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collapseos/tools/blkup.c
Virgil Dupras c2b507eaff tools: improve usability on OpenBSD
So far, I hadn't managed to run those tools properly on OpenBSD. I
was too confused by its stty peculiarities. I'm still confused, but
at least I managed to make them work... most of the time...
2020-07-02 11:36:53 -04:00

66 lines
1.7 KiB
C

#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include "common.h"
/* Push specified file to specified device blk device, starting from blkno
* and upwards.
*/
int main(int argc, char **argv)
{
if (argc != 4) {
fprintf(stderr, "Usage: ./blkup device blkno fname\n");
return 1;
}
unsigned int blkno = strtol(argv[2], 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;
}
char s[0x40];
char buf[1024] = {0};
sendcmdp(fd, ": _ 1024 0 DO KEY DUP .x I BLK( + C! LOOP ;");
int returncode = 0;
while (fread(buf, 1, 1024, fp)) {
sendcmd(fd, "_");
for (int i=0; i<1024; i++) {
putchar('.');
fflush(stdout);
write(fd, &buf[i], 1);
usleep(1000); // let it breathe
mread(fd, s, 2); // read hex pair
s[2] = 0; // null terminate
unsigned char c = strtol(s, NULL, 16);
if (c != buf[i]) {
// mismatch!
fprintf(stderr, "Mismatch at bno %d (%d) %d != %d.\n", blkno, i, buf[i], c);
// we don't exit now because we need to "consume" our whole program.
returncode = 1;
}
usleep(1000); // let it breathe
}
readprompt(fd);
if (returncode) break;
memset(buf, 0, 1024);
sprintf(s, "%d BLK> ! BLK!", blkno);
sendcmdp(fd, s);
blkno++;
}
sendcmdp(fd, "FORGET _");
printf("Done!\n");
fclose(fp);
return returncode;
}