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[unix-history] / usr / src / cmd / standalone / maketape.c

#include <stdio.h>
#define MAXB 30
int mt;
int fd;
char    buf[MAXB*512];
char    name[50];
int     blksz;

main(argc, argv)
int     argc;
char    *argv[];
{
       int i, j, k;
       FILE *mf;

       if (argc != 3) {
               fprintf(stderr, "Usage: maketape tapedrive makefile\n");
               exit(0);
       }
       if ((mt = creat(argv[1], 0666)) < 0) {
               perror(argv[1]);
               exit(1);
       }
       if ((mf = fopen(argv[2], "r")) == NULL) {
               perror(argv[2]);
               exit(2);
       }

       j = 0;
       k = 0;
       for (;;) {
               if ((i = fscanf(mf, "%s %d", name, &blksz))== EOF)
                       exit(0);
               if (i != 2) {
                       fprintf(stderr, "Help! Scanf didn't read 2 things (%d)\n", i);
                       exit(1);
               }
               if (blksz <= 0 || blksz > MAXB) {
                       fprintf(stderr, "Block size %d is invalid\n", blksz);
                       continue;
               }
               if (strcmp(name, "*") == 0) {
                       close(mt);
                       mt = open(argv[1], 2);
                       j = 0;
                       k++;
                       continue;
               }
               fd = open(name, 0);
               if (fd < 0) {
                       perror(name);
                       continue;
               }
               printf("%s: block %d, file %d\n", name, j, k);
               while (read(fd, buf, 512*blksz) > 0) {
                       j++;
                       write(mt, buf, 512*blksz);
               }
       }
}