78cb7832c5
* configure.in: * include/glibtop/Makefile.am: * include/glibtop/glibtop-server.h: * include/glibtop/init_hooks.h: * include/glibtop/sysdeps.h: * lib/init.c: (glibtop_init_s): * lib/sysdeps.c: * sysdeps/aix/open.c: (glibtop_init_p): * sysdeps/common/sysdeps_suid.c: * sysdeps/freebsd/open.c: (glibtop_init_p): * sysdeps/osf1/open_suid.c: (glibtop_init_p): * sysdeps/solaris/open_suid.c: (glibtop_init_p): * sysdeps/stub_suid/open.c: (glibtop_init_p): Moved _glibtop_init_hook_[sp] declaration to private glibtop/init_hooks.h. Marked them const. Fixed GLIBTOP_SUID_NETLIST issues.
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/* $Id$ */
|
|
|
|
/* 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 <glibtop.h>
|
|
#include <glibtop/open.h>
|
|
#include <glibtop/init_hooks.h>
|
|
|
|
/* !!! THIS FUNCTION RUNS SUID ROOT - CHANGE WITH CAUTION !!! */
|
|
|
|
void
|
|
glibtop_init_p (glibtop *server, const unsigned long features,
|
|
const unsigned flags)
|
|
{
|
|
const glibtop_init_func_t *init_fkt;
|
|
|
|
if (server == NULL)
|
|
glibtop_error_r (NULL, "glibtop_init_p (server == NULL)");
|
|
|
|
/* Do the initialization, but only if not already initialized. */
|
|
|
|
if ((server->flags & _GLIBTOP_INIT_STATE_SYSDEPS) == 0) {
|
|
glibtop_open_p (server, "glibtop", features, flags);
|
|
|
|
for (init_fkt = _glibtop_init_hook_p; *init_fkt; init_fkt++)
|
|
(*init_fkt) (server);
|
|
|
|
server->flags |= _GLIBTOP_INIT_STATE_SYSDEPS;
|
|
}
|
|
}
|
|
|
|
void
|
|
glibtop_open_p (glibtop *server, const char *program_name,
|
|
const unsigned long features,
|
|
const unsigned flags)
|
|
{
|
|
#ifdef DEBUG
|
|
fprintf (stderr, "DEBUG (%d): glibtop_open_p ()\n", getpid ());
|
|
#endif
|
|
|
|
/* !!! WE ARE ROOT HERE - CHANGE WITH CAUTION !!! */
|
|
|
|
server->machine.uid = getuid ();
|
|
server->machine.euid = geteuid ();
|
|
server->machine.gid = getgid ();
|
|
server->machine.egid = getegid ();
|
|
|
|
#ifdef __FreeBSD__
|
|
server->os_version_code = __FreeBSD_version;
|
|
#endif
|
|
|
|
/* Setup machine-specific data */
|
|
server->machine.kd = kvm_open (NULL, NULL, NULL, O_RDONLY, "kvm_open");
|
|
|
|
if (server->machine.kd == NULL)
|
|
glibtop_error_io_r (server, "kvm_open");
|
|
|
|
/* Drop priviledges. */
|
|
|
|
if (setreuid (server->machine.euid, server->machine.uid))
|
|
_exit (1);
|
|
|
|
if (setregid (server->machine.egid, server->machine.gid))
|
|
_exit (1);
|
|
|
|
/* !!! END OF SUID ROOT PART !!! */
|
|
|
|
/* Our effective uid is now those of the user invoking the server,
|
|
* so we do no longer have any priviledges. */
|
|
|
|
/* NOTE: On FreeBSD, we do not need to be suid root, we just need to
|
|
* be sgid kmem.
|
|
*
|
|
* The server will only use setegid() to get back it's priviledges,
|
|
* so it will fail if it is suid root and not sgid kmem. */
|
|
}
|