From eb159d13ee36a9ef2a83e3ab66f1b2ae1cc2d9f1 Mon Sep 17 00:00:00 2001 From: Luiz Capitulino Date: Fri, 28 May 2010 15:25:24 -0300 Subject: [PATCH] Monitor: handle optional '-' arg as a bool Historically, user monitor arguments beginning with '-' (eg. '-f') were passed as integers down to handlers. I've maintained this behavior in the new monitor because we didn't have a boolean type at the very beginning of QMP. Today we have it and this behavior is causing trouble to QMP's argument checker. This commit fixes the problem by doing the following changes: 1. User Monitor Before: the optional arg was represented as a QInt, we'd pass 1 down to handlers if the user specified the argument or 0 otherwise This commit: the optional arg is represented as a QBool, we pass true down to handlers if the user specified the argument, otherwise _nothing_ is passed 2. QMP Before: the client was required to pass the arg as QBool, but we'd convert it to QInt internally. If the argument wasn't passed, we'd pass 0 down This commit: still require a QBool, but doesn't do any conversion and doesn't pass any default value 3. Convert existing handlers (do_eject()/do_migrate()) to the new way Before: Both handlers would expect a QInt value, either 0 or 1 This commit: Change the handlers to accept a QBool, they handle the following cases: A) true is passed: the option is enabled B) false is passed: the option is disabled C) nothing is passed: option not specified, use default behavior Signed-off-by: Luiz Capitulino --- blockdev.c | 2 +- migration.c | 16 +++++++--------- monitor.c | 17 +++-------------- 3 files changed, 11 insertions(+), 24 deletions(-) diff --git a/blockdev.c b/blockdev.c index 3b8c606..4dcfad8 100644 --- a/blockdev.c +++ b/blockdev.c @@ -521,7 +521,7 @@ static int eject_device(Monitor *mon, BlockDriverState *bs, int force) int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data) { BlockDriverState *bs; - int force = qdict_get_int(qdict, "force"); + int force = qdict_get_try_bool(qdict, "force", 0); const char *filename = qdict_get_str(qdict, "device"); bs = bdrv_find(filename); diff --git a/migration.c b/migration.c index b49964c..650eb78 100644 --- a/migration.c +++ b/migration.c @@ -75,7 +75,9 @@ int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data) { MigrationState *s = NULL; const char *p; - int detach = qdict_get_int(qdict, "detach"); + int detach = qdict_get_try_bool(qdict, "detach", 0); + int blk = qdict_get_try_bool(qdict, "blk", 0); + int inc = qdict_get_try_bool(qdict, "inc", 0); const char *uri = qdict_get_str(qdict, "uri"); if (current_migration && @@ -86,21 +88,17 @@ int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data) if (strstart(uri, "tcp:", &p)) { s = tcp_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); #if !defined(WIN32) } else if (strstart(uri, "exec:", &p)) { s = exec_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); } else if (strstart(uri, "unix:", &p)) { s = unix_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); } else if (strstart(uri, "fd:", &p)) { s = fd_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); #endif } else { monitor_printf(mon, "unknown migration protocol: %s\n", uri); diff --git a/monitor.c b/monitor.c index 58b060b..568bfb2 100644 --- a/monitor.c +++ b/monitor.c @@ -3565,7 +3565,7 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon, case '-': { const char *tmp = p; - int has_option, skip_key = 0; + int skip_key = 0; /* option */ c = *typestr++; @@ -3573,7 +3573,6 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon, goto bad_type; while (qemu_isspace(*p)) p++; - has_option = 0; if (*p == '-') { p++; if(c != *p) { @@ -3589,11 +3588,11 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon, if(skip_key) { p = tmp; } else { + /* has option */ p++; - has_option = 1; + qdict_put(qdict, key, qbool_from_int(1)); } } - qdict_put(qdict, key, qint_from_int(has_option)); } break; default: @@ -3985,11 +3984,6 @@ static int check_opt(const CmdArgs *cmd_args, const char *name, QDict *args) return -1; } - if (cmd_args->type == '-') { - /* handlers expect a value, they need to be changed */ - qdict_put(args, name, qint_from_int(0)); - } - return 0; } @@ -4062,11 +4056,6 @@ static int check_arg(const CmdArgs *cmd_args, QDict *args) qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "bool"); return -1; } - if (qobject_type(value) == QTYPE_QBOOL) { - /* handlers expect a QInt, they need to be changed */ - qdict_put(args, name, - qint_from_int(qbool_get_int(qobject_to_qbool(value)))); - } break; case 'O': default: -- 2.7.4