The following code prints the permission as number. Modify the code to print 10

Question

The following code prints the permission as number. Modify the code to print 10 lowest signicant binary bits (e.g., ”0110100100”) for permission.

#include #include /* needed for tat() function */ int main(int argc, char argv]) struct stat fileinfo; / returned info about file int i; it (arge 2) printf "Usage: statfile filenameln") exit (O) i-stat (argv[1,kfileinfo); printf ("Unable to tat %s ",argv[1]); exit(0) printf ("size: %dla",fileinfo.st-size); printf ("permissions : %d ",fileinfo.st-mode); printf (" last modified: %d ",fileinfo.st_ntine);

Explanation / Answer

#include <stdio.h>
#include <sys/stat.h>

int main(int argc, char *argv[]){
struct stat fileinfo;
int i;

if(argc!=2){
  printf("Usage: statfile filename ");
  exit(0);
  i=stat(argv[1],&fileinfo);
  if(i==-1){
   printf("Unable to stat %s ",argv[1]);
   exit(0);
  }
  printf("size %d ",fileinfo.st_size);
  printf("permissions %d ",fileinfo.st_mode);
  printf("File Permissions: ");
    printf( (S_ISDIR(fileinfo.st_mode)) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IRUSR) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IWUSR) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IXUSR) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IRGRP) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IWGRP) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IXGRP) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IROTH) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IWOTH) ? "1" : "0");
    printf( (fileinfo.st_mode & S_IXOTH) ? "1" : "0");
    printf(" ");
    printf("last modified %d ",fileinfo.st_mtime);

}

}

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