329 lines
7.4 KiB
C++
329 lines
7.4 KiB
C++
#include <iostream>
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#include <sstream>
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#include <string>
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#include <stdexcept>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "base/error_state.h"
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#include "base/nested_output.h"
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#include "era/commands.h"
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#include "era/writeset_tree.h"
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#include "era/era_array.h"
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#include "era/superblock.h"
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#include "persistent-data/block.h"
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#include "persistent-data/file_utils.h"
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#include "persistent-data/space_map.h"
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#include "persistent-data/space-maps/core.h"
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#include "persistent-data/transaction_manager.h"
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#include "version.h"
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using namespace base;
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using namespace boost;
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using namespace era;
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using namespace persistent_data;
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using namespace std;
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//----------------------------------------------------------------
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namespace {
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class reporter_base {
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public:
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reporter_base(nested_output &o)
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: out_(o),
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err_(NO_ERROR) {
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}
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virtual ~reporter_base() {}
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nested_output &out() {
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return out_;
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}
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nested_output::nest push() {
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return out_.push();
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}
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base::error_state get_error() const {
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return err_;
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}
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void mplus_error(error_state err) {
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err_ = combine_errors(err_, err);
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}
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private:
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nested_output &out_;
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error_state err_;
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};
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class superblock_reporter : public superblock_damage::damage_visitor, reporter_base {
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public:
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superblock_reporter(nested_output &o)
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: reporter_base(o) {
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}
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virtual void visit(superblock_damage::superblock_corrupt const &d) {
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out() << "superblock is corrupt" << end_message();
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{
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nested_output::nest _ = push();
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out() << d.get_desc() << end_message();
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}
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mplus_error(FATAL);
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}
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virtual void visit(superblock_damage::superblock_invalid const &d) {
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out() << "superblock is invalid" << end_message();
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{
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nested_output::nest _ = push();
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out() << d.get_desc() << end_message();
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}
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mplus_error(FATAL);
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}
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using reporter_base::get_error;
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};
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class writeset_tree_reporter : public writeset_tree_detail::damage_visitor, reporter_base {
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public:
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writeset_tree_reporter(nested_output &o)
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: reporter_base(o) {
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}
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void visit(writeset_tree_detail::missing_eras const &d) {
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out() << "missing eras from writeset tree" << end_message();
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{
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nested_output::nest _ = push();
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out() << d.get_desc() << end_message();
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out() << "Effected eras: [" << d.eras_.begin_.get()
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<< ", " << d.eras_.end_.get() << ")" << end_message();
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}
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mplus_error(FATAL);
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}
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void visit(writeset_tree_detail::damaged_writeset const &d) {
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out() << "damaged writeset" << end_message();
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{
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nested_output::nest _ = push();
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out() << d.get_desc() << end_message();
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out() << "Era: " << d.era_ << end_message();
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out() << "Missing bits: [" << d.missing_bits_.begin_.get()
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<< ", " << d.missing_bits_.end_.get() << ")" << end_message();
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}
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mplus_error(FATAL);
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}
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using reporter_base::get_error;
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};
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class era_array_reporter : public era_array_detail::damage_visitor, reporter_base {
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public:
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era_array_reporter(nested_output &o)
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: reporter_base(o) {
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}
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void visit(era_array_detail::missing_eras const &d) {
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out() << "missing eras from era array" << end_message();
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{
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nested_output::nest _ = push();
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out() << d.get_desc() << end_message();
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out() << "Effected eras: [" << d.eras_.begin_.get()
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<< ", " << d.eras_.end_.get() << ")" << end_message();
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}
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mplus_error(FATAL);
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}
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void visit(era_array_detail::invalid_era const &d) {
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out() << "invalid era in era array" << end_message();
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{
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nested_output::nest _ = push();
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out() << d.get_desc() << end_message();
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out() << "block: " << d.block_ << ", era: " << d.era_ << end_message();
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}
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mplus_error(FATAL);
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}
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using reporter_base::get_error;
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};
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//--------------------------------
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transaction_manager::ptr open_tm(block_manager<>::ptr bm) {
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space_map::ptr sm(new core_map(bm->get_nr_blocks()));
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sm->inc(SUPERBLOCK_LOCATION);
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transaction_manager::ptr tm(new transaction_manager(bm, sm));
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return tm;
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}
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//--------------------------------
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struct flags {
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flags()
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: superblock_only_(false),
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quiet_(false) {
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}
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bool superblock_only_;
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bool quiet_;
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};
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struct stat guarded_stat(string const &path) {
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struct stat info;
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int r = ::stat(path.c_str(), &info);
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if (r) {
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ostringstream msg;
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char buffer[128], *ptr;
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ptr = ::strerror_r(errno, buffer, sizeof(buffer));
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msg << path << ": " << ptr;
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throw runtime_error(msg.str());
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}
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return info;
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}
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error_state metadata_check(block_manager<>::ptr bm, flags const &fs) {
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nested_output out(cerr, 2);
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if (fs.quiet_)
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out.disable();
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superblock_reporter sb_rep(out);
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out << "examining superblock" << end_message();
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{
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nested_output::nest _ = out.push();
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check_superblock(bm, bm->get_nr_blocks(), sb_rep);
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}
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if (sb_rep.get_error() == FATAL)
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return FATAL;
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superblock sb = read_superblock(bm);
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transaction_manager::ptr tm = open_tm(bm);
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writeset_tree_reporter wt_rep(out);
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{
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era_detail_traits::ref_counter rc(tm);
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writeset_tree wt(*tm, sb.writeset_tree_root, rc);
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check_writeset_tree(tm, wt, wt_rep);
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}
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era_array_reporter ea_rep(out);
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{
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uint32_traits::ref_counter rc;
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era_array ea(*tm, rc, sb.era_array_root, sb.nr_blocks);
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check_era_array(ea, sb.current_era, ea_rep);
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}
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return combine_errors(sb_rep.get_error(),
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combine_errors(wt_rep.get_error(),
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ea_rep.get_error()));
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}
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int check(string const &path, flags const &fs) {
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error_state err;
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struct stat info = guarded_stat(path);
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if (!S_ISREG(info.st_mode) && !S_ISBLK(info.st_mode)) {
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ostringstream msg;
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msg << path << ": " << "Not a block device or regular file";
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throw runtime_error(msg.str());
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}
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block_manager<>::ptr bm = open_bm(path, block_manager<>::READ_ONLY);
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err = metadata_check(bm, fs);
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return err == NO_ERROR ? 0 : 1;
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}
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int check_with_exception_handling(string const &path, flags const &fs) {
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int r;
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try {
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r = check(path, fs);
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} catch (std::exception &e) {
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if (!fs.quiet_)
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cerr << e.what() << endl;
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r = 1;
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}
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return r;
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}
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void usage(ostream &out, string const &cmd) {
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out << "Usage: " << cmd << " [options] {device|file}" << endl
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<< "Options:" << endl
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<< " {-q|--quiet}" << endl
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<< " {-h|--help}" << endl
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<< " {-V|--version}" << endl
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<< " {--super-block-only}" << endl;
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}
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}
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//----------------------------------------------------------------
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int era_check_main(int argc, char **argv)
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{
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int c;
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flags fs;
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const char shortopts[] = "qhV";
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const struct option longopts[] = {
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{ "quiet", no_argument, NULL, 'q' },
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{ "super-block-only", no_argument, NULL, 1 },
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, 'V' },
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{ NULL, no_argument, NULL, 0 }
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};
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while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
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switch(c) {
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case 1:
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fs.superblock_only_ = true;
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break;
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case 'h':
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usage(cout, basename(argv[0]));
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return 0;
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case 'q':
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fs.quiet_ = true;
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break;
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case 'V':
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cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
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return 0;
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default:
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usage(cerr, basename(argv[0]));
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return 1;
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}
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}
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if (argc == optind) {
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cerr << "No input file provided." << endl;
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usage(cerr, basename(argv[0]));
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return 1;
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}
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return check_with_exception_handling(argv[optind], fs);
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}
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base::command era::era_check_cmd("era_check", era_check_main);
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//----------------------------------------------------------------
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