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nvmseek1.c
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/*====================================================================*
*
* Copyright (c) 2013 Qualcomm Atheros, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted (subject to the limitations
* in the disclaimer below) provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Qualcomm Atheros nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
* GRANTED BY THIS LICENSE. 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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* signed nvmseek1 (signed fd, char const * filename, struct nvm_header1 * nvm_header, uint32_t imagetype);
*
* nvm.h
*
* search a thunderbolt/lightning PIB file for the next image of a
* given type; return 0 on success or -1 on failure to find another
* image of the given type;
*
* the call must provide an image header strucuture for use while
* searching; on success, that structure will contain information
* about the image and file will be positioned to the start of
* the image;
*
*
*--------------------------------------------------------------------*/
#ifndef NVMSEEK1_SOURCE
#define NVMSEEK1_SOURCE
#include <unistd.h>
#include "../tools/endian.h"
#include "../tools/error.h"
#include "../pib/pib.h"
#include "../nvm/nvm.h"
signed nvmseek1 (signed fd, char const * filename, struct nvm_header1 * nvm_header, uint32_t imagetype)
{
unsigned module = 0;
do
{
if (read (fd, nvm_header, sizeof (* nvm_header)) != sizeof (* nvm_header))
{
error (1, errno, NVM_HDR_CANTREAD, filename, module);
}
if (LE32TOH (nvm_header->HEADERVERSION) != 0x60000000)
{
error (1, errno, NVM_HDR_VERSION, filename, module);
}
if (checksum32 (nvm_header, sizeof (* nvm_header), 0))
{
error (1, 0, NVM_HDR_CHECKSUM, filename, module);
}
if (nvm_header->IMAGETYPE == imagetype)
{
return (0);
}
if (fdchecksum32 (fd, LE32TOH (nvm_header->IMAGELENGTH), nvm_header->IMAGECHECKSUM))
{
error (1, ECANCELED, NVM_IMG_CHECKSUM, filename, module);
}
module++;
}
while (~nvm_header->NEXTHEADER);
if (lseek (fd, 0, SEEK_CUR) != lseek (fd, 0, SEEK_END))
{
error (1, errno, NVM_HDR_LINK, filename, module);
}
return (-1);
}
#endif
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