Paolo Bonzini 59bde21374 util/log: do not close and reopen log files when flags are turned off ... log_append makes sure that if you turn off the logging (which clears log_flags and makes need_to_open_file false) the old log is not overwritten. The usecase is that if you remove or move the file QEMU will not keep writing to the old file. However, this is not always the desited behavior, in particular having log_append==1 after changing the file name makes little sense. When qemu_set_log_internal is called from the logfile monitor command, filename must be non-NULL and therefore changed_name must be true. Therefore, the only case where the file is closed and need_to_open_file == false is indeed when log_flags becomes zero. In this case, just flush the file and do not bother closing it, thus faking the same append behavior as previously. The behavioral change is that changing the logfile twice, for example log1 -> log2 -> log1, will cause log1 to be overwritten. This can simply be documented, since it is not a particularly surprising behavior. Suggested-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Greg Kurz <groug@kaod.org> Message-Id: <20221025092119.236224-1-pbonzini@redhat.com> [groug: nullify global_file before actually closing the file] Signed-off-by: Greg Kurz <groug@kaod.org> Message-Id: <20221108140032.1460307-2-groug@kaod.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2023-01-06 00:50:32 +01:00
..
aio-posix.c	util/event-loop-base: Introduce options to set the thread pool size	2022-05-09 10:43:23 +01:00
aio-posix.h	aio-posix: fix spurious ->poll_ready() callbacks in main loop	2022-03-17 11:23:18 +00:00
aio-wait.c	aio_wait_kick: add missing memory barrier	2022-06-24 17:07:06 +02:00
aio-win32.c	util/aio-win32: Correct the event array size in aio_poll()	2022-11-06 09:48:26 +01:00
aiocb.c	block: move AioContext, QEMUTimer, main-loop to libqemuutil	2017-02-21 11:14:07 +00:00
async-teardown.c	os-posix: asynchronous teardown for shutdown on Linux	2022-10-31 09:46:34 +01:00
async.c	async: Register/unregister aiocontext in graph lock list	2022-12-15 16:07:43 +01:00
atomic64.c	osdep: Move memalign-related functions to their own header	2022-03-07 13:16:49 +00:00
base64.c	nomaintainer: Fix Lesser GPL version number	2020-11-15 17:04:40 +01:00
bitmap.c	migration: Use non-atomic ops for clear log bitmap	2022-11-21 11:58:10 +01:00
bitops.c	avoid TABs in files that only contain a few	2019-01-11 15:46:56 +01:00
block-helpers.c	block: move logical block size check function to a common utility function	2020-10-23 13:42:16 +01:00
block-helpers.h	block: move logical block size check function to a common utility function	2020-10-23 13:42:16 +01:00
buffer.c	nomaintainer: Fix Lesser GPL version number	2020-11-15 17:04:40 +01:00
bufferiszero.c	cpuid: use unsigned for max cpuid	2022-02-04 09:07:43 -05:00
cacheflush.c	util/cacheflush: Optimize flushing when ppc host has coherent icache	2022-06-21 09:28:41 -07:00
compatfd.c	util: replace pipe()+cloexec with g_unix_open_pipe()	2022-05-03 15:18:14 +04:00
coroutine-sigaltstack.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
coroutine-ucontext.c	coroutine-ucontext: use QEMU_DEFINE_STATIC_CO_TLS()	2022-05-04 15:55:23 +02:00
coroutine-win32.c	coroutine-win32: use QEMU_DEFINE_STATIC_CO_TLS()	2022-05-04 15:55:23 +02:00
crc-ccitt.c	util: Add CRC16 (CCITT) calculation routines	2021-01-24 20:10:54 +01:00
crc32c.c	Include qemu-common.h exactly where needed	2019-06-12 13:20:20 +02:00
cutils.c	cutils: Add missing dyld(3) include on macOS	2022-08-12 11:33:52 +01:00
dbus.c	util: add dbus helper unit	2020-01-06 18:41:32 +04:00
drm.c	util/drm: make portable by avoiding struct dirent d_type	2020-07-13 14:36:10 +01:00
envlist.c	Use g_new() & friends where that makes obvious sense	2022-03-21 15:44:44 +01:00
error-report.c	error-report: fix g_date_time_format assertion	2022-04-28 08:51:56 +02:00
error.c	error: make Error **errp const where it is appropriate	2019-12-18 08:36:16 +01:00
event_notifier-posix.c	Replace qemu_pipe() with g_unix_open_pipe()	2022-05-03 15:17:56 +04:00
event_notifier-win32.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
fdmon-epoll.c	qemu/atomic.h: rename atomic_ to qatomic_	2020-09-23 16:07:44 +01:00
fdmon-io_uring.c	aio-posix: fix build failure io_uring 2.2	2022-03-17 11:23:18 +00:00
fdmon-poll.c	fdmon-poll: reset npfd when upgrading to fdmon-epoll	2020-09-23 13:45:52 +01:00
fifo8.c	utils/fifo8: change fatal errors from abort() to assert()	2021-02-07 20:38:20 +00:00
filemonitor-inotify.c	nomaintainer: Fix Lesser GPL version number	2020-11-15 17:04:40 +01:00
filemonitor-stub.c	nomaintainer: Fix Lesser GPL version number	2020-11-15 17:04:40 +01:00
getauxval.c	util/getauxval: Porting to FreeBSD getauxval feature	2020-06-26 06:45:29 -04:00
guest-random.c	util/guest-random: Fix size arg to tail memcpy	2021-07-09 18:42:46 +02:00
hbitmap.c	block: simplify handling of try to merge different sized bitmaps	2022-06-24 17:07:06 +02:00
hexdump.c	include: move C/util-related declarations to cutils.h	2022-04-06 14:31:43 +02:00
host-utils.c	host-utils: Implemented signed 256-by-128 division	2022-06-20 08:38:58 -03:00
id.c	net: Use id_generate() in the network subsystem, too	2021-03-09 21:47:45 +01:00
int128.c	qemu/int128: addition of div/rem 128-bit operations	2022-01-08 15:46:10 +10:00
interval-tree.c	util: Add interval-tree.c	2022-12-20 17:09:41 -08:00
iov.c	util: make do_send_recv work with partial send/recv	2022-10-12 19:22:01 +04:00
iova-tree.c	util: accept iova_tree_remove_parameter by value	2022-09-02 10:22:39 +08:00
keyval.c	include: add qemu/keyval.h	2022-04-21 17:03:51 +04:00
lockcnt.c	qemu/atomic.h: rename atomic_ to qatomic_	2020-09-23 16:07:44 +01:00
log.c	util/log: do not close and reopen log files when flags are turned off	2023-01-06 00:50:32 +01:00
main-loop.c	util/main-loop: Avoid adding the same HANDLE twice	2022-11-06 09:48:26 +01:00
memalign.c	osdep: Move memalign-related functions to their own header	2022-03-07 13:16:49 +00:00
memfd.c	linux-user: add memfd_create	2019-09-11 08:46:17 +02:00
meson.build	util: Add interval-tree.c	2022-12-20 17:09:41 -08:00
mmap-alloc.c	util/mmap-alloc: Remove qemu_mempath_getpagesize()	2022-08-26 13:34:21 +02:00
module.c	module: add Error arguments to module_load and module_load_qom	2022-11-06 09:48:50 +01:00
notify.c	xen / notify: introduce a new XenWatchList abstraction	2019-09-24 12:18:47 +01:00
nvdimm-utils.c	Clean up includes	2020-12-10 17:16:44 +01:00
osdep.c	tests/qtest: Use send/recv for socket communication	2022-10-28 11:17:12 +02:00
oslib-posix.c	util: Make qemu_prealloc_mem() optionally consume a ThreadContext	2022-10-27 11:00:56 +02:00
oslib-win32.c	util/oslib-win32: Remove obsolete reference to g_poll code	2022-12-15 15:19:24 +01:00
path.c	util/path: Do not cache all filenames at startup	2019-06-24 22:19:30 +02:00
qdist.c	qdist: return "(empty)" instead of NULL when printing an empty dist	2016-08-03 18:44:56 +02:00
qemu-co-shared-resource.c	co-shared-resource: protect with a mutex	2021-06-25 14:24:24 +03:00
qemu-co-timeout.c	util: add qemu-co-timeout	2022-06-29 10:56:12 +03:00
qemu-config.c	util/qemu-config: Fix "query-command-line-options" to provide the right values	2022-12-15 15:19:23 +01:00
qemu-coroutine-io.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
qemu-coroutine-lock.c	coroutine: add flag to re-queue at front of CoQueue	2022-10-26 14:56:42 -04:00
qemu-coroutine-sleep.c	coroutine-sleep: introduce qemu_co_sleep	2021-05-21 18:22:33 +01:00
qemu-coroutine.c	coroutine: remove incorrect coroutine_fn annotations	2022-10-07 12:11:40 +02:00
qemu-option.c	qemu-option: Allow deleting opts during qemu_opts_foreach()	2021-10-15 16:11:22 +02:00
qemu-print.c	monitor: Use getter/setter functions for cur_mon	2020-10-09 07:08:19 +02:00
qemu-progress.c	include: move progress API to qemu-progress.h	2022-04-06 14:31:43 +02:00
qemu-sockets.c	sockets: Use ERRP_GUARD() where obviously appropriate	2022-12-14 16:19:35 +01:00
qemu-thread-common.h	Clean up includes	2018-12-20 10:29:08 +01:00
qemu-thread-posix.c	util: Introduce qemu_thread_set_affinity() and qemu_thread_get_affinity()	2022-10-27 11:00:36 +02:00
qemu-thread-win32.c	util: Introduce qemu_thread_set_affinity() and qemu_thread_get_affinity()	2022-10-27 11:00:36 +02:00
qemu-timer-common.c	semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ	2021-01-18 10:05:06 +00:00
qemu-timer.c	qemu-timer: Skip empty timer lists before locking in qemu_clock_deadline_ns_all	2022-06-21 09:24:34 -07:00
qht.c	osdep: Move memalign-related functions to their own header	2022-03-07 13:16:49 +00:00
qsp.c	qemu/atomic: Add aligned_{int64,uint64}_t types	2021-07-21 07:45:38 -10:00
range.c	Don't talk about the LGPL if the file is licensed under the GPL	2019-01-30 10:51:20 +01:00
rcu.c	rcu: use coroutine TLS macros	2022-03-04 18:14:40 +01:00
readline.c	readline: Fix possible array index out of bounds in readline_hist_add()	2021-01-04 11:13:39 +00:00
selfmap.c	util/selfmap: Discard mapping on error	2021-07-26 07:06:49 -10:00
stats64.c	qemu/atomic.h: rename atomic_ to qatomic_	2020-09-23 16:07:44 +01:00
sys_membarrier.c	sys_membarrier: fix up include directives	2018-04-05 14:37:38 +02:00
systemd.c	tools: Fix use of fcntl(F_SETFD) during socket activation	2020-05-04 14:54:35 -05:00
thread-context.c	qapi: Use returned bool to check for failure (again)	2022-12-14 16:19:35 +01:00
thread-pool.c	thread-pool: remove stopping variable	2022-05-25 21:26:26 +02:00
throttle.c	Remove superfluous timer_del() calls	2021-01-08 15:13:38 +00:00
timed-average.c	Fix some typos found by codespell	2016-05-18 15:04:27 +03:00
trace-events	modules: add tracepoints	2021-07-09 18:20:27 +02:00
trace.h	trace: switch position of headers to what Meson requires	2020-08-21 06:18:24 -04:00
transactions.c	transactions: Invoke clean() after everything else	2021-11-16 09:43:44 +01:00
unicode.c	json: Reject invalid UTF-8 sequences	2018-08-24 20:26:37 +02:00
uri.c	util/uri: do not check argument of uri_free()	2021-07-09 12:26:05 +02:00
userfaultfd.c	migration: introduce UFFD-WP low-level interface helpers	2021-02-08 11:19:51 +00:00
uuid.c	Include qemu-common.h exactly where needed	2019-06-12 13:20:20 +02:00
vfio-helpers.c	Drop more useless casts from void * to pointer	2022-12-14 16:19:35 +01:00
vhost-user-server.c	util: rename qemu_*block() socket functions	2022-05-03 15:53:20 +04:00
yank.c	yank: Remove dependency on qiochannel	2021-04-01 15:27:44 +04:00