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138 lines
4.7 KiB
138 lines
4.7 KiB
/**************************************************************************** |
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* binfmt/binfmt_loadmodule.c |
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* |
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* Copyright (C) 2009 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr> |
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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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#include <sched.h> |
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#include <debug.h> |
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#include <errno.h> |
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#include <nuttx/binfmt.h> |
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#include "binfmt_internal.h" |
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#ifndef CONFIG_BINFMT_DISABLE |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Function Prototypes |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Data |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Functions |
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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: load_module |
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* |
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* Description: |
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* Load a module into memory, bind it to an exported symbol take, and |
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* prep the module for execution. |
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* |
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* Returned Value: |
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* This is an end-user function, so it follows the normal convention: |
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* Returns 0 (OK) on success. On failure, it returns -1 (ERROR) with |
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* errno set appropriately. |
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* |
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****************************************************************************/ |
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int load_module(FAR struct binary_s *bin) |
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{ |
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FAR struct binfmt_s *binfmt; |
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int ret = -ENOENT; |
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#ifdef CONFIG_DEBUG |
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if (bin && bin->filename) |
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#endif |
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{ |
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bdbg("Loading %s\n", bin->filename); |
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/* Disabling pre-emption should be sufficient protection while |
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* accessing the list of registered binary format handlers. |
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*/ |
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sched_lock(); |
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/* Traverse the list of registered binary format handlers. Stop |
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* when either (1) a handler recognized and loads the format, or |
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* (2) no handler recognizes the format. |
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*/ |
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for (binfmt = g_binfmts; binfmt; binfmt = binfmt->next) |
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{ |
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/* Use this handler to try to load the format */ |
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ret = binfmt->load(bin); |
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if (ret == OK) |
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{ |
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/* Successfully loaded -- break out with ret == 0 */ |
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bvdbg("Successfully loaded module %s\n", bin->filename); |
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dump_module(bin); |
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break; |
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} |
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} |
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sched_unlock(); |
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} |
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/* This is an end-user function. Return failures via errno */ |
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if (ret < 0) |
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{ |
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bdbg("Returning errno %d\n", -ret); |
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errno = -ret; |
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return ERROR; |
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} |
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return OK; |
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} |
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#endif /* CONFIG_BINFMT_DISABLE */ |
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