--- /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 <stdio.h>
+#include "test_nlattr.h"
+#include <linux/pkt_sched.h>
+#include <linux/rtnetlink.h>
+
+#ifndef TCA_STAB
+# define TCA_STAB 8
+#endif
+#ifndef TCA_STAB_DATA
+# define TCA_STAB_DATA 2
+#endif
+
+const unsigned int hdrlen = sizeof(struct tcmsg);
+
+static void
+init_tcmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
+{
+ SET_STRUCT(struct nlmsghdr, nlh,
+ .nlmsg_len = msg_len,
+ .nlmsg_type = RTM_GETQDISC,
+ .nlmsg_flags = NLM_F_DUMP
+ );
+
+ struct tcmsg *const msg = NLMSG_DATA(nlh);
+ SET_STRUCT(struct tcmsg, msg,
+ .tcm_family = AF_UNIX,
+ .tcm_ifindex = ifindex_lo()
+ );
+
+ struct nlattr *const nla = NLMSG_ATTR(nlh, sizeof(*msg));
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = msg_len - NLMSG_SPACE(hdrlen),
+ .nla_type = TCA_STAB
+ );
+}
+
+static void
+print_tcmsg(const unsigned int msg_len)
+{
+ printf("{len=%u, type=RTM_GETQDISC, flags=NLM_F_DUMP"
+ ", seq=0, pid=0}, {tcm_family=AF_UNIX"
+ ", tcm_ifindex=" IFINDEX_LO_STR
+ ", tcm_handle=0, tcm_parent=0, tcm_info=0}"
+ ", {{nla_len=%u, nla_type=TCA_STAB}",
+ msg_len, msg_len - NLMSG_SPACE(hdrlen));
+}
+
+static void
+print_uint16(const uint16_t *p)
+{
+ printf("%u", *p);
+}
+
+int
+main(void)
+{
+ skip_if_unavailable("/proc/self/fd/");
+
+ const int fd = create_nl_socket(NETLINK_ROUTE);
+ void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+
+ static char pattern[4096];
+ fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
+
+#ifdef HAVE_STRUCT_TC_SIZESPEC
+ static const struct tc_sizespec s = {
+ .cell_log = 0xab,
+ .size_log = 0xcd,
+ .cell_align = 0xefab,
+ .overhead = 0xcdadeefa,
+ .linklayer = 0xefbaafeb,
+ .mpu = 0xfebfaefb,
+ .mtu = 0xacdbefab,
+ .tsize = 0xbdeaabed
+ };
+ TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
+ init_tcmsg, print_tcmsg,
+ TCA_STAB_BASE, pattern, s,
+ PRINT_FIELD_U("{", s, cell_log);
+ PRINT_FIELD_U(", ", s, size_log);
+ PRINT_FIELD_D(", ", s, cell_align);
+ PRINT_FIELD_D(", ", s, overhead);
+ PRINT_FIELD_U(", ", s, linklayer);
+ PRINT_FIELD_U(", ", s, mpu);
+ PRINT_FIELD_U(", ", s, mtu);
+ PRINT_FIELD_U(", ", s, tsize);
+ printf("}"));
+#endif
+
+ uint16_t data[2] = { 0xacbd, 0xefba };
+ TEST_NESTED_NLATTR_ARRAY(fd, nlh0, hdrlen,
+ init_tcmsg, print_tcmsg,
+ TCA_STAB_DATA, pattern, data, print_uint16);
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
__VA_ARGS__, \
printf("}")); \
} while (0)
+
+#define TEST_NESTED_NLATTR_ARRAY(fd_, nlh0_, hdrlen_, \
+ init_msg_, print_msg_, \
+ nla_type_, pattern_, obj_, print_elem_)\
+ do { \
+ const unsigned int plen = \
+ sizeof((obj_)[0]) - 1 > DEFAULT_STRLEN \
+ ? DEFAULT_STRLEN : (int) sizeof((obj_)[0]) - 1; \
+ /* len < sizeof((obj_)[0]) */ \
+ TEST_NLATTR_((fd_), (nlh0_) - NLA_HDRLEN, \
+ (hdrlen_) + NLA_HDRLEN, \
+ (init_msg_), (print_msg_), \
+ (nla_type_), #nla_type_, \
+ plen, (pattern_), plen, \
+ print_quoted_hex((pattern_), plen); \
+ printf("}")); \
+ /* sizeof((obj_)[0]) < len < sizeof(obj_) */ \
+ TEST_NLATTR_((fd_), (nlh0_) - NLA_HDRLEN, \
+ (hdrlen_) + NLA_HDRLEN, \
+ (init_msg_), (print_msg_), \
+ (nla_type_), #nla_type_, \
+ sizeof(obj_) - 1, \
+ &(obj_), sizeof(obj_) - 1, \
+ printf("["); \
+ size_t i; \
+ for (i = 0; i < ARRAY_SIZE(obj_) - 1; ++i) { \
+ if (i) printf(", "); \
+ (print_elem_)(&(obj_)[i]); \
+ } \
+ printf("]}")); \
+ /* short read of sizeof(obj_) */ \
+ TEST_NLATTR_((fd_), (nlh0_) - NLA_HDRLEN, \
+ (hdrlen_) + NLA_HDRLEN, \
+ (init_msg_), (print_msg_), \
+ (nla_type_), #nla_type_, \
+ sizeof(obj_), \
+ &(obj_), sizeof(obj_) - 1, \
+ printf("["); \
+ size_t i; \
+ for (i = 0; i < ARRAY_SIZE(obj_) - 1; ++i) { \
+ if (i) printf(", "); \
+ (print_elem_)(&(obj_)[i]); \
+ } \
+ printf(", %p]}", \
+ RTA_DATA(TEST_NLATTR_nla) \
+ + sizeof((obj_)[0]))); \
+ /* sizeof(obj_) */ \
+ TEST_NLATTR_((fd_), (nlh0_) - NLA_HDRLEN, \
+ (hdrlen_) + NLA_HDRLEN, \
+ (init_msg_), (print_msg_), \
+ (nla_type_), #nla_type_, \
+ sizeof(obj_), \
+ &(obj_), sizeof(obj_), \
+ printf("["); \
+ size_t i; \
+ for (i = 0; i < ARRAY_SIZE(obj_); ++i) { \
+ if (i) printf(", "); \
+ (print_elem_)(&(obj_)[i]); \
+ } \
+ printf("]}")); \
+ } while (0)
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