procstat_vm.c revision 176107 
1/*-
2 * Copyright (c) 2007 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.bin/procstat/procstat_vm.c 176107 2008-02-08 11:03:05Z dwmalone $
27 */
28
29#include <sys/types.h>
30#include <sys/sysctl.h>
31#include <sys/user.h>
32
33#include <err.h>
34#include <errno.h>
35#include <stdio.h>
36#include <stdlib.h>
37
38#include "procstat.h"
39
40void
41procstat_vm(pid_t pid, struct kinfo_proc *kipp __unused)
42{
43	struct kinfo_vmentry *freep, *kve;
44	int error, name[4], ptrwidth;
45	unsigned int i;
46	const char *str;
47	size_t len;
48
49	ptrwidth = 2*sizeof(void *) + 2;
50	if (!hflag)
51		printf("%5s %*s %*s %3s %4s %4s %3s %3s %2s %-2s %-s\n",
52		    "PID", ptrwidth, "START", ptrwidth, "END", "PRT", "RES",
53		    "PRES", "REF", "SHD", "FL", "TP", "PATH");
54
55	name[0] = CTL_KERN;
56	name[1] = KERN_PROC;
57	name[2] = KERN_PROC_VMMAP;
58	name[3] = pid;
59
60	len = 0;
61	error = sysctl(name, 4, NULL, &len, NULL, 0);
62	if (error < 0 && errno != ESRCH && errno != EPERM) {
63		warn("sysctl: kern.proc.vmmap: %d", pid);
64		return;
65	}
66	if (error < 0)
67		return;
68
69	/*
70	 * Especially if running procstat -sv, we may need room for more
71	 * mappings when printing than were present when we queried, so pad
72	 * out the allocation a bit.
73	 */
74	len += sizeof(*kve) * 3;
75	freep = kve = malloc(len);
76	if (kve == NULL)
77		err(-1, "malloc");
78	if (sysctl(name, 4, kve, &len, NULL, 0) < 0) {
79		warn("sysctl: kern.proc.vmmap: %d", pid);
80		free(freep);
81		return;
82	}
83
84	for (i = 0; i < (len / sizeof(*kve)); i++, kve++) {
85		if (kve->kve_structsize != sizeof(*kve))
86			errx(-1, "kinfo_vmentry structure mismatch");
87		printf("%5d ", pid);
88		printf("%*p ", ptrwidth, kve->kve_start);
89		printf("%*p ", ptrwidth, kve->kve_end);
90		printf("%s", kve->kve_protection & KVME_PROT_READ ? "r" : "-");
91		printf("%s", kve->kve_protection & KVME_PROT_WRITE ? "w" : "-");
92		printf("%s ", kve->kve_protection & KVME_PROT_EXEC ? "x" : "-");
93		printf("%4d ", kve->kve_resident);
94		printf("%4d ", kve->kve_private_resident);
95		printf("%3d ", kve->kve_ref_count);
96		printf("%3d ", kve->kve_shadow_count);
97		printf("%-1s", kve->kve_flags & KVME_FLAG_COW ? "C" : "-");
98		printf("%-1s ", kve->kve_flags & KVME_FLAG_NEEDS_COPY ? "N" :
99		    "-");
100		switch (kve->kve_type) {
101		case KVME_TYPE_NONE:
102			str = "--";
103			break;
104		case KVME_TYPE_DEFAULT:
105			str = "df";
106			break;
107		case KVME_TYPE_VNODE:
108			str = "vn";
109			break;
110		case KVME_TYPE_SWAP:
111			str = "sw";
112			break;
113		case KVME_TYPE_DEVICE:
114			str = "dv";
115			break;
116		case KVME_TYPE_PHYS:
117			str = "ph";
118			break;
119		case KVME_TYPE_DEAD:
120			str = "dd";
121			break;
122		case KVME_TYPE_UNKNOWN:
123		default:
124			str = "??";
125			break;
126		}
127		printf("%-2s ", str);
128		printf("%-s\n", kve->kve_path);
129	}
130	free(freep);
131}
132