src/misc/getdomainname.c

   1 #define _GNU_SOURCE
   2 #include <unistd.h>
   3 #include <sys/utsname.h>
   4 #include <string.h>
   5 #include <errno.h>
   6
   7 int getdomainname(char *name, size_t len)
   8 {
   9         struct utsname temp;
  10         uname(&temp);
  11         if (!len || strlen(temp.domainname) >= len) {
  12                 errno = EINVAL;
  13                 return -1;
  14         }
  15         strcpy(name, temp.domainname);
  16         return 0;
  17 }