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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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46
tmux.h
View File

@ -39,6 +39,7 @@
#include "array.h"
extern char *__progname;
extern char **environ;
/* Default configuration files. */
#define DEFAULT_CFG ".tmux.conf"
@ -69,6 +70,7 @@ extern char *__progname;
#define COMMAND_LENGTH 2048 /* packed argv size */
#define TERMINAL_LENGTH 128 /* length of TERM environment variable */
#define PRINT_LENGTH 512 /* printed error/message size */
#define ENVIRON_LENGTH 1024 /* environment variable length */
/* Fatal errors. */
#define fatal(msg) log_fatal("%s: %s", __func__, msg);
@ -302,6 +304,7 @@ enum msgtype {
MSG_SUSPEND,
MSG_UNLOCK,
MSG_WAKEUP,
MSG_ENVIRON
};
/*
@ -356,6 +359,10 @@ struct msg_unlock_data {
char pass[PASS_MAX];
};
struct msg_environ_data {
char var[ENVIRON_LENGTH];
};
/* Mode key commands. */
enum mode_key_cmd {
MODEKEY_NONE,
@ -765,6 +772,15 @@ struct paste_buffer {
};
ARRAY_DECL(paste_stack, struct paste_buffer *);
/* Environment variable. */
struct environ_entry {
char *name;
char *value;
RB_ENTRY(environ_entry) entry;
};
RB_HEAD(environ, environ_entry);
/* Client session. */
struct session_alert {
struct winlink *wl;
@ -792,6 +808,8 @@ struct session {
#define SESSION_UNATTACHED 0x1 /* not attached to any clients */
int flags;
struct environ environ;
};
ARRAY_DECL(sessions, struct session *);
@ -894,6 +912,8 @@ struct client {
struct buffer *in;
struct buffer *out;
struct environ environ;
char *title;
char *cwd;
@ -992,6 +1012,7 @@ struct cmd_entry {
#define CMD_CANTNEST 0x2
#define CMD_ARG1 0x4
#define CMD_ARG01 0x8
#define CMD_SENDENVIRON 0x10
int flags;
#define CMD_CHFLAG(flag) \
@ -1074,6 +1095,7 @@ extern volatile sig_atomic_t sigusr1;
extern volatile sig_atomic_t sigusr2;
extern struct options global_s_options;
extern struct options global_w_options;
extern struct environ global_environ;
extern char *cfg_file;
extern int server_locked;
extern u_int password_failures;
@ -1123,6 +1145,18 @@ char *options_get_string(struct options *, const char *);
void options_set_number(struct options *, const char *, long long);
long long options_get_number(struct options *, const char *);
/* environ.c */
int environ_cmp(struct environ_entry *, struct environ_entry *);
RB_PROTOTYPE(environ, environ_entry, entry, environ_cmp);
void environ_init(struct environ *);
void environ_free(struct environ *);
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 *);
void environ_put(struct environ *, const char *);
void environ_unset(struct environ *, const char *);
void environ_update(const char *, struct environ *, struct environ *);
/* tty.c */
u_char tty_get_acs(struct tty *, u_char);
void tty_reset(struct tty *);
@ -1285,10 +1319,12 @@ extern const struct cmd_entry cmd_send_keys_entry;
extern const struct cmd_entry cmd_send_prefix_entry;
extern const struct cmd_entry cmd_server_info_entry;
extern const struct cmd_entry cmd_set_buffer_entry;
extern const struct cmd_entry cmd_set_environment_entry;
extern const struct cmd_entry cmd_set_option_entry;
extern const struct cmd_entry cmd_set_password_entry;
extern const struct cmd_entry cmd_set_window_option_entry;
extern const struct cmd_entry cmd_show_buffer_entry;
extern const struct cmd_entry cmd_show_environment_entry;
extern const struct cmd_entry cmd_show_options_entry;
extern const struct cmd_entry cmd_show_window_options_entry;
extern const struct cmd_entry cmd_source_file_entry;
@ -1384,7 +1420,7 @@ int server_start(char *);
int server_msg_dispatch(struct client *);
/* server-fn.c */
const char **server_fill_environ(struct session *);
void server_fill_environ(struct session *, struct environ *);
void server_write_error(struct client *, const char *);
void server_write_client(
struct client *, enum msgtype, const void *, size_t);
@ -1554,8 +1590,8 @@ void winlink_stack_push(struct winlink_stack *, struct winlink *);
void winlink_stack_remove(struct winlink_stack *, struct winlink *);
int window_index(struct window *, u_int *);
struct window *window_create1(u_int, u_int);
struct window *window_create(const char *, const char *,
const char *, const char **, u_int, u_int, u_int, char **);
struct window *window_create(const char *, const char *, const char *,
struct environ *, u_int, u_int, u_int, char **);
void window_destroy(struct window *);
void window_set_active_pane(struct window *, struct window_pane *);
struct window_pane *window_add_pane(struct window *, u_int);
@ -1568,7 +1604,7 @@ void window_destroy_panes(struct window *);
struct window_pane *window_pane_create(struct window *, u_int, u_int, u_int);
void window_pane_destroy(struct window_pane *);
int window_pane_spawn(struct window_pane *,
const char *, const char *, const char **, char **);
const char *, const char *, struct environ *, char **);
void window_pane_resize(struct window_pane *, u_int, u_int);
int window_pane_set_mode(
struct window_pane *, const struct window_mode *);
@ -1648,7 +1684,7 @@ int session_alert_has(struct session *, struct winlink *, int);
int session_alert_has_window(struct session *, struct window *, int);
struct session *session_find(const char *);
struct session *session_create(const char *, const char *,
const char *, u_int, u_int, char **);
const char *, struct environ *, u_int, u_int, char **);
void session_destroy(struct session *);
int session_index(struct session *, u_int *);
struct winlink *session_new(struct session *,