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Rather than constructing an entire termios struct from ttydefaults.h, just let

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forkpty do it and then alter the bits that should be changed after fork. A
little neater and more portable.
This commit is contained in:
Nicholas Marriott
2009-09-16 12:35:04 +00:00
parent a6dd9e8e7e
commit 5c60162e3c
6 changed files with 29 additions and 21 deletions
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21
cmd-new-session.c
View File

@@ -21,9 +21,6 @@
#include <string.h>
#include <termios.h>
#define TTYDEFCHARS
#include <sys/ttydefaults.h>
#include "tmux.h"
/*
@@ -116,7 +113,7 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
struct session *s;
struct window *w;
struct environ env;
struct termios tio;
struct termios tio, *tiop;
const char *update;
char *overrides, *cmd, *cwd, *cause;
int detached, idx;
@@ -151,8 +148,8 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
detached = 1;
/*
* Fill in the termios settings used for new windows in this session;
* if there is a command client, use the control characters from it.
* Save the termios settings, part of which is used for new windows in
* this session.
*
* This is read again with tcgetattr() rather than using tty.tio as if
* detached, tty_open won't be called. Because of this, it must be done
@@ -162,15 +159,9 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
fatal("tcgetattr failed");
tiop = &tio;
} else
memcpy(tio.c_cc, ttydefchars, sizeof tio.c_cc);
tio.c_cc[VERASE] = '\177';
tio.c_iflag = TTYDEF_IFLAG;
tio.c_oflag = TTYDEF_OFLAG;
tio.c_lflag = TTYDEF_LFLAG;
tio.c_cflag = TTYDEF_CFLAG;
cfsetispeed(&tio, TTYDEF_SPEED);
cfsetospeed(&tio, TTYDEF_SPEED);
tiop = NULL;
/* Open the terminal if necessary. */
if (!detached && ctx->cmdclient != NULL) {
@@ -227,7 +218,7 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
/* Create the new session. */
idx = -1 - options_get_number(&global_s_options, "base-index");
s = session_create(
data->newname, cmd, cwd, &env, &tio, idx, sx, sy, &cause);
data->newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
if (s == NULL) {
ctx->error(ctx, "create session failed: %s", cause);
xfree(cause);

2
cmd-respawn-window.c
View File

@@ -76,7 +76,7 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_ctx *ctx)
TAILQ_INSERT_HEAD(&w->panes, wp, entry);
window_pane_resize(wp, w->sx, w->sy);
if (window_pane_spawn(
wp, data->arg, NULL, NULL, &env, &s->tio, &cause) != 0) {
wp, data->arg, NULL, NULL, &env, s->tio, &cause) != 0) {
ctx->error(ctx, "respawn window failed: %s", cause);
xfree(cause);
environ_free(&env);

2
cmd-split-window.c
View File

@@ -190,7 +190,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
shell = _PATH_BSHELL;
wp = window_add_pane(w, hlimit);
if (window_pane_spawn(wp, cmd, shell, cwd, &env, &s->tio, &cause) != 0)
if (window_pane_spawn(wp, cmd, shell, cwd, &env, s->tio, &cause) != 0)
goto error;
if (layout_split_pane(w->active, type, size, wp) != 0) {
cause = xstrdup("pane too small");

12
session.c
View File

@@ -139,7 +139,12 @@ session_create(const char *name, const char *cmd, const char *cwd,
environ_init(&s->environ);
if (env != NULL)
environ_copy(env, &s->environ);
memcpy(&s->tio, tio, sizeof s->tio);
s->tio = NULL;
if (tio != NULL) {
s->tio = xmalloc(sizeof *s->tio);
memcpy(s->tio, tio, sizeof *s->tio);
}
s->sx = sx;
s->sy = sy;
@@ -182,6 +187,9 @@ session_destroy(struct session *s)
while (!ARRAY_EMPTY(&sessions) && ARRAY_LAST(&sessions) == NULL)
ARRAY_TRUNC(&sessions, 1);
if (s->tio != NULL)
xfree(s->tio);
session_alert_cancel(s, NULL);
environ_free(&s->environ);
options_free(&s->options);
@@ -237,7 +245,7 @@ session_new(struct session *s,
hlimit = options_get_number(&s->options, "history-limit");
w = window_create(
name, cmd, shell, cwd, &env, &s->tio, s->sx, s->sy, hlimit, cause);
name, cmd, shell, cwd, &env, s->tio, s->sx, s->sy, hlimit, cause);
if (w == NULL) {
environ_free(&env);
return (NULL);

2
tmux.h
View File

@@ -815,7 +815,7 @@ struct session {
#define SESSION_DEAD 0x2
int flags;
struct termios tio;
struct termios *tio;
struct environ environ;

11
window.c
View File

@@ -454,6 +454,7 @@ window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
struct environ_entry *envent;
const char *ptr;
struct timeval tv;
struct termios tio2;
u_int i;
if (wp->fd != -1)
@@ -484,7 +485,7 @@ window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
tv.tv_usec = NAME_INTERVAL * 1000L;
timeradd(&wp->window->name_timer, &tv, &wp->window->name_timer);
switch (wp->pid = forkpty(&wp->fd, wp->tty, tio, &ws)) {
switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
case -1:
wp->fd = -1;
xasprintf(cause, "%s: %s", cmd, strerror(errno));
@@ -493,6 +494,14 @@ window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
if (chdir(wp->cwd) != 0)
chdir("/");
if (tcgetattr(STDIN_FILENO, &tio2) != 0)
fatal("tcgetattr failed");
if (tio != NULL)
memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
tio2.c_cc[VERASE] = '\177';
if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
fatal("tcgetattr failed");
ARRAY_INIT(&varlist);
for (varp = environ; *varp != NULL; varp++) {
var = xstrdup(*varp);