1 | /* $NetBSD: procfs_status.c,v 1.37 2016/11/14 08:55:51 kre Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to Berkeley by |
8 | * Jan-Simon Pendry. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. Neither the name of the University nor the names of its contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 |
35 | */ |
36 | |
37 | /* |
38 | * Copyright (c) 1993 Jan-Simon Pendry |
39 | * |
40 | * This code is derived from software contributed to Berkeley by |
41 | * Jan-Simon Pendry. |
42 | * |
43 | * Redistribution and use in source and binary forms, with or without |
44 | * modification, are permitted provided that the following conditions |
45 | * are met: |
46 | * 1. Redistributions of source code must retain the above copyright |
47 | * notice, this list of conditions and the following disclaimer. |
48 | * 2. Redistributions in binary form must reproduce the above copyright |
49 | * notice, this list of conditions and the following disclaimer in the |
50 | * documentation and/or other materials provided with the distribution. |
51 | * 3. All advertising materials mentioning features or use of this software |
52 | * must display the following acknowledgement: |
53 | * This product includes software developed by the University of |
54 | * California, Berkeley and its contributors. |
55 | * 4. Neither the name of the University nor the names of its contributors |
56 | * may be used to endorse or promote products derived from this software |
57 | * without specific prior written permission. |
58 | * |
59 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
60 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
61 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
62 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
63 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
64 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
65 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
66 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
67 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
68 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
69 | * SUCH DAMAGE. |
70 | * |
71 | * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 |
72 | */ |
73 | |
74 | #include <sys/cdefs.h> |
75 | __KERNEL_RCSID(0, "$NetBSD: procfs_status.c,v 1.37 2016/11/14 08:55:51 kre Exp $" ); |
76 | |
77 | #include <sys/param.h> |
78 | #include <sys/systm.h> |
79 | #include <sys/time.h> |
80 | #include <sys/kernel.h> |
81 | #include <sys/proc.h> |
82 | #include <sys/vnode.h> |
83 | #include <sys/ioctl.h> |
84 | #include <sys/tty.h> |
85 | #include <sys/resource.h> |
86 | #include <sys/resourcevar.h> |
87 | #include <sys/kauth.h> |
88 | |
89 | #include <miscfs/procfs/procfs.h> |
90 | |
91 | int |
92 | procfs_dostatus( |
93 | struct lwp *curl, |
94 | struct lwp *l, |
95 | struct pfsnode *pfs, |
96 | struct uio *uio |
97 | ) |
98 | { |
99 | struct session *sess; |
100 | struct tty *tp; |
101 | kauth_cred_t cr; |
102 | struct proc *p = l->l_proc; |
103 | char *ps; |
104 | const char *sep; |
105 | int pid, ppid, pgid, sid; |
106 | u_int i; |
107 | char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */ |
108 | uint16_t ngroups; |
109 | |
110 | if (uio->uio_rw != UIO_READ) |
111 | return (EOPNOTSUPP); |
112 | |
113 | mutex_enter(proc_lock); |
114 | mutex_enter(p->p_lock); |
115 | |
116 | pid = p->p_pid; |
117 | ppid = p->p_ppid; |
118 | pgid = p->p_pgrp->pg_id; |
119 | sess = p->p_pgrp->pg_session; |
120 | sid = sess->s_sid; |
121 | |
122 | /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups ... */ |
123 | |
124 | ps = psbuf; |
125 | memcpy(ps, p->p_comm, MAXCOMLEN); |
126 | ps[MAXCOMLEN] = '\0'; |
127 | ps += strlen(ps); |
128 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d %d %d %d " , |
129 | pid, ppid, pgid, sid); |
130 | |
131 | if ((p->p_lflag & PL_CONTROLT) && (tp = sess->s_ttyp)) |
132 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%llu,%llu " , |
133 | (unsigned long long)major(tp->t_dev), |
134 | (unsigned long long)minor(tp->t_dev)); |
135 | else |
136 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d " , |
137 | -1, -1); |
138 | |
139 | sep = "" ; |
140 | if (sess->s_ttyvp) { |
141 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%sctty" , sep); |
142 | sep = "," ; |
143 | } |
144 | if (SESS_LEADER(p)) { |
145 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%ssldr" , sep); |
146 | sep = "," ; |
147 | } |
148 | if (*sep != ',') |
149 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "noflags" ); |
150 | |
151 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %lld,%ld" , |
152 | (long long)p->p_stats->p_start.tv_sec, |
153 | (long)p->p_stats->p_start.tv_usec); |
154 | |
155 | { |
156 | struct timeval ut, st; |
157 | |
158 | calcru(p, &ut, &st, (void *) 0, NULL); |
159 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), |
160 | " %lld,%ld %lld,%ld" , (long long)ut.tv_sec, |
161 | (long)ut.tv_usec, (long long)st.tv_sec, (long)st.tv_usec); |
162 | } |
163 | |
164 | lwp_lock(l); |
165 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %s" , |
166 | (l->l_wchan && l->l_wmesg) ? l->l_wmesg : "nochan" ); |
167 | lwp_unlock(l); |
168 | |
169 | cr = p->p_cred; |
170 | |
171 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d" , |
172 | kauth_cred_geteuid(cr)); |
173 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d" , |
174 | kauth_cred_getegid(cr)); |
175 | ngroups = kauth_cred_ngroups(cr); |
176 | for (i = 0; i < ngroups; i++) |
177 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), ",%d" , |
178 | kauth_cred_group(cr, i)); |
179 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n" ); |
180 | |
181 | mutex_exit(p->p_lock); |
182 | mutex_exit(proc_lock); |
183 | |
184 | return (uiomove_frombuf(psbuf, ps - psbuf, uio)); |
185 | } |
186 | |