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Infrastructure and commands to manage the environment for processes started

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within tmux.

There is a global environment, copied from the external environment when the
server is started and each sesssion has an (initially empty) session
environment which overrides it.

New commands set-environment and show-environment manipulate or display the
environments.

A new session option, update-environment, is a space-separated list of
variables which are updated from the external environment into the session
environment every time a new session is created - the default is DISPLAY.
This commit is contained in:
Nicholas Marriott
2009-08-08 21:52:43 +00:00
parent e985629440
commit 6491274f60
19 changed files with 549 additions and 63 deletions
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67
cmd-show-environment.c Normal file
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/* $OpenBSD$ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Show environment.
*/
int cmd_show_environment_exec(struct cmd *, struct cmd_ctx *);
const struct cmd_entry cmd_show_environment_entry = {
"show-environment", "showenv",
"[-g] " CMD_TARGET_SESSION_USAGE,
0, CMD_CHFLAG('g'),
cmd_target_init,
cmd_target_parse,
cmd_show_environment_exec,
cmd_target_free,
cmd_target_print
};
int
cmd_show_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
{
struct cmd_target_data *data = self->data;
struct session *s;
struct environ *env;
struct environ_entry *envent;
if (data->chflags & CMD_CHFLAG('g'))
env = &global_environ;
else {
if ((s = cmd_find_session(ctx, data->target)) == NULL)
return (-1);
env = &s->environ;
}
RB_FOREACH(envent, environ, env) {
if (envent->value != NULL)
ctx->print(ctx, "%s=%s", envent->name, envent->value);
else
ctx->print(ctx, "-%s", envent->name);
}
return (0);
}