libnl  3.7.0
nl-list-sockets.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
4  */
5 
6 #include <netlink/cli/utils.h>
7 
8 #define PROC_NETLINK "/proc/net/netlink"
9 
10 int main(int argc, char *argv[])
11 {
12  FILE *fd;
13  char buf[2048], p[64];
14 
15  fd = fopen(PROC_NETLINK, "re");
16  if (fd == NULL) {
17  perror("fopen");
18  return -1;
19  }
20 
21  printf("Address Family PID Groups rmem "
22  "wmem CB refcnt\n");
23 
24  while (fgets(buf, sizeof(buf), fd)) {
25  unsigned long sk, cb;
26  int ret, proto, pid, rmem, wmem, refcnt;
27  unsigned int groups;
28 
29  ret = sscanf(buf, "%lx %d %d %08x %d %d %lx %d\n",
30  &sk, &proto, &pid, &groups, &rmem, &wmem,
31  &cb, &refcnt);
32  if (ret != 8)
33  continue;
34 
35  printf("0x%016lx %-16s %-6d %08x %-6d %-6d 0x%08lx %d\n",
36  sk, nl_nlfamily2str(proto, p, sizeof(p)), pid,
37  groups, rmem, wmem, cb, refcnt);
38  }
39 
40  fclose(fd);
41 
42  return 0;
43 }