f280594937
directory, and jail directory within procstat. While this functionality is available already in fstat, encapsulating it in the kern.proc.filedesc sysctl makes it accessible without using kvm and thus without needing elevated permissions. The new procstat output looks like: PID COMM FD T V FLAGS REF OFFSET PRO NAME 76792 tcsh cwd v d -------- - - - /usr/src 76792 tcsh root v d -------- - - - / 76792 tcsh 15 v c rw------ 16 9130 - - 76792 tcsh 16 v c rw------ 16 9130 - - 76792 tcsh 17 v c rw------ 16 9130 - - 76792 tcsh 18 v c rw------ 16 9130 - - 76792 tcsh 19 v c rw------ 16 9130 - - I am also bumping __FreeBSD_version for this as this new feature will be used in at least one port. Reviewed by: rwatson Approved by: rwatson
334 lines
7.2 KiB
C
334 lines
7.2 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 "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 error, name[4];
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unsigned int i;
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const char *str;
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size_t len;
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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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name[0] = CTL_KERN;
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name[1] = KERN_PROC;
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name[2] = KERN_PROC_FILEDESC;
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name[3] = pid;
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error = sysctl(name, 4, NULL, &len, NULL, 0);
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if (error < 0 && errno != ESRCH && errno != EPERM) {
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warn("sysctl: kern.proc.filedesc: %d", pid);
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return;
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}
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if (error < 0)
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return;
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freep = kif = malloc(len);
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if (kif == NULL)
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err(-1, "malloc");
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if (sysctl(name, 4, kif, &len, NULL, 0) < 0) {
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warn("sysctl: kern.proc.filedesc %d", pid);
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free(freep);
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return;
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}
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for (i = 0; i < len / sizeof(*kif); i++, kif++) {
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if (kif->kf_structsize != sizeof(*kif))
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errx(-1, "kinfo_file mismatch");
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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_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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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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