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This reverts commit 1b1c01a27b.
This caused messages to get dropped instead of logged into the log file.
(The log file and log function are independent at the moment.)
/lib/log/log.c:88: warning[invalidScanfArgType_int]: %llu in format string (no. 2) requires 'unsigned long long *' but the argument type is 'long long *'.
daemons/lvmlockd/lvmlockd-core.c:791: error[uninitstring]: Dangerous usage of 'version' (strncpy doesn't always null-terminate it).
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
Rename envvar LVM_LOG_FILE_UNLINK_STATUS to LVM_EXPECTED_EXIT_STATUS
and change compare sign from '!' to '>'.
Validate LVM_LOG_FILE_EPOCH and support strictly only
up-to 32 alpha chars. If the content doesn't pass
epoch is simply ignored.
Add support for 2 new envvars for internal lvm2 test suite
(though it could be possible usable for other cases)
LVM_LOG_FILE_EPOCH
Whether to add 'epoch' extension that consist from
the envvar 'string' + pid + starttime in kernel units
obtained from /proc/self/stat.
LVM_LOG_FILE_UNLINK_STATUS
Whether to unlink the log depending on return status value,
so if the command is successful the log is automatically
deleted.
API is still for now experimental to catch various issue.
The list of strings is used quite frequently and we'd like to reuse
this simple structure for report selection support too. Make it part
of libdevmapper for general reuse throughout the code.
This also simplifies the LVM code a bit since we don't need to
include and manage lvm-types.h anymore (the string list was the
only structure defined there).
The error buffer will stack error messages which is fine. However,
once you retrieve the error messages it doesn't make sense to keep
appending for each additional error message when running in the
context of a library call.
This patch clears and resets the buffer after the user retrieves
the error message.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Add log/debug_classes to lvm.conf to allow debug messages to be
classified and filtered at runtime.
The dm_errno field is only used by log_error(), so I've redefined it
for log_debug() messages to hold the message class.
By default, all existing messages appear, but we can add categories that
generate high volumes of data, such as logging all traffic to/from
lvmetad.
When the abort_on_internal_errors is enabled, we aborted prior
the syslog logging output.
Since such fatal error gets level _LOG_FATAL it should
not be blocked by debug_level() check so lets move it further,
to get abort error logged also via syslog.
We cannot do anything better here anyway - we are already in logging function,
so just ignore this issue here - it will most likely stop application later.
Isn't usually perfomance critical - but log_error is used i.e.for debuging,
this code noticable slows down the processing.
Added 512KB limit to avoid memory exhastions in case of some endless loop.
TODO: use _lvm_errmsg buffer only when lvm2api needs it.
New strategy for memory locking to decrease the number of call to
to un/lock memory when processing critical lvm functions.
Introducing functions for critical section.
Inside the critical section - memory is always locked.
When leaving the critical section, the memory stays locked
until memlock_unlock() is called - this happens with
sync_local_dev_names() and sync_dev_names() function call.
memlock_reset() is needed to reset locking numbers after fork
(polldaemon).
The patch itself is mostly rename:
memlock_inc -> critical_section_inc
memlock_dec -> critical_section_dec
memlock -> critical_section
Daemons (clmvd, dmevent) are using memlock_daemon_inc&dec
(mlockall()) thus they will never release or relock memory they've
already locked memory.
Macros sync_local_dev_names() and sync_dev_names() are functions.
It's better for debugging - and also we do not need to add memlock.h
to locking.h header (for memlock_unlock() prototyp).
Related compiler warning:
log/log.c:242: warning: declaration of 'error_message_produced' shadows a global declaration
../include/log.h:98: warning: shadowed declaration is here
