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cleanup: toolcontext: make cmd_context more readable

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Just shuffle the items and put them into logical groups so it's
visible at first sight what each group contains - it makes it a bit
easier to make heads and tails of the whole cmd_context monster.
This commit is contained in:
Peter Rajnoha 2015-07-30 16:01:02 +02:00
parent c0629c13fe
commit e6834b3237
1 changed files with 79 additions and 55 deletions
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116
lib/commands/toolcontext.h
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@ -69,29 +69,50 @@ struct cmd_context_initialized_parts {
/* FIXME Split into tool & library contexts */
/* command-instance-related variables needed by library */
struct cmd_context {
struct dm_pool *libmem; /* For permanent config data */
struct dm_pool *mem; /* Transient: Cleared between each command */
/*
* Memory handlers.
*/
struct dm_pool *libmem; /* for permanent config data */
struct dm_pool *mem; /* transient: cleared between each command */
const struct format_type *fmt; /* Current format to use by default */
struct format_type *fmt_backup; /* Format to use for backups */
struct dm_list formats; /* Available formats */
struct dm_list segtypes; /* Available segment types */
const char *system_id;
const char *hostname;
const char *kernel_vsn;
unsigned rand_seed;
char *linebuffer;
/*
* Command line and arguments.
*/
const char *cmd_line;
struct command *command;
char **argv;
struct arg_values *arg_values;
struct dm_list arg_value_groups;
/*
* Format handlers.
*/
const struct format_type *fmt; /* current format to use by default */
struct format_type *fmt_backup; /* format to use for backups */
struct dm_list formats; /* available formats */
struct dm_list segtypes; /* available segment types */
/*
* Machine and system identification.
*/
const char *system_id;
const char *hostname;
const char *kernel_vsn;
/*
* Device identification.
*/
struct dev_types *dev_types; /* recognized extra device types. */
/*
* Initialization state.
*/
struct cmd_context_initialized_parts initialized;
unsigned is_long_lived:1; /* Optimises persistent_filter handling */
/*
* Switches.
*/
unsigned is_long_lived:1; /* optimises persistent_filter handling */
unsigned handles_missing_pvs:1;
unsigned handles_unknown_segments:1;
unsigned use_linear_target:1;
@ -102,11 +123,8 @@ struct cmd_context {
unsigned report_binary_values_as_numeric:1;
unsigned metadata_read_only:1;
unsigned ignore_clustered_vgs:1;
unsigned threaded:1; /* Set if running within a thread e.g. clvmd */
const char *time_format;
unsigned independent_metadata_areas:1; /* Active formats have MDAs outside PVs */
unsigned threaded:1; /* set if running within a thread e.g. clvmd */
unsigned independent_metadata_areas:1; /* active formats have MDAs outside PVs */
unsigned unknown_system_id:1;
unsigned include_foreign_vgs:1; /* report/display cmds can reveal foreign VGs */
unsigned include_shared_vgs:1; /* report/display cmds can reveal lockd VGs */
@ -118,52 +136,58 @@ struct cmd_context {
unsigned lockd_vg_default_sh:1;
unsigned lockd_vg_enforce_sh:1;
struct dev_types *dev_types;
/*
* Use of filters depends on whether lvmetad is used or not:
*
* - if lvmetad is used:
* - cmd->lvmetad_filter used when scanning devices for lvmetad
* - cmd->filter used when processing lvmetad responses
* - cmd->full_filter used for remaining situations
*
* - if lvmetad is not used:
* - cmd->lvmetad_filter is NULL
* - cmd->filter == cmd->full_filter used for all situations
*
* Filtering.
*/
struct dev_filter *lvmetad_filter;
struct dev_filter *filter;
struct dev_filter *full_filter;
struct dev_filter *lvmetad_filter; /* pre-lvmetad filter chain */
struct dev_filter *filter; /* post-lvmetad filter chain */
struct dev_filter *full_filter; /* lvmetad_filter + filter */
int dump_filter; /* Dump filter when exiting? */
/*
* Configuration.
*/
struct dm_list config_files; /* master lvm config + any existing tag configs */
struct profile_params *profile_params; /* profile handling params including loaded profile configs */
struct dm_config_tree *cft; /* the whole cascade: CONFIG_STRING -> CONFIG_PROFILE -> CONFIG_FILE/CONFIG_MERGED_FILES */
struct dm_hash_table *cft_def_hash; /* config definition hash used for validity check (item type + item recognized) */
struct config_info default_settings; /* selected settings with original default/configured value which can be changed during cmd processing */
struct config_info current_settings; /* may contain changed values compared to default_settings */
/* selected settings with original default/configured value which can be changed during cmd processing */
struct config_info default_settings;
/* may contain changed values compared to default_settings */
struct config_info current_settings;
/*
* Archives and backups.
*/
struct archive_params *archive_params;
struct backup_params *backup_params;
const char *stripe_filler;
/* List of defined tags */
struct dm_list tags;
/*
* Host tags.
*/
struct dm_list tags; /* list of defined tags */
const char *report_list_item_separator;
int hosttags;
const char *lib_dir; /* Cache value global/library_dir */
/*
* Paths.
*/
const char *lib_dir; /* cache value global/library_dir */
char system_dir[PATH_MAX];
char dev_dir[PATH_MAX];
char proc_dir[PATH_MAX];
char display_buffer[NAME_LEN * 10]; /* Ring buffer for upto 10 longest vg/lv names */
unsigned display_lvname_idx; /* Index to ring buffer */
/*
* Buffers.
*/
char display_buffer[NAME_LEN * 10]; /* ring buffer for upto 10 longest vg/lv names */
unsigned display_lvname_idx; /* index to ring buffer */
char *linebuffer;
/*
* Others - unsorted.
*/
const char *time_format;
unsigned rand_seed;
};
/*