376 lines
7.6 KiB
C
376 lines
7.6 KiB
C
/* $NetBSD: interact.c,v 1.6 1997/09/18 22:20:36 enami Exp $ */
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/*
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* Copyright (c) 1997 Christos Zoulas. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christos Zoulas.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: interact.c,v 1.6 1997/09/18 22:20:36 enami Exp $");
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#endif /* lint */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <util.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#define DKTYPENAMES
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#include <sys/disklabel.h>
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#include "extern.h"
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static void cmd_help __P((struct disklabel *, char *, int));
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static void cmd_print __P((struct disklabel *, char *, int));
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static void cmd_part __P((struct disklabel *, char *, int));
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static void cmd_label __P((struct disklabel *, char *, int));
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static void cmd_round __P((struct disklabel *, char *, int));
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static void cmd_name __P((struct disklabel *, char *, int));
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static int runcmd __P((char *, struct disklabel *, int));
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static int getinput __P((const char *, const char *, const char *, char *));
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static void defnum __P((char *, struct disklabel *, int));
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static int getnum __P((char *, struct disklabel *));
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static void deffstypename __P((char *, int));
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static int getfstypename __P((const char *));
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static int rounding = 0; /* sector rounding */
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static struct cmds {
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const char *name;
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void (*func) __P((struct disklabel *, char *, int));
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const char *help;
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} cmds[] = {
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{ "?", cmd_help, "print this menu" },
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{ "N", cmd_name, "name the label" },
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{ "P", cmd_print, "print current partition table" },
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{ "Q", NULL, "quit" },
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{ "R", cmd_round, "rounding (c)ylinders (s)ectors" },
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{ "W", cmd_label, "write the current partition table" },
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{ NULL, NULL, NULL }
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};
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static void
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cmd_help(lp, s, fd)
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struct disklabel *lp;
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char *s;
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int fd;
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{
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struct cmds *cmd;
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for (cmd = cmds; cmd->name != NULL; cmd++)
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printf("%s\t%s\n", cmd->name, cmd->help);
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printf("[a-%c]\tdefine named partition\n",
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'a' + getmaxpartitions() - 1);
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}
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static void
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cmd_print(lp, s, fd)
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struct disklabel *lp;
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char *s;
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int fd;
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{
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display(stdout, lp);
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}
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static void
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cmd_name(lp, s, fd)
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struct disklabel *lp;
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char *s;
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int fd;
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{
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char line[BUFSIZ];
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int i = getinput(":", "Label name", lp->d_packname, line);
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if (i <= 0)
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return;
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(void) strncpy(lp->d_packname, line, sizeof(lp->d_packname));
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}
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static void
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cmd_round(lp, s, fd)
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struct disklabel *lp;
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char *s;
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int fd;
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{
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int i;
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char line[BUFSIZ];
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i = getinput(":", "Rounding", rounding ? "cylinders" : "sectors", line);
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if (i <= 0)
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return;
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switch (line[0]) {
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case 'c':
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rounding = 1;
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return;
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case 's':
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rounding = 0;
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return;
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default:
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printf("Rounding can be (c)ylinders or (s)ectors\n");
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return;
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}
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}
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static void
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cmd_part(lp, s, fd)
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struct disklabel *lp;
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char *s;
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int fd;
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{
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int i;
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char line[BUFSIZ];
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char def[BUFSIZ];
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int part = *s - 'a';
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struct partition *p = &lp->d_partitions[part];
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if (part >= lp->d_npartitions)
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lp->d_npartitions = part + 1;
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for (;;) {
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deffstypename(def, p->p_fstype);
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i = getinput(":", "Filesystem type", def, line);
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if (i <= 0)
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break;
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if ((i = getfstypename(line)) == -1) {
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printf("Invalid file system typename `%s'\n", line);
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continue;
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}
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p->p_fstype = i;
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break;
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}
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for (;;) {
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defnum(def, lp, p->p_offset);
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i = getinput(":", "Start offset", def, line);
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if (i <= 0)
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break;
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if ((i = getnum(line, lp)) == -1) {
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printf("Bad offset `%s'\n", line);
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continue;
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}
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p->p_offset = i;
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break;
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}
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for (;;) {
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defnum(def, lp, p->p_size);
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i = getinput(":", "Partition size", def, line);
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if (i <= 0)
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break;
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if ((i = getnum(line, lp)) == -1) {
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printf("Bad size `%s'\n", line);
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continue;
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}
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p->p_size = i;
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break;
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}
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}
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static void
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cmd_label(lp, s, fd)
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struct disklabel *lp;
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char *s;
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int fd;
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{
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char line[BUFSIZ];
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int i;
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i = getinput("?", "Label disk", "n", line);
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if (i <= 0 || *line != 'y')
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return;
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if (checklabel(lp) != 0) {
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printf("Label not written\n");
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return;
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}
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if (writelabel(fd, bootarea, lp) != 0) {
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printf("Label not written\n");
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return;
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}
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printf("Label written\n");
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}
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static int
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runcmd(line, lp, fd)
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char *line;
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struct disklabel *lp;
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int fd;
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{
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struct cmds *cmd;
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for (cmd = cmds; cmd->name != NULL; cmd++)
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if (strncmp(line, cmd->name, strlen(cmd->name)) == 0) {
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if (cmd->func == NULL)
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return -1;
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(*cmd->func)(lp, line, fd);
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return 0;
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}
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if (line[1] == '\0' &&
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line[0] >= 'a' && line[0] < 'a' + getmaxpartitions()) {
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cmd_part(lp, line, fd);
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return 0;
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}
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printf("Unknown command %s\n", line);
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return 1;
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}
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static int
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getinput(sep, prompt, def, line)
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const char *sep;
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const char *prompt;
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const char *def;
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char *line;
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{
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for (;;) {
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printf("%s", prompt);
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if (def)
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printf(" [%s]", def);
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printf("%s ", sep);
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if (fgets(line, BUFSIZ, stdin) == NULL)
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return -1;
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if (line[0] == '\n' || line[0] == '\0') {
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if (def)
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return 0;
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}
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else {
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char *p;
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if ((p = strrchr(line, '\n')) != NULL)
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*p = '\0';
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return 1;
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}
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}
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}
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static void
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defnum(buf, lp, size)
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char *buf;
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struct disklabel *lp;
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int size;
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{
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(void) snprintf(buf, BUFSIZ, "%gc, %ds, %gM",
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size / (float) lp->d_secpercyl,
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size, size * (lp->d_secsize / (float) (1024 * 1024)));
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}
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static int
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getnum(buf, lp)
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char *buf;
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struct disklabel *lp;
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{
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char *ep;
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double d = strtod(buf, &ep);
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int rv;
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if (buf == ep)
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return -1;
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#define ROUND(a) ((a / lp->d_secpercyl) + \
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((a % lp->d_secpercyl) ? 1 : 0)) * lp->d_secpercyl
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switch (*ep) {
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case '\0':
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case 's':
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rv = (int) d;
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break;
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case 'c':
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rv = (int) (d * lp->d_secpercyl);
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break;
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case 'M':
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rv = (int) (d * 1024 * 1024 / lp->d_secsize);
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break;
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default:
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printf("Unit error %c\n", *ep);
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return -1;
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}
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if (rounding)
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return ROUND(rv);
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else
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return rv;
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}
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static void
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deffstypename(buf, i)
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char *buf;
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int i;
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{
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if (i < 0 || i >= DKMAXTYPES)
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i = 0;
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(void) strcpy(buf, fstypenames[i]);
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}
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static int
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getfstypename(buf)
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const char *buf;
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{
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int i;
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for (i = 0; i < DKMAXTYPES; i++)
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if (strcmp(buf, fstypenames[i]) == 0)
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return i;
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return -1;
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}
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void
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interact(lp, fd)
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struct disklabel *lp;
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int fd;
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{
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char line[BUFSIZ];
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for (;;) {
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if (getinput(">", "partition", NULL, line) == -1)
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return;
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if (runcmd(line, lp, fd) == -1)
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return;
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}
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}
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