/*
 * No copyright is claimed.  This code is in the public domain; do with
 * it what you wish.
 */
#ifndef UTIL_LINUX_ENV_H
#define UTIL_LINUX_ENV_H

#include "c.h"
#include "nls.h"

struct ul_env_list;

extern void sanitize_env(void);
extern void __sanitize_env(struct ul_env_list **org);

extern struct ul_env_list *env_list_add_variable(struct ul_env_list *ls,
				const char *name, const char *value);

extern struct ul_env_list *env_list_add_getenv(struct ul_env_list *ls,
				const char *name, const char *dflt);
extern struct ul_env_list *env_list_add_getenvs(struct ul_env_list *ls,
				const char *str);

extern int env_list_setenv(struct ul_env_list *ls, int overwrite);
extern void env_list_free(struct ul_env_list *ls);
extern struct ul_env_list *env_list_from_fd(int pid);

extern char *safe_getenv(const char *arg);

#ifndef XSETENV_EXIT_CODE
# define XSETENV_EXIT_CODE EXIT_FAILURE
#endif

static inline void xsetenv(char const *name, char const *val, int overwrite)
{
	if (setenv(name, val, overwrite) != 0)
		err(XSETENV_EXIT_CODE, _("failed to set the %s environment variable"), name);
}

static inline int ul_remove_entry(char **argv, int remove, int last)
{
	memmove(argv + remove, argv + remove + 1, sizeof(char *) * (last - remove));
	return last - 1;
}

#endif /* UTIL_LINUX_ENV_H */