194 lines
6.1 KiB
C
194 lines
6.1 KiB
C
/****************************************************************************
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* system/nsh/nsh_main.c
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*
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* Copyright (C) 2007-2013, 2017-2018 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 <sys/stat.h>
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#include <sys/boardctl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <sched.h>
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#include <errno.h>
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#if defined(CONFIG_LIBC_EXECFUNCS)
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# include <nuttx/symtab.h>
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#endif
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#include "platform/cxxinitialize.h"
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#include "nshlib/nshlib.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Symbol table is not needed if loadable binary modules are not supported */
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#if !defined(CONFIG_LIBC_EXECFUNCS)
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# undef CONFIG_SYSTEM_NSH_SYMTAB
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#endif
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/* boardctl() support is also required for application-space symbol table
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* support.
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*/
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#if !defined(CONFIG_LIB_BOARDCTL) || !defined(CONFIG_BOARDCTL_APP_SYMTAB)
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# undef CONFIG_SYSTEM_NSH_SYMTAB
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#endif
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/* If a symbol table is provided by board-specific logic, then we do not
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* need to do anything from the application space.
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*/
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#ifdef CONFIG_EXECFUNCS_HAVE_SYMTAB
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# undef CONFIG_SYSTEM_NSH_SYMTAB
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#endif
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/* C++ initialization requires CXX initializer support */
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#if !defined(CONFIG_HAVE_CXX) || !defined(CONFIG_HAVE_CXXINITIALIZE)
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# undef CONFIG_SYSTEM_NSH_CXXINITIALIZE
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#endif
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/* The NSH telnet console requires networking support (and TCP/IP) */
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#ifndef CONFIG_NET
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# undef CONFIG_NSH_TELNET
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#if defined(CONFIG_SYSTEM_NSH_SYMTAB)
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extern const struct symtab_s CONFIG_SYSTEM_NSH_SYMTAB_ARRAYNAME[];
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extern const int CONFIG_SYSTEM_NSH_SYMTAB_COUNTNAME;
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nsh_main
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*
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* Description:
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* This is the main logic for the case of the NSH task. It will perform
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* one-time NSH initialization and start an interactive session on the
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* current console device.
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*
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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#if defined (CONFIG_SYSTEM_NSH_SYMTAB)
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struct boardioc_symtab_s symdesc;
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#endif
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struct sched_param param;
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int exitval = 0;
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int ret;
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/* Check the task priority that we were started with */
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sched_getparam(0, ¶m);
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if (param.sched_priority != CONFIG_SYSTEM_NSH_PRIORITY)
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{
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/* If not then set the priority to the configured priority */
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param.sched_priority = CONFIG_SYSTEM_NSH_PRIORITY;
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sched_setparam(0, ¶m);
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}
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#if defined(CONFIG_SYSTEM_NSH_CXXINITIALIZE)
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/* Call all C++ static constructors */
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up_cxxinitialize();
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#endif
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#if defined(CONFIG_SYSTEM_NSH_SYMTAB)
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/* Make sure that we are using our symbol table */
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symdesc.symtab = (FAR struct symtab_s *)CONFIG_SYSTEM_NSH_SYMTAB_ARRAYNAME; /* Discard 'const' */
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symdesc.nsymbols = CONFIG_SYSTEM_NSH_SYMTAB_COUNTNAME;
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boardctl(BOARDIOC_APP_SYMTAB, (uintptr_t)&symdesc);
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#endif
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/* Initialize the NSH library */
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nsh_initialize();
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#if defined(CONFIG_NSH_TELNET) && !defined(CONFIG_NETINIT_NETLOCAL)
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/* If the Telnet console is selected as a front-end, then start the
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* Telnet daemon UNLESS network initialization is deferred via
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* CONFIG_NETINIT_NETLOCAL. In that case, the telnet daemon must be
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* started manually with the telnetd command after the network has
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* been initialized
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*/
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ret = nsh_telnetstart(AF_UNSPEC);
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if (ret < 0)
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{
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/* The daemon is NOT running. Report the error then fail...
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* either with the serial console up or just exiting.
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*/
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fprintf(stderr, "ERROR: Failed to start TELNET daemon: %d\n", ret);
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exitval = 1;
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}
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#endif
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#ifdef CONFIG_NSH_CONSOLE
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/* If the serial console front end is selected, run it on this thread */
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ret = nsh_consolemain(0, NULL);
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/* nsh_consolemain() should not return. So if we get here, something
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* is wrong.
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*/
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fprintf(stderr, "ERROR: nsh_consolemain() returned: %d\n", ret);
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exitval = 1;
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#endif
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return exitval;
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}
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