1 /* 2 * Check decoding of utimensat syscall. 3 * 4 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv (at) altlinux.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "tests.h" 31 #include <fcntl.h> 32 #include <stdint.h> 33 #include <stdio.h> 34 #include <sys/stat.h> 35 #include <sys/time.h> 36 #include <unistd.h> 37 #include <asm/unistd.h> 38 39 #if defined __NR_utimensat && defined UTIME_NOW && defined UTIME_OMIT 40 41 static void 42 print_ts(const struct timespec *ts) 43 { 44 printf("{tv_sec=%lld, tv_nsec=%llu}", (long long) ts->tv_sec, 45 zero_extend_signed_to_ull(ts->tv_nsec)); 46 print_time_t_nsec(ts->tv_sec, 47 zero_extend_signed_to_ull(ts->tv_nsec), 1); 48 } 49 50 static const char *errstr; 51 52 static long 53 k_utimensat(const kernel_ulong_t dirfd, 54 const kernel_ulong_t pathname, 55 const kernel_ulong_t times, 56 const kernel_ulong_t flags) 57 { 58 long rc = syscall(__NR_utimensat, dirfd, pathname, times, flags); 59 errstr = sprintrc(rc); 60 return rc; 61 } 62 63 int 64 main(void) 65 { 66 static const kernel_ulong_t bogus_fd = 67 (kernel_ulong_t) 0xbadc0deddeadbeef; 68 static const kernel_ulong_t kfdcwd = 69 (kernel_ulong_t) 0xdefaced00000000 | -100U; 70 static const char proto_fname[] = "utimensat\nfilename"; 71 static const char qname[] = "\"utimensat\\nfilename\""; 72 73 char *const fname = tail_memdup(proto_fname, sizeof(proto_fname)); 74 const kernel_ulong_t kfname = (uintptr_t) fname; 75 struct timespec *const ts = tail_alloc(sizeof(*ts) * 2); 76 77 (void) close(0); 78 79 /* dirfd */ 80 k_utimensat(0, kfname, 0, 0); 81 printf("utimensat(0, %s, NULL, 0) = %s\n", qname, errstr); 82 83 k_utimensat(bogus_fd, kfname, 0, 0); 84 printf("utimensat(%d, %s, NULL, 0) = %s\n", 85 (int) bogus_fd, qname, errstr); 86 87 k_utimensat(-100U, kfname, 0, 0); 88 printf("utimensat(AT_FDCWD, %s, NULL, 0) = %s\n", qname, errstr); 89 90 k_utimensat(kfdcwd, kfname, 0, 0); 91 printf("utimensat(AT_FDCWD, %s, NULL, 0) = %s\n", qname, errstr); 92 93 /* pathname */ 94 k_utimensat(kfdcwd, 0, 0, 0); 95 printf("utimensat(AT_FDCWD, NULL, NULL, 0) = %s\n", errstr); 96 97 k_utimensat(kfdcwd, kfname + sizeof(proto_fname) - 1, 0, 0); 98 printf("utimensat(AT_FDCWD, \"\", NULL, 0) = %s\n", errstr); 99 100 fname[sizeof(proto_fname) - 1] = '+'; 101 k_utimensat(kfdcwd, kfname, 0, 0); 102 fname[sizeof(proto_fname) - 1] = '\0'; 103 printf("utimensat(AT_FDCWD, %p, NULL, 0) = %s\n", fname, errstr); 104 105 if (F8ILL_KULONG_SUPPORTED) { 106 k_utimensat(kfdcwd, f8ill_ptr_to_kulong(fname), 0, 0); 107 printf("utimensat(AT_FDCWD, %#jx, NULL, 0) = %s\n", 108 (uintmax_t) f8ill_ptr_to_kulong(fname), errstr); 109 } 110 111 /* times */ 112 k_utimensat(kfdcwd, kfname, (uintptr_t) (ts + 1), 0); 113 printf("utimensat(AT_FDCWD, %s, %p, 0) = %s\n", 114 qname, ts + 1, errstr); 115 116 k_utimensat(kfdcwd, kfname, (uintptr_t) (ts + 2), 0); 117 printf("utimensat(AT_FDCWD, %s, %p, 0)" 118 " = %s\n", qname, ts + 2, errstr); 119 120 ts[0].tv_sec = 1492358706; 121 ts[0].tv_nsec = 123456789; 122 ts[1].tv_sec = 1492357068; 123 ts[1].tv_nsec = 234567890; 124 125 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, 0x100); 126 printf("utimensat(AT_FDCWD, %s, [", qname); 127 print_ts(&ts[0]); 128 printf(", "); 129 print_ts(&ts[1]); 130 printf("], AT_SYMLINK_NOFOLLOW) = %s\n", errstr); 131 132 ts[0].tv_sec = -1; 133 ts[0].tv_nsec = 2000000000; 134 ts[1].tv_sec = (time_t) -0x100000001LL; 135 ts[1].tv_nsec = 2345678900U; 136 137 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, 0x100); 138 printf("utimensat(AT_FDCWD, %s, [", qname); 139 print_ts(&ts[0]); 140 printf(", "); 141 print_ts(&ts[1]); 142 printf("], AT_SYMLINK_NOFOLLOW) = %s\n", errstr); 143 144 ts[0].tv_sec = 0; 145 ts[0].tv_nsec = 0; 146 ts[1].tv_sec = (time_t) 0xcafef00ddeadbeefLL; 147 ts[1].tv_nsec = 0; 148 149 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, 0x100); 150 printf("utimensat(AT_FDCWD, %s, [", qname); 151 print_ts(&ts[0]); 152 printf(", "); 153 print_ts(&ts[1]); 154 printf("], AT_SYMLINK_NOFOLLOW) = %s\n", errstr); 155 156 ts[0].tv_sec = 0xdeadbeefU; 157 ts[0].tv_nsec = 0xfacefeedU; 158 ts[1].tv_sec = (time_t) 0xcafef00ddeadbeefLL; 159 ts[1].tv_nsec = (long) 0xbadc0dedfacefeedLL; 160 161 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, 0x100); 162 printf("utimensat(AT_FDCWD, %s, [", qname); 163 print_ts(&ts[0]); 164 printf(", "); 165 print_ts(&ts[1]); 166 printf("], AT_SYMLINK_NOFOLLOW) = %s\n", errstr); 167 168 ts[0].tv_nsec = UTIME_NOW; 169 ts[1].tv_nsec = UTIME_OMIT; 170 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, 0x100); 171 printf("utimensat(AT_FDCWD, %s, [UTIME_NOW, UTIME_OMIT]" 172 ", AT_SYMLINK_NOFOLLOW) = %s\n", qname, errstr); 173 174 if (F8ILL_KULONG_SUPPORTED) { 175 k_utimensat(kfdcwd, kfname, f8ill_ptr_to_kulong(ts), 0); 176 printf("utimensat(AT_FDCWD, %s, %#jx, 0) = %s\n", 177 qname, (uintmax_t) f8ill_ptr_to_kulong(ts), errstr); 178 } 179 180 /* flags */ 181 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, 182 (kernel_ulong_t) 0xdefaced00000200); 183 printf("utimensat(AT_FDCWD, %s, [UTIME_NOW, UTIME_OMIT]" 184 ", AT_REMOVEDIR) = %s\n", 185 qname, errstr); 186 187 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, 188 (kernel_ulong_t) 0xdefaced00000600); 189 printf("utimensat(AT_FDCWD, %s, [UTIME_NOW, UTIME_OMIT]" 190 ", AT_REMOVEDIR|AT_SYMLINK_FOLLOW) = %s\n", 191 qname, errstr); 192 193 k_utimensat(kfdcwd, kfname, (uintptr_t) ts, (kernel_ulong_t) -1ULL); 194 printf("utimensat(AT_FDCWD, %s, [UTIME_NOW, UTIME_OMIT]" 195 ", AT_SYMLINK_NOFOLLOW|AT_REMOVEDIR|AT_SYMLINK_FOLLOW" 196 "|AT_NO_AUTOMOUNT|AT_EMPTY_PATH|0xffffe0ff) = %s\n", 197 qname, errstr); 198 199 puts("+++ exited with 0 +++"); 200 return 0; 201 } 202 203 #else 204 205 SKIP_MAIN_UNDEFINED("__NR_utimensat && UTIME_NOW && UTIME_OMIT") 206 207 #endif 208
