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) 1998-2001 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 #include <stdlib.h>
28 #include <unistd.h>
29 #include <errno.h>
30 #include <sys/types.h>
31 #include <sys/mman.h>
32 #include "libproc.h"
33
34 /*
35 * memcntl() system call -- executed by subject process
36 */
37
38 int
pr_memcntl(struct ps_prochandle * Pr,caddr_t addr,size_t len,int cmd,caddr_t arg,int attr,int mask)39 pr_memcntl(struct ps_prochandle *Pr,
40 caddr_t addr, size_t len, int cmd, caddr_t arg, int attr, int mask)
41 {
42 sysret_t rval; /* return value from memcntl() */
43 argdes_t argd[6]; /* arg descriptors for memcntl() */
44 argdes_t *adp;
45 int error;
46
47 if (Pr == NULL) /* no subject process */
48 return (memcntl(addr, len, cmd, arg, attr, mask));
49
50 adp = &argd[0]; /* addr argument */
51 adp->arg_value = (uintptr_t)addr;
52 adp->arg_object = NULL;
53 adp->arg_type = AT_BYVAL;
54 adp->arg_inout = AI_INPUT;
55 adp->arg_size = 0;
56
57 adp++; /* len argument */
58 adp->arg_value = len;
59 adp->arg_object = NULL;
60 adp->arg_type = AT_BYVAL;
61 adp->arg_inout = AI_INPUT;
62 adp->arg_size = 0;
63
64 adp++; /* cmd argument */
65 adp->arg_value = cmd;
66 adp->arg_object = NULL;
67 adp->arg_type = AT_BYVAL;
68 adp->arg_inout = AI_INPUT;
69 adp->arg_size = 0;
70
71 adp++; /* arg argument */
72 if (cmd == MC_HAT_ADVISE) {
73 adp->arg_value = 0;
74 adp->arg_object = arg;
75 adp->arg_type = AT_BYREF;
76 adp->arg_inout = AI_INPUT;
77 #ifdef _LP64
78 if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
79 adp->arg_size = sizeof (struct memcntl_mha32);
80 else
81 adp->arg_size = sizeof (struct memcntl_mha);
82 #else
83 adp->arg_size = sizeof (struct memcntl_mha);
84 #endif
85 } else {
86 adp->arg_value = (uintptr_t)arg;
87 adp->arg_object = NULL;
88 adp->arg_type = AT_BYVAL;
89 adp->arg_inout = AI_INPUT;
90 adp->arg_size = 0;
91 }
92
93 adp++; /* attr argument */
94 adp->arg_value = attr;
95 adp->arg_object = NULL;
96 adp->arg_type = AT_BYVAL;
97 adp->arg_inout = AI_INPUT;
98 adp->arg_size = 0;
99
100 adp++; /* mask argument */
101 adp->arg_value = mask;
102 adp->arg_object = NULL;
103 adp->arg_type = AT_BYVAL;
104 adp->arg_inout = AI_INPUT;
105 adp->arg_size = 0;
106
107 error = Psyscall(Pr, &rval, SYS_memcntl, 6, &argd[0]);
108
109 if (error) {
110 errno = (error > 0)? error : ENOSYS;
111 return (-1);
112 }
113 return (0);
114 }
115