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- #include <stdlib.h>
- #include <stdio.h>
- #include <fcntl.h>
- #include <unistd.h>
- #include <string.h>
-
- #include "common.h"
-
- /* Pull specified block no "srcblk" from "device" into block no "dstblk" in
- * local "blkfs". If "dstblk" is omitted, it is the same as "srcblk"
- */
-
- int main(int argc, char **argv)
- {
- if ((argc != 5) && (argc != 4)) {
- fprintf(stderr, "Usage: ./blkdown device srcblk blkfs [dstblk]\n");
- return 1;
- }
- unsigned int srcblk = strtol(argv[2], NULL, 10);
- unsigned int dstblk = srcblk;
- if (argc == 5) {
- dstblk = strtol(argv[4], NULL, 10);
- }
- FILE *fp = fopen(argv[3], "r+");
- if (!fp) {
- fprintf(stderr, "Can't open %s.\n", argv[3]);
- return 1;
- }
- int fd = ttyopen(argv[1]);
- if (fd < 0) {
- fprintf(stderr, "Could not open %s\n", argv[1]);
- return 1;
- }
- fseek(fp, 1024 * dstblk, SEEK_SET);
- char s[0x40];
- sprintf(s, ": _ %d BLK@ 1024 0 DO I BLK( + C@ .x LOOP ; _", srcblk);
- sendcmd(fd, s);
-
- int returncode = 0;
- for (int i=0; i<1024; i++) {
- usleep(1000); // let it breathe
- mread(fd, s, 2); // read hex pair
- s[2] = 0; // null terminate
- char *endptr = NULL;
- unsigned char c = strtol(s, &endptr, 16);
- if (endptr != &s[2]) {
- fprintf(stderr, "Non-hex value (%s) at index %d.\n", s, i);
- // we don't exit now because we need to "consume" our whole program.
- returncode = 1;
- }
- if (returncode == 0) {
- fwrite(&c, 1, 1, fp);
- }
- }
- readprompt(fd);
- sendcmdp(fd, "FORGET _");
- printf("Done!\n");
- fclose(fp);
- return returncode;
- }
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