// File: /workspace/github_c_makefile_star2_O2/sTeeLM[P]dwipe/pass.c
// Function: dwipe_random_verify
int dwipe_random_verify( dwipe_context_t* c )
{
/**
 * Verifies that a random pass was correctly written to the device.
 *
 */

	/* The result holder. */
	int r;

	/* The IO size. */
	size_t blocksize;

	/* The result buffer for calls to lseek. */
	loff_t offset;

	/* The input buffer. */
	char* b;

	/* The pattern buffer that is used to check the input buffer. */
	char* d;

	/* The number of bytes remaining in the pass. */
	u64 z = c->device_size;


	if( c->prng_seed.s == NULL )
	{
		dwipe_log( DWIPE_LOG_SANITY, "Null seed pointer." );
		return -1;
	}

	if( c->prng_seed.length <= 0 )
	{
		dwipe_log( DWIPE_LOG_SANITY, "The entropy length member is %i.", c->prng_seed.length );
		return -1;
	}

	/* Create the input buffer. */
	b = malloc( c->device_stat.st_blksize * 1024 );

	/* Check the memory allocation. */
	if( ! b )
	{
		dwipe_perror( errno, __FUNCTION__, "malloc" );
		dwipe_log( DWIPE_LOG_FATAL, "Unable to allocate memory for the input buffer." );
		return -1;
	}

	/* Create the pattern buffer */
	d = malloc( c->device_stat.st_blksize * 1024  );

	/* Check the memory allocation. */
	if( ! d )
	{
		dwipe_perror( errno, __FUNCTION__, "malloc" );
		dwipe_log( DWIPE_LOG_FATAL, "Unable to allocate memory for the pattern buffer." );
		return -1;
	}

	/* Reset the file pointer. */
	offset = lseek( c->device_fd, 0, SEEK_SET );

	if( offset == (loff_t)-1 )
	{
		dwipe_perror( errno, __FUNCTION__, "lseek" );
		dwipe_log( DWIPE_LOG_FATAL, "Unable to reset the '%s' file offset.", c->device_name );
		return -1;
	}

	if( offset != 0 )
	{
		/* This is system insanity. */
		dwipe_log( DWIPE_LOG_SANITY, "lseek() returned a bogus offset on '%s'.", c->device_name );
		return -1;
	}

	/* Tell our parent that we are syncing the device. */
	c->sync_status = 1;

	/* Sync the device. */
	r = fdatasync( c->device_fd );

	/* Tell our parent that we have finished syncing the device. */
	c->sync_status = 0;

	if( r != 0 )
	{
		/* FIXME: Is there a better way to handle this? */
		dwipe_perror( errno, __FUNCTION__, "fdatasync" );
		dwipe_log( DWIPE_LOG_WARNING, "Buffer flush failure on '%s'.", c->device_name );
	}

	/* Reseed the PRNG. */
	c->prng->init( &c->prng_state, &c->prng_seed );

	while( z > 0 )
	{
		if( c->device_stat.st_blksize * 1024 < z )
		{
			blocksize = c->device_stat.st_blksize * 1024;
		}
		else
		{
			/* This is a seatbelt for buggy drivers and programming errors because */
			/* the device size should always be an even multiple of its blocksize. */
			blocksize = z;
			dwipe_log( DWIPE_LOG_WARNING,
			  "%s: The size of '%s' is not a multiple of its block size %i.",
			  __FUNCTION__, c->device_name, c->device_stat.st_blksize );
		}

		/* Fill the output buffer with the random pattern. */
		c->prng->read( &c->prng_state, d, blocksize );

		/* Read the buffer in from the device. */
		r = read( c->device_fd, b, blocksize );

		/* Check the result. */
		if( r < 0 )
		{
			dwipe_perror( errno, __FUNCTION__, "read" );
			dwipe_log( DWIPE_LOG_ERROR, "Unable to read from '%s'.", c->device_name );
			return -1;
		}

		/* Check for a partial read. */
		if( r != blocksize )
		{
			/* TODO: Handle a partial read. */

			/* The number of bytes that were not read. */
			int s = blocksize - r;

			dwipe_log( DWIPE_LOG_WARNING, "%s: Partial read from '%s', %i bytes short.", __FUNCTION__, c->device_name, s );
			
			/* Increment the error count. */
			c->verify_errors += 1;

			/* Bump the file pointer to the next block. */
			offset = lseek( c->device_fd, s, SEEK_CUR );

			if( offset == (loff_t)-1 )
			{
				dwipe_perror( errno, __FUNCTION__, "lseek" );
				dwipe_log( DWIPE_LOG_ERROR, "Unable to bump the '%s' file offset after a partial read.", c->device_name );
				return -1;
			}

		} /* partial read */

		/* Compare buffer contents. */
		if( memcmp( b, d, blocksize ) != 0 ) { c->verify_errors += 1; }

		/* Decrement the bytes remaining in this pass. */
		z -= r;

		/* Increment the total progress counters. */
		c->round_done += r;
		c->pass_done += r;

	} /* while bytes remaining */

	/* Release the buffers. */
	free( b );
	free( d );

	/* We're done. */
	return 0;

}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x18, %rsp
cmpq $0x0, 0x328(%rdi)
je 0x8c83
movq %rdi, %rbx
leaq 0x320(%rdi), %r13
cmpq $0x0, (%r13)
je 0x8c8e
movq 0x230(%rbx), %r12
movq 0x270(%rbx), %r15
shlq $0xa, %r15
movq %r15, %rdi
callq 0x3300
testq %rax, %rax
je 0x8c9f
movq %rax, %r14
movq %r15, %rdi
callq 0x3300
movq %rax, 0x8(%rsp)
testq %rax, %rax
je 0x8cc2
movl 0x8(%rbx), %edi
xorl %esi, %esi
xorl %edx, %edx
callq 0x3420
testq %rax, %rax
je 0x8cf2
cmpq $-0x1, %rax
jne 0x8e4e
callq 0x3070
movl (%rax), %edi
leaq 0x429a(%rip), %rsi      # 0xcefc
leaq 0x2130(%rip), %rdx      # 0xad99
callq 0x7600
movq 0x228(%rbx), %rdx
leaq 0x2149(%rip), %rsi      # 0xadc5
pushq $0x6
jmp 0x8ec8
leaq 0x43db(%rip), %rsi      # 0xd065
pushq $0x7
jmp 0x8ce5
leaq 0x43f1(%rip), %rsi      # 0xd086
pushq $0x7
popq %rdi
xorl %edx, %edx
jmp 0x8ec9
callq 0x3070
movl (%rax), %edi
leaq 0x424f(%rip), %rsi      # 0xcefc
leaq 0x1efc(%rip), %rdx      # 0xabb0
callq 0x7600
leaq 0x4250(%rip), %rsi      # 0xcf10
jmp 0x8ce3
callq 0x3070
movl (%rax), %edi
leaq 0x422c(%rip), %rsi      # 0xcefc
leaq 0x1ed9(%rip), %rdx      # 0xabb0
callq 0x7600
leaq 0x425d(%rip), %rsi      # 0xcf40
pushq $0x6
popq %rdi
xorl %eax, %eax
callq 0x73a8
jmp 0x8ed0
movw $0x1, 0x57c(%rbx)
movl 0x8(%rbx), %edi
callq 0x3080
andw $0x0, 0x57c(%rbx)
testl %eax, %eax
je 0x8d41
callq 0x3070
movl (%rax), %edi
leaq 0x41df(%rip), %rsi      # 0xcefc
leaq 0x424e(%rip), %rdx      # 0xcf72
callq 0x7600
movq 0x228(%rbx), %rdx
leaq 0x4245(%rip), %rsi      # 0xcf7c
pushq $0x4
popq %rdi
xorl %eax, %eax
callq 0x73a8
movq 0x318(%rbx), %rax
leaq 0x330(%rbx), %rdi
movq %rdi, 0x10(%rsp)
movq %r13, %rsi
callq *0x8(%rax)
movq 0x8(%rsp), %r13
testq %r12, %r12
je 0x8e60
movq 0x270(%rbx), %r8
movq %r8, %rbp
shlq $0xa, %rbp
cmpq %r12, %rbp
jb 0x8d9d
movq 0x228(%rbx), %rcx
pushq $0x4
popq %rdi
leaq 0x420e(%rip), %rsi      # 0xcf9a
leaq 0x4169(%rip), %rdx      # 0xcefc
xorl %eax, %eax
callq 0x73a8
movq %r12, %rbp
movq 0x318(%rbx), %rax
movq 0x10(%rsp), %rdi
movq %r13, %rsi
movq %rbp, %rdx
callq *0x10(%rax)
movl 0x8(%rbx), %edi
movq %r14, %rsi
movq %rbp, %rdx
callq 0x3240
testl %eax, %eax
js 0x8e74
movl %eax, %r15d
andl $0x7fffffff, %r15d      # imm = 0x7FFFFFFF
cmpq %rbp, %r15
je 0x8e1f
movq %rbp, %r13
subq %rax, %r13
movq 0x228(%rbx), %rcx
pushq $0x4
popq %rdi
leaq 0x4203(%rip), %rsi      # 0xcff1
leaq 0x4107(%rip), %rdx      # 0xcefc
movl %r13d, %r8d
xorl %eax, %eax
callq 0x73a8
incq 0x588(%rbx)
movl 0x8(%rbx), %edi
movslq %r13d, %rsi
movq 0x8(%rsp), %r13
pushq $0x1
popq %rdx
callq 0x3420
cmpq $-0x1, %rax
je 0x8e9e
movq %r14, %rdi
movq %r13, %rsi
movq %rbp, %rdx
callq 0x3320
testl %eax, %eax
je 0x8e38
incq 0x588(%rbx)
addq %r15, 0x340(%rbx)
subq %r15, %r12
addq %r15, 0x2f0(%rbx)
jmp 0x8d5f
movq 0x228(%rbx), %rdx
leaq 0x429c(%rip), %rsi      # 0xd0f8
pushq $0x7
jmp 0x8ec8
movq %r14, %rdi
callq 0x3060
movq %r13, %rdi
callq 0x3060
xorl %eax, %eax
jmp 0x8ed3
callq 0x3070
movl (%rax), %edi
leaq 0x407a(%rip), %rsi      # 0xcefc
leaq 0x35fe(%rip), %rdx      # 0xc487
callq 0x7600
movq 0x228(%rbx), %rdx
leaq 0x413b(%rip), %rsi      # 0xcfd7
jmp 0x8ec6
callq 0x3070
movl (%rax), %edi
leaq 0x4050(%rip), %rsi      # 0xcefc
leaq 0x1ee6(%rip), %rdx      # 0xad99
callq 0x7600
movq 0x228(%rbx), %rdx
leaq 0x4157(%rip), %rsi      # 0xd01d
pushq $0x5
popq %rdi
xorl %eax, %eax
callq 0x73a8
pushq $-0x1
popq %rax
addq $0x18, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq