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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-01-29 22:11:04 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-01-29 22:11:04 +0000 |
commit | 7f22c14077e8aa4edb0d35ca1c8a75f7a978c929 (patch) | |
tree | de34ca63f68a004de6c9d864ef380a56b870e84a /apps/nshlib/nsh_script.c | |
parent | 6ebd56f299b9f855b5bfdca3b48163f335ce44e8 (diff) | |
download | px4-firmware-7f22c14077e8aa4edb0d35ca1c8a75f7a978c929.tar.gz px4-firmware-7f22c14077e8aa4edb0d35ca1c8a75f7a978c929.tar.bz2 px4-firmware-7f22c14077e8aa4edb0d35ca1c8a75f7a978c929.zip |
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: http://svn.code.sf.net/p/nuttx/code/trunk@5582 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'apps/nshlib/nsh_script.c')
-rw-r--r-- | apps/nshlib/nsh_script.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/apps/nshlib/nsh_script.c b/apps/nshlib/nsh_script.c new file mode 100644 index 000000000..3aa698b31 --- /dev/null +++ b/apps/nshlib/nsh_script.c @@ -0,0 +1,195 @@ +/**************************************************************************** + * apps/nshlib/nsh_script.c + * + * Copyright (C) 2007-2009, 2011-2013 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 "nsh.h" +#include "nsh_console.h" + +#if CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NFILE_STREAMS > 0 && !defined(CONFIG_NSH_DISABLESCRIPT) + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nsh_script + * + * Description: + * Execute the NSH script at path. + * + ****************************************************************************/ + +int nsh_script(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd, + FAR const char *path) +{ + char *fullpath; + FILE *stream; + char *buffer; + char *pret; + int ret = ERROR; + + /* The path to the script may be relative to the current working directory */ + + fullpath = nsh_getfullpath(vtbl, path); + if (!fullpath) + { + return ERROR; + } + + /* Get a reference to the common input buffer */ + + buffer = nsh_linebuffer(vtbl); + if (buffer) + { + /* Open the file containing the script */ + + stream = fopen(fullpath, "r"); + if (!stream) + { + nsh_output(vtbl, g_fmtcmdfailed, cmd, "fopen", NSH_ERRNO); + nsh_freefullpath(fullpath); + return ERROR; + } + + /* Loop, processing each command line in the script file (or + * until an error occurs) + */ + + do + { + /* Get the next line of input from the file */ + + fflush(stdout); + pret = fgets(buffer, CONFIG_NSH_LINELEN, stream); + if (pret) + { + /* Parse process the command. NOTE: this is recursive... + * we got to cmd_sh via a call to nsh_parse. So some + * considerable amount of stack may be used. + */ + + ret = nsh_parse(vtbl, buffer); + } + } + while (pret && ret == OK); + fclose(stream); + } + + nsh_freefullpath(fullpath); + return ret; +} + +/**************************************************************************** + * Name: nsh_initscript + * + * Description: + * Attempt to execute the configured initialization script. This script + * should be executed once when NSH starts. nsh_initscript is idempotent + * and may, however, be called multiple times (the script will be executed + * once. + * + ****************************************************************************/ + +#ifdef CONFIG_NSH_ROMFSETC +int nsh_initscript(FAR struct nsh_vtbl_s *vtbl) +{ + static bool initialized; + bool already; + int ret = OK; + + /* Atomic test and set of the initialized flag */ + + sched_lock(); + already = initialized; + initialized = true; + sched_unlock(); + + /* If we have not already executed the init script, then do so now */ + + if (!already) + { + ret = nsh_script(vtbl, "init", NSH_INITPATH); + } + + return ret; +} + +/**************************************************************************** + * Name: nsh_loginscript + * + * Description: + * Attempt to execute the configured login script. This script + * should be executed when each NSH session starts. + * + ****************************************************************************/ + +#ifdef CONFIG_NSH_ROMFSRC +int nsh_loginscript(FAR struct nsh_vtbl_s *vtbl) +{ + return nsh_script(vtbl, "login", NSH_RCPATH); +} +#endif +#endif /* CONFIG_NSH_ROMFSETC */ + +#endif /* CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NFILE_STREAMS > 0 && !CONFIG_NSH_DISABLESCRIPT */ |