diff options
Diffstat (limited to 'nuttx/sched/env_dup.c')
-rw-r--r-- | nuttx/sched/env_dup.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/nuttx/sched/env_dup.c b/nuttx/sched/env_dup.c deleted file mode 100644 index 3b653b010..000000000 --- a/nuttx/sched/env_dup.c +++ /dev/null @@ -1,124 +0,0 @@ -/**************************************************************************** - * sched/env_dup.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> - -#ifndef CONFIG_DISABLE_ENVIRON - -#include <sys/types.h> -#include <sched.h> -#include <string.h> -#include <errno.h> - -#include <nuttx/kmalloc.h> - -#include "os_internal.h" -#include "env_internal.h" - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: env_dup - * - * Description: - * Copy the internal environment structure of a task. This is the action - * that is performed when a new task is created: The new task has a private, - * exact duplicate of the parent task's environment. - * - * Parameters: - * group The child task group to receive the newly allocated copy of the - * parent task groups environment structure. - * - * Return Value: - * zero on success - * - * Assumptions: - * Not called from an interrupt handler. - * - ****************************************************************************/ - -int env_dup(FAR struct task_group_s *group) -{ - FAR _TCB *ptcb = (FAR _TCB*)g_readytorun.head; - FAR char *envp = NULL; - size_t envlen; - int ret = OK; - - DEBUGASSERT(group && ptcb && ptcb->group); - - /* Pre-emption must be disabled throughout the following because the - * environment may be shared. - */ - - sched_lock(); - - /* Does the parent task have an environment? */ - - if (ptcb->group && ptcb->group->tg_envp) - { - /* Yes..The parent task has an environment, duplicate it */ - - envlen = ptcb->group->tg_envsize; - envp = (FAR char *)kmalloc(envlen); - if (!envp) - { - ret = -ENOMEM; - } - else - { - group->tg_envsize = envlen; - group->tg_envp = envp; - memcpy(envp, ptcb->group->tg_envp, envlen); - } - } - - sched_unlock(); - return ret; -} - -#endif /* CONFIG_DISABLE_ENVIRON */ - - - |