2 * FCRON - periodic command scheduler
4 * Copyright 2000-2014 Thibault Godouet <fcron@free.fr>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * The GNU General Public License can also be found in the file
21 * `LICENSE' that comes with the fcron source distribution.
25 /* List of jobs currently being executed.
26 * This is a wrapper for an u_list (unordered list) (see u_list.h and u_list.c),
27 * to make the rest of the code clearer and as a way to ensure the compiler can checks
28 * the type in the rest of the code (u_list extensively uses the void type) */
30 #ifndef __ENV_LIST_H__
31 #define __ENV_LIST_H__
35 /* One environment variable assignation */
36 typedef struct env_t {
40 typedef struct u_list_t env_list_t;
42 /* functions prototypes */
43 extern env_list_t *env_list_init(void);
44 extern env_list_t *env_list_copy(env_list_t * list);
45 /* WARNING: - These functions are NOT re-entrant.
46 * i.e. there should always be a unique iteration loop based on
47 * u_list_first()/u_list_next() running at any one time in the code
48 * - setenv, putenv, getenv use an iteration internally
49 * so they cannot be called when already iterating */
50 extern env_t *env_list_setenv(env_list_t * list, char *name, char *value,
52 extern env_t *env_list_putenv(env_list_t * list, char *envvar, int overwrite);
53 extern char *env_list_getenv(env_list_t * list, char *name);
54 extern env_t *env_list_first(env_list_t * list);
55 extern env_t *env_list_next(env_list_t * list);
56 extern void env_list_end_iteration(env_list_t * list);
57 extern env_list_t *env_list_destroy(env_list_t * list);
59 extern char **env_list_export_envp(env_list_t * list);
60 extern void env_list_free_envp(char **envp);
63 #endif /* __ENV_LIST_H__ */