Files
sudo/compat.h
1999-05-17 01:36:30 +00:00

130 lines
3.1 KiB
C

/*
* CU sudo version 1.6
* Copyright (c) 1996, 1998, 1999 Todd C. Miller <Todd.Miller@courtesan.com>
*
* This program 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 1, or (at your option)
* any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Please send bugs, changes, problems to sudo-bugs@courtesan.com
*
* $Sudo$
*/
#ifndef _SUDO_COMPAT_H
#define _SUDO_COMPAT_H
/*
* Macros that may be missing on some Operating Systems
*/
/* Deal with ansi stuff reasonably. */
#ifndef __P
# if defined (__cplusplus) || defined (__STDC__)
# define __P(args) args
# else
# define __P(args) ()
# endif
#endif /* __P */
/*
* Some systems (ie ISC V/386) do not define MAXPATHLEN even in param.h
*/
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif
/*
* Some systems do not define MAXHOSTNAMELEN.
*/
#ifndef MAXHOSTNAMELEN
# define MAXHOSTNAMELEN 64
#endif
/*
* 4.2BSD lacks FD_* macros (we only use FD_SET and FD_ZERO)
*/
#ifndef FD_SETSIZE
#define FD_SET(fd, fds) ((fds) -> fds_bits[0] |= (1 << (fd)))
#define FD_ZERO(fds) ((fds) -> fds_bits[0] = 0)
#endif /* !FD_SETSIZE */
/*
* Posix versions for those without...
*/
#ifndef _S_IFMT
# define _S_IFMT S_IFMT
#endif /* _S_IFMT */
#ifndef _S_IFREG
# define _S_IFREG S_IFREG
#endif /* _S_IFREG */
#ifndef _S_IFDIR
# define _S_IFDIR S_IFDIR
#endif /* _S_IFDIR */
#ifndef S_ISREG
# define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
#endif /* S_ISREG */
#ifndef S_ISDIR
# define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
#endif /* S_ISDIR */
/*
* Some OS's may not have this.
*/
#ifndef S_IRWXU
# define S_IRWXU 0000700 /* rwx for owner */
#endif /* S_IRWXU */
/*
* In case this is not defined in <sys/types.h> or <sys/select.h>
*/
#ifndef howmany
#define howmany(x, y) (((x) + ((y) - 1)) / (y))
#endif
/*
* These should be defined in <unistd.h> but not everyone has them.
*/
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
#endif
#ifndef STDOUT_FILENO
# define STDOUT_FILENO 1
#endif
#ifndef STDERR_FILENO
# define STDERR_FILENO 2
#endif
/*
* Emulate seteuid() for AIX via setuidx() -- needed for some versions of AIX
*/
#ifdef _AIX
# include <sys/id.h>
# define seteuid(_EUID) (setuidx(ID_EFFECTIVE|ID_REAL, _EUID))
# undef HAVE_SETEUID
# define HAVE_SETEUID 1
#endif /* _AIX */
/*
* Emulate seteuid() for HP-UX via setresuid(2) and seteuid(2) for others.
*/
#ifndef HAVE_SETEUID
# ifdef __hpux
# define seteuid(_EUID) (setresuid((uid_t) -1, _EUID, (uid_t) -1))
# else
# define seteuid(_EUID) (setreuid((uid_t) -1, _EUID))
# endif /* __hpux */
#endif /* HAVE_SETEUID */
#endif /* _SUDO_COMPAT_H */