usr/src/lib/libproc/common/pr_getrctl.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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 #define _LARGEFILE64_SOURCE
  29
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32 #include <errno.h>
  33 #include <strings.h>
  34 #include "libproc.h"
  35 #include <sys/rctl_impl.h>
  36
  37 /*
  38  * getrctl() system call -- executed by subject process
  39  */
  40 int
  41 pr_getrctl(struct ps_prochandle *Pr, const char *rname,
  42         rctlblk_t *old_blk, rctlblk_t *new_blk, int rflag)
  43 {
  44         sysret_t rval;
  45         argdes_t argd[6];
  46         argdes_t *adp;
  47         int error;
  48
  49         if (Pr == NULL)         /* no subject process */
  50                 return (getrctl(rname, old_blk, new_blk, rflag));
  51
  52         adp = &argd[0];
  53         adp->arg_value = 0;     /* switch for getrctl in rctlsys */
  54         adp->arg_object = NULL;
  55         adp->arg_type = AT_BYVAL;
  56         adp->arg_inout = AI_INPUT;
  57         adp->arg_size = 0;
  58
  59         adp++;
  60         adp->arg_value = 0;
  61         adp->arg_object = (void *)rname;
  62         adp->arg_type = AT_BYREF;
  63         adp->arg_inout = AI_INPUT;
  64         adp->arg_size = strlen(rname) + 1;
  65
  66         adp++;
  67         if (old_blk == NULL) {
  68                 adp->arg_value = 0;
  69                 adp->arg_object = NULL;
  70                 adp->arg_type = AT_BYVAL;
  71                 adp->arg_inout = AI_INPUT;
  72                 adp->arg_size = 0;
  73         } else {
  74                 adp->arg_value = 0;
  75                 adp->arg_object = old_blk;
  76                 adp->arg_type = AT_BYREF;
  77                 adp->arg_inout = AI_INPUT;
  78                 adp->arg_size = rctlblk_size();
  79         }
  80
  81         adp++;
  82         if (new_blk == NULL) {
  83                 adp->arg_value = 0;
  84                 adp->arg_object = NULL;
  85                 adp->arg_type = AT_BYVAL;
  86                 adp->arg_inout = AI_OUTPUT;
  87                 adp->arg_size = 0;
  88         } else {
  89                 adp->arg_value = 0;
  90                 adp->arg_object = new_blk;
  91                 adp->arg_type = AT_BYREF;
  92                 adp->arg_inout = AI_INOUT;
  93                 adp->arg_size = rctlblk_size();
  94         }
  95
  96         adp++;
  97         adp->arg_value = 0;             /* obufsz isn't used by getrctl() */
  98         adp->arg_object = NULL;
  99         adp->arg_type = AT_BYVAL;
 100         adp->arg_inout = AI_INPUT;
 101         adp->arg_size = 0;
 102
 103         adp++;
 104         adp->arg_value = rflag;
 105         adp->arg_object = NULL;
 106         adp->arg_type = AT_BYVAL;
 107         adp->arg_inout = AI_INPUT;
 108         adp->arg_size = 0;
 109
 110         error = Psyscall(Pr, &rval, SYS_rctlsys, 6, &argd[0]);
 111
 112         if (error) {
 113                 errno = (error > 0) ? error : ENOSYS;
 114                 return (-1);
 115         }
 116         return (rval.sys_rval1);
 117 }
 118
 119 /*
 120  * setrctl() system call -- executed by subject process
 121  */
 122 int
 123 pr_setrctl(struct ps_prochandle *Pr, const char *rname,
 124         rctlblk_t *old_blk, rctlblk_t *new_blk, int rflag)
 125 {
 126         sysret_t rval;
 127         argdes_t argd[6];
 128         argdes_t *adp;
 129         int error;
 130
 131         if (Pr == NULL)         /* no subject process */
 132                 return (setrctl(rname, old_blk, new_blk, rflag));
 133
 134         adp = &argd[0];
 135         adp->arg_value = 1;     /* switch for setrctl in rctlsys */
 136         adp->arg_object = NULL;
 137         adp->arg_type = AT_BYVAL;
 138         adp->arg_inout = AI_INPUT;
 139         adp->arg_size = 0;
 140
 141         adp++;
 142         adp->arg_value = 0;
 143         adp->arg_object = (void *)rname;
 144         adp->arg_type = AT_BYREF;
 145         adp->arg_inout = AI_INPUT;
 146         adp->arg_size = strlen(rname) + 1;
 147
 148         adp++;
 149         if (old_blk == NULL) {
 150                 adp->arg_value = 0;
 151                 adp->arg_object = NULL;
 152                 adp->arg_type = AT_BYVAL;
 153                 adp->arg_inout = AI_INPUT;
 154                 adp->arg_size = 0;
 155         } else {
 156                 adp->arg_value = 0;
 157                 adp->arg_object = old_blk;
 158                 adp->arg_type = AT_BYREF;
 159                 adp->arg_inout = AI_INPUT;
 160                 adp->arg_size = rctlblk_size();
 161         }
 162
 163         adp++;
 164         if (new_blk == NULL) {
 165                 adp->arg_value = 0;
 166                 adp->arg_object = NULL;
 167                 adp->arg_type = AT_BYVAL;
 168                 adp->arg_inout = AI_INPUT;
 169                 adp->arg_size = 0;
 170         } else {
 171                 adp->arg_value = 0;
 172                 adp->arg_object = new_blk;
 173                 adp->arg_type = AT_BYREF;
 174                 adp->arg_inout = AI_INPUT;
 175                 adp->arg_size = rctlblk_size();
 176         }
 177
 178         adp++;
 179         adp->arg_value = 0;             /* obufsz isn't used by setrctl() */
 180         adp->arg_object = NULL;
 181         adp->arg_type = AT_BYVAL;
 182         adp->arg_inout = AI_INPUT;
 183         adp->arg_size = 0;
 184
 185         adp++;
 186         adp->arg_value = rflag;
 187         adp->arg_object = NULL;
 188         adp->arg_type = AT_BYVAL;
 189         adp->arg_inout = AI_INPUT;
 190         adp->arg_size = 0;
 191
 192         error = Psyscall(Pr, &rval, SYS_rctlsys, 6, &argd[0]);
 193
 194         if (error) {
 195                 errno = (error > 0) ? error : ENOSYS;
 196                 return (-1);
 197         }
 198         return (rval.sys_rval1);
 199 }
 200
 201 /*
 202  * setprojrctl() system call -- executed by subject process
 203  */
 204 int
 205 pr_setprojrctl(struct ps_prochandle *Pr, const char *rname,
 206         rctlblk_t *new_blk, size_t size, int rflag)
 207 {
 208         sysret_t rval;
 209         argdes_t argd[6];
 210         argdes_t *adp;
 211         int error;
 212
 213         if (Pr == NULL)         /* no subject process */
 214                 return (setprojrctl(rname, new_blk, size, rflag));
 215
 216         adp = &argd[0];
 217         adp->arg_value = 4;     /* switch for setprojrctls in rctlsys */
 218         adp->arg_object = NULL;
 219         adp->arg_type = AT_BYVAL;
 220         adp->arg_inout = AI_INPUT;
 221         adp->arg_size = 0;
 222
 223         adp++;
 224         adp->arg_value = 0;
 225         adp->arg_object = (void *)rname;
 226         adp->arg_type = AT_BYREF;
 227         adp->arg_inout = AI_INPUT;
 228         adp->arg_size = strlen(rname) + 1;
 229
 230         adp++;
 231         adp->arg_value = 0;     /* old_blk is not used by setprojrctls() */
 232         adp->arg_object = NULL;
 233         adp->arg_type = AT_BYVAL;
 234         adp->arg_inout = AI_INPUT;
 235         adp->arg_size = 0;
 236
 237
 238         adp++;
 239         if (new_blk == NULL) {
 240                 adp->arg_value = 0;
 241                 adp->arg_object = NULL;
 242                 adp->arg_type = AT_BYVAL;
 243                 adp->arg_inout = AI_INPUT;
 244                 adp->arg_size = 0;
 245         } else {
 246                 adp->arg_value = 0;
 247                 adp->arg_object = new_blk;
 248                 adp->arg_type = AT_BYREF;
 249                 adp->arg_inout = AI_INPUT;
 250                 adp->arg_size = rctlblk_size() * size;
 251         }
 252
 253         adp++;
 254         adp->arg_value = size;          /* obufsz is used by setrctls() */
 255         adp->arg_object = NULL;
 256         adp->arg_type = AT_BYVAL;
 257         adp->arg_inout = AI_INPUT;
 258         adp->arg_size = 0;
 259
 260         adp++;
 261         adp->arg_value = rflag;
 262         adp->arg_object = NULL;
 263         adp->arg_type = AT_BYVAL;
 264         adp->arg_inout = AI_INPUT;
 265         adp->arg_size = 0;
 266
 267         error = Psyscall(Pr, &rval, SYS_rctlsys, 6, &argd[0]);
 268
 269         if (error) {
 270                 errno = (error > 0) ? error : ENOSYS;
 271                 return (-1);
 272         }
 273         return (rval.sys_rval1);
 274 }