140 lines
2.9 KiB
C
140 lines
2.9 KiB
C
/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <nlist.h>
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#include <procinfo.h>
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#include <sys/proc.h>
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#include <sys/vminfo.h>
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include "glibtop_suid.h"
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#include "utils.h"
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#ifndef HAVE_VMGETINFO
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#include <dlfcn.h>
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typedef int (*vmgetinfo_proto)(void *out, int command, int arg);
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#endif
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off_t
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_glibtop_get_kmem_offset(glibtop* server, char* kname)
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{
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int result;
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struct nlist kernelnames[] =
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{ {NULL, 0, 0, 0, 0, 0},
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{NULL, 0, 0, 0, 0, 0},
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};
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kernelnames[0]._n._n_name = kname;
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glibtop_suid_enter(server);
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result = knlist(kernelnames, 1, sizeof(struct nlist));
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glibtop_suid_leave(server);
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if (result == -1)
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{
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return -1;
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}
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return kernelnames[0].n_value;
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}
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int
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_glibtop_get_kmem_info(glibtop* server, off_t offset, void* buf, size_t len)
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{
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int result;
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glibtop_suid_enter(server);
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lseek(server->machine.kmem_fd, offset, SEEK_SET);
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result = read(server->machine.kmem_fd, buf, len);
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glibtop_suid_leave(server);
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return result;
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}
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struct procsinfo*
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_glibtop_get_procinfo (glibtop *server, pid_t pid)
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{
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int result;
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pid_t current;
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static int first_time = 1;
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/* test if procsinfo already found */
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if ((server->machine.last_pinfo.pi_pid == pid) && (!first_time))
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{
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return &server->machine.last_pinfo;
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}
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/* seek procsinfo if given pid */
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first_time = 0;
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current = 0;
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while ((result = getprocs( &server->machine.last_pinfo
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, sizeof(struct procsinfo)
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, NULL, 0, ¤t, 1)) == 1)
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{
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if (pid == server->machine.last_pinfo.pi_pid)
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{
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return &server->machine.last_pinfo;
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}
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}
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return NULL;
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}
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#ifndef HAVE_VMGETINFO
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int
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_glibtop_vmgetinfo (void *out, int command, int arg)
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{
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void* handle;
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static vmgetinfo_proto kern_vmgetinfo = NULL;
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if (kern_vmgetinfo == NULL)
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{
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handle = dlopen("/unix", RTLD_NOW | RTLD_GLOBAL);
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if (handle == NULL)
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{
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return -1;
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}
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kern_vmgetinfo = dlsym( handle, "vmgetinfo");
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dlclose(handle);
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if (kern_vmgetinfo == NULL)
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{
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return -1;
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}
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}
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return kern_vmgetinfo(out, command, arg);
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}
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#endif
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