1 /*
2 * Copyright (c) 2018 Harsha Sharma <harshasharmaiitr@gmail.com>
3 * Copyright (c) 2018 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "defs.h"
30 #include "print_fields.h"
31 #include "netlink_kobject_uevent.h"
32
33 #include <arpa/inet.h>
34
35 void
decode_netlink_kobject_uevent(struct tcb * tcp,kernel_ulong_t addr,kernel_ulong_t len)36 decode_netlink_kobject_uevent(struct tcb *tcp, kernel_ulong_t addr,
37 kernel_ulong_t len)
38 {
39 struct udev_monitor_netlink_header uh;
40 const char *prefix = "libudev";
41 unsigned int offset = sizeof(uh);
42
43 if (!verbose(tcp) || (exiting(tcp) && syserror(tcp)) ||
44 !addr || len < offset || umove(tcp, addr, &uh) ||
45 strcmp(uh.prefix, prefix) != 0) {
46 printstrn(tcp, addr, len);
47 return;
48 }
49
50 PRINT_FIELD_CSTRING("{{", uh, prefix);
51 tprintf(", magic=htonl(%#x)", ntohl(uh.magic));
52 PRINT_FIELD_U(", ", uh, header_size);
53 PRINT_FIELD_U(", ", uh, properties_off);
54 PRINT_FIELD_U(", ", uh, properties_len);
55 tprintf(", filter_subsystem_hash=htonl(%#x)", ntohl(uh.filter_subsystem_hash));
56 tprintf(", filter_devtype_hash=htonl(%#x)", ntohl(uh.filter_devtype_hash));
57 tprintf(", filter_tag_bloom_hi=htonl(%#x)", ntohl(uh.filter_tag_bloom_hi));
58 tprintf(", filter_tag_bloom_lo=htonl(%#x)", ntohl(uh.filter_tag_bloom_lo));
59 tprints("}");
60 if (len > offset) {
61 tprints(", ");
62 printstrn(tcp, addr + offset, len - offset);
63 }
64 tprints("}");
65 }
66