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Ignore whitespace Rev 3386 → Rev 4153

/branches/network/uspace/srv/fs/fat/fat_idx.c
214,7 → 214,7
};
 
/** Allocate a VFS index which is not currently in use. */
static bool fat_idx_alloc(dev_handle_t dev_handle, fs_index_t *index)
static bool fat_index_alloc(dev_handle_t dev_handle, fs_index_t *index)
{
unused_t *u;
276,7 → 276,7
}
 
/** Free a VFS index, which is no longer in use. */
static void fat_idx_free(dev_handle_t dev_handle, fs_index_t index)
static void fat_index_free(dev_handle_t dev_handle, fs_index_t index)
{
unused_t *u;
 
338,6 → 338,52
futex_up(&unused_futex);
}
 
static fat_idx_t *fat_idx_create(dev_handle_t dev_handle)
{
fat_idx_t *fidx;
 
fidx = (fat_idx_t *) malloc(sizeof(fat_idx_t));
if (!fidx)
return NULL;
if (!fat_index_alloc(dev_handle, &fidx->index)) {
free(fidx);
return NULL;
}
link_initialize(&fidx->uph_link);
link_initialize(&fidx->uih_link);
futex_initialize(&fidx->lock, 1);
fidx->dev_handle = dev_handle;
fidx->pfc = FAT_CLST_RES0; /* no parent yet */
fidx->pdi = 0;
fidx->nodep = NULL;
 
return fidx;
}
 
fat_idx_t *fat_idx_get_new(dev_handle_t dev_handle)
{
fat_idx_t *fidx;
 
futex_down(&used_futex);
fidx = fat_idx_create(dev_handle);
if (!fidx) {
futex_up(&used_futex);
return NULL;
}
unsigned long ikey[] = {
[UIH_DH_KEY] = dev_handle,
[UIH_INDEX_KEY] = fidx->index,
};
hash_table_insert(&ui_hash, ikey, &fidx->uih_link);
futex_down(&fidx->lock);
futex_up(&used_futex);
 
return fidx;
}
 
fat_idx_t *
fat_idx_get_by_pos(dev_handle_t dev_handle, fat_cluster_t pfc, unsigned pdi)
{
354,16 → 400,11
if (l) {
fidx = hash_table_get_instance(l, fat_idx_t, uph_link);
} else {
fidx = (fat_idx_t *) malloc(sizeof(fat_idx_t));
fidx = fat_idx_create(dev_handle);
if (!fidx) {
futex_up(&used_futex);
return NULL;
}
if (!fat_idx_alloc(dev_handle, &fidx->index)) {
free(fidx);
futex_up(&used_futex);
return NULL;
}
unsigned long ikey[] = {
[UIH_DH_KEY] = dev_handle,
370,13 → 411,8
[UIH_INDEX_KEY] = fidx->index,
};
link_initialize(&fidx->uph_link);
link_initialize(&fidx->uih_link);
futex_initialize(&fidx->lock, 1);
fidx->dev_handle = dev_handle;
fidx->pfc = pfc;
fidx->pdi = pdi;
fidx->nodep = NULL;
 
hash_table_insert(&up_hash, pkey, &fidx->uph_link);
hash_table_insert(&ui_hash, ikey, &fidx->uih_link);
387,6 → 423,32
return fidx;
}
 
void fat_idx_hashin(fat_idx_t *idx)
{
unsigned long pkey[] = {
[UPH_DH_KEY] = idx->dev_handle,
[UPH_PFC_KEY] = idx->pfc,
[UPH_PDI_KEY] = idx->pdi,
};
 
futex_down(&used_futex);
hash_table_insert(&up_hash, pkey, &idx->uph_link);
futex_up(&used_futex);
}
 
void fat_idx_hashout(fat_idx_t *idx)
{
unsigned long pkey[] = {
[UPH_DH_KEY] = idx->dev_handle,
[UPH_PFC_KEY] = idx->pfc,
[UPH_PDI_KEY] = idx->pdi,
};
 
futex_down(&used_futex);
hash_table_remove(&up_hash, pkey, 3);
futex_up(&used_futex);
}
 
fat_idx_t *
fat_idx_get_by_index(dev_handle_t dev_handle, fs_index_t index)
{
408,6 → 470,33
return fidx;
}
 
/** Destroy the index structure.
*
* @param idx The index structure to be destroyed.
*/
void fat_idx_destroy(fat_idx_t *idx)
{
unsigned long ikey[] = {
[UIH_DH_KEY] = idx->dev_handle,
[UIH_INDEX_KEY] = idx->index,
};
 
assert(idx->pfc == FAT_CLST_RES0);
 
futex_down(&used_futex);
/*
* Since we can only free unlinked nodes, the index structure is not
* present in the position hash (uph). We therefore hash it out from
* the index hash only.
*/
hash_table_remove(&ui_hash, ikey, 2);
futex_up(&used_futex);
/* Release the VFS index. */
fat_index_free(idx->dev_handle, idx->index);
/* Deallocate the structure. */
free(idx);
}
 
int fat_idx_init(void)
{
if (!hash_table_create(&up_hash, UPH_BUCKETS, 3, &uph_ops))