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tools/blkup: add shortcut for zero blocks
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commit
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@ -3,6 +3,7 @@
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdbool.h>
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#include "common.h"
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@ -30,29 +31,43 @@ int main(int argc, char **argv)
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char s[0x40];
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char buf[1024] = {0};
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sendcmdp(fd, ": _ 1024 0 DO KEY DUP .x I BLK( + C! LOOP ;");
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sendcmdp(fd, ": Z BLK( 1024 0 FILL ;");
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int returncode = 0;
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while (fread(buf, 1, 1024, fp)) {
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sendcmd(fd, "_");
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bool allzero = true;
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for (int i=0; i<1024; i++) {
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putchar('.');
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fflush(stdout);
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write(fd, &buf[i], 1);
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usleep(1000); // let it breathe
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mread(fd, s, 2); // read hex pair
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s[2] = 0; // null terminate
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unsigned char c = strtol(s, NULL, 16);
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if (c != buf[i]) {
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// mismatch!
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fprintf(stderr, "Mismatch at bno %d (%d) %d != %d.\n", blkno, i, buf[i], c);
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// we don't exit now because we need to "consume" our whole program.
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returncode = 1;
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if (buf[i] != 0) {
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allzero = false;
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break;
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}
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usleep(1000); // let it breathe
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}
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readprompt(fd);
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if (returncode) break;
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memset(buf, 0, 1024);
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if (allzero) {
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sendcmdp(fd, "Z");
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putchar('Z');
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fflush(stdout);
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} else {
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sendcmd(fd, "_");
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for (int i=0; i<1024; i++) {
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putchar('.');
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fflush(stdout);
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write(fd, &buf[i], 1);
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usleep(1000); // let it breathe
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mread(fd, s, 2); // read hex pair
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s[2] = 0; // null terminate
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unsigned char c = strtol(s, NULL, 16);
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if (c != buf[i]) {
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// mismatch!
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fprintf(stderr, "Mismatch at bno %d (%d) %d != %d.\n", blkno, i, buf[i], c);
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// we don't exit now because we need to "consume" our whole program.
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returncode = 1;
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}
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usleep(1000); // let it breathe
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}
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readprompt(fd);
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if (returncode) break;
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memset(buf, 0, 1024);
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}
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sprintf(s, "%d BLK> ! BLK!", blkno);
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sendcmdp(fd, s);
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blkno++;
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