smbclnt/umount/umount.c

	umount.c revision 4bff34e37def8a90f9194d81bc345c52ba20086a
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER START
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * The contents of this file are subject to the terms of the
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Common Development and Distribution License (the "License").
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You may not use this file except in compliance with the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * See the License for the specific language governing permissions
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * and limitations under the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner]
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis *
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER END
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Use is subject to license terms.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#pragma ident   "%Z%%M% %I% %E% SMI"
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis/*
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * smbfs umount
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <stdio.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <stdlib.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <string.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <stdarg.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <signal.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <unistd.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <kstat.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <rpc/rpc.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <sys/mnttab.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <sys/mount.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <sys/mntent.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <errno.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <locale.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <fslib.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#include <priv.h>
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#define RET_OK  0
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#define RET_ERR 32
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisstatic void pr_err(const char *fmt, ...);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisstatic void usage();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisstatic int smbfs_unmount(char *, int);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisstatic struct extmnttab *mnttab_find();
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisstatic char *myname;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisstatic char typename[64];
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisint
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtismain(int argc, char *argv[])
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis{
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis    extern int optind;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis    int c;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis    int umnt_flag = 0;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis    (void) setlocale(LC_ALL, "");
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
    (void) textdomain(TEXT_DOMAIN);

    myname = strrchr(argv[0], '/');
    myname = myname ? myname+1 : argv[0];
    (void) sprintf(typename, "smbfs %s", myname);
    argv[0] = typename;

    /*
     * Set options
     */
    while ((c = getopt(argc, argv, "f")) != EOF) {
        switch (c) {
        case 'f':
            umnt_flag |= MS_FORCE; /* forced unmount is desired */
            break;
        default:
            usage();
            exit(RET_ERR);
        }
    }
    if (argc - optind != 1) {
        usage();
        exit(RET_ERR);
    }

    return (smbfs_unmount(argv[optind], umnt_flag));
}

static void
pr_err(const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);
    (void) fprintf(stderr, "%s: ", typename);
    (void) vfprintf(stderr, fmt, ap);
    (void) fflush(stderr);
    va_end(ap);
}

static void
usage()
{
    (void) fprintf(stderr,
        gettext("Usage: smbfs umount [-o opts] {//server/share | dir}\n"));
    exit(RET_ERR);
}

static int
smbfs_unmount(char *pathname, int umnt_flag)
{
    struct extmnttab *mntp;

    mntp = mnttab_find(pathname);
    if (mntp) {
        pathname = mntp->mnt_mountp;
    }

    if (umount2(pathname, umnt_flag) < 0) {
        pr_err(gettext("%s: %s\n"), pathname, strerror(errno));
        return (RET_ERR);
    }

    return (RET_OK);
}

/*
 *  Find the mnttab entry that corresponds to "name".
 *  We're not sure what the name represents: either
 *  a mountpoint name, or a special name (server:/path).
 *  Return the last entry in the file that matches.
 */
static struct extmnttab *
mnttab_find(dirname)
    char *dirname;
{
    FILE *fp;
    struct extmnttab mnt;
    struct extmnttab *res = NULL;

    fp = fopen(MNTTAB, "r");
    if (fp == NULL) {
        pr_err("%s: %s\n", MNTTAB, strerror(errno));
        return (NULL);
    }
    while (getextmntent(fp, &mnt, sizeof (struct extmnttab)) == 0) {
        if (strcmp(mnt.mnt_mountp, dirname) == 0 ||
            strcmp(mnt.mnt_special, dirname) == 0) {
            if (res)
                fsfreemnttab(res);
            res = fsdupmnttab(&mnt);
        }
    }

    fclose(fp);
    return (res);
}