src/basic/set.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2017 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include "set.h"
  21
  22 int set_make(Set **ret, const struct hash_ops *hash_ops HASHMAP_DEBUG_PARAMS, void *add, ...) {
  23         _cleanup_set_free_ Set *s = NULL;
  24         int r;
  25
  26         assert(ret);
  27
  28         s = set_new(hash_ops HASHMAP_DEBUG_PASS_ARGS);
  29         if (!s)
  30                 return -ENOMEM;
  31
  32         if (add) {
  33                 va_list ap;
  34
  35                 r = set_put(s, add);
  36                 if (r < 0)
  37                         return r;
  38
  39                 va_start(ap, add);
  40
  41                 for(;;) {
  42                         void *arg = va_arg(ap, void*);
  43
  44                         if (!arg)
  45                                 break;
  46
  47                         r = set_put(s, arg);
  48                         if (r < 0) {
  49                                 va_end(ap);
  50                                 return r;
  51                         }
  52                 }
  53
  54                 va_end(ap);
  55         }
  56
  57         *ret = s;
  58         s = NULL;
  59
  60         return 0;
  61 }