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Commit Graph

180 Commits

Author SHA1 Message Date
Zdenek Kabelac
fbdd26a4a3 device_mapper: solve no devices path
Malloc needs to use sane value when names would be NULL.
Also for devices without 'uuid' return empty string instead of NULL.
2024-05-27 21:33:59 +02:00
Zdenek Kabelac
93115ef91d libdm: drop allocation
Use structure allocated on local stack.
2024-05-27 15:35:57 +02:00
Zdenek Kabelac
1712845ab5 device_mapper: use const for this API
Allow using constified version of devs_list.
Internal loop does not need to modify anythin in this stucture.
2024-05-27 15:35:17 +02:00
Zdenek Kabelac
36691b9844 device_mapper: add dm_device_list_find_by_dev
Introduce function to find device's name and uuid for
a given major:minor.

This information is cached with dm_device_list which reads all the
info from single ioctl(DM_DEVICE_LIST).
Lvm keeps major:minor name & uuid for active devices in the system.
2024-05-27 15:34:16 +02:00
Zdenek Kabelac
dd78573073 libdm: parse only block section for proc_devices
Check for begining of 'B'lock section in /proc/devices file
before starting to sscanf() for major.
2024-05-27 15:16:25 +02:00
Zdenek Kabelac
32b2776afc makefiles: use properly defined varitable
Variable used for tracking dependencies is USE_TRACKING.
2024-05-14 17:59:26 +02:00
Zdenek Kabelac
7d22be22d9 gcc: use proper commnent 2024-05-14 17:59:26 +02:00
Zdenek Kabelac
a86fb27607 cov: ensure pointer has defined value
Add initialization of 'fin' pointer.
2024-05-13 17:32:46 +02:00
Zdenek Kabelac
026344e8cc cleanup: local const arrays
No need for relocation entries for locally used arrays.
2024-05-13 12:58:37 +02:00
Zdenek Kabelac
d25c43c8cd cleanup: remove unuable code path
Eliminate some ancient unreachable code
for historical version of libdm.
2024-05-13 12:58:37 +02:00
Zdenek Kabelac
00cfe3a24e libdm: reapply "fix condition"
This reverts commit d16a8f80e9.
So the correction was OK, however we missed to fix also
cut&paste bug here - as the second check should be
actually checking  field->type.
2024-05-10 14:24:17 +02:00
Zdenek Kabelac
2f3fcbd245 libdm: fix invalid conversion
Previous commit missed to also add one to added 'len'.
2024-05-08 10:16:01 +02:00
Zdenek Kabelac
f0d3d0482e cov: enum health status
Cleanly map health char status to enum.
2024-05-08 01:55:21 +02:00
Zdenek Kabelac
f6e0e7b9aa cov: sanitize input buffer
Make coverity aware the input line is legit.
Eventually add more sanitize functionality.
2024-05-08 01:55:21 +02:00
Zdenek Kabelac
4761753a6f cov: replace strcpy with memcpy 2024-05-08 01:55:21 +02:00
Zdenek Kabelac
04b407674c cov: use sscanf buffer size limits
String parsing with buffer size limit.
2024-05-08 01:55:21 +02:00
Zdenek Kabelac
e56e7ed533 libdm: unlink checks for ENOENT 2024-05-08 01:55:21 +02:00
Zdenek Kabelac
a763420786 libdm: use literal for error message
Use literals for printf messages.
2024-05-08 01:55:20 +02:00
Zdenek Kabelac
d16a8f80e9 Revert "libdm: fix condition"
This reverts commit 2a1e200f7a.

Breaks some test - more analysis is needed.
2024-05-04 01:37:51 +02:00
Zdenek Kabelac
e0bd66b73a const: use common error path
Instead of defining  _field_selection_value_alloc_failed_msg[],
use common error path code for printing field_id.
2024-05-04 01:01:57 +02:00
Zdenek Kabelac
c9f9744f50 const: libdm cmd_data_v4 2024-05-04 01:01:57 +02:00
Zdenek Kabelac
9247e754fe const: libdm tok_op 2024-05-04 01:01:57 +02:00
Zdenek Kabelac
e6f46fafe7 const: use arrays of strings 2
Next set of changes.
2024-05-04 01:01:57 +02:00
Zdenek Kabelac
efe2005022 const: drop static keyword
We don't need relocatable space to store 'const' number.
2024-05-04 01:01:57 +02:00
Zdenek Kabelac
abf7c40185 const: static array
Such array can be stored  in   .rodata   section.
2024-05-04 01:01:57 +02:00
Zdenek Kabelac
2a1e200f7a libdm: fix condition
When we switch supported_reserved_types_with_range to const
gcc repots this problem:

 warning: ‘and’ of mutually exclusive equal-tests is always 0
 !(iter->type & supported_reserved_types_with_range))) {

It's not clear from the history what was the actual intention of this
internal error test, let's assume the check wanted to make sure
that when DM_REPORT_FIELD_RESERVED_VALUE_RANGE is set,
some other fields from supported_reserved_types_with_range set
are also selected.
2024-05-04 00:58:44 +02:00
Zdenek Kabelac
9b2f9d64c0 libdm: ensure suffixes list elements are const
This was rather API mistake - the internal of libdm
do handle suffixes list as const string, just the API
was only using  'const char **'.

So the user may pass safely casted 'const char * const`.
2024-05-04 00:57:52 +02:00
Zdenek Kabelac
fa62397ff8 cov: mask false positive
This code is somewhat complex and involves recursion and pointer
shuffling which confuses coverity here.

Let's add masking comment for this warning as there is no double
free in this code.
2024-04-10 00:03:09 +02:00
Zdenek Kabelac
e7a54c1a50 cov: use safer version with size limitation
Although there is likely not much risk of having chance of overwritting
given buffers use safer variant.
Use dm_strncpy() when just copying %s.
2024-04-10 00:03:09 +02:00
Zdenek Kabelac
3ce83f923d cov: extra pointer validation
Add few more internal errors to enusure there is no use of NULL pointers
along the code path.
2024-04-10 00:03:09 +02:00
Zdenek Kabelac
22a0cfdc05 cov: use memccpy
When we want to copy string which may not be null terminated,
replace strncpy with more correct memccpy.
2024-04-10 00:03:09 +02:00
Zdenek Kabelac
88ad83e3d6 makefiles: use SHOW 2024-04-08 14:52:23 +02:00
Zdenek Kabelac
d490572410 gcc: clear some complains
Use dm_strncpy() were possible to get rid of gcc compile warnings.
2024-04-08 14:52:23 +02:00
Zdenek Kabelac
a98709aeae cov: validate count is bigger then 0
To avoid teoretical underflow...
2024-03-29 01:36:48 +01:00
Zdenek Kabelac
93a633092a cov: store 64b flags
Alhtough no target is currently using that many bits for their flags,
preserve the size for loaded segment internally.
2024-03-29 01:36:48 +01:00
Zdenek Kabelac
0dbd90d74e gcc: match signed integers 2024-03-27 01:11:00 +01:00
Zdenek Kabelac
50ad27a4ab reporting: reuse existing _get_field
Use already existing _get_field() function that also
slightly optimizes 'strlen()' usage.
2024-03-25 11:05:05 +01:00
Zdenek Kabelac
2eff6e1974 raid: update dm_get_status_raid
Handle mismatch of reported 'dm raid' status, where the active
raid LV can be actually showing higher numebr of raid leg devices,
that the number of shown status characters.

This can happen if the raid leg is dropped during initial
resynchronization.
2024-03-25 11:05:05 +01:00
Zdenek Kabelac
68fdae1184 debug: enhace device_mapper debug log for dm tree 2024-03-17 13:17:53 +01:00
Zdenek Kabelac
3bd9f936da thin: delayed resume for LV conversion
When we have some existing LV and this LV is being converted to
external origin - during the DM table manipulation there is a short
moment when the LV is being 'resumed' as 'read-only' volume
while still being live as 'rw' volume i.e. we could have had
a single thin LV active twice.

To avoid such weird scenarios of dual access to a same volume, we
just postpone a resume until a moment, where the existing volume
is already suspended thus no I/O can be in flight to such device.

Note: however there is slight catch - that we now have basically
a different 'risk' case where a resume of such i.e. new external
origin LV might fail and we are already in suspend tree state -
resolving error path in this situation is untrivial as well...
2024-03-17 13:17:53 +01:00
Zdenek Kabelac
3f084b06e9 device_mapper: raid status handle all a chars
When getting raid status from some older kernels, we may get an 'a'
for 'A' leg when doing initial synchronization.
This may prohibit removal of newly synchronized leg until synchronization
is finished.
So in this case change the status to look like being reported
from a newer kernel version.
2023-10-31 18:52:05 +01:00
Peter Rajnoha
c36e012926
libdm: report: fix invalid JSON if using DM_REPORT_OUTPUT_MULTIPLE_TIMES and selection
When reporting in JSON format, we need to be able to find the 'last
displayed row', not just 'last row' as we did before. This is used
to decide whether to put the JSON_SEPARATOR (the ',' character)
between the lines when reporting in JSON format.

This is mainly important in case we use a combination of JSON format
and a report marked with DM_REPORT_OUTPUT_MULTIPLE_TIMES flag.
Such report may be reused several times with different selection
criteria each time. In that case, the report always contains all lines
in memory, even though some of them do not need to pass the selection
criteria that are currently used.

Without DM_REPORT_OUTPUT_MULTIPLE_TIMES flag, the report only contains
the lines that have passed the selection criteria, so the this wasn't
an issue in this case.

Fix suggested by Lars Ellenberg and reported here: https://github.com/lvmteam/lvm2/issues/130
2023-10-23 14:18:21 +02:00
Zdenek Kabelac
fb124f0839 device_mapper: pair with libdm _create_and_load_v4
Apply same enhancement also for internal device mapper library
from the commit: 25ef7a7b1a.
2023-10-13 14:24:49 +02:00
Zdenek Kabelac
e930ee93f7 debug: correct level
No error for just tracing message.
2023-09-26 01:23:00 +02:00
Zdenek Kabelac
984c024ef2 typos: misc 2023-09-19 14:54:51 +02:00
Peter Rajnoha
12b60e7c25
libdm: report: support reporting field IDs in headings
Add new DM_REPORT_OUTPUT_FIELD_IDS_IN_HEADINGS report output flag.
If enabled, column IDs are reported instead of column names in report
headings.

The 'column IDs' are IDs as found in 'const struct dm_report_field_type *fields'
array that is passed during report initialization (that is, a call to
dm_report_init/dm_report_init_with_selection). In this case, the 'id'
dm_report_field_type member is used instead of the 'heading' member.
2023-08-28 15:44:57 +02:00
Zdenek Kabelac
96123b9059 cleanup: use spelling synchronize
Use single spelling form for synchronize.
2023-07-10 17:13:32 +02:00
Zdenek Kabelac
b90c5d6015 vdo: support version 4
Properly parse VDO volumes formatted with geometry block version 4.0.
2023-07-10 17:13:32 +02:00
Zdenek Kabelac
6ff65e6755 vdo: check_point_frequence is unused option
This vdo parameter existed in the early stage of integration of vdo into lvm2,
but later it's been removed from vdoformat tool - so actually if
there would be any non-zero value it would cause error on lvcreate.
Option was not stored on disk in lvm2 metadata.

Remove this vdo parameter from lvm2 sources.

(Although this vdo parameter will be still accepted on cmdline through
 --vdosettings option, but it will be ignored.)
2023-06-29 13:10:42 +02:00
Zdenek Kabelac
00633f8b66 vdo: fix and enhance vdo metadata reader
Improve metadata parser to handle volume_geometry bio_offset,
which needs to be substracted from 'region' start_block when present.

This bio_offset block is non-zero i.e. with converted VDO volumes.

Also fix some converted structure value (but they are not in use).
2023-06-09 18:01:16 +02:00