David Woodhouse 3ef7ff83ca hw/xen: Add basic XenStore tree walk and write/read/directory support ... This is a fairly simple implementation of a copy-on-write tree. The node walk function starts off at the root, with 'inplace == true'. If it ever encounters a node with a refcount greater than one (including the root node), then that node is shared with other trees, and cannot be modified in place, so the inplace flag is cleared and we copy on write from there on down. Xenstore write has 'mkdir -p' semantics and will create the intermediate nodes if they don't already exist, so in that case we flip the inplace flag back to true as we populate the newly-created nodes. We put a copy of the absolute path into the buffer in the struct walk_op, with *two* NUL terminators at the end. As xs_node_walk() goes down the tree, it replaces the next '/' separator with a NUL so that it can use the 'child name' in place. The next recursion down then puts the '/' back and repeats the exercise for the next path element... if it doesn't hit that *second* NUL termination which indicates the true end of the path. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>		2023-03-07 17:04:30 +00:00
..
check-block-qdict.c	tests: unit: add NULL-pointer check	2022-09-18 09:17:41 +02:00
check-qdict.c
check-qjson.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
check-qlist.c
check-qlit.c
check-qnull.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
check-qnum.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
check-qobject.c	tests: remove block/qdict checks from check-qobject.c	2022-04-21 17:03:51 +04:00
check-qom-interface.c
check-qom-proplist.c	include: add qemu/keyval.h	2022-04-21 17:03:51 +04:00
check-qstring.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
crypto-tls-psk-helpers.c	tests: avoid DOS line endings in PSK file	2022-10-27 11:55:41 +01:00
crypto-tls-psk-helpers.h	tests: add migration tests of TLS with PSK credentials	2022-05-16 11:46:04 +01:00
crypto-tls-x509-helpers.c	tests: fix encoding of IP addresses in x509 certs	2022-05-16 11:46:04 +01:00
crypto-tls-x509-helpers.h	tests: add more helper macros for creating TLS x509 certs	2022-05-16 11:46:04 +01:00
io-channel-helpers.c	tests/channel-helper: set blocking in main thread	2022-10-12 19:22:01 +04:00
io-channel-helpers.h
iothread.c	async: the main AioContext is only "current" if under the BQL	2021-06-18 10:59:52 -05:00
iothread.h
meson.build	hw/xen: Add basic XenStore tree walk and write/read/directory support	2023-03-07 17:04:30 +00:00
pkix_asn1_tab.c	tests: remove QCRYPTO_HAVE_TLS_TEST_SUPPORT	2021-06-25 10:53:46 +02:00
ptimer-test-stubs.c	replay: Extract core API to 'exec/replay-core.h'	2023-02-27 22:29:01 +01:00
ptimer-test.c	tests/unit: Replace g_memdup() by g_memdup2()	2022-07-18 20:24:36 +02:00
ptimer-test.h
rcutorture.c	Updated the FSF address to <https://www.gnu.org/licenses/>	2023-02-27 09:15:39 +01:00
socket-helpers.c	tests/unit: Update test-io-channel-socket.c for Windows	2022-09-02 15:54:47 +04:00
socket-helpers.h	tests/unit: Update test-io-channel-socket.c for Windows	2022-09-02 15:54:47 +04:00
test-aio-multithread.c
test-aio.c	coroutine: Split qemu/coroutine-core.h off qemu/coroutine.h	2023-01-20 07:21:46 +01:00
test-authz-list.c
test-authz-listfile.c
test-authz-pam.c
test-authz-simple.c
test-base64.c
test-bdrv-drain.c	block: Mark public read/write functions GRAPH_RDLOCK	2023-02-23 19:49:17 +01:00
test-bdrv-graph-mod.c	test-bdrv-graph-mod: fix filters to be filters	2022-10-27 20:14:11 +02:00
test-bitcnt.c
test-bitmap.c
test-bitops.c
test-block-backend.c
test-block-iothread.c	block: Mark bdrv_co_block_status() and callers GRAPH_RDLOCK	2023-02-23 19:49:07 +01:00
test-blockjob-txn.c	jobs: use job locks also in the unit tests	2022-10-07 12:11:41 +02:00
test-blockjob.c	job: remove unused functions	2022-10-07 12:11:41 +02:00
test-bufferiszero.c
test-char.c	qapi chardev: Elide redundant has_FOO in generated C	2022-12-14 20:04:47 +01:00
test-clone-visitor.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
test-coroutine.c	coroutine: Clean up superfluous inclusion of qemu/lockable.h	2023-01-19 10:18:28 +01:00
test-crypto-afsplit.c
test-crypto-akcipher.c	tests/crypto: Add test suite for RSA keys	2022-05-26 11:41:56 +01:00
test-crypto-block.c	qapi crypto: Elide redundant has_FOO in generated C	2022-12-14 20:04:47 +01:00
test-crypto-cipher.c	crypto: replace 'des-rfb' cipher with 'des'	2021-07-14 14:15:52 +01:00
test-crypto-der.c	crypto: Support DER encodings	2022-11-02 06:56:32 -04:00
test-crypto-hash.c	crypto: use &error_fatal in crypto tests	2021-07-14 14:15:52 +01:00
test-crypto-hmac.c	crypto: use &error_fatal in crypto tests	2021-07-14 14:15:52 +01:00
test-crypto-ivgen.c	crypto: skip essiv ivgen tests if AES+ECB isn't available	2021-07-14 14:15:52 +01:00
test-crypto-pbkdf.c	crypto: remove obsolete crypto test condition	2021-07-14 14:15:52 +01:00
test-crypto-secret.c
test-crypto-tlscredsx509.c	tests: Use g_mkdir_with_parents()	2022-08-25 15:24:09 +02:00
test-crypto-tlssession.c	Call qemu_socketpair() instead of socketpair() when possible	2023-01-16 17:42:17 +01:00
test-crypto-xts.c
test-cutils.c	Drop duplicate #include	2023-02-08 07:28:05 +01:00
test-div128.c	host-utils: add unit tests for divu128/divs128	2021-10-27 17:10:00 -07:00
test-fdmon-epoll.c	aio-posix: split poll check from ready handler	2022-01-12 17:09:39 +00:00
test-forward-visitor.c	include: add qemu/keyval.h	2022-04-21 17:03:51 +04:00
test-hbitmap.c	Use g_new() & friends where that makes obvious sense	2022-03-21 15:44:44 +01:00
test-image-locking.c	tests/unit/test-image-locking: Fix handling of temporary files	2022-10-12 12:48:53 +02:00
test-int128.c	qemu/int128: add int128_urshift	2022-04-20 18:00:30 -03:00
test-interval-tree.c	util: Add interval-tree.c	2022-12-20 17:09:41 -08:00
test-io-channel-buffer.c
test-io-channel-command.c	tests: be a bit more strict cleaning up fifos	2023-03-01 10:31:20 +00:00
test-io-channel-file.c	tests: replace pipe() with g_unix_open_pipe(CLOEXEC)	2022-05-03 15:46:08 +04:00
test-io-channel-null.c	io: add a QIOChannelNull equivalent to /dev/null	2022-06-22 18:11:21 +01:00
test-io-channel-socket.c	io: Add support for MSG_PEEK for socket channel	2023-02-06 19:22:56 +01:00
test-io-channel-tls.c	Call qemu_socketpair() instead of socketpair() when possible	2023-01-16 17:42:17 +01:00
test-io-task.c
test-iov.c	tests/unit: Replace g_memdup() by g_memdup2()	2022-07-18 20:24:36 +02:00
test-keyval.c	include: add qemu/keyval.h	2022-04-21 17:03:51 +04:00
test-logging.c	util/log: Remove qemu_log_close	2022-04-20 10:51:11 -07:00
test-mul64.c
test-opts-visitor.c
test-qapi-util.c
test-qdev-global-props.c
test-qdist.c
test-qemu-opts.c	qemu-option: remove now-dead code	2021-07-06 08:33:51 +02:00
test-qga.c	tests/unit: test-qga: Avoid using hardcoded /tmp	2022-09-27 20:51:20 +02:00
test-qgraph.c	tests: Remove uses of deprecated raspi2/raspi3 machine names	2021-09-01 11:08:15 +01:00
test-qht.c
test-qmp-cmds.c	tests: add G_GNUC_PRINTF for various functions	2023-01-11 10:44:34 +01:00
test-qmp-event.c	qapi tests: Elide redundant has_FOO in generated C	2022-12-13 18:31:37 +01:00
test-qobject-input-visitor.c	qapi tests: Elide redundant has_FOO in generated C	2022-12-13 18:31:37 +01:00
test-qobject-output-visitor.c	qapi tests: Elide redundant has_FOO in generated C	2022-12-13 18:31:37 +01:00
test-rcu-list.c	Updated the FSF address to <https://www.gnu.org/licenses/>	2023-02-27 09:15:39 +01:00
test-rcu-simpleq.c
test-rcu-slist.c
test-rcu-tailq.c
test-replication.c	replication: move include out of root directory	2021-05-26 14:49:46 +02:00
test-seccomp.c	Don't include headers already included by qemu/osdep.h	2023-02-08 07:28:05 +01:00
test-shift128.c
test-smp-parse.c	tests/unit/test-smp-parse: Keep default MIN/MAX CPUs in machine_base_class_init	2021-12-31 13:42:48 +01:00
test-string-input-visitor.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
test-string-output-visitor.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
test-thread-pool.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
test-throttle.c
test-timed-average.c
test-util-filemonitor.c
test-util-sockets.c	Remove qemu-common.h include from most units	2022-04-06 14:31:55 +02:00
test-uuid.c
test-visitor-serialization.c	qapi tests: Elide redundant has_FOO in generated C	2022-12-13 18:31:37 +01:00
test-vmstate.c	test-vmstate: fix bad GTree usage, use-after-free	2023-03-02 17:06:27 +01:00
test-write-threshold.c	write-threshold: deal with includes	2021-05-14 16:14:10 +02:00
test-x86-cpuid.c
test-xbzrle.c	Update bench-code for addressing CI problem	2023-02-11 16:51:09 +01:00
test-xs-node.c	hw/xen: Add basic XenStore tree walk and write/read/directory support	2023-03-07 17:04:30 +00:00
test-yank.c	qapi: Convert simple union SocketAddressLegacy to flat one	2021-09-27 08:23:25 +02:00