Dmitry V. Levin
d6c71dd061
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
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/*
|
|
* Check decoding of kexec_file_load syscall.
|
|
*
|
|
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
|
|
* Copyright (c) 2016-2018 The strace developers.
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "tests.h"
|
|
#include <asm/unistd.h>
|
|
#include "scno.h"
|
|
|
|
#ifdef __NR_kexec_file_load
|
|
|
|
# include <inttypes.h>
|
|
# include <stdio.h>
|
|
# include <unistd.h>
|
|
|
|
struct strval {
|
|
kernel_ulong_t val;
|
|
const char *str64;
|
|
const char *str32;
|
|
const char *str;
|
|
};
|
|
|
|
# define CMDLINE_STR "deadcodebaddatadefaced"
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
static const kernel_ulong_t bogus_kernel_fd =
|
|
(kernel_ulong_t) 0xdeadca57badda7a1ULL;
|
|
static const kernel_ulong_t bogus_initrd_fd =
|
|
(kernel_ulong_t) 0xdec0ded1defaced2ULL;
|
|
static const char cmdline_str[] = CMDLINE_STR;
|
|
static const char cmdline_short_str[] = "abcdef";
|
|
|
|
static const kernel_ulong_t cmdline_lens[] = {
|
|
0,
|
|
(kernel_ulong_t) 0xcaffeeeddeadbeefULL,
|
|
sizeof(cmdline_str),
|
|
sizeof(cmdline_str) - 1,
|
|
sizeof(cmdline_short_str),
|
|
sizeof(cmdline_short_str) - 1,
|
|
sizeof(cmdline_short_str) + 1,
|
|
};
|
|
static const struct strval flags[] = {
|
|
{ (kernel_ulong_t) 0xbadc0dedda7a1058ULL,
|
|
"0xbadc0ded", "0x",
|
|
"da7a1058 /* KEXEC_FILE_??? */" },
|
|
{ 0, "", "", "0" },
|
|
{ 0xdeadbeef, "", "", "KEXEC_FILE_UNLOAD|KEXEC_FILE_ON_CRASH|"
|
|
"KEXEC_FILE_NO_INITRAMFS|0xdeadbee8" },
|
|
};
|
|
|
|
|
|
long rc;
|
|
char *cmdline = tail_memdup(cmdline_str, sizeof(cmdline_str));
|
|
char *cmdline_short =
|
|
tail_memdup(cmdline_short_str, sizeof(cmdline_short_str));
|
|
char cmdline_ptr[sizeof("0x") + sizeof(void *) * 2];
|
|
char cmdline_short_ptr[sizeof("0x") + sizeof(void *) * 2];
|
|
unsigned int i;
|
|
unsigned int j;
|
|
|
|
struct strval cmdlines[] = {
|
|
{ (uintptr_t) NULL, "", "", "NULL" },
|
|
{ (uintptr_t) (cmdline + sizeof(cmdline_str)), "", "",
|
|
cmdline_ptr },
|
|
{ (uintptr_t) cmdline, "", "", "\"deadcodeb\"..." },
|
|
{ (uintptr_t) cmdline, "", "", "\"deadcodeb\"..." },
|
|
{ (uintptr_t) cmdline_short, "", "", "\"abcdef\\0\"" },
|
|
{ (uintptr_t) cmdline_short, "", "", "\"abcdef\"" },
|
|
{ (uintptr_t) cmdline_short, "", "", cmdline_short_ptr },
|
|
};
|
|
|
|
|
|
snprintf(cmdline_ptr, sizeof(cmdline_ptr), "%p",
|
|
cmdline + sizeof(cmdline_str));
|
|
snprintf(cmdline_short_ptr, sizeof(cmdline_short_ptr), "%p",
|
|
cmdline_short);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(flags); i++) {
|
|
for (j = 0; j < ARRAY_SIZE(cmdlines); j++) {
|
|
rc = syscall(__NR_kexec_file_load, bogus_kernel_fd,
|
|
bogus_initrd_fd, cmdline_lens[j],
|
|
cmdlines[j].val, flags[i].val);
|
|
printf("kexec_file_load(%d, %d, %llu, %s, %s%s) = %s\n",
|
|
(int) bogus_kernel_fd, (int) bogus_initrd_fd,
|
|
(unsigned long long) cmdline_lens[j],
|
|
cmdlines[j].str,
|
|
sizeof(kernel_ulong_t) == 8 ? flags[i].str64 :
|
|
flags[i].str32, flags[i].str, sprintrc(rc));
|
|
}
|
|
}
|
|
|
|
puts("+++ exited with 0 +++");
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
SKIP_MAIN_UNDEFINED("__NR_kexec_file_load");
|
|
|
|
#endif
|