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/**
* @file support/junction/locations.c
* @brief Utility functions to manage NFS locations data
*/
/*
* 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 <sys/types.h>
#include <sys/stat.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include "junction.h"
/**
* Free an array of NUL-terminated C strings
*
* @param array array of pointers to C strings
*/
void
nfs_free_string_array(char **array)
{
unsigned int i;
if (array == NULL)
return;
for (i = 0; array[i] != NULL; i++)
free(array[i]);
free(array);
}
/**
* Duplicate an array of NUL-terminated C strings
*
* @param array array of pointers to C strings
* @return freshly allocated array of points to C strings, or NULL
*
* Caller must free the returned array with nfs_free_string_array()
*/
__attribute_malloc__ char **
nfs_dup_string_array(char **array)
{
unsigned int size, i;
char **result;
if (array == NULL)
return NULL;
for (size = 0; array[size] != NULL; size++);
result = calloc(size + 1, sizeof(char *));
if (result == NULL)
return NULL;
for (i = 0; i < size; i++) {
result[i] = strdup(array[i]);
if (result[i] == NULL) {
nfs_free_string_array(result);
return NULL;
}
}
return result;
}
/**
* Free a single NFS location
*
* @param location pointer to nfs_fsloc data
*/
void
nfs_free_location(struct nfs_fsloc *location)
{
nfs_free_string_array(location->nfl_rootpath);
free(location->nfl_hostname);
free(location);
}
/**
* Free a list of NFS locations
*
* @param locations pointer to list of one or more locations
*/
void
nfs_free_locations(struct nfs_fsloc *locations)
{
struct nfs_fsloc *fsloc;
while (locations != NULL) {
fsloc = locations;
locations = fsloc->nfl_next;
nfs_free_location(fsloc);
}
}
/**
* Allocate a fresh nfs_fsloc structure
*
* @return pointer to new empty nfs_fsloc data structure
*
* Caller must free returned locations with nfs_free_location().
*/
struct nfs_fsloc *
nfs_new_location(void)
{
return calloc(1, sizeof(struct nfs_fsloc));
}
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