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104 lines
3.2 KiB
104 lines
3.2 KiB
/**************************************************************************** |
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* env_getenvironptr.c |
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* |
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* Copyright (C) 2007, 2008, 2011 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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#ifndef CONFIG_DISABLE_ENVIRON |
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#include <sched.h> |
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#include <stdlib.h> |
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#include "os_internal.h" |
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#undef get_environ_ptr |
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/**************************************************************************** |
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* Private Data |
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****************************************************************************/ |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Name: get_environ_ptr |
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* |
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* Description: |
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* Return a pointer to the thread specific environ variable. |
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* |
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* Parameters: |
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* None |
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* |
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* Return Value: |
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* A pointer to the per-thread environ variable. |
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* |
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* Assumptions: |
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* |
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****************************************************************************/ |
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FAR char **get_environ_ptr( void ) |
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{ |
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#if 1 |
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/* Type of internal representation of environment is incompatible with |
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* char ** return value. |
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*/ |
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return NULL; |
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#else |
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/* Return a reference to the thread-private environ in the TCB.*/ |
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FAR _TCB *ptcb = (FAR _TCB*)g_readytorun.head; |
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if (ptcb->envp) |
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{ |
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return &ptcb->envp->ev_env; |
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} |
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else |
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{ |
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return NULL; |
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} |
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#endif |
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} |
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#endif /* CONFIG_DISABLE_ENVIRON */ |
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