- partially complete tool for creating empty disk images of the right size
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Bryce Denney
parent
a134d9fb86
commit
df86e3266d
222
bochs/misc/mkimg2.c
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222
bochs/misc/mkimg2.c
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/*
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* mkimg2.c
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*
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* Create empty hard disk or floppy disk images for bochs.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "config.h"
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/* remove leading spaces, newline junk at end.
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return pointer to cleaned string, which is between s0 and the null */
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char *
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clean_string (char *s0)
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{
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char *s = s0;
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char *ptr;
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/* find first nonblank */
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while (isspace (*s))
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s++;
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/* truncate string at first non-alphanumeric */
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ptr = s;
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while (isprint (*ptr))
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ptr++;
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*ptr = 0;
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return s;
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}
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/* returns 0 on success, -1 on failure */
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int ask_int (char *prompt, int min, int max, int the_default, int *out)
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{
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int n = max + 1;
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char buffer[1024];
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char *clean;
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int illegal;
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while (1) {
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printf ("%s", prompt);
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if (!fgets (buffer, sizeof(buffer), stdin))
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return -1;
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//printf ("Before cleaning we had: '%s'\n", buffer);
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clean = clean_string (buffer);
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//printf ("After cleaning we had: '%s'\n", clean);
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if (strlen(clean) < 1) {
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// empty line, use the default
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*out = the_default;
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return 0;
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}
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illegal = (1 != sscanf (buffer, "%d", &n));
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if (illegal || n<min || n>max) {
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printf ("Your choice (%s) was not an integer between %d and %d.\n\n",
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clean, min, max);
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} else {
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// choice is okay
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*out = n;
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return 0;
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}
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}
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}
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int ask_menu (char *prompt, int n_choices, char *choice[], int the_default, int *out)
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{
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char buffer[1024];
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char *clean;
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int i;
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*out = -1;
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while (1) {
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printf ("%s", prompt);
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if (!fgets (buffer, sizeof(buffer), stdin))
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return -1;
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//printf ("Before cleaning we had: '%s'\n", buffer);
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clean = clean_string (buffer);
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//printf ("After cleaning we had: '%s'\n", clean);
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if (strlen(clean) < 1) {
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// empty line, use the default
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*out = the_default;
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return 0;
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}
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for (i=0; i<n_choices; i++) {
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if (!strcasecmp (choice[i], clean)) {
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// matched, return the choice number
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*out = i;
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return 0;
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}
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}
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printf ("Your choice (%s) did not match any of the choices:\n", clean);
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for (i=0; i<n_choices; i++) {
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if (i>0) printf (", ");
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printf ("%s", choice[i]);
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}
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printf ("\n");
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}
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}
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int ask_string (char *prompt, char *the_default, char *out)
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{
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char buffer[1024];
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char *clean;
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int i;
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out[0] = 0;
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printf ("%s", prompt);
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if (!fgets (buffer, sizeof(buffer), stdin))
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return -1;
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//printf ("Before cleaning we had: '%s'\n", buffer);
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clean = clean_string (buffer);
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//printf ("After cleaning we had: '%s'\n", clean);
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if (strlen(clean) < 1) {
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// empty line, use the default
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strcpy (out, the_default);
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return 0;
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}
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strcpy (out, clean);
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return 0;
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}
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char *fdhd_menu = "\nDo you want to create a floppy disk image or a hard disk image?\nPlease type hd or fd. [hd] ";
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char *fdhd_choices[] = { "fd", "hd" };
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int fdhd_n_choices = 2;
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char *fdsize_menu = "\nChoose the size of floppy disk image to create, in megabytes.\nPlease type 0.72, 1.2, 1.44, or 2.88. [1.44] ";
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char *fdsize_choices[] = { "0.72","1.2","1.44","2.88" };
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int fdsize_n_choices = 4;
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void panic (char *c)
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{
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printf ("Internal error: %s\n", c);
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exit (1);
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}
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int make_image (int sec, char *filename)
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{
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FILE *fp = fopen (filename, "w");
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char buffer[1024];
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int i;
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unsigned int n;
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if (fp == NULL) {
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// attempt to print an error
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#ifdef HAVE_PERROR
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sprintf (buffer, "while opening '%s' for writing", filename);
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perror (buffer);
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#endif
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exit (1);
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}
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// clear the buffer
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for (i=0; i<512; i++)
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buffer[i] = 0;
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// write it however many times
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printf ("\nWriting: ");
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for (i=0; i<sec; i++) {
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n = (unsigned int) fwrite (buffer, 512, 1, fp);
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if (n != 1) {
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printf ("ERROR: Write failed after %d sectors have been written\n", i);
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fclose (fp);
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return -1;
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}
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if (i&16) printf (".");
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#error fixme
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}
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printf ("done.\n");
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fclose (fp);
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return 0;
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}
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int main()
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{
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int hd;
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int sectors = 0;
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char filename[256];
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char bochsrc_line[256];
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filename[0] = 0;
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if (ask_menu (fdhd_menu, fdhd_n_choices, fdhd_choices, 1, &hd) < 0)
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exit (1);
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if (hd) {
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int hdsize, cyl, heads=16, spt=63;
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if (ask_int ("\nEnter the hard disk size in megabytes, between 1 and 65535\n[10] ", 1, 65535, 10, &hdsize) < 0)
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exit (1);
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cyl = hdsize*1024*1024/16/63/512;
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sectors = cyl*heads*spt;
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printf ("\nI will create a hard disk image with\n");
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printf (" cyl=%d\n", cyl);
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printf (" heads=%d\n", heads);
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printf (" sectors per track=%d\n", spt);
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printf (" total sectors=%d\n", sectors);
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printf (" total size=%.2f megabytes\n", (float)sectors*512.0/1024.0/1024.0);
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if (ask_string ("\nWhat should I name the image?\n[c.img] ", "c.img", filename) < 0)
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exit(1);
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sprintf (bochsrc_line, "diskc: file=\"%s\", cyl=%d, heads=%d, spt=%d", filename, cyl, heads, spt);
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} else {
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int fdsize, cyl, heads, spt;
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char *name;
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if (ask_menu (fdsize_menu, fdsize_n_choices, fdsize_choices, 2, &fdsize) < 0)
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exit (1);
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switch (fdsize) {
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case 0: name="720k"; cyl=80; heads=2; spt=9; break; /* 0.72 meg */
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case 1: name="1_2"; cyl=80; heads=2; spt=15; break; /* 1.2 meg */
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case 2: name="1_44"; cyl=80; heads=2; spt=18; break; /* 1.44 meg */
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case 3: name="2_88"; cyl=80; heads=2; spt=36; break; /* 2.88 meg */
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default:
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printf ("ERROR: fdsize out of range");
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exit (1);
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}
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sectors = cyl*heads*spt;
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printf ("I will create a floppy image with\n");
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printf (" cyl=%d\n", cyl);
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printf (" heads=%d\n", heads);
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printf (" sectors per track=%d\n", spt);
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printf (" total sectors=%d\n", sectors);
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printf (" total bytes=%d\n", sectors*512);
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if (ask_string ("\nWhat should I name the image?\n[a.img] ", "a.img", filename) < 0)
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exit(1);
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sprintf (bochsrc_line, "floppya: %s=\"%s\", status=inserted", name, filename);
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}
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if (sectors < 1)
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panic ("Illegal disk size!");
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if (strlen (filename) < 1)
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panic ("Illegal filename");
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make_image (sectors, filename);
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printf ("\nI wrote %d bytes to %s.\n", sectors*512, filename);
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printf ("\nThe following line should appear in your bochsrc:\n");
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printf (" %s\n", bochsrc_line);
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}
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