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Commit Graph

24 Commits

Author SHA1 Message Date
Zdenek Kabelac
377e326156 cov: ensuring buffer is zeroed 2021-09-21 21:03:47 +02:00
Zdenek Kabelac
3d96203e21 cov: avoid leak when repeating options
Do not leak previous buffer, when option is set more then once.
2021-04-23 22:59:25 +02:00
David Teigland
f5fbb1b76f lvmlockctl: replace popen and system
with fork and exec to avoid use of shell.
largely copied from lib/misc/lvm-exec.c

require lvmlockctl_kill_command to be full path

use lvm config instead of lvmconfig to avoid need for LVM_DIR
2021-03-03 17:43:29 -06:00
David Teigland
89a3440fc0 lvmlockctl: use lvm.conf lvmlockctl_kill_command
which specifies a command to run by lvmlockctl --kill.
2021-03-03 13:57:15 -06:00
Zdenek Kabelac
91d16fc049 lvmlockctl: use inline initilizers
clang: ensure r_name[] is in all possible paths defined.
2020-02-04 17:22:06 +01:00
Zdenek Kabelac
d01f27f411 lvmlockctl: ensure result value is always defined
Ensure passed pointer gets predefined value (instead of random stack
value).
2020-02-04 17:22:06 +01:00
David Teigland
d8284beb23 lvmlockctl: wait by default when stopping
lvmlockctl --stop-lockspaces was by default not waiting
for all the lockspaces to be gone.
2018-11-27 13:41:33 -06:00
Joe Thornber
7f97c7ea9a build: Don't generate symlinks in include/ dir
As we start refactoring the code to break dependencies (see doc/refactoring.txt),
I want us to use full paths in the includes (eg, #include "base/data-struct/list.h").
This makes it more obvious when we're breaking abstraction boundaries, eg, including a file in
metadata/ from base/
2018-05-14 10:30:20 +01:00
Zdenek Kabelac
da9a8fdedc lvmlockctl: fix check for failing close
On  close() failure it's -1.
2017-08-25 14:20:59 +02:00
Peter Rajnoha
3d333e5a29 coverity: fix warnings about missing return value check for sscanf
All the variables for sscanf in lvmlockctl.c and lvmlockd-sanlock.c are
zeroed before sscanf call so the failure is detected by seeing the zero
value instead of proper one in subsequent code - so use (void) for
sscanf calls to ignore return value here.
2016-05-31 10:06:25 +02:00
Zdenek Kabelac
3db5ba08b1 cleanup: drop unneded headers
Coverity notices they are not really needed.
2015-11-09 17:04:10 +01:00
Zdenek Kabelac
32762e2a9c libdaemon: fix passing 32bit values for %d
Since %d is now prohibited for its great confusion,
replace it with  FMTd64 and correctly converted int64_t
parameter.
2015-11-09 17:04:10 +01:00
David Teigland
c71af0895d lvmlockctl: update command descriptions and add logging
The one line descriptions will match the man page.

Add a syslog entry when enabling/disabling the global lock
to help debugging.
2015-09-04 11:05:13 -05:00
David Teigland
1fae121b22 lvmlockd: fix sending debug info to lvmlockctl
Single messages sent over unix sockets are limited in
size to /proc/sys/net/core/wmem_max, so send the 1MB
debug buffer in smaller chunks to avoid EMSGSIZE.

Also look for EAGAIN and retry sending for a limited
time when the reader is slower than the writer.

Also shift the location of that code so it's the same
as other requests.
2015-08-20 14:07:11 -05:00
David Teigland
9c5a85ce24 lvmlockctl: fix debug output 2015-08-18 16:49:33 -05:00
David Teigland
fd1782b5fc lvmlockd: handle loss of sanlock lease storage
This adds the infrastructure, code paths, error reporting,
etc. to handle storage errors, or storage loss, under the
sanlock leases in a VG that is being used.  The loss of
storage means sanlock cannot renew its leases, which means
that the host needs to stop using the shared VG before its
leases expire.

This still requires manually shutting down a VG that has
lost lease storage, e.g. unmounting file systems,
deactivating LVs in the VG.  The next step is to
automatically use a command like blkdeactivate to do that.
2015-08-05 10:21:45 -05:00
David Teigland
78135c24b4 lvmlockd: small fixes and cleanup for lvmlockctl
. clean up the info output for readability
. remove some internal debug output
. fix the daemon quit option
2015-07-30 10:50:22 -05:00
Peter Rajnoha
10d27998b3 coverity: missing return value checks 2015-07-09 15:15:15 +02:00
David Teigland
2566bdfbc3 lvmlockctl: fix uninitialized names
When formatting and printing info from lvmlockd.
Also fix some new line problems.
2015-07-08 10:58:56 -05:00
Peter Rajnoha
3ec4813ba2 coverity: fix missing initialization
... Using uninitialized value "lockd_state" when calling "lockd_vg"
(even though lockd_vg assigns 0 to the lockd_state, but it looks at
previous state of lockd_state just before that so we need to have
that properly initialized!)

libdm/libdm-report.c:2934: uninit_use_in_call: Using uninitialized value "tm". Field "tm.tm_gmtoff" is uninitialized when calling "_get_final_time".

daemons/lvmlockd/lvmlockctl.c:273: uninit_use_in_call: Using uninitialized element of array "r_name" when calling "format_info_r_action". (just added FIXME as this looks unfinished?)
2015-07-08 14:53:30 +02:00
Peter Rajnoha
16e9b32c2f coverity: fix resource leaks
lib/log/log.c:115: leaked_storage: Variable "st" going out of scope leaks the storage it points to
daemons/lvmpolld/lvmpolld-core.c:573: leaked_storage: Variable "cmdargv" going out of scope leaks the storage it points to
daemons/lvmlockd/lvmlockd-core.c:5341: leaked_handle: Handle variable "fd" going out of scope leaks the handle
daemons/lvmlockd/lvmlockctl.c:575: overwrite_var: Overwriting "able_vg_name" in "able_vg_name = strdup(optarg)" leaks the storage that "able_vg_name" points to
daemons/lvmlockd/lvmlockctl.c:571: overwrite_var: Overwriting "able_vg_name" in "able_vg_name = strdup(optarg)" leaks the storage that "able_vg_name" points to
daemons/lvmlockd/lvmlockctl.c:385: leaked_handle: Handle variable "s" going out of scope leaks the handle
2015-07-08 13:56:06 +02:00
Alasdair G Kergon
dfe3eb12d0 include: Standardise around new tool.h. 2015-07-06 17:30:18 +01:00
Alasdair G Kergon
36ce97c625 pre-release 2015-07-03 16:34:40 +01:00
David Teigland
fe70b03de2 Add lvmlockd 2015-07-02 15:42:26 -05:00