udfs/mount/mount.c

/*
 * 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
 */
/*
 * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <ctype.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h> /* for getopt(3) */
#include <signal.h>
#include <locale.h>
#include <fslib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/mnttab.h>
#include <sys/mount.h>

#define FSTYPE      "udfs"
#define NAME_MAX    64

static int roflag = 0;
static int mflag = 0;
static int Oflag = 0;
static int qflag = 0;

static char  optbuf[MAX_MNTOPT_STR] = { '\0', };
static int   optsize = 0;

static char fstype[] = FSTYPE;

static char typename[NAME_MAX], *myname;

static void do_mount(char *, char *, int);
static void rpterr(char *, char *);
static void usage(void);

int
main(int argc, char **argv)
{
    char *special, *mountp;
    int flags = 0;
    int c;

    (void) setlocale(LC_ALL, "");

#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
    (void) textdomain(TEXT_DOMAIN);

    myname = strrchr(argv[0], '/');
    if (myname) {
        myname++;
    } else {
        myname = argv[0];
    }
    (void) snprintf(typename, sizeof (typename), "%s %s", fstype, myname);
    argv[0] = typename;

    /* check for proper arguments */

    while ((c = getopt(argc, argv, "mo:rOq")) != EOF) {
        switch (c) {
        case 'm':
            mflag++;
            break;
        case 'o':
            if (strlcpy(optbuf, optarg, sizeof (optbuf)) >=
                sizeof (optbuf)) {
                (void) fprintf(stderr,
                    gettext("%s: Invalid argument: %s\n"),
                    myname, optarg);
                return (2);
            }
            optsize = strlen(optbuf);
            break;
        case 'r':
            roflag++;
            break;
        case 'O':
            Oflag++;
            break;
        case 'q':
            qflag = 1;
            break;
        default :
            break;
        }
    }

    if ((argc - optind) != 2)
        usage();

    special = argv[optind++];
    mountp = argv[optind++];

    if (roflag)
        flags = MS_RDONLY;

    if (optsize > 0) {
        struct mnttab m;

        m.mnt_mntopts = optbuf;
        if (hasmntopt(&m, "m"))
            mflag++;
    }

    flags |= (Oflag ? MS_OVERLAY : 0);
    flags |= (mflag ? MS_NOMNTTAB : 0);


    /*
     *  Perform the mount.
     *  Only the low-order bit of "roflag" is used by the system
     *  calls (to denote read-only or read-write).
     */
    do_mount(special, mountp, flags);
    return (0);
}


static void
rpterr(char *bs, char *mp)
{
    switch (errno) {
    case EPERM:
        (void) fprintf(stderr,
            gettext("%s: insufficient privileges\n"), myname);
        break;
    case ENXIO:
        (void) fprintf(stderr,
            gettext("%s: %s no such device\n"), myname, bs);
        break;
    case ENOTDIR:
        (void) fprintf(stderr,
            gettext("%s: %s not a directory\n\t"
                "or a component of %s is not a directory\n"),
            myname, mp, bs);
        break;
    case ENOENT:
        (void) fprintf(stderr,
            gettext("%s: %s or %s, no such file or directory\n"),
            myname, bs, mp);
        break;
    case EINVAL:
        (void) fprintf(stderr,
            gettext("%s: %s is not an udfs file system.\n"),
            typename, bs);
        break;
    case EBUSY:
        (void) fprintf(stderr,
            gettext("%s: %s is already mounted or %s is busy\n"),
            myname, bs, mp);
        break;
    case ENOTBLK:
        (void) fprintf(stderr,
            gettext("%s: %s not a block device\n"), myname, bs);
        break;
    case EROFS:
        (void) fprintf(stderr,
            gettext("%s: %s write-protected\n"),
            myname, bs);
        break;
    case ENOSPC:
        (void) fprintf(stderr,
            gettext("%s: %s is corrupted. needs checking\n"),
            myname, bs);
        break;
    default:
        perror(myname);
        (void) fprintf(stderr,
            gettext("%s: cannot mount %s\n"), myname, bs);
    }
}


static void
do_mount(char *special, char *mountp, int flag)
{
    char *savedoptbuf;

    if ((savedoptbuf = strdup(optbuf)) == NULL) {
        (void) fprintf(stderr, gettext("%s: out of memory\n"),
            myname);
        exit(2);
    }
    if (mount(special, mountp, flag | MS_DATA | MS_OPTIONSTR,
        fstype, NULL, 0, optbuf, MAX_MNTOPT_STR) == -1) {
        rpterr(special, mountp);
        exit(31+2);
    }
    if (optsize && !qflag)
        cmp_requested_to_actual_options(savedoptbuf, optbuf,
            special, mountp);
}


static void
usage(void)
{
    (void) fprintf(stdout, gettext("udfs usage:\n"
            "mount [-F udfs] [generic options] "
            "[-o suboptions] {special | mount_point}\n"));
    (void) fprintf(stdout, gettext("\tsuboptions are: \n"
            "\t ro,rw,nosuid,remount,m\n"));
    (void) fprintf(stdout, gettext(
            "\t only one of ro, rw can be "
            "used at the same time\n"));
    (void) fprintf(stdout, gettext(
            "\t remount can be used only with rw\n"));

    exit(32);
}