249 lines
6.4 KiB
C
249 lines
6.4 KiB
C
/*
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* Copyright (c) 1996, 1998-2000 Todd C. Miller <Todd.Miller@courtesan.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* 4. Products derived from this software may not be called "Sudo" nor
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* may "Sudo" appear in their names without specific prior written
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* permission from the author.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Sudo$
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*/
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#ifndef _SUDO_COMPAT_H
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#define _SUDO_COMPAT_H
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/*
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* Macros that may be missing on some Operating Systems
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*/
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/* Deal with ANSI stuff reasonably. */
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#ifndef __P
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# if defined (__cplusplus) || defined (__STDC__)
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# define __P(args) args
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# else
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# define __P(args) ()
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# endif
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#endif /* __P */
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/*
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* Some systems (ie ISC V/386) do not define MAXPATHLEN even in param.h
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*/
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#ifndef MAXPATHLEN
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# define MAXPATHLEN 1024
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#endif
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/*
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* Some systems do not define MAXHOSTNAMELEN.
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*/
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#ifndef MAXHOSTNAMELEN
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# define MAXHOSTNAMELEN 64
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#endif
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/*
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* 4.2BSD lacks FD_* macros (we only use FD_SET and FD_ZERO)
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*/
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#ifndef FD_SETSIZE
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# define FD_SET(fd, fds) ((fds) -> fds_bits[0] |= (1 << (fd)))
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# define FD_ZERO(fds) ((fds) -> fds_bits[0] = 0)
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#endif /* !FD_SETSIZE */
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/*
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* Posix versions for those without...
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*/
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#ifndef _S_IFMT
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# define _S_IFMT S_IFMT
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#endif /* _S_IFMT */
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#ifndef _S_IFREG
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# define _S_IFREG S_IFREG
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#endif /* _S_IFREG */
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#ifndef _S_IFDIR
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# define _S_IFDIR S_IFDIR
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#endif /* _S_IFDIR */
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#ifndef _S_IFLNK
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# define _S_IFLNK S_IFLNK
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#endif /* _S_IFLNK */
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#ifndef S_ISREG
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# define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
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#endif /* S_ISREG */
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#ifndef S_ISDIR
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# define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
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#endif /* S_ISDIR */
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/*
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* Some OS's may not have this.
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*/
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#ifndef S_IRWXU
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# define S_IRWXU 0000700 /* rwx for owner */
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#endif /* S_IRWXU */
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/*
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* In case this is not defined in <sys/types.h> or <sys/select.h>
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*/
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#ifndef howmany
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# define howmany(x, y) (((x) + ((y) - 1)) / (y))
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#endif
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/*
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* These should be defined in <unistd.h> but not everyone has them.
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*/
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#ifndef STDIN_FILENO
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# define STDIN_FILENO 0
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#endif
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#ifndef STDOUT_FILENO
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# define STDOUT_FILENO 1
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#endif
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#ifndef STDERR_FILENO
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# define STDERR_FILENO 2
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#endif
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/*
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* These should be defined in <unistd.h> but not everyone has them.
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*/
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#ifndef SEEK_SET
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# define SEEK_SET 0
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#endif
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#ifndef SEEK_CUR
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# define SEEK_CUR 1
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#endif
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#ifndef SEEK_END
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# define SEEK_END 2
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#endif
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/*
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* BSD defines these in <sys/param.h> but others may not.
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*/
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#ifndef MIN
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# define MIN(a,b) (((a)<(b))?(a):(b))
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#endif
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#ifndef MAX
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# define MAX(a,b) (((a)>(b))?(a):(b))
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#endif
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/*
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* Simple isblank() macro for systems without it.
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*/
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#ifndef HAVE_ISBLANK
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# define isblank(_x) ((_x) == ' ' || (_x) == '\t')
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#endif
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/*
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* Old BSD systems lack strchr(), strrchr(), memset() and memcpy()
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*/
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#if !defined(HAVE_STRCHR) && !defined(strchr)
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# define strchr(_s, _c) index(_s, _c)
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#endif
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#if !defined(HAVE_STRRCHR) && !defined(strrchr)
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# define strrchr(_s, _c) rindex(_s, _c)
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#endif
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#if !defined(HAVE_MEMCPY) && !defined(memcpy)
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# define memcpy(_d, _s, _n) (bcopy(_s, _d, _n))
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#endif
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#if !defined(HAVE_MEMSET) && !defined(memset)
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# define memset(_s, _x, _n) (bzero(_s, _n))
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#endif
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/*
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* Emulate sete[ug]id() via setres[ug]id(2) or setre[ug]id(2)
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*/
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#ifndef HAVE_SETEUID
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# ifdef __hpux
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# define seteuid(_EUID) (setresuid((uid_t) -1, _EUID, (uid_t) -1))
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# else
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# define seteuid(_EUID) (setreuid((uid_t) -1, _EUID))
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# endif /* __hpux */
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#endif /* HAVE_SETEUID */
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#ifndef HAVE_SETEGID
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# ifdef __hpux
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# define setegid(_EGID) (setresgid((gid_t) -1, _EGID, (gid_t) -1))
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# else
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# define setegid(_EGID) (setregid((gid_t) -1, _EGID))
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# endif /* __hpux */
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#endif /* HAVE_SETEGID */
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/*
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* Emulate setreuid() for HP-UX via setresuid(2)
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*/
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#if !defined(HAVE_SETREUID) && defined(__hpux)
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# define setreuid(_RUID, _EUID) (setresuid(_RUID, _EUID, (uid_t) -1))
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# define HAVE_SETREUID
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#endif /* !HAVE_SETEUID && __hpux */
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/*
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* NCR's SVr4 has _innetgr(3) instead of innetgr(3) for some reason.
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*/
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#ifdef HAVE__INNETGR
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# define innetgr(n, h, u, d) (_innetgr(n, h, u, d))
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# define HAVE_INNETGR 1
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#endif /* HAVE__INNETGR */
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/*
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* On POSIX systems, O_NOCTTY is the default so some OS's may lack this define.
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*/
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#ifndef O_NOCTTY
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# define O_NOCTTY 0
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#endif /* O_NOCTTY */
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/*
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* Emulate POSIX signals via sigvec(2)
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*/
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#ifndef HAVE_SIGACTION
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# define SA_ONSTACK SV_ONSTACK
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# define SA_RESTART SV_INTERRUPT /* opposite effect */
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# define SA_RESETHAND SV_RESETHAND
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# define sa_handler sv_handler
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# define sa_mask sv_mask
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# define sa_flags sv_flags
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typedef struct sigvec sigaction_t;
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typedef int sigset_t;
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int sigaction __P((int sig, const sigaction_t *act, sigaction_t *oact));
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int sigemptyset __P((sigset_t *));
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int sigfillset __P((sigset_t *));
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int sigaddset __P((sigset_t *, int));
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int sigdelset __P((sigset_t *, int));
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int sigismember __P((sigset_t *, int));
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int sigprocmask __P((int, const sigset_t *, sigset_t *));
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#endif
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/*
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* Extra sugar for POSIX signals to deal with the above emulation
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* as well as the fact that SunOS has a SA_INTERRUPT flag.
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*/
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#ifdef HAVE_SIGACTION
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# ifndef HAVE_SIGACTION_T
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typedef struct sigaction sigaction_t;
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# endif
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# ifndef SA_INTERRUPT
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# define SA_INTERRUPT 0
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# endif
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# ifndef SA_RESTART
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# define SA_RESTART 0
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# endif
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#endif
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#endif /* _SUDO_COMPAT_H */
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