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Using -l to specify a login shell is non-POSIX and causes problems with shells

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that do not support it. Instead, set an empty default-command to invoke $SHELL
with - prefixed to argv[0], and make this the default setting.
This commit is contained in:
Nicholas Marriott 2009-07-01 19:42:55 +00:00
parent d50810267e
commit 22d1b9412e
3 changed files with 43 additions and 18 deletions
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8
tmux.1
View File

@ -1044,8 +1044,12 @@ maintain this maximum length.
Set the command used for new windows (if not specified when the window is
created) to
.Ar command .
The default is
.Dq exec $SHELL -l .
The default is an empty string, which instructs
.Nm
to create a login shell using the
.Ev SHELL
environment variable or, if it is unset, the user's shell returned by
.Xr getpwuid 3 .
.It Ic default-path Ar path
Set the default working directory for processes created from keys, or
interactively from the prompt.

15
tmux.c
View File

@ -1,4 +1,4 @@
/* $Id: tmux.c,v 1.137 2009-06-25 16:56:08 nicm Exp $ */
/* $Id: tmux.c,v 1.138 2009-07-01 19:42:55 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -218,7 +218,6 @@ main(int argc, char **argv)
struct cmd *cmd;
struct pollfd pfd;
struct hdr hdr;
const char *shell;
struct passwd *pw;
char *s, *path, *label, *cause, *home, *pass = NULL;
char cwd[MAXPATHLEN];
@ -279,6 +278,7 @@ main(int argc, char **argv)
options_init(&global_options, NULL);
options_set_number(&global_options, "bell-action", BELL_ANY);
options_set_number(&global_options, "buffer-limit", 9);
options_set_string(&global_options, "default-command", "%s", "");
options_set_number(&global_options, "display-time", 750);
options_set_number(&global_options, "history-limit", 2000);
options_set_number(&global_options, "lock-after-time", 0);
@ -368,17 +368,6 @@ main(int argc, char **argv)
}
xfree(label);
shell = getenv("SHELL");
if (shell == NULL || *shell == '\0') {
pw = getpwuid(getuid());
if (pw != NULL)
shell = pw->pw_shell;
if (shell == NULL || *shell == '\0')
shell = _PATH_BSHELL;
}
options_set_string(
&global_options, "default-command", "exec %s -l", shell);
if (getcwd(cwd, sizeof cwd) == NULL) {
pw = getpwuid(getuid());
if (pw->pw_dir != NULL && *pw->pw_dir != '\0')

36
window.c
View File

@ -1,4 +1,4 @@
/* $Id: window.c,v 1.85 2009-06-25 16:47:00 nicm Exp $ */
/* $Id: window.c,v 1.86 2009-07-01 19:42:55 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -22,6 +22,7 @@
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <pwd.h>
#include <signal.h>
#include <stdint.h>
#include <stdlib.h>
@ -53,8 +54,27 @@
/* Global window list. */
struct windows windows;
const char *window_default_command(void);
RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
const char *
window_default_command(void)
{
const char *shell;
struct passwd *pw;
shell = getenv("SHELL");
if (shell != NULL && *shell != '\0')
return (shell);
pw = getpwuid(getuid());
if (pw != NULL && pw->pw_shell != NULL && *pw->pw_shell != '\0')
return (pw->pw_shell);
return (_PATH_BSHELL);
}
int
winlink_cmp(struct winlink *wl1, struct winlink *wl2)
{
@ -422,7 +442,8 @@ window_pane_spawn(struct window_pane *wp,
{
struct winsize ws;
int mode;
const char **envq;
const char **envq, *ptr;
char *argv0;
struct timeval tv;
if (wp->fd != -1)
@ -463,10 +484,21 @@ window_pane_spawn(struct window_pane *wp,
sigreset();
log_close();
if (*wp->cmd != '\0') {
execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
fatal("execl failed");
}
/* No command; fork a login shell. */
cmd = window_default_command();
if ((ptr = strrchr(cmd, '/')) != NULL && *(ptr + 1) != '\0')
xasprintf(&argv0, "-%s", ptr + 1);
else
xasprintf(&argv0, "-%s", cmd);
execl(cmd, argv0, (char *) NULL);
fatal("execl failed");
}
if ((mode = fcntl(wp->fd, F_GETFL)) == -1)
fatal("fcntl failed");
if (fcntl(wp->fd, F_SETFL, mode|O_NONBLOCK) == -1)