1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2007-2008 Robert N. M. Watson
5 * Copyright (c) 2015 Allan Jude <allanjude@freebsd.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/usr.bin/procstat/procstat_cred.c 330449 2018-03-05 07:26:05Z eadler $
30 */
31
32#include <sys/param.h>
33#include <sys/sysctl.h>
34#include <sys/user.h>
35
36#include <err.h>
37#include <libprocstat.h>
38#include <stdlib.h>
39#include <stdio.h>
40#include <unistd.h>
41
42#include "procstat.h"
43
44static const char *get_umask(struct procstat *procstat,
45    struct kinfo_proc *kipp);
46
47void
48procstat_cred(struct procstat *procstat, struct kinfo_proc *kipp)
49{
50	unsigned int i, ngroups;
51	gid_t *groups;
52
53	if (!hflag)
54		xo_emit("{T:/%5s %-16s %5s %5s %5s %5s %5s %5s %5s %5s %-15s}\n",
55		    "PID", "COMM", "EUID", "RUID", "SVUID", "EGID", "RGID",
56		    "SVGID", "UMASK", "FLAGS", "GROUPS");
57
58	xo_emit("{k:process_id/%5d/%d} ", kipp->ki_pid);
59	xo_emit("{:command/%-16s/%s} ", kipp->ki_comm);
60	xo_emit("{:uid/%5d} ", kipp->ki_uid);
61	xo_emit("{:ruid/%5d} ", kipp->ki_ruid);
62	xo_emit("{:svuid/%5d} ", kipp->ki_svuid);
63	xo_emit("{:group/%5d} ", kipp->ki_groups[0]);
64	xo_emit("{:rgid/%5d} ", kipp->ki_rgid);
65	xo_emit("{:svgid/%5d} ", kipp->ki_svgid);
66	xo_emit("{:umask/%5s} ", get_umask(procstat, kipp));
67	xo_emit("{:cr_flags/%s}", kipp->ki_cr_flags & CRED_FLAG_CAPMODE ?
68	    "C" : "-");
69	xo_emit("{P:     }");
70
71	groups = NULL;
72	/*
73	 * We may have too many groups to fit in kinfo_proc's statically
74	 * sized storage.  If that occurs, attempt to retrieve them using
75	 * libprocstat.
76	 */
77	if (kipp->ki_cr_flags & KI_CRF_GRP_OVERFLOW)
78		groups = procstat_getgroups(procstat, kipp, &ngroups);
79	if (groups == NULL) {
80		ngroups = kipp->ki_ngroups;
81		groups = kipp->ki_groups;
82	}
83	xo_open_list("groups");
84	for (i = 0; i < ngroups; i++)
85		xo_emit("{D:/%s}{l:groups/%d}", (i > 0) ? "," : "", groups[i]);
86	if (groups != kipp->ki_groups)
87		procstat_freegroups(procstat, groups);
88
89	xo_close_list("groups");
90	xo_emit("\n");
91}
92
93static const char *
94get_umask(struct procstat *procstat, struct kinfo_proc *kipp)
95{
96	u_short fd_cmask;
97	static char umask[4];
98
99	if (procstat_getumask(procstat, kipp, &fd_cmask) == 0) {
100		snprintf(umask, 4, "%03o", fd_cmask);
101		return (umask);
102	} else {
103		return ("-");
104	}
105}
106