diff options
Diffstat (limited to 'nuttx/sched/env_setenv.c')
| -rw-r--r-- | nuttx/sched/env_setenv.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/nuttx/sched/env_setenv.c b/nuttx/sched/env_setenv.c deleted file mode 100644 index cfde71604..000000000 --- a/nuttx/sched/env_setenv.c +++ /dev/null @@ -1,207 +0,0 @@ -/**************************************************************************** - * sched/env_setenv.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 <stdio.h> -#include <stdlib.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: setenv - * - * Description: - * The setenv() function adds the variable name to the environment with the - * specified 'value' if the varialbe 'name" does not exist. If the 'name' - * does exist in the environment, then its value is changed to 'value' if - * 'overwrite' is non-zero; if 'overwrite' is zero, then the value of name - * unaltered. - * - * Parameters: - * name - The name of the variable to change - * value - The new value of the variable - * overwrite - Replace any existing value if non-zero. - * - * Return Value: - * Zero on success - * - * Assumptions: - * Not called from an interrupt handler - * - ****************************************************************************/ - -int setenv(FAR const char *name, FAR const char *value, int overwrite) -{ - FAR _TCB *rtcb; - FAR struct task_group_s *group; - FAR char *pvar; - FAR char *newenvp; - int newsize; - int varlen; - int ret = OK; - - /* Verify input parameter */ - - if (!name) - { - ret = EINVAL; - goto errout; - } - - /* if no value is provided, then this is the same as unsetenv (unless - * overwrite is false) - */ - - if (!value || *value == '\0') - { - /* If overwite is set then this is the same as unsetenv */ - - if (overwrite) - { - return unsetenv(name); - } - else - { - /* Otherwise, it is a request to remove a variable without altering it? */ - - return OK; - } - } - - /* Get a reference to the thread-private environ in the TCB.*/ - - sched_lock(); - rtcb = (FAR _TCB*)g_readytorun.head; - group = rtcb->group; - DEBUGASSERT(group); - - /* Check if the variable already exists */ - - if (group->tg_envp && (pvar = env_findvar(group, name)) != NULL) - { - /* It does! Do we have permission to overwrite the existing value? */ - - if (!overwrite) - { - /* No.. then just return success */ - - sched_unlock(); - return OK; - } - - /* Yes.. just remove the name=value pair from the environment. It will - * be added again below. Note that we are responsible for reallocating - * the environment buffer; this will happen below. - */ - - (void)env_removevar(group, pvar); - } - - /* Get the size of the new name=value string. The +2 is for the '=' and for - * null terminator - */ - - varlen = strlen(name) + strlen(value) + 2; - - /* Then allocate or reallocate the environment buffer */ - - if (group->tg_envp) - { - newsize = group->tg_envsize + varlen; - newenvp = (FAR char *)krealloc(group->tg_envp, newsize); - if (!newenvp) - { - ret = ENOMEM; - goto errout_with_lock; - } - - pvar = &newenvp[group->tg_envsize]; - } - else - { - newsize = varlen; - newenvp = (FAR char *)kmalloc(varlen); - if (!newenvp) - { - ret = ENOMEM; - goto errout_with_lock; - } - - pvar = newenvp; - } - - /* Save the new buffer and size */ - - group->tg_envp = newenvp; - group->tg_envsize = newsize; - - /* Now, put the new name=value string into the environment buffer */ - - sprintf(pvar, "%s=%s", name, value); - sched_unlock(); - return OK; - -errout_with_lock: - sched_unlock(); -errout: - errno = ret; - return ERROR; -} - -#endif /* CONFIG_DISABLE_ENVIRON */ - - - |