1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1999 Adrian Chadd 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Jan-Simon Pendry. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 /* 41 * To get resource.h to include our rlimit_ident[] array of rlimit identifiers 42 */ 43 44 #define _RLIMIT_IDENT 45 46 #include <sys/param.h> 47 #include <sys/lock.h> 48 #include <sys/mutex.h> 49 #include <sys/systm.h> 50 #include <sys/proc.h> 51 #include <sys/resourcevar.h> 52 #include <sys/resource.h> 53 #include <sys/sbuf.h> 54 #include <sys/types.h> 55 #include <sys/malloc.h> 56 57 #include <fs/pseudofs/pseudofs.h> 58 #include <fs/procfs/procfs.h> 59 60 _Static_assert(nitems(rlimit_ident) == RLIM_NLIMITS, 61 "resource.h RLIMIT_IDENT needs update"); 62 63 int 64 procfs_doprocrlimit(PFS_FILL_ARGS) 65 { 66 struct plimit *limp; 67 int i; 68 69 /* 70 * Obtain a private reference to resource limits 71 */ 72 73 PROC_LOCK(p); 74 limp = lim_hold(p->p_limit); 75 PROC_UNLOCK(p); 76 77 for (i = 0; i < RLIM_NLIMITS; i++) { 78 /* 79 * Add the rlimit ident 80 */ 81 82 sbuf_printf(sb, "%s ", rlimit_ident[i]); 83 84 /* 85 * Replace RLIM_INFINITY with -1 in the string 86 */ 87 88 /* 89 * current limit 90 */ 91 92 if (limp->pl_rlimit[i].rlim_cur == RLIM_INFINITY) { 93 sbuf_printf(sb, "-1 "); 94 } else { 95 sbuf_printf(sb, "%llu ", 96 (unsigned long long)limp->pl_rlimit[i].rlim_cur); 97 } 98 99 /* 100 * maximum limit 101 */ 102 103 if (limp->pl_rlimit[i].rlim_max == RLIM_INFINITY) { 104 sbuf_printf(sb, "-1\n"); 105 } else { 106 sbuf_printf(sb, "%llu\n", 107 (unsigned long long)limp->pl_rlimit[i].rlim_max); 108 } 109 } 110 111 lim_free(limp); 112 return (0); 113 } 114