procstat_cred.c revision 249671 
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 249671 2013-04-20 07:55:31Z trociny $
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
41static const char *get_umask(struct kinfo_proc *kipp);
42
43void
44procstat_cred(struct procstat *procstat, struct kinfo_proc *kipp)
45{
46	unsigned int i, ngroups;
47	gid_t *groups;
48
49	if (!hflag)
50		printf("%5s %-16s %5s %5s %5s %5s %5s %5s %5s %5s %-15s\n",
51		    "PID", "COMM", "EUID", "RUID", "SVUID", "EGID", "RGID",
52		    "SVGID", "UMASK", "FLAGS", "GROUPS");
53
54	printf("%5d ", kipp->ki_pid);
55	printf("%-16s ", kipp->ki_comm);
56	printf("%5d ", kipp->ki_uid);
57	printf("%5d ", kipp->ki_ruid);
58	printf("%5d ", kipp->ki_svuid);
59	printf("%5d ", kipp->ki_groups[0]);
60	printf("%5d ", kipp->ki_rgid);
61	printf("%5d ", kipp->ki_svgid);
62	printf("%5s ", get_umask(kipp));
63	printf("%s", kipp->ki_cr_flags & CRED_FLAG_CAPMODE ? "C" : "-");
64	printf("     ");
65
66	groups = NULL;
67	/*
68	 * We may have too many groups to fit in kinfo_proc's statically
69	 * sized storage.  If that occurs, attempt to retrieve them using
70	 * libprocstat.
71	 */
72	if (kipp->ki_cr_flags & KI_CRF_GRP_OVERFLOW)
73		groups = procstat_getgroups(procstat, kipp, &ngroups);
74	if (groups == NULL) {
75		ngroups = kipp->ki_ngroups;
76		groups = kipp->ki_groups;
77	}
78	for (i = 0; i < ngroups; i++)
79		printf("%s%d", (i > 0) ? "," : "", groups[i]);
80	if (groups != kipp->ki_groups)
81		procstat_freegroups(procstat, groups);
82
83	printf("\n");
84}
85
86static const char *
87get_umask(struct kinfo_proc *kipp)
88{
89	int error;
90	int mib[4];
91	size_t len;
92	u_short fd_cmask;
93	static char umask[4];
94
95	mib[0] = CTL_KERN;
96	mib[1] = KERN_PROC;
97	mib[2] = KERN_PROC_UMASK;
98	mib[3] = kipp->ki_pid;
99	len = sizeof(fd_cmask);
100	error = sysctl(mib, 4, &fd_cmask, &len, NULL, 0);
101	if (error == 0) {
102		snprintf(umask, 4, "%03o", fd_cmask);
103		return (umask);
104	} else {
105		return ("-");
106	}
107}
108