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/**
* @file utils/nfsref/remove.c
* @brief Remove junction metadata from a local file system object
*/
/*
* Copyright 2011, 2018 Oracle. All rights reserved.
*
* This file is part of nfs-utils.
*
* nfs-utils is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2.0 as
* published by the Free Software Foundation.
*
* nfs-utils is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License version 2.0 for more details.
*
* You should have received a copy of the GNU General Public License
* version 2.0 along with nfs-utils. If not, see:
*
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
*/
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include "junction.h"
#include "xlog.h"
#include "nfsref.h"
/**
* Display help message for "remove" subcommand
*
* @param progname NUL-terminated C string containing name of program
* @return program exit status
*/
int
nfsref_remove_help(const char *progname)
{
fprintf(stderr, " \n");
fprintf(stderr, "Usage: %s [ -t type ] remove <junction path>\n\n",
progname);
fprintf(stderr, "Remove the junction at <junction path>. For FedFS "
"junctions, FSL and FSN\n");
fprintf(stderr, "records are removed from the NSDB.\n");
return EXIT_SUCCESS;
}
/**
* Remove an NFS locations-style junction
*
* @param junct_path NUL-terminated C string containing pathname of junction
* @return program exit status
*/
static int
nfsref_remove_nfs_basic(const char *junct_path)
{
int status = EXIT_FAILURE;
FedFsStatus retval;
xlog(D_GENERAL, "%s: Removing FedFS junction from %s",
__func__, junct_path);
retval = nfs_delete_junction(junct_path);
switch (retval) {
case FEDFS_OK:
printf("Removed nfs-basic junction from %s\n", junct_path);
status = EXIT_SUCCESS;
break;
case FEDFS_ERR_NOTJUNCT:
xlog(L_ERROR, "%s is not an nfs-basic junction", junct_path);
break;
default:
xlog(L_ERROR, "Failed to delete %s: %s",
junct_path, nsdb_display_fedfsstatus(retval));
}
return status;
}
/**
* Remove any NFS junction information
*
* @param junct_path NUL-terminated C string containing pathname of junction
* @return program exit status
*/
static int
nfsref_remove_unspecified(const char *junct_path)
{
FedFsStatus retval;
xlog(D_GENERAL, "%s: Removing junction from %s",
__func__, junct_path);
retval = nfs_delete_junction(junct_path);
if (retval != FEDFS_OK) {
if (retval != FEDFS_ERR_NOTJUNCT)
goto out_err;
}
printf("Removed junction from %s\n", junct_path);
return EXIT_SUCCESS;
out_err:
switch (retval) {
case FEDFS_ERR_NOTJUNCT:
xlog(L_ERROR, "No junction information found in %s", junct_path);
break;
default:
xlog(L_ERROR, "Failed to delete %s: %s",
junct_path, nsdb_display_fedfsstatus(retval));
}
return EXIT_FAILURE;
}
/**
* Remove an NFS junction
*
* @param type type of junction to add
* @param junct_path NUL-terminated C string containing pathname of junction
* @return program exit status
*/
int
nfsref_remove(enum nfsref_type type, const char *junct_path)
{
switch (type) {
case NFSREF_TYPE_UNSPECIFIED:
return nfsref_remove_unspecified(junct_path);
case NFSREF_TYPE_NFS_BASIC:
return nfsref_remove_nfs_basic(junct_path);
default:
xlog(L_ERROR, "Unrecognized junction type");
}
return EXIT_FAILURE;
}
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