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 2006 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 #include <procfs.h>
29 #include <project.h>
30 #include <stdlib.h>
31 #include <strings.h>
32 #include "rcapd.h"
33 #include "utils.h"
34
35 /* absolute cap name */
36 #define PJ_ABS_ATTR_NAME "rcap.max-rss"
37 /* round up to next y = 2^n */
38 #define ROUNDUP(x, y) (((x) + ((y) - 1)) & ~((y) - 1))
39
40 static int
lcollection_update_project_cb(const struct project * proj,void * walk_data)41 lcollection_update_project_cb(const struct project *proj, void *walk_data)
42 {
43 void(*update_notification_cb)(char *, char *, int, uint64_t, int) =
44 (void(*)(char *, char *, int, uint64_t, int))walk_data;
45 char *capattr_abs;
46 char *end;
47 int changes;
48 int64_t max_rss;
49 lcollection_t *lcol;
50 rcid_t colid;
51
52 capattr_abs = strstr(proj->pj_attr, PJ_ABS_ATTR_NAME "=");
53 if (capattr_abs != NULL) {
54 if (capattr_abs > proj->pj_attr)
55 if (*(capattr_abs - 1) != ';') {
56 /*
57 * PJ_ABS_ATTR_NAME only matched part
58 * of an attribute.
59 */
60 return (0);
61 }
62 capattr_abs += strlen(PJ_ABS_ATTR_NAME "=");
63 max_rss = ROUNDUP(strtoll(capattr_abs, &end, 10), 1024) / 1024;
64 if (end == capattr_abs || *end != ';' && *end != 0)
65 warn(gettext("project %s: malformed %s value '%s'\n"),
66 proj->pj_name, PJ_ABS_ATTR_NAME, capattr_abs);
67 } else
68 max_rss = 0;
69
70 colid.rcid_type = RCIDT_PROJECT;
71 colid.rcid_val = proj->pj_projid;
72
73 lcol = lcollection_insert_update(&colid, max_rss, proj->pj_name,
74 &changes);
75 if (update_notification_cb != NULL)
76 update_notification_cb("project", proj->pj_name, changes,
77 max_rss, (lcol != NULL) ? lcol->lcol_mark : 0);
78
79 return (0);
80 }
81
82 static int
lcollection_update_project_byid_cb(const projid_t id,void * walk_data)83 lcollection_update_project_byid_cb(const projid_t id, void *walk_data)
84 {
85 char buf[PROJECT_BUFSZ];
86 struct project proj;
87
88 if (getprojbyid(id, &proj, buf, sizeof (buf)) != NULL && proj.pj_attr !=
89 NULL)
90 return (lcollection_update_project_cb(&proj, walk_data));
91
92 return (0);
93 }
94
95 static int
lcollection_update_onceactive_cb(lcollection_t * lcol,void * walk_data)96 lcollection_update_onceactive_cb(lcollection_t *lcol, void *walk_data)
97 {
98 void(*update_notification_cb)(char *, char *, int, uint64_t, int) =
99 (void(*)(char *, char *, int, uint64_t, int))walk_data;
100
101 if (lcol->lcol_id.rcid_type != RCIDT_PROJECT)
102 return (0);
103
104 return (lcollection_update_project_byid_cb(lcol->lcol_id.rcid_val,
105 (void *)update_notification_cb));
106 }
107
108 static int
project_walk_all(int (* cb)(const struct project *,void *),void * walk_data)109 project_walk_all(int(*cb)(const struct project *, void *), void *walk_data)
110 {
111 char buf[PROJECT_BUFSZ];
112 struct project proj;
113 int res = 0;
114
115 setprojent();
116 while (getprojent(&proj, buf, sizeof (buf)) != NULL && res == 0)
117 res = cb(&proj, walk_data);
118 endprojent();
119
120 return (res);
121 }
122
123 void
lcollection_update_project(lcollection_update_type_t ut,void (* update_notification_cb)(char *,char *,int,uint64_t,int))124 lcollection_update_project(lcollection_update_type_t ut,
125 void(*update_notification_cb)(char *, char *, int, uint64_t, int))
126 {
127 switch (ut) {
128 case LCU_ACTIVE_ONLY:
129 /*
130 * Enumerate active projects. This is much faster than
131 * enumerating all projects (as is done below, in the default
132 * case), and is done to efficiently and incrementally update
133 * lcollection with capped projects. The default case performs
134 * the initialization.
135 */
136 (void) project_walk(lcollection_update_project_byid_cb,
137 (void *)update_notification_cb);
138 /*
139 * Enumerate once-active projects, including the active
140 * projects just enumerated, meaning active projects will be
141 * updated and marked twice.
142 */
143 list_walk_collection(lcollection_update_onceactive_cb,
144 (void *)update_notification_cb);
145 break;
146 default:
147 /*
148 * Enumerate all projects.
149 */
150 (void) project_walk_all(lcollection_update_project_cb,
151 (void *)update_notification_cb);
152 }
153 }
154