Annotation of src/usr.bin/sudo/compat.h, Revision 1.1
1.1 ! millert 1: /*
! 2: * Copyright (c) 1996, 1998, 1999 Todd C. Miller <Todd.Miller@courtesan.com>
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: *
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: *
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * 3. The name of the author may not be used to endorse or promote products
! 17: * derived from this software without specific prior written permission.
! 18: *
! 19: * 4. Products derived from this software may not be called "Sudo" nor
! 20: * may "Sudo" appear in their names without specific prior written
! 21: * permission from the author.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! 24: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
! 25: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
! 26: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
! 27: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 28: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 29: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 30: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 31: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 32: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: *
! 34: * $Sudo: compat.h,v 1.54 1999/10/08 01:12:49 millert Exp $
! 35: */
! 36:
! 37: #ifndef _SUDO_COMPAT_H
! 38: #define _SUDO_COMPAT_H
! 39:
! 40: /*
! 41: * Macros that may be missing on some Operating Systems
! 42: */
! 43:
! 44: /* Deal with ANSI stuff reasonably. */
! 45: #ifndef __P
! 46: # if defined (__cplusplus) || defined (__STDC__)
! 47: # define __P(args) args
! 48: # else
! 49: # define __P(args) ()
! 50: # endif
! 51: #endif /* __P */
! 52:
! 53: /*
! 54: * Some systems (ie ISC V/386) do not define MAXPATHLEN even in param.h
! 55: */
! 56: #ifndef MAXPATHLEN
! 57: # define MAXPATHLEN 1024
! 58: #endif
! 59:
! 60: /*
! 61: * Some systems do not define MAXHOSTNAMELEN.
! 62: */
! 63: #ifndef MAXHOSTNAMELEN
! 64: # define MAXHOSTNAMELEN 64
! 65: #endif
! 66:
! 67: /*
! 68: * 4.2BSD lacks FD_* macros (we only use FD_SET and FD_ZERO)
! 69: */
! 70: #ifndef FD_SETSIZE
! 71: # define FD_SET(fd, fds) ((fds) -> fds_bits[0] |= (1 << (fd)))
! 72: # define FD_ZERO(fds) ((fds) -> fds_bits[0] = 0)
! 73: #endif /* !FD_SETSIZE */
! 74:
! 75: /*
! 76: * Posix versions for those without...
! 77: */
! 78: #ifndef _S_IFMT
! 79: # define _S_IFMT S_IFMT
! 80: #endif /* _S_IFMT */
! 81: #ifndef _S_IFREG
! 82: # define _S_IFREG S_IFREG
! 83: #endif /* _S_IFREG */
! 84: #ifndef _S_IFDIR
! 85: # define _S_IFDIR S_IFDIR
! 86: #endif /* _S_IFDIR */
! 87: #ifndef _S_IFLNK
! 88: # define _S_IFLNK S_IFLNK
! 89: #endif /* _S_IFLNK */
! 90: #ifndef S_ISREG
! 91: # define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
! 92: #endif /* S_ISREG */
! 93: #ifndef S_ISDIR
! 94: # define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
! 95: #endif /* S_ISDIR */
! 96:
! 97: /*
! 98: * Some OS's may not have this.
! 99: */
! 100: #ifndef S_IRWXU
! 101: # define S_IRWXU 0000700 /* rwx for owner */
! 102: #endif /* S_IRWXU */
! 103:
! 104: /*
! 105: * In case this is not defined in <sys/types.h> or <sys/select.h>
! 106: */
! 107: #ifndef howmany
! 108: # define howmany(x, y) (((x) + ((y) - 1)) / (y))
! 109: #endif
! 110:
! 111: /*
! 112: * These should be defined in <unistd.h> but not everyone has them.
! 113: */
! 114: #ifndef STDIN_FILENO
! 115: # define STDIN_FILENO 0
! 116: #endif
! 117: #ifndef STDOUT_FILENO
! 118: # define STDOUT_FILENO 1
! 119: #endif
! 120: #ifndef STDERR_FILENO
! 121: # define STDERR_FILENO 2
! 122: #endif
! 123:
! 124: /*
! 125: * These should be defined in <unistd.h> but not everyone has them.
! 126: */
! 127: #ifndef SEEK_SET
! 128: # define SEEK_SET 0
! 129: #endif
! 130: #ifndef SEEK_CUR
! 131: # define SEEK_CUR 1
! 132: #endif
! 133: #ifndef SEEK_END
! 134: # define SEEK_END 2
! 135: #endif
! 136:
! 137: /*
! 138: * BSD defines these in <sys/param.h> but others may not.
! 139: */
! 140: #ifndef MIN
! 141: # define MIN(a,b) (((a)<(b))?(a):(b))
! 142: #endif
! 143: #ifndef MAX
! 144: # define MAX(a,b) (((a)>(b))?(a):(b))
! 145: #endif
! 146:
! 147: /*
! 148: * Emulate seteuid() for HP-UX via setresuid(2) and seteuid(2) for others.
! 149: */
! 150: #ifndef HAVE_SETEUID
! 151: # ifdef __hpux
! 152: # define seteuid(_EUID) (setresuid((uid_t) -1, _EUID, (uid_t) -1))
! 153: # else
! 154: # define seteuid(_EUID) (setreuid((uid_t) -1, _EUID))
! 155: # endif /* __hpux */
! 156: #endif /* HAVE_SETEUID */
! 157:
! 158: /*
! 159: * On POSIX systems, O_NOCTTY is the default so some OS's may lack this define.
! 160: */
! 161: #ifndef O_NOCTTY
! 162: # define O_NOCTTY 0
! 163: #endif /* O_NOCTTY */
! 164:
! 165: #endif /* _SUDO_COMPAT_H */
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