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qemu-ga: add a whitelist for fsfreeze-safe commands

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Currently we rely on fsfreeze/thaw commands disabling/enabling logging
then having other commands check whether logging is disabled to avoid
executing if they aren't safe for running while a filesystem is frozen.

Instead, have an explicit whitelist of fsfreeze-safe commands, and
consolidate logging and command enablement/disablement into a pair
of helper functions: ga_set_frozen()/ga_unset_frozen()

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Michael Roth 2012-04-17 19:01:45 -05:00
parent 9e8aded432
commit f22d85e9e6
5 changed files with 140 additions and 33 deletions
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qapi/qmp-core.h
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@ -38,6 +38,7 @@ void qmp_register_command(const char *name, QmpCommandFunc *fn);
QmpCommand *qmp_find_command(const char *name);
QObject *qmp_dispatch(QObject *request);
void qmp_disable_command(const char *name);
void qmp_enable_command(const char *name);
bool qmp_command_is_enabled(const char *name);
char **qmp_get_command_list(void);