From 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:30:35 +0200 Subject: Adding upstream version 2.38.1. Signed-off-by: Daniel Baumann --- lib/exec_shell.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 lib/exec_shell.c (limited to 'lib/exec_shell.c') diff --git a/lib/exec_shell.c b/lib/exec_shell.c new file mode 100644 index 0000000..6fef6c7 --- /dev/null +++ b/lib/exec_shell.c @@ -0,0 +1,51 @@ +/* + * exec_shell() - launch a shell, else exit! + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include +#include +#include +#include +#include + +#include "nls.h" +#include "c.h" +#include "xalloc.h" + +#include "exec_shell.h" + +#define DEFAULT_SHELL "/bin/sh" + +void __attribute__((__noreturn__)) exec_shell(void) +{ + const char *shell = getenv("SHELL"); + char *shellc; + const char *shell_basename; + char *arg0; + + if (!shell) + shell = DEFAULT_SHELL; + + shellc = xstrdup(shell); + shell_basename = basename(shellc); + arg0 = xmalloc(strlen(shell_basename) + 2); + arg0[0] = '-'; + strcpy(arg0 + 1, shell_basename); + + execl(shell, arg0, (char *)NULL); + errexec(shell); +} -- cgit v1.2.3