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
|
/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
LibGTop is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
LibGTop is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/shm_limits.h>
#include <glibtop_suid.h>
/* #define KERNEL to get declaration of `struct shminfo'. */
#define KERNEL
#include <sys/ipc.h>
#include <sys/shm.h>
static unsigned long _glibtop_sysdeps_shm_limits =
(1 << GLIBTOP_IPC_SHMMAX) + (1 << GLIBTOP_IPC_SHMMIN) +
(1 << GLIBTOP_IPC_SHMMNI) + (1 << GLIBTOP_IPC_SHMSEG) +
(1 << GLIBTOP_IPC_SHMALL);
/* Provides information about sysv ipc limits. */
void
glibtop_get_shm_limits_p (glibtop *server, glibtop_shm_limits *buf)
{
struct shminfo shminfo;
glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_SHM_LIMITS), 0);
memset (buf, 0, sizeof (glibtop_shm_limits));
/* !!! THE FOLLOWING CODE RUNS SGID KMEM - CHANGE WITH CAUTION !!! */
setregid (server->machine.gid, server->machine.egid);
/* get the load average array */
(void) _glibtop_getkval (server, _glibtop_nlist [X_SHMINFO].n_value,
(int *) &shminfo, sizeof (shminfo),
_glibtop_nlist [X_SHMINFO].n_name);
if (setregid (server->machine.egid, server->machine.gid))
_exit (1);
/* !!! END OF SGID KMEM PART !!! */
buf->shmmax = shminfo.shmmax;
buf->shmmin = shminfo.shmmin;
buf->shmmni = shminfo.shmmni;
buf->shmseg = shminfo.shmseg;
buf->shmall = shminfo.shmall;
buf->flags = _glibtop_sysdeps_shm_limits;
}
|
