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mirror of git://sourceware.org/git/lvm2.git synced 2024-12-30 17:18:21 +03:00
lvm2/lib/integrity/integrity.c
Zdenek Kabelac 5f7a7af7f2 cleanup: no backtraces needed after log_error
Reduce double backtracing.
2021-03-10 01:11:52 +01:00

343 lines
9.8 KiB
C

/*
* Copyright (C) 2013-2016 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "base/memory/zalloc.h"
#include "lib/misc/lib.h"
#include "lib/commands/toolcontext.h"
#include "lib/metadata/segtype.h"
#include "lib/display/display.h"
#include "lib/format_text/text_export.h"
#include "lib/config/config.h"
#include "lib/datastruct/str_list.h"
#include "lib/misc/lvm-string.h"
#include "lib/activate/activate.h"
#include "lib/metadata/metadata.h"
#include "lib/metadata/lv_alloc.h"
#include "lib/config/defaults.h"
#define SEG_LOG_ERROR(t, p...) \
log_error(t " segment %s of logical volume %s.", ## p, \
dm_config_parent_name(sn), seg->lv->name), 0;
static void _integrity_display(const struct lv_segment *seg)
{
/* TODO: lvdisplay segments */
}
static int _integrity_text_import(struct lv_segment *seg,
const struct dm_config_node *sn,
struct dm_hash_table *pv_hash __attribute__((unused)))
{
struct integrity_settings *set;
struct logical_volume *origin_lv = NULL;
struct logical_volume *meta_lv = NULL;
const char *origin_name = NULL;
const char *meta_dev = NULL;
const char *mode = NULL;
const char *hash = NULL;
memset(&seg->integrity_settings, 0, sizeof(struct integrity_settings));
set = &seg->integrity_settings;
/* origin always set */
if (!dm_config_has_node(sn, "origin"))
return SEG_LOG_ERROR("origin not specified in");
if (!dm_config_get_str(sn, "origin", &origin_name))
return SEG_LOG_ERROR("origin must be a string in");
if (!(origin_lv = find_lv(seg->lv->vg, origin_name)))
return SEG_LOG_ERROR("Unknown LV specified for integrity origin %s in", origin_name);
if (!set_lv_segment_area_lv(seg, 0, origin_lv, 0, 0))
return_0;
/* data_sectors always set */
if (!dm_config_get_uint64(sn, "data_sectors", &seg->integrity_data_sectors))
return SEG_LOG_ERROR("integrity data_sectors must be set in");
/* mode always set */
if (!dm_config_get_str(sn, "mode", &mode))
return SEG_LOG_ERROR("integrity mode must be set in");
if (strlen(mode) > 7)
return SEG_LOG_ERROR("integrity mode invalid in");
strncpy(set->mode, mode, 7);
/* tag_size always set */
if (!dm_config_get_uint32(sn, "tag_size", &set->tag_size))
return SEG_LOG_ERROR("integrity tag_size must be set in");
/* block_size always set */
if (!dm_config_get_uint32(sn, "block_size", &set->block_size))
return SEG_LOG_ERROR("integrity block_size invalid in");
/* internal_hash always set */
if (!dm_config_get_str(sn, "internal_hash", &hash))
return SEG_LOG_ERROR("integrity internal_hash must be set in");
if (!(set->internal_hash = dm_pool_strdup(seg->lv->vg->vgmem, hash)))
return SEG_LOG_ERROR("integrity internal_hash failed to be set in");
/* meta_dev optional */
if (dm_config_has_node(sn, "meta_dev")) {
if (!dm_config_get_str(sn, "meta_dev", &meta_dev))
return SEG_LOG_ERROR("meta_dev must be a string in");
if (!(meta_lv = find_lv(seg->lv->vg, meta_dev)))
return SEG_LOG_ERROR("Unknown logical volume %s specified for integrity in", meta_dev);
}
if (dm_config_has_node(sn, "recalculate")) {
if (!dm_config_get_uint32(sn, "recalculate", &seg->integrity_recalculate))
return SEG_LOG_ERROR("integrity recalculate error in");
}
/* the rest are optional */
if (dm_config_has_node(sn, "journal_sectors")) {
if (!dm_config_get_uint32(sn, "journal_sectors", &set->journal_sectors))
return SEG_LOG_ERROR("Unknown integrity_setting in");
set->journal_sectors_set = 1;
}
if (dm_config_has_node(sn, "interleave_sectors")) {
if (!dm_config_get_uint32(sn, "interleave_sectors", &set->interleave_sectors))
return SEG_LOG_ERROR("Unknown integrity_setting in");
set->interleave_sectors_set = 1;
}
if (dm_config_has_node(sn, "buffer_sectors")) {
if (!dm_config_get_uint32(sn, "buffer_sectors", &set->buffer_sectors))
return SEG_LOG_ERROR("Unknown integrity_setting in");
set->buffer_sectors_set = 1;
}
if (dm_config_has_node(sn, "journal_watermark")) {
if (!dm_config_get_uint32(sn, "journal_watermark", &set->journal_watermark))
return SEG_LOG_ERROR("Unknown integrity_setting in");
set->journal_watermark_set = 1;
}
if (dm_config_has_node(sn, "commit_time")) {
if (!dm_config_get_uint32(sn, "commit_time", &set->commit_time))
return SEG_LOG_ERROR("Unknown integrity_setting in");
set->commit_time_set = 1;
}
if (dm_config_has_node(sn, "bitmap_flush_interval")) {
if (!dm_config_get_uint32(sn, "bitmap_flush_interval", &set->bitmap_flush_interval))
return SEG_LOG_ERROR("Unknown integrity_setting in");
set->bitmap_flush_interval_set = 1;
}
if (dm_config_has_node(sn, "sectors_per_bit")) {
if (!dm_config_get_uint64(sn, "sectors_per_bit", &set->sectors_per_bit))
return SEG_LOG_ERROR("Unknown integrity_setting in");
set->sectors_per_bit_set = 1;
}
seg->origin = origin_lv;
seg->integrity_meta_dev = meta_lv;
seg->lv->status |= INTEGRITY;
if (meta_lv)
meta_lv->status |= INTEGRITY_METADATA;
if (meta_lv && !add_seg_to_segs_using_this_lv(meta_lv, seg))
return_0;
return 1;
}
static int _integrity_text_import_area_count(const struct dm_config_node *sn,
uint32_t *area_count)
{
*area_count = 1;
return 1;
}
static int _integrity_text_export(const struct lv_segment *seg,
struct formatter *f)
{
const struct integrity_settings *set = &seg->integrity_settings;
outf(f, "origin = \"%s\"", seg_lv(seg, 0)->name);
outf(f, "data_sectors = %llu", (unsigned long long)seg->integrity_data_sectors);
outf(f, "mode = \"%s\"", set->mode);
outf(f, "tag_size = %u", set->tag_size);
outf(f, "block_size = %u", set->block_size);
outf(f, "internal_hash = \"%s\"", set->internal_hash);
if (seg->integrity_meta_dev)
outf(f, "meta_dev = \"%s\"", seg->integrity_meta_dev->name);
if (seg->integrity_recalculate)
outf(f, "recalculate = %u", seg->integrity_recalculate);
if (set->journal_sectors_set)
outf(f, "journal_sectors = %u", set->journal_sectors);
if (set->interleave_sectors_set)
outf(f, "interleave_sectors = %u", set->interleave_sectors);
if (set->buffer_sectors_set)
outf(f, "buffer_sectors = %u", set->buffer_sectors);
if (set->journal_watermark_set)
outf(f, "journal_watermark = %u", set->journal_watermark);
if (set->commit_time_set)
outf(f, "commit_time = %u", set->commit_time);
if (set->bitmap_flush_interval)
outf(f, "bitmap_flush_interval = %u", set->bitmap_flush_interval);
if (set->sectors_per_bit)
outf(f, "sectors_per_bit = %llu", (unsigned long long)set->sectors_per_bit);
return 1;
}
static void _destroy(struct segment_type *segtype)
{
free((void *) segtype);
}
#ifdef DEVMAPPER_SUPPORT
static int _target_present(struct cmd_context *cmd,
const struct lv_segment *seg __attribute__((unused)),
unsigned *attributes __attribute__((unused)))
{
static int _integrity_checked = 0;
static int _integrity_present = 0;
uint32_t maj, min, patchlevel;
if (!activation())
return 0;
if (!_integrity_checked) {
_integrity_checked = 1;
if (!(_integrity_present = target_present_version(cmd, TARGET_NAME_INTEGRITY, 1,
&maj, &min, &patchlevel)))
return 0;
if (maj < 1 || min < 6) {
log_error("Integrity target version older than minimum 1.6.0");
return 0;
}
}
return _integrity_present;
}
static int _modules_needed(struct dm_pool *mem,
const struct lv_segment *seg __attribute__((unused)),
struct dm_list *modules)
{
if (!str_list_add(mem, modules, MODULE_NAME_INTEGRITY)) {
log_error("String list allocation failed for integrity module.");
return 0;
}
return 1;
}
#endif /* DEVMAPPER_SUPPORT */
#ifdef DEVMAPPER_SUPPORT
static int _integrity_add_target_line(struct dev_manager *dm,
struct dm_pool *mem,
struct cmd_context *cmd __attribute__((unused)),
void **target_state __attribute__((unused)),
struct lv_segment *seg,
const struct lv_activate_opts *laopts,
struct dm_tree_node *node, uint64_t len,
uint32_t *pvmove_mirror_count __attribute__((unused)))
{
char *origin_uuid;
char *meta_uuid = NULL;
if (!seg_is_integrity(seg)) {
log_error(INTERNAL_ERROR "Passed segment is not integrity.");
return 0;
}
if (!(origin_uuid = build_dm_uuid(mem, seg_lv(seg, 0), NULL)))
return_0;
if (seg->integrity_meta_dev) {
if (!(meta_uuid = build_dm_uuid(mem, seg->integrity_meta_dev, NULL)))
return_0;
}
if (!seg->integrity_data_sectors) {
log_error("_integrity_add_target_line zero size");
return 0;
}
if (!dm_tree_node_add_integrity_target(node, seg->integrity_data_sectors,
origin_uuid, meta_uuid,
&seg->integrity_settings,
seg->integrity_recalculate))
return_0;
return 1;
}
#endif /* DEVMAPPER_SUPPORT */
static struct segtype_handler _integrity_ops = {
.display = _integrity_display,
.text_import = _integrity_text_import,
.text_import_area_count = _integrity_text_import_area_count,
.text_export = _integrity_text_export,
#ifdef DEVMAPPER_SUPPORT
.add_target_line = _integrity_add_target_line,
.target_present = _target_present,
.modules_needed = _modules_needed,
#endif
.destroy = _destroy,
};
int init_integrity_segtypes(struct cmd_context *cmd,
struct segtype_library *seglib)
{
struct segment_type *segtype = zalloc(sizeof(*segtype));
if (!segtype) {
log_error("Failed to allocate memory for integrity segtype");
return 0;
}
segtype->name = SEG_TYPE_NAME_INTEGRITY;
segtype->flags = SEG_INTEGRITY;
segtype->ops = &_integrity_ops;
if (!lvm_register_segtype(seglib, segtype))
return_0;
log_very_verbose("Initialised segtype: %s", segtype->name);
return 1;
}