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: recv01 22 * 23 * Test Description: 24 * Verify that recv() returns the proper errno for various failure cases 25 * 26 * Usage: <for command-line> 27 * recv01 [-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 = "recv01"; 59 int testno; 60 61 char buf[1024]; 62 int s; /* socket descriptor */ 63 struct sockaddr_in sin1, sin2, sin3, sin4; 64 static int sfd; /* shared between do_child and start_server */ 65 66 void do_child(void), setup(void), setup0(void), setup1(void), 67 cleanup(void), cleanup0(void), cleanup1(void); 68 pid_t start_server(struct sockaddr_in *); 69 70 struct test_case_t { /* test case structure */ 71 int domain; /* PF_INET, PF_UNIX, ... */ 72 int type; /* SOCK_STREAM, SOCK_DGRAM ... */ 73 int proto; /* protocol number (usually 0 = default) */ 74 void *buf; /* recv data buffer */ 75 int buflen; /* recv's 3rd argument */ 76 unsigned flags; /* recv's 4th argument */ 77 int retval; /* syscall return value */ 78 int experrno; /* expected errno */ 79 void (*setup) (void); 80 void (*cleanup) (void); 81 char *desc; 82 } tdat[] = { 83 { 84 PF_INET, SOCK_STREAM, 0, buf, sizeof(buf), 0, 85 -1, EBADF, setup0, cleanup0, "bad file descriptor"} 86 , { 87 0, 0, 0, buf, sizeof(buf), 0, 88 -1, ENOTSOCK, setup0, cleanup0, "invalid socket"} 89 , 90 #ifndef UCLINUX 91 /* Skip since uClinux does not implement memory protection */ 92 { 93 PF_INET, SOCK_STREAM, 0, (void *)-1, sizeof(buf), 0, 94 -1, EFAULT, setup1, cleanup1, "invalid recv buffer"} 95 , 96 #endif 97 { 98 PF_INET, SOCK_STREAM, 0, buf, sizeof(buf), MSG_OOB, 99 -1, EINVAL, setup1, cleanup1, "invalid MSG_OOB flag set"} 100 , 101 { 102 PF_INET, SOCK_STREAM, 0, buf, sizeof(buf), MSG_ERRQUEUE, 103 -1, EAGAIN, setup1, cleanup1, "invalid MSG_ERRQUEUE flag set"} 104 ,}; 105 106 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]); 107 108 #ifdef UCLINUX 109 static char *argv0; 110 #endif 111 112 int main(int argc, char *argv[]) 113 { 114 int lc; 115 116 tst_parse_opts(argc, argv, NULL, NULL); 117 #ifdef UCLINUX 118 argv0 = argv[0]; 119 maybe_run_child(&do_child, "d", &sfd); 120 #endif 121 122 setup(); 123 124 for (lc = 0; TEST_LOOPING(lc); ++lc) { 125 tst_count = 0; 126 for (testno = 0; testno < TST_TOTAL; ++testno) { 127 if ((tst_kvercmp(3, 17, 0) < 0) 128 && (tdat[testno].flags & MSG_ERRQUEUE) 129 && (tdat[testno].type & SOCK_STREAM)) { 130 tst_resm(TCONF, "skip MSG_ERRQUEUE test, " 131 "it's supported from 3.17"); 132 continue; 133 } 134 135 tdat[testno].setup(); 136 TEST(recv(s, tdat[testno].buf, tdat[testno].buflen, 137 tdat[testno].flags)); 138 if (TEST_RETURN > 0) 139 TEST_RETURN = 0; /* all nonzero equal here */ 140 if (TEST_RETURN != tdat[testno].retval || 141 (TEST_RETURN < 0 && 142 TEST_ERRNO != tdat[testno].experrno)) { 143 tst_resm(TFAIL, "%s ; returned" 144 " %ld (expected %d), errno %d (expected" 145 " %d)", tdat[testno].desc, 146 TEST_RETURN, tdat[testno].retval, 147 TEST_ERRNO, tdat[testno].experrno); 148 } else { 149 tst_resm(TPASS, "%s successful", 150 tdat[testno].desc); 151 } 152 tdat[testno].cleanup(); 153 } 154 } 155 cleanup(); 156 157 tst_exit(); 158 } 159 160 pid_t pid; 161 162 void setup(void) 163 { 164 TEST_PAUSE; 165 166 pid = start_server(&sin1); 167 168 (void)signal(SIGPIPE, SIG_IGN); 169 } 170 171 void cleanup(void) 172 { 173 (void)kill(pid, SIGKILL); 174 175 } 176 177 void setup0(void) 178 { 179 if (tdat[testno].experrno == EBADF) 180 s = 400; /* anything not an open file */ 181 else if ((s = open("/dev/null", O_WRONLY)) == -1) 182 tst_brkm(TBROK | TERRNO, cleanup, "open(/dev/null)"); 183 } 184 185 void cleanup0(void) 186 { 187 s = -1; 188 } 189 190 void setup1(void) 191 { 192 fd_set rdfds; 193 struct timeval timeout; 194 int n; 195 196 s = SAFE_SOCKET(cleanup, tdat[testno].domain, tdat[testno].type, 197 tdat[testno].proto); 198 if (tdat[testno].type == SOCK_STREAM && 199 connect(s, (struct sockaddr *)&sin1, sizeof(sin1)) < 0) { 200 tst_brkm(TBROK | TERRNO, cleanup, "connect failed"); 201 } 202 /* Wait for something to be readable, else we won't detect EFAULT on recv */ 203 FD_ZERO(&rdfds); 204 FD_SET(s, &rdfds); 205 timeout.tv_sec = 2; 206 timeout.tv_usec = 0; 207 n = select(s + 1, &rdfds, 0, 0, &timeout); 208 if (n != 1 || !FD_ISSET(s, &rdfds)) 209 tst_brkm(TBROK, cleanup, 210 "client setup1 failed - no message ready in 2 sec"); 211 } 212 213 void cleanup1(void) 214 { 215 (void)close(s); 216 s = -1; 217 } 218 219 pid_t start_server(struct sockaddr_in *sin0) 220 { 221 pid_t pid; 222 socklen_t slen = sizeof(*sin0); 223 224 sin0->sin_family = AF_INET; 225 sin0->sin_port = 0; /* pick random free port */ 226 sin0->sin_addr.s_addr = INADDR_ANY; 227 228 sfd = socket(PF_INET, SOCK_STREAM, 0); 229 if (sfd < 0) { 230 tst_brkm(TBROK | TERRNO, cleanup, "server socket failed"); 231 return -1; 232 } 233 if (bind(sfd, (struct sockaddr *)sin0, sizeof(*sin0)) < 0) { 234 tst_brkm(TBROK | TERRNO, cleanup, "server bind failed"); 235 return -1; 236 } 237 if (listen(sfd, 10) < 0) { 238 tst_brkm(TBROK | TERRNO, cleanup, "server listen failed"); 239 return -1; 240 } 241 SAFE_GETSOCKNAME(cleanup, sfd, (struct sockaddr *)sin0, &slen); 242 243 switch ((pid = FORK_OR_VFORK())) { 244 case 0: /* child */ 245 #ifdef UCLINUX 246 if (self_exec(argv0, "d", sfd) < 0) 247 tst_brkm(TBROK | TERRNO, cleanup, 248 "server self_exec failed"); 249 #else 250 do_child(); 251 #endif 252 break; 253 case -1: 254 tst_brkm(TBROK | TERRNO, cleanup, "server fork failed"); 255 /* fall through */ 256 default: /* parent */ 257 (void)close(sfd); 258 return pid; 259 } 260 261 exit(1); 262 } 263 264 void do_child(void) 265 { 266 struct sockaddr_in fsin; 267 fd_set afds, rfds; 268 int nfds, cc, fd; 269 270 FD_ZERO(&afds); 271 FD_SET(sfd, &afds); 272 273 nfds = sfd + 1; 274 275 /* accept connections until killed */ 276 while (1) { 277 socklen_t fromlen; 278 279 memcpy(&rfds, &afds, sizeof(rfds)); 280 281 if (select(nfds, &rfds, NULL, NULL, 282 NULL) < 0) 283 if (errno != EINTR) 284 exit(1); 285 if (FD_ISSET(sfd, &rfds)) { 286 int newfd; 287 288 fromlen = sizeof(fsin); 289 newfd = accept(sfd, (struct sockaddr *)&fsin, &fromlen); 290 if (newfd >= 0) { 291 FD_SET(newfd, &afds); 292 nfds = MAX(nfds, newfd + 1); 293 /* send something back */ 294 (void)write(newfd, "hoser\n", 6); 295 } 296 } 297 for (fd = 0; fd < nfds; ++fd) 298 if (fd != sfd && FD_ISSET(fd, &rfds)) { 299 cc = read(fd, buf, sizeof(buf)); 300 if (cc == 0 || (cc < 0 && errno != EINTR)) { 301 (void)close(fd); 302 FD_CLR(fd, &afds); 303 } 304 } 305 } 306 } 307
