diff options
Diffstat (limited to 'sntp/libopts/pgusage.c')
| -rw-r--r-- | sntp/libopts/pgusage.c | 99 |
1 files changed, 41 insertions, 58 deletions
diff --git a/sntp/libopts/pgusage.c b/sntp/libopts/pgusage.c index c417c63d5c5f..2e2194867e38 100644 --- a/sntp/libopts/pgusage.c +++ b/sntp/libopts/pgusage.c @@ -1,59 +1,35 @@ -/* - * $Id: pgusage.c,v 4.12 2007/04/28 22:19:23 bkorb Exp $ - * Time-stamp: "2006-07-16 08:13:26 bkorb" +/** + * \file pgusage.c + * + * Time-stamp: "2011-03-25 17:54:41 bkorb" * * Automated Options Paged Usage module. * * This routine will run run-on options through a pager so the * user may examine, print or edit them at their leisure. - */ - -/* - * Automated Options copyright 1992-2007 Bruce Korb * - * Automated Options is free software. - * You may redistribute it and/or modify it under the terms of the - * GNU General Public License, as published by the Free Software - * Foundation; either version 2, or (at your option) any later version. + * This file is part of AutoOpts, a companion to AutoGen. + * AutoOpts is free software. + * AutoOpts is Copyright (c) 1992-2011 by Bruce Korb - all rights reserved * - * Automated Options is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * AutoOpts is available under any one of two licenses. The license + * in use must be one of these two and the choice is under the control + * of the user of the license. * - * You should have received a copy of the GNU General Public License - * along with Automated Options. See the file "COPYING". If not, - * write to: The Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. + * The GNU Lesser General Public License, version 3 or later + * See the files "COPYING.lgplv3" and "COPYING.gplv3" * - * As a special exception, Bruce Korb gives permission for additional - * uses of the text contained in his release of AutoOpts. + * The Modified Berkeley Software Distribution License + * See the file "COPYING.mbsd" * - * The exception is that, if you link the AutoOpts library with other - * files to produce an executable, this does not by itself cause the - * resulting executable to be covered by the GNU General Public License. - * Your use of that executable is in no way restricted on account of - * linking the AutoOpts library code into it. + * These files have the following md5sums: * - * This exception does not however invalidate any other reasons why - * the executable file might be covered by the GNU General Public License. - * - * This exception applies only to the code released by Bruce Korb under - * the name AutoOpts. If you copy code from other sources under the - * General Public License into a copy of AutoOpts, as the General Public - * License permits, the exception does not apply to the code that you add - * in this way. To avoid misleading anyone as to the status of such - * modified files, you must delete this exception notice from them. - * - * If you write modifications of your own for AutoOpts, it is your choice - * whether to permit this exception to apply to your modifications. - * If you do not wish that, delete this exception notice. + * 43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3 + * 06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3 + * 66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd */ -tePagerState pagerState = PAGER_STATE_INITIAL; - /*=export_func optionPagedUsage * private: * @@ -64,12 +40,16 @@ tePagerState pagerState = PAGER_STATE_INITIAL; * doc: * Run the usage output through a pager. * This is very handy if it is very long. + * This is disabled on platforms without a working fork() function. =*/ void -optionPagedUsage( tOptions* pOptions, tOptDesc* pOD ) +optionPagedUsage(tOptions* pOptions, tOptDesc* pOD) { -#if defined(__windows__) && !defined(__CYGWIN__) - (*pOptions->pUsageProc)( pOptions, EXIT_SUCCESS ); +#if ! defined(HAVE_WORKING_FORK) + if ((pOD->fOptState & OPTST_RESET) != 0) + return; + + (*pOptions->pUsageProc)(pOptions, EXIT_SUCCESS); #else static pid_t my_pid; char zPageUsage[ 1024 ]; @@ -82,42 +62,45 @@ optionPagedUsage( tOptions* pOptions, tOptDesc* pOD ) switch (pagerState) { case PAGER_STATE_INITIAL: { + if ((pOD->fOptState & OPTST_RESET) != 0) + return; + my_pid = getpid(); #ifdef HAVE_SNPRINTF snprintf(zPageUsage, sizeof(zPageUsage), "/tmp/use.%lu", (tAoUL)my_pid); #else - sprintf( zPageUsage, "/tmp/use.%lu", (tAoUL)my_pid ); + sprintf(zPageUsage, "/tmp/use.%lu", (tAoUL)my_pid); #endif - unlink( zPageUsage ); + unlink(zPageUsage); /* * Set usage output to this temporary file */ - option_usage_fp = fopen( zPageUsage, "w" FOPEN_BINARY_FLAG ); + option_usage_fp = fopen(zPageUsage, "w" FOPEN_BINARY_FLAG); if (option_usage_fp == NULL) - _exit( EXIT_FAILURE ); + _exit(EXIT_FAILURE); pagerState = PAGER_STATE_READY; /* * Set up so this routine gets called during the exit logic */ - atexit( (void(*)(void))optionPagedUsage ); + atexit((void(*)(void))optionPagedUsage); /* * The usage procedure will now put the usage information into * the temporary file we created above. */ - (*pOptions->pUsageProc)( pOptions, EXIT_SUCCESS ); + (*pOptions->pUsageProc)(pOptions, EXIT_SUCCESS); - /*NOTREACHED*/ - _exit( EXIT_FAILURE ); + /* NOTREACHED */ + _exit(EXIT_FAILURE); } case PAGER_STATE_READY: { tSCC zPage[] = "%1$s /tmp/use.%2$lu ; rm -f /tmp/use.%2$lu"; - tCC* pzPager = (tCC*)getenv( "PAGER" ); + tCC* pzPager = (tCC*)getenv("PAGER"); /* * Use the "more(1)" program if "PAGER" has not been defined @@ -131,12 +114,12 @@ optionPagedUsage( tOptions* pOptions, tOptDesc* pOD ) #ifdef HAVE_SNPRINTF snprintf(zPageUsage, sizeof(zPageUsage), zPage, pzPager, (tAoUL)my_pid); #else - sprintf( zPageUsage, zPage, pzPager, (tAoUL)my_pid ); + sprintf(zPageUsage, zPage, pzPager, (tAoUL)my_pid); #endif - fclose( stderr ); - dup2( STDOUT_FILENO, STDERR_FILENO ); + fclose(stderr); + dup2(STDOUT_FILENO, STDERR_FILENO); - (void)system( zPageUsage ); + (void)system(zPageUsage); } case PAGER_STATE_CHILD: |