Like options, move the environ struct into environ.c.

client.c

@@ -294,7 +294,7 @@ client_main(struct event_base *base, int argc, char **argv, int flags)
 	options_free(global_options);
 	options_free(global_s_options);
 	options_free(global_w_options);
-	environ_free(&global_environ);
+	environ_free(global_environ);
 
 	/* Create stdin handler. */
 	setblocking(STDIN_FILENO, 0);

cmd-attach-session.c

@@ -123,7 +123,7 @@ cmd_attach_session(struct cmd_q *cmdq, const char *tflag, int dflag, int rflag,
 		if (!Eflag) {
 			update = options_get_string(s->options,
 			    "update-environment");
-			environ_update(update, &c->environ, &s->environ);
+			environ_update(update, c->environ, s->environ);
 		}
 
 		c->session = s;
@@ -154,7 +154,7 @@ cmd_attach_session(struct cmd_q *cmdq, const char *tflag, int dflag, int rflag,
 		if (!Eflag) {
 			update = options_get_string(s->options,
 			    "update-environment");
-			environ_update(update, &c->environ, &s->environ);
+			environ_update(update, c->environ, s->environ);
 		}
 
 		c->session = s;

cmd-find.c

@@ -121,7 +121,7 @@ cmd_find_try_TMUX(struct client *c, struct window *w)
 	u_int			 session;
 	struct session		*s;
 
-	envent = environ_find(&c->environ, "TMUX");
+	envent = environ_find(c->environ, "TMUX");
 	if (envent == NULL)
 		return (NULL);
 

cmd-new-session.c

@@ -60,7 +60,7 @@ cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
 	struct client		*c = cmdq->client, *c0;
 	struct session		*s, *groupwith;
 	struct window		*w;
-	struct environ		 env;
+	struct environ		*env;
 	struct termios		 tio, *tiop;
 	const char		*newname, *target, *update, *errstr, *template;
 	const char		*path;
@@ -223,30 +223,30 @@ cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
 
 	path = NULL;
 	if (c != NULL && c->session == NULL)
-		envent = environ_find(&c->environ, "PATH");
+		envent = environ_find(c->environ, "PATH");
 	else
-		envent = environ_find(&global_environ, "PATH");
+		envent = environ_find(global_environ, "PATH");
 	if (envent != NULL)
 		path = envent->value;
 
 	/* Construct the environment. */
-	environ_init(&env);
+	env = environ_create();
 	if (c != NULL && !args_has(args, 'E')) {
 		update = options_get_string(global_s_options,
 		    "update-environment");
-		environ_update(update, &c->environ, &env);
+		environ_update(update, c->environ, env);
 	}
 
 	/* Create the new session. */
 	idx = -1 - options_get_number(global_s_options, "base-index");
-	s = session_create(newname, argc, argv, path, cwd, &env, tiop, idx, sx,
+	s = session_create(newname, argc, argv, path, cwd, env, tiop, idx, sx,
 	    sy, &cause);
+	environ_free(env);
 	if (s == NULL) {
 		cmdq_error(cmdq, "create session failed: %s", cause);
 		free(cause);
 		goto error;
 	}
-	environ_free(&env);
 
 	/* Set the initial window name if one given. */
 	if (argc >= 0 && args_has(args, 'n')) {

cmd-new-window.c

@@ -86,9 +86,9 @@ cmd_new_window_exec(struct cmd *self, struct cmd_q *cmdq)
 
 	path = NULL;
 	if (cmdq->client != NULL && cmdq->client->session == NULL)
-		envent = environ_find(&cmdq->client->environ, "PATH");
+		envent = environ_find(cmdq->client->environ, "PATH");
 	else
-		envent = environ_find(&s->environ, "PATH");
+		envent = environ_find(s->environ, "PATH");
 	if (envent != NULL)
 		path = envent->value;
 

cmd-respawn-pane.c

@@ -46,7 +46,7 @@ cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 	struct window		*w;
 	struct window_pane	*wp;
 	struct session		*s;
-	struct environ		 env;
+	struct environ		*env;
 	const char		*path;
 	char			*cause;
 	u_int			 idx;
@@ -64,10 +64,10 @@ cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 		return (CMD_RETURN_ERROR);
 	}
 
-	environ_init(&env);
+	env = environ_create();
-	environ_copy(&global_environ, &env);
+	environ_copy(global_environ, env);
-	environ_copy(&s->environ, &env);
+	environ_copy(s->environ, env);
-	server_fill_environ(s, &env);
+	server_fill_environ(s, env);
 
 	window_pane_reset_mode(wp);
 	screen_reinit(&wp->base);
@@ -75,22 +75,22 @@ cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 
 	path = NULL;
 	if (cmdq->client != NULL && cmdq->client->session == NULL)
-		envent = environ_find(&cmdq->client->environ, "PATH");
+		envent = environ_find(cmdq->client->environ, "PATH");
 	else
-		envent = environ_find(&s->environ, "PATH");
+		envent = environ_find(s->environ, "PATH");
 	if (envent != NULL)
 		path = envent->value;
 
-	if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, -1, &env,
+	if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, -1, env,
 	    s->tio, &cause) != 0) {
 		cmdq_error(cmdq, "respawn pane failed: %s", cause);
 		free(cause);
-		environ_free(&env);
+		environ_free(env);
 		return (CMD_RETURN_ERROR);
 	}
 	wp->flags |= PANE_REDRAW;
 	server_status_window(w);
 
-	environ_free(&env);
+	environ_free(env);
 	return (CMD_RETURN_NORMAL);
 }

cmd-respawn-window.c

@@ -45,7 +45,7 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
 	struct window		*w;
 	struct window_pane	*wp;
 	struct session		*s;
-	struct environ		 env;
+	struct environ		*env;
 	const char		*path;
 	char		 	*cause;
 	struct environ_entry	*envent;
@@ -64,10 +64,10 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
 		}
 	}
 
-	environ_init(&env);
+	env = environ_create();
-	environ_copy(&global_environ, &env);
+	environ_copy(global_environ, env);
-	environ_copy(&s->environ, &env);
+	environ_copy(s->environ, env);
-	server_fill_environ(s, &env);
+	server_fill_environ(s, env);
 
 	wp = TAILQ_FIRST(&w->panes);
 	TAILQ_REMOVE(&w->panes, wp, entry);
@@ -78,17 +78,17 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
 
 	path = NULL;
 	if (cmdq->client != NULL && cmdq->client->session == NULL)
-		envent = environ_find(&cmdq->client->environ, "PATH");
+		envent = environ_find(cmdq->client->environ, "PATH");
 	else
-		envent = environ_find(&s->environ, "PATH");
+		envent = environ_find(s->environ, "PATH");
 	if (envent != NULL)
 		path = envent->value;
 
-	if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, -1, &env,
+	if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, -1, env,
 	    s->tio, &cause) != 0) {
 		cmdq_error(cmdq, "respawn window failed: %s", cause);
 		free(cause);
-		environ_free(&env);
+		environ_free(env);
 		server_destroy_pane(wp);
 		return (CMD_RETURN_ERROR);
 	}
@@ -101,6 +101,6 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
 	recalculate_sizes();
 	server_redraw_window(w);
 
-	environ_free(&env);
+	environ_free(env);
 	return (CMD_RETURN_NORMAL);
 }

cmd-set-environment.c

@@ -61,11 +61,11 @@ cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
 		value = args->argv[1];
 
 	if (args_has(self->args, 'g'))
-		env = &global_environ;
+		env = global_environ;
 	else {
 		if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
 			return (CMD_RETURN_ERROR);
-		env = &s->environ;
+		env = s->environ;
 	}
 
 	if (args_has(self->args, 'u')) {

cmd-show-environment.c

@@ -91,12 +91,12 @@ cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq)
 	struct environ_entry	*envent;
 
 	if (args_has(self->args, 'g'))
-		env = &global_environ;
+		env = global_environ;
 	else {
 		s = cmd_find_session(cmdq, args_get(args, 't'), 0);
 		if (s == NULL)
 			return (CMD_RETURN_ERROR);
-		env = &s->environ;
+		env = s->environ;
 	}
 
 	if (args->argc != 0) {
@@ -109,7 +109,10 @@ cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq)
 		return (CMD_RETURN_NORMAL);
 	}
 
-	RB_FOREACH(envent, environ, env)
+	envent = environ_first(env);
+	while (envent != NULL) {
 		cmd_show_environment_print(self, cmdq, envent);
+		envent = environ_next(envent);
+	}
 	return (CMD_RETURN_NORMAL);
 }

cmd-split-window.c

@@ -52,7 +52,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
 	struct winlink		*wl;
 	struct window		*w;
 	struct window_pane	*wp, *new_wp = NULL;
-	struct environ		 env;
+	struct environ		*env;
 	const char		*cmd, *path, *shell, *template;
 	char		       **argv, *cause, *new_cause, *cp;
 	u_int			 hlimit;
@@ -67,10 +67,10 @@ cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
 	w = wl->window;
 	server_unzoom_window(w);
 
-	environ_init(&env);
+	env = environ_create();
-	environ_copy(&global_environ, &env);
+	environ_copy(global_environ, env);
-	environ_copy(&s->environ, &env);
+	environ_copy(s->environ, env);
-	server_fill_environ(s, &env);
+	server_fill_environ(s, env);
 
 	if (args->argc == 0) {
 		cmd = options_get_string(s->options, "default-command");
@@ -151,13 +151,13 @@ cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
 
 	path = NULL;
 	if (cmdq->client != NULL && cmdq->client->session == NULL)
-		envent = environ_find(&cmdq->client->environ, "PATH");
+		envent = environ_find(cmdq->client->environ, "PATH");
 	else
-		envent = environ_find(&s->environ, "PATH");
+		envent = environ_find(s->environ, "PATH");
 	if (envent != NULL)
 		path = envent->value;
 
-	if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, &env,
+	if (window_pane_spawn(new_wp, argc, argv, path, shell, cwd, env,
 	    s->tio, &cause) != 0)
 		goto error;
 
@@ -170,7 +170,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
 	} else
 		server_status_session(s);
 
-	environ_free(&env);
+	environ_free(env);
 
 	if (args_has(args, 'P')) {
 		if ((template = args_get(args, 'F')) == NULL)
@@ -193,7 +193,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
 	return (CMD_RETURN_NORMAL);
 
 error:
-	environ_free(&env);
+	environ_free(env);
 	if (new_wp != NULL) {
 		layout_close_pane(new_wp);
 		window_remove_pane(w, new_wp);

cmd-string.c

@@ -126,7 +126,7 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist, const char *file,
 				whitespace = argv[0] + strcspn(argv[0], " \t");
 				if (equals == NULL || equals > whitespace)
 					break;
-				environ_put(&global_environ, argv[0]);
+				environ_put(global_environ, argv[0]);
 				argc--;
 				memmove(argv, argv + 1, argc * (sizeof *argv));
 			}
@@ -303,7 +303,7 @@ cmd_string_variable(const char *s, size_t *p)
 	buf = xrealloc(buf, len + 1);
 	buf[len] = '\0';
 
-	envent = environ_find(&global_environ, buf);
+	envent = environ_find(global_environ, buf);
 	free(buf);
 	if (envent == NULL)
 		return (xstrdup(""));
@@ -326,7 +326,7 @@ cmd_string_expand_tilde(const char *s, size_t *p)
 
 	last = cmd_string_getc(s, p);
 	if (last == EOF || last == '/' || last == ' '|| last == '\t') {
-		envent = environ_find(&global_environ, "HOME");
+		envent = environ_find(global_environ, "HOME");
 		if (envent != NULL && *envent->value != '\0')
 			home = envent->value;
 		else if ((pw = getpwuid(getuid())) != NULL)

cmd-switch-client.c

@@ -121,7 +121,7 @@ cmd_switch_client_exec(struct cmd *self, struct cmd_q *cmdq)
 
 	if (c != NULL && !args_has(args, 'E')) {
 		update = options_get_string(s->options, "update-environment");
-		environ_update(update, &c->environ, &s->environ);
+		environ_update(update, c->environ, s->environ);
 	}
 
 	if (c->session != NULL && c->session != s)

environ.c

@@ -27,6 +27,9 @@
  * Environment - manipulate a set of environment variables.
  */
 
+RB_HEAD(environ, environ_entry);
+int	environ_cmp(struct environ_entry *, struct environ_entry *);
+RB_PROTOTYPE(environ, environ_entry, entry, environ_cmp);
 RB_GENERATE(environ, environ_entry, entry, environ_cmp);
 
 int
@@ -36,25 +39,42 @@ environ_cmp(struct environ_entry *envent1, struct environ_entry *envent2)
 }
 
 /* Initialise the environment. */
-void
+struct environ *
-environ_init(struct environ *env)
+environ_create(void)
 {
+	struct environ	*env;
+
+	env = xcalloc(1, sizeof *env);
 	RB_INIT(env);
+
+	return (env);
 }
 
 /* Free an environment. */
 void
 environ_free(struct environ *env)
 {
-	struct environ_entry	*envent;
+	struct environ_entry	*envent, *envent1;
 
-	while (!RB_EMPTY(env)) {
+	RB_FOREACH_SAFE(envent, environ, env, envent1) {
-		envent = RB_ROOT(env);
 		RB_REMOVE(environ, env, envent);
 		free(envent->name);
 		free(envent->value);
 		free(envent);
 	}
+	free(env);
+}
+
+struct environ_entry *
+environ_first(struct environ *env)
+{
+	return (RB_MIN(environ, env));
+}
+
+struct environ_entry *
+environ_next(struct environ_entry *envent)
+{
+	return (RB_NEXT(environ, env, envent));
 }
 
 /* Copy one environment into another. */

format.c

@@ -631,9 +631,9 @@ format_find(struct format_tree *ft, const char *key, int modifiers)
 	if (~modifiers & FORMAT_TIMESTRING) {
 		envent = NULL;
 		if (ft->s != NULL)
-			envent = environ_find(&ft->s->environ, key);
+			envent = environ_find(ft->s->environ, key);
 		if (envent == NULL)
-			envent = environ_find(&global_environ, key);
+			envent = environ_find(global_environ, key);
 		if (envent != NULL) {
 			found = envent->value;
 			goto found;

job.c

@@ -45,22 +45,22 @@ job_run(const char *cmd, struct session *s, int cwd,
     void (*callbackfn)(struct job *), void (*freefn)(void *), void *data)
 {
 	struct job	*job;
-	struct environ	 env;
+	struct environ	*env;
 	pid_t		 pid;
 	int		 nullfd, out[2];
 
 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, out) != 0)
 		return (NULL);
 
-	environ_init(&env);
+	env = environ_create();
-	environ_copy(&global_environ, &env);
+	environ_copy(global_environ, env);
 	if (s != NULL)
-		environ_copy(&s->environ, &env);
+		environ_copy(s->environ, env);
-	server_fill_environ(s, &env);
+	server_fill_environ(s, env);
 
 	switch (pid = fork()) {
 	case -1:
-		environ_free(&env);
+		environ_free(env);
 		close(out[0]);
 		close(out[1]);
 		return (NULL);
@@ -70,8 +70,8 @@ job_run(const char *cmd, struct session *s, int cwd,
 		if (cwd != -1 && fchdir(cwd) != 0)
 			chdir("/");
 
-		environ_push(&env);
+		environ_push(env);
-		environ_free(&env);
+		environ_free(env);
 
 		if (dup2(out[1], STDIN_FILENO) == -1)
 			fatal("dup2 failed");
@@ -96,7 +96,7 @@ job_run(const char *cmd, struct session *s, int cwd,
 	}
 
 	/* parent */
-	environ_free(&env);
+	environ_free(env);
 	close(out[1]);
 
 	job = xmalloc(sizeof *job);

server-client.c

@@ -59,7 +59,7 @@ server_client_check_nested(struct client *c)
 	if (c->tty.path == NULL)
 		return (0);
 
-	envent = environ_find(&c->environ, "TMUX");
+	envent = environ_find(c->environ, "TMUX");
 	if (envent == NULL || *envent->value == '\0')
 		return (0);
 
@@ -95,7 +95,7 @@ server_client_create(int fd)
 		fatal("gettimeofday failed");
 	memcpy(&c->activity_time, &c->creation_time, sizeof c->activity_time);
 
-	environ_init(&c->environ);
+	c->environ = environ_create();
 
 	c->fd = -1;
 	c->cwd = -1;
@@ -219,7 +219,7 @@ server_client_lost(struct client *c)
 	cmdq_free(c->cmdq);
 	c->cmdq = NULL;
 
-	environ_free(&c->environ);
+	environ_free(c->environ);
 
 	proc_remove_peer(c->peer);
 	c->peer = NULL;
@@ -1146,7 +1146,7 @@ server_client_dispatch_identify(struct client *c, struct imsg *imsg)
 		if (datalen == 0 || data[datalen - 1] != '\0')
 			fatalx("bad MSG_IDENTIFY_ENVIRON string");
 		if (strchr(data, '=') != NULL)
-			environ_put(&c->environ, data);
+			environ_put(c->environ, data);
 		log_debug("client %p IDENTIFY_ENVIRON %s", c, data);
 		break;
 	case MSG_IDENTIFY_CLIENTPID:

session.c

@@ -120,9 +120,9 @@ session_create(const char *name, int argc, char **argv, const char *path,
 	TAILQ_INIT(&s->lastw);
 	RB_INIT(&s->windows);
 
-	environ_init(&s->environ);
+	s->environ = environ_create();
 	if (env != NULL)
-		environ_copy(env, &s->environ);
+		environ_copy(env, s->environ);
 	s->options = options_create(global_s_options);
 
 	s->tio = NULL;
@@ -190,7 +190,7 @@ session_free(unused int fd, unused short events, void *arg)
 	log_debug("session %s freed (%d references)", s->name, s->references);
 
 	if (s->references == 0) {
-		environ_free(&s->environ);
+		environ_free(s->environ);
 		options_free(s->options);
 
 		free(s->name);
@@ -319,7 +319,7 @@ session_new(struct session *s, const char *name, int argc, char **argv,
 {
 	struct window	*w;
 	struct winlink	*wl;
-	struct environ	 env;
+	struct environ	*env;
 	const char	*shell;
 	u_int		 hlimit;
 
@@ -328,26 +328,26 @@ session_new(struct session *s, const char *name, int argc, char **argv,
 		return (NULL);
 	}
 
-	environ_init(&env);
+	env = environ_create();
-	environ_copy(&global_environ, &env);
+	environ_copy(global_environ, env);
-	environ_copy(&s->environ, &env);
+	environ_copy(s->environ, env);
-	server_fill_environ(s, &env);
+	server_fill_environ(s, env);
 
 	shell = options_get_string(s->options, "default-shell");
 	if (*shell == '\0' || areshell(shell))
 		shell = _PATH_BSHELL;
 
 	hlimit = options_get_number(s->options, "history-limit");
-	w = window_create(name, argc, argv, path, shell, cwd, &env, s->tio,
+	w = window_create(name, argc, argv, path, shell, cwd, env, s->tio,
 	    s->sx, s->sy, hlimit, cause);
 	if (w == NULL) {
 		winlink_remove(&s->windows, wl);
-		environ_free(&env);
+		environ_free(env);
 		return (NULL);
 	}
 	winlink_set_window(wl, w);
 	notify_window_linked(s, w);
-	environ_free(&env);
+	environ_free(env);
 
 	if (options_get_number(s->options, "set-remain-on-exit"))
 		options_set_number(w->options, "remain-on-exit", 1);

tmux.c

@@ -41,7 +41,7 @@ extern char	*malloc_options;
 struct options	*global_options;	/* server options */
 struct options	*global_s_options;	/* session options */
 struct options	*global_w_options;	/* window options */
-struct environ	 global_environ;
+struct environ	*global_environ;
 
 char		*shell_cmd;
 int		 debug_level;
@@ -275,11 +275,11 @@ main(int argc, char **argv)
 			flags |= CLIENT_UTF8;
 	}
 
-	environ_init(&global_environ);
+	global_environ = environ_create();
 	for (var = environ; *var != NULL; var++)
-		environ_put(&global_environ, *var);
+		environ_put(global_environ, *var);
 	if (getcwd(tmp, sizeof tmp) != NULL)
-		environ_set(&global_environ, "PWD", tmp);
+		environ_set(global_environ, "PWD", tmp);
 
 	global_options = options_create(NULL);
 	options_table_populate_tree(server_options_table, global_options);

tmux.h

@@ -36,6 +36,15 @@
 extern char    *__progname;
 extern char   **environ;
 
+struct client;
+struct environ;
+struct input_ctx;
+struct mouse_event;
+struct options;
+struct session;
+struct tmuxpeer;
+struct tmuxproc;
+
 /* Default global configuration file. */
 #define TMUX_CONF "/etc/tmux.conf"
 
@@ -762,9 +771,6 @@ struct screen_write_ctx {
  * Window mode. Windows can be in several modes and this is used to call the
  * right function to handle input and output.
  */
-struct client;
-struct session;
-struct mouse_event;
 struct window_mode {
 	struct screen *(*init)(struct window_pane *);
 	void	(*free)(struct window_pane *);
@@ -796,7 +802,6 @@ struct window_choose_data {
 };
 
 /* Child window structure. */
-struct input_ctx;
 struct window_pane {
 	u_int		 id;
 	u_int		 active_point;
@@ -861,7 +866,6 @@ TAILQ_HEAD(window_panes, window_pane);
 RB_HEAD(window_pane_tree, window_pane);
 
 /* Window structure. */
-struct options;
 struct window {
 	u_int		 id;
 
@@ -959,7 +963,6 @@ struct environ_entry {
 
 	RB_ENTRY(environ_entry) entry;
 };
-RB_HEAD(environ, environ_entry);
 
 /* Client session. */
 struct session_group {
@@ -998,7 +1001,7 @@ struct session {
 
 	struct termios	*tio;
 
-	struct environ	 environ;
+	struct environ	*environ;
 
 	int		 references;
 
@@ -1164,8 +1167,6 @@ struct message_entry {
 };
 
 /* Client connection. */
-struct tmuxproc;
-struct tmuxpeer;
 struct client {
 	struct tmuxpeer	*peer;
 
@@ -1177,7 +1178,7 @@ struct client {
 	struct timeval	 creation_time;
 	struct timeval	 activity_time;
 
-	struct environ	 environ;
+	struct environ	*environ;
 
 	char		*title;
 	int		 cwd;
@@ -1404,7 +1405,7 @@ struct options_table_entry {
 extern struct options *global_options;
 extern struct options *global_s_options;
 extern struct options *global_w_options;
-extern struct environ global_environ;
+extern struct environ *global_environ;
 extern char	*shell_cmd;
 extern int	 debug_level;
 extern time_t	 start_time;
@@ -1541,10 +1542,10 @@ void	job_free(struct job *);
 void	job_died(struct job *, int);
 
 /* environ.c */
-int	environ_cmp(struct environ_entry *, struct environ_entry *);
+struct environ *environ_create(void);
-RB_PROTOTYPE(environ, environ_entry, entry, environ_cmp);
-void	environ_init(struct environ *);
 void	environ_free(struct environ *);
+struct environ_entry *environ_first(struct environ *);
+struct environ_entry *environ_next(struct environ_entry *);
 void	environ_copy(struct environ *, struct environ *);
 struct environ_entry *environ_find(struct environ *, const char *);
 void	environ_set(struct environ *, const char *, const char *);