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Diffstat (limited to 'nuttx/sched/env_removevar.c')
-rw-r--r-- | nuttx/sched/env_removevar.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/nuttx/sched/env_removevar.c b/nuttx/sched/env_removevar.c deleted file mode 100644 index 811e6079e..000000000 --- a/nuttx/sched/env_removevar.c +++ /dev/null @@ -1,121 +0,0 @@ -/**************************************************************************** - * sched/env_removevar.c - * - * Copyright (C) 2007, 2009 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 <string.h> -#include <sched.h> - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: env_removevar - * - * Description: - * Remove the referenced name=value pair from the environment - * - * Parameters: - * group The task group with the environment containing the name=value pair - * pvar A pointer to the name=value pair in the restroom - * - * Return Value: - * Zero on success - * - * Assumptions: - * - Not called from an interrupt handler - * - Caller has pre-emptions disabled - * - Caller will reallocate the environment structure to the correct size - * - ****************************************************************************/ - -int env_removevar(FAR struct task_group_s *group, FAR char *pvar) -{ - FAR char *end; /* Pointer to the end+1 of the environment */ - int alloc; /* Size of the allocated environment */ - int ret = ERROR; - - DEBUGASSERT(group && pvar); - - /* Verify that the pointer lies within the environment region */ - - alloc = group->tg_envsize; /* Size of the allocated environment */ - end = &group->tg_envp[alloc]; /* Pointer to the end+1 of the environment */ - - if (pvar >= group->tg_envp && pvar < end) - { - /* Set up for the removal */ - - int len = strlen(pvar) + 1; /* Length of name=value string to remove */ - char *src = &pvar[len]; /* Address of name=value string after */ - char *dest = pvar; /* Location to move the next string */ - int count = end - src; /* Number of bytes to move (might be zero) */ - - /* Move all of the environment strings after the removed one 'down.' - * this is inefficient, but robably not high duty. - */ - - while (count-- > 0) - { - *dest++ = *src++; - } - - /* Then set to the new allocation size. The caller is expected to - * call realloc at some point but we don't do that here because the - * caller may add more stuff to the environment. - */ - - group->tg_envsize -= len; - ret = OK; - } - - return ret; -} - -#endif /* CONFIG_DISABLE_ENVIRON */ - - - |