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Diffstat (limited to 'contrib/amd/amd/amfs_error.c')
-rw-r--r-- | contrib/amd/amd/amfs_error.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/contrib/amd/amd/amfs_error.c b/contrib/amd/amd/amfs_error.c new file mode 100644 index 0000000..ccb037b --- /dev/null +++ b/contrib/amd/amd/amfs_error.c @@ -0,0 +1,150 @@ +/* + * Copyright (c) 1997-1998 Erez Zadok + * Copyright (c) 1989 Jan-Simon Pendry + * Copyright (c) 1989 Imperial College of Science, Technology & Medicine + * Copyright (c) 1989 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Jan-Simon Pendry at Imperial College, London. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * %W% (Berkeley) %G% + * + * $Id: amfs_error.c,v 5.2.2.1 1992/02/09 15:08:21 jsp beta $ + * + */ + +/* + * Error file system. + * This is used as a last resort catchall if + * nothing else worked. EFS just returns lots + * of error codes, except for unmount which + * always works of course. + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* HAVE_CONFIG_H */ +#include <am_defs.h> +#include <amd.h> + +static char * amfs_error_match(am_opts *fo); +static int amfs_error_fmount(mntfs *mf); +static int amfs_error_fumount(mntfs *mf); +static void amfs_error_umounted(am_node *mp); + + +/* + * Ops structure + */ +am_ops amfs_error_ops = +{ + "error", + amfs_error_match, + 0, /* amfs_error_init */ + amfs_auto_fmount, + amfs_error_fmount, + amfs_auto_fumount, + amfs_error_fumount, + amfs_error_lookuppn, + amfs_error_readdir, + 0, /* amfs_error_readlink */ + 0, /* amfs_error_mounted */ + amfs_error_umounted, + find_amfs_auto_srvr, + FS_DISCARD +}; + + + +/* + * EFS file system always matches + */ +static char * +amfs_error_match(am_opts *fo) +{ + return strdup("(error-hook)"); +} + + +static int +amfs_error_fmount(mntfs *mf) +{ + return ENOENT; +} + + +static int +amfs_error_fumount(mntfs *mf) +{ + /* + * Always succeed + */ + return 0; +} + + +/* + * EFS interface to RPC lookup() routine. + * Should never get here in the automounter. + * If we do then just give an error. + */ +am_node * +amfs_error_lookuppn(am_node *mp, char *fname, int *error_return, int op) +{ + *error_return = ESTALE; + return 0; +} + + +/* + * EFS interface to RPC readdir() routine. + * Should never get here in the automounter. + * If we do then just give an error. + */ +int +amfs_error_readdir(am_node *mp, nfscookie cookie, nfsdirlist *dp, nfsentry *ep, int count) +{ + return ESTALE; +} + + +/* + * umounted() callback for EFS. + * + * This prevents core-dumps on callbacks to error file-systems from + * nfsx_fumount. + */ +static void +amfs_error_umounted(am_node *mp) +{ + /* nothing to do */ +} |