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/* Copyright (C) 2001-2005 by Hans Reiser, licensing governed by
reiser4progs/COPYING.
sdext_plug.c -- plugin id stat data extension plugin. */
#include "sdext_plug.h"
reiser4_core_t *sdext_pset_core = NULL;
#ifndef ENABLE_MINIMAL
static void sdext_plug_info(stat_entity_t *stat) {
sdext_plug_t *ext;
uint8_t i;
stat->info.digest = NULL;
/* When inserting new extentions, nothing to be done. */
if (stat->plug->p.id.id != SDEXT_PSET_ID || !stat)
return;
ext = (sdext_plug_t *)stat_body(stat);
for (i = 0; i < sdext_plug_get_count(ext); i++) {
rid_t mem, id;
mem = sdext_plug_get_member(ext, i);
id = sdext_plug_get_pid(ext, i);
if (mem != SDEXT_PSET_ID)
continue;
stat->info.digest = sdext_pset_core->pset_ops.find(mem, id, 1);
if (stat->info.digest == INVAL_PTR)
stat->info.digest = NULL;
return;
}
}
#endif
uint32_t sdext_plug_length(stat_entity_t *stat, void *hint) {
uint16_t count = 0;
uint64_t mask;
aal_assert("vpf-1844", stat != NULL || hint != NULL);
/* If hint is given, count its pset. */
if (hint) {
sdhint_plug_t *h = (sdhint_plug_t *)hint;
mask = h->plug_mask;
while (mask) {
if (mask & 1) count++;
mask >>= 1;
}
} else {
sdext_plug_t *plug = (sdext_plug_t *)stat_body(stat);
count = sdext_plug_get_count(plug);
}
/* Count on-disk pset. */
return sizeof(sdext_plug_slot_t) * count +
(count ? sizeof(sdext_plug_t) : 0);
}
static errno_t sdext_plug_open(stat_entity_t *stat, void *hint) {
sdhint_plug_t *plugh;
sdext_plug_t *ext;
int is_pset;
uint16_t i;
aal_assert("vpf-1597", stat != NULL);
aal_assert("vpf-1598", hint != NULL);
plugh = (sdhint_plug_t *)hint;
ext = (sdext_plug_t *)stat_body(stat);
is_pset = stat->plug->p.id.id == SDEXT_PSET_ID;
aal_memset(plugh, 0, sizeof(sdhint_plug_t));
for (i = 0; i < sdext_plug_get_count(ext); i++) {
rid_t mem, id;
mem = sdext_plug_get_member(ext, i);
id = sdext_plug_get_pid(ext, i);
/* Check the member id valideness. */
if (mem >= PSET_STORE_LAST)
return -EIO;
/* Check if we met this member already. */
if (plugh->plug_mask & (1 << mem))
return -EIO;
/* Obtain the plugin by the id. */
plugh->plug[mem] = sdext_pset_core->pset_ops.find(
mem, id, is_pset);
if (plugh->plug[mem] == INVAL_PTR) {
#ifndef ENABLE_MINIMAL
aal_error("Node (%llu), item (%u): Failed to find "
"a plugin of the pset member (%u), id "
"(%u).", place_blknr(stat->place),
stat->place->pos.item, mem, id);
return -EIO;
#else
plugh->plug[mem] = NULL;
#endif
}
/* For those where no plugin is found but the id is correct,
keep the id in plug set, remember it is a parameter. */
if (plugh->plug[mem] == NULL)
plugh->plug[mem] = (void *)id;
plugh->plug_mask |= (1 << mem);
}
return 0;
}
#ifndef ENABLE_MINIMAL
static errno_t sdext_plug_init(stat_entity_t *stat, void *hint) {
sdhint_plug_t *plugh;
tree_entity_t *tree;
sdext_plug_t *ext;
uint16_t count = 0;
uint16_t id;
rid_t mem;
aal_assert("vpf-1600", stat != NULL);
aal_assert("vpf-1599", hint != NULL);
plugh = (sdhint_plug_t *)hint;
ext = (sdext_plug_t *)stat_body(stat);
tree = stat->place->node->tree;
for (mem = 0; mem < PSET_STORE_LAST; mem++) {
/* Find the plugin to be stored. */
if (!(plugh->plug_mask & (1 << mem)))
continue;
sdext_plug_set_member(ext, count, mem);
id = (tree->param_mask & (1 << mem)) ?
((uint32_t)plugh->plug[mem]) :
plugh->plug[mem]->id.id;
sdext_plug_set_pid(ext, count, id);
count++;
}
sdext_plug_set_count(ext, count);
return 0;
}
extern errno_t sdext_plug_check_struct(stat_entity_t *stat,
repair_hint_t *hint);
extern void sdext_plug_print(stat_entity_t *stat,
aal_stream_t *stream,
uint16_t options);
#endif
reiser4_sdext_plug_t sdext_pset_plug = {
.p = {
.id = {SDEXT_PSET_ID, 0, SDEXT_PLUG_TYPE},
#ifndef ENABLE_MINIMAL
.label = "sdext_plugin_set",
.desc = "Plugin Set StatData extension plugin.",
#endif
},
#ifndef ENABLE_MINIMAL
.init = sdext_plug_init,
.info = sdext_plug_info,
.print = sdext_plug_print,
.check_struct = sdext_plug_check_struct,
#else
.info = NULL,
#endif
.open = sdext_plug_open,
.length = sdext_plug_length
};
reiser4_sdext_plug_t sdext_hset_plug = {
.p = {
.id = {SDEXT_HSET_ID, 0, SDEXT_PLUG_TYPE},
#ifndef ENABLE_MINIMAL
.label = "sdext_heir_set",
.desc = "Heir Set StatData extension plugin.",
#endif
},
#ifndef ENABLE_MINIMAL
.init = sdext_plug_init,
.info = sdext_plug_info,
.print = sdext_plug_print,
.check_struct = sdext_plug_check_struct,
#else
.info = NULL,
#endif
.open = sdext_plug_open,
.length = sdext_plug_length
};
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