static void print_header_content(FILE *ofd, struct nlmsghdr *n) { char flags[128]; char type[32]; fprintf(ofd, "type=%s length=%u flags=<%s> sequence-nr=%u pid=%u", nl_nlmsgtype2str(n->nlmsg_type, type, sizeof(type)), n->nlmsg_len, nl_nlmsg_flags2str(n->nlmsg_flags, flags, sizeof(flags)), n->nlmsg_seq, n->nlmsg_pid); }
static void nlmsg_print(uint16_t family, struct nlmsghdr *hdr) { u16 nlmsg_flags = hdr->nlmsg_flags; char type[32]; char flags[128]; char procname[PATH_MAX]; /* Look up the process name if message is not coming from the kernel. * * Note that the port id is not necessarily equal to the PID of the * receiving process (e.g. if the application is multithreaded or using * multiple sockets). In these cases we're not able to find a matching * PID and the information will not be printed. */ if (hdr->nlmsg_pid != 0) { if (proc_get_cmdline(hdr->nlmsg_pid, procname, sizeof(procname)) < 0) snprintf(procname, sizeof(procname), "unknown process"); } else snprintf(procname, sizeof(procname), "kernel"); tprintf(" [ NLMSG "); tprintf("Family %d (%s%s%s), ", family, colorize_start(bold), nlmsg_family2str(family), colorize_end()); tprintf("Len %u, ", hdr->nlmsg_len); tprintf("Type 0x%.4x (%s%s%s), ", hdr->nlmsg_type, colorize_start(bold), nlmsg_type2str(family, hdr->nlmsg_type, type, sizeof(type)), colorize_end()); tprintf("Flags 0x%.4x (%s%s%s), ", nlmsg_flags, colorize_start(bold), nlmsg_flags ? nl_nlmsg_flags2str(nlmsg_flags, flags, sizeof(flags)) : "none", colorize_end()); tprintf("Seq-Nr %u, ", hdr->nlmsg_seq); tprintf("PID %u", hdr->nlmsg_pid); if (procname[0]) tprintf(" (%s%s%s)", colorize_start(bold), basename(procname), colorize_end()); tprintf(" ]\n"); switch (family) { case NETLINK_ROUTE: rtnl_msg_print(hdr); break; case NETLINK_GENERIC: genl_msg_print(hdr); break; default: nlmsg_print_raw(hdr); } }