1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2001 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* 21 * Test Name: recvfrom01 22 * 23 * Test Description: 24 * Verify that recvfrom() returns the proper errno for various failure cases 25 * 26 * Usage: <for command-line> 27 * recvfrom01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] 28 * where, -c n : Run n copies concurrently. 29 * -e : Turn on errno logging. 30 * -i n : Execute test n times. 31 * -I x : Execute test for x seconds. 32 * -P x : Pause for x seconds between iterations. 33 * -t : Turn on syscall timing. 34 * 35 * HISTORY 36 * 07/2001 Ported by Wayne Boyer 37 * 38 * RESTRICTIONS: 39 * None. 40 * 41 */ 42 43 #include <stdio.h> 44 #include <unistd.h> 45 #include <errno.h> 46 #include <fcntl.h> 47 48 #include <sys/types.h> 49 #include <sys/socket.h> 50 #include <sys/signal.h> 51 #include <sys/un.h> 52 53 #include <netinet/in.h> 54 55 #include "test.h" 56 #include "safe_macros.h" 57 58 char *TCID = "recvfrom01"; 59 int testno; 60 61 char buf[1024]; 62 int s; /* socket descriptor */ 63 struct sockaddr_in sin1, from; 64 static int sfd; /* shared between do_child and start_server */ 65 socklen_t fromlen; 66 67 void do_child(void); 68 void setup(void); 69 void setup0(void); 70 void setup1(void); 71 void setup2(void); 72 void cleanup(void); 73 void cleanup0(void); 74 void cleanup1(void); 75 pid_t start_server(struct sockaddr_in *); 76 77 struct test_case_t { /* test case structure */ 78 int domain; /* PF_INET, PF_UNIX, ... */ 79 int type; /* SOCK_STREAM, SOCK_DGRAM ... */ 80 int proto; /* protocol number (usually 0 = default) */ 81 void *buf; /* recv data buffer */ 82 size_t buflen; /* recv's 3rd argument */ 83 unsigned flags; /* recv's 4th argument */ 84 struct sockaddr *from; /* from address */ 85 socklen_t *salen; /* from address value/result buffer length */ 86 int retval; /* syscall return value */ 87 int experrno; /* expected errno */ 88 void (*setup) (void); 89 void (*cleanup) (void); 90 char *desc; 91 } tdat[] = { 92 /* 1 */ 93 { 94 PF_INET, SOCK_STREAM, 0, buf, sizeof(buf), 0, 95 (struct sockaddr *)&from, &fromlen, 96 -1, EBADF, setup0, cleanup0, "bad file descriptor"}, 97 /* 2 */ 98 { 99 0, 0, 0, buf, sizeof(buf), 0, (struct sockaddr *)&from, 100 &fromlen, -1, ENOTSOCK, setup0, cleanup0, "invalid socket"}, 101 /* 3 */ 102 { 103 PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), 0, 104 (struct sockaddr *)-1, &fromlen, 105 0, ENOTSOCK, setup1, cleanup1, "invalid socket buffer"}, 106 /* 4 */ 107 { 108 PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), 0, 109 (struct sockaddr *)&from, &fromlen, 110 -1, EINVAL, setup2, cleanup1, "invalid socket addr length"}, 111 /* 5 */ 112 { 113 PF_INET, SOCK_STREAM, 0, (void *)-1, sizeof(buf), 0, 114 (struct sockaddr *)&from, &fromlen, 115 -1, EFAULT, setup1, cleanup1, "invalid recv buffer"}, 116 /* 6 */ 117 { 118 PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), MSG_OOB, 119 (struct sockaddr *)&from, &fromlen, 120 -1, EINVAL, setup1, cleanup1, "invalid MSG_OOB flag set"}, 121 /* 7 */ 122 { 123 PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), MSG_ERRQUEUE, 124 (struct sockaddr *)&from, &fromlen, 125 -1, EAGAIN, setup1, cleanup1, "invalid MSG_ERRQUEUE flag set"},}; 126 127 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]); 128 129 #ifdef UCLINUX 130 static char *argv0; 131 #endif 132 133 int main(int argc, char *argv[]) 134 { 135 int lc; 136 137 tst_parse_opts(argc, argv, NULL, NULL); 138 139 #ifdef UCLINUX 140 argv0 = argv[0]; 141 maybe_run_child(&do_child, "d", &sfd); 142 #endif 143 144 setup(); 145 146 for (lc = 0; TEST_LOOPING(lc); ++lc) { 147 tst_count = 0; 148 for (testno = 0; testno < TST_TOTAL; ++testno) { 149 if ((tst_kvercmp(3, 17, 0) < 0) 150 && (tdat[testno].flags & MSG_ERRQUEUE) 151 && (tdat[testno].type & SOCK_STREAM)) { 152 tst_resm(TCONF, "skip MSG_ERRQUEUE test, " 153 "it's supported from 3.17"); 154 continue; 155 } 156 157 tdat[testno].setup(); 158 TEST(recvfrom(s, tdat[testno].buf, tdat[testno].buflen, 159 tdat[testno].flags, tdat[testno].from, 160 tdat[testno].salen)); 161 if (TEST_RETURN >= 0) 162 TEST_RETURN = 0; /* all nonzero equal here */ 163 if (TEST_RETURN != tdat[testno].retval || 164 (TEST_RETURN < 0 && 165 TEST_ERRNO != tdat[testno].experrno)) { 166 tst_resm(TFAIL, "%s ; returned" 167 " %ld (expected %d), errno %d (expected" 168 " %d)", tdat[testno].desc, 169 TEST_RETURN, tdat[testno].retval, 170 TEST_ERRNO, tdat[testno].experrno); 171 } else { 172 tst_resm(TPASS, "%s successful", 173 tdat[testno].desc); 174 } 175 tdat[testno].cleanup(); 176 } 177 } 178 cleanup(); 179 180 tst_exit(); 181 } 182 183 pid_t pid; 184 185 void setup(void) 186 { 187 TEST_PAUSE; 188 189 pid = start_server(&sin1); 190 } 191 192 void cleanup(void) 193 { 194 (void)kill(pid, SIGKILL); 195 196 } 197 198 void setup0(void) 199 { 200 if (tdat[testno].experrno == EBADF) 201 s = 400; /* anything not an open file */ 202 else if ((s = open("/dev/null", O_WRONLY)) == -1) 203 tst_brkm(TBROK | TERRNO, cleanup, "open(/dev/null) failed"); 204 fromlen = sizeof(from); 205 } 206 207 void cleanup0(void) 208 { 209 s = -1; 210 } 211 212 void setup1(void) 213 { 214 fd_set rdfds; 215 struct timeval timeout; 216 int n; 217 218 s = SAFE_SOCKET(cleanup, tdat[testno].domain, tdat[testno].type, 219 tdat[testno].proto); 220 if (tdat[testno].type == SOCK_STREAM && 221 connect(s, (struct sockaddr *)&sin1, sizeof(sin1)) < 0) { 222 tst_brkm(TBROK | TERRNO, cleanup, "connect failed"); 223 } 224 /* Wait for something to be readable, else we won't detect EFAULT on recv */ 225 FD_ZERO(&rdfds); 226 FD_SET(s, &rdfds); 227 timeout.tv_sec = 2; 228 timeout.tv_usec = 0; 229 n = select(s + 1, &rdfds, 0, 0, &timeout); 230 if (n != 1 || !FD_ISSET(s, &rdfds)) 231 tst_brkm(TBROK, cleanup, 232 "client setup1 failed - no message ready in 2 sec"); 233 fromlen = sizeof(from); 234 } 235 236 void setup2(void) 237 { 238 setup1(); 239 fromlen = -1; 240 } 241 242 void cleanup1(void) 243 { 244 (void)close(s); 245 s = -1; 246 } 247 248 pid_t start_server(struct sockaddr_in *sin0) 249 { 250 pid_t pid; 251 socklen_t slen = sizeof(*sin0); 252 253 sin0->sin_family = AF_INET; 254 sin0->sin_port = 0; /* pick random free port */ 255 sin0->sin_addr.s_addr = INADDR_ANY; 256 257 sfd = socket(PF_INET, SOCK_STREAM, 0); 258 if (sfd < 0) { 259 tst_brkm(TBROK | TERRNO, cleanup, "server socket failed"); 260 return -1; 261 } 262 if (bind(sfd, (struct sockaddr *)sin0, sizeof(*sin0)) < 0) { 263 tst_brkm(TBROK | TERRNO, cleanup, "server bind failed"); 264 return -1; 265 } 266 if (listen(sfd, 10) < 0) { 267 tst_brkm(TBROK | TERRNO, cleanup, "server listen failed"); 268 return -1; 269 } 270 SAFE_GETSOCKNAME(cleanup, sfd, (struct sockaddr *)sin0, &slen); 271 272 switch ((pid = FORK_OR_VFORK())) { 273 case 0: /* child */ 274 #ifdef UCLINUX 275 if (self_exec(argv0, "d", sfd) < 0) { 276 tst_brkm(TBROK, cleanup, "server self_exec failed"); 277 } 278 #else 279 do_child(); 280 #endif 281 break; 282 case -1: 283 tst_brkm(TBROK | TERRNO, cleanup, "server fork failed"); 284 /* fall through */ 285 default: /* parent */ 286 (void)close(sfd); 287 return pid; 288 } 289 290 exit(1); 291 } 292 293 void do_child(void) 294 { 295 struct sockaddr_in fsin; 296 fd_set afds, rfds; 297 int nfds, cc, fd; 298 299 FD_ZERO(&afds); 300 FD_SET(sfd, &afds); 301 302 nfds = sfd + 1; 303 304 /* accept connections until killed */ 305 while (1) { 306 socklen_t fromlen; 307 308 memcpy(&rfds, &afds, sizeof(rfds)); 309 310 if (select(nfds, &rfds, NULL, NULL, 311 NULL) < 0) 312 if (errno != EINTR) 313 exit(1); 314 if (FD_ISSET(sfd, &rfds)) { 315 int newfd; 316 317 fromlen = sizeof(fsin); 318 newfd = accept(sfd, (struct sockaddr *)&fsin, &fromlen); 319 if (newfd >= 0) { 320 FD_SET(newfd, &afds); 321 nfds = MAX(nfds, newfd + 1); 322 /* send something back */ 323 (void)write(newfd, "hoser\n", 6); 324 } 325 } 326 for (fd = 0; fd < nfds; ++fd) 327 if (fd != sfd && FD_ISSET(fd, &rfds)) { 328 cc = read(fd, buf, sizeof(buf)); 329 if (cc == 0 || (cc < 0 && errno != EINTR)) { 330 (void)close(fd); 331 FD_CLR(fd, &afds); 332 } 333 } 334 } 335 } 336
