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101 lines
3.7 KiB
101 lines
3.7 KiB
/**************************************************************************** |
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* binfmt/libnxflat/nxflat_verify.c |
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* |
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* Copyright (C) 2009 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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#include <string.h> |
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#include <debug.h> |
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#include <errno.h> |
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#include <arpa/inet.h> |
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#include <nuttx/binfmt/nxflat.h> |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Constant 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: nxflat_verifyheader |
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* |
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* Description: |
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* Given the header from a possible NXFLAT executable, verify that it |
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* is an NXFLAT executable. |
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* |
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* Returned Value: |
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* 0 (OK) is returned on success and a negated errno is returned on |
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* failure. |
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* |
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****************************************************************************/ |
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int nxflat_verifyheader(const struct nxflat_hdr_s *header) |
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{ |
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if (!header) |
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{ |
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bdbg("NULL NXFLAT header!"); |
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return -ENOEXEC; |
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} |
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/* Check the FLT header -- magic number and revision. |
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* |
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* If the magic number does not match. Just return |
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* silently. This is not our binary. |
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*/ |
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if (strncmp(header->h_magic, NXFLAT_MAGIC, 4) != 0) |
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{ |
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bdbg("Unrecognized magic=\"%c%c%c%c\"\n", |
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header->h_magic[0], header->h_magic[1], |
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header->h_magic[2], header->h_magic[3]); |
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return -ENOEXEC; |
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} |
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return OK; |
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}
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