external/bsd/bind/dist/bin/confgen/unix/os.c

   1 /*      $NetBSD: os.c,v 1.4 2014/12/10 04:37:51 christos Exp $  */
   2
   3 /*
   4  * Copyright (C) 2009  Internet Systems Consortium, Inc. ("ISC")
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  11  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  12  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  13  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  14  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  15  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  16  * PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 /* Id: os.c,v 1.3 2009/06/11 23:47:55 tbox Exp  */
  20
  21 /*! \file */
  22
  23 #include <config.h>
  24
  25 #include <confgen/os.h>
  26
  27 #include <fcntl.h>
  28 #include <unistd.h>
  29 #include <sys/types.h>
  30 #include <pwd.h>
  31 #include <errno.h>
  32 #include <stdio.h>
  33 #include <sys/stat.h>
  34
  35 int
  36 set_user(FILE *fd, const char *user) {
  37         struct passwd *pw;
  38
  39         pw = getpwnam(user);
  40         if (pw == NULL) {
  41                 errno = EINVAL;
  42                 return (-1);
  43         }
  44         return (fchown(fileno(fd), pw->pw_uid, -1));
  45 }