From ca059f5bfd498ae64fb81c7446cf7a2c1bca6eed Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Mon, 3 Dec 2001 13:20:30 +0000
Subject: (STAT_BLOCKSIZE): Use HAVE_STRUCT_STAT_ST_BLKSIZE, not
 HAVE_ST_BLKSIZE. (vfork): New macro. (HAVE_FORK): Remove. (set_binary_mode):
 New macro.

---
 src/system.h | 43 +++++++++++++++++++++++++++++--------------
 1 file changed, 29 insertions(+), 14 deletions(-)

(limited to 'src/system.h')

diff --git a/src/system.h b/src/system.h
index d7eddde..bd6c193 100644
--- a/src/system.h
+++ b/src/system.h
@@ -172,7 +172,7 @@ void *alloca (size_t);
 #endif
 
 #ifndef STAT_BLOCKSIZE
-# if HAVE_ST_BLKSIZE
+# if HAVE_STRUCT_STAT_ST_BLKSIZE
 #  define STAT_BLOCKSIZE(s) ((s).st_blksize)
 # else
 #  define STAT_BLOCKSIZE(s) (8 * 1024)
@@ -196,10 +196,6 @@ void *alloca (size_t);
 # endif
 #endif
 
-#if HAVE_VFORK_H
-# include <vfork.h>
-#endif
-
 #if HAVE_STDLIB_H
 # include <stdlib.h>
 #else
@@ -303,6 +299,14 @@ void *memchr ();
 #else
 # define bool unsigned char
 #endif
+
+#if HAVE_VFORK_H
+# include <vfork.h>
+#endif
+
+#if ! HAVE_WORKING_VFORK
+# define vfork fork
+#endif
 
 /* Type used for fast comparison of several bytes at a time.  */
 
@@ -330,10 +334,6 @@ verify (lin_is_printable_as_long, sizeof (lin) <= sizeof (long));
 # define file_name_lastdirchar(name) strrchr (name, '/')
 #endif
 
-#ifndef HAVE_FORK
-# define HAVE_FORK 1
-#endif
-
 #ifndef HAVE_SETMODE
 # define HAVE_SETMODE 0
 #endif
@@ -349,12 +349,12 @@ verify (lin_is_printable_as_long, sizeof (lin) <= sizeof (long));
 /* Do struct stat *S, *T describe the same special file?  */
 #ifndef same_special_file
 # if HAVE_ST_RDEV && defined S_ISBLK && defined S_ISCHR
-#   define same_special_file(s, t) \
-      (((S_ISBLK ((s)->st_mode) && S_ISBLK ((t)->st_mode)) \
-	|| (S_ISCHR ((s)->st_mode) && S_ISCHR ((t)->st_mode))) \
-       && (s)->st_rdev == (t)->st_rdev)
+#  define same_special_file(s, t) \
+     (((S_ISBLK ((s)->st_mode) && S_ISBLK ((t)->st_mode)) \
+       || (S_ISCHR ((s)->st_mode) && S_ISCHR ((t)->st_mode))) \
+      && (s)->st_rdev == (t)->st_rdev)
 # else
-#   define same_special_file(s, t) 0
+#  define same_special_file(s, t) 0
 # endif
 #endif
 
@@ -400,3 +400,18 @@ verify (lin_is_printable_as_long, sizeof (lin) <= sizeof (long));
     && (s)->st_mtime == (t)->st_mtime \
     && (s)->st_ctime == (t)->st_ctime)
 #endif
+
+
+/* Set the binary mode of FD to MODE, returning its previous mode.
+   MODE is 1 for binary and 0 for text.  If setting the mode might
+   cause problems, ignore the request and return the current mode.
+   Always return 1 on POSIX platforms, which do not distinguish
+   between text and binary.  */
+#ifndef set_binary_mode
+# if HAVE_SETMODE
+#  define set_binary_mode(fd, mode) \
+     (! isatty (fd) && setmode (fd, ((mode) ? O_BINARY : 0)))
+# else
+#  define set_binary_mode(fd, mode) 1
+# endif
+#endif
-- 
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