Message-ID: <3884B374.81D9DDF4@softhome.net>
Date: Tue, 18 Jan 2000 20:39:48 +0200
From: Laurynas Biveinis <lauras AT softhome DOT net>
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To: DJGPP Workers <djgpp-workers AT delorie DOT com>
Subject: Patch: fchown()
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Reply-To: djgpp-workers AT delorie DOT com

I've implemented it and updated docs. FSEXT hook
is also included, pleases check if it is correct.

Laurynas Biveinis
-------------
diff -u -r -N djgpp.old/include/libc/stubs.h djgpp/include/libc/stubs.h
--- djgpp.old/include/libc/stubs.h	Mon Sep  8 01:07:18 1997
+++ djgpp/include/libc/stubs.h	Sun Jan  9 15:06:58 2000
@@ -36,6 +36,7 @@
 #define crlf2nl __crlf2nl
 #define dosmemget __dosmemget
 #define dosmemput __dosmemput
+#define fchown __fchown
 #define filelength __filelength
 #define findfirst __findfirst
 #define findnext __findnext
diff -u -r -N djgpp.old/include/sys/fsext.h djgpp/include/sys/fsext.h
--- djgpp.old/include/sys/fsext.h	Mon Jun 29 00:17:44 1998
+++ djgpp/include/sys/fsext.h	Fri Jan 14 13:33:20 2000
@@ -31,7 +31,8 @@
   __FSEXT_dup,
   __FSEXT_dup2,
   __FSEXT_fstat,
-  __FSEXT_stat
+  __FSEXT_stat,
+  __FSEXT_fchown,
 } __FSEXT_Fnumber;
 
 /* _ready gets passed a fd and should return a mask of these,
diff -u -r -N djgpp.old/include/unistd.h djgpp/include/unistd.h
--- djgpp.old/include/unistd.h	Sat Dec 25 00:08:40 1999
+++ djgpp/include/unistd.h	Tue Jan 18 20:19:42 2000
@@ -129,6 +129,7 @@
 int		brk(void *_heaptop);
 char *		dirname(const char *_fn);
 int		__file_exists(const char *_fn);
+int             fchown(int fd, uid_t owner, gid_t group);
 int		fsync(int _fd);
 int		ftruncate(int, off_t);
 int		getdtablesize(void);
diff -u -r -N djgpp.old/src/libc/fsext/fsext.txh djgpp/src/libc/fsext/fsext.txh
--- djgpp.old/src/libc/fsext/fsext.txh	Tue Jan 18 20:07:54 2000
+++ djgpp/src/libc/fsext/fsext.txh	Tue Jan 18 20:08:58 2000
@@ -109,6 +109,11 @@
 A file fstat handler (@pxref{fstat}).  The extension should fill in
 various status information about the emulated file.
 
+@item __FSEXT_fchown
+
+A file fchown handler (@pxref{fchown}). This is called when file
+attributtes are changed for an open file.
+
 @end table
 
 
diff -u -r -N djgpp.old/src/libc/libc.tex djgpp/src/libc/libc.tex
--- djgpp.old/src/libc/libc.tex	Sun Nov 28 13:20:48 1999
+++ djgpp/src/libc/libc.tex	Tue Jan 18 20:32:20 2000
@@ -107,6 +107,7 @@
 * cfsetispeed::              No-op.
 * cfsetospeed::              No-op.
 * chown::                    Trivial.
+* fchown::                   Trivial.
 * fcntl::                    Always fails for all operations except
                              @code{F_DUPFD} and @code{F_GETFD}.
 * fork::                     Always fails.
diff -u -r -N djgpp.old/src/libc/posix/unistd/fchown.c djgpp/src/libc/posix/unistd/fchown.c
--- djgpp.old/src/libc/posix/unistd/fchown.c	Thu Jan  1 00:00:00 1970
+++ djgpp/src/libc/posix/unistd/fchown.c	Tue Jan 18 20:03:44 2000
@@ -0,0 +1,20 @@
+/* Copyright (C) 2000 DJ Delorie, see COPYING.DJ for details */
+/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
+#include <libc/stubs.h>
+#include <sys/fsext.h>
+#include <unistd.h>
+ 
+/* MS-DOS couldn't care less about file ownerships, so we always succeed. */
+ 
+int
+fchown(int fd, uid_t owner, gid_t group)
+{
+  __FSEXT_Function * func = __FSEXT_get_function(fd);
+  if (func)
+  {
+    int rv;
+    if (func(__FSEXT_read, &rv, &handle))
+      return rv;
+  }
+  return 0;
+}
diff -u -r -N djgpp.old/src/libc/posix/unistd/fchown.txh djgpp/src/libc/posix/unistd/fchown.txh
--- djgpp.old/src/libc/posix/unistd/fchown.txh	Thu Jan  1 00:00:00 1970
+++ djgpp/src/libc/posix/unistd/fchown.txh	Tue Jan 18 20:04:48 2000
@@ -0,0 +1,23 @@
+@node fchown, unix
+@subheading Syntax
+
+@example
+#include <unistd.h>
+
+int fchown(int fd, int owner, int group);
+@end example
+
+@subheading Description
+
+This function does nothing under MS-DOS. This function can 
+be hooked by the @xref{File System Extensions}.
+
+@subheading Return Value
+
+This function always returns zero.
+
+
+@subheading Portability
+
+@portability !ansi, !posix
+
diff -u -r -N djgpp.old/src/libc/posix/unistd/makefile djgpp/src/libc/posix/unistd/makefile
--- djgpp.old/src/libc/posix/unistd/makefile	Fri Sep 20 02:40:46 1996
+++ djgpp/src/libc/posix/unistd/makefile	Sun Jan  9 15:04:38 2000
@@ -18,6 +18,7 @@
 SRC += execve.c
 SRC += execvp.c
 SRC += execvpe.c
+SRC += fchown.c
 SRC += fork.c
 SRC += fpathcon.c
 SRC += getcwd.c