/* * 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) 2015-2017 The strace developers. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #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> /* 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 /* FAN_MARK_??? */" }, { (kernel_ulong_t) 0xda7a105700000040ULL, "FAN_MARK_IGNORED_SURV_MODIFY" }, { (kernel_ulong_t) 0xbadc0deddeadfeedULL, "FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR|" "FAN_MARK_IGNORED_MASK|FAN_MARK_IGNORED_SURV_MODIFY|" "FAN_MARK_FLUSH|0xdeadfe00" }, }; static const struct strval64 masks[] = { { ARG_ULL_STR(0) }, { 0xdeadfeedfacebeefULL, "FAN_ACCESS|FAN_MODIFY|FAN_CLOSE_WRITE|FAN_OPEN|" "FAN_ACCESS_PERM|FAN_ONDIR|FAN_EVENT_ON_CHILD|" "0xdeadfeedb2ccbec4" }, { ARG_ULL_STR(0xffffffffb7fcbfc4) " /* FAN_??? */" }, }; static const struct strval dirfds[] = { { (kernel_ulong_t) 0xfacefeed00000001ULL, "1" }, { (kernel_ulong_t) 0xdec0ded0ffffffffULL, "FAN_NOFD" }, { (kernel_ulong_t) 0xbadfacedffffff9cULL, "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, FAN_MARK_ADD, FAN_MODIFY|FAN_ONDIR" ", AT_FDCWD, \".\") = %s\n", 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