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 * $DragonFly: src/sys/vfs/procfs/procfs_rlimit.c,v 1.7 2007/02/19 01:14:24 corecode Exp $ 37 */ 38 39 /* 40 * To get resource.h to include our rlimit_ident[] array of rlimit identifiers 41 */ 42 43 #define _RLIMIT_IDENT 44 45 #include <sys/param.h> 46 #include <sys/systm.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 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