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/* 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <nlist.h>
#include <procinfo.h>
#include <sys/proc.h>
#include <sys/vminfo.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include "glibtop_suid.h"
#include "utils.h"
#ifndef HAVE_VMGETINFO
#include <dlfcn.h>
typedef int (*vmgetinfo_proto)(void *out, int command, int arg);
#endif
off_t
_glibtop_get_kmem_offset(glibtop* server, char* kname)
{
int result;
struct nlist kernelnames[] =
{ {NULL, 0, 0, 0, 0, 0},
{NULL, 0, 0, 0, 0, 0},
};
kernelnames[0]._n._n_name = kname;
glibtop_suid_enter(server);
result = knlist(kernelnames, 1, sizeof(struct nlist));
glibtop_suid_leave(server);
if (result == -1)
{
return -1;
}
return kernelnames[0].n_value;
}
int
_glibtop_get_kmem_info(glibtop* server, off_t offset, void* buf, size_t len)
{
int result;
glibtop_suid_enter(server);
lseek(server->machine->kmem_fd, offset, SEEK_SET);
result = read(server->machine->kmem_fd, buf, len);
glibtop_suid_leave(server);
return result;
}
struct procsinfo*
_glibtop_get_procinfo (glibtop *server, pid_t pid)
{
int result;
pid_t current;
static int first_time = 1;
/* test if procsinfo already found */
if ((server->machine->last_pinfo.pi_pid == pid) && (!first_time))
{
return &server->machine->last_pinfo;
}
/* seek procsinfo if given pid */
first_time = 0;
current = 0;
while ((result = getprocs( &server->machine->last_pinfo
, sizeof(struct procsinfo)
, NULL, 0, ¤t, 1)) == 1)
{
if (pid == server->machine->last_pinfo.pi_pid)
{
return &server->machine->last_pinfo;
}
}
return NULL;
}
#ifndef HAVE_VMGETINFO
int
_glibtop_vmgetinfo (void *out, int command, int arg)
{
void* handle;
static vmgetinfo_proto kern_vmgetinfo = NULL;
if (kern_vmgetinfo == NULL)
{
handle = dlopen("/unix", RTLD_NOW | RTLD_GLOBAL);
if (handle == NULL)
{
return -1;
}
kern_vmgetinfo = dlsym( handle, "vmgetinfo");
dlclose(handle);
if (kern_vmgetinfo == NULL)
{
return -1;
}
}
return kern_vmgetinfo(out, command, arg);
}
#endif
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