procstat_cred.c revision 224859 
1/*-
2 * Copyright (c) 2007-2008 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_cred.c 224859 2011-08-14 00:42:09Z rwatson $
27 */
28
29#include <sys/param.h>
30#include <sys/sysctl.h>
31#include <sys/user.h>
32
33#include <err.h>
34#include <libprocstat.h>
35#include <stdlib.h>
36#include <stdio.h>
37#include <unistd.h>
38
39#include "procstat.h"
40
41void
42procstat_cred(struct kinfo_proc *kipp)
43{
44	int i;
45	int mib[4];
46	int ngroups;
47	size_t len;
48	gid_t *groups = NULL;
49
50	if (!hflag)
51		printf("%5s %-16s %5s %5s %5s %5s %5s %5s %5s %-15s\n", "PID",
52		    "COMM", "EUID", "RUID", "SVUID", "EGID", "RGID", "SVGID",
53		    "FLAGS", "GROUPS");
54
55	printf("%5d ", kipp->ki_pid);
56	printf("%-16s ", kipp->ki_comm);
57	printf("%5d ", kipp->ki_uid);
58	printf("%5d ", kipp->ki_ruid);
59	printf("%5d ", kipp->ki_svuid);
60	printf("%5d ", kipp->ki_groups[0]);
61	printf("%5d ", kipp->ki_rgid);
62	printf("%5d ", kipp->ki_svgid);
63	printf("%s", kipp->ki_cr_flags & CRED_FLAG_CAPMODE ? "C" : "-");
64	printf("     ");
65
66	/*
67	 * We may have too many groups to fit in kinfo_proc's statically
68	 * sized storage.  If that occurs, attempt to retrieve them via
69	 * sysctl.
70	 */
71	if (kipp->ki_cr_flags & KI_CRF_GRP_OVERFLOW) {
72		mib[0] = CTL_KERN;
73		mib[1] = KERN_PROC;
74		mib[2] = KERN_PROC_GROUPS;
75		mib[3] = kipp->ki_pid;
76
77		ngroups = sysconf(_SC_NGROUPS_MAX) + 1;
78		len = ngroups * sizeof(gid_t);
79		if((groups = malloc(len)) == NULL)
80			err(-1, "malloc");
81
82		if (sysctl(mib, 4, groups, &len, NULL, 0) == -1) {
83			warn("sysctl: kern.proc.groups: %d "
84			    "group list truncated", kipp->ki_pid);
85			free(groups);
86			groups = NULL;
87		}
88		ngroups = len / sizeof(gid_t);
89	}
90	if (groups == NULL) {
91		ngroups = kipp->ki_ngroups;
92		groups = kipp->ki_groups;
93	}
94	for (i = 0; i < ngroups; i++)
95		printf("%s%d", (i > 0) ? "," : "", groups[i]);
96	if (groups != kipp->ki_groups)
97		free(groups);
98
99	printf("\n");
100}
101