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
main(int argc,char * argv[])129 int main(int argc, char *argv[])
130 {
131 int lc;
132
133 tst_parse_opts(argc, argv, NULL, NULL);
134
135 setup();
136
137 for (lc = 0; TEST_LOOPING(lc); ++lc) {
138 tst_count = 0;
139 for (testno = 0; testno < TST_TOTAL; ++testno) {
140 tdat[testno].setup();
141 TEST(recvfrom(s, tdat[testno].buf, tdat[testno].buflen,
142 tdat[testno].flags, tdat[testno].from,
143 tdat[testno].salen));
144 if (TEST_RETURN >= 0)
145 TEST_RETURN = 0; /* all nonzero equal here */
146 if (TEST_RETURN != tdat[testno].retval ||
147 (TEST_RETURN < 0 &&
148 TEST_ERRNO != tdat[testno].experrno)) {
149 tst_resm(TFAIL, "%s ; returned"
150 " %ld (expected %d), errno %d (expected"
151 " %d)", tdat[testno].desc,
152 TEST_RETURN, tdat[testno].retval,
153 TEST_ERRNO, tdat[testno].experrno);
154 } else {
155 tst_resm(TPASS, "%s successful",
156 tdat[testno].desc);
157 }
158 tdat[testno].cleanup();
159 }
160 }
161 cleanup();
162
163 tst_exit();
164 }
165
166 pid_t pid;
167
setup(void)168 void setup(void)
169 {
170 TEST_PAUSE;
171
172 pid = start_server(&sin1);
173 }
174
cleanup(void)175 void cleanup(void)
176 {
177 (void)kill(pid, SIGKILL);
178
179 }
180
setup0(void)181 void setup0(void)
182 {
183 if (tdat[testno].experrno == EBADF)
184 s = 400; /* anything not an open file */
185 else if ((s = open("/dev/null", O_WRONLY)) == -1)
186 tst_brkm(TBROK | TERRNO, cleanup, "open(/dev/null) failed");
187 fromlen = sizeof(from);
188 }
189
cleanup0(void)190 void cleanup0(void)
191 {
192 s = -1;
193 }
194
setup1(void)195 void setup1(void)
196 {
197 fd_set rdfds;
198 struct timeval timeout;
199 int n;
200
201 s = SAFE_SOCKET(cleanup, tdat[testno].domain, tdat[testno].type,
202 tdat[testno].proto);
203 if (tdat[testno].type == SOCK_STREAM &&
204 connect(s, (struct sockaddr *)&sin1, sizeof(sin1)) < 0) {
205 tst_brkm(TBROK | TERRNO, cleanup, "connect failed");
206 }
207 /* Wait for something to be readable, else we won't detect EFAULT on recv */
208 FD_ZERO(&rdfds);
209 FD_SET(s, &rdfds);
210 timeout.tv_sec = 2;
211 timeout.tv_usec = 0;
212 n = select(s + 1, &rdfds, 0, 0, &timeout);
213 if (n != 1 || !FD_ISSET(s, &rdfds))
214 tst_brkm(TBROK, cleanup,
215 "client setup1 failed - no message ready in 2 sec");
216 fromlen = sizeof(from);
217 }
218
setup2(void)219 void setup2(void)
220 {
221 setup1();
222 fromlen = -1;
223 }
224
cleanup1(void)225 void cleanup1(void)
226 {
227 (void)close(s);
228 s = -1;
229 }
230
start_server(struct sockaddr_in * sin0)231 pid_t start_server(struct sockaddr_in *sin0)
232 {
233 pid_t pid;
234 socklen_t slen = sizeof(*sin0);
235
236 sin0->sin_family = AF_INET;
237 sin0->sin_port = 0; /* pick random free port */
238 sin0->sin_addr.s_addr = INADDR_ANY;
239
240 sfd = socket(PF_INET, SOCK_STREAM, 0);
241 if (sfd < 0) {
242 tst_brkm(TBROK | TERRNO, cleanup, "server socket failed");
243 return -1;
244 }
245 if (bind(sfd, (struct sockaddr *)sin0, sizeof(*sin0)) < 0) {
246 tst_brkm(TBROK | TERRNO, cleanup, "server bind failed");
247 return -1;
248 }
249 if (listen(sfd, 10) < 0) {
250 tst_brkm(TBROK | TERRNO, cleanup, "server listen failed");
251 return -1;
252 }
253 SAFE_GETSOCKNAME(cleanup, sfd, (struct sockaddr *)sin0, &slen);
254
255 switch ((pid = tst_fork())) {
256 case 0: /* child */
257 do_child();
258 break;
259 case -1:
260 tst_brkm(TBROK | TERRNO, cleanup, "server fork failed");
261 /* fall through */
262 default: /* parent */
263 (void)close(sfd);
264 return pid;
265 }
266
267 exit(1);
268 }
269
do_child(void)270 void do_child(void)
271 {
272 struct sockaddr_in fsin;
273 fd_set afds, rfds;
274 int nfds, cc, fd;
275
276 FD_ZERO(&afds);
277 FD_SET(sfd, &afds);
278
279 nfds = sfd + 1;
280
281 /* accept connections until killed */
282 while (1) {
283 socklen_t fromlen;
284
285 memcpy(&rfds, &afds, sizeof(rfds));
286
287 if (select(nfds, &rfds, NULL, NULL,
288 NULL) < 0)
289 if (errno != EINTR)
290 exit(1);
291 if (FD_ISSET(sfd, &rfds)) {
292 int newfd;
293
294 fromlen = sizeof(fsin);
295 newfd = accept(sfd, (struct sockaddr *)&fsin, &fromlen);
296 if (newfd >= 0) {
297 FD_SET(newfd, &afds);
298 nfds = MAX(nfds, newfd + 1);
299 /* send something back */
300 (void)write(newfd, "hoser\n", 6);
301 }
302 }
303 for (fd = 0; fd < nfds; ++fd)
304 if (fd != sfd && FD_ISSET(fd, &rfds)) {
305 cc = read(fd, buf, sizeof(buf));
306 if (cc == 0 || (cc < 0 && errno != EINTR)) {
307 (void)close(fd);
308 FD_CLR(fd, &afds);
309 }
310 }
311 }
312 }
313