2 #include <sys/socket.h>
14 #define TEST_FILENAME "/tmp/passdesc"
16 static int test_buflen;
17 static void *test_buf;
20 test_send_desc(int s, int fd)
26 uint8_t data[CMSG_SPACE(sizeof(int))];
31 iov.iov_base = test_buf;
32 iov.iov_len = test_buflen;
34 memset(&msg, 0, sizeof(msg));
37 msg.msg_control = ctrl.data;
38 msg.msg_controllen = sizeof(ctrl.data);
40 memset(&ctrl, 0, sizeof(ctrl));
41 cm = CMSG_FIRSTHDR(&msg);
42 cm->cmsg_len = CMSG_LEN(sizeof(int));
43 cm->cmsg_level = SOL_SOCKET;
44 cm->cmsg_type = SCM_RIGHTS;
45 *((int *)CMSG_DATA(cm)) = fd;
47 n = sendmsg(s, &msg, 0);
49 err(1, "sendmsg failed");
50 else if (n != test_buflen)
51 errx(1, "sendmsg sent %d", n);
62 uint8_t data[CMSG_SPACE(sizeof(int))];
68 iov.iov_base = test_buf;
69 iov.iov_len = test_buflen;
71 memset(&msg, 0, sizeof(msg));
74 msg.msg_control = ctrl.data;
75 msg.msg_controllen = sizeof(ctrl.data);
77 n = recvmsg(s, &msg, MSG_WAITALL);
79 err(1, "recvmsg failed");
80 else if (n != test_buflen)
81 errx(1, "recvmsg received %d", n);
83 cm = CMSG_FIRSTHDR(&msg);
86 if (cm->cmsg_len != CMSG_LEN(sizeof(int)))
87 errx(1, "cmsg len mismatch");
88 if (cm->cmsg_level != SOL_SOCKET)
89 errx(1, "cmsg level mismatch");
90 if (cm->cmsg_type != SCM_RIGHTS)
91 errx(1, "cmsg type mismatch");
93 fd = *((int *)CMSG_DATA(cm));
95 n = read(fd, data, sizeof(data) - 1);
97 err(1, "read failed");
100 fprintf(stderr, "fd content: %s\n", data);
104 usage(const char *cmd)
106 fprintf(stderr, "%s [-d] [-s] [-p payload_len]\n", cmd);
111 main(int argc, char *argv[])
113 int s[2], fd, status, n, discard, skipfd;
119 while ((opt = getopt(argc, argv, "dp:s")) != -1) {
126 test_buflen = strtoul(optarg, NULL, 10);
138 if (test_buflen <= 0)
139 test_buflen = sizeof(int);
140 test_buf = malloc(test_buflen);
141 if (test_buf == NULL)
142 err(1, "malloc %d failed", test_buflen);
144 if (socketpair(AF_LOCAL, SOCK_STREAM, 0, s) < 0)
145 err(1, "socketpair(LOCAL, STREAM) failed");
149 if (!discard && !skipfd) {
150 test_recv_desc(s[1]);
154 fprintf(stderr, "skipfd\n");
155 n = read(s[1], &buf, sizeof(buf));
157 err(1, "read failed");
159 fprintf(stderr, "discard msg\n");
166 fd = open(TEST_FILENAME, O_RDWR | O_TRUNC | O_CREAT,
167 S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH);
169 err(1, "open " TEST_FILENAME " failed");
171 n = write(fd, TEST_FILENAME, strlen(TEST_FILENAME));
173 err(1, "write failed");
174 else if (n != strlen(TEST_FILENAME))
175 errx(1, "write %d", n);
177 ofs = lseek(fd, 0, SEEK_SET);
179 err(1, "lseek failed");
181 errx(1, "lseek offset %jd", (intmax_t)ofs);
183 test_send_desc(s[0], fd);