
default:
cmp = 0;
break;
}
if (cmp) {
/* match */
xid_map_hint = i;
*proc = xmep->proc;
*vers = xmep->vers;
return 0;
}
nextitem:
if (++i >= XIDMAPSIZE)
i = 0;
} while (i != xid_map_hint);
/* search failed */
return (-1);
}
/*
* Routines for parsing reply packets
*/
/*
* Return a pointer to the beginning of the actual results.
* If the packet was truncated, return 0.
*/
static const u_int32_t *
parserep(register const struct rpc_msg *rp, register u_int length)
{
register const u_int32_t *dp;
u_int len;
enum accept_stat astat;
/*
* Portability note:
* Here we find the address of the ar_verf credentials.
* Originally, this calculation was
* dp = (u_int32_t *)&rp->rm_reply.rp_acpt.ar_verf
* On the wire, the rp_acpt field starts immediately after
* the (32 bit) rp_stat field. However, rp_acpt (which is a
* "struct accepted_reply") contains a "struct opaque_auth",
* whose internal representation contains a pointer, so on a
* 64-bit machine the compiler inserts 32 bits of padding
* before rp->rm_reply.rp_acpt.ar_verf. So, we cannot use
* the internal representation to parse the on-the-wire
* representation. Instead, we skip past the rp_stat field,
* which is an "enum" and so occupies one 32-bit word.
*/
dp = ((const u_int32_t *)&rp->rm_reply) + 1;
TCHECK(dp[1]);
len = ntohl(dp[1]);
if (len >= length)
return (NULL);
/*
* skip past the ar_verf credentials.
*/
dp += (len + (2*sizeof(u_int32_t) + 3)) / sizeof(u_int32_t);
TCHECK2(dp[0], 0);
/*
* now we can check the ar_stat field
*/
astat = ntohl(*(enum accept_stat *)dp);
switch (astat) {
case SUCCESS:
break;
case PROG_UNAVAIL:
printf(" PROG_UNAVAIL");
nfserr = 1; /* suppress trunc string */
return (NULL);
case PROG_MISMATCH:
printf(" PROG_MISMATCH");
nfserr = 1; /* suppress trunc string */
return (NULL);
case PROC_UNAVAIL:
printf(" PROC_UNAVAIL");
nfserr = 1; /* suppress trunc string */
return (NULL);
case GARBAGE_ARGS:
printf(" GARBAGE_ARGS");
nfserr = 1; /* suppress trunc string */
return (NULL);
case SYSTEM_ERR:
printf(" SYSTEM_ERR");
nfserr = 1; /* suppress trunc string */
return (NULL);
default:
printf(" ar_stat %d", astat);
nfserr = 1; /* suppress trunc string */
return (NULL);
}
/* successful return */
TCHECK2(*dp, sizeof(astat));
return ((u_int32_t *) (sizeof(astat) + ((char *)dp)));
trunc:
return (0);
}
static const u_int32_t *
parsestatus(const u_int32_t *dp, int *er)
{
int errnum;
TCHECK(dp[0]);
errnum = ntohl(dp[0]);
if (er)
*er = errnum;
if (errnum != 0) {
if (!qflag)
printf(" ERROR: %s",
tok2str(status2str, "unk %d", errnum));
nfserr = 1;
return (NULL);
}
return (dp + 1);
trunc:
return NULL;
}
static const u_int32_t *
parsefattr(const u_int32_t *dp, int verbose, int v3)
{
const struct nfs_fattr *fap;
fap = (const struct nfs_fattr *)dp;
TCHECK(fap->fa_gid);
if (verbose) {
printf(" %s %o ids %d/%d",
tok2str(type2str, "unk-ft %d ",
(u_int32_t)ntohl(fap->fa_type)),
(u_int32_t)ntohl(fap->fa_mode),
(u_int32_t)ntohl(fap->fa_uid),
(u_int32_t) ntohl(fap->fa_gid));
if (v3) {
TCHECK(fap->fa3_size);
printf(" sz ");
print_int64((u_int32_t *)&fap->fa3_size, UNSIGNED);
putchar(' ');
} else {
TCHECK(fap->fa2_size);
printf(" sz %d ", (u_int32_t) ntohl(fap->fa2_size));
}
}
/* print lots more stuff */
if (verbose > 1) {
if (v3) {
TCHECK(fap->fa3_ctime);
printf("nlink %d rdev %d/%d ",
(u_int32_t)ntohl(fap->fa_nlink),
(u_int32_t) ntohl(fap->fa3_rdev.specdata1),
(u_int32_t) ntohl(fap->fa3_rdev.specdata2));
printf("fsid ");
print_int64((u_int32_t *)&fap->fa2_fsid, HEX);
printf(" nodeid ");
print_int64((u_int32_t *)&fap->fa2_fileid, HEX);
printf(" a/m/ctime %u.%06u ",
(u_int32_t) ntohl(fap->fa3_atime.nfsv3_sec),
(u_int32_t) ntohl(fap->fa3_atime.nfsv3_nsec));
printf("%u.%06u ",
(u_int32_t) ntohl(fap->fa3_mtime.nfsv3_sec),
(u_int32_t) ntohl(fap->fa3_mtime.nfsv3_nsec));
printf("%u.%06u ",
(u_int32_t) ntohl(fap->fa3_ctime.nfsv3_sec),
(u_int32_t) ntohl(fap->fa3_ctime.nfsv3_nsec));
} else {
TCHECK(fap->fa2_ctime);
printf("nlink %d rdev %x fsid %x nodeid %x a/m/ctime ",
(u_int32_t) ntohl(fap->fa_nlink),
(u_int32_t) ntohl(fap->fa2_rdev),
(u_int32_t) ntohl(fap->fa2_fsid),
(u_int32_t) ntohl(fap->fa2_fileid));
printf("%u.%06u ",
(u_int32_t) ntohl(fap->fa2_atime.nfsv2_sec),
(u_int32_t) ntohl(fap->fa2_atime.nfsv2_usec));
printf("%u.%06u ",
(u_int32_t) ntohl(fap->fa2_mtime.nfsv2_sec),
(u_int32_t) ntohl(fap->fa2_mtime.nfsv2_usec));
printf("%u.%06u ",
(u_int32_t) ntohl(fap->fa2_ctime.nfsv2_sec),
(u_int32_t) ntohl(fap->fa2_ctime.nfsv2_usec));
}
}
return ((const u_int32_t *)((unsigned char *)dp +
(v3 ? NFSX_V3FATTR : NFSX_V2FATTR)));
trunc:
return (NULL);
}
static int
parseattrstat(const u_int32_t *dp, int verbose, int v3)
{
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || er)
return (0);
return (parsefattr(dp, verbose, v3) != NULL);
}
static int
parsediropres(const u_int32_t *dp)
{
int er;
if (!(dp = parsestatus(dp, &er)) || er)
return (0);
dp = parsefh(dp, 0);
if (dp == NULL)
return (0);
return (parsefattr(dp, vflag, 0) != NULL);
}
static int
parselinkres(const u_int32_t *dp, int v3)
{
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || er)
return(0);
if (v3 && !(dp = parse_post_op_attr(dp, vflag)))
return (0);
putchar(' ');
return (parsefn(dp) != NULL);
}
static int
parsestatfs(const u_int32_t *dp, int v3)
{
const struct nfs_statfs *sfsp;
int er;
dp = parsestatus(dp, &er);
if (dp == NULL || (!v3 && er))
return (0);
if (qflag)
return(1);
if (v3) {
if (vflag)
printf(" POST:");
if (!(dp = parse_post_op_attr(dp, vflag)))
return (0);
}
TCHECK2(dp, (v3 ? NFSX_V3STATFS : NFSX_V2STATFS));
sfsp = (const struct nfs_statfs *)dp;
if (v3) {
printf(" tbytes ");
print_int64((u_int32_t *)&sfsp->sf_tbytes, UNSIGNED);
printf(" fbytes ");
print_int64((u_int32_t *)&sfsp->sf_fbytes, UNSIGNED);
printf(" abytes ");
print_int64((u_int32_t *)&sfsp->sf_abytes, UNSIGNED);
if (vflag) {
printf(" tfiles ");
print_int64((u_int32_t *)&sfsp->sf_tfiles, UNSIGNED);
printf(" ffiles ");
print_int64((u_int32_t *)&sfsp->sf_ffiles, UNSIGNED);
printf(" afiles ");
print_int64((u_int32_t *)&sfsp->sf_afiles, UNSIGNED);
printf(" invar %u",
(u_int32_t) ntohl(sfsp->sf_invarsec));
}
} else {
printf(" tsize %d bsize %d blocks %d bfree %d bavail %d",
(u_int32_t)ntohl(sfsp->sf_tsize),
(u_int32_t)ntohl(sfsp->sf_bsize),
(u_int32_t)ntohl(sfsp->sf_blocks),
(u_int32_t)ntohl(sfsp->sf_bfree),
(u_int32_t)ntohl(sfsp->sf_bavail));
}
return (1);
trunc:
return (0);
}
static int
parserddires(const u_int32_t *dp)
{
int er;
dp = parsestatus(dp, &er);
if (dp == 0 || er)
return (0);
if (qflag)
return (1);
TCHECK(dp[2]);
printf(" offset %x size %d ",
(u_int32_t)ntohl(dp[0]), (u_int32_t)ntohl(dp[1]));
if (dp[2] != 0)
printf(" eof");
return (1);
trunc:
return (0);
}
static const u_int32_t *
parse_wcc_attr(const u_int32_t *dp)
{
printf(" sz ");
print_int64(dp, UNSIGNED);
printf(" mtime %u.%06u ctime %u.%06u",
(u_int32_t)ntohl(dp[2]), (u_int32_t)ntohl(dp[3]),
(u_int32_t)ntohl(dp[4]), (u_int32_t)ntohl(dp[5]));
return (dp + 6);
}
/*
* Pre operation attributes. Print only if vflag > 1.
*/
static const u_int32_t *
parse_pre_op_attr(const u_int32_t *dp, int verbose)
{
TCHECK(dp[0]);
if (!ntohl(dp[0]))
return (dp + 1);
dp++;
TCHECK2(dp, 24);
if (verbose > 1) {
return parse_wcc_attr(dp);
} else {
/* If not verbose enough, just skip over wcc_attr */
return (dp + 6);
}
trunc:
return (NULL);
}
/*
* Post operation attributes are printed if vflag >= 1
*/
static const u_int32_t *
parse_post_op_attr(const u_int32_t *dp, int verbose)
{
TCHECK(dp[0]);
if (!ntohl(dp[0]))
return (dp + 1);
dp++;
if (verbose) {
return parsefattr(dp, verbose, 1);
} else
return (dp + (NFSX_V3FATTR / sizeof (u_int32_t)));
trunc:
return (NULL);
}
static const u_int32_t *
parse_wcc_data(const u_int32_t *dp, int verbose)
{
if (verbose > 1)
printf(" PRE:");
if (!(dp = parse_pre_op_attr(dp, verbose)))
return (0);
if (verbose)
printf(" POST:");
return parse_post_op_attr(dp, verbose);
}
static const u_int32_t *
parsecreateopres(const u_int32_t *dp, int verbose)
{
int er;
if (!(dp = parsestatus(dp, &er)))
return (0);
if (er)
dp = parse_wcc_data(dp, verbose);
else {
TCHECK(dp[0]);
if (!ntohl(dp[0]))
return (dp + 1);
dp++;
if (!(dp = parsefh(dp, 1)))
return (0);
if (verbose) {
if (!(dp = parse_post_op_attr(dp, verbose)))
return (0);
if (vflag > 1) {
printf("dir attr:");
dp = parse_wcc_data(dp, verbose);
}
}
}
return (dp);
trunc:
return (NULL);
}
static int
parsewccres(const u_int32_t *dp, int verbose)
{
int er;
if (!(dp = parsestatus(dp, &er)))
return (0);
return parse_wcc_data(dp, verbose) != 0;
}
static const u_int32_t *
parsev3rddirres(const u_int32_t *dp, int verbose)
{
int er;
if (!(dp = parsestatus(dp, &er)))
return (0);
if (vflag)
printf(" POST:");
if (!(dp = parse_post_op_attr(dp, verbose)))
return (0);
if (er)
return dp;
if (vflag) {
TCHECK(dp[1]);
printf(" verf %08x%08x", dp[0], dp[1]);
dp += 2;
}
return dp;
trunc:
return (NULL);
}
static int
parsefsinfo(const u_int32_t *dp)
{
struct nfsv3_fsinfo *sfp;
int er;
if (!(dp = parsestatus(dp, &er)))
return (0);
if (vflag)
printf(" POST:");
if (!(dp = parse_post_op_attr(dp, vflag)))
return (0);
if (er)
return (1);
sfp = (struct nfsv3_fsinfo *)dp;
TCHECK(*sfp);
printf(" rtmax %u rtpref %u wtmax %u wtpref %u dtpref %u",
(u_int32_t) ntohl(sfp->fs_rtmax),
(u_int32_t) ntohl(sfp->fs_rtpref),
(u_int32_t) ntohl(sfp->fs_wtmax),
(u_int32_t) ntohl(sfp->fs_wtpref),
(u_int32_t) ntohl(sfp->fs_dtpref));
if (vflag) {
printf(" rtmult %u wtmult %u maxfsz ",
(u_int32_t) ntohl(sfp->fs_rtmult),
(u_int32_t) ntohl(sfp->fs_wtmult));
print_int64((u_int32_t *)&sfp->fs_maxfilesize, UNSIGNED);
printf(" delta %u.%06u ",
(u_int32_t) ntohl(sfp->fs_timedelta.nfsv3_sec),
(u_int32_t) ntohl(sfp->fs_timedelta.nfsv3_nsec));
}
return (0);
trunc:
return (1);
}
static int
parsepathconf(const u_int32_t *dp)
{
int er;
struct nfsv3_pathconf *spp;
if (!(dp = parsestatus(dp, &er)))
return (0);
if (vflag)
printf(" POST:");
if (!(dp = parse_post_op_attr(dp, vflag)))
return (0);
if (er)
return (1);
spp = (struct nfsv3_pathconf *)dp;
TCHECK(*spp);
printf(" linkmax %u namemax %u %s %s %s %s",
(u_int32_t) ntohl(spp->pc_linkmax),
(u_int32_t) ntohl(spp->pc_namemax),
ntohl(spp->pc_notrunc) ? "notrunc" : "",
ntohl(spp->pc_chownrestricted) ? "chownres" : "",
ntohl(spp->pc_caseinsensitive) ? "igncase" : "",
ntohl(spp->pc_casepreserving) ? "keepcase" : "");
return (0);
trunc:
return (1);
}
static void
interp_reply(const struct rpc_msg *rp, u_int32_t proc, u_int32_t vers, int length)
{
register const u_int32_t *dp;
register int v3;
int er;
v3 = (vers == NFS_VER3);
if (!v3 && proc < NFS_NPROCS)
proc = nfsv3_procid[proc];
switch (proc) {
case NFSPROC_NOOP:
printf(" nop");
return;
case NFSPROC_NULL:
printf(" null");
return;
case NFSPROC_GETATTR:
printf(" getattr");
dp = parserep(rp, length);
if (dp != NULL && parseattrstat(dp, !qflag, v3) != 0)
return;
break;
case NFSPROC_SETATTR:
printf(" setattr");
if (!(dp = parserep(rp, length)))
return;
if (v3) {
if (parsewccres(dp, vflag))
return;
} else {
if (parseattrstat(dp, !qflag, 0) != 0)
return;
}
break;
case NFSPROC_LOOKUP:
printf(" lookup");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (!(dp = parsestatus(dp, &er)))
break;
if (er) {
if (vflag > 1) {
printf(" post dattr:");
dp = parse_post_op_attr(dp, vflag);
}
} else {
if (!(dp = parsefh(dp, v3)))
break;
if ((dp = parse_post_op_attr(dp, vflag)) &&
vflag > 1) {
printf(" post dattr:");
dp = parse_post_op_attr(dp, vflag);
}
}
if (dp)
return;
} else {
if (parsediropres(dp) != 0)
return;
}
break;
case NFSPROC_ACCESS:
printf(" access");
dp = parserep(rp, length);
if (!(dp = parsestatus(dp, &er)))
break;
if (vflag)
printf(" attr:");
if (!(dp = parse_post_op_attr(dp, vflag)))
break;
if (!er)
printf(" c %04x", (u_int32_t)ntohl(dp[0]));
return;
case NFSPROC_READLINK:
printf(" readlink");
dp = parserep(rp, length);
if (dp != NULL && parselinkres(dp, v3) != 0)
return;
break;
case NFSPROC_READ:
printf(" read");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (!(dp = parsestatus(dp, &er)))
break;
if (!(dp = parse_post_op_attr(dp, vflag)))
break;
if (er)
return;
if (vflag) {
TCHECK(dp[1]);
printf("%u bytes", (u_int32_t) ntohl(dp[0]));
if (ntohl(dp[1]))
printf(" EOF");
}
return;
} else {
if (parseattrstat(dp, vflag, 0) != 0)
return;
}
break;
case NFSPROC_WRITE:
printf(" write");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (!(dp = parsestatus(dp, &er)))
break;
if (!(dp = parse_wcc_data(dp, vflag)))
break;
if (er)
return;
if (vflag) {
TCHECK(dp[0]);
printf("%u bytes", (u_int32_t) ntohl(dp[0]));
if (vflag > 1) {
TCHECK(dp[1]);
printf(" <%s>",
tok2str(nfsv3_writemodes,
NULL, ntohl(dp[1])));
}
return;
}
} else {
if (parseattrstat(dp, vflag, v3) != 0)
return;
}
break;
case NFSPROC_CREATE:
printf(" create");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (parsecreateopres(dp, vflag) != 0)
return;
} else {
if (parsediropres(dp) != 0)
return;
}
break;
case NFSPROC_MKDIR:
printf(" mkdir");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (parsecreateopres(dp, vflag) != 0)
return;
} else {
if (parsediropres(dp) != 0)
return;
}
break;
case NFSPROC_SYMLINK:
printf(" symlink");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (parsecreateopres(dp, vflag) != 0)
return;
} else {
if (parsestatus(dp, &er) != 0)
return;
}
break;
case NFSPROC_MKNOD:
printf(" mknod");
if (!(dp = parserep(rp, length)))
break;
if (parsecreateopres(dp, vflag) != 0)
return;
break;
case NFSPROC_REMOVE:
printf(" remove");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (parsewccres(dp, vflag))
return;
} else {
if (parsestatus(dp, &er) != 0)
return;
}
break;
case NFSPROC_RMDIR:
printf(" rmdir");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (parsewccres(dp, vflag))
return;
} else {
if (parsestatus(dp, &er) != 0)
return;
}
break;
case NFSPROC_RENAME:
printf(" rename");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (!(dp = parsestatus(dp, &er)))
break;
if (vflag) {
printf(" from:");
if (!(dp = parse_wcc_data(dp, vflag)))
break;
printf(" to:");
if (!(dp = parse_wcc_data(dp, vflag)))
break;
}
return;
} else {
if (parsestatus(dp, &er) != 0)
return;
}
break;
case NFSPROC_LINK:
printf(" link");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (!(dp = parsestatus(dp, &er)))
break;
if (vflag) {
printf(" file POST:");
if (!(dp = parse_post_op_attr(dp, vflag)))
break;
printf(" dir:");
if (!(dp = parse_wcc_data(dp, vflag)))
break;
return;
}
} else {
if (parsestatus(dp, &er) != 0)
return;
}
break;
case NFSPROC_READDIR:
printf(" readdir");
if (!(dp = parserep(rp, length)))
break;
if (v3) {
if (parsev3rddirres(dp, vflag))
return;
} else {
if (parserddires(dp) != 0)
return;
}
break;
case NFSPROC_READDIRPLUS:
printf(" readdirplus");
if (!(dp = parserep(rp, length)))
break;
if (parsev3rddirres(dp, vflag))
return;
break;
case NFSPROC_FSSTAT:
printf(" fsstat");
dp = parserep(rp, length);
if (dp != NULL && parsestatfs(dp, v3) != 0)
return;
break;
case NFSPROC_FSINFO:
printf(" fsinfo");
dp = parserep(rp, length);
if (dp != NULL && parsefsinfo(dp) != 0)
return;
break;
case NFSPROC_PATHCONF:
printf(" pathconf");
dp = parserep(rp, length);
if (dp != NULL && parsepathconf(dp) != 0)
return;
break;
case NFSPROC_COMMIT:
printf(" commit");
dp = parserep(rp, length);
if (dp != NULL && parsewccres(dp, vflag) != 0)
return;
break;
default:
printf(" proc-%u", proc);
return;
}
trunc:
if (!nfserr)
fputs(" [|nfs]", stdout);
}
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