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. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 38 * 39 * $FreeBSD: src/sys/miscfs/procfs/procfs_rlimit.c,v 1.5 1999/12/08 08:59:37 phk Exp $ 40 * $DragonFly: src/sys/vfs/procfs/procfs_rlimit.c,v 1.7 2007/02/19 01:14:24 corecode Exp $ 41 */ 42 43 /* 44 * To get resource.h to include our rlimit_ident[] array of rlimit identifiers 45 */ 46 47 #define _RLIMIT_IDENT 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/proc.h> 52 #include <sys/vnode.h> 53 #include <sys/resourcevar.h> 54 #include <sys/resource.h> 55 #include <sys/types.h> 56 #include <vfs/procfs/procfs.h> 57 58 59 int 60 procfs_dorlimit(struct proc *curp, struct lwp *lp, struct pfsnode *pfs, 61 struct uio *uio) 62 { 63 struct proc *p = lp->lwp_proc; 64 size_t xlen; 65 char *ps; 66 int error; 67 int i; 68 char psbuf[512]; /* XXX - conservative */ 69 70 if (uio->uio_rw != UIO_READ) 71 return (EOPNOTSUPP); 72 73 ps = psbuf; 74 75 for (i = 0; i < RLIM_NLIMITS; i++) { 76 77 /* 78 * Add the rlimit ident 79 */ 80 81 ps += ksprintf(ps, "%s ", rlimit_ident[i]); 82 83 /* 84 * Replace RLIM_INFINITY with -1 in the string 85 */ 86 87 /* 88 * current limit 89 */ 90 91 if (p->p_rlimit[i].rlim_cur == RLIM_INFINITY) { 92 ps += ksprintf(ps, "-1 "); 93 } else { 94 ps += ksprintf(ps, "%llu ", 95 (unsigned long long)p->p_rlimit[i].rlim_cur); 96 } 97 98 /* 99 * maximum limit 100 */ 101 102 if (p->p_rlimit[i].rlim_max == RLIM_INFINITY) { 103 ps += ksprintf(ps, "-1\n"); 104 } else { 105 ps += ksprintf(ps, "%llu\n", 106 (unsigned long long)p->p_rlimit[i].rlim_max); 107 } 108 } 109 110 xlen = ps - psbuf; 111 error = uiomove_frombuf(psbuf, xlen, uio); 112 113 return (error); 114 } 115 116