Daniel P. Berrangé 950c4e6c94 opts: don't silently truncate long option values ... The existing QemuOpts parsing code uses a fixed size 1024 byte buffer for storing the option values. If a value exceeded this size it was silently truncated and no error reported to the user. Long option values is not a common scenario, but it is conceivable that they will happen. eg if the user has a very deeply nested filesystem it would be possible to come up with a disk path that was > 1024 bytes. Most of the time if such data was silently truncated, the user would get an error about opening a non-existant disk. If they're unlucky though, QEMU might use a completely different disk image from another VM, which could be considered a security issue. Another example program was in using the -smbios command line arg with very large data blobs. In this case the silent truncation will be providing semantically incorrect data to the guest OS for SMBIOS tables. If the operating system didn't limit the user's argv when spawning QEMU, the code should honour whatever length arguments were given without imposing its own length restrictions. This patch thus changes the code to use a heap allocated buffer for storing the values during parsing, lifting the arbitrary length restriction. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20180416111743.8473-4-berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>		2018-05-09 00:13:39 +02:00
..
acl.c	Drop Emacs local variables lists redundant with .dir-locals.el	2016-07-12 16:19:16 +02:00
aio-posix.c	async: use ARRAY_SIZE macro	2018-02-10 10:43:18 +03:00
aio-wait.c	block: make BDRV_POLL_WHILE() re-entrancy safe	2018-03-12 11:07:37 +00:00
aio-win32.c	iothread: fix breakage on windows	2018-03-26 14:37:15 +02:00
aiocb.c	block: move AioContext, QEMUTimer, main-loop to libqemuutil	2017-02-21 11:14:07 +00:00
async.c	coroutine: abort if we try to schedule or enter a pending coroutine	2017-11-21 11:58:07 -05:00
base64.c
bitmap.c	bitmap: provide to_le/from_le helpers	2017-09-22 14:11:25 +02:00
bitops.c	bitmap: remove BITOP_WORD()	2017-09-22 14:11:23 +02:00
buffer.c
bufferiszero.c	util: Introduce include/qemu/cpuid.h	2017-07-24 12:42:55 +01:00
cacheinfo.c	configure: Drop AIX host support	2017-09-07 19:02:30 +01:00
compatfd.c	cpus: remove ugly cast on sigbus_handler	2017-03-03 16:40:02 +01:00
coroutine-sigaltstack.c	coroutine-sigaltstack: use helper for allocating stack memory	2016-09-29 14:13:39 +02:00
coroutine-ucontext.c	build: try improve handling of clang warnings	2018-03-12 08:59:03 +01:00
coroutine-win32.c	coroutine: add a macro for the coroutine stack size	2016-09-29 14:13:39 +02:00
crc32c.c
cutils.c	cutils: add qemu_strtoi & qemu_strtoui parsers for int/unsigned int types	2018-03-13 18:06:05 +00:00
envlist.c	util: Use g_malloc/g_free in envlist.c	2017-05-07 09:57:51 +03:00
error.c	error: Implement the warn and free Error functions	2017-07-13 13:50:19 +02:00
event_notifier-posix.c	Revert "qemu: add a cleanup callback function to EventNotifier"	2018-01-24 19:20:19 +02:00
event_notifier-win32.c	Revert "qemu: add a cleanup callback function to EventNotifier"	2018-01-24 19:20:19 +02:00
fifo8.c	migration: consolidate VMStateField.start	2017-02-13 17:27:13 +00:00
getauxval.c
hbitmap.c	hbitmap: fix missing restore count when finish deserialization	2018-02-07 11:35:49 -05:00
hexdump.c
host-utils.c	host-utils: Implement unsigned quadword left/right shift and unit tests	2017-01-31 10:10:14 +11:00
id.c
iohandler.c	block: move AioContext, QEMUTimer, main-loop to libqemuutil	2017-02-21 11:14:07 +00:00
iov.c	util: Fix assertion in iov_copy() upon zero 'bytes' and non-zero 'offset'	2016-08-03 18:44:57 +02:00
keyval.c	qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF	2018-05-04 08:27:53 +02:00
lockcnt.c	qemu-thread: optimize QemuLockCnt with futexes on Linux	2017-01-16 13:25:18 +00:00
log.c	util/cutils: Rename qemu_strtoll(), qemu_strtoull()	2017-02-23 20:35:35 +01:00
main-loop.c	replay: push replay_mutex_lock up the call tree	2018-03-12 17:10:36 +01:00
Makefile.objs	membarrier: add --enable-membarrier	2018-03-12 16:12:47 +01:00
memfd.c	memfd: fix vhost-user-test on non-memfd capable host	2018-04-09 12:57:06 +02:00
mmap-alloc.c	Make qemu_mempath_getpagesize() accept NULL	2018-04-27 18:05:22 +10:00
module.c	module: Don't load the same module if requested multiple times	2016-10-07 14:14:06 +02:00
notify.c
osdep.c	osdep: Retry SETLK upon EINTR	2018-01-23 12:33:07 +01:00
oslib-posix.c	mem: add share parameter to memory-backend-ram	2018-02-19 13:03:24 +02:00
oslib-win32.c	mem: add share parameter to memory-backend-ram	2018-02-19 13:03:24 +02:00
pagesize.c	util: move qemu_real_host_page_size/mask to osdep.h	2017-10-10 09:45:00 -07:00
path.c	util: Removed unneeded header from path.c	2017-03-14 13:26:37 +01:00
qdist.c	qdist: return "(empty)" instead of NULL when printing an empty dist	2016-08-03 18:44:56 +02:00
qemu-config.c	qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF	2018-05-04 08:27:53 +02:00
qemu-coroutine-io.c	coroutine: move entry argument to qemu_coroutine_create	2016-07-13 13:26:02 +02:00
qemu-coroutine-lock.c	coroutine: avoid co_queue_wakeup recursion	2018-03-27 13:05:28 +01:00
qemu-coroutine-sleep.c	coroutine: simplify co_aio_sleep_ns() prototype	2017-12-19 09:25:27 +00:00
qemu-coroutine.c	coroutine: avoid co_queue_wakeup recursion	2018-03-27 13:05:28 +01:00
qemu-error.c	error: Revert unwanted change of warning messages	2017-07-24 14:16:29 +02:00
qemu-openpty.c
qemu-option.c	opts: don't silently truncate long option values	2018-05-09 00:13:39 +02:00
qemu-progress.c	progress: Show current progress on SIGINFO	2017-04-28 18:48:11 +02:00
qemu-sockets.c	sockets: allow SocketAddress 'fd' to reference numeric file descriptors	2018-03-13 18:06:06 +00:00
qemu-thread-posix.c	qemu-thread: always keep the posix wrapper layer	2018-05-09 00:13:38 +02:00
qemu-thread-win32.c	util/qemu-thread-*: add qemu_lock, locked and unlock trace events	2018-01-16 14:54:52 +01:00
qemu-timer-common.c
qemu-timer.c	replay: save prior value of the host clock	2018-03-12 16:12:50 +01:00
qht.c	qht: fix unlock-after-free segfault upon resizing	2016-10-06 18:04:13 +02:00
range.c	range: Replace internal representation of Range	2016-07-04 16:49:33 +03:00
rcu.c	membarrier: introduce qemu/sys_membarrier.h	2018-03-12 16:12:47 +01:00
readline.c	readline: don't free completions in readline_free()	2018-02-05 13:54:39 +01:00
stats64.c	util/stats64: Fix min/max comparisons	2017-11-15 09:34:51 +01:00
sys_membarrier.c	sys_membarrier: fix up include directives	2018-04-05 14:37:38 +02:00
systemd.c	qemu-ga: obey LISTEN_PID when using systemd socket activation	2017-03-19 11:12:12 +01:00
thread-pool.c	thread-pool: add missing qemu_bh_cancel in completion function	2017-03-17 12:54:21 +01:00
throttle.c	throttle: Assert that bkt->max is valid in throttle_compute_wait()	2017-09-26 14:46:23 +02:00
timed-average.c
trace-events	util: Introduce vfio helpers	2018-02-08 09:22:03 +08:00
unicode.c
uri.c	util/uri.c: wrap single statement blocks with braces {}	2018-03-05 09:03:17 +00:00
uuid.c	util: add is_equal to UUID API	2017-12-20 22:01:24 +08:00
vfio-helpers.c	block/nvme: fix Coverity reports	2018-03-01 15:21:46 +08:00