51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
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* exec_shell() - launch a shell, else exit!
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <libgen.h>
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#include "nls.h"
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#include "c.h"
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#include "xalloc.h"
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#include "exec_shell.h"
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#define DEFAULT_SHELL "/bin/sh"
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void exec_shell(void)
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{
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const char *shell = getenv("SHELL");
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char *shellc = xstrdup(shell);
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const char *shell_basename;
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char *arg0;
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if (!shell)
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shell = DEFAULT_SHELL;
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shell_basename = basename(shellc);
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arg0 = xmalloc(strlen(shell_basename) + 2);
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arg0[0] = '-';
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strcpy(arg0 + 1, shell_basename);
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execl(shell, arg0, NULL);
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err(EXIT_FAILURE, _("failed to execute %s"), shell);
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}
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