From 4897093455a2bf08f3db3a1132cc2f6f5484d77c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 08:03:02 +0200 Subject: Adding upstream version 1:2.6.4. Signed-off-by: Daniel Baumann --- tools/nfsdclddb/Makefile.am | 13 + tools/nfsdclddb/Makefile.in | 621 ++++++++++++++++++++++++++++++++++++++++++ tools/nfsdclddb/nfsdclddb.man | 83 ++++++ tools/nfsdclddb/nfsdclddb.py | 266 ++++++++++++++++++ 4 files changed, 983 insertions(+) create mode 100644 tools/nfsdclddb/Makefile.am create mode 100644 tools/nfsdclddb/Makefile.in create mode 100644 tools/nfsdclddb/nfsdclddb.man create mode 100644 tools/nfsdclddb/nfsdclddb.py (limited to 'tools/nfsdclddb') diff --git a/tools/nfsdclddb/Makefile.am b/tools/nfsdclddb/Makefile.am new file mode 100644 index 0000000..18263fb --- /dev/null +++ b/tools/nfsdclddb/Makefile.am @@ -0,0 +1,13 @@ +## Process this file with automake to produce Makefile.in +PYTHON_FILES = nfsdclddb.py + +man8_MANS = nfsdclddb.man + +EXTRA_DIST = $(man8_MANS) $(PYTHON_FILES) + +all-local: $(PYTHON_FILES) + +install-data-hook: + $(INSTALL) -m 755 nfsdclddb.py $(DESTDIR)$(sbindir)/nfsdclddb + +MAINTAINERCLEANFILES=Makefile.in diff 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install-info install-info-am install-man install-man8 \ + install-pdf install-pdf-am install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags-am uninstall uninstall-am uninstall-man uninstall-man8 + +.PRECIOUS: Makefile + + +all-local: $(PYTHON_FILES) + +install-data-hook: + $(INSTALL) -m 755 nfsdclddb.py $(DESTDIR)$(sbindir)/nfsdclddb + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/tools/nfsdclddb/nfsdclddb.man b/tools/nfsdclddb/nfsdclddb.man new file mode 100644 index 0000000..8ec7b18 --- /dev/null +++ b/tools/nfsdclddb/nfsdclddb.man @@ -0,0 +1,83 @@ +.\" +.\" nfsdclddb(8) +.\" +.TH nfsdclddb 8 "07 Aug 2019" +.SH NAME +nfsdclddb \- Tool for manipulating the nfsdcld sqlite database +.SH SYNOPSIS +.B nfsdclddb +.RB [ \-h | \-\-help ] +.P +.B nfsdclddb +.RB [ \-p | \-\-path +.IR dbpath ] +.B fix-table-names +.RB [ \-h | \-\-help ] +.P +.B nfsdclddb +.RB [ \-p | \-\-path +.IR dbpath ] +.B downgrade-schema +.RB [ \-h | \-\-help ] +.RB [ \-v | \-\-version +.IR to-version ] +.P +.B nfsdclddb +.RB [ \-p | \-\-path +.IR dbpath ] +.B print +.RB [ \-h | \-\-help ] +.RB [ \-s | \-\-summary ] +.P + +.SH DESCRIPTION +.RB "The " nfsdclddb " command is provided to perform some manipulation of the nfsdcld sqlite database schema and to print the contents of the database." +.SS Sub-commands +Valid +.B nfsdclddb +subcommands are: +.IP "\fBfix-table-names\fP" +.RB "A previous version of " nfsdcld "(8) contained a bug that corrupted the reboot epoch table names. This sub-command will fix those table names." +.IP "\fBdowngrade-schema\fP" +Downgrade the database schema. Currently the schema can only to downgraded from version 4 to version 3. +.IP "\fBprint\fP" +Display the contents of the database. Prints the schema version and the values of the current and recovery epochs. If the +.BR \-s | \-\-summary +option is not given, also prints the clients in the reboot epoch tables. +.SH OPTIONS +.SS Options valid for all sub-commands +.TP +.B \-h, \-\-help +Show the help message and exit +.TP +\fB\-p \fIdbpath\fR, \fB\-\-path \fIdbpath\fR +Open the sqlite database located at +.I dbpath +instead of +.IR /var/lib/nfs/nfsdcld/main.sqlite ". " +This is mainly for testing purposes. +.SS Options specific to the downgrade-schema sub-command +.TP +\fB\-v \fIto-version\fR, \fB\-\-version \fIto-version\fR +The schema version to downgrade to. Currently the schema can only be downgraded to version 3. +.SS Options specific to the print sub-command +.TP +.B \-s, \-\-summary +Do not list the clients in the reboot epoch tables in the output. +.SH NOTES +The +.B nfsdclddb +command will not allow the +.B fix-table-names +or +.B downgrade-schema +subcommands to be used if +.BR nfsdcld (8) +is running. +.SH FILES +.TP +.B /var/lib/nfs/nfsdcld/main.sqlite +.SH SEE ALSO +.BR nfsdcld (8) +.SH AUTHOR +Scott Mayhew diff --git a/tools/nfsdclddb/nfsdclddb.py b/tools/nfsdclddb/nfsdclddb.py new file mode 100644 index 0000000..8a66131 --- /dev/null +++ b/tools/nfsdclddb/nfsdclddb.py @@ -0,0 +1,266 @@ +#!/usr/bin/python3 +"""Tool for manipulating the nfsdcld sqlite database +""" + +__copyright__ = """ +Copyright (C) 2019 Scott Mayhew + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +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., 51 Franklin Street, Fifth Floor, Boston, +MA 02110-1301, USA. +""" + +import argparse +import os +import sqlite3 +import sys + + +class CldDb(): + def __init__(self, path): + self.con = sqlite3.connect(path) + self.con.row_factory = sqlite3.Row + for row in self.con.execute('select value from parameters ' + 'where key = "version"'): + self.version = int(row['value']) + for row in self.con.execute('select * from grace'): + self.current = int(row['current']) + self.recovery = int(row['recovery']) + + def __del__(self): + self.con.close() + + def __str__(self): + return ('Schema version: {self.version} ' + 'current epoch: {self.current} ' + 'recovery epoch: {self.recovery}'.format(self=self)) + + def _print_clients(self, epoch): + if epoch: + for row in self.con.execute('select * from "rec-{:016x}"' + .format(epoch)): + if self.version >= 4: + if row['princhash'] is not None: + princhash = row['princhash'].hex() + else: + princhash = "(null)" + print('id = {}, princhash = {}' + .format(row['id'].decode(), princhash)) + else: + print('id = {}'.format(row['id'].decode())) + + def print_current_clients(self): + print('Clients in current epoch:') + self._print_clients(self.current) + + def print_recovery_clients(self): + if self.recovery: + print('Clients in recovery epoch:') + self._print_clients(self.recovery) + + def check_bad_table_names(self): + bad_names = [] + for row in self.con.execute('select name from sqlite_master ' + 'where type = "table" ' + 'and name like "%rec-%" ' + 'and length(name) < 20'): + bad_names.append(row['name']) + return bad_names + + def fix_bad_table_names(self): + try: + self.con.execute('begin exclusive transaction') + bad_names = self.check_bad_table_names() + for bad_name in bad_names: + epoch = int(bad_name.split('-')[1], base=16) + if epoch == self.current or epoch == self.recovery: + if epoch == self.current: + which = 'current' + else: + which = 'recovery' + print('found invalid table name {} for {} epoch' + .format(bad_name, which)) + self.con.execute('alter table "{}" ' + 'rename to "rec-{:016x}"' + .format(bad_name, epoch)) + print('renamed to rec-{:016x}'.format(epoch)) + else: + print('found invalid table name {} for unknown epoch {}' + .format(bad_name, epoch)) + self.con.execute('drop table "{}"'.format(bad_name)) + print('dropped table {}'.format(bad_name)) + except sqlite3.Error: + self.con.rollback() + else: + self.con.commit() + + def has_princ_data(self): + if self.version < 4: + return False + for row in self.con.execute('select count(*) ' + 'from "rec-{:016x}" ' + 'where princhash not null' + .format(self.current)): + count = row[0] + if self.recovery: + for row in self.con.execute('select count(*) ' + 'from "rec-{:016x}" ' + 'where princhash not null' + .format(self.current)): + count = count + row[0] + if count: + return True + return False + + def _downgrade_table_v4_to_v3(self, epoch): + if not self.con.in_transaction: + raise sqlite3.Error + try: + self.con.execute('create table "new_rec-{:016x}" ' + '(id blob primary key)'.format(epoch)) + self.con.execute('insert into "new_rec-{:016x}" ' + 'select id from "rec-{:016x}"' + .format(epoch, epoch)) + self.con.execute('drop table "rec-{:016x}"'.format(epoch)) + self.con.execute('alter table "new_rec-{:016x}" ' + 'rename to "rec-{:016x}"' + .format(epoch, epoch)) + except sqlite3.Error: + raise + + def downgrade_schema_v4_to_v3(self): + try: + self.con.execute('begin exclusive transaction') + for row in self.con.execute('select value from parameters ' + 'where key = "version"'): + version = int(row['value']) + if version != self.version: + raise sqlite3.Error + for row in self.con.execute('select * from grace'): + current = int(row['current']) + recovery = int(row['recovery']) + if current != self.current: + raise sqlite3.Error + if recovery != self.recovery: + raise sqlite3.Error + self._downgrade_table_v4_to_v3(current) + if recovery: + self._downgrade_table_v4_to_v3(recovery) + self.con.execute('update parameters ' + 'set value = "3" ' + 'where key = "version"') + self.version = 3 + except sqlite3.Error: + self.con.rollback() + print('Downgrade failed') + else: + self.con.commit() + print('Downgrade successful') + + +def nfsdcld_active(): + rc = os.system('ps -C nfsdcld >/dev/null 2>/dev/null') + if rc == 0: + return True + return False + + +def fix_table_names_command(db, args): + if nfsdcld_active(): + print('Warning: nfsdcld is running!') + ans = input('Continue? ') + if ans.lower() not in ['y', 'yes']: + print('Operation canceled.') + return + bad_names = db.check_bad_table_names() + if not bad_names: + print('No invalid table names found.') + return + db.fix_bad_table_names() + + +def downgrade_schema_command(db, args): + if nfsdcld_active(): + print('Warning: nfsdcld is running!') + ans = input('Continue? ') + if ans.lower() not in ['y', 'yes']: + print('Operation canceled') + return + if db.version != 4: + print('Cannot downgrade database from schema version {}.' + .format(db.version)) + return + if args.version != 3: + print('Cannot downgrade to version {}.'.format(args.version)) + return + bad_names = db.check_bad_table_names() + if bad_names: + print('Invalid table names detected.') + print('Please run "{} fix-table-names" before downgrading the schema.' + .format(sys.argv[0])) + return + if db.has_princ_data(): + print('Warning: database has principal data, which will be erased.') + ans = input('Continue? ') + if ans.lower() not in ['y', 'yes']: + print('Operation canceled') + return + db.downgrade_schema_v4_to_v3() + + +def print_command(db, args): + print(str(db)) + if not args.summary: + bad_names = db.check_bad_table_names() + if bad_names: + print('Invalid table names detected.') + print('Please run "{} fix-table-names".'.format(sys.argv[0])) + return + db.print_current_clients() + db.print_recovery_clients() + + +def main(): + parser = argparse.ArgumentParser() + parser.add_argument('-p', '--path', + default='/var/lib/nfs/nfsdcld/main.sqlite', + help='path to the database ' + '(default: /var/lib/nfs/nfsdcld/main.sqlite)') + subparsers = parser.add_subparsers(help='sub-command help') + fix_parser = subparsers.add_parser('fix-table-names', + help='fix invalid table names') + fix_parser.set_defaults(func=fix_table_names_command) + downgrade_parser = subparsers.add_parser('downgrade-schema', + help='downgrade database schema') + downgrade_parser.add_argument('-v', '--version', type=int, choices=[3], + default=3, + help='version to downgrade to') + downgrade_parser.set_defaults(func=downgrade_schema_command) + print_parser = subparsers.add_parser('print', + help='print database info') + print_parser.add_argument('-s', '--summary', default=False, + action='store_true', + help='print summary only') + print_parser.set_defaults(func=print_command) + args = parser.parse_args() + if not os.path.exists(args.path): + return parser.print_usage() + clddb = CldDb(args.path) + return args.func(clddb, args) + + +if __name__ == '__main__': + if len(sys.argv) == 1: + sys.argv.extend(['print', '--summary']) + main() -- cgit v1.2.3