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Avoid truncating the pointer on x32 platform.

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The 64 bit pointer must not be cast to 32bit unsigned long on
x32 platform.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
This commit is contained in:
Tomas Mraz 2016-08-15 12:02:06 +02:00 committed by Matt Caswell
parent e7e5d608fb
commit 40c60b0d73
1 changed files with 9 additions and 5 deletions
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14
engines/afalg/e_afalg.c
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@ -230,11 +230,15 @@ int afalg_fin_cipher_aio(afalg_aio *aio, int sfd, unsigned char *buf,
memset(cb, '\0', sizeof(*cb));
cb->aio_fildes = sfd;
cb->aio_lio_opcode = IOCB_CMD_PREAD;
/*
* The pointer has to be converted to unsigned value first to avoid
* sign extension on cast to 64 bit value
*/
cb->aio_buf = (uint64_t)(unsigned long)buf;
if (sizeof(buf) != sizeof(cb->aio_buf)) {
/*
* The pointer has to be converted to 32 bit unsigned value first
* to avoid sign extension on cast to 64 bit value
*/
cb->aio_buf = (uint64_t)(unsigned long)buf;
} else {
cb->aio_buf = (uint64_t)buf;
}
cb->aio_offset = 0;
cb->aio_data = 0;
cb->aio_nbytes = len;