Annotation of src/usr.bin/sudo/compat.h, Revision 1.7
1.1 millert 1: /*
1.5 millert 2: * Copyright (c) 1996, 1998-2003 Todd C. Miller <Todd.Miller@courtesan.com>
1.1 millert 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: *
1.7 ! millert 34: * Sponsored in part by the Defense Advanced Research Projects
! 35: * Agency (DARPA) and Air Force Research Laboratory, Air Force
! 36: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
! 37: *
! 38: * $Sudo: compat.h,v 1.67 2003/04/16 00:42:09 millert Exp $
1.1 millert 39: */
40:
41: #ifndef _SUDO_COMPAT_H
42: #define _SUDO_COMPAT_H
43:
44: /*
45: * Macros that may be missing on some Operating Systems
46: */
47:
48: /* Deal with ANSI stuff reasonably. */
49: #ifndef __P
50: # if defined (__cplusplus) || defined (__STDC__)
51: # define __P(args) args
52: # else
53: # define __P(args) ()
54: # endif
55: #endif /* __P */
56:
57: /*
58: * Some systems (ie ISC V/386) do not define MAXPATHLEN even in param.h
59: */
60: #ifndef MAXPATHLEN
61: # define MAXPATHLEN 1024
62: #endif
63:
64: /*
65: * Some systems do not define MAXHOSTNAMELEN.
66: */
67: #ifndef MAXHOSTNAMELEN
68: # define MAXHOSTNAMELEN 64
69: #endif
70:
71: /*
72: * 4.2BSD lacks FD_* macros (we only use FD_SET and FD_ZERO)
73: */
74: #ifndef FD_SETSIZE
75: # define FD_SET(fd, fds) ((fds) -> fds_bits[0] |= (1 << (fd)))
76: # define FD_ZERO(fds) ((fds) -> fds_bits[0] = 0)
77: #endif /* !FD_SETSIZE */
78:
79: /*
80: * Posix versions for those without...
81: */
82: #ifndef _S_IFMT
83: # define _S_IFMT S_IFMT
84: #endif /* _S_IFMT */
85: #ifndef _S_IFREG
86: # define _S_IFREG S_IFREG
87: #endif /* _S_IFREG */
88: #ifndef _S_IFDIR
89: # define _S_IFDIR S_IFDIR
90: #endif /* _S_IFDIR */
91: #ifndef _S_IFLNK
92: # define _S_IFLNK S_IFLNK
93: #endif /* _S_IFLNK */
94: #ifndef S_ISREG
95: # define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
96: #endif /* S_ISREG */
97: #ifndef S_ISDIR
98: # define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
99: #endif /* S_ISDIR */
100:
101: /*
102: * Some OS's may not have this.
103: */
104: #ifndef S_IRWXU
105: # define S_IRWXU 0000700 /* rwx for owner */
106: #endif /* S_IRWXU */
107:
108: /*
109: * In case this is not defined in <sys/types.h> or <sys/select.h>
110: */
111: #ifndef howmany
112: # define howmany(x, y) (((x) + ((y) - 1)) / (y))
113: #endif
114:
115: /*
116: * These should be defined in <unistd.h> but not everyone has them.
117: */
118: #ifndef STDIN_FILENO
119: # define STDIN_FILENO 0
120: #endif
121: #ifndef STDOUT_FILENO
122: # define STDOUT_FILENO 1
123: #endif
124: #ifndef STDERR_FILENO
125: # define STDERR_FILENO 2
126: #endif
127:
128: /*
129: * These should be defined in <unistd.h> but not everyone has them.
130: */
131: #ifndef SEEK_SET
132: # define SEEK_SET 0
133: #endif
134: #ifndef SEEK_CUR
135: # define SEEK_CUR 1
136: #endif
137: #ifndef SEEK_END
138: # define SEEK_END 2
139: #endif
140:
141: /*
142: * BSD defines these in <sys/param.h> but others may not.
143: */
144: #ifndef MIN
145: # define MIN(a,b) (((a)<(b))?(a):(b))
146: #endif
147: #ifndef MAX
148: # define MAX(a,b) (((a)>(b))?(a):(b))
149: #endif
150:
151: /*
1.2 millert 152: * Simple isblank() macro for systems without it.
153: */
154: #ifndef HAVE_ISBLANK
155: # define isblank(_x) ((_x) == ' ' || (_x) == '\t')
156: #endif
157:
158: /*
159: * Old BSD systems lack strchr(), strrchr(), memset() and memcpy()
160: */
161: #if !defined(HAVE_STRCHR) && !defined(strchr)
162: # define strchr(_s, _c) index(_s, _c)
163: #endif
164: #if !defined(HAVE_STRRCHR) && !defined(strrchr)
165: # define strrchr(_s, _c) rindex(_s, _c)
166: #endif
167: #if !defined(HAVE_MEMCPY) && !defined(memcpy)
168: # define memcpy(_d, _s, _n) (bcopy(_s, _d, _n))
169: #endif
170: #if !defined(HAVE_MEMSET) && !defined(memset)
171: # define memset(_s, _x, _n) (bzero(_s, _n))
172: #endif
173:
174: /*
175: * NCR's SVr4 has _innetgr(3) instead of innetgr(3) for some reason.
176: */
177: #ifdef HAVE__INNETGR
178: # define innetgr(n, h, u, d) (_innetgr(n, h, u, d))
179: # define HAVE_INNETGR 1
180: #endif /* HAVE__INNETGR */
1.1 millert 181:
182: /*
183: * On POSIX systems, O_NOCTTY is the default so some OS's may lack this define.
184: */
185: #ifndef O_NOCTTY
186: # define O_NOCTTY 0
187: #endif /* O_NOCTTY */
1.2 millert 188:
189: /*
190: * Emulate POSIX signals via sigvec(2)
191: */
192: #ifndef HAVE_SIGACTION
193: # define SA_ONSTACK SV_ONSTACK
194: # define SA_RESTART SV_INTERRUPT /* opposite effect */
195: # define SA_RESETHAND SV_RESETHAND
196: # define sa_handler sv_handler
197: # define sa_mask sv_mask
198: # define sa_flags sv_flags
199: typedef struct sigvec sigaction_t;
200: typedef int sigset_t;
201: int sigaction __P((int sig, const sigaction_t *act, sigaction_t *oact));
202: int sigemptyset __P((sigset_t *));
203: int sigfillset __P((sigset_t *));
204: int sigaddset __P((sigset_t *, int));
205: int sigdelset __P((sigset_t *, int));
206: int sigismember __P((sigset_t *, int));
207: int sigprocmask __P((int, const sigset_t *, sigset_t *));
208: #endif
209:
210: /*
211: * Extra sugar for POSIX signals to deal with the above emulation
212: * as well as the fact that SunOS has a SA_INTERRUPT flag.
213: */
214: #ifdef HAVE_SIGACTION
215: # ifndef HAVE_SIGACTION_T
216: typedef struct sigaction sigaction_t;
217: # endif
1.7 ! millert 218: # ifndef SA_INTERRUPT
1.2 millert 219: # define SA_INTERRUPT 0
220: # endif
1.7 ! millert 221: # ifndef SA_RESTART
1.2 millert 222: # define SA_RESTART 0
223: # endif
1.4 millert 224: #endif
225:
226: /*
227: * HP-UX 9.x has RLIMIT_* but no RLIM_INFINITY.
228: * Using -1 works because we only check for RLIM_INFINITY and do not set it.
229: */
230: #ifndef RLIM_INFINITY
231: # define RLIM_INFINITY (-1)
1.2 millert 232: #endif
1.6 millert 233:
234: /*
235: * If we lack getprogname(), emulate with __progname if possible.
236: * Otherwise, add a prototype for use with our own getprogname.c.
237: */
238: #ifndef HAVE_GETPROGNAME
239: # ifdef HAVE___PROGNAME
240: extern const char *__progname;
241: # define getprogname() (__progname)
242: # else
243: const char *getprogname __P((void));
244: #endif /* HAVE___PROGNAME */
245: #endif /* !HAVE_GETPROGNAME */
1.1 millert 246:
247: #endif /* _SUDO_COMPAT_H */
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