lib/get_gid.c

   1 /*
   2  * SPDX-FileCopyrightText: 2009       , Nicolas François
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6
   7
   8 #include <config.h>
   9
  10 #ident "$Id$"
  11
  12 #include "prototypes.h"
  13 #include "defines.h"
  14
  15
  16 int
  17 get_gid(const char *gidstr, gid_t *gid)
  18 {
  19         char       *end;
  20         long long  val;
  21
  22         errno = 0;
  23         val = strtoll(gidstr, &end, 10);
  24         if (   ('\0' == *gidstr)
  25             || ('\0' != *end)
  26             || (0 != errno)
  27             || (/*@+longintegral@*/val != (gid_t)val)/*@=longintegral@*/) {
  28                 return -1;
  29         }
  30
  31         *gid = val;
  32         return 0;
  33 }
  34