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Commit Graph

1424 Commits

Author SHA1 Message Date
Zdenek Kabelac
a3352f08f6 dmsetup: fix measure handling
Previous patch f853a1bc7a enabled
ima measurement unconditionally for every status call,
but it needs to be set only for 'dmsetup measure' command.
2021-09-27 18:45:25 +02:00
Alasdair G Kergon
f853a1bc7a libdm: dmsetup measure support for IMA
Add support for DM_IMA_MEASUREMENT_FLAG with
DM_TABLE_STATUS_CMD.

This feature requires DM version 4.45  (5.15+ kernels)
2021-09-23 16:49:28 +02:00
Zdenek Kabelac
566c2f1828 libdm: support DM_NAME_LIST_FLAG
Kernel patch 8b638081bd4520f63db1defc660666ec5f65bc15
introduced support to return UUID in DM_LIST_DEVICES_CMD.

Useful when asking for UUID of each device where the list
could be now returned directly with NAME && UUID for each device.

Returning UUID is done in backward-compatible way. There's one unused
32-bit word value after the event number. This patch sets the bit
DM_NAME_LIST_FLAG_HAS_UUID if UUID is present and
DM_NAME_LIST_FLAG_DOESNT_HAVE_UUID if it isn't (if none of these bits is
set, then we have an old kernel that doesn't support returning UUIDs). The
UUID is stored after this word. The 'next' value is updated to point after
the UUID, so that old version of libdevmapper will skip the UUID without
attempting to interpret it.
2021-09-23 16:49:14 +02:00
Zdenek Kabelac
9eafd44734 gcc: use more zero length arrays
Define last array struct member with zero size.
2021-09-22 17:18:50 +02:00
Zdenek Kabelac
b0d40109a6 cov: ignore leak of fd descriptor
There is no 'fd' leak.
2021-09-21 21:03:47 +02:00
Zdenek Kabelac
2e990d1fec gcc: avoid warns on missing braces with older version 2021-09-20 16:11:49 +02:00
Zdenek Kabelac
1b52451996 cov: mask some warning about leakage
Mask false-positive leak report.
2021-09-20 14:26:09 +02:00
Zdenek Kabelac
548c69f581 cov: hide reports from optarg being NULL
It's basically irrelavant which value we assing to optarg,
since it's set by getopt() function, but Coverity tool
is incorrectly reporting possibly dereference of NULL.
2021-09-20 14:26:09 +02:00
Zdenek Kabelac
ebd150366f cov: add explicit NULL pointer check
Make obvious to coverity strcmp() is not getting NULL pointer.
2021-09-20 14:26:09 +02:00
Zdenek Kabelac
825e49a244 cov: use different variable name
Better for Coverity to see no change for possibly opened handle.
2021-09-20 14:26:09 +02:00
Zdenek Kabelac
9512638656 gcc-fanalyzer: better losetup error path
Fix leaking memory on error path on _process_losetup_switches().
However real impact is close to zero as dm-loop target isn't really used.
2021-09-20 13:58:57 +02:00
Zdenek Kabelac
a14371e495 cov: hide false positive warning
Here we have valid use case of strncpy() which just need
to fill precise buffer size - so no explicit \0 on buffer
end is needed.
2021-09-13 12:34:41 +02:00
Zdenek Kabelac
63930f576a cov: add some initializers 2021-09-13 12:34:41 +02:00
Zdenek Kabelac
a8ee82ed51 libdm: enhance tracking of activated LVs
Existing mechanism was not able to trace root volume issue.
Simplify the functionality by using simply using activated flag
and trace the dtree in reverse order.
2021-09-13 12:34:41 +02:00
Zdenek Kabelac
6c4cd7b2f2 cache: fix parentheses for migration_threshold
When generating table line for cache target line,
the estimation of added arguments was incorrectly
calculated as the evaluation order of "?" is
made after "+".

However the result was 'masked' by the

Reported-by: Jian Cai jcai19
2021-09-13 12:34:41 +02:00
Zdenek Kabelac
d499491501 cov: ensure bufffe size is at least 5
Analyzer can now see, the buffer size will have at least 5 chars
on succefull path.
2021-07-28 00:49:28 +02:00
Zdenek Kabelac
21bdd0a359 clang: always initialized values 2021-04-23 23:00:55 +02:00
Zdenek Kabelac
d388b36da2 cov: daemonize avoid leak of FD on error path
Use our common patter for reopening FDs to /dev/null
that avoids leaking FD on error path.
2021-04-23 23:00:55 +02:00
Zdenek Kabelac
ebf33323b9 makefiles: deps also for cxx
Generate deps also for .cxx.
Remove include dir deps - there is nothing to build.
2021-04-12 09:54:16 +02:00
Zdenek Kabelac
75424dd692 libdm: replace deprecated security_context_t
Use 'char *' instead of deprecated security_context_t.
In more details i.e.:

https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1776
2021-04-12 09:54:16 +02:00
Zdenek Kabelac
aee0cd6530 makefiles: static linking enhancements 2021-04-12 09:54:15 +02:00
Zdenek Kabelac
6f6583afed libdm: fix compiling with older gcc 2021-04-06 22:31:23 +02:00
Zdenek Kabelac
e86cd9c5ba makefiles: remove unneeded var changes 2021-04-06 22:02:31 +02:00
Zdenek Kabelac
f1d3648dc7 libdm: eliminate some abi-dumper errors
ABI dumper does not like missing enum/union/struct names,
so add them with _e, _u suffix.

Usage reference:

https://doc.dpdk.org/guides-16.04/contributing/versioning.html
2021-04-06 21:26:57 +02:00
Zdenek Kabelac
14ea63cfc7 symver: sorting 2021-04-06 21:26:57 +02:00
Zdenek Kabelac
60eb608d66 symver: restore and uncomment some symbols 2021-04-06 21:26:57 +02:00
Zdenek Kabelac
c23f4c8075 makefiles: add check for versioned symbols
Simple check produced library has the latest symbol as well as its versioned
older version with check for dm_stats_create_region().
2021-04-06 21:26:57 +02:00
Zdenek Kabelac
40b277ae17 makefiles: slight change in .export.sym
Avoid emitting Local symbol and sort symbols from
start and add dependency on previous version
Should not change anything, just better followup
linkage guidlines.
2021-04-06 21:26:57 +02:00
Zdenek Kabelac
1398e66a55 libdm: move dm_task_get_info_with_deferred_remove
Version is only needed for dm_task_get_info().
dm_task_get_info_with_deferred_remove() shall be compiled for
non-versioned library as well.
2021-04-06 21:26:57 +02:00
Zdenek Kabelac
a8480f0f6e libdm: symbol versioning with -flto
Gcc10 introduced different strategy how to build
shared libraries with their new LTO optimizer.

Insired by:

https://akkadia.org/drepper/symbol-versioning
https://sourceware.org/pipermail/elfutils-devel/attachments/20200414/1c0c2903/attachment.bin
https://github.com/InBetweenNames/gentooLTO/issues/459
https://github.com/linux-rdma/rdma-core/blob/master/util/symver.h
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48200
2021-04-06 21:26:57 +02:00
Zdenek Kabelac
648188df2a libdm: use libdm header util.h
Avoid using lvm header for libdm build.
2021-03-30 13:08:14 +02:00
Zdenek Kabelac
1cedbaf137 configure: support builds without versioning
Not all libc (like musl, uclibc dietlibc) libraries support full symbol
version resolution in runtime like glibc.
Add support to not generate symbol versions when compiling against them.

Additionally libdevmapper.so was broken when compiled against
uclibc. Runtime linker loader caused calling dm_task_get_info_base()
function recursively, leading to segmentation fault.

Introduce --with-symvers=STYLE option, which allows to choose
between gnu and disabled symbol versioning. By default gnu symbol
versioning is used.
__GNUC__ check is replaced now with GNU_SYMVER.
Additionally ld version script is included only in
case of gnu option, which slightly reduces output size.

Providing --without-symvers to configure script when building against
uclibc library fixes segmentation fault error described above, due to
lack of several versions of the same symbol in libdevmapper.so
library.

Based on:
https://patchwork.kernel.org/project/dm-devel/patch/20180831144817.31207-1-m.niestroj@grinn-global.com/

Suggested-by: Marcin Niestroj <m.niestroj@grinn-global.com>
2021-03-30 13:06:19 +02:00
Zdenek Kabelac
3d26bde1c0 make: cflow target works again
Restored 'make cflow' functinality.
Produces some quick referece of function chaining and usage.
2021-03-20 00:05:01 +01:00
Zdenek Kabelac
e86798203e make: simplify dependency loading
No need for extra ifdefs around.
2021-03-19 23:21:18 +01:00
Zdenek Kabelac
48d04afaa2 make: restore buildir != srcdir support
Our new faster deps generation missed support for
buildirs != srcdir - as it can be usable to have
several builds from unchanged directory with sources.
2021-03-19 23:21:18 +01:00
Zdenek Kabelac
f7912635a0 cov: ensure buffer is initialized 2021-03-10 01:35:02 +01:00
Zdenek Kabelac
bee9b5c1d8 cov: mask uninitialized value
Coverity doesn't track ioctl() too well, so let's just make it quiet.
2021-03-10 01:34:27 +01:00
Zdenek Kabelac
7342ab06fc debug: change sys_error to sys_debug
These messages do not cause command error - so changing logging level
to just 'sys_debug' (so visible only with -vvvv)
2021-03-10 01:11:52 +01:00
Zdenek Kabelac
6846af6612 makefiles: retry faster deps again
From commit 29abba3785 we have hopefully
fixed most of troubles for deps tracking we had in past - so retry
again.

Drop explicit configure.h from DEPS - as it's automatically gathered
by gcc dependency tracking anyway.
2021-03-02 22:54:40 +01:00
Zdenek Kabelac
39eee85fff makefiles: better logging
Show only filename instead of full path name when building
in builddir != srcdir
2021-03-02 22:54:40 +01:00
Zdenek Kabelac
8bfa4439e1 makefiles: fix pofile generation
If there is any user of --enable-nls  and wants to get
usable .po language file  -  use 'make pofile'
2021-03-02 22:54:40 +01:00
Zdenek Kabelac
5509e764f1 makefiles: add alias for device-mapper
Support also 'make device_mapper' so user is less confused.
2021-03-02 22:54:40 +01:00
Zdenek Kabelac
82bffa99ad libdm: simplify line emitter checking 2021-02-10 15:39:03 +01:00
Zdenek Kabelac
48030389ce libdm: add dm_tree_node_add_thin_pool_target_v1
Supports thin-pool without crop.
2021-02-01 14:52:32 +01:00
Zdenek Kabelac
756066a2e8 libdm: relocate code for sending messages
To be able to send messages for recently resumed devices,
move code into inner loop.
Matching commit c1a6b10d09.
2020-10-19 16:53:19 +02:00
Zdenek Kabelac
a17ec7e0ba dm: remove created devices on error path
DM tree keeps track of created device while preloading a device tree.
When fail occures during such preload, it will now try to remove
all created and preloaded device. This makes it easier to maintain
stacking of device, since we do not need to check in-depth for
existance of all possible created devices during the failure.
2020-10-19 16:53:19 +02:00
Zdenek Kabelac
b2a326b511 libdm: validate thin-pool before sending messages
Alhtough lvm2 does validation on its side, ensure DM code
is not sending messages to failed thin pool.
2020-10-19 16:53:18 +02:00
Zdenek Kabelac
4b0565b82f libdm: enhance error message 2020-10-19 16:53:18 +02:00
Zdenek Kabelac
4c1caa7e26 libdm: split code for sending message
Move message sending from _thin_pool_node_message to
new _node_message for possible better code sharing.
2020-10-19 16:53:18 +02:00
Bastian Germann
168e2ffbcd lvm: add readline alternative editline
LVM2 is distributed under GPLv2 only. The readline library changed its
license long ago to GPLv3. Given that those licenses are incompatible
and you follow the FSF in their interpretation that dynamically linking
creates a derivative work, distributing LVM2 linked against a current
readline version might be legally problematic.

Add support for the BSD licensed editline library as an alternative for
readline.

Link: https://thrysoee.dk/editline
2020-09-29 10:13:24 +02:00