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    Length: 1572 (0x624)
    Types: TextFile
    Notes: UNIX file
    Names: »mkproto.c«

└─⟦f27320a65⟧ Bits:30001972 Commodore 900 hard disk image with partial source code
    └─⟦f4b8d8c84⟧ UNIX V7 Filesystem
        └─ ⟦this⟧ »cmd/mkproto.c« 

TextFile

char helpmessage[] = "\
mkproto - insert bad blocks into a proto specification\n\
Usage: /etc/mkproto device < proto1 >proto2\n\
Standard input should specify all parts of the desired proto file except\n\
bad block specifications which mkproto will insert after scanning the\n\
specified device for unreadable blocks.\n\
If the root directory specification is missing, mkproto will append one\n\
\
";

#include <stdio.h>
#include <param.h>
#include <const.h>
#include <types.h>
#include <filsys.h>

int bdfd;
daddr_t bdsz;
char bdbf[BSIZE];
daddr_t blk;
daddr_t nbad;
long atol();
char protomessage[] = "Unexpected end of file on proto input\n";

main(argc, argv)
char *argv[];
{
	if (argc != 2)
		fatal(helpmessage);
	if ((bdfd = open(argv[1], 0)) < 0)
		fatal("Cannot open %s\n", argv[1]);
	if (gets(bdbf) == NULL)
		fatal(protomessage);
	puts(bdbf);
	if (gets(bdbf) == NULL)
		fatal(protomessage);
	bdsz = atol(bdbf);
	if (bdsz < 4)
		fatal("Preposterous block size: %D\n", bdsz);
	puts(bdbf);
	for (blk = 0; blk < bdsz; blk += 1) {
		lseek(bdfd, (long)blk*(long)BSIZE, 0);
		if (read(bdfd, bdbf, BSIZE) != BSIZE) {
			if (blk == SUPERI)
				fatal("Bad super block\n");
			if (blk == INODEI)
				fatal("Bad root inode block\n");
			if ((nbad % 8) == 0) {
				if (nbad)
					putchar('\n');
				printf("%%b");
			}
			printf(" %D", blk);
			nbad += 1;
		}
	}
	if (nbad)
		putchar('\n');
	if (gets(bdbf) == NULL)
		printf("d--755 3 1\n$\n");
	else
		do puts(bdbf); while (gets(bdbf) != NULL);
	exit (0);
}

fatal(cp)
char *cp;
{
	fprintf(stderr, "%r", &cp);
	exit (1);
}