241 lines
7.5 KiB
C
241 lines
7.5 KiB
C
/****************************************************************************
|
|
* system/nsh/nsh_main.c
|
|
*
|
|
* Copyright (C) 2007-2013, 2017-2018 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/boardctl.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <sched.h>
|
|
#include <errno.h>
|
|
|
|
#if defined(CONFIG_LIBC_EXECFUNCS)
|
|
# include <nuttx/symtab.h>
|
|
#endif
|
|
|
|
#include "platform/cxxinitialize.h"
|
|
|
|
#include "nshlib/nshlib.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/* Symbol table is not needed if loadable binary modules are not supported */
|
|
|
|
#if !defined(CONFIG_LIBC_EXECFUNCS)
|
|
# undef CONFIG_SYSTEM_NSH_SYMTAB
|
|
#endif
|
|
|
|
/* boardctl() support is also required for application-space symbol table
|
|
* support.
|
|
*/
|
|
|
|
#if !defined(CONFIG_LIB_BOARDCTL) || !defined(CONFIG_BOARDCTL_APP_SYMTAB)
|
|
# undef CONFIG_SYSTEM_NSH_SYMTAB
|
|
#endif
|
|
|
|
/* If a symbol table is provided by board-specific logic, then we do not
|
|
* need to do anything from the application space.
|
|
*/
|
|
|
|
#ifdef CONFIG_EXECFUNCS_HAVE_SYMTAB
|
|
# undef CONFIG_SYSTEM_NSH_SYMTAB
|
|
#endif
|
|
|
|
/* Check if we need to build in support for the system() and/or popen()
|
|
* functions. In the KERNEL build mode (only), NSH is build as a ELF
|
|
* program and must be capable of executing a single command provided
|
|
* on the command line.
|
|
*/
|
|
|
|
#undef HAVE_NSH_COMMAND
|
|
#if defined(CONFIG_SYSTEM_SYSTEM) || defined(CONFIG_SYSTEM_POPEN)
|
|
# define HAVE_NSH_COMMAND 1
|
|
#endif
|
|
|
|
/* C++ initialization requires CXX initializer support */
|
|
|
|
#if !defined(CONFIG_HAVE_CXX) || !defined(CONFIG_HAVE_CXXINITIALIZE)
|
|
# undef CONFIG_SYSTEM_NSH_CXXINITIALIZE
|
|
#endif
|
|
|
|
/* The NSH telnet console requires networking support (and TCP/IP) */
|
|
|
|
#ifndef CONFIG_NET
|
|
# undef CONFIG_NSH_TELNET
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_SYSTEM_NSH_SYMTAB)
|
|
|
|
extern const struct symtab_s CONFIG_SYSTEM_NSH_SYMTAB_ARRAYNAME[];
|
|
extern const int CONFIG_SYSTEM_NSH_SYMTAB_COUNTNAME;
|
|
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nsh_task
|
|
*
|
|
* Description:
|
|
* This is the main logic for the case of the NSH task. It will perform
|
|
* one-time NSH initialization and start an interactive session on the
|
|
* current console device.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int nsh_task(void)
|
|
{
|
|
#if defined (CONFIG_SYSTEM_NSH_SYMTAB)
|
|
struct boardioc_symtab_s symdesc;
|
|
#endif
|
|
int exitval = 0;
|
|
int ret;
|
|
|
|
#if defined(CONFIG_SYSTEM_NSH_CXXINITIALIZE)
|
|
/* Call all C++ static constructors */
|
|
|
|
up_cxxinitialize();
|
|
#endif
|
|
|
|
#if defined(CONFIG_SYSTEM_NSH_SYMTAB)
|
|
/* Make sure that we are using our symbol table */
|
|
|
|
symdesc.symtab = (FAR struct symtab_s *)CONFIG_SYSTEM_NSH_SYMTAB_ARRAYNAME; /* Discard 'const' */
|
|
symdesc.nsymbols = CONFIG_SYSTEM_NSH_SYMTAB_COUNTNAME;
|
|
|
|
boardctl(BOARDIOC_APP_SYMTAB, (uintptr_t)&symdesc);
|
|
#endif
|
|
|
|
/* Initialize the NSH library */
|
|
|
|
nsh_initialize();
|
|
|
|
#if defined(CONFIG_NSH_TELNET) && !defined(CONFIG_NETINIT_NETLOCAL)
|
|
/* If the Telnet console is selected as a front-end, then start the
|
|
* Telnet daemon UNLESS network initialization is deferred via
|
|
* CONFIG_NETINIT_NETLOCAL. In that case, the telnet daemon must be
|
|
* started manually with the telnetd command after the network has
|
|
* been initialized
|
|
*/
|
|
|
|
ret = nsh_telnetstart(AF_UNSPEC);
|
|
if (ret < 0)
|
|
{
|
|
/* The daemon is NOT running. Report the error then fail...
|
|
* either with the serial console up or just exiting.
|
|
*/
|
|
|
|
fprintf(stderr, "ERROR: Failed to start TELNET daemon: %d\n", ret);
|
|
exitval = 1;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_NSH_CONSOLE
|
|
/* If the serial console front end is selected, then run it on this thread */
|
|
|
|
ret = nsh_consolemain(0, NULL);
|
|
|
|
/* nsh_consolemain() should not return. So if we get here, something
|
|
* is wrong.
|
|
*/
|
|
|
|
fprintf(stderr, "ERROR: nsh_consolemain() returned: %d\n", ret);
|
|
exitval = 1;
|
|
#endif
|
|
|
|
return exitval;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nsh_main
|
|
****************************************************************************/
|
|
|
|
int main(int argc, FAR char *argv[])
|
|
{
|
|
struct sched_param param;
|
|
|
|
/* Check the task priority that we were started with */
|
|
|
|
sched_getparam(0, ¶m);
|
|
if (param.sched_priority != CONFIG_SYSTEM_NSH_PRIORITY)
|
|
{
|
|
/* If not then set the priority to the configured priority */
|
|
|
|
param.sched_priority = CONFIG_SYSTEM_NSH_PRIORITY;
|
|
sched_setparam(0, ¶m);
|
|
}
|
|
|
|
/* There are two modes that NSH can be executed in:
|
|
*
|
|
* 1) As a normal, interactive shell. In this case, no arguments are
|
|
* expected on the command line. OR
|
|
* 2) As a single command processor. In this case, the single command is
|
|
* is provided in argv[1].
|
|
*
|
|
* NOTE: The latter mode is only available if CONFIG_SYSTEM_NSH=m.
|
|
* In that case, this main() function will be built as a process. The
|
|
* process will be started with a command by the implementations of the
|
|
* system() and popen() interfaces.
|
|
*/
|
|
|
|
#ifdef HAVE_NSH_COMMAND
|
|
if (argc > 1)
|
|
{
|
|
return nsh_system(argc, argv);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
return nsh_task();
|
|
}
|
|
}
|