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/*
* Copyright (C) 2003 Serge van den Boom
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
* Nota bene: later versions of the GNU General Public License do not apply
* to this program.
*
* This program 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <assert.h>
#include <string.h>
#include "iointrn.h"
#include "uioport.h"
#include "mount.h"
#include "mounttree.h"
#include "mem.h"
#include "uioutils.h"
#ifdef uio_MEM_DEBUG
# include "memdebug.h"
#endif
static void uio_Repository_delete(uio_Repository *repository);
static uio_Repository *uio_Repository_alloc(void);
static void uio_Repository_free(uio_Repository *repository);
void
uio_repositoryAddMount(uio_Repository *repository,
uio_MountInfo *mountInfo, uio_MountLocation location,
uio_MountInfo *relative) {
lockRepository(repository, uio_LOCK_WRITE);
switch (location) {
case uio_MOUNT_TOP: {
uio_MountInfo **newMounts;
newMounts = uio_malloc(
(repository->numMounts + 2) * sizeof (uio_MountInfo *));
newMounts[0] = mountInfo;
memcpy(&newMounts[1], repository->mounts,
(repository->numMounts + 1) * sizeof (uio_MountInfo *));
uio_free(repository->mounts);
repository->mounts = newMounts;
repository->numMounts++;
break;
}
case uio_MOUNT_BOTTOM:
repository->mounts = uio_realloc(repository->mounts,
(repository->numMounts + 2) * sizeof (uio_MountInfo *));
repository->mounts[repository->numMounts] = mountInfo;
repository->numMounts++;
break;
case uio_MOUNT_ABOVE: {
int i;
uio_MountInfo **newMounts;
i = 0;
while (repository->mounts[i] != relative)
i++;
newMounts = (uio_MountInfo **) insertArrayPointer(
(const void **) repository->mounts,
repository->numMounts + 1, i, (void *) mountInfo);
uio_free(repository->mounts);
repository->mounts = newMounts;
repository->numMounts++;
break;
}
case uio_MOUNT_BELOW: {
int i;
uio_MountInfo **newMounts;
i = 0;
while (repository->mounts[i] != relative)
i++;
i++;
newMounts = (uio_MountInfo **) insertArrayPointer(
(const void **) repository->mounts,
repository->numMounts + 1, i, (void *) mountInfo);
uio_free(repository->mounts);
repository->mounts = newMounts;
repository->numMounts++;
break;
}
default:
assert(false);
}
unlockRepository(repository);
}
void
uio_repositoryRemoveMount(uio_Repository *repository, uio_MountInfo *mountInfo) {
int i;
uio_MountInfo **newMounts;
lockRepository(repository, uio_LOCK_WRITE);
i = 0;
while (repository->mounts[i] != mountInfo)
i++;
newMounts = (uio_MountInfo **) excludeArrayPointer(
(const void **) repository->mounts, repository->numMounts + 1,
i, 1);
uio_free(repository->mounts);
repository->mounts = newMounts;
repository->numMounts--;
unlockRepository(repository);
}
// sets ref to 1
uio_Repository *
uio_Repository_new(int flags) {
uio_Repository *result;
result = uio_Repository_alloc();
result->ref = 1;
result->flags = flags;
result->numMounts = 0;
result->mounts = uio_malloc(1 * sizeof (uio_MountInfo *));
result->mounts[0] = NULL;
result->mountTree = uio_makeRootMountTree();
return result;
}
void
uio_Repository_unref(uio_Repository *repository) {
assert(repository->ref > 0);
repository->ref--;
if (repository->ref == 0)
uio_Repository_delete(repository);
}
static uio_Repository *
uio_Repository_alloc(void) {
uio_Repository *result = uio_malloc(sizeof (uio_Repository));
#ifdef uio_MEM_DEBUG
uio_MemDebug_debugAlloc(uio_Repository, (void *) result);
#endif
return result;
}
static void
uio_Repository_delete(uio_Repository *repository) {
assert(repository->numMounts == 0);
uio_free(repository->mounts);
uio_MountTree_delete(repository->mountTree);
uio_Repository_free(repository);
}
static void
uio_Repository_free(uio_Repository *repository) {
#ifdef uio_MEM_DEBUG
uio_MemDebug_debugFree(uio_Repository, (void *) repository);
#endif
uio_free(repository);
}
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