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master
memcheck/tests/sendmsg.c
75 строк
2 KB
Julian Seward
Bug 345248 - add support for Solaris OS in valgrind
21 июл 2015, 17:44
21 июл 2015, 17:44
ac60633
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#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <netinet/ip.h> #define PORT 12345 int main (int argc, char **argv) { int fd; struct sockaddr_in sa; struct msghdr msg; struct iovec iov[2]; fd = socket (AF_INET, SOCK_DGRAM, 0); if (fd == -1) { perror ("socket()"); exit (EXIT_FAILURE); } sa.sin_family = AF_INET; sa.sin_addr.s_addr = htonl (INADDR_LOOPBACK); sa.sin_port = htons (PORT); if (connect (fd, (struct sockaddr *) &sa, sizeof (sa)) == -1) { perror ("connect ()"); exit (EXIT_FAILURE); } // Create msg_hdr. Oops, we forget to set msg_name... msg.msg_namelen = 0; iov[0].iov_base = "one"; iov[0].iov_len = 3; iov[1].iov_base = "two"; iov[1].iov_len = 3; msg.msg_iov = &iov[0]; msg.msg_iovlen = 2; msg.msg_control = NULL; msg.msg_controllen = 0; size_t s = sendmsg (fd, &msg, 0); // Note how we now do set msg_name, but don't set msg_flags. // The msg_flags field is ignored by sendmsg. msg.msg_name = NULL; fd = socket (AF_INET, SOCK_DGRAM, 0); if (fd == -1) { perror ("socket()"); exit (EXIT_FAILURE); } if (connect (fd, (struct sockaddr *) &sa, sizeof (sa)) == -1) { perror ("connect ()"); exit (EXIT_FAILURE); } s = sendmsg (fd, &msg, 0); if (s == -1) { perror ("sendmsg ()"); exit (EXIT_FAILURE); } else fprintf (stderr, "sendmsg: %d\n", (int) s); return 0; }