bin/kiss-stat.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

// kiss-stat --- a utility for getting the user name of file owner
// See LICENSE for copyright information

/* The reason this simple tool exists is because 'stat' is not
 * portable and ls is not exactly stable enough for scripting.
 * This program is for outputting the owner name, and that's it.
 */

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

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

  // Exit if no or multiple arguments are given
  if (argc != 2) {
    fprintf(stderr, "Usage: %s <pathname>\n", argv[0]);
    return(1);
  }

  // Exit if file stat cannot be obtained
  if (lstat(argv[1], &sb) == -1) {
    perror(argv[0]);
    return(1);
  }

  // Print the user name of file owner
  struct passwd *pw = getpwuid(sb.st_uid);
  printf("%s\n", pw->pw_name);
  return(0);
}