116 lines
3.8 KiB
C
116 lines
3.8 KiB
C
/****************************************************************************
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* apps/nshlib/nsh_system.c
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "nsh.h"
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#include "nsh_console.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nsh_system
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*
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* Description:
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* This is the NSH-specific implementation of the standard system()
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* command.
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*
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* NOTE: This assumes that other NSH instances have previously ran and so
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* common NSH logic is already initialized.
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*
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* Input Parameters:
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* Standard task start-up arguments. Expects argc == 2 with argv[1] being
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* the command to execute
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*
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* Returned Values:
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* EXIT_SUCCESS or EXIT_FAILURE
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*
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****************************************************************************/
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int nsh_system(int argc, FAR char *argv[])
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{
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FAR struct console_stdio_s *pstate = nsh_newconsole();
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FAR struct nsh_vtbl_s *vtbl;
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int ret = EXIT_FAILURE;
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DEBUGASSERT(pstate != NULL);
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vtbl = &pstate->cn_vtbl;
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if (argc < 2)
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{
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/* Execute the interactive shell */
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ret = nsh_session(pstate, false);
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}
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else if (strcmp(argv[1], "-h") == 0)
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{
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ret = nsh_output(vtbl, "Usage: %s [<script-path>|-c <command>]\n",
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argv[0]);
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}
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else if (strcmp(argv[1], "-c") != 0)
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{
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#if CONFIG_NFILE_STREAMS > 0 && !defined(CONFIG_NSH_DISABLESCRIPT)
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/* Execute the shell script */
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ret = nsh_script(vtbl, argv[0], argv[1]);
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#endif
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}
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else if (argc >= 3)
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{
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/* Parse process the command */
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ret = nsh_parse(vtbl, argv[2]);
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#if CONFIG_NFILE_STREAMS > 0
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fflush(pstate->cn_outstream);
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#endif
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}
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/* Exit upon return */
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nsh_exit(&pstate->cn_vtbl, ret);
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return ret;
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}
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