Replace #ifdef HAVE_UNISTD_H checks with #ifdef G_OS_UNIX

In Windows development environments that have it, <unistd.h> is mostly
just a wrapper around several other native headers (in particular,
<io.h>, which contains read(), close(), etc, and <process.h>, which
contains getpid()). But given that some Windows dev environments don't
have <unistd.h>, everything that uses those functions on Windows
already needed to include the correct Windows header as well, and so
there is never any point to including <unistd.h> on Windows.

Also, remove some <unistd.h> includes (and a few others) that were
unnecessary even on unix.

https://bugzilla.gnome.org/show_bug.cgi?id=710519

config.h.win32.in

@@ -630,13 +630,6 @@
 /* Define to 1 if you have the `timegm' function. */
 /* #undef HAVE_TIMEGM */
 
-/* Define to 1 if you have the <unistd.h> header file. */
-#ifndef _MSC_VER
-#define HAVE_UNISTD_H 1
-#else /* _MSC_VER */
-/* #undef HAVE_UNISTD_H */
-#endif /* _MSC_VER */
-
 /* Define if your printf function family supports positional parameters as
    specified by Unix98. */
 /* #undef HAVE_UNIX98_PRINTF */

configure.ac

@@ -779,7 +779,7 @@ AC_CHECK_HEADERS([mntent.h sys/mnttab.h sys/vfstab.h sys/mntctl.h fstab.h])
 AC_CHECK_HEADERS([linux/magic.h sys/prctl.h])
 
 # Some versions of MSC lack these
-AC_CHECK_HEADERS([dirent.h sys/time.h unistd.h])
+AC_CHECK_HEADERS([dirent.h sys/time.h])
 
 # We don't care about this, but we need to keep including it in
 # glibconfig.h for backward compatibility
@@ -799,7 +799,9 @@ AC_CHECK_HEADERS([xlocale.h])
 AC_CHECK_MEMBERS([struct stat.st_mtimensec, struct stat.st_mtim.tv_nsec, struct stat.st_atimensec, struct stat.st_atim.tv_nsec, struct stat.st_ctimensec, struct stat.st_ctim.tv_nsec])
 AC_CHECK_MEMBERS([struct stat.st_blksize, struct stat.st_blocks, struct statfs.f_fstypename, struct statfs.f_bavail],,, [#include <sys/types.h>
 #include <sys/stat.h>
+#ifdef G_OS_UNIX
 #include <unistd.h>
+#endif
 #ifdef HAVE_SYS_STATFS_H
 #include <sys/statfs.h>
 #endif
@@ -922,9 +924,6 @@ AS_IF([test $ac_cv_sizeof_ssize_t = $ac_cv_sizeof_int &&
 #ifdef HAVE_STDINT_H
 # include <stdint.h>
 #endif
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
 #include <sys/types.h>
 int main ()
 {
@@ -944,9 +943,6 @@ int main ()
 #ifdef HAVE_STDINT_H
 # include <stdint.h>
 #endif
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
 #include <sys/types.h>
 int main ()
 {

gio/gdbusauthmechanismexternal.c

@@ -23,10 +23,6 @@
 #include "config.h"
 
 #include <string.h>
-#include <sys/types.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
 #include "gdbusauthmechanismexternal.h"
 #include "gcredentials.h"

gio/gdbusauthmechanismsha1.c

@@ -26,10 +26,10 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <sys/types.h>
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
-#ifdef _WIN32
+#ifdef G_OS_WIN32
 #include <io.h>
 #endif
 

gio/gdbusconnection.c

@@ -105,10 +105,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <sys/types.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
 #include "gdbusauth.h"
 #include "gdbusutils.h"

gio/gdbusmessage.c

@@ -29,9 +29,6 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
 #if MAJOR_IN_MKDEV
 #include <sys/mkdev.h>

gio/gdbusprivate.c

@@ -24,9 +24,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
 #include "giotypes.h"
 #include "gsocket.h"

gio/gdbusserver.c

@@ -25,10 +25,10 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
-#ifdef _WIN32
+#ifdef G_OS_WIN32
 #include <io.h>
 #endif
 

gio/gdummyfile.c

@@ -27,9 +27,6 @@
 #include <string.h>
 #include <errno.h>
 #include <fcntl.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <stdlib.h>
 
 #include "gdummyfile.h"

gio/glib-compile-resources.c

@@ -30,6 +30,9 @@
 #include <stdio.h>
 #include <locale.h>
 #include <errno.h>
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
 #ifdef G_OS_WIN32
 #include <io.h>
 #endif
@@ -38,10 +41,6 @@
 #include <gio/gzlibcompressor.h>
 #include <gio/gconverteroutputstream.h>
 
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
 #include <glib.h>
 #include "gvdb/gvdb-builder.h"
 

gio/glib-compile-schemas.c

@@ -29,10 +29,6 @@
 #include <stdio.h>
 #include <locale.h>
 
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
 #include "gvdb/gvdb-builder.h"
 #include "strinfo.c"
 

gio/glocalfile.c

@@ -29,8 +29,6 @@
 #include <fcntl.h>
 #if G_OS_UNIX
 #include <dirent.h>
-#endif
-#ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 

gio/glocalfileinfo.c

@@ -32,9 +32,6 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <fcntl.h>
 #include <errno.h>
 #ifdef G_OS_UNIX
@@ -62,11 +59,11 @@
 #include <gfileinfo-priv.h>
 #include <gvfs.h>
 
-#ifndef G_OS_WIN32
+#ifdef G_OS_UNIX
+#include <unistd.h>
 #include "glib-unix.h"
 #include "glib-private.h"
 #endif
-#include "glibintl.h"
 
 #include "thumbnail-verify.h"
 
@@ -97,6 +94,7 @@
 #include "gioerror.h"
 #include "gthemedicon.h"
 #include "gcontenttypeprivate.h"
+#include "glibintl.h"
 
 
 struct ThumbMD5Context {

gio/glocalfileinputstream.c

@@ -25,9 +25,6 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <errno.h>
 
 #include <glib.h>
@@ -39,6 +36,7 @@
 #include "glibintl.h"
 
 #ifdef G_OS_UNIX
+#include <unistd.h>
 #include "glib-unix.h"
 #include "gfiledescriptorbased.h"
 #endif

gio/glocalfileoutputstream.c

@@ -25,9 +25,6 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <errno.h>
 #include <string.h>
 
@@ -41,6 +38,7 @@
 #include "glocalfileinfo.h"
 
 #ifdef G_OS_UNIX
+#include <unistd.h>
 #include "gfiledescriptorbased.h"
 #endif
 

gio/gsimpleasyncresult.c

@@ -22,14 +22,7 @@
 
 #include "config.h"
 
-#include <sys/types.h>
-#include <sys/stat.h>
 #include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
 #include "gsimpleasyncresult.h"
 #include "gasyncresult.h"

gio/gtestdbus.c

@@ -27,7 +27,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <gstdio.h>
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
 #ifdef G_OS_WIN32

glib/gbookmarkfile.c

@@ -29,11 +29,6 @@
 #include <locale.h>
 #include <time.h>
 #include <stdarg.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
 #include "gconvert.h"
 #include "gdataset.h"

glib/gdatetime.c

@@ -50,10 +50,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
 #ifdef HAVE_LANGINFO_TIME
 #include <langinfo.h>
 #endif

glib/genviron.c

@@ -30,9 +30,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #ifdef HAVE_CRT_EXTERNS_H
 #include <crt_externs.h> /* for _NSGetEnviron */
 #endif

glib/gfileutils.c

@@ -22,9 +22,6 @@
 #include "glibconfig.h"
 
 #include <sys/stat.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
@@ -35,6 +32,9 @@
 #include <fcntl.h>
 #include <stdlib.h>
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
 #ifdef G_OS_WIN32
 #include <windows.h>
 #include <io.h>

glib/giochannel.c

@@ -36,10 +36,6 @@
 #include <string.h>
 #include <errno.h>
 
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
 #include "giochannel.h"
 
 #include "gstrfuncs.h"

glib/gkeyfile.c

@@ -36,7 +36,7 @@
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
 #ifdef G_OS_WIN32

glib/gmain.c

@@ -62,9 +62,9 @@
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif /* HAVE_SYS_TIME_H */
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
-#endif /* HAVE_UNISTD_H */
+#endif /* G_OS_UNIX */
 #include <errno.h>
 #include <string.h>
 

glib/gmappedfile.c

@@ -25,15 +25,16 @@
 #include <sys/types.h> 
 #include <sys/stat.h> 
 #include <fcntl.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #ifdef HAVE_MMAP
 #include <sys/mman.h>
 #endif
 
 #include "glibconfig.h"
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
+
 #ifdef G_OS_WIN32
 #include <windows.h>
 #include <io.h>

glib/gmessages.c

@@ -52,9 +52,6 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <signal.h>
 #include <locale.h>
 #include <errno.h>
@@ -74,6 +71,10 @@
 #include "gstring.h"
 #include "gpattern.h"
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
+
 #ifdef G_OS_WIN32
 #include <process.h>		/* For getpid() */
 #include <io.h>

glib/gpoll.c

@@ -66,9 +66,9 @@
 #endif
 
 #endif /* GLIB_HAVE_SYS_POLL_H */
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
-#endif /* HAVE_UNISTD_H */
+#endif /* G_OS_UNIX */
 #include <errno.h>
 
 #ifdef G_OS_WIN32

glib/grand.c

@@ -44,10 +44,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <sys/types.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
 #include "grand.h"
 
 #include "genviron.h"
@@ -56,6 +52,10 @@
 #include "gtestutils.h"
 #include "gthread.h"
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
+
 #ifdef G_OS_WIN32
 #include <stdlib.h>
 #endif

glib/gscanner.c

@@ -38,9 +38,6 @@
 #include <stdarg.h>
 #include <string.h>
 #include <stdio.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 
 #include "gscanner.h"
 
@@ -49,8 +46,11 @@
 #include "gstring.h"
 #include "gtestutils.h"
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
 #ifdef G_OS_WIN32
-#include <io.h> /* For _read() */
+#include <io.h>
 #endif
 
 

glib/gslice.c

@@ -32,7 +32,7 @@
 #include <string.h>
 #include <errno.h>
 
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>             /* sysconf() */
 #endif
 #ifdef G_OS_WIN32

glib/gstdio.c

@@ -27,7 +27,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
 

glib/gstring.c

@@ -30,9 +30,6 @@
 
 #include "config.h"
 
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>

glib/gtestutils.c

@@ -29,14 +29,12 @@
 #include <sys/wait.h>
 #include <sys/time.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <glib/gstdio.h>
 #endif
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #ifdef HAVE_SYS_RESOURCE_H
 #include <sys/resource.h>
 #endif

glib/gthread.c

@@ -45,7 +45,7 @@
 
 #include <string.h>
 
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
 
@@ -1039,7 +1039,7 @@ g_get_num_processors (void)
       if (count > 0)
         return count;
     }
-#elif defined(HAVE_UNISTD_H) && defined(_SC_NPROCESSORS_ONLN)
+#elif defined(_SC_NPROCESSORS_ONLN)
   {
     int count;
 

glib/gtimer.c

@@ -33,9 +33,9 @@
 
 #include <stdlib.h>
 
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
-#endif /* HAVE_UNISTD_H */
+#endif /* G_OS_UNIX */
 
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>

glib/gutils.c

@@ -31,9 +31,6 @@
 #include "config.h"
 #include "glibconfig.h"
 
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -45,6 +42,7 @@
 #include <sys/stat.h>
 #ifdef G_OS_UNIX
 #include <pwd.h>
+#include <unistd.h>
 #endif
 #include <sys/types.h>
 #ifdef HAVE_SYS_PARAM_H

glib/tests/base64.c

@@ -1,8 +1,5 @@
 #include <glib.h>
 #include <string.h>
-#ifdef G_OS_UNIX
-#include <unistd.h>
-#endif
 #include <stdlib.h>
 
 #define DATA_SIZE 1024

glib/tests/checksum.c

@@ -1,8 +1,5 @@
 #include <glib.h>
 #include <string.h>
-#ifdef G_OS_UNIX
-#include <unistd.h>
-#endif
 #include <stdlib.h>
 
 /* Test GChecksum by computing the checksums of every initial

glib/tests/hmac.c

@@ -1,8 +1,5 @@
 #include <glib.h>
 #include <string.h>
-#ifdef G_OS_UNIX
-#include <unistd.h>
-#endif
 #include <stdlib.h>
 
 /* HMAC-MD5 test vectors as per RFC 2202 */

glib/tests/mappedfile.c

@@ -2,14 +2,18 @@
 
 #include <glib.h>
 #include <string.h>
-#ifdef G_OS_UNIX
-#include <unistd.h>
-#endif
 #include <glib/gstdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <fcntl.h>
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
+#ifdef G_OS_WIN32
+#include <io.h>
+#endif
+
 static void
 test_basic (void)
 {

glib/tests/node.c

@@ -33,10 +33,6 @@
 
 #include "glib.h"
 
-#ifdef G_OS_UNIX
-#include <unistd.h>
-#endif
-
 #define C2P(c)          ((gpointer) ((long) (c)))
 #define P2C(p)          ((gchar) ((long) (p)))
 

glib/tests/thread.c

@@ -32,7 +32,7 @@
 
 #include <glib.h>
 
-#ifndef G_OS_WIN32
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #include <sys/resource.h>
 #endif

gmodule/gmodule.c

@@ -38,7 +38,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-#ifdef HAVE_UNISTD_H
+#ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
 #ifdef G_OS_WIN32

gobject/glib-genmarshal.c

@@ -23,9 +23,6 @@
 #include <fcntl.h>
 #include <string.h>
 #include <errno.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ -36,6 +33,9 @@
 #include <glib.h>
 #include <glib/gprintf.h>
 
+#ifdef G_OS_UNIX
+#include <unistd.h>
+#endif
 #ifdef G_OS_WIN32
 #include <io.h>
 #endif

gobject/gobject-query.c

@@ -21,9 +21,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
 #include <sys/stat.h>
 #include <fcntl.h>
 

tests/env-test.c

@@ -37,10 +37,6 @@
 
 #include <glib.h>
 
-#ifdef G_OS_UNIX
-#include <unistd.h>
-#endif
-
 int 
 main (int argc, char *argv[])
 {

tests/file-test.c

@@ -37,12 +37,11 @@
 
 #include <gstdio.h>
 
+#include <fcntl.h>		/* For open() */
+
 #ifdef G_OS_UNIX
 #include <unistd.h>
 #endif
-
-#include <fcntl.h>		/* For open() */
-
 #ifdef G_OS_WIN32
 #include <io.h>			/* For read(), write() etc */
 #endif

tests/gio-test.c

@@ -40,10 +40,10 @@
   #define STRICT
   #include <windows.h>
   #define pipe(fds) _pipe(fds, 4096, _O_BINARY)
-#else
+#endif
-  #ifdef HAVE_UNISTD_H
+
-    #include <unistd.h>
+#ifdef G_OS_UNIX
-  #endif
+  #include <unistd.h>
 #endif
 
 static int nrunning;