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/*
* Check decoding of fanotify_mark syscall.
*
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
* Copyright (c) 2015-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <asm/unistd.h>
#if defined HAVE_SYS_FANOTIFY_H && defined HAVE_FANOTIFY_MARK && \
defined __NR_fanotify_mark
# include <limits.h>
# include <stdio.h>
# include <unistd.h>
# include <sys/fanotify.h>
#if XLAT_RAW
# define str_fan_mark_add "0x1"
# define str_fan_modify_ondir "0x40000002"
# define str_at_fdcwd "-100"
#elif XLAT_VERBOSE
# define str_fan_mark_add "0x1 /* FAN_MARK_ADD */"
# define str_fan_modify_ondir "0x40000002 /* FAN_MODIFY|FAN_ONDIR */"
# define str_at_fdcwd "-100 /* AT_FDCWD */"
#else
# define str_fan_mark_add "FAN_MARK_ADD"
# define str_fan_modify_ondir "FAN_MODIFY|FAN_ONDIR"
# define str_at_fdcwd "AT_FDCWD"
#endif
/* Performs fanotify_mark call via the syscall interface. */
static void
do_call(kernel_ulong_t fd, kernel_ulong_t flags, const char *flags_str,
uint64_t mask, const char *mask_str, kernel_ulong_t dirfd,
const char *dirfd_str, kernel_ulong_t path, const char *path_str)
{
long rc;
rc = syscall(__NR_fanotify_mark, fd, flags,
# if (LONG_MAX > INT_MAX) \
|| (defined __x86_64__ && defined __ILP32__) \
|| defined LINUX_MIPSN32
mask,
# else
/* arch/parisc/kernel/sys_parisc32.c, commit ab8a261b */
# ifdef HPPA
LL_VAL_TO_PAIR((mask << 32) | (mask >> 32)),
# else
LL_VAL_TO_PAIR(mask),
# endif
# endif
dirfd, path);
printf("fanotify_mark(%d, %s, %s, %s, %s) = %s\n",
(int) fd, flags_str, mask_str, dirfd_str, path_str,
sprintrc(rc));
}
struct strval {
kernel_ulong_t val;
const char *str;
};
struct strval64 {
uint64_t val;
const char *str;
};
#define STR16 "0123456789abcdef"
#define STR64 STR16 STR16 STR16 STR16
int
main(void)
{
enum {
PATH1_SIZE = 64,
};
static const kernel_ulong_t fds[] = {
(kernel_ulong_t) 0xdeadfeed12345678ULL,
F8ILL_KULONG_MASK,
(kernel_ulong_t) 0xdeb0d1edffffffffULL,
};
static const struct strval flags[] = {
{ F8ILL_KULONG_MASK, "0" },
{ (kernel_ulong_t) 0xdec0deddefaced00ULL,
"0xefaced00"
#if !XLAT_RAW
" /* FAN_MARK_??? */"
#endif
},
{ (kernel_ulong_t) 0xda7a105700000040ULL,
#if XLAT_RAW
"0x40"
#elif XLAT_VERBOSE
"0x40 /* FAN_MARK_IGNORED_SURV_MODIFY */"
#else
"FAN_MARK_IGNORED_SURV_MODIFY"
#endif
},
{ (kernel_ulong_t) 0xbadc0deddeadfeedULL,
#if XLAT_RAW || XLAT_VERBOSE
"0xdeadfeed"
#endif
#if XLAT_VERBOSE
" /* "
#endif
#if !XLAT_RAW
"FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR|"
"FAN_MARK_IGNORED_MASK|FAN_MARK_IGNORED_SURV_MODIFY|"
"FAN_MARK_FLUSH|0xdeadfe00"
#endif
#if XLAT_VERBOSE
" */"
#endif
},
};
static const struct strval64 masks[] = {
{ ARG_ULL_STR(0) },
{ 0xdeadfeedfacebeefULL,
#if XLAT_RAW || XLAT_VERBOSE
"0xdeadfeedfacebeef"
#endif
#if XLAT_VERBOSE
" /* "
#endif
#if !XLAT_RAW
"FAN_ACCESS|FAN_MODIFY|FAN_CLOSE_WRITE|FAN_OPEN|"
"FAN_ACCESS_PERM|FAN_ONDIR|FAN_EVENT_ON_CHILD|"
"0xdeadfeedb2ccbec4"
#endif
#if XLAT_VERBOSE
" */"
#endif
},
{ ARG_ULL_STR(0xffffffffb7fcbfc4)
#if !XLAT_RAW
" /* FAN_??? */"
#endif
},
};
static const struct strval dirfds[] = {
{ (kernel_ulong_t) 0xfacefeed00000001ULL, "1" },
{ (kernel_ulong_t) 0xdec0ded0ffffffffULL,
#if XLAT_RAW
"-1"
#elif XLAT_VERBOSE
"-1 /* FAN_NOFD */"
#else
"FAN_NOFD"
#endif
},
{ (kernel_ulong_t) 0xbadfacedffffff9cULL, str_at_fdcwd },
{ (kernel_ulong_t) 0xdefaced1beeff00dULL, "-1091571699" },
};
static const char str64[] = STR64;
static char bogus_path1_addr[sizeof("0x") + sizeof(void *) * 2];
static char bogus_path1_after_addr[sizeof("0x") + sizeof(void *) * 2];
char *bogus_path1 = tail_memdup(str64, PATH1_SIZE);
char *bogus_path2 = tail_memdup(str64, sizeof(str64));
struct strval paths[] = {
{ (kernel_ulong_t) 0, "NULL" },
{ (kernel_ulong_t) (uintptr_t) (bogus_path1 + PATH1_SIZE),
bogus_path1_after_addr },
{ (kernel_ulong_t) (uintptr_t) bogus_path1, bogus_path1_addr },
{ (kernel_ulong_t) (uintptr_t) bogus_path2, "\"" STR64 "\"" },
};
unsigned int i;
unsigned int j;
unsigned int k;
unsigned int l;
unsigned int m;
int rc;
snprintf(bogus_path1_addr, sizeof(bogus_path1_addr), "%p", bogus_path1);
snprintf(bogus_path1_after_addr, sizeof(bogus_path1_after_addr), "%p",
bogus_path1 + PATH1_SIZE);
rc = fanotify_mark(-1, FAN_MARK_ADD, FAN_MODIFY | FAN_ONDIR,
-100, ".");
printf("fanotify_mark(-1, %s, %s, %s, \".\") = %s\n",
str_fan_mark_add, str_fan_modify_ondir, str_at_fdcwd,
sprintrc(rc));
for (i = 0; i < ARRAY_SIZE(fds); i++) {
for (j = 0; j < ARRAY_SIZE(flags); j++) {
for (k = 0; k < ARRAY_SIZE(masks); k++) {
for (l = 0; l < ARRAY_SIZE(dirfds); l++) {
for (m = 0; m < ARRAY_SIZE(paths); m++)
do_call(fds[i],
flags[j].val,
flags[j].str,
masks[k].val,
masks[k].str,
dirfds[l].val,
dirfds[l].str,
paths[m].val,
paths[m].str);
}
}
}
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("HAVE_SYS_FANOTIFY_H && HAVE_FANOTIFY_MARK && "
"__NR_fanotify_mark")
#endif
|
