usr/src/sys/tahoe/stand/devcopy.c

/*      devcopy.c       1.1     86/01/12        */
/*      devcopy.c */
#define BSIZE   1024
char dev[50];
char disk[50];
char blocks[50] ;
int     fsi;
int     fso;
char    buffer[BSIZE];

main()
{
        int j, c, i, n;
        char buf[50];
        int input, output;

        do {
                printf("Source device : ");
                gets(dev);
                printf("Copy to device : ");
                gets(disk);
                printf("Number of blocks : ");
                gets(blocks);
                j = number(blocks);
                input = open(dev, 0);
                if (input <= 0) printf("Cannot open %s\n", dev);
                output = open(disk, 1);
                if (output <= 0) printf("Cannot open output\n", disk);
        } while (input <= 0 || output <= 0);

        i = 0;  /* Block number */
        n = BSIZE;
        while (n == BSIZE && i < j) {
                if (i > 0 && (i%500 == 0) ) printf("%d blocks\n", i);
                lseek (input, i*BSIZE, 0);
                n = read (input, buffer, BSIZE);
                if (n == BSIZE) {
                        lseek (output, i*BSIZE, 0);
                        n = write(output, buffer, BSIZE);
                        if (n != BSIZE) printf("Short write, block %d, %d bytes only\n",i,n);
                        i++;
                }
                else printf("Short read, block %d, %d bytes only\n",i,n);
        }
        printf ("Total of %d blocks copied\n",i);
}

int number (response)
char *response;
{
        int     i, j;

        j = 0;  /* Total */
        while (*response == ' ' || *response == '\t') response++;
        while (*response >= '0' && *response <= '9') {
                j = j*10 + *response - '0';
                response++;
        }
        return (j);
}