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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* (c) 2000 Eazel, Inc.
* (c) 2001,2002 George Lebl
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _GDM_COMMON_UNKNOWN_H
#define _GDM_COMMON_UNKNOWN_H
#include <glib.h>
#include <glib/gstdio.h>
#include <time.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
G_BEGIN_DECLS
#define VE_IGNORE_EINTR(expr) \
do { \
errno = 0; \
expr; \
} while G_UNLIKELY (errno == EINTR);
#define NEVER_FAILS_seteuid(uid) \
{ int r = 0; \
if (geteuid () != uid) \
r = seteuid (uid); \
if G_UNLIKELY (r != 0) \
g_error ("GDM file %s: line %d (%s): Cannot run seteuid to %d: %s", \
__FILE__, \
__LINE__, \
G_GNUC_PRETTY_FUNCTION, \
(int)uid, \
strerror (errno)); }
#define NEVER_FAILS_setegid(gid) \
{ int r = 0; \
if (getegid () != gid) \
r = setegid (gid); \
if G_UNLIKELY (r != 0) \
g_error ("GDM file %s: line %d (%s): Cannot run setegid to %d: %s", \
__FILE__, \
__LINE__, \
G_GNUC_PRETTY_FUNCTION, \
(int)gid, \
strerror (errno)); }
/* first goes to euid-root and then sets the egid and euid, to make sure
* this succeeds */
#define NEVER_FAILS_root_set_euid_egid(uid,gid) \
{ NEVER_FAILS_seteuid (0); \
NEVER_FAILS_setegid (gid); \
if (uid != 0) { NEVER_FAILS_seteuid (uid); } }
/* like fopen with "w" but unlinks and uses O_EXCL */
FILE * gdm_safe_fopen_w (const char *file,
mode_t perm);
/* This is for race free forks */
void gdm_sigchld_block_push (void);
void gdm_sigchld_block_pop (void);
void gdm_sigterm_block_push (void);
void gdm_sigterm_block_pop (void);
void gdm_sigusr2_block_push (void);
void gdm_sigusr2_block_pop (void);
void ve_clearenv (void);
G_END_DECLS
#endif /* _GDM_COMMON_UNKNOWN_H */
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