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Mark Johnston 6657f3bb55 9pfs: Add FreeBSD support 
This is largely derived from existing Darwin support.  FreeBSD
apparently has better support for *at() system calls so doesn't require
workarounds for a missing mknodat().  The implementation has a couple of
warts however:
- The extattr(2) system calls don't support anything akin to
  XATTR_CREATE or XATTR_REPLACE, so a racy workaround is implemented.
- Attribute names cannot begin with "user." or "system." on ZFS.
  However FreeBSD's extattr(2) system calls support two dedicated
  namespaces for these two.  So "user." or "system." prefixes are
  trimmed off from attribute names and instead EXTATTR_NAMESPACE_USER or
  EXTATTR_NAMESPACE_SYSTEM are picked and passed to extattr system calls
  accordingly.

The 9pfs tests were verified to pass on the UFS, ZFS and tmpfs
filesystems.

Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Link: https://lore.kernel.org/qemu-devel/aJOWhHB2p-fbueAm@nuc
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
2025-09-18 21:21:29 +02:00
..
accel.h accel: Extract AccelClass definition to 'accel/accel-ops.h' 2025-07-15 19:34:33 +02:00
async-teardown.h Don't include headers already included by qemu/osdep.h 2023-02-08 07:28:05 +01:00
atomic.h tcg: Remove TCG_OVERSIZED_GUEST 2025-02-18 07:33:42 -08:00
atomic128.h qemu/atomic128: Include missing 'qemu/atomic.h' header 2025-03-08 09:35:06 -08:00
base64.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
bcd.h
bitmap.h bitops.h: Define bit operations on 'uint32_t' arrays 2024-11-19 13:02:06 +00:00
bitops.h bitops.h: Define bit operations on 'uint32_t' arrays 2024-11-19 13:02:06 +00:00
bswap.h qemu: Declare all load/store helper in 'qemu/bswap.h' 2025-07-15 02:56:39 -04:00
buffer.h Replace GCC_FMT_ATTR with G_GNUC_PRINTF 2022-03-22 14:40:51 +04:00
cacheflush.h util/cacheflush.c: Update cache flushing mechanism for Emscripten 2025-05-06 16:02:04 +02:00
cacheinfo.h include: Move qemu_[id]cache_* declarations to new qemu/cacheinfo.h 2022-02-21 13:30:20 +00:00
chardev_open.h util/char_dev: Add open_cdev() 2023-12-19 19:03:38 +01:00
co-shared-resource.h util/co-shared-resource: Remove unused co_try_get_from_shres 2024-09-30 10:53:18 +03:00
compiler.h host-utils: Drop workaround for buggy Apple Clang __builtin_subcll() 2025-07-21 10:07:53 +01:00
config-file.h util/qemu-config: Extract QMP commands to qemu-config-qmp.c 2024-04-18 11:17:27 +02:00
coroutine-core.h Rename "QEMU global mutex" to "BQL" in comments and docs 2024-01-08 10:45:43 -05:00
coroutine-tls.h tls: add macros for coroutine-safe TLS variables 2022-03-04 18:14:40 +01:00
coroutine.h qemu/coroutine: Include missing 'qemu/atomic.h' header 2024-12-20 17:44:57 +01:00
coroutine_int.h coroutine: support SafeStack in ucontext backend 2020-06-23 15:46:05 +01:00
cpu-float.h Clean up ill-advised or unusual header guards 2022-05-11 16:50:01 +02:00
cpuid.h cpuinfo/i386: Detect GFNI as an AVX extension 2025-09-04 09:49:23 +02:00
crc-ccitt.h license: Update deprecated SPDX tag GPL-2.0 to GPL-2.0-only 2024-09-20 10:11:59 +03:00
crc32c.h igb: Implement Rx SCTP CSO 2023-05-23 15:20:15 +08:00
ctype.h
cutils.h hw/vmapple/aes: Introduce aes engine 2025-03-04 14:45:34 +01:00
datadir.h system/datadir: Add new type constant for DTB files 2025-04-25 17:09:58 +02:00
dbus.h Don't include headers already included by qemu/osdep.h 2023-02-08 07:28:05 +01:00
defer-call.h util/defer-call: move defer_call() to util/ 2023-10-31 15:41:42 +01:00
drm.h
envlist.h envlist: Remove unused envlist_parse 2024-09-20 10:00:27 +03:00
error-report.h Move error_printf_unless_qmp() with monitor unit 2022-04-21 17:09:09 +04:00
event_notifier.h event_notifier: add event_notifier_get_wfd() 2022-03-06 06:19:47 -05:00
fifo8.h fifo8: introduce fifo8_peek() function 2024-09-13 20:11:13 +02:00
fifo32.h
filemonitor.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
futex.h futex: Support Windows 2025-06-06 14:32:55 +02:00
guest-random.h util/guest-random: Clean up global variable shadowing 2023-10-06 13:27:48 +02:00
hbitmap.h hbitmap: fix hbitmap_status() return value for first dirty bit case 2023-02-17 14:34:24 +01:00
help-texts.h docs: update copyright date to the year 2025 2025-01-02 07:44:28 +01:00
help_option.h keyval: Parse help options 2020-10-15 16:06:27 +02:00
host-pci-mmio.h include: Add a header to define host PCI MMIO functions 2025-05-08 10:21:10 -04:00
host-utils.h host-utils: Drop workaround for buggy Apple Clang __builtin_subcll() 2025-07-21 10:07:53 +01:00
hw-version.h include: Move hardware version declarations to new qemu/hw-version.h 2022-02-21 13:30:20 +00:00
id.h net: Use id_generate() in the network subsystem, too 2021-03-09 21:47:45 +01:00
int128.h host/include/generic/host/atomic128: Fix compilation problem with Clang 17 2023-11-13 11:35:47 +01:00
interval-tree.h util: Add interval-tree.c 2022-12-20 17:09:41 -08:00
iov.h util/iov: Do not assert offset is in iov 2025-03-10 17:07:16 +08:00
iova-tree.h include/system: Move exec/memory.h to system/memory.h 2025-04-23 14:08:21 -07:00
jhash.h
job.h block/commit: mark commit_abort() as GRAPH_UNLOCKED 2025-07-14 15:42:13 +02:00
keyval.h Clean up ill-advised or unusual header guards 2022-05-11 16:50:01 +02:00
lockable.h lockable: Do not cast function pointers 2024-05-29 12:41:56 +02:00
lockcnt.h qemu-thread: Use futex if available for QemuLockCnt 2025-06-06 14:32:55 +02:00
log-for-trace.h util/log: Drop return value from qemu_log 2022-04-20 10:51:11 -07:00
log.h rust/qemu-api: log: implement io::Write 2025-07-10 18:33:51 +02:00
madvise.h include: Move qemu_madvise() and related #defines to new qemu/madvise.h 2022-02-21 13:30:20 +00:00
main-loop.h Accel & Exec patch queue 2024-12-21 11:07:00 -05:00
memalign.h osdep: Move memalign-related functions to their own header 2022-03-07 13:16:49 +00:00
memfd.h linux-user: add memfd_create 2019-09-11 08:46:17 +02:00
mmap-alloc.h util/mmap-alloc: qemu_fd_getfs() 2023-04-24 11:29:00 +02:00
module.h module: add Error arguments to module_load and module_load_qom 2022-11-06 09:48:50 +01:00
mprotect.h include: Move qemu_mprotect_*() to new qemu/mprotect.h 2022-02-21 13:30:20 +00:00
notify.h migration: convert to NotifierWithReturn 2024-02-28 11:31:28 +08:00
nvdimm-utils.h Clean up includes 2020-12-10 17:16:44 +01:00
option.h qemu-option: remove QemuOpt from typedefs.h 2024-05-03 15:47:48 +02:00
option_int.h
osdep.h linux-user: Move ppc uabi/asm/elf.h workaround to osdep.h 2025-08-28 06:39:25 +10:00
path.h
plugin-event.h include/qemu: Split out plugin-event.h 2023-03-22 15:06:57 +00:00
plugin-memory.h include/qemu: plugin-memory.h doesn't need cpu-defs.h 2025-03-10 10:30:01 +00:00
plugin.h plugins: Add enforcement of QEMU_PLUGIN_CB flags in register R/W callbacks 2025-07-02 10:09:48 +01:00
pmem.h include/qemu: remove return after g_assert_not_reached() 2024-09-24 13:53:35 +02:00
processor.h qemu/processor: Remove unused 'qemu/atomic.h' header 2023-08-31 19:47:43 +02:00
progress_meter.h coroutine: Clean up superfluous inclusion of qemu/lockable.h 2023-01-19 10:18:28 +01:00
qdist.h
qemu-plugin.h plugins: Update plugin version and add notes 2025-07-02 10:09:48 +01:00
qemu-print.h Replace GCC_FMT_ATTR with G_GNUC_PRINTF 2022-03-22 14:40:51 +04:00
qemu-progress.h include: move progress API to qemu-progress.h 2022-04-06 14:31:43 +02:00
qht.h
qsp.h
qtree.h include: Clean up includes 2024-01-30 21:20:20 +03:00
queue.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
range.h util/range: Make ranges_overlap() return bool 2024-07-23 20:30:36 +02:00
ratelimit.h ratelimit: treat zero speed as unlimited 2021-06-25 14:22:21 +03:00
rcu.h include/qemu: replace FSF postal address with licenses URL 2025-06-26 00:42:37 +02:00
rcu_queue.h include/qemu: replace FSF postal address with licenses URL 2025-06-26 00:42:37 +02:00
readline.h readline: Extract readline_add_completion_of() from monitor 2023-02-04 07:56:54 +01:00
reserved-region.h include/system: Move exec/memory.h to system/memory.h 2025-04-23 14:08:21 -07:00
s390x_pci_mmio.h util: Add functions for s390x mmio read/write 2025-05-08 10:03:07 -04:00
selfmap.h util/selfmap: Use dev_t and ino_t in MapInfo 2023-09-01 13:34:03 -07:00
seqlock.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
sockets.h sockets: Remove deadcode 2024-10-22 11:44:23 +01:00
stats64.h stat64: Add stat64_set() operation 2023-04-27 16:39:43 +02:00
sys_membarrier.h bulk: Do not declare function prototypes using 'extern' keyword 2023-08-31 19:47:43 +02:00
systemd.h
target-info-impl.h qemu/target-info: Add target_endian_mode() 2025-07-15 02:56:39 -04:00
target-info-qapi.h qemu/target-info: Add target_endian_mode() 2025-07-15 02:56:39 -04:00
target-info.h qemu: Convert target_words_bigendian() to TargetInfo API 2025-07-15 02:56:39 -04:00
thread-context.h util: Introduce ThreadContext user-creatable object 2022-10-27 11:00:43 +02:00
thread-posix.h qemu-thread: Use futex for QemuEvent on Windows 2025-06-06 14:32:55 +02:00
thread-win32.h qemu-thread: Use futex for QemuEvent on Windows 2025-06-06 14:32:55 +02:00
thread.h qemu-thread: Document QemuEvent 2025-06-06 14:32:55 +02:00
throttle-options.h
throttle.h throttle: use enum ThrottleDirection instead of bool is_write 2023-08-29 10:49:24 +02:00
timed-average.h license: Simplify GPL-2.0-or-later license descriptions 2024-09-20 10:11:59 +03:00
timer.h qemu/timer: Clarify timer_new*() must be freed with timer_free() 2025-02-14 08:49:06 +03:00
transactions.h transactions: Invoke clean() after everything else 2021-11-16 09:43:44 +01:00
tsan.h include/qemu: Added tsan.h for annotations. 2020-06-16 14:49:05 +01:00
typedefs.h migration: Rename save_live_complete_precopy_thread to save_complete_precopy_thread 2025-07-11 10:37:39 -03:00
unicode.h
units.h
userfaultfd.h util/userfaultfd: Remove unused uffd_poll_events 2024-10-08 15:28:55 -04:00
uuid.h util/uuid: Define UUID_STR_LEN from UUID_NONE string 2023-11-03 09:20:31 +01:00
vfio-helpers.h util/vfio-helpers: Pass Error handle to qemu_vfio_dma_map() 2021-09-07 09:08:24 +01:00
vhost-user-server.h export/vhost-user-blk: Fix consecutive drains 2023-11-28 14:56:32 +01:00
win_dump_defs.h include/qemu: add 32-bit Windows dump structures 2022-04-22 13:36:04 +04:00
xattr.h 9pfs: Add FreeBSD support 2025-09-18 21:21:29 +02:00
xxhash.h accel/tcg: include cs_base in our hash calculations 2023-06-01 11:05:05 -04:00
yank.h qapi: Fix dangling references to docs/devel/qapi-code-gen.txt 2024-01-26 07:04:53 +01:00