--- old/usr/src/cmd/fs.d/cachefs/umount/umount.c	Sat Sep 12 00:41:19 2015
+++ /dev/null	Fri Sep 11 21:22:37 2015
@@ -1,372 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License, Version 1.0 only
- * (the "License").  You may not use this file except in compliance
- * with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-/*
- * -----------------------------------------------------------------
- *
- *			umount.c
- *
- * CFS specific umount command.
- */
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-/*
- * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-#include <locale.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <limits.h>
-#include <errno.h>
-#include <wait.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/fcntl.h>
-#include <sys/mount.h>
-#include <sys/mntent.h>
-#include <sys/mnttab.h>
-#include <sys/fs/cachefs_fs.h>
-#include <fslib.h>
-#include <sys/utsname.h>
-#include <rpc/rpc.h>
-#include "../common/subr.h"
-#include "../common/cachefsd.h"
-
-/* forward references */
-void pr_err(char *fmt, ...);
-void usage(char *msgp);
-int daemon_unmount(char *mntptp, int);
-
-/*
- *
- *			main
- *
- * Description:
- *	Main routine for the cfs umount program.
- * Arguments:
- *	argc	number of command line arguments
- *	argv	list of command line arguments
- * Returns:
- *	Returns 0 for success or 1 if an error occurs.
- * Preconditions:
- */
-
-int
-main(int argc, char **argv)
-{
-	char *strp;
-	int xx;
-	int ret;
-	struct mnttab mget;
-	struct mnttab mref;
-	FILE *finp;
-	char mnt_front[PATH_MAX];
-	char mnt_back[PATH_MAX];
-	char *p, mnt_frontns[PATH_MAX];
-	pid_t pid;
-	int stat_loc;
-	char *cachedirp, *s;
-	int ufd, c;
-	int flag = 0;
-
-	(void) setlocale(LC_ALL, "");
-#if !defined(TEXT_DOMAIN)
-#define	TEXT_DOMAIN	"SYS_TEST"
-#endif
-	(void) textdomain(TEXT_DOMAIN);
-
-	/*
-	 * Set options
-	 */
-	while ((c = getopt(argc, argv, "f")) != EOF) {
-		switch (c) {
-		case 'f':
-			flag |= MS_FORCE; /* forced unmount is desired */
-			break;
-		default:
-			usage("Incorrect number of arguments specified");
-			return (1);
-		}
-	}
-	if (flag & MS_FORCE)
-		strcpy(mnt_front, argv[2]);
-	else
-		strcpy(mnt_front, argv[1]);
-	mnt_back[0] = '\0';
-
-	if (strlen(argv[1]) >= (size_t)PATH_MAX) {
-		pr_err(gettext("name too long"));
-		return (1);
-	}
-
-	/*
-	 * An unmount from autofs may have a
-	 * space appended to the path.
-	 * Trim it off before attempting to
-	 * match the mountpoint in mnttab
-	 */
-	strcpy(mnt_frontns, mnt_front);
-	p = &mnt_frontns[strlen(mnt_frontns) - 1];
-	if (*p == ' ')
-		*p = '\0';
-
-	/* get the mount point and the back file system mount point */
-	finp = fopen(MNTTAB, "r");
-	if (finp) {
-		mntnull(&mref);
-		mref.mnt_mountp = mnt_frontns;
-		mref.mnt_fstype = "cachefs";
-		ret = getmntany(finp, &mget, &mref);
-
-		cachedirp = (char *)malloc(strlen(mget.mnt_special) + 1);
-		strcpy(cachedirp, mget.mnt_special);
-		/*
-		 * AutoClient mounts do not have .cfs_mnt_points string in
-		 * them, so strstr would return NULL. So .cfs_unmnt file
-		 * is not updated.
-		 */
-		if ((s = strstr(cachedirp, ".cfs_mnt_points")) != NULL) {
-			time32_t btime;
-
-			xx = -1;
-			cachedirp[s-cachedirp] = '\0';
-			strcat(cachedirp, CACHEFS_UNMNT_FILE);
-			if ((ufd = open(cachedirp, O_WRONLY|O_CREAT|O_TRUNC,
-					0600)) > 0) {
-				if ((btime = get_boottime()) != -1)
-				    xx = write(ufd, &btime, sizeof (time32_t));
-				close(ufd);
-			}
-			if (xx < 0)
-				pr_err(gettext(".cfs_unmnt error"));
-		}
-
-		if (ret != -1) {
-			if (mget.mnt_special)
-				strcpy(mnt_back, mget.mnt_special);
-		} else {
-			mref.mnt_special = mref.mnt_mountp;
-			mref.mnt_mountp = NULL;
-			rewind(finp);
-			ret = getmntany(finp, &mget, &mref);
-			if (ret != -1) {
-				strcpy(mnt_front, mget.mnt_mountp);
-				if (mget.mnt_special)
-					strcpy(mnt_back, mget.mnt_special);
-			} else {
-				pr_err(gettext("warning: %s not in mnttab"),
-				    mref.mnt_special);
-			}
-		}
-		fclose(finp);
-	}
-
-	/* try to get the daemon to unmount this file system for us */
-	xx = daemon_unmount(mnt_front, flag);
-	if (xx == ENOTSUP)
-		return (1);
-	if (xx == EBUSY) {
-		pr_err(gettext("%s %s"), mnt_front, strerror(xx));
-		return (1);
-	}
-	if (xx == EIO) {
-		/* try to unmount the file system directly */
-		if (umount2(mnt_front, flag) == -1) {
-			pr_err(gettext("%s %s"), mnt_front, strerror(errno));
-			return (1);
-		}
-	}
-
-	/* if we do not know the name of the back file system mount point */
-	if (mnt_back[0] == '\0') {
-		/* all done */
-		return (0);
-	}
-
-	/*
-	 * If the back file system was mounted on a directory with a
-	 * parent name of BACKMNT_NAME then we assume that we
-	 * mounted it and that it is okay to try to umount it.
-	 */
-	if (strstr(mnt_back, BACKMNT_NAME) == NULL)
-		return (0);
-
-	/* if no back file system mounted */
-	if (strcmp(mnt_back, "nobackfs") == 0)
-		return (0);
-
-	/* fork */
-	if ((pid = fork()) == -1) {
-		pr_err(gettext("could not fork %s"), strerror(errno));
-		return (1);
-	}
-
-	/* if the child */
-	if (pid == 0) {
-		/* invoke the umount command on the back file system */
-		xx = execl("/sbin/umount", "/sbin/umount", mnt_back, NULL);
-		pr_err(gettext("could not exec /sbin/umount"
-		    " on back file system %s"), strerror(errno));
-	}
-
-	/* else if the parent */
-	else {
-		/* wait for the child to exit */
-		if (wait(&stat_loc) == -1) {
-			pr_err(gettext("wait failed %s"), strerror(errno));
-			return (1);
-		}
-
-		if (!WIFEXITED(stat_loc)) {
-			pr_err(gettext("back umount did not exit"));
-			return (1);
-		}
-
-		xx = WEXITSTATUS(stat_loc);
-		if (xx) {
-			pr_err(gettext("back umount failed"));
-			return (xx);
-		}
-	}
-
-	/* delete the back file system mount point since we created it */
-	rmdir(mnt_back);
-
-	return (xx);
-}
-
-/*
- *
- *			pr_err
- *
- * Description:
- *	Prints an error message to stderr.
- * Arguments:
- *	fmt	printf style format
- *	...	arguments for fmt
- * Returns:
- * Preconditions:
- *	precond(fmt)
- */
-
-void
-pr_err(char *fmt, ...)
-{
-	va_list ap;
-
-	va_start(ap, fmt);
-	(void) fprintf(stderr, gettext("umount -F cachefs: "));
-	(void) vfprintf(stderr, fmt, ap);
-	(void) fprintf(stderr, "\n");
-	va_end(ap);
-}
-
-/*
- *
- *			usage
- *
- * Description:
- *	Prints a usage message.
- * Arguments:
- *	An optional additional message to be displayed.
- * Returns:
- * Preconditions:
- */
-
-void
-usage(char *msgp)
-{
-	if (msgp)
-		pr_err(gettext("%s"), msgp);
-	fprintf(stderr, gettext("Usage: umount -F cachefs dir"));
-}
-
-/*
- *
- *			daemon_unmount
- *
- * Description:
- *	Notifies the cachefsd of an unmount request.
- * Arguments:
- *	Mount point to unmount.
- * Returns:
- *	Returns 0 if the cachefsd unmounted the file system
- *		EIO if should try unmount directly
- *		EBUSY if did not unmount because busy
- *		EAGAIN if umounted but should not unmount nfs mount
- *
- * Preconditions:
- *	precond(mntptp)
- */
-
-int
-daemon_unmount(char *mntptp, int flag)
-{
-	CLIENT *clnt;
-	enum clnt_stat retval;
-	int xx;
-	int result;
-	char *hostp;
-	struct utsname info;
-	static struct timeval TIMEOUT = { 60*60, 0 };
-	static struct timeval create_timeout = { 5, 0};
-	struct cachefsd_fs_unmounted uargs;
-
-	/* get the host name */
-	xx = uname(&info);
-	if (xx == -1) {
-		pr_err(gettext("cannot get host name, errno %d"), errno);
-		return (EIO);
-	}
-	hostp = info.nodename;
-	uargs.mntpt = mntptp;
-	uargs.flag = flag;
-
-	/* creat the connection to the daemon */
-	clnt = clnt_create_timed(hostp, CACHEFSDPROG, CACHEFSDVERS, "local",
-	    &create_timeout);
-	if (clnt == NULL) {
-		pr_err(gettext("cachefsd is not running"));
-		return (EIO);
-	}
-	clnt_control(clnt, CLSET_TIMEOUT, (char *)&TIMEOUT);
-
-	retval = cachefsd_fs_unmounted_1(&uargs, &result, clnt);
-	if (retval != RPC_SUCCESS) {
-		clnt_perror(clnt, gettext("cachefsd is not responding"));
-		clnt_destroy(clnt);
-		return (EIO);
-	}
-
-	clnt_destroy(clnt);
-
-	return (result);
-}
