Don't override previously installed signal handlers.

[gnulib.git] / lib / mountlist.c

diff --git a/lib/mountlist.c b/lib/mountlist.c
index 3774c8e..4c975c6 100644 (file)
--- a/lib/mountlist.c
+++ b/lib/mountlist.c
@@ -1,12 +1,12 @@
 /* mountlist.c -- return a list of mounted file systems
 
    Copyright (C) 1991, 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-   2004, 2005, 2006 Free Software Foundation, Inc.
+   2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -14,12 +14,9 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "mountlist.h"
 
@@ -30,10 +27,6 @@
 
 #include "xalloc.h"
 
-#ifndef strstr
-char *strstr ();
-#endif
-
 #include <errno.h>
 
 #include <fcntl.h>
@@ -82,6 +75,10 @@ char *strstr ();
 # include <sys/mount.h>
 #endif
 
+#ifdef MOUNTED_GETMNTINFO2     /* NetBSD 3.0.  */
+# include <sys/statvfs.h>
+#endif
+
 #ifdef MOUNTED_GETMNT          /* Ultrix.  */
 # include <sys/mount.h>
 # include <sys/fs_types.h>
@@ -141,12 +138,24 @@ char *strstr ();
 # define SIZE_MAX ((size_t) -1)
 #endif
 
+/* The results of open() in this file are not used with fchdir,
+   therefore save some unnecessary work in fchdir.c.  */
+#undef open
+#undef close
+
+/* The results of opendir() in this file are not used with dirfd and fchdir,
+   therefore save some unnecessary work in fchdir.c.  */
+#undef opendir
+#undef closedir
+
 #ifndef ME_DUMMY
 # define ME_DUMMY(Fs_name, Fs_type)            \
     (strcmp (Fs_type, "autofs") == 0           \
      || strcmp (Fs_type, "none") == 0          \
      || strcmp (Fs_type, "proc") == 0          \
      || strcmp (Fs_type, "subfs") == 0         \
+     /* for NetBSD 3.0 */                      \
+     || strcmp (Fs_type, "kernfs") == 0                \
      /* for Irix 6.5 */                                \
      || strcmp (Fs_type, "ignore") == 0)
 #endif
@@ -164,7 +173,7 @@ char *strstr ();
 
 #if MOUNTED_GETMNTINFO
 
-# if ! HAVE_F_FSTYPENAME_IN_STATFS
+# if ! HAVE_STRUCT_STATFS_F_FSTYPENAME
 static char *
 fstype_to_string (short int t)
 {
@@ -258,13 +267,12 @@ fstype_to_string (short int t)
       return "?";
     }
 }
-# endif /* ! HAVE_F_FSTYPENAME_IN_STATFS */
+# endif
 
-/* __NetBSD__ || BSD_NET2 || __OpenBSD__ */
 static char *
 fsp_to_string (const struct statfs *fsp)
 {
-# if defined HAVE_F_FSTYPENAME_IN_STATFS
+# if HAVE_STRUCT_STATFS_F_FSTYPENAME
   return (char *) (fsp->f_fstypename);
 # else
   return fstype_to_string (fsp->f_type);
@@ -426,6 +434,32 @@ read_file_system_list (bool need_fs_type)
   }
 #endif /* MOUNTED_GETMNTINFO */
 
+#ifdef MOUNTED_GETMNTINFO2     /* NetBSD 3.0.  */
+  {
+    struct statvfs *fsp;
+    int entries;
+
+    entries = getmntinfo (&fsp, MNT_NOWAIT);
+    if (entries < 0)
+      return NULL;
+    for (; entries-- > 0; fsp++)
+      {
+       me = xmalloc (sizeof *me);
+       me->me_devname = xstrdup (fsp->f_mntfromname);
+       me->me_mountdir = xstrdup (fsp->f_mntonname);
+       me->me_type = xstrdup (fsp->f_fstypename);
+       me->me_type_malloced = 1;
+       me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
+       me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
+       me->me_dev = (dev_t) -1;        /* Magic; means not known yet. */
+
+       /* Add to the linked list. */
+       *mtail = me;
+       mtail = &me->me_next;
+      }
+  }
+#endif /* MOUNTED_GETMNTINFO2 */
+
 #ifdef MOUNTED_GETMNT          /* Ultrix.  */
   {
     int offset = 0;