/* * Copyright (c) 1996, 1998-2002 Todd C. Miller <Todd.Miller@courtesan.com> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * 4. Products derived from this software may not be called "Sudo" nor * may "Sudo" appear in their names without specific prior written * permission from the author. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $Sudo: compat.h,v 1.63 2002/01/25 18:38:22 millert Exp $ */ #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_IFLNK # define _S_IFLNK S_IFLNK #endif /* _S_IFLNK */ #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 /* * These should be defined in <unistd.h> but not everyone has them. */ #ifndef SEEK_SET # define SEEK_SET 0 #endif #ifndef SEEK_CUR # define SEEK_CUR 1 #endif #ifndef SEEK_END # define SEEK_END 2 #endif /* * BSD defines these in <sys/param.h> but others may not. */ #ifndef MIN # define MIN(a,b) (((a)<(b))?(a):(b)) #endif #ifndef MAX # define MAX(a,b) (((a)>(b))?(a):(b)) #endif /* * Simple isblank() macro for systems without it. */ #ifndef HAVE_ISBLANK # define isblank(_x) ((_x) == ' ' || (_x) == '\t') #endif /* * Old BSD systems lack strchr(), strrchr(), memset() and memcpy() */ #if !defined(HAVE_STRCHR) && !defined(strchr) # define strchr(_s, _c) index(_s, _c) #endif #if !defined(HAVE_STRRCHR) && !defined(strrchr) # define strrchr(_s, _c) rindex(_s, _c) #endif #if !defined(HAVE_MEMCPY) && !defined(memcpy) # define memcpy(_d, _s, _n) (bcopy(_s, _d, _n)) #endif #if !defined(HAVE_MEMSET) && !defined(memset) # define memset(_s, _x, _n) (bzero(_s, _n)) #endif /* * Emulate sete[ug]id() via setres[ug]id(2) or setre[ug]id(2) */ #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 */ #ifndef HAVE_SETEGID # ifdef __hpux # define setegid(_EGID) (setresgid((gid_t) -1, _EGID, (gid_t) -1)) # else # define setegid(_EGID) (setregid((gid_t) -1, _EGID)) # endif /* __hpux */ #endif /* HAVE_SETEGID */ /* * Emulate setreuid() for HP-UX via setresuid(2) */ #if !defined(HAVE_SETREUID) && defined(__hpux) # define setreuid(_RUID, _EUID) (setresuid(_RUID, _EUID, (uid_t) -1)) # define HAVE_SETREUID #endif /* !HAVE_SETEUID && __hpux */ /* * NCR's SVr4 has _innetgr(3) instead of innetgr(3) for some reason. */ #ifdef HAVE__INNETGR # define innetgr(n, h, u, d) (_innetgr(n, h, u, d)) # define HAVE_INNETGR 1 #endif /* HAVE__INNETGR */ /* * On POSIX systems, O_NOCTTY is the default so some OS's may lack this define. */ #ifndef O_NOCTTY # define O_NOCTTY 0 #endif /* O_NOCTTY */ /* * Emulate POSIX signals via sigvec(2) */ #ifndef HAVE_SIGACTION # define SA_ONSTACK SV_ONSTACK # define SA_RESTART SV_INTERRUPT /* opposite effect */ # define SA_RESETHAND SV_RESETHAND # define sa_handler sv_handler # define sa_mask sv_mask # define sa_flags sv_flags typedef struct sigvec sigaction_t; typedef int sigset_t; int sigaction __P((int sig, const sigaction_t *act, sigaction_t *oact)); int sigemptyset __P((sigset_t *)); int sigfillset __P((sigset_t *)); int sigaddset __P((sigset_t *, int)); int sigdelset __P((sigset_t *, int)); int sigismember __P((sigset_t *, int)); int sigprocmask __P((int, const sigset_t *, sigset_t *)); #endif /* * Extra sugar for POSIX signals to deal with the above emulation * as well as the fact that SunOS has a SA_INTERRUPT flag. */ #ifdef HAVE_SIGACTION # ifndef HAVE_SIGACTION_T typedef struct sigaction sigaction_t; # endif # ifndef SA_INTERRUPT # define SA_INTERRUPT 0 # endif # ifndef SA_RESTART # define SA_RESTART 0 # endif #endif /* * HP-UX 9.x has RLIMIT_* but no RLIM_INFINITY. * Using -1 works because we only check for RLIM_INFINITY and do not set it. */ #ifndef RLIM_INFINITY # define RLIM_INFINITY (-1) #endif #endif /* _SUDO_COMPAT_H */