Address comments

5 files changed, 18 insertions, 10 deletions

diff --git a/sysdeps/mach/hurd/ftok.c b/sysdeps/mach/hurd/ftok.c
index 69e6bf58ff..a6aba15c86 100644
--- a/sysdeps/mach/hurd/ftok.c
+++ b/sysdeps/mach/hurd/ftok.c
@@ -1,6 +1,6 @@
-/* Copyright (C) 1995-2015 Free Software Foundation, Inc.
+/* SysV ftok for Hurd.
+   Copyright (C) 1995-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -21,8 +21,9 @@
 
 
 /* In the Hurd, we use the second-to-most-significant bit as flag for
-   private keys.  We use a different order of the components so that
-   the biggest one---the inode number---is affected by this.  */
+   private keys.  We use an order of the components different from the generic
+   code in sysvipc/ftok.c so that the biggest one--the inode number--is
+   affected by this.  */
 
 key_t
 ftok (pathname, proj_id)
diff --git a/sysdeps/mach/hurd/shmat.c b/sysdeps/mach/hurd/shmat.c
index a8900e0a3f..6bc88705b8 100644
--- a/sysdeps/mach/hurd/shmat.c
+++ b/sysdeps/mach/hurd/shmat.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005-2015 Free Software Foundation, Inc.
+/* SysV shmat for Hurd.
+   Copyright (C) 2005-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -53,7 +54,9 @@ __shmat (int shmid, const void *shmaddr, int shmflg)
   res = __fstat (fd, &statbuf);
   if (res < 0)
     {
+      err = errno;
       __close (fd);
+      errno = err;
       return (void *) -1;
     }
 
@@ -68,6 +71,7 @@ __shmat (int shmid, const void *shmaddr, int shmflg)
   if (err)
     {
       munmap (addr, statbuf.st_size);
+      errno = err;
       return (void *) -1;
     }
 
diff --git a/sysdeps/mach/hurd/shmctl.c b/sysdeps/mach/hurd/shmctl.c
index aee5e15a56..a991a0c8de 100644
--- a/sysdeps/mach/hurd/shmctl.c
+++ b/sysdeps/mach/hurd/shmctl.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005-2015 Free Software Foundation, Inc.
+/* SysV shmctl for Hurd.
+   Copyright (C) 2005-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -26,7 +27,7 @@
 
 #include "sysvshm.h"
 
-/* Provide operations to control over shared memory segments.  */
+/* Provide operations to control shared memory segments.  */
 int
 __shmctl (int id, int cmd, struct shmid_ds *buf)
 {
diff --git a/sysdeps/mach/hurd/shmdt.c b/sysdeps/mach/hurd/shmdt.c
index 245fd55a89..988fab8ee6 100644
--- a/sysdeps/mach/hurd/shmdt.c
+++ b/sysdeps/mach/hurd/shmdt.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005-2015 Free Software Foundation, Inc.
+/* SysV shmdt for Hurd.
+   Copyright (C) 2005-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/mach/hurd/shmget.c b/sysdeps/mach/hurd/shmget.c
index 9b580949b8..2065b41989 100644
--- a/sysdeps/mach/hurd/shmget.c
+++ b/sysdeps/mach/hurd/shmget.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005-2015 Free Software Foundation, Inc.
+/* SysV shmget for Hurd.
+   Copyright (C) 2005-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -94,7 +95,7 @@ get_exclusive (int shmflags, size_t size, key_t *r_key, int *r_fd)
       key = SHM_PRIV_KEY_START;
 
       /* Try to link the shared memory segment into the filesystem
-	 (exclusively).  Private segments have negative keys.  */
+	 (exclusively).  */
       do
 	{
 	  sprintf (filename, SHM_NAMEPRI, key);