43151ee6cf
This changes struct kinfo_filedesc and kinfo_vmentry such that they are same on both 32 and 64 bit platforms like i386/amd64 and won't require sysctl wrapping. Two new OIDs are assigned. The old ones are available under COMPAT_FREEBSD7 - but it isn't that simple. The superceded interface was never actually released on 7.x. The other main change is to pack the data passed to userland via the sysctl. kf_structsize and kve_structsize are reduced for the copyout. If you have a process with 100,000+ sockets open, the unpacked records require a 132MB+ copyout. With packing, it is "only" ~35MB. (Still seriously unpleasant, but not quite as devastating). A similar problem exists for the vmentry structure - have lots and lots of shared libraries and small mmaps and its copyout gets expensive too. My immediate problem is valgrind. It traditionally achieves this functionality by parsing procfs output, in a packed format. Secondly, when tracing 32 bit binaries on amd64 under valgrind, it uses a cross compiled 32 bit binary which ran directly into the differing data structures in 32 vs 64 bit mode. (valgrind uses this to track file descriptor operations and this therefore affected every single 32 bit binary) I've added two utility functions to libutil to unpack the structures into a fixed record length and to make it a little more convenient to use.
320 lines
6.8 KiB
C
320 lines
6.8 KiB
C
/*-
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* Copyright (c) 2007 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/un.h>
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#include <sys/user.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libutil.h>
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#include "procstat.h"
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static const char *
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protocol_to_string(int domain, int type, int protocol)
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{
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switch (domain) {
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case AF_INET:
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case AF_INET6:
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switch (protocol) {
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case IPPROTO_TCP:
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return ("TCP");
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case IPPROTO_UDP:
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return ("UDP");
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case IPPROTO_ICMP:
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return ("ICM");
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case IPPROTO_RAW:
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return ("RAW");
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case IPPROTO_SCTP:
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return ("SCT");
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case IPPROTO_DIVERT:
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return ("IPD");
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default:
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return ("IP?");
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}
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case AF_LOCAL:
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switch (type) {
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case SOCK_STREAM:
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return ("UDS");
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case SOCK_DGRAM:
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return ("UDD");
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default:
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return ("UD?");
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}
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default:
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return ("?");
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}
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}
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static void
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addr_to_string(struct sockaddr_storage *ss, char *buffer, int buflen)
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{
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char buffer2[INET6_ADDRSTRLEN];
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struct sockaddr_in6 *sin6;
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struct sockaddr_in *sin;
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struct sockaddr_un *sun;
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switch (ss->ss_family) {
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case AF_LOCAL:
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sun = (struct sockaddr_un *)ss;
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if (strlen(sun->sun_path) == 0)
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strlcpy(buffer, "-", buflen);
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else
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strlcpy(buffer, sun->sun_path, buflen);
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break;
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case AF_INET:
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sin = (struct sockaddr_in *)ss;
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snprintf(buffer, buflen, "%s:%d", inet_ntoa(sin->sin_addr),
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ntohs(sin->sin_port));
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break;
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case AF_INET6:
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sin6 = (struct sockaddr_in6 *)ss;
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if (inet_ntop(AF_INET6, &sin6->sin6_addr, buffer2,
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sizeof(buffer2)) != NULL)
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snprintf(buffer, buflen, "%s.%d", buffer2,
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ntohs(sin6->sin6_port));
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else
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strlcpy(buffer, "-", sizeof(buffer));
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break;
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default:
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strlcpy(buffer, "", buflen);
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break;
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}
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}
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static void
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print_address(struct sockaddr_storage *ss)
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{
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char addr[PATH_MAX];
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addr_to_string(ss, addr, sizeof(addr));
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printf("%s", addr);
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}
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void
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procstat_files(pid_t pid, struct kinfo_proc *kipp)
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{
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struct kinfo_file *freep, *kif;
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int i, cnt;
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const char *str;
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if (!hflag)
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printf("%5s %-16s %4s %1s %1s %-8s %3s %7s %-3s %-12s\n",
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"PID", "COMM", "FD", "T", "V", "FLAGS", "REF", "OFFSET",
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"PRO", "NAME");
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freep = kinfo_getfile(pid, &cnt);
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for (i = 0; i < cnt; i++) {
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kif = &freep[i];
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printf("%5d ", pid);
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printf("%-16s ", kipp->ki_comm);
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switch (kif->kf_fd) {
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case KF_FD_TYPE_CWD:
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printf(" cwd ");
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break;
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case KF_FD_TYPE_ROOT:
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printf("root ");
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break;
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case KF_FD_TYPE_JAIL:
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printf("jail ");
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break;
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default:
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printf("%4d ", kif->kf_fd);
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break;
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}
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switch (kif->kf_type) {
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case KF_TYPE_VNODE:
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str = "v";
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break;
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case KF_TYPE_SOCKET:
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str = "s";
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break;
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case KF_TYPE_PIPE:
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str = "p";
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break;
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case KF_TYPE_FIFO:
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str = "f";
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break;
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case KF_TYPE_KQUEUE:
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str = "k";
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break;
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case KF_TYPE_CRYPTO:
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str = "c";
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break;
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case KF_TYPE_MQUEUE:
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str = "m";
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break;
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case KF_TYPE_SHM:
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str = "h";
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break;
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case KF_TYPE_PTS:
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str = "t";
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break;
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case KF_TYPE_SEM:
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str = "e";
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break;
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case KF_TYPE_NONE:
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case KF_TYPE_UNKNOWN:
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default:
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str = "?";
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break;
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}
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printf("%1s ", str);
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str = "-";
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if (kif->kf_type == KF_TYPE_VNODE) {
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switch (kif->kf_vnode_type) {
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case KF_VTYPE_VREG:
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str = "r";
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break;
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case KF_VTYPE_VDIR:
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str = "d";
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break;
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case KF_VTYPE_VBLK:
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str = "b";
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break;
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case KF_VTYPE_VCHR:
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str = "c";
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break;
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case KF_VTYPE_VLNK:
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str = "l";
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break;
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case KF_VTYPE_VSOCK:
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str = "s";
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break;
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case KF_VTYPE_VFIFO:
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str = "f";
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break;
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case KF_VTYPE_VBAD:
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str = "x";
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break;
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case KF_VTYPE_VNON:
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case KF_VTYPE_UNKNOWN:
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default:
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str = "?";
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break;
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}
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}
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printf("%1s ", str);
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printf("%s", kif->kf_flags & KF_FLAG_READ ? "r" : "-");
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printf("%s", kif->kf_flags & KF_FLAG_WRITE ? "w" : "-");
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printf("%s", kif->kf_flags & KF_FLAG_APPEND ? "a" : "-");
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printf("%s", kif->kf_flags & KF_FLAG_ASYNC ? "s" : "-");
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printf("%s", kif->kf_flags & KF_FLAG_FSYNC ? "f" : "-");
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printf("%s", kif->kf_flags & KF_FLAG_NONBLOCK ? "n" : "-");
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printf("%s", kif->kf_flags & KF_FLAG_DIRECT ? "d" : "-");
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printf("%s ", kif->kf_flags & KF_FLAG_HASLOCK ? "l" : "-");
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if (kif->kf_ref_count > -1)
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printf("%3d ", kif->kf_ref_count);
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else
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printf("%3c ", '-');
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if (kif->kf_offset > -1)
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printf("%7jd ", (intmax_t)kif->kf_offset);
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else
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printf("%7c ", '-');
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switch (kif->kf_type) {
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case KF_TYPE_VNODE:
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case KF_TYPE_FIFO:
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case KF_TYPE_PTS:
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printf("%-3s ", "-");
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printf("%-18s", kif->kf_path);
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break;
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case KF_TYPE_SOCKET:
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printf("%-3s ",
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protocol_to_string(kif->kf_sock_domain,
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kif->kf_sock_type, kif->kf_sock_protocol));
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/*
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* While generally we like to print two addresses,
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* local and peer, for sockets, it turns out to be
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* more useful to print the first non-nul address for
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* local sockets, as typically they aren't bound and
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* connected, and the path strings can get long.
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*/
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if (kif->kf_sock_domain == AF_LOCAL) {
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struct sockaddr_un *sun =
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(struct sockaddr_un *)&kif->kf_sa_local;
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if (sun->sun_path[0] != 0)
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print_address(&kif->kf_sa_local);
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else
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print_address(&kif->kf_sa_peer);
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} else {
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print_address(&kif->kf_sa_local);
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printf(" ");
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print_address(&kif->kf_sa_peer);
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}
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break;
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default:
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printf("%-3s ", "-");
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printf("%-18s", "-");
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}
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printf("\n");
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}
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free(freep);
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}
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