1 /* Dirty system-dependent hacks.
2 Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
4 This file is part of GNU Wget.
6 GNU Wget is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or (at
9 your option) any later version.
11 GNU Wget is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Wget; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 In addition, as a special exception, the Free Software Foundation
21 gives permission to link the code of its release of Wget with the
22 OpenSSL project's "OpenSSL" library (or with modified versions of it
23 that use the same license as the "OpenSSL" library), and distribute
24 the linked executables. You must obey the GNU General Public License
25 in all respects for all of the code used other than "OpenSSL". If you
26 modify this file, you may extend this exception to your version of the
27 file, but you are not obligated to do so. If you do not wish to do
28 so, delete this exception statement from your version. */
30 /* This file is included by wget.h. Random .c files need not include
36 /* We need these to be playing with various stuff. */
37 #ifdef TIME_WITH_SYS_TIME
38 # include <sys/time.h>
40 #else /* not TIME_WITH_SYS_TIME_H */
41 #ifdef HAVE_SYS_TIME_H
42 # include <sys/time.h>
43 #else /* not HAVE_SYS_TIME_H */
45 #endif /* HAVE_SYS_TIME_H */
46 #endif /* TIME_WITH_SYS_TIME_H */
48 #include <sys/types.h>
52 /* Windows doesn't have some functions. Include mswindows.h so we get
53 their declarations, as well as some additional declarations and
54 macros. This must come first, so it can set things up. */
55 #include <mswindows.h>
58 /* Watcom-specific stuff. In practice this is probably specific to
59 Windows, although Watcom exists under other OS's too. For that
60 reason, we keep this here. */
63 /* Watcom has its own alloca() defined in malloc.h malloc.h needs to
64 be included in the sources to prevent 'undefined external' errors
67 /* io.h defines unlink() and chmod(). We put this here because it's
68 way too obscure to require all the .c files to observe. */
70 #endif /* __WATCOMC__ */
72 /* Needed for compilation under OS/2: */
82 /* Reportedly, stat() macros are broken on some old systems. Those
83 systems will have to fend for themselves, as I will not introduce
84 new code to handle it.
86 However, I will add code for *missing* macros, and the following
87 are missing from many systems. */
89 # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
92 # define S_ISDIR(m) (((m) & (_S_IFMT)) == (_S_IFDIR))
95 # define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
98 /* Bletch! SPARC compiler doesn't define sparc (needed by
99 arpa/nameser.h) when in -Xc mode. Luckily, it always defines
110 # define READ(fd, buf, cnt) recv((fd), (buf), (cnt), 0)
111 # define WRITE(fd, buf, cnt) send((fd), (buf), (cnt), 0)
114 /* mswindows.h defines these. */
116 # define READ(fd, buf, cnt) read ((fd), (buf), (cnt))
119 # define WRITE(fd, buf, cnt) write ((fd), (buf), (cnt))
122 # define REALCLOSE(x) close (x)
128 DEBUGP (("Closing fd %d\n", x)); \
131 /* Define a large ("very long") type useful for storing large
132 non-negative quantities that exceed sizes of normal download, such
133 as the *total* number of bytes downloaded. To fit today's needs,
134 this needs to be an integral type at least 64 bits wide. On the
135 machines where `long' is 64-bit, we use long. Otherwise, we check
136 whether `long long' is available and if yes, use that. If long
137 long is unavailable, we give up and just use `long'.
139 This check could be smarter and moved to configure, which could
140 check for a bunch of non-standard types such as uint64_t. But I
141 don't see the need for it -- the current test will work on all
142 modern architectures, and if it fails, nothing bad happens, we just
145 Note: you cannot use VERY_LONG_TYPE along with printf(). When you
146 need to print it, use very_long_to_string(). */
148 #if (SIZEOF_LONG >= 8) || !defined(HAVE_LONG_LONG)
149 /* either long is "big enough", or long long is unavailable which
150 leaves long as the only choice. */
151 # define VERY_LONG_TYPE unsigned long
152 #else /* use long long */
153 /* long is smaller than 8 bytes, but long long is available. */
154 # define VERY_LONG_TYPE unsigned long long
155 #endif /* use long long */
157 /* Defined in cmpt.c: */
158 #ifndef HAVE_STRERROR
161 #ifndef HAVE_STRCASECMP
164 #ifndef HAVE_STRNCASECMP
170 #ifndef HAVE_STRPTIME
173 #ifndef HAVE_VSNPRINTF
183 /* SunOS brain damage -- for some reason, SunOS header files fail to
184 declare the functions below, which causes all kinds of problems
185 (compiling errors) with pointer arithmetic and similar.
187 This used to be only within `#ifdef STDC_HEADERS', but it got
188 tripped on other systems (AIX), thus causing havoc. Fortunately,
189 SunOS appears to be the only system braindamaged that badly, so I
190 added an extra `#ifdef sun' guard. */
200 #endif /* not __cplusplus */
202 #endif /* STDC_HEADERS */
204 /* Some systems (Linux libc5, "NCR MP-RAS 3.0", and others) don't
205 provide MAP_FAILED, a symbolic constant for the value returned by
206 mmap() when it doesn't work. Usually, this constant should be -1.
207 This only makes sense for files that use mmap() and include
208 sys/mman.h *before* sysdep.h, but doesn't hurt others. */
211 # define MAP_FAILED ((void *) -1)
214 #endif /* SYSDEP_H */