--- /dev/null
+/*
+ * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
+ * Copyright (c) 2017 The strace developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include "netlink.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <sys/socket.h>
+#include <netinet/tcp.h>
+#include <linux/rtnetlink.h>
+#include <linux/sock_diag.h>
+#include <linux/unix_diag.h>
+
+static void
+init_unix_diag_msg(struct nlmsghdr *nlh, unsigned int msg_len)
+{
+ struct unix_diag_msg *msg;
+
+ SET_STRUCT(struct nlmsghdr, nlh,
+ .nlmsg_len = msg_len,
+ .nlmsg_type = SOCK_DIAG_BY_FAMILY,
+ .nlmsg_flags = NLM_F_DUMP
+ );
+
+ msg = NLMSG_DATA(nlh);
+ SET_STRUCT(struct unix_diag_msg, msg,
+ .udiag_family = AF_UNIX,
+ .udiag_type = SOCK_STREAM,
+ .udiag_state = TCP_FIN_WAIT1
+ );
+}
+
+static void
+test_unix_diag_vfs(const int fd)
+{
+ const int hdrlen = sizeof(struct unix_diag_msg);
+ struct nlmsghdr *nlh;
+ struct nlattr *nla;
+ unsigned int nla_len;
+ unsigned int msg_len;
+ void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+ long rc;
+
+ /* len < sizeof(struct unix_diag_vfs) */
+ nla_len = NLA_HDRLEN + 2;
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - nla_len;
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_VFS
+ );
+ memcpy(RTA_DATA(nla), "12", 2);
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_VFS}, \"12\"}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, msg_len, sprintrc(rc));
+
+ /* short read of unix_diag_vfs */
+ nla_len = NLA_HDRLEN + sizeof(struct unix_diag_vfs);
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - (nla_len - 1);
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_VFS
+ );
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_VFS}, %p}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, RTA_DATA(nla), msg_len, sprintrc(rc));
+
+ /* unix_diag_vfs */
+ nla_len = NLA_HDRLEN + sizeof(struct unix_diag_vfs);
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - nla_len;
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_VFS
+ );
+ static const struct unix_diag_vfs uv = {
+ .udiag_vfs_dev = 0xabcddafa,
+ .udiag_vfs_ino = 0xbafabcda
+ };
+ memcpy(RTA_DATA(nla), &uv, sizeof(uv));
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_VFS}, {udiag_vfs_dev=makedev(%u, %u)"
+ ", udiag_vfs_ino=%u}}}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, major(uv.udiag_vfs_dev),
+ minor(uv.udiag_vfs_dev), uv.udiag_vfs_ino,
+ msg_len, sprintrc(rc));
+}
+
+static void
+test_unix_diag_icons(const int fd)
+{
+ const int hdrlen = sizeof(struct unix_diag_msg);
+ struct nlmsghdr *nlh;
+ struct nlattr *nla;
+ unsigned int nla_len;
+ unsigned int msg_len;
+ void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+ long rc;
+
+ /* len < sizeof(uint32_t) */
+ nla_len = NLA_HDRLEN + 2;
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - nla_len;
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_ICONS
+ );
+ memcpy(RTA_DATA(nla), "12", 2);
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_ICONS}, \"12\"}}, %u"
+ ", MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, msg_len, sprintrc(rc));
+
+ /* len == sizeof(uint32_t) * 2 - 1 */
+ nla_len = NLA_HDRLEN + sizeof(uint32_t) * 2 - 1;
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - nla_len;
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_ICONS
+ );
+ static const uint32_t inode[] = { 0xadbcadbc, 0xfabdcdac };
+ memcpy(RTA_DATA(nla), inode, sizeof(inode[0]));
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_ICONS}, [%u]}}, %u"
+ ", MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, inode[0], msg_len, sprintrc(rc));
+
+ /* len == sizeof(uint32_t) * 2 */
+ nla_len = NLA_HDRLEN + sizeof(uint32_t) * 2;
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - nla_len;
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_ICONS
+ );
+ memcpy(RTA_DATA(nla), inode, sizeof(inode));
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_ICONS}, [%u, %u]}}, %u"
+ ", MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len,
+ inode[0], inode[1], msg_len, sprintrc(rc));
+}
+
+static void
+test_unix_diag_rqlen(const int fd)
+{
+ const int hdrlen = sizeof(struct unix_diag_msg);
+ struct nlmsghdr *nlh;
+ struct nlattr *nla;
+ unsigned int nla_len;
+ unsigned int msg_len;
+ void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+ long rc;
+
+ /* len < sizeof(struct unix_diag_rqlen) */
+ nla_len = NLA_HDRLEN + 2;
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - nla_len;
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_RQLEN
+ );
+ memcpy(RTA_DATA(nla), "12", 2);
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_RQLEN}, \"12\"}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, msg_len, sprintrc(rc));
+
+ /* short read of unix_diag_rqlen */
+ nla_len = NLA_HDRLEN + sizeof(struct unix_diag_rqlen);
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - (nla_len - 1);
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_RQLEN
+ );
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_RQLEN}, %p}}"
+ ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, RTA_DATA(nla),
+ msg_len, sprintrc(rc));
+
+ /* unix_diag_rqlen */
+ nla_len = NLA_HDRLEN + sizeof(struct unix_diag_rqlen);
+ msg_len = NLMSG_SPACE(hdrlen) + nla_len;
+ nlh = nlh0 - nla_len;
+ init_unix_diag_msg(nlh, msg_len);
+
+ nla = NLMSG_ATTR(nlh, hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = nla_len,
+ .nla_type = UNIX_DIAG_RQLEN
+ );
+ static const struct unix_diag_rqlen rql = {
+ .udiag_rqueue = 0xfabdcdad,
+ .udiag_wqueue = 0xbacdadcf
+ };
+ memcpy(RTA_DATA(nla), &rql, sizeof(rql));
+
+ rc = sendto(fd, nlh, msg_len, MSG_DONTWAIT, NULL, 0);
+
+ printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+ ", flags=NLM_F_DUMP, seq=0, pid=0}, {udiag_family=AF_UNIX"
+ ", udiag_type=SOCK_STREAM, udiag_state=TCP_FIN_WAIT1"
+ ", udiag_ino=0, udiag_cookie=[0, 0]}, {{nla_len=%u"
+ ", nla_type=UNIX_DIAG_RQLEN}, {udiag_rqueue=%u"
+ ", udiag_wqueue=%u}}}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+ fd, msg_len, nla_len, rql.udiag_rqueue,
+ rql.udiag_wqueue, msg_len, sprintrc(rc));
+}
+
+int main(void)
+{
+ skip_if_unavailable("/proc/self/fd/");
+
+ int fd = create_nl_socket(NETLINK_SOCK_DIAG);
+
+ test_unix_diag_vfs(fd);
+ test_unix_diag_icons(fd);
+ test_unix_diag_rqlen(fd);
+
+ printf("+++ exited with 0 +++\n");
+
+ return 0;
+}
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