1d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes/* 2d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Check decoding of fanotify_mark syscall. 3d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 4d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org> 5d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com> 639bac055674d23770b9a724221b728e443196ea7Elliott Hughes * Copyright (c) 2015-2017 The strace developers. 7d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * All rights reserved. 8d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 9d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Redistribution and use in source and binary forms, with or without 10d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * modification, are permitted provided that the following conditions 11d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * are met: 12d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 1. Redistributions of source code must retain the above copyright 13d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer. 14d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 2. Redistributions in binary form must reproduce the above copyright 15d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer in the 16d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * documentation and/or other materials provided with the distribution. 17d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 3. The name of the author may not be used to endorse or promote products 18d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * derived from this software without specific prior written permission. 19d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 20d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes */ 31d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 32d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include "tests.h" 33d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 34d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <asm/unistd.h> 35d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 36d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#if defined HAVE_SYS_FANOTIFY_H && defined HAVE_FANOTIFY_MARK && \ 37d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes defined __NR_fanotify_mark 38d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 39d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# include <limits.h> 40d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# include <stdio.h> 41d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# include <unistd.h> 42d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# include <sys/fanotify.h> 43d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 44d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes/* Performs fanotify_mark call via the syscall interface. */ 45d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesstatic void 46d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesdo_call(kernel_ulong_t fd, kernel_ulong_t flags, const char *flags_str, 47d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes uint64_t mask, const char *mask_str, kernel_ulong_t dirfd, 48d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes const char *dirfd_str, kernel_ulong_t path, const char *path_str) 49d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 50d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes long rc; 51d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 52d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = syscall(__NR_fanotify_mark, fd, flags, 53d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# if (LONG_MAX > INT_MAX) \ 54d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes || (defined __x86_64__ && defined __ILP32__) \ 55d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes || defined LINUX_MIPSN32 56d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes mask, 57d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# else 58d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes/* arch/parisc/kernel/sys_parisc32.c, commit ab8a261b */ 59d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# ifdef HPPA 60d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes LL_VAL_TO_PAIR((mask << 32) | (mask >> 32)), 61d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# else 62d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes LL_VAL_TO_PAIR(mask), 63d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# endif 64d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes# endif 65d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes dirfd, path); 66d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 67d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("fanotify_mark(%d, %s, %s, %s, %s) = %s\n", 68d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes (int) fd, flags_str, mask_str, dirfd_str, path_str, 69d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes sprintrc(rc)); 70d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 71d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 72d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesstruct strval { 73d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes kernel_ulong_t val; 74d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes const char *str; 75d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes}; 76d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 77d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesstruct strval64 { 78d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes uint64_t val; 79d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes const char *str; 80d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes}; 81d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 82d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#define STR16 "0123456789abcdef" 83d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#define STR64 STR16 STR16 STR16 STR16 84d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 85d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesint 86d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesmain(void) 87d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 88d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes enum { 89d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes PATH1_SIZE = 64, 90d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes }; 91d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 92d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const kernel_ulong_t fds[] = { 93d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes (kernel_ulong_t) 0xdeadfeed12345678ULL, 9439bac055674d23770b9a724221b728e443196ea7Elliott Hughes F8ILL_KULONG_MASK, 95d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes (kernel_ulong_t) 0xdeb0d1edffffffffULL, 96d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes }; 97d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const struct strval flags[] = { 9839bac055674d23770b9a724221b728e443196ea7Elliott Hughes { F8ILL_KULONG_MASK, "0" }, 99d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0xdec0deddefaced00ULL, 100d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "0xefaced00 /* FAN_MARK_??? */" }, 101d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0xda7a105700000040ULL, 102d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "FAN_MARK_IGNORED_SURV_MODIFY" }, 103d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0xbadc0deddeadfeedULL, 104d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR|" 105d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "FAN_MARK_IGNORED_MASK|FAN_MARK_IGNORED_SURV_MODIFY|" 106d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "FAN_MARK_FLUSH|0xdeadfe00" }, 107d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes }; 108d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const struct strval64 masks[] = { 109d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { ARG_ULL_STR(0) }, 110d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { 0xdeadfeedfacebeefULL, 111d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "FAN_ACCESS|FAN_MODIFY|FAN_CLOSE_WRITE|FAN_OPEN|" 112d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "FAN_ACCESS_PERM|FAN_ONDIR|FAN_EVENT_ON_CHILD|" 113d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "0xdeadfeedb2ccbec4" }, 114d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { ARG_ULL_STR(0xffffffffb7fcbfc4) " /* FAN_??? */" }, 115d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes }; 116d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const struct strval dirfds[] = { 117d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0xfacefeed00000001ULL, "1" }, 118d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0xdec0ded0ffffffffULL, "FAN_NOFD" }, 119d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0xbadfacedffffff9cULL, "AT_FDCWD" }, 120d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0xdefaced1beeff00dULL, "-1091571699" }, 121d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes }; 122d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static const char str64[] = STR64; 123d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 124d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static char bogus_path1_addr[sizeof("0x") + sizeof(void *) * 2]; 125d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes static char bogus_path1_after_addr[sizeof("0x") + sizeof(void *) * 2]; 126d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 127d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes char *bogus_path1 = tail_memdup(str64, PATH1_SIZE); 128d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes char *bogus_path2 = tail_memdup(str64, sizeof(str64)); 129d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 130d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes struct strval paths[] = { 131d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) 0, "NULL" }, 132d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) (uintptr_t) (bogus_path1 + PATH1_SIZE), 133d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes bogus_path1_after_addr }, 134d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) (uintptr_t) bogus_path1, bogus_path1_addr }, 135d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes { (kernel_ulong_t) (uintptr_t) bogus_path2, "\"" STR64 "\"" }, 136d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes }; 137d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 138d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes unsigned int i; 139d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes unsigned int j; 140d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes unsigned int k; 141d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes unsigned int l; 142d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes unsigned int m; 143d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes int rc; 144d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 145d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 146d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes snprintf(bogus_path1_addr, sizeof(bogus_path1_addr), "%p", bogus_path1); 147d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes snprintf(bogus_path1_after_addr, sizeof(bogus_path1_after_addr), "%p", 148d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes bogus_path1 + PATH1_SIZE); 149d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 150d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = fanotify_mark(-1, FAN_MARK_ADD, FAN_MODIFY | FAN_ONDIR, 151d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes -100, "."); 152d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes printf("fanotify_mark(-1, FAN_MARK_ADD, FAN_MODIFY|FAN_ONDIR" 153d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes ", AT_FDCWD, \".\") = %s\n", sprintrc(rc)); 154d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 155d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes for (i = 0; i < ARRAY_SIZE(fds); i++) { 156d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes for (j = 0; j < ARRAY_SIZE(flags); j++) { 157d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes for (k = 0; k < ARRAY_SIZE(masks); k++) { 158d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes for (l = 0; l < ARRAY_SIZE(dirfds); l++) { 159d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes for (m = 0; m < ARRAY_SIZE(paths); m++) 160d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes do_call(fds[i], 161d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes flags[j].val, 162d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes flags[j].str, 163d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes masks[k].val, 164d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes masks[k].str, 165d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes dirfds[l].val, 166d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes dirfds[l].str, 167d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes paths[m].val, 168d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes paths[m].str); 169d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes } 170d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes } 171d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes } 172d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes } 173d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 174d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes puts("+++ exited with 0 +++"); 175d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes return 0; 176d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 177d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 178d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#else 179d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 180d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott HughesSKIP_MAIN_UNDEFINED("HAVE_SYS_FANOTIFY_H && HAVE_FANOTIFY_MARK && " 181d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes "__NR_fanotify_mark") 182d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 183d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#endif 184