1
0
mirror of https://github.com/hsoft/collapseos.git synced 2024-12-26 04:48:05 +11:00
collapseos/tools/blkunpack.c
Virgil Dupras 9edab10a3a blk: add dirty flag and auto write blocks on fetch
Also, fix some PSP leaks related to LOAD.
2020-04-16 20:59:20 -04:00

44 lines
960 B
C

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
void usage()
{
fprintf(stderr, "Usage: blkunpack dirname\n");
}
int main(int argc, char *argv[])
{
char buf[1024];
int blkid = 0;
if (argc != 2) {
usage();
return 1;
}
while (fread(buf, 1024, 1, stdin) == 1) {
char fullpath[0x200];
sprintf(fullpath, "%s/%03d", argv[1], blkid);
char c = 0;
for (int i=0; i<1024; i++) {
c |= buf[i];
}
if (c) {
// not an empty block
FILE *fp = fopen(fullpath, "w");
for (int i=0; i<16; i++) {
int len = strlen(&buf[i*64]);
fwrite(&buf[i*64], len, 1, fp);
fputc('\n', fp);
}
fclose(fp);
} else {
// empty block, delete
unlink(fullpath);
}
blkid++;
}
return 0;
}