2.9BSD - /usr/src/sys/stand/util/maketape.c

   1: #include <stdio.h>
   2: #define MAXB 30
   3: int mt;
   4: int fd;
   5: char    buf[MAXB*512];
   6: char    name[50];
   7: int blksz;
   8: int cnt,ii;
   9: 
  10: main(argc, argv)
  11: int argc;
  12: char    *argv[];
  13: {
  14:     int i, j, k;
  15:     FILE *mf;
  16: 
  17:     if (argc != 3) {
  18:         fprintf(stderr, "Usage: maketape tapedrive makefile\n");
  19:         exit(0);
  20:     }
  21:     if ((mt = creat(argv[1], 0666)) < 0) {
  22:         perror(argv[1]);
  23:         exit(1);
  24:     }
  25:     if ((mf = fopen(argv[2], "r")) == NULL) {
  26:         perror(argv[2]);
  27:         exit(2);
  28:     }
  29: 
  30:     j = 0;
  31:     k = 0;
  32:     for (;;) {
  33:         if ((i = fscanf(mf, "%s %d", name, &blksz))== EOF)
  34:             exit(0);
  35:         if (i != 2) {
  36:             fprintf(stderr, "Help! Scanf didn't read 2 things (%d)\n", i);
  37:             exit(1);
  38:         }
  39:         if (blksz <= 0 || blksz > MAXB) {
  40:             fprintf(stderr, "Block size %d is invalid\n", blksz);
  41:             continue;
  42:         }
  43:         if (strcmp(name, "*") == 0) {
  44:             close(mt);
  45:             sleep(3);
  46:             mt = open(argv[1], 2);
  47:             j = 0;
  48:             k++;
  49:             continue;
  50:         }
  51:         fd = open(name, 0);
  52:         if (fd < 0) {
  53:             perror(name);
  54:             continue;
  55:         }
  56:         printf("%s: block %d, file %d\n", name, j, k);
  57: 
  58:         /*
  59: 		 * wfj fix to final block output.
  60: 		 * we pad the last record with nulls
  61: 		 * (instead of the bell std. of padding with trash).
  62: 		 * this allows you to access text files on the
  63: 		 * tape without garbage at the end of the file.
  64: 		 * (note that there is no record length associated
  65: 		 *  with tape files)
  66: 		 */
  67: 
  68:         while ( (cnt=read(fd, buf, 512*blksz)) == 512*blksz) {
  69:             j++;
  70:             write(mt, buf, 512*blksz);
  71:         }
  72:         if ( cnt>0)
  73:         {
  74:             for(ii=cnt; ii < 512*blksz; ii++)
  75:                 buf[ii] = '\0';
  76:             write(mt, buf, 512*blksz);
  77:         }
  78:     }
  79: }

Defined functions

Defined variables

Defined macros