1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <limits.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>
#include "Pcontrol.h"
#include "Putil.h"
/*
* Place the new element on the list prior to the existing element.
*/
void
list_link(void *new, void *existing)
{
plist_t *p = new;
plist_t *q = existing;
if (q) {
p->list_forw = q;
p->list_back = q->list_back;
q->list_back->list_forw = p;
q->list_back = p;
} else {
p->list_forw = p->list_back = p;
}
}
/*
* Unchain the specified element from a list.
*/
void
list_unlink(void *old)
{
plist_t *p = old;
if (p->list_forw != p) {
p->list_back->list_forw = p->list_forw;
p->list_forw->list_back = p->list_back;
}
p->list_forw = p->list_back = p;
}
/*
* Routines to manipulate sigset_t, fltset_t, or sysset_t. These routines
* are provided as equivalents for the <sys/procfs.h> macros prfillset,
* premptyset, praddset, and prdelset. These functions are preferable
* because they are not macros which rely on using sizeof (*sp), and thus
* can be used to create common code to manipulate event sets. The set
* size must be passed explicitly, e.g. : prset_fill(&set, sizeof (set));
*/
void
prset_fill(void *sp, size_t size)
{
size_t i = size / sizeof (uint32_t);
while (i != 0)
((uint32_t *)sp)[--i] = (uint32_t)0xFFFFFFFF;
}
void
prset_empty(void *sp, size_t size)
{
size_t i = size / sizeof (uint32_t);
while (i != 0)
((uint32_t *)sp)[--i] = (uint32_t)0;
}
void
prset_add(void *sp, size_t size, uint_t flag)
{
if (flag - 1 < 32 * size / sizeof (uint32_t))
((uint32_t *)sp)[(flag - 1) / 32] |= 1U << ((flag - 1) % 32);
}
void
prset_del(void *sp, size_t size, uint_t flag)
{
if (flag - 1 < 32 * size / sizeof (uint32_t))
((uint32_t *)sp)[(flag - 1) / 32] &= ~(1U << ((flag - 1) % 32));
}
int
prset_ismember(void *sp, size_t size, uint_t flag)
{
return ((flag - 1 < 32 * size / sizeof (uint32_t)) &&
(((uint32_t *)sp)[(flag - 1) / 32] & (1U << ((flag - 1) % 32))));
}
/*
* If _libproc_debug is set, printf the debug message to stderr
* with an appropriate prefix.
*/
/*PRINTFLIKE1*/
void
dprintf(const char *format, ...)
{
if (_libproc_debug) {
va_list alist;
va_start(alist, format);
(void) fputs("libproc DEBUG: ", stderr);
(void) vfprintf(stderr, format, alist);
va_end(alist);
}
}
/*
* Printf-style error reporting function. This is used to supplement the error
* return codes from various libproc functions with additional text. Since we
* are a library, and should not be spewing messages to stderr, we provide a
* default version of this function that does nothing, but by calling this
* function we allow the client program to define its own version of the
* function that will interpose on our empty default. This may be useful for
* clients that wish to display such messages to the user.
*/
/*ARGSUSED*/
/*PRINTFLIKE2*/
void
Perror_printf(struct ps_prochandle *P, const char *format, ...)
{
/* nothing to do here */
}
|
