strace/random_ioctl.c
Dmitry V. Levin d6c71dd061 Fix preprocessor indentation
Indent the C preprocessor directives to reflect their nesting
using the following script:

$ cppi -l $(git grep -El '^[[:space:]]*#[[:space:]]*(if|ifdef|ifndef|elif|else|endif|define|pragma)[[:space:]]' |grep -v '\.sh$') |while read f; do
	cppi < "$f" > "$f".cppi; mv "$f".cppi "$f"
done
2018-12-30 15:35:21 +00:00

62 lines
1.2 KiB
C

/*
* Copyright (c) 2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#include "print_fields.h"
#include <linux/types.h>
#include <linux/random.h>
#define XLAT_MACROS_ONLY
#include "xlat/random_ioctl_cmds.h"
#undef XLAT_MACROS_ONLY
/*
* RNDGETPOOL was removed in 2.6.9, so non-ancient kernels always
* return -EINVAL for that.
*/
int
random_ioctl(struct tcb *const tcp, const unsigned int code,
const kernel_ulong_t arg)
{
struct rand_pool_info info;
kernel_ulong_t buf;
switch (code) {
case RNDGETENTCNT:
if (entering(tcp))
return 0;
ATTRIBUTE_FALLTHROUGH;
case RNDADDTOENTCNT:
tprints(", ");
printnum_int(tcp, arg, "%d");
break;
case RNDADDENTROPY:
tprints(", ");
if (!umove_or_printaddr(tcp, arg, &info)) {
PRINT_FIELD_D("{", info, entropy_count);
PRINT_FIELD_D(", ", info, buf_size);
tprints(", buf=");
buf = arg + offsetof(struct rand_pool_info, buf);
printstrn(tcp, buf, info.buf_size);
tprints("}");
}
break;
/* ioctls with no parameters */
case RNDZAPENTCNT:
case RNDCLEARPOOL:
case RNDRESEEDCRNG:
break;
default:
return RVAL_DECODED;
}
return RVAL_IOCTL_DECODED;
}