plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 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 |
Wanlong Gao | 4548c6c | 2012-10-19 18:03:36 +0800 | [diff] [blame] | 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 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> |
plars | b7ba493 | 2002-05-06 21:56:16 +0000 | [diff] [blame] | 46 | #include <fcntl.h> |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 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" |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 56 | |
Cyril Hrubis | fdce7d5 | 2013-04-04 18:35:48 +0200 | [diff] [blame] | 57 | char *TCID = "recvfrom01"; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 58 | int testno; |
| 59 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 60 | char buf[1024]; |
| 61 | int s; /* socket descriptor */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 62 | struct sockaddr_in sin1, from; |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 63 | static int sfd; /* shared between do_child and start_server */ |
| 64 | socklen_t fromlen; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 65 | |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 66 | void do_child(void); |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 67 | void setup(void); |
| 68 | void setup0(void); |
| 69 | void setup1(void); |
| 70 | void setup2(void); |
| 71 | void cleanup(void); |
| 72 | void cleanup0(void); |
| 73 | void cleanup1(void); |
| 74 | pid_t start_server(struct sockaddr_in *); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 75 | |
| 76 | struct test_case_t { /* test case structure */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 77 | int domain; /* PF_INET, PF_UNIX, ... */ |
| 78 | int type; /* SOCK_STREAM, SOCK_DGRAM ... */ |
| 79 | int proto; /* protocol number (usually 0 = default) */ |
| 80 | void *buf; /* recv data buffer */ |
| 81 | size_t buflen; /* recv's 3rd argument */ |
| 82 | unsigned flags; /* recv's 4th argument */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 83 | struct sockaddr *from; /* from address */ |
robbiew | 46faba6 | 2003-04-29 14:36:25 +0000 | [diff] [blame] | 84 | socklen_t *salen; /* from address value/result buffer length */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 85 | int retval; /* syscall return value */ |
| 86 | int experrno; /* expected errno */ |
| 87 | void (*setup) (void); |
| 88 | void (*cleanup) (void); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 89 | char *desc; |
| 90 | } tdat[] = { |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 91 | /* 1 */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 92 | { |
| 93 | PF_INET, SOCK_STREAM, 0, buf, sizeof(buf), 0, |
| 94 | (struct sockaddr *)&from, &fromlen, |
| 95 | -1, EBADF, setup0, cleanup0, "bad file descriptor"}, |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 96 | /* 2 */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 97 | { |
| 98 | 0, 0, 0, buf, sizeof(buf), 0, (struct sockaddr *)&from, |
| 99 | &fromlen, -1, ENOTSOCK, setup0, cleanup0, "invalid socket"}, |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 100 | /* 3 */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 101 | { |
| 102 | PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), 0, |
| 103 | (struct sockaddr *)-1, &fromlen, |
| 104 | 0, ENOTSOCK, setup1, cleanup1, "invalid socket buffer"}, |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 105 | /* 4 */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 106 | { |
Chuck Ebbert | 20a99d7 | 2014-09-25 06:58:38 -0500 | [diff] [blame] | 107 | PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), 0, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 108 | (struct sockaddr *)&from, &fromlen, |
Chuck Ebbert | 20a99d7 | 2014-09-25 06:58:38 -0500 | [diff] [blame] | 109 | -1, EINVAL, setup2, cleanup1, "invalid socket addr length"}, |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 110 | /* 5 */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 111 | { |
| 112 | PF_INET, SOCK_STREAM, 0, (void *)-1, sizeof(buf), 0, |
| 113 | (struct sockaddr *)&from, &fromlen, |
| 114 | -1, EFAULT, setup1, cleanup1, "invalid recv buffer"}, |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 115 | /* 6 */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 116 | { |
Chuck Ebbert | 1153a84 | 2014-10-01 17:10:32 -0500 | [diff] [blame] | 117 | PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), MSG_OOB, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 118 | (struct sockaddr *)&from, &fromlen, |
Chuck Ebbert | 1153a84 | 2014-10-01 17:10:32 -0500 | [diff] [blame] | 119 | -1, EINVAL, setup1, cleanup1, "invalid MSG_OOB flag set"}, |
| 120 | /* 7 */ |
| 121 | { |
| 122 | PF_INET, SOCK_STREAM, 0, (void *)buf, sizeof(buf), MSG_ERRQUEUE, |
| 123 | (struct sockaddr *)&from, &fromlen, |
| 124 | -1, EAGAIN, setup1, cleanup1, "invalid MSG_ERRQUEUE flag set"},}; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 125 | |
Cyril Hrubis | fdce7d5 | 2013-04-04 18:35:48 +0200 | [diff] [blame] | 126 | int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 127 | |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 128 | #ifdef UCLINUX |
| 129 | static char *argv0; |
| 130 | #endif |
| 131 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 132 | int main(int argc, char *argv[]) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 133 | { |
Cyril Hrubis | 89af32a | 2012-10-24 16:39:11 +0200 | [diff] [blame] | 134 | int lc; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 135 | const char *msg; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 136 | |
Garrett Cooper | a9e49f1 | 2010-12-16 10:54:03 -0800 | [diff] [blame] | 137 | if ((msg = parse_opts(argc, argv, NULL, NULL)) != NULL) |
Garrett Cooper | 60fa801 | 2010-11-22 13:50:58 -0800 | [diff] [blame] | 138 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
Garrett Cooper | a9e49f1 | 2010-12-16 10:54:03 -0800 | [diff] [blame] | 139 | |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 140 | #ifdef UCLINUX |
| 141 | argv0 = argv[0]; |
| 142 | maybe_run_child(&do_child, "d", &sfd); |
| 143 | #endif |
| 144 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 145 | setup(); |
| 146 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 147 | for (lc = 0; TEST_LOOPING(lc); ++lc) { |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 148 | tst_count = 0; |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 149 | for (testno = 0; testno < TST_TOTAL; ++testno) { |
Jan Stancek | e5fd512 | 2015-01-10 11:08:03 +0100 | [diff] [blame] | 150 | if ((tst_kvercmp(3, 17, 0) < 0) |
| 151 | && (tdat[testno].flags & MSG_ERRQUEUE) |
| 152 | && (tdat[testno].type & SOCK_STREAM)) { |
| 153 | tst_resm(TCONF, "skip MSG_ERRQUEUE test, " |
| 154 | "it's supported from 3.17"); |
| 155 | continue; |
| 156 | } |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 157 | |
Jan Stancek | e5fd512 | 2015-01-10 11:08:03 +0100 | [diff] [blame] | 158 | tdat[testno].setup(); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 159 | TEST(recvfrom(s, tdat[testno].buf, tdat[testno].buflen, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 160 | tdat[testno].flags, tdat[testno].from, |
| 161 | tdat[testno].salen)); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 162 | if (TEST_RETURN >= 0) |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 163 | TEST_RETURN = 0; /* all nonzero equal here */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 164 | if (TEST_RETURN != tdat[testno].retval || |
| 165 | (TEST_RETURN < 0 && |
| 166 | TEST_ERRNO != tdat[testno].experrno)) { |
| 167 | tst_resm(TFAIL, "%s ; returned" |
vapier | 8447d11 | 2009-08-28 13:40:32 +0000 | [diff] [blame] | 168 | " %ld (expected %d), errno %d (expected" |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 169 | " %d)", tdat[testno].desc, |
| 170 | TEST_RETURN, tdat[testno].retval, |
| 171 | TEST_ERRNO, tdat[testno].experrno); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 172 | } else { |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 173 | tst_resm(TPASS, "%s successful", |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 174 | tdat[testno].desc); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 175 | } |
| 176 | tdat[testno].cleanup(); |
| 177 | } |
| 178 | } |
| 179 | cleanup(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 180 | |
| 181 | tst_exit(); |
| 182 | } |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 183 | |
| 184 | pid_t pid; |
| 185 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 186 | void setup(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 187 | { |
Cyril Hrubis | fdce7d5 | 2013-04-04 18:35:48 +0200 | [diff] [blame] | 188 | TEST_PAUSE; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 189 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 190 | pid = start_server(&sin1); |
| 191 | } |
| 192 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 193 | void cleanup(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 194 | { |
Cyril Hrubis | 605fa33 | 2015-02-04 13:11:20 +0100 | [diff] [blame] | 195 | (void)kill(pid, SIGKILL); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 196 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 197 | } |
| 198 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 199 | void setup0(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 200 | { |
| 201 | if (tdat[testno].experrno == EBADF) |
| 202 | s = 400; /* anything not an open file */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 203 | else if ((s = open("/dev/null", O_WRONLY)) == -1) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 204 | tst_brkm(TBROK | TERRNO, cleanup, "open(/dev/null) failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 205 | fromlen = sizeof(from); |
| 206 | } |
| 207 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 208 | void cleanup0(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 209 | { |
| 210 | s = -1; |
| 211 | } |
| 212 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 213 | void setup1(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 214 | { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 215 | fd_set rdfds; |
| 216 | struct timeval timeout; |
| 217 | int n; |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 218 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 219 | s = socket(tdat[testno].domain, tdat[testno].type, tdat[testno].proto); |
vapier | 8447d11 | 2009-08-28 13:40:32 +0000 | [diff] [blame] | 220 | if (s < 0) |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 221 | tst_brkm(TBROK | TERRNO, cleanup, "socket() failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 222 | if (tdat[testno].type == SOCK_STREAM && |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 223 | connect(s, (struct sockaddr *)&sin1, sizeof(sin1)) < 0) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 224 | tst_brkm(TBROK | TERRNO, cleanup, "connect failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 225 | } |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 226 | /* Wait for something to be readable, else we won't detect EFAULT on recv */ |
| 227 | FD_ZERO(&rdfds); |
| 228 | FD_SET(s, &rdfds); |
| 229 | timeout.tv_sec = 2; |
| 230 | timeout.tv_usec = 0; |
| 231 | n = select(s + 1, &rdfds, 0, 0, &timeout); |
| 232 | if (n != 1 || !FD_ISSET(s, &rdfds)) |
| 233 | tst_brkm(TBROK, cleanup, |
| 234 | "client setup1 failed - no message ready in 2 sec"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 235 | fromlen = sizeof(from); |
| 236 | } |
| 237 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 238 | void setup2(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 239 | { |
| 240 | setup1(); |
| 241 | fromlen = -1; |
| 242 | } |
| 243 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 244 | void cleanup1(void) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 245 | { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 246 | (void)close(s); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 247 | s = -1; |
| 248 | } |
| 249 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 250 | pid_t start_server(struct sockaddr_in *sin0) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 251 | { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 252 | pid_t pid; |
Jan Stancek | 6e4e77a | 2014-03-07 11:39:56 +0100 | [diff] [blame] | 253 | socklen_t slen = sizeof(*sin0); |
| 254 | |
| 255 | sin0->sin_family = AF_INET; |
| 256 | sin0->sin_port = 0; /* pick random free port */ |
| 257 | sin0->sin_addr.s_addr = INADDR_ANY; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 258 | |
| 259 | sfd = socket(PF_INET, SOCK_STREAM, 0); |
| 260 | if (sfd < 0) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 261 | tst_brkm(TBROK | TERRNO, cleanup, "server socket failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 262 | return -1; |
| 263 | } |
Jan Stancek | 6e4e77a | 2014-03-07 11:39:56 +0100 | [diff] [blame] | 264 | if (bind(sfd, (struct sockaddr *)sin0, sizeof(*sin0)) < 0) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 265 | tst_brkm(TBROK | TERRNO, cleanup, "server bind failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 266 | return -1; |
| 267 | } |
| 268 | if (listen(sfd, 10) < 0) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 269 | tst_brkm(TBROK | TERRNO, cleanup, "server listen failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 270 | return -1; |
| 271 | } |
Jan Stancek | 6e4e77a | 2014-03-07 11:39:56 +0100 | [diff] [blame] | 272 | if (getsockname(sfd, (struct sockaddr *)sin0, &slen) == -1) |
| 273 | tst_brkm(TBROK | TERRNO, cleanup, "getsockname failed"); |
| 274 | |
vapier | fed9da3 | 2006-02-19 09:25:08 +0000 | [diff] [blame] | 275 | switch ((pid = FORK_OR_VFORK())) { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 276 | case 0: /* child */ |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 277 | #ifdef UCLINUX |
| 278 | if (self_exec(argv0, "d", sfd) < 0) { |
| 279 | tst_brkm(TBROK, cleanup, "server self_exec failed"); |
| 280 | } |
| 281 | #else |
| 282 | do_child(); |
| 283 | #endif |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 284 | break; |
| 285 | case -1: |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 286 | tst_brkm(TBROK | TERRNO, cleanup, "server fork failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 287 | /* fall through */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 288 | default: /* parent */ |
| 289 | (void)close(sfd); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 290 | return pid; |
| 291 | } |
| 292 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 293 | exit(1); |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 294 | } |
| 295 | |
Mike Frysinger | c57fba5 | 2014-04-09 18:56:30 -0400 | [diff] [blame] | 296 | void do_child(void) |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 297 | { |
| 298 | struct sockaddr_in fsin; |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 299 | fd_set afds, rfds; |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 300 | int nfds, cc, fd; |
| 301 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 302 | FD_ZERO(&afds); |
| 303 | FD_SET(sfd, &afds); |
| 304 | |
Cyril Hrubis | 7855d09 | 2014-10-09 16:13:05 +0200 | [diff] [blame] | 305 | nfds = sfd + 1; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 306 | |
| 307 | /* accept connections until killed */ |
| 308 | while (1) { |
robbiew | 46faba6 | 2003-04-29 14:36:25 +0000 | [diff] [blame] | 309 | socklen_t fromlen; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 310 | |
| 311 | memcpy(&rfds, &afds, sizeof(rfds)); |
| 312 | |
Cyril Hrubis | 4e2bab8 | 2014-09-24 16:34:35 +0200 | [diff] [blame] | 313 | if (select(nfds, &rfds, NULL, NULL, |
| 314 | NULL) < 0) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 315 | if (errno != EINTR) |
| 316 | exit(1); |
| 317 | if (FD_ISSET(sfd, &rfds)) { |
| 318 | int newfd; |
| 319 | |
| 320 | fromlen = sizeof(fsin); |
plars | e12303f | 2003-01-28 17:20:24 +0000 | [diff] [blame] | 321 | newfd = accept(sfd, (struct sockaddr *)&fsin, &fromlen); |
Cyril Hrubis | 7855d09 | 2014-10-09 16:13:05 +0200 | [diff] [blame] | 322 | if (newfd >= 0) { |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 323 | FD_SET(newfd, &afds); |
Cyril Hrubis | 7855d09 | 2014-10-09 16:13:05 +0200 | [diff] [blame] | 324 | nfds = MAX(nfds, newfd + 1); |
| 325 | /* send something back */ |
| 326 | (void)write(newfd, "hoser\n", 6); |
| 327 | } |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 328 | } |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 329 | for (fd = 0; fd < nfds; ++fd) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 330 | if (fd != sfd && FD_ISSET(fd, &rfds)) { |
| 331 | cc = read(fd, buf, sizeof(buf)); |
| 332 | if (cc == 0 || (cc < 0 && errno != EINTR)) { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 333 | (void)close(fd); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 334 | FD_CLR(fd, &afds); |
| 335 | } |
| 336 | } |
| 337 | } |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame] | 338 | } |