cfdisk.c

Util-linux 软件包包含许多工具。其中比较重要的是加载、卸载、格式化、分区和管理硬盘驱动器

    else
	fp_printf(fp, "%2d %-7.7s", p->num+1,
		  IS_LOGICAL(p->num) ? _("Logical") : _("Primary"));

    fp_printf(fp, " ");

    fp_printf(fp, "%11lld%c", p->first_sector,
	      ((p->first_sector/cylinder_size) !=
	       ((float)p->first_sector/cylinder_size) ?
	       '*' : ' '));

    fp_printf(fp, "%11lld%c", p->last_sector,
	      (((p->last_sector+1)/cylinder_size) !=
	       ((float)(p->last_sector+1)/cylinder_size) ?
	       '*' : ' '));

    fp_printf(fp, "%6ld%c", p->offset,
	      ((((p->first_sector == 0 || IS_LOGICAL(p->num)) &&
		 (p->offset != sectors)) ||
		(p->first_sector != 0 && IS_PRIMARY(p->num) &&
		 p->offset != 0)) ?
	       '#' : ' '));

    size = p->last_sector - p->first_sector + 1;
    fp_printf(fp, "%11lld%c", size,
	      ((size/cylinder_size) != ((float)size/cylinder_size) ?
	       '*' : ' '));

    /* fp_printf(fp, " "); */

    if (p->id == UNUSABLE)
	sprintf(part_str, "%.15s", _("Unusable"));
    else if (p->id == FREE_SPACE)
	sprintf(part_str, "%.15s", _("Free Space"));
    else if (partition_type_name(p->id))
	sprintf(part_str, "%.15s (%02X)", partition_type_name(p->id), p->id);
    else
	sprintf(part_str, "%.15s (%02X)", _("Unknown"), p->id);
    fp_printf(fp, "%-20.20s", part_str);

    fp_printf(fp, " ");

    if (p->flags == ACTIVE_FLAG)
	fp_printf(fp, _("Boot"), p->flags);
    else if (p->flags != 0)
	fp_printf(fp, _("(%02X)"), p->flags);
    else
	fp_printf(fp, _("None"), p->flags);

    fp_printf(fp, "\n");
}

static void
print_p_info(void) {
    char fname[LINE_LENGTH];
    FILE *fp;
    int i, to_file, pext = is_extended(ext_info.id);

    if (print_only) {
	fp = stdout;
	to_file = TRUE;
    } else {
	mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X,
		 _("Enter filename or press RETURN to display on screen: "));

	if ((to_file = get_string(fname, LINE_LENGTH, NULL)) < 0)
	    return;

	if (to_file) {
	    if ((fp = fopen(fname, "w")) == NULL) {
		char errstr[LINE_LENGTH];
		sprintf(errstr, _("Cannot open file '%s'"), fname);
		print_warning(errstr);
		return;
	    }
	} else {
	    fp = NULL;
	    erase();
	    move(0, 0);
	}
    }

    fp_printf(fp, _("Partition Table for %s\n"), disk_device);
    fp_printf(fp, "\n");
    fp_printf(fp, _("               First       Last\n"));
    fp_printf(fp, _(" # Type       Sector      Sector   Offset    Length   Filesystem Type (ID) Flag\n"));
    fp_printf(fp, _("-- ------- ----------- ----------- ------ ----------- -------------------- ----\n"));

    for (i = 0; i < num_parts; i++) {
	if (pext && (p_info[i].first_sector >= ext_info.first_sector)) {
	    print_p_info_entry(fp,&ext_info);
	    pext = FALSE;
	}
	print_p_info_entry(fp, &(p_info[i]));
    }

    if (to_file) {
	if (!print_only)
	    fclose(fp);
    } else {
        menuContinue();
    }
}

static void
print_part_entry(FILE *fp, int num, partition_info *pi) {
    long long first = 0, start = 0, end = 0, size = 0;
    unsigned char ss, es, sh, eh;
    int sc, ec;
    int flags = 0, id = 0;

    ss = sh = es = eh = 0;
    sc = ec = 0;

    if (pi != NULL) {
	flags = pi->flags;
	id = pi->id;

	if (IS_LOGICAL(num))
	    first = pi->offset;
	else
	    first = pi->first_sector + pi->offset;

	start = pi->first_sector + pi->offset;
	end = pi->last_sector;
	size = end - start + 1;

	set_hsc0(&sh, &ss, &sc, start);
	set_hsc0(&eh, &es, &ec, end);
    }

    fp_printf(fp, "%2d  0x%02X %4d %4d %4d 0x%02X %4d %4d %4d %11lld %11lld\n",
	      num+1, flags, sh, ss, sc, id, eh, es, ec, first, size);
}


static void
print_part_table(void) {
    int i, j, to_file;
    char fname[LINE_LENGTH];
    FILE *fp;

    if (print_only) {
	fp = stdout;
	to_file = TRUE;
    } else {
	mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X,
		 _("Enter filename or press RETURN to display on screen: "));

	if ((to_file = get_string(fname, LINE_LENGTH, NULL)) < 0)
	    return;

	if (to_file) {
	    if ((fp = fopen(fname, "w")) == NULL) {
		char errstr[LINE_LENGTH];
		sprintf(errstr, _("Cannot open file '%s'"), fname);
		print_warning(errstr);
		return;
	    }
	} else {
	    fp = NULL;
	    erase();
	    move(0, 0);
	}
    }

    fp_printf(fp, _("Partition Table for %s\n"), disk_device);
    fp_printf(fp, "\n");
    /* Three-line heading. Read "Start Sector" etc vertically. */
    fp_printf(fp, _("         ---Starting---      ----Ending----    Start     Number of\n"));
    fp_printf(fp, _(" # Flags Head Sect Cyl   ID  Head Sect Cyl     Sector    Sectors\n"));
    fp_printf(fp, _("-- ----- ---- ---- ---- ---- ---- ---- ---- ----------- -----------\n"));

    for (i = 0; i < 4; i++) {
	for (j = 0;
	     j < num_parts && (p_info[j].id <= 0 || p_info[j].num != i);
	     j++);
	if (j < num_parts) {
	    print_part_entry(fp, i, &(p_info[j]));
	} else if (is_extended(ext_info.id) && ext_info.num == i) {
	    print_part_entry(fp, i, &ext_info);
	} else {
	    print_part_entry(fp, i, NULL);
	}
    }

    for (i = 0; i < num_parts; i++)
	if (IS_LOGICAL(p_info[i].num))
	    print_part_entry(fp, p_info[i].num, &(p_info[i]));

    if (to_file) {
	if (!print_only)
	    fclose(fp);
    } else {
        menuContinue();
    }
}

static void
print_tables(void) {
    int done = FALSE;

    static struct MenuItem menuFormat[]=
    {
        { 'r', N_("Raw"), N_("Print the table using raw data format") },
        { 's', N_("Sectors"), N_("Print the table ordered by sectors") },
        { 't', N_("Table"), N_("Just print the partition table") },
        { ESC, N_("Cancel"), N_("Don't print the table") },
        { 0, NULL, NULL }
    };
    
    while (!done)
	switch ( toupper(menuSimple( menuFormat, 2)) ) {
	case 'R':
	    print_raw_table();
	    done = TRUE;
	    break;
	case 'S':
	    print_p_info();
	    done = TRUE;
	    break;
	case 'T':
	    print_part_table();
	    done = TRUE;
	    break;
	case ESC:
	    done = TRUE;
	    break;
	}
}

#define END_OF_HELP "EOHS!"
static void
display_help(void) {
    char *help_text[] = {
	N_("Help Screen for cfdisk"),
	"",
	N_("This is cfdisk, a curses based disk partitioning program, which"),
	N_("allows you to create, delete and modify partitions on your hard"),
	N_("disk drive."),
	"",
	N_("Copyright (C) 1994-1999 Kevin E. Martin & aeb"),
	"",
	N_("Command      Meaning"),
	N_("-------      -------"),
	N_("  b          Toggle bootable flag of the current partition"),
	N_("  d          Delete the current partition"),
	N_("  g          Change cylinders, heads, sectors-per-track parameters"),
	N_("             WARNING: This option should only be used by people who"),
	N_("             know what they are doing."),
	N_("  h          Print this screen"),
	N_("  m          Maximize disk usage of the current partition"),
	N_("             Note: This may make the partition incompatible with"),
	N_("             DOS, OS/2, ..."),
	N_("  n          Create new partition from free space"),
	N_("  p          Print partition table to the screen or to a file"),
	N_("             There are several different formats for the partition"),
	N_("             that you can choose from:"),
	N_("                r - Raw data (exactly what would be written to disk)"),
	N_("                s - Table ordered by sectors"),
	N_("                t - Table in raw format"),
	N_("  q          Quit program without writing partition table"),
	N_("  t          Change the filesystem type"),
	N_("  u          Change units of the partition size display"),
	N_("             Rotates through MB, sectors and cylinders"),
	N_("  W          Write partition table to disk (must enter upper case W)"),
        N_("             Since this might destroy data on the disk, you must"),
	N_("             either confirm or deny the write by entering `yes' or"),
	N_("             `no'"),
	N_("Up Arrow     Move cursor to the previous partition"),
	N_("Down Arrow   Move cursor to the next partition"),
	N_("CTRL-L       Redraws the screen"),
	N_("  ?          Print this screen"),
	"",
	N_("Note: All of the commands can be entered with either upper or lower"),
	N_("case letters (except for Writes)."),
	END_OF_HELP
    };

    int cur_line = 0;
    FILE *fp = NULL;

    erase();
    move(0, 0);
    while (strcmp(help_text[cur_line], END_OF_HELP)) {
	if (help_text[cur_line][0])
	    fp_printf(fp, "%s\n", _(help_text[cur_line]));
	else
	    fp_printf(fp, "\n");
	cur_line++;
    }
    menuContinue();
}

static int
change_geometry(void) {
    int ret_val = FALSE;
    int done = FALSE;
    char def[LINE_LENGTH];
    char response[LINE_LENGTH];
    long long tmp_val;
    int i;

    while (!done) {
        static struct MenuItem menuGeometry[]=
        {
            { 'c', N_("Cylinders"), N_("Change cylinder geometry") },
            { 'h', N_("Heads"), N_("Change head geometry") },
            { 's', N_("Sectors"), N_("Change sector geometry") },
            { 'd', N_("Done"), N_("Done with changing geometry") },
            { 0, NULL, NULL }
        };
	move(COMMAND_LINE_Y, COMMAND_LINE_X);
	clrtoeol();
	refresh();

	clear_warning();

	switch (toupper( menuSimple(menuGeometry, 3) )) {
	case 'C':
	    sprintf(def, "%llu", actual_size/cylinder_size);
	    mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X,
		     _("Enter the number of cylinders: "));
	    i = get_string(response, LINE_LENGTH, def);
	    if (i == GS_DEFAULT) {
		user_cylinders = actual_size/cylinder_size;
		ret_val = TRUE;
	    } else if (i > 0) {
		tmp_val = atoll(response);
		if (tmp_val > 0) {
		    user_cylinders = tmp_val;
		    ret_val = TRUE;
		} else
		    print_warning(_("Illegal cylinders value"));
	    }
	    break;
	case 'H':
	    sprintf(def, "%d", heads);
	    mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X,
		     _("Enter the number of heads: "));
	    if (get_string(response, LINE_LENGTH, def) > 0) {
		tmp_val = atoll(response);
		if (tmp_val > 0 && tmp_val <= MAX_HEADS) {
		    user_heads = tmp_val;
		    ret_val = TRUE;
		} else
		    print_warning(_("Illegal heads value"));
	    }
	    break;
	case 'S':
	    sprintf(def, "%d", sectors);
	    mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X,
		     _("Enter the number of sectors per track: "));
	    if (get_string(response, LINE_LENGTH, def) > 0) {
		tmp_val = atoll(response);
		if (tmp_val > 0 && tmp_val <= MAX_SECTORS) {
		    user_sectors = tmp_val;
		    ret_val = TRUE;
		} else
		    print_warning(_("Illegal sectors value"));
	    }
	    break;
	case ESC:
	case 'D':
	    done = TRUE;
	    break;
	default:
	    putchar(BELL);
	    break;
	}

	if (ret_val) {
	    decide_on_geometry();
	    draw_screen();
	}
    }

    if (ret_val) {
	long long disk_end;

	disk_end = total_size-1;

	if (p_info[num_parts-1].last_sector > disk_end) {
	    while (p_info[num_parts-1].first_sector > disk_end) {
		if (p_info[num_parts-1].id == FREE_SPACE ||
		    p_info[num_parts-1].id == UNUSABLE)
		    remove_part(num_parts-1);
		else
		    del_part(num_parts-1);
	    }

	    p_info[num_parts-1].last_sector = disk_end;

	    if (ext_info.last_sector > disk_end)
		ext_info.last_sector = disk_end;
	} else if (p_info[num_parts-1].last_sector < disk_end) {
	    if (p_info[num_parts-1].id == FREE_SPACE ||
		p_info[num_parts-1].id == UNUSABLE) {
		p_info[num_parts-1].last_sector = disk_end;
	    } else {
		insert_empty_part(num_parts,
				  p_info[num_parts-1].last_sector+1,
				  disk_end);
	    }
	}

	/* Make sure the partitions are correct */
	check_part_info();
    }

    return ret_val;
}

static void
change_id(int i) {
    char id[LINE_LENGTH], def[LINE_LENGTH];
    int num_types = 0;
    int num_across, num_down;
    int len, new_id = ((p_info[i].id == LINUX) ? LINUX_SWAP : LINUX);
    int y_start, y_end, row, row_min, row_max, row_offset, j, needmore;

    for (j = 1; i386_sys_types[j].name; j++) ;
    num_types = j-1;		/* do not count the Empty type */

    num_across = COLS/COL_ID_WIDTH;
    num_down = (((float)num_types)/num_across + 1);
    y_start = COMMAND_LINE_Y - 1 - num_down;
    if (y_start < 1) {
	y_start = 1;
	y_end = COMMAND_LINE_Y - 2;
    } else {
	if (y_start > DISK_TABLE_START+cur_part+4)
	    y_start = DISK_TABLE_START+cur_part+4;
	y_end = y_start + num_down - 1;
    }

    row_min = 1;
    row_max = COMMAND_LINE_Y - 2;
    row_offset = 0;
    do {
	for (j = y_start - 1; j <= y_end + 1; j++) {
	    move(j, 0);
	    clrtoeol();
	}
	needmore = 0;
	for (j = 1; i386_sys_types[j].name; j++) {
	    row = y_start + (j-1) % num_down - row_offset;
	    if (row >= row_min && row <= row_max) {
		move(row, ((j-1)/num_down)*COL_ID_WIDTH + 1);
		printw("%02X %-20.20s",
		       i386_sys_types[j].type,
		       i386_sys_types[j].name);
	    }
	    if (row > row_max)
		needmore = 1;
	}
	if (needmore)
		menuContinue();
	row_offset += (row_max - row_min + 1);
    } while(needmore);

    sprintf(def, "%02X", new_id);
    mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X, _("Enter filesystem type: "));
    if ((len = get_string(id, 2, def)) <= 0 && len != GS_DEFAULT)
	return;

    if (len != GS_DEFAULT) {
	if (!isxdigit(id[0]))
	    return;
	new_id = (isdigit(id[0]) ? id[0] - '0' : tolower(id[0]) - 'a' + 10);
	if (len == 2) {
	    if (isxdigit(id[1]))
		new_id = new_id*16 +
		    (isdigit(id[1]) ? id[1] - '0' : tolower(id[1]) - 'a' + 10);
	    else
		return;
	}
    }

    if (new_id == 0)
	print_warning(_("Cannot change FS Type to empty"));
    else if (is_extended(new_id))
	print_warning(_("Cannot change FS Type to extended"));
    else
	p_info[i].id = new_id;
}

static void
draw_partition(int i) {
    int j;
    int y = i + DISK_TABLE_S