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| author | Alasdair G Kergon <agk@redhat.com> | 2015-08-13 22:30:39 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2015-08-13 22:30:39 +0100 |
| commit | 043fb32c4b67d1456a77ab7caf0d077f419fae88 (patch) | |
| tree | 21b752686448ae51c0b71fafc15b91aa3a918ba4 /libdm/libdm-report.c | |
| parent | b3cd5d294503fcfa4b826456e17071a909d739e1 (diff) | |
| download | lvm2-043fb32c4b67d1456a77ab7caf0d077f419fae88.tar.gz | |
dmsetup: Restructure arg handling.
Introduce enums and global variables to record cleanly which command we
are processing and eliminate the historically inconsistent use of the
shifted argv[0] and fix assorted bugs discovered along the way.
Add dm_report_is_empty() to indicate there is no data awaiting output
and use this to suppress dmsetup report headings when no data is output
so we don't get a stray line saying 'Help' at the end of reporting help.
Define a report type (as the interface requires) so -o all selects
the right fields in splitname. (A fix for stats list will follow.)
Exit immediately if no device is supplied to dmsetup wipe_table instead
of hitting errors later and failing.
Adjust the command name printed in usage/help output to match command
invoked (most of the time).
Diffstat (limited to 'libdm/libdm-report.c')
| -rw-r--r-- | libdm/libdm-report.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libdm/libdm-report.c b/libdm/libdm-report.c index 17a7e13b2..84b129449 100644 --- a/libdm/libdm-report.c +++ b/libdm/libdm-report.c @@ -4305,6 +4305,11 @@ static int _output_as_columns(struct dm_report *rh) return 0; } +int dm_report_is_empty(struct dm_report *rh) +{ + return dm_list_empty(&rh->rows) ? 1 : 0; +} + int dm_report_output(struct dm_report *rh) { if (dm_list_empty(&rh->rows)) |