Update.

1998-10-25  Ulrich Drepper  <drepper@cygnus.com>

	* include/features.h: Define __USE_POSIS199506 is _POSIX_C_SOURCE is
	greater or equal than 199506L.

	* sysdeps/generic/bits/types.h (__fd_set): Define element as fds_bits
	only is __USE_XOPEN.  Otherwise use __fds_bits.
	* sysdeps/unix/sysv/linux/alpha/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/types.h: Likewise.
	* sysdeps/unix/sysv/sysv4/solaris2/bits/types.h: Likewise.

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* locale/programs/charmap.c (parse_charmap): Accept tok_string
	for <code_set_name>.

1998-10-25  H.J. Lu  <hjl@gnu.org>

	* locale/programs/ld-ctype.c (ctype_finish): Also check
	<space>.

1998-10-25  Ulrich Drepper  <drepper@cygnus.com>

	* signal/signal.h: Include bits/sigthread.h only if __USE_POSIX199506.

	* sysdeps/unix/sysv/linux/bits/types.h: Include pthreadtypes.h only
	if __USE_POSIX199506 or __USE_UNIX98.

1998-10-24 22:34 -0400  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	* string/bits/string2.h: Inline strdup+friends only if
	__USE_MISC || __USE_GNU (prevents namespace pollution).

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* sysdeps/unix/sysv/linux/alpha/bits/fcntl.h (LOCK_SH,
	LOCK_EX, LOCK_NB, LOCK_UN): Protect with __USE_BSD.
	* sysdeps/unix/sysv/linux/i386/bits/fcntl.h (LOCK_SH, LOCK_EX,
	LOCK_NB, LOCK_UN): Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/fcntl.h (LOCK_SH, LOCK_EX,
	LOCK_NB, LOCK_UN): Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/fcntl.h (LOCK_SH, LOCK_EX,
	LOCK_NB, LOCK_UN): Likewise.
	* sysdeps/unix/sysv/linux/bits/fcntl.h (LOCK_SH, LOCK_EX,
	LOCK_NB, LOCK_UN): Likewise.

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* libio/ioseekoff.c (_IO_seekoff): Check the valid dir value.

	* libio/rewind.c (rewind): Clear the error.

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* grp/grp.h (getgrent_r, getgrgid_r, getgrnam_r): Add "__" to
	"buffer".

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* sysdeps/unix/sysv/linux/alpha/bits/time.h (timeval): Protect
	with __need_timeval.
	* sysdeps/unix/sysv/linux/mips/bits/time.h (timeval): Likewise.
	* sysdeps/unix/sysv/linux/bits/time.h (timeval): Likewise.

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* signal/signal.h (timespec, siginfo_t, sigwaitinfo, sigtimedwait,
	sigqueue): Protect with __USE_POSIX199309.

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* time/time.h (timespec): Protect with __USE_POSIX199309 instead of
	__USE_POSIX.

1998-10-24  H.J. Lu  <hjl@gnu.org>

	* libio/fileops.c (_IO_new_file_seekoff): Always resync with
	the kernel file offset.
	* libio/oldfileops.c (_IO_old_file_seekoff): Likewise.

4 files changed, 40 insertions, 7 deletions

diff --git a/libio/fileops.c b/libio/fileops.c
index be65d42..8930f6f 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -567,7 +567,7 @@ _IO_new_file_seekoff (fp, offset, dir, mode)
 	      _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
 	      {
 		_IO_mask_flags (fp, 0, _IO_EOF_SEEN);
-		return offset;
+		goto resync;
 	      }
 	    }
 #ifdef TODO
@@ -579,7 +579,7 @@ _IO_new_file_seekoff (fp, offset, dir, mode)
 		if (ignore (to_skip) != to_skip)
 		  goto dumb;
 		_IO_mask_flags (fp, 0, _IO_EOF_SEEN);
-		return offset;
+		goto resync;
 	      }
 #endif
 	}
@@ -590,7 +590,7 @@ _IO_new_file_seekoff (fp, offset, dir, mode)
 	    _IO_switch_to_backup_area (fp);
 	  gbump (fp->_IO_read_end + rel_offset - fp->_IO_read_ptr);
 	  _IO_mask_flags (fp, 0, _IO_EOF_SEEN);
-	  return offset;
+	  goto resync;
 	}
 #endif
     }
@@ -646,6 +646,16 @@ _IO_new_file_seekoff (fp, offset, dir, mode)
       _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
     }
   return result;
+
+resync:
+  /* We need to do it since it is possible that the file offset in
+     the kernel may be changed behind our back. It may happen when
+     we fopen a file and then do a fork. One process may access the
+     the file and the kernel file offset will be changed. */
+  if (fp->_offset >= 0)
+    _IO_SYSSEEK (fp, fp->_offset, 0);
+
+  return offset;
 }
 
 _IO_ssize_t
diff --git a/libio/ioseekoff.c b/libio/ioseekoff.c
index 54a8d19..4a951dd 100644
--- a/libio/ioseekoff.c
+++ b/libio/ioseekoff.c
@@ -24,6 +24,13 @@
    General Public License.  */
 
 #include <libioP.h>
+#include <errno.h> 
+#ifndef errno 
+extern int errno; 
+#endif 
+#ifndef __set_errno 
+# define __set_errno(Val) errno = (Val)  
+#endif 
 
 _IO_fpos64_t
 _IO_seekoff (fp, offset, dir, mode)
@@ -34,13 +41,18 @@ _IO_seekoff (fp, offset, dir, mode)
 {
   _IO_fpos64_t retval;
 
+  if (dir != _IO_seek_cur && dir != _IO_seek_set && dir != _IO_seek_end) 
+    { 
+      __set_errno (EINVAL); 
+      return EOF; 
+    }
+
   /* If we have a backup buffer, get rid of it, since the __seekoff
      callback may not know to do the right thing about it.
      This may be over-kill, but it'll do for now. TODO */
   _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
 
-
   if (mode != 0 && _IO_have_backup (fp))
     {
       if (dir == _IO_seek_cur && _IO_in_backup (fp))
diff --git a/libio/oldfileops.c b/libio/oldfileops.c
index 59de8d8..e0f8e65 100644
--- a/libio/oldfileops.c
+++ b/libio/oldfileops.c
@@ -514,7 +514,7 @@ _IO_old_file_seekoff (fp, offset, dir, mode)
 	      _IO_setg (fp, fp->_IO_buf_base, fp->_IO_buf_base + rel_offset,
 			fp->_IO_read_end);
 	      _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
-	      return offset;
+	      goto resync;
 	    }
 #ifdef TODO
 	    /* If we have streammarkers, seek forward by reading ahead. */
@@ -524,7 +524,7 @@ _IO_old_file_seekoff (fp, offset, dir, mode)
 		  - (fp->_IO_read_ptr - fp->_IO_read_base);
 		if (ignore (to_skip) != to_skip)
 		  goto dumb;
-		return offset;
+		goto resync;
 	      }
 #endif
 	}
@@ -534,7 +534,7 @@ _IO_old_file_seekoff (fp, offset, dir, mode)
 	  if (!_IO_in_backup (fp))
 	    _IO_switch_to_backup_area (fp);
 	  gbump (fp->_IO_read_end + rel_offset - fp->_IO_read_ptr);
-	  return offset;
+	  goto resync;
 	}
 #endif
     }
@@ -590,6 +590,16 @@ _IO_old_file_seekoff (fp, offset, dir, mode)
       _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base);
     }
   return result;
+
+resync:
+  /* We need to do it since it is possible that the file offset in
+     the kernel may be changed behind our back. It may happen when
+     we fopen a file and then do a fork. One process may access the
+     the file and the kernel file offset will be changed. */
+  if (fp->_old_offset >= 0)
+    _IO_SYSSEEK (fp, fp->_old_offset, 0);
+
+  return offset;
 }
 
 _IO_ssize_t
diff --git a/libio/rewind.c b/libio/rewind.c
index fb6afbc..a9ea36e 100644
--- a/libio/rewind.c
+++ b/libio/rewind.c
@@ -34,6 +34,7 @@ rewind (fp)
   _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   _IO_rewind (fp);
+  _IO_clearerr (fp);
   _IO_funlockfile (fp);
   _IO_cleanup_region_end (0);
 }