[PATCH v3 8/9] nfsdcltrack: remove the nfsdcld daemon

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Since we want to move to using the usermodehelper upcall
unconditionally, just remove nfsdcld. The kernel code to handle
this will be formally deprecated in 3.10 as well.

Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
 utils/nfsdcltrack/Makefile.am |   7 +-
 utils/nfsdcltrack/nfsdcld.c   | 607 ------------------------------------------
 utils/nfsdcltrack/nfsdcld.man | 185 -------------
 3 files changed, 2 insertions(+), 797 deletions(-)
 delete mode 100644 utils/nfsdcltrack/nfsdcld.c
 delete mode 100644 utils/nfsdcltrack/nfsdcld.man

diff --git a/utils/nfsdcltrack/Makefile.am b/utils/nfsdcltrack/Makefile.am
index 1746a25..a860ffb 100644
--- a/utils/nfsdcltrack/Makefile.am
+++ b/utils/nfsdcltrack/Makefile.am
@@ -1,13 +1,10 @@
 ## Process this file with automake to produce Makefile.in
 
-man8_MANS	= nfsdcld.man nfsdcltrack.man
+man8_MANS	= nfsdcltrack.man
 EXTRA_DIST	= $(man8_MANS)
 
 AM_CFLAGS	+= -D_LARGEFILE64_SOURCE
-sbin_PROGRAMS	= nfsdcld nfsdcltrack
-
-nfsdcld_SOURCES = nfsdcld.c sqlite.c
-nfsdcld_LDADD = ../../support/nfs/libnfs.a $(LIBEVENT) $(LIBSQLITE) $(LIBCAP)
+sbin_PROGRAMS	= nfsdcltrack
 
 nfsdcltrack_SOURCES = nfsdcltrack.c sqlite.c
 nfsdcltrack_LDADD = ../../support/nfs/libnfs.a $(LIBSQLITE) $(LIBCAP)
diff --git a/utils/nfsdcltrack/nfsdcld.c b/utils/nfsdcltrack/nfsdcld.c
deleted file mode 100644
index 473d069..0000000
--- a/utils/nfsdcltrack/nfsdcld.c
+++ /dev/null
@@ -1,607 +0,0 @@
-/*
- * nfsdcld.c -- NFSv4 client name tracking daemon
- *
- * Copyright (C) 2011  Red Hat, Jeff Layton <jlayton@xxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include <errno.h>
-#include <event.h>
-#include <stdbool.h>
-#include <getopt.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <libgen.h>
-#include <sys/inotify.h>
-#ifdef HAVE_SYS_CAPABILITY_H
-#include <sys/prctl.h>
-#include <sys/capability.h>
-#endif
-
-#include "xlog.h"
-#include "nfslib.h"
-#include "cld.h"
-#include "sqlite.h"
-
-#ifndef PIPEFS_DIR
-#define PIPEFS_DIR NFS_STATEDIR "/rpc_pipefs"
-#endif
-
-#define DEFAULT_CLD_PATH	PIPEFS_DIR "/nfsd/cld"
-
-#ifndef CLD_DEFAULT_STORAGEDIR
-#define CLD_DEFAULT_STORAGEDIR NFS_STATEDIR "/nfsdcld"
-#endif
-
-#define UPCALL_VERSION		1
-
-/* private data structures */
-struct cld_client {
-	int			cl_fd;
-	struct event		cl_event;
-	struct cld_msg	cl_msg;
-};
-
-/* global variables */
-static char *pipepath = DEFAULT_CLD_PATH;
-static int 		inotify_fd = -1;
-static struct event	pipedir_event;
-
-static struct option longopts[] =
-{
-	{ "help", 0, NULL, 'h' },
-	{ "foreground", 0, NULL, 'F' },
-	{ "debug", 0, NULL, 'd' },
-	{ "pipe", 1, NULL, 'p' },
-	{ "storagedir", 1, NULL, 's' },
-	{ NULL, 0, 0, 0 },
-};
-
-/* forward declarations */
-static void cldcb(int UNUSED(fd), short which, void *data);
-
-static void
-usage(char *progname)
-{
-	printf("%s [ -hFd ] [ -p pipe ] [ -s dir ]\n", progname);
-}
-
-static int
-cld_set_caps(void)
-{
-	int ret = 0;
-#ifdef HAVE_SYS_CAPABILITY_H
-	unsigned long i;
-	cap_t caps;
-
-	if (getuid() != 0) {
-		xlog(L_ERROR, "Not running as root. Daemon won't be able to "
-			      "open the pipe after dropping capabilities!");
-		return -EINVAL;
-	}
-
-	/* prune the bounding set to nothing */
-	for (i = 0; prctl(PR_CAPBSET_READ, i, 0, 0, 0) >= 0 ; ++i) {
-		ret = prctl(PR_CAPBSET_DROP, i, 0, 0, 0);
-		if (ret) {
-			xlog(L_ERROR, "Unable to prune capability %lu from "
-				      "bounding set: %m", i);
-			return -errno;
-		}
-	}
-
-	/* get a blank capset */
-	caps = cap_init();
-	if (caps == NULL) {
-		xlog(L_ERROR, "Unable to get blank capability set: %m");
-		return -errno;
-	}
-
-	/* reset the process capabilities */
-	if (cap_set_proc(caps) != 0) {
-		xlog(L_ERROR, "Unable to set process capabilities: %m");
-		ret = -errno;
-	}
-	cap_free(caps);
-#endif
-	return ret;
-}
-
-#define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX)
-
-static int
-cld_pipe_open(struct cld_client *clnt)
-{
-	int fd;
-
-	xlog(D_GENERAL, "%s: opening upcall pipe %s", __func__, pipepath);
-	fd = open(pipepath, O_RDWR, 0);
-	if (fd < 0) {
-		xlog(D_GENERAL, "%s: open of %s failed: %m", __func__, pipepath);
-		return -errno;
-	}
-
-	if (clnt->cl_event.ev_flags & EVLIST_INIT)
-		event_del(&clnt->cl_event);
-	if (clnt->cl_fd >= 0)
-		close(clnt->cl_fd);
-
-	clnt->cl_fd = fd;
-	event_set(&clnt->cl_event, clnt->cl_fd, EV_READ, cldcb, clnt);
-	/* event_add is done by the caller */
-	return 0;
-}
-
-static void
-cld_inotify_cb(int UNUSED(fd), short which, void *data)
-{
-	int ret;
-	size_t elen;
-	ssize_t rret;
-	char evbuf[INOTIFY_EVENT_MAX];
-	char *dirc = NULL, *pname;
-	struct inotify_event *event = (struct inotify_event *)evbuf;
-	struct cld_client *clnt = data;
-
-	if (which != EV_READ)
-		return;
-
-	xlog(D_GENERAL, "%s: called for EV_READ", __func__);
-
-	dirc = strndup(pipepath, PATH_MAX);
-	if (!dirc) {
-		xlog(L_ERROR, "%s: unable to allocate memory", __func__);
-		goto out;
-	}
-
-	rret = read(inotify_fd, evbuf, INOTIFY_EVENT_MAX);
-	if (rret < 0) {
-		xlog(L_ERROR, "%s: read from inotify fd failed: %m", __func__);
-		goto out;
-	}
-
-	/* check to see if we have a filename in the evbuf */
-	if (!event->len) {
-		xlog(D_GENERAL, "%s: no filename in inotify event", __func__);
-		goto out;
-	}
-
-	pname = basename(dirc);
-	elen = strnlen(event->name, event->len);
-
-	/* does the filename match our pipe? */
-	if (strlen(pname) != elen || memcmp(pname, event->name, elen)) {
-		xlog(D_GENERAL, "%s: wrong filename (%s)", __func__,
-				event->name);
-		goto out;
-	}
-
-	ret = cld_pipe_open(clnt);
-	switch (ret) {
-	case 0:
-		/* readd the event for the cl_event pipe */
-		event_add(&clnt->cl_event, NULL);
-		break;
-	case -ENOENT:
-		/* pipe must have disappeared, wait for it to come back */
-		goto out;
-	default:
-		/* anything else is fatal */
-		xlog(L_FATAL, "%s: unable to open new pipe (%d). Aborting.",
-			ret, __func__);
-		exit(ret);
-	}
-
-out:
-	event_add(&pipedir_event, NULL);
-	free(dirc);
-}
-
-static int
-cld_inotify_setup(void)
-{
-	int ret;
-	char *dirc, *dname;
-
-	dirc = strndup(pipepath, PATH_MAX);
-	if (!dirc) {
-		xlog_err("%s: unable to allocate memory", __func__);
-		ret = -ENOMEM;
-		goto out_free;
-	}
-
-	dname = dirname(dirc);
-
-	inotify_fd = inotify_init();
-	if (inotify_fd < 0) {
-		xlog_err("%s: inotify_init failed: %m", __func__);
-		ret = -errno;
-		goto out_free;
-	}
-
-	ret = inotify_add_watch(inotify_fd, dname, IN_CREATE);
-	if (ret < 0) {
-		xlog_err("%s: inotify_add_watch failed: %m", __func__);
-		ret = -errno;
-		goto out_err;
-	}
-
-out_free:
-	free(dirc);
-	return 0;
-out_err:
-	close(inotify_fd);
-	goto out_free;
-}
-
-/*
- * Set an inotify watch on the directory that should contain the pipe, and then
- * try to open it. If it fails with anything but -ENOENT, return the error
- * immediately.
- *
- * If it succeeds, then set up the pipe event handler. At that point, set up
- * the inotify event handler and go ahead and return success.
- */
-static int
-cld_pipe_init(struct cld_client *clnt)
-{
-	int ret;
-
-	xlog(D_GENERAL, "%s: init pipe handlers", __func__);
-
-	ret = cld_inotify_setup();
-	if (ret != 0)
-		goto out;
-
-	clnt->cl_fd = -1;
-	ret = cld_pipe_open(clnt);
-	switch (ret) {
-	case 0:
-		/* add the event and we're good to go */
-		event_add(&clnt->cl_event, NULL);
-		break;
-	case -ENOENT:
-		/* ignore this error -- cld_inotify_cb will handle it */
-		ret = 0;
-		break;
-	default:
-		/* anything else is fatal */
-		close(inotify_fd);
-		goto out;
-	}
-
-	/* set event for inotify read */
-	event_set(&pipedir_event, inotify_fd, EV_READ, cld_inotify_cb, clnt);
-	event_add(&pipedir_event, NULL);
-out:
-	return ret;
-}
-
-static void
-cld_not_implemented(struct cld_client *clnt)
-{
-	int ret;
-	ssize_t bsize, wsize;
-	struct cld_msg *cmsg = &clnt->cl_msg;
-
-	xlog(D_GENERAL, "%s: downcalling with not implemented error", __func__);
-
-	/* set up reply */
-	cmsg->cm_status = -EOPNOTSUPP;
-
-	bsize = sizeof(*cmsg);
-
-	wsize = atomicio((void *)write, clnt->cl_fd, cmsg, bsize);
-	if (wsize != bsize)
-		xlog(L_ERROR, "%s: problem writing to cld pipe (%ld): %m",
-			 __func__, wsize);
-
-	/* reopen pipe, just to be sure */
-	ret = cld_pipe_open(clnt);
-	if (ret) {
-		xlog(L_FATAL, "%s: unable to reopen pipe: %d", __func__, ret);
-		exit(ret);
-	}
-}
-
-static void
-cld_create(struct cld_client *clnt)
-{
-	int ret;
-	ssize_t bsize, wsize;
-	struct cld_msg *cmsg = &clnt->cl_msg;
-
-	xlog(D_GENERAL, "%s: create client record.", __func__);
-
-	ret = sqlite_insert_client(cmsg->cm_u.cm_name.cn_id,
-				   cmsg->cm_u.cm_name.cn_len);
-
-	cmsg->cm_status = ret ? -EREMOTEIO : ret;
-
-	bsize = sizeof(*cmsg);
-
-	xlog(D_GENERAL, "Doing downcall with status %d", cmsg->cm_status);
-	wsize = atomicio((void *)write, clnt->cl_fd, cmsg, bsize);
-	if (wsize != bsize) {
-		xlog(L_ERROR, "%s: problem writing to cld pipe (%ld): %m",
-			 __func__, wsize);
-		ret = cld_pipe_open(clnt);
-		if (ret) {
-			xlog(L_FATAL, "%s: unable to reopen pipe: %d",
-					__func__, ret);
-			exit(ret);
-		}
-	}
-}
-
-static void
-cld_remove(struct cld_client *clnt)
-{
-	int ret;
-	ssize_t bsize, wsize;
-	struct cld_msg *cmsg = &clnt->cl_msg;
-
-	xlog(D_GENERAL, "%s: remove client record.", __func__);
-
-	ret = sqlite_remove_client(cmsg->cm_u.cm_name.cn_id,
-				   cmsg->cm_u.cm_name.cn_len);
-
-	cmsg->cm_status = ret ? -EREMOTEIO : ret;
-
-	bsize = sizeof(*cmsg);
-
-	xlog(D_GENERAL, "%s: downcall with status %d", __func__,
-			cmsg->cm_status);
-	wsize = atomicio((void *)write, clnt->cl_fd, cmsg, bsize);
-	if (wsize != bsize) {
-		xlog(L_ERROR, "%s: problem writing to cld pipe (%ld): %m",
-			 __func__, wsize);
-		ret = cld_pipe_open(clnt);
-		if (ret) {
-			xlog(L_FATAL, "%s: unable to reopen pipe: %d",
-					__func__, ret);
-			exit(ret);
-		}
-	}
-}
-
-static void
-cld_check(struct cld_client *clnt)
-{
-	int ret;
-	ssize_t bsize, wsize;
-	struct cld_msg *cmsg = &clnt->cl_msg;
-
-	xlog(D_GENERAL, "%s: check client record", __func__);
-
-	ret = sqlite_check_client(cmsg->cm_u.cm_name.cn_id,
-				  cmsg->cm_u.cm_name.cn_len);
-
-	/* set up reply */
-	cmsg->cm_status = ret ? -EACCES : ret;
-
-	bsize = sizeof(*cmsg);
-
-	xlog(D_GENERAL, "%s: downcall with status %d", __func__,
-			cmsg->cm_status);
-	wsize = atomicio((void *)write, clnt->cl_fd, cmsg, bsize);
-	if (wsize != bsize) {
-		xlog(L_ERROR, "%s: problem writing to cld pipe (%ld): %m",
-			 __func__, wsize);
-		ret = cld_pipe_open(clnt);
-		if (ret) {
-			xlog(L_FATAL, "%s: unable to reopen pipe: %d",
-					__func__, ret);
-			exit(ret);
-		}
-	}
-}
-
-static void
-cld_gracedone(struct cld_client *clnt)
-{
-	int ret;
-	ssize_t bsize, wsize;
-	struct cld_msg *cmsg = &clnt->cl_msg;
-
-	xlog(D_GENERAL, "%s: grace done. cm_gracetime=%ld", __func__,
-			cmsg->cm_u.cm_gracetime);
-
-	ret = sqlite_remove_unreclaimed(cmsg->cm_u.cm_gracetime);
-
-	/* set up reply: downcall with 0 status */
-	cmsg->cm_status = ret ? -EREMOTEIO : ret;
-
-	bsize = sizeof(*cmsg);
-
-	xlog(D_GENERAL, "Doing downcall with status %d", cmsg->cm_status);
-	wsize = atomicio((void *)write, clnt->cl_fd, cmsg, bsize);
-	if (wsize != bsize) {
-		xlog(L_ERROR, "%s: problem writing to cld pipe (%ld): %m",
-			 __func__, wsize);
-		ret = cld_pipe_open(clnt);
-		if (ret) {
-			xlog(L_FATAL, "%s: unable to reopen pipe: %d",
-					__func__, ret);
-			exit(ret);
-		}
-	}
-}
-
-static void
-cldcb(int UNUSED(fd), short which, void *data)
-{
-	ssize_t len;
-	struct cld_client *clnt = data;
-	struct cld_msg *cmsg = &clnt->cl_msg;
-
-	if (which != EV_READ)
-		goto out;
-
-	len = atomicio(read, clnt->cl_fd, cmsg, sizeof(*cmsg));
-	if (len <= 0) {
-		xlog(L_ERROR, "%s: pipe read failed: %m", __func__);
-		cld_pipe_open(clnt);
-		goto out;
-	}
-
-	if (cmsg->cm_vers != UPCALL_VERSION) {
-		xlog(L_ERROR, "%s: unsupported upcall version: %hu",
-				cmsg->cm_vers);
-		cld_pipe_open(clnt);
-		goto out;
-	}
-
-	switch(cmsg->cm_cmd) {
-	case Cld_Create:
-		cld_create(clnt);
-		break;
-	case Cld_Remove:
-		cld_remove(clnt);
-		break;
-	case Cld_Check:
-		cld_check(clnt);
-		break;
-	case Cld_GraceDone:
-		cld_gracedone(clnt);
-		break;
-	default:
-		xlog(L_WARNING, "%s: command %u is not yet implemented",
-				__func__, cmsg->cm_cmd);
-		cld_not_implemented(clnt);
-	}
-out:
-	event_add(&clnt->cl_event, NULL);
-}
-
-int
-main(int argc, char **argv)
-{
-	char arg;
-	int rc = 0;
-	bool foreground = false;
-	char *progname;
-	char *storagedir = CLD_DEFAULT_STORAGEDIR;
-	struct cld_client clnt;
-
-	memset(&clnt, 0, sizeof(clnt));
-
-	progname = strdup(basename(argv[0]));
-	if (!progname) {
-		fprintf(stderr, "%s: unable to allocate memory.\n", argv[0]);
-		return 1;
-	}
-
-	event_init();
-	xlog_syslog(0);
-	xlog_stderr(1);
-
-	/* process command-line options */
-	while ((arg = getopt_long(argc, argv, "hdFp:s:", longopts,
-				  NULL)) != EOF) {
-		switch (arg) {
-		case 'd':
-			xlog_config(D_ALL, 1);
-			break;
-		case 'F':
-			foreground = true;
-			break;
-		case 'p':
-			pipepath = optarg;
-			break;
-		case 's':
-			storagedir = optarg;
-			break;
-		default:
-			usage(progname);
-			return 0;
-		}
-	}
-
-
-	xlog_open(progname);
-	if (!foreground) {
-		xlog_syslog(1);
-		xlog_stderr(0);
-		rc = daemon(0, 0);
-		if (rc) {
-			xlog(L_ERROR, "Unable to daemonize: %m");
-			goto out;
-		}
-	}
-
-	/* drop all capabilities */
-	rc = cld_set_caps();
-	if (rc)
-		goto out;
-
-	/*
-	 * now see if the storagedir is writable by root w/o CAP_DAC_OVERRIDE.
-	 * If it isn't then give the user a warning but proceed as if
-	 * everything is OK. If the DB has already been created, then
-	 * everything might still work. If it doesn't exist at all, then
-	 * assume that the maindb init will be able to create it. Fail on
-	 * anything else.
-	 */
-	if (access(storagedir, W_OK) == -1) {
-		switch (errno) {
-		case EACCES:
-			xlog(L_WARNING, "Storage directory %s is not writable. "
-					"Should be owned by root and writable "
-					"by owner!", storagedir);
-			break;
-		case ENOENT:
-			/* ignore and assume that we can create dir as root */
-			break;
-		default:
-			xlog(L_ERROR, "Unexpected error when checking access "
-				      "on %s: %m", storagedir);
-			rc = -errno;
-			goto out;
-		}
-	}
-
-	/* set up storage db */
-	rc = sqlite_maindb_init(storagedir);
-	if (rc) {
-		xlog(L_ERROR, "Failed to open main database: %d", rc);
-		goto out;
-	}
-
-	/* set up event handler */
-	rc = cld_pipe_init(&clnt);
-	if (rc)
-		goto out;
-
-	xlog(D_GENERAL, "%s: Starting event dispatch handler.", __func__);
-	rc = event_dispatch();
-	if (rc < 0)
-		xlog(L_ERROR, "%s: event_dispatch failed: %m", __func__);
-
-	close(clnt.cl_fd);
-	close(inotify_fd);
-out:
-	free(progname);
-	return rc;
-}
diff --git a/utils/nfsdcltrack/nfsdcld.man b/utils/nfsdcltrack/nfsdcld.man
deleted file mode 100644
index 9ddaf64..0000000
--- a/utils/nfsdcltrack/nfsdcld.man
+++ /dev/null
@@ -1,185 +0,0 @@
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-.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
-.\" nothing in troff, for use with C<>.
-.tr \(*W-
-.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
-.ie n \{\
-.    ds -- \(*W-
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-.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
-.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
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-.\" entries marked with X<> in POD.  Of course, you'll have to process the
-.\" output yourself in some meaningful fashion.
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-.\}
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-.\" ========================================================================
-.\"
-.IX Title "NFSDCLD 8"
-.TH NFSDCLD 8 "2011-12-21" "" ""
-.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
-.\" way too many mistakes in technical documents.
-.if n .ad l
-.nh
-.SH "NAME"
-nfsdcld \- NFSv4 Client Tracking Daemon
-.SH "SYNOPSIS"
-.IX Header "SYNOPSIS"
-nfsdcld [\-d] [\-F] [\-p path] [\-s stable storage dir]
-.SH "DESCRIPTION"
-.IX Header "DESCRIPTION"
-nfsdcld is the NFSv4 client tracking daemon. It is not necessary to run
-this daemon on machines that are not acting as NFSv4 servers.
-.PP
-When a network partition is combined with a server reboot, there are
-edge conditions that can cause the server to grant lock reclaims when
-other clients have taken conflicting locks in the interim. A more detailed
-explanation of this issue is described in \s-1RFC\s0 3530, section 8.6.3.
-.PP
-In order to prevent these problems, the server must track a small amount
-of per-client information on stable storage. This daemon provides the
-userspace piece of that functionality.
-.SH "OPTIONS"
-.IX Header "OPTIONS"
-.IP "\fB\-d\fR, \fB\-\-debug\fR" 4
-.IX Item "-d, --debug"
-Enable debug level logging.
-.IP "\fB\-F\fR, \fB\-\-foreground\fR" 4
-.IX Item "-F, --foreground"
-Runs the daemon in the foreground and prints all output to stderr
-.IP "\fB\-p\fR \fIpipe\fR, \fB\-\-pipe\fR=\fIpipe\fR" 4
-.IX Item "-p pipe, --pipe=pipe"
-Location of the \*(L"cld\*(R" upcall pipe. The default value is
-\&\fI/var/lib/nfs/rpc_pipefs/nfsd/cld\fR. If the pipe does not exist when the
-daemon starts then it will wait for it to be created.
-.IP "\fB\-s\fR \fIstorage_dir\fR, \fB\-\-storagedir\fR=\fIstorage_dir\fR" 4
-.IX Item "-s storagedir, --storagedir=storage_dir"
-Directory where stable storage information should be kept. The default
-value is \fI/var/lib/nfs/nfsdcld\fR.
-.SH "NOTES"
-.IX Header "NOTES"
-The Linux kernel NFSv4 server has historically tracked this information
-on stable storage by manipulating information on the filesystem
-directly, in the directory to which \fI/proc/fs/nfsd/nfsv4recoverydir\fR
-points.
-.PP
-This daemon requires a kernel that supports the nfsdcld upcall. If the
-kernel does not support the new upcall, or is using the legacy client
-name tracking code then it will not create the pipe that nfsdcld uses to
-talk to the kernel.
-.PP
-This daemon should be run as root, as the pipe that it uses to communicate
-with the kernel is only accessable by root. The daemon however does drop all
-superuser capabilities after starting. Because of this, the \fIstoragedir\fR
-should be owned by root, and be readable and writable by owner.
-.SH "AUTHORS"
-.IX Header "AUTHORS"
-The nfsdcld daemon was developed by Jeff Layton <jlayton@xxxxxxxxxx>.
-- 
1.7.11.7

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