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
|
/* Copyright (C) 1998 Joshua Sled
This file is part of LibGTop 1.0.
Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 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/error.h>
#include <glibtop/proclist.h>
#include <glibtop_suid.h>
static const unsigned long _glibtop_sysdeps_proclist =
(1L << GLIBTOP_PROCLIST_TOTAL) + (1L << GLIBTOP_PROCLIST_NUMBER) +
(1L << GLIBTOP_PROCLIST_SIZE);
/* Fetch list of currently running processes.
* The interface of this function is a little bit different from the others:
* buf->flags is only set if the call succeeded, in this case pids_chain,
* a list of the pids of all currently running processes is returned,
* buf->number is the number of elements of this list and buf->size is
* the size of one single element (sizeof (unsigned)). The total size is
* stored in buf->total.
*
* The calling function has to free the memory to which a pointer is returned.
*
* IMPORTANT NOTE:
* On error, this function MUST return NULL and set buf->flags to zero !
* On success, it returnes a pointer to a list of buf->number elements
* each buf->size big. The total size is stored in buf->total.
* The calling function has to free the memory to which a pointer is returned.
*
* On error, NULL is returned and buf->flags is zero. */
/* Init function. */
void
_glibtop_init_proclist_p (glibtop *server)
{
server->sysdeps.proclist = _glibtop_sysdeps_proclist;
}
pid_t *
glibtop_get_proclist_p (glibtop *server, glibtop_proclist *buf,
gint64 real_which, gint64 arg)
{
struct kinfo_proc *pinfo;
unsigned *pids = NULL;
int which, count;
int i,j;
glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROCLIST), 0);
memset (buf, 0, sizeof (glibtop_proclist));
which = (int)(real_which & GLIBTOP_KERN_PROC_MASK);
/* Get the process data */
pinfo = kvm_getprocs (server->machine.kd, which, arg,
sizeof (*pinfo), &count);
if ((pinfo == NULL) || (count < 1)) {
glibtop_warn_io_r (server, "kvm_getprocs (proclist)");
return NULL;
}
count--;
/* Allocate count objects in the pids_chain array
* Same as malloc is pids is NULL, which it is. */
pids = g_realloc (pids, count * sizeof (unsigned));
/* Copy the pids over to this chain */
for (i=j=0; i < count; i++) {
#define PROC_STAT p_stat
#define PROC_RUID p_ruid
#define PROC_PID p_pid
if ((real_which & GLIBTOP_EXCLUDE_IDLE) &&
(pinfo[i].PROC_STAT != SRUN))
continue;
else if ((real_which & GLIBTOP_EXCLUDE_SYSTEM) &&
(pinfo[i].PROC_RUID == 0))
continue;
pids [j++] = (unsigned) pinfo[i].PROC_PID;
} /* end for */
/* Set the fields in buf */
buf->number = j;
buf->size = sizeof (unsigned);
buf->total = j * sizeof (unsigned);
buf->flags = _glibtop_sysdeps_proclist;
return pids;
}
|
