forked from Minki/linux
422d8dc6fd
This is to test for a regression introduced by
b9470c2760 ("inet: kill smallest_size and smallest_port")
which introduced a problem with reuseaddr and bind conflicts.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
/*
|
|
* Test for the regression introduced by
|
|
*
|
|
* b9470c27607b ("inet: kill smallest_size and smallest_port")
|
|
*
|
|
* If we open an ipv4 socket on a port with reuseaddr we shouldn't reset the tb
|
|
* when we open the ipv6 conterpart, which is what was happening previously.
|
|
*/
|
|
#include <errno.h>
|
|
#include <error.h>
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
#define PORT 9999
|
|
|
|
int open_port(int ipv6, int any)
|
|
{
|
|
int fd = -1;
|
|
int reuseaddr = 1;
|
|
int v6only = 1;
|
|
int addrlen;
|
|
int ret = -1;
|
|
struct sockaddr *addr;
|
|
int family = ipv6 ? AF_INET6 : AF_INET;
|
|
|
|
struct sockaddr_in6 addr6 = {
|
|
.sin6_family = AF_INET6,
|
|
.sin6_port = htons(PORT),
|
|
.sin6_addr = in6addr_any
|
|
};
|
|
struct sockaddr_in addr4 = {
|
|
.sin_family = AF_INET,
|
|
.sin_port = htons(PORT),
|
|
.sin_addr.s_addr = any ? htonl(INADDR_ANY) : inet_addr("127.0.0.1"),
|
|
};
|
|
|
|
|
|
if (ipv6) {
|
|
addr = (struct sockaddr*)&addr6;
|
|
addrlen = sizeof(addr6);
|
|
} else {
|
|
addr = (struct sockaddr*)&addr4;
|
|
addrlen = sizeof(addr4);
|
|
}
|
|
|
|
if ((fd = socket(family, SOCK_STREAM, IPPROTO_TCP)) < 0) {
|
|
perror("socket");
|
|
goto out;
|
|
}
|
|
|
|
if (ipv6 && setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&v6only,
|
|
sizeof(v6only)) < 0) {
|
|
perror("setsockopt IPV6_V6ONLY");
|
|
goto out;
|
|
}
|
|
|
|
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
|
|
sizeof(reuseaddr)) < 0) {
|
|
perror("setsockopt SO_REUSEADDR");
|
|
goto out;
|
|
}
|
|
|
|
if (bind(fd, addr, addrlen) < 0) {
|
|
perror("bind");
|
|
goto out;
|
|
}
|
|
|
|
if (any)
|
|
return fd;
|
|
|
|
if (listen(fd, 1) < 0) {
|
|
perror("listen");
|
|
goto out;
|
|
}
|
|
return fd;
|
|
out:
|
|
close(fd);
|
|
return ret;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
int listenfd;
|
|
int fd1, fd2;
|
|
|
|
fprintf(stderr, "Opening 127.0.0.1:%d\n", PORT);
|
|
listenfd = open_port(0, 0);
|
|
if (listenfd < 0)
|
|
error(1, errno, "Couldn't open listen socket");
|
|
fprintf(stderr, "Opening INADDR_ANY:%d\n", PORT);
|
|
fd1 = open_port(0, 1);
|
|
if (fd1 >= 0)
|
|
error(1, 0, "Was allowed to create an ipv4 reuseport on a already bound non-reuseport socket");
|
|
fprintf(stderr, "Opening in6addr_any:%d\n", PORT);
|
|
fd1 = open_port(1, 1);
|
|
if (fd1 < 0)
|
|
error(1, errno, "Couldn't open ipv6 reuseport");
|
|
fprintf(stderr, "Opening INADDR_ANY:%d\n", PORT);
|
|
fd2 = open_port(0, 1);
|
|
if (fd2 >= 0)
|
|
error(1, 0, "Was allowed to create an ipv4 reuseport on a already bound non-reuseport socket");
|
|
close(fd1);
|
|
fprintf(stderr, "Opening INADDR_ANY:%d after closing ipv6 socket\n", PORT);
|
|
fd1 = open_port(0, 1);
|
|
if (fd1 >= 0)
|
|
error(1, 0, "Was allowed to create an ipv4 reuseport on an already bound non-reuseport socket with no ipv6");
|
|
fprintf(stderr, "Success");
|
|
return 0;
|
|
}
|