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Implement redirection of output from NSH builtin commands to a file in a mounted volume

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5521 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2013-01-15 21:01:37 +00:00
parent 284e90df29
commit b81afc12fd
12 changed files with 996 additions and 673 deletions
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95
nshlib/nsh_parse.c
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@@ -1,7 +1,7 @@
/****************************************************************************
* apps/nshlib/nsh_parse.c
*
* Copyright (C) 2007-2012 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -72,7 +72,7 @@
/* Argument list size
*
* argv[0]: The command name.
* argv[0]: The command name.
* argv[1]: The beginning of argument (up to CONFIG_NSH_MAXARGUMENTS)
* argv[argc-3]: Possibly '>' or '>>'
* argv[argc-2]: Possibly <file>
@@ -226,7 +226,7 @@ static const struct cmdmap_s g_cmdmap[] =
{ "help", cmd_help, 1, 3, "[-v] [<cmd>]" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_HEXDUMP
{ "hexdump", cmd_hexdump, 2, 2, "<file or device>" },
@@ -723,15 +723,11 @@ static int cmd_exit(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
* Name: nsh_execute
*
* Description:
* Exectue the command in argv[0]
* Execute the command in argv[0]
*
* Returned Value:
* <0 If exec_builtin() fails, then the negated errno value
* is returned.
* -1 (ERRROR) if the command was unsuccessful
* 0 (OK) if the command was successful
* 1 if an application task was spawned successfully, but
* returned failure exit status.
*
****************************************************************************/
@@ -751,21 +747,6 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl, int argc, char *argv[])
*/
cmd = argv[0];
/* Try to find a command in the application library. */
#ifdef CONFIG_NSH_BUILTIN_APPS
ret = nsh_execapp(vtbl, cmd, argv);
/* If the built-in application was successfully started, return OK
* or 1 (if the application returned a non-zero exit status).
*/
if (ret >= 0)
{
return ret;
}
#endif
/* See if the command is one that we understand */
@@ -1352,7 +1333,7 @@ int nsh_parse(FAR struct nsh_vtbl_s *vtbl, char *cmdline)
/* Parse all of the arguments following the command name. The form
* of argv is:
*
* argv[0]: The command name.
* argv[0]: The command name.
* argv[1]: The beginning of argument (up to CONFIG_NSH_MAXARGUMENTS)
* argv[argc-3]: Possibly '>' or '>>'
* argv[argc-2]: Possibly <file>
@@ -1410,6 +1391,47 @@ int nsh_parse(FAR struct nsh_vtbl_s *vtbl, char *cmdline)
}
}
/* Check if the maximum number of arguments was exceeded */
if (argc > CONFIG_NSH_MAXARGUMENTS)
{
nsh_output(vtbl, g_fmttoomanyargs, cmd);
}
/* Does this command correspond to a builtin command?
* nsh_builtin() returns:
*
* -1 (ERROR) if the application task corresponding to 'argv[0]' could not
* be started (possibly because it doesn not exist).
* 0 (OK) if the application task corresponding to 'argv[0]' was
* and successfully started. If CONFIG_SCHED_WAITPID is
* defined, this return value also indicates that the
* application returned successful status (EXIT_SUCCESS)
* 1 If CONFIG_SCHED_WAITPID is defined, then this return value
* indicates that the application task was spawned successfully
* but returned failure exit status.
*
* Note the priority if not effected by nice-ness.
*/
#ifdef CONFIG_NSH_BUILTIN_APPS
ret = nsh_builtin(vtbl, argv[0], argv, redirfile, oflags);
if (ret >= 0)
{
/* nsh_builtin() returned 0 or 1. This means that the builtin
* command was successfully started (although it may not have ran
* successfully). So certainly it is not an NSH command.
*/
return nsh_saveresult(vtbl, ret != OK);
}
/* No, not a built in command (or, at least, we were unable to start a
* builtin command of that name). Treat it like an NSH command.
*/
#endif
/* Redirected output? */
if (vtbl->np.np_redirect)
@@ -1431,23 +1453,13 @@ int nsh_parse(FAR struct nsh_vtbl_s *vtbl, char *cmdline)
}
}
/* Check if the maximum number of arguments was exceeded */
if (argc > CONFIG_NSH_MAXARGUMENTS)
{
nsh_output(vtbl, g_fmttoomanyargs, cmd);
}
/* Handle the case where the command is executed in background.
* However is app is to be started as builtin new process will
* be created anyway, so skip this step. */
* be created anyway, so skip this step.
*/
#ifndef CONFIG_NSH_DISABLEBG
if (vtbl->np.np_bg
#ifdef CONFIG_NSH_BUILTIN_APPS
&& builtin_isavail(argv[0]) < 0
#endif
)
if (vtbl->np.np_bg)
{
struct sched_param param;
struct nsh_vtbl_s *bkgvtbl;
@@ -1514,6 +1526,7 @@ int nsh_parse(FAR struct nsh_vtbl_s *vtbl, char *cmdline)
priority = min_priority;
}
}
param.sched_priority = priority;
}
@@ -1553,8 +1566,6 @@ int nsh_parse(FAR struct nsh_vtbl_s *vtbl, char *cmdline)
*
* -1 (ERRROR) if the command was unsuccessful
* 0 (OK) if the command was successful
* 1 if an application task was spawned successfully, but
* returned failure exit status.
*/
ret = nsh_execute(vtbl, argc, argv);
@@ -1568,11 +1579,11 @@ int nsh_parse(FAR struct nsh_vtbl_s *vtbl, char *cmdline)
nsh_undirect(vtbl, save);
}
/* Treat both errors and non-zero return codes as "errors" so that
* it is possible to test for non-zero returns in nsh scripts.
/* Mark errors so that it is possible to test for non-zero return values
* in nsh scripts.
*/
if (ret != OK)
if (ret < 0)
{
goto errout;
}