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dmsetup: support printing full column names in report headings

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Add '--headings none|abbrev|full|0|1|2' command line option to select
the heading type.

  none|0   - no headings
  abbrev|1 - column name abbreviations
  full|2   - full column names (column names are equal to exact names
             that -o|--options also accepts to set report output)
This commit is contained in:
Peter Rajnoha 2023-08-22 11:19:05 +02:00
parent 14d0a9eef6
commit 5a1248f1d4
No known key found for this signature in database
GPG Key ID: E776664036DF84AB
3 changed files with 37 additions and 3 deletions
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1
WHATS_NEW_DM
View File

@ -1,5 +1,6 @@
Version 1.02.197 -
===================================
Add dmsetup --headings none|abbrev|full to set report headings type.
Add DM_REPORT_OUTPUT_FIELD_IDS_IN_HEADINGS to provide alternative headings.
Version 1.02.196 - 02nd August 2023

34
libdm/dm-tools/dmsetup.c
View File

@ -178,6 +178,7 @@ enum {
GID_ARG,
GROUP_ARG,
GROUP_ID_ARG,
HEADINGS_ARG,
HELP_ARG,
HISTOGRAM_ARG,
INACTIVE_ARG,
@ -4775,6 +4776,11 @@ static int _report_init(const struct command *cmd, const char *subcommand)
_report_type |= DR_STATS_META;
}
if (_switches[NOHEADINGS_ARG] && _switches[HEADINGS_ARG]) {
log_error("Only one of --headings and --noheadings permitted.");
return 0;
}
/* emulate old dmsetup behaviour */
if (_switches[NOHEADINGS_ARG]) {
separator = ":";
@ -4782,6 +4788,9 @@ static int _report_init(const struct command *cmd, const char *subcommand)
headings = 0;
}
if (_switches[HEADINGS_ARG])
headings = _int_args[HEADINGS_ARG];
if (_switches[UNBUFFERED_ARG])
buffered = 0;
@ -4848,8 +4857,11 @@ static int _report_init(const struct command *cmd, const char *subcommand)
if (buffered)
flags |= DM_REPORT_OUTPUT_BUFFERED;
if (headings)
if (headings) {
flags |= DM_REPORT_OUTPUT_HEADINGS;
if (headings == 2)
flags |= DM_REPORT_OUTPUT_FIELD_IDS_IN_HEADINGS;
}
if (field_prefixes)
flags |= DM_REPORT_OUTPUT_FIELD_NAME_PREFIX;
@ -6166,7 +6178,8 @@ static int _stats_help(CMD_ARGS);
* [--units <u>] [--programid <id>] [--regionid <id>]
* [-o <fields>] [-O|--sort <sort_fields>]
* [-S|--select <selection>] [--nameprefixes]
* [--noheadings] [--separator <separator>]
* [--noheadings|--headings none|abbrev|full|0|1|2]
* [--separator <separator>]
* [--allprograms|--programid id] [<device>...]
* ungroup --groupid <id> [--allprograms|--programid id]
* [--alldevices|<device>...]
@ -6336,7 +6349,8 @@ static void _dmsetup_usage(FILE *out)
" [--udevcookie <cookie>] [--noudevrules] [--noudevsync] [--verifyudev]\n"
" [-y|--yes] [--readahead {[+]<sectors>|auto|none}] [--retry]\n"
" [-c|-C|--columns] [-o <fields>] [-O|--sort <sort_fields>]\n"
" [-S|--select <selection>] [--nameprefixes] [--noheadings]\n"
" [-S|--select <selection>] [--nameprefixes]\n"
" [--noheadings|--headings none|abbrev|full|0|1|2]\n"
" [--separator <separator>]\n\n",
_base_commands[_base_command].name);
@ -6866,6 +6880,7 @@ static int _process_switches(int *argcp, char ***argvp, const char *dev_dir)
{"gid", 1, &ind, GID_ARG},
{"group", 0, &ind, GROUP_ARG},
{"groupid", 1, &ind, GROUP_ID_ARG},
{"headings", 1, &ind, HEADINGS_ARG},
{"help", 0, &ind, HELP_ARG},
{"histogram", 0, &ind, HISTOGRAM_ARG},
{"inactive", 0, &ind, INACTIVE_ARG},
@ -7170,6 +7185,19 @@ static int _process_switches(int *argcp, char ***argvp, const char *dev_dir)
_switches[EXEC_ARG]++;
_command_to_exec = optarg;
}
if (ind == HEADINGS_ARG) {
_switches[HEADINGS_ARG]++;
if (!strcasecmp(optarg, "none") || !strcmp(optarg, "0"))
_int_args[HEADINGS_ARG] = 0;
else if (!strcasecmp(optarg, "abbrev") || !strcmp(optarg, "1"))
_int_args[HEADINGS_ARG] = 1;
else if (!strcasecmp(optarg, "full") || !strcmp(optarg, "2"))
_int_args[HEADINGS_ARG] = 2;
else {
log_error("Unknown headings type.");
return 0;
}
}
if (ind == TARGET_ARG) {
_switches[TARGET_ARG]++;
_target = optarg;

5
man/dmsetup.8_main
View File

@ -91,6 +91,7 @@ dmsetup \(em low level logical volume management
. IR fields ]
. RB [ -O | --sort
. IR sort_fields ]
. RB [ --idsinheadings ]
. RB [ --nameprefixes ]
. RB [ --separator
. IR separator ]
@ -502,6 +503,10 @@ Specify the minor number.
When creating a device, don't load any table.
.
.TP
.B --idsinheadings
Show column identifiers instead of names in report output headings.
.
.TP
.B --nameprefixes
Add a "DM_" prefix plus the field name to the output. Useful with
\fB--noheadings\fP to produce a list of