301 lines
7.6 KiB
C
301 lines
7.6 KiB
C
/*
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* Copyright (c) 1996, 1998-2005, 2008
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* Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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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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/* Define away __attribute__ for non-gcc or old gcc */
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#if !defined(__GNUC__) || __GNUC__ < 2 || __GNUC__ == 2 && __GNUC_MINOR__ < 5
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# define __attribute__(x)
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#endif
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/* For silencing gcc warnings about rcsids */
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#ifndef __unused
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# if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ > 7)
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# define __unused __attribute__((__unused__))
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# else
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# define __unused
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# endif
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#endif
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/* For catching format string mismatches */
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#ifndef __printflike
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# if defined(__GNUC__) && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 7)
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# define __printflike(f, v) __attribute__((__format__ (__printf__, f, v)))
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# else
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# define __printflike(f, v)
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# endif
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#endif
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/*
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* Some systems lack full limit definitions.
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*/
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#ifndef OPEN_MAX
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# define OPEN_MAX 256
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#endif
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#ifndef INT_MAX
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# define INT_MAX 0x7fffffff
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#endif
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#ifndef PATH_MAX
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# ifdef MAXPATHLEN
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# define PATH_MAX MAXPATHLEN
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# else
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# ifdef _POSIX_PATH_MAX
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# define PATH_MAX _POSIX_PATH_MAX
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# else
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# define PATH_MAX 1024
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# endif
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# endif
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#endif
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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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* 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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* 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 and function for systems without it.
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*/
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#ifndef HAVE_ISBLANK
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int isblank(int);
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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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* 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_NOCLDSTOP SV_NOCLDSTOP
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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(int sig, const sigaction_t *act, sigaction_t *oact);
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int sigemptyset(sigset_t *);
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int sigfillset(sigset_t *);
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int sigaddset(sigset_t *, int);
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int sigdelset(sigset_t *, int);
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int sigismember(sigset_t *, int);
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int sigprocmask(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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/*
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* If dirfd() does not exists, hopefully dd_fd does.
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*/
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#if !defined(HAVE_DIRFD) && defined(HAVE_DD_FD)
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# define dirfd(_d) ((_d)->dd_fd)
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# define HAVE_DIRFD
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#endif
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/*
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* Define futimes() in terms of futimesat() if needed.
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*/
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#if !defined(HAVE_FUTIMES) && defined(HAVE_FUTIMESAT)
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# define futimes(_f, _tv) futimesat(_f, NULL, _tv)
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# define HAVE_FUTIMES
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#endif
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#if !defined(HAVE_KILLPG) && !defined(killpg)
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# define killpg(s) kill(-(s))
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#endif
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/*
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* If we lack getprogname(), emulate with __progname if possible.
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* Otherwise, add a prototype for use with our own getprogname.c.
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*/
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#ifndef HAVE_GETPROGNAME
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# ifdef HAVE___PROGNAME
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extern const char *__progname;
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# define getprogname() (__progname)
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# else
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const char *getprogname(void);
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#endif /* HAVE___PROGNAME */
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#endif /* !HAVE_GETPROGNAME */
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#ifndef timespecclear
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# define timespecclear(ts) (ts)->tv_sec = (ts)->tv_nsec = 0
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#endif
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#ifndef timespecisset
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# define timespecisset(ts) ((ts)->tv_sec || (ts)->tv_nsec)
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#endif
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#ifndef timespecsub
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# define timespecsub(minuend, subrahend, difference) \
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do { \
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(difference)->tv_sec = (minuend)->tv_sec - (subrahend)->tv_sec; \
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(difference)->tv_nsec = (minuend)->tv_nsec - (subrahend)->tv_nsec; \
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if ((difference)->tv_nsec < 0) { \
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(difference)->tv_nsec += 1000000000L; \
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(difference)->tv_sec--; \
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} \
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} while (0)
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#endif
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#ifndef timeradd
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# define timeradd(tv1, tv2, total) \
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do { \
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(total)->tv_sec = (tv1)->tv_sec + (tv2)->tv_sec; \
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(total)->tv_usec = (tv1)->tv_usec + (tv2)->tv_usec; \
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if ((total)->tv_usec >= 1000000) { \
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(total)->tv_sec++; \
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(total)->tv_usec -= 1000000; \
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} \
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} while (0)
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#endif
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#ifndef timersub
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# define timersub(minuend, subrahend, difference) \
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do { \
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(difference)->tv_sec = (minuend)->tv_sec - (subrahend)->tv_sec; \
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(difference)->tv_usec = (minuend)->tv_usec - (subrahend)->tv_usec; \
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if ((difference)->tv_usec < 0) { \
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(difference)->tv_sec--; \
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(difference)->tv_usec += 1000000; \
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} \
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} while (0)
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#endif
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#ifndef WCOREDUMP
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# define WCOREDUMP(x) ((x) & 0x80)
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#endif
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#endif /* _SUDO_COMPAT_H */
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