1 /*
2 * Copyright (c) 1999 Adrian Chadd
3 * Copyright (c) 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Jan-Simon Pendry.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94
34 *
35 * $FreeBSD: src/sys/miscfs/procfs/procfs_rlimit.c,v 1.5 1999/12/08 08:59:37 phk Exp $
36 */
37
38 /*
39 * To get resource.h to include our rlimit_ident[] array of rlimit identifiers
40 */
41
42 #define _RLIMIT_IDENT
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/uio.h>
47 #include <sys/proc.h>
48 #include <sys/vnode.h>
49 #include <sys/resourcevar.h>
50 #include <sys/resource.h>
51 #include <sys/types.h>
52 #include <vfs/procfs/procfs.h>
53
54
55 int
procfs_dorlimit(struct proc * curp,struct lwp * lp,struct pfsnode * pfs,struct uio * uio)56 procfs_dorlimit(struct proc *curp, struct lwp *lp, struct pfsnode *pfs,
57 struct uio *uio)
58 {
59 struct proc *p = lp->lwp_proc;
60 size_t xlen;
61 char *ps;
62 int error;
63 int i;
64 char psbuf[512]; /* XXX - conservative */
65
66 if (uio->uio_rw != UIO_READ)
67 return (EOPNOTSUPP);
68
69 ps = psbuf;
70
71 for (i = 0; i < RLIM_NLIMITS; i++) {
72
73 /*
74 * Add the rlimit ident
75 */
76
77 ps += ksprintf(ps, "%s ", rlimit_ident[i]);
78
79 /*
80 * Replace RLIM_INFINITY with -1 in the string
81 */
82
83 /*
84 * current limit
85 */
86
87 if (p->p_rlimit[i].rlim_cur == RLIM_INFINITY) {
88 ps += ksprintf(ps, "-1 ");
89 } else {
90 ps += ksprintf(ps, "%llu ",
91 (unsigned long long)p->p_rlimit[i].rlim_cur);
92 }
93
94 /*
95 * maximum limit
96 */
97
98 if (p->p_rlimit[i].rlim_max == RLIM_INFINITY) {
99 ps += ksprintf(ps, "-1\n");
100 } else {
101 ps += ksprintf(ps, "%llu\n",
102 (unsigned long long)p->p_rlimit[i].rlim_max);
103 }
104 }
105
106 xlen = ps - psbuf;
107 error = uiomove_frombuf(psbuf, xlen, uio);
108
109 return (error);
110 }
111
112