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
153
154
155
156
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright 2011 Joyent, Inc. All rights reserved.
*/
#include <procfs.h>
#include <project.h>
#include <stdlib.h>
#include <strings.h>
#include <zone.h>
#include <libzonecfg.h>
#include <dirent.h>
#include <libproc.h>
#include "rcapd.h"
#include "utils.h"
extern boolean_t gz_capped;
/* round up to next y = 2^n */
#define ROUNDUP(x, y) (((x) + ((y) - 1)) & ~((y) - 1))
static struct ps_prochandle *
grab_zone_proc(zoneid_t zid)
{
DIR *dirp;
struct dirent *dentp;
int pid, pid_self, tmp;
psinfo_t psinfo;
struct ps_prochandle *pr = NULL;
pid_self = getpid();
if ((dirp = opendir("/proc")) == NULL)
return (NULL);
while (dentp = readdir(dirp)) {
pid = atoi(dentp->d_name);
/* Skip self */
if (pid == pid_self)
continue;
if (proc_get_psinfo(pid, &psinfo) != 0)
continue;
if (psinfo.pr_zoneid != zid)
continue;
/* attempt to grab process */
if ((pr = Pgrab(pid, 0, &tmp)) != NULL) {
if (Psetflags(pr, PR_RLC) != 0) {
Prelease(pr, 0);
}
if (Pcreate_agent(pr) == 0) {
if (pr_getzoneid(pr) != zid) {
Prelease(pr, 0);
continue;
}
(void) closedir(dirp);
return (pr);
} else {
Prelease(pr, 0);
}
}
}
(void) closedir(dirp);
return (NULL);
}
static uint64_t
get_zone_cap(zoneid_t zid)
{
rctlblk_t *rblk;
uint64_t mcap;
struct ps_prochandle *pr;
if ((rblk = (rctlblk_t *)malloc(rctlblk_size())) == NULL)
return (UINT64_MAX);
if ((pr = grab_zone_proc(zid)) == NULL) {
free(rblk);
return (UINT64_MAX);
}
if (pr_getrctl(pr, "zone.max-physical-memory", NULL, rblk,
RCTL_FIRST)) {
Pdestroy_agent(pr);
Prelease(pr, 0);
free(rblk);
return (UINT64_MAX);
}
Pdestroy_agent(pr);
Prelease(pr, 0);
mcap = rctlblk_get_value(rblk);
free(rblk);
return (mcap);
}
/*
* For zones, rcapd only caps the global zone, since each non-global zone
* caps itself.
*/
/* ARGSUSED */
void
lcollection_update_zone(lcollection_update_type_t ut,
void(*update_notification_cb)(char *, char *, int, uint64_t, int))
{
int changes;
int64_t max_rss;
uint64_t mcap;
lcollection_t *lcol;
rcid_t colid;
mcap = get_zone_cap(GLOBAL_ZONEID);
if (mcap != 0 && mcap != UINT64_MAX) {
max_rss = ROUNDUP(mcap, 1024) / 1024;
gz_capped = B_TRUE;
} else {
max_rss = UINT64_MAX / 1024;
gz_capped = B_FALSE;
}
colid.rcid_type = RCIDT_ZONE;
colid.rcid_val = GLOBAL_ZONEID;
lcol = lcollection_insert_update(&colid, max_rss, GLOBAL_ZONENAME,
&changes);
if (update_notification_cb != NULL)
update_notification_cb("zone", GLOBAL_ZONENAME, changes,
max_rss, (lcol != NULL) ? lcol->lcol_mark : 0);
}
|
