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/* cpt-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>
#include <string.h>
struct passwd *pw;
struct stat sb;
int
main (int argc, char *argv[])
{
/* Exit if no or multiple arguments are given. */
if (argc != 2 || strcmp(argv[1], "--help") == 0) {
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;
}
/* Exit if name of the owner cannot be retrieved. */
if (!getpwuid(sb.st_uid)) {
return 1;
}
/* Print the user name of file owner. */
pw = getpwuid(sb.st_uid);
printf("%s\n", pw->pw_name);
return 0;
}
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