usr/src/lib/libproc/common/pr_getrlimit.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1997-2000 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #define _LARGEFILE64_SOURCE
  30
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <errno.h>
  34 #include <sys/resource.h>
  35 #include "libproc.h"
  36
  37 /*
  38  * getrlimit() system call -- executed by subject process.
  39  */
  40 int
  41 pr_getrlimit(struct ps_prochandle *Pr,
  42         int resource, struct rlimit *rlp)
  43 {
  44         sysret_t rval;                  /* return value from getrlimit() */
  45         argdes_t argd[2];               /* arg descriptors for getrlimit() */
  46         argdes_t *adp;
  47         int sysnum;
  48         int error;
  49
  50         if (Pr == NULL)         /* no subject process */
  51                 return (getrlimit(resource, rlp));
  52
  53         adp = &argd[0];         /* resource argument */
  54         adp->arg_value = resource;
  55         adp->arg_object = NULL;
  56         adp->arg_type = AT_BYVAL;
  57         adp->arg_inout = AI_INPUT;
  58         adp->arg_size = 0;
  59
  60         adp++;                  /* rlp argument */
  61         adp->arg_value = 0;
  62         adp->arg_object = rlp;
  63         adp->arg_type = AT_BYREF;
  64         adp->arg_inout = AI_OUTPUT;
  65         adp->arg_size = sizeof (*rlp);
  66
  67 #ifdef _LP64
  68         if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
  69                 sysnum = SYS_getrlimit64;
  70         else
  71                 sysnum = SYS_getrlimit;
  72 #else   /* _LP64 */
  73         sysnum = SYS_getrlimit;
  74 #endif  /* _LP64 */
  75
  76         error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);
  77
  78         if (error) {
  79                 errno = (error > 0)? error : ENOSYS;
  80                 return (-1);
  81         }
  82         return (rval.sys_rval1);
  83 }
  84
  85 /*
  86  * setrlimit() system call -- executed by subject process.
  87  */
  88 int
  89 pr_setrlimit(struct ps_prochandle *Pr,
  90         int resource, const struct rlimit *rlp)
  91 {
  92         sysret_t rval;                  /* return value from setrlimit() */
  93         argdes_t argd[2];               /* arg descriptors for setrlimit() */
  94         argdes_t *adp;
  95         int sysnum;
  96         int error;
  97
  98         if (Pr == NULL)         /* no subject process */
  99                 return (setrlimit(resource, rlp));
 100
 101         adp = &argd[0];         /* resource argument */
 102         adp->arg_value = resource;
 103         adp->arg_object = NULL;
 104         adp->arg_type = AT_BYVAL;
 105         adp->arg_inout = AI_INPUT;
 106         adp->arg_size = 0;
 107
 108         adp++;                  /* rlp argument */
 109         adp->arg_value = 0;
 110         adp->arg_object = (void *)rlp;
 111         adp->arg_type = AT_BYREF;
 112         adp->arg_inout = AI_INPUT;
 113         adp->arg_size = sizeof (*rlp);
 114
 115 #ifdef _LP64
 116         if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
 117                 sysnum = SYS_setrlimit64;
 118         else
 119                 sysnum = SYS_setrlimit;
 120 #else   /* _LP64 */
 121         sysnum = SYS_setrlimit;
 122 #endif  /* _LP64 */
 123
 124         error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);
 125
 126         if (error) {
 127                 errno = (error > 0)? error : ENOSYS;
 128                 return (-1);
 129         }
 130         return (rval.sys_rval1);
 131 }
 132
 133 /*
 134  * getrlimit64() system call -- executed by subject process.
 135  */
 136 int
 137 pr_getrlimit64(struct ps_prochandle *Pr,
 138         int resource, struct rlimit64 *rlp)
 139 {
 140         sysret_t rval;                  /* return value from getrlimit() */
 141         argdes_t argd[2];               /* arg descriptors for getrlimit() */
 142         argdes_t *adp;
 143         int sysnum;
 144         int error;
 145
 146         if (Pr == NULL)         /* no subject process */
 147                 return (getrlimit64(resource, rlp));
 148
 149         adp = &argd[0];         /* resource argument */
 150         adp->arg_value = resource;
 151         adp->arg_object = NULL;
 152         adp->arg_type = AT_BYVAL;
 153         adp->arg_inout = AI_INPUT;
 154         adp->arg_size = 0;
 155
 156         adp++;                  /* rlp argument */
 157         adp->arg_value = 0;
 158         adp->arg_object = rlp;
 159         adp->arg_type = AT_BYREF;
 160         adp->arg_inout = AI_OUTPUT;
 161         adp->arg_size = sizeof (*rlp);
 162
 163 #ifdef _LP64
 164         if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
 165                 sysnum = SYS_getrlimit64;
 166         else
 167                 sysnum = SYS_getrlimit;
 168 #else   /* _LP64 */
 169         sysnum = SYS_getrlimit64;
 170 #endif  /* _LP64 */
 171
 172         error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);
 173
 174         if (error) {
 175                 errno = (error > 0)? error : ENOSYS;
 176                 return (-1);
 177         }
 178         return (rval.sys_rval1);
 179 }
 180
 181 /*
 182  * setrlimit64() system call -- executed by subject process.
 183  */
 184 int
 185 pr_setrlimit64(struct ps_prochandle *Pr,
 186         int resource, const struct rlimit64 *rlp)
 187 {
 188         sysret_t rval;                  /* return value from setrlimit() */
 189         argdes_t argd[2];               /* arg descriptors for setrlimit() */
 190         argdes_t *adp;
 191         int sysnum;
 192         int error;
 193
 194         if (Pr == NULL)         /* no subject process */
 195                 return (setrlimit64(resource, rlp));
 196
 197         adp = &argd[0];         /* resource argument */
 198         adp->arg_value = resource;
 199         adp->arg_object = NULL;
 200         adp->arg_type = AT_BYVAL;
 201         adp->arg_inout = AI_INPUT;
 202         adp->arg_size = 0;
 203
 204         adp++;                  /* rlp argument */
 205         adp->arg_value = 0;
 206         adp->arg_object = (void *)rlp;
 207         adp->arg_type = AT_BYREF;
 208         adp->arg_inout = AI_INPUT;
 209         adp->arg_size = sizeof (*rlp);
 210
 211 #ifdef _LP64
 212         if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
 213                 sysnum = SYS_setrlimit64;
 214         else
 215                 sysnum = SYS_setrlimit;
 216 #else   /* _LP64 */
 217         sysnum = SYS_setrlimit64;
 218 #endif  /* _LP64 */
 219
 220         error = Psyscall(Pr, &rval, sysnum, 2, &argd[0]);
 221
 222         if (error) {
 223                 errno = (error > 0)? error : ENOSYS;
 224                 return (-1);
 225         }
 226         return (rval.sys_rval1);
 227 }