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Add support for a login script (in addition to the init script); Add logic so that a USB console session can connect and reconnect to the USB serial device
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5582 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
195
nshlib/nsh_script.c
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195
nshlib/nsh_script.c
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/****************************************************************************
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* apps/nshlib/nsh_script.c
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*
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* Copyright (C) 2007-2009, 2011-2013 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 NuttX 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 "nsh.h"
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#include "nsh_console.h"
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#if CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NFILE_STREAMS > 0 && !defined(CONFIG_NSH_DISABLESCRIPT)
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nsh_script
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*
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* Description:
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* Execute the NSH script at path.
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*
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****************************************************************************/
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int nsh_script(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd,
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FAR const char *path)
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{
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char *fullpath;
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FILE *stream;
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char *buffer;
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char *pret;
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int ret = ERROR;
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/* The path to the script may be relative to the current working directory */
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fullpath = nsh_getfullpath(vtbl, path);
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if (!fullpath)
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{
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return ERROR;
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}
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/* Get a reference to the common input buffer */
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buffer = nsh_linebuffer(vtbl);
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if (buffer)
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{
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/* Open the file containing the script */
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stream = fopen(fullpath, "r");
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if (!stream)
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{
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nsh_output(vtbl, g_fmtcmdfailed, cmd, "fopen", NSH_ERRNO);
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nsh_freefullpath(fullpath);
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return ERROR;
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}
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/* Loop, processing each command line in the script file (or
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* until an error occurs)
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*/
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do
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{
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/* Get the next line of input from the file */
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fflush(stdout);
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pret = fgets(buffer, CONFIG_NSH_LINELEN, stream);
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if (pret)
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{
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/* Parse process the command. NOTE: this is recursive...
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* we got to cmd_sh via a call to nsh_parse. So some
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* considerable amount of stack may be used.
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*/
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ret = nsh_parse(vtbl, buffer);
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}
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}
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while (pret && ret == OK);
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fclose(stream);
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}
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nsh_freefullpath(fullpath);
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return ret;
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}
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/****************************************************************************
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* Name: nsh_initscript
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*
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* Description:
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* Attempt to execute the configured initialization script. This script
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* should be executed once when NSH starts. nsh_initscript is idempotent
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* and may, however, be called multiple times (the script will be executed
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* once.
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*
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****************************************************************************/
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#ifdef CONFIG_NSH_ROMFSETC
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int nsh_initscript(FAR struct nsh_vtbl_s *vtbl)
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{
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static bool initialized;
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bool already;
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int ret = OK;
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/* Atomic test and set of the initialized flag */
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sched_lock();
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already = initialized;
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initialized = true;
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sched_unlock();
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/* If we have not already executed the init script, then do so now */
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if (!already)
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{
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ret = nsh_script(vtbl, "init", NSH_INITPATH);
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}
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return ret;
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}
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/****************************************************************************
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* Name: nsh_loginscript
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*
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* Description:
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* Attempt to execute the configured login script. This script
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* should be executed when each NSH session starts.
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*
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****************************************************************************/
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#ifdef CONFIG_NSH_ROMFSRC
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int nsh_loginscript(FAR struct nsh_vtbl_s *vtbl)
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{
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return nsh_script(vtbl, "login", NSH_RCPATH);
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}
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#endif
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#endif /* CONFIG_NSH_ROMFSETC */
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#endif /* CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NFILE_STREAMS > 0 && !CONFIG_NSH_DISABLESCRIPT */
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