aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2020-01-23virtiofsd: add vhost-user.json fileStefan Hajnoczi
Install a vhost-user.json file describing virtiofsd. This allows libvirt and other management tools to enumerate vhost-user backend programs. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: make -f (foreground) the defaultStefan Hajnoczi
According to vhost-user.rst "Backend program conventions", backend programs should run in the foregound by default. Follow the conventions so libvirt and other management tools can control virtiofsd in a standard way. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: add --fd=FDNUM fd passing optionStefan Hajnoczi
Although --socket-path=PATH is useful for manual invocations, management tools typically create the UNIX domain socket themselves and pass it to the vhost-user device backend. This way QEMU can be launched immediately with a valid socket. No waiting for the vhost-user device backend is required when fd passing is used. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Fast path for virtio readDr. David Alan Gilbert
Readv the data straight into the guests buffer. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> With fix by: Signed-off-by: Eryu Guan <eguan@linux.alibaba.com> Reviewed-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Add Makefile wiring for virtiofsd contribDr. David Alan Gilbert
Wire up the building of the virtiofsd in tools. virtiofsd relies on Linux-specific system calls and seccomp. Anyone wishing to port it to other host operating systems should do so carefully and without reducing security. Only allow building on Linux hosts. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Keep track of repliesDr. David Alan Gilbert
Keep track of whether we sent a reply to a request; this is a bit paranoid but it means: a) We should always recycle an element even if there was an error in the request b) Never try and send two replies on one queue element Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Send replies to messagesDr. David Alan Gilbert
Route fuse out messages back through the same queue elements that had the command that triggered the request. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Start reading commands from queueDr. David Alan Gilbert
Pop queue elements off queues, copy the data from them and pass that to fuse. Note: 'out' in a VuVirtqElement is from QEMU 'in' in libfuse is into the daemon So we read from the out iov's to get a fuse_in_header When we get a kick we've got to read all the elements until the queue is empty. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Poll kick_fd for queueDr. David Alan Gilbert
In the queue thread poll the kick_fd we're passed. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Start queue threadsDr. David Alan Gilbert
Start a thread for each queue when we get notified it's been started. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> fix by: Signed-off-by: Jun Piao <piaojun@huawei.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: get/set features callbacksDr. David Alan Gilbert
Add the get/set features callbacks. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Add main virtio loopDr. David Alan Gilbert
Processes incoming requests on the vhost-user fd. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Start wiring up vhost-userDr. David Alan Gilbert
Listen on our unix socket for the connection from QEMU, when we get it initialise vhost-user and dive into our own loop variant (currently dummy). Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Open vhost connection instead of mountingDr. David Alan Gilbert
When run with vhost-user options we conect to the QEMU instead via a socket. Start this off by creating the socket. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: add -o source=PATH to help outputStefan Hajnoczi
The -o source=PATH option will be used by most command-line invocations. Let's document it! Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Add options for virtioDr. David Alan Gilbert
Add options to specify parameters for virtio-fs paths, i.e. ./virtiofsd -o vhost_user_socket=/tmp/vhostqemu Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Make fsync work even if only inode is passed inVivek Goyal
If caller has not sent file handle in request, then using inode, retrieve the fd opened using O_PATH and use that to open file again and issue fsync. This will be needed when dax_flush() calls fsync. At that time we only have inode information (and not file). Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23vitriofsd/passthrough_ll: fix fallocate() ifdefsXiao Yang
1) Use correct CONFIG_FALLOCATE macro to check if fallocate() is supported.(i.e configure script sets CONFIG_FALLOCATE intead of HAVE_FALLOCATE if fallocate() is supported) 2) Replace HAVE_POSIX_FALLOCATE with CONFIG_POSIX_FALLOCATE. Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Merged from two of Xiao Yang's patches
2020-01-23virtiofsd: Trim out compatibility codeDr. David Alan Gilbert
virtiofsd only supports major=7, minor>=31; trim out a lot of old compatibility code. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Fix common header and define for QEMU buildsDr. David Alan Gilbert
All of the fuse files include config.h and define GNU_SOURCE where we don't have either under our build - remove them. Fixup path to the kernel's fuse.h in the QEMUs world. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Fix fuse_daemonize ignored return valuesDr. David Alan Gilbert
QEMU's compiler enables warnings/errors for ignored values and the (void) trick used in the fuse code isn't enough. Turn all the return values into a return value on the function. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Remove unused enum fuse_buf_copy_flagsXiao Yang
Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: remove unused notify reply supportStefan Hajnoczi
Notify reply support is unused by virtiofsd. The code would need to be updated to validate input buffer sizes. Remove this unused code since changes to it are untestable. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: remove mountpoint dummy argumentStefan Hajnoczi
Classic FUSE file system daemons take a mountpoint argument but virtiofsd exposes a vhost-user UNIX domain socket instead. The mountpoint argument is not used by virtiofsd but the user is still required to pass a dummy argument on the command-line. Remove the mountpoint argument to clean up the command-line. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Format imported files to qemu styleDr. David Alan Gilbert
Mostly using a set like: indent -nut -i 4 -nlp -br -cs -ce --no-space-after-function-call-names file clang-format -style=file -i -- file clang-tidy -fix-errors -checks=readability-braces-around-statements file clang-format -style=file -i -- file With manual cleanups. The .clang-format used is below. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed by: Aleksandar Markovic <amarkovic@wavecomp.com> Language: Cpp AlignAfterOpenBracket: Align AlignConsecutiveAssignments: false # although we like it, it creates churn AlignConsecutiveDeclarations: false AlignEscapedNewlinesLeft: true AlignOperands: true AlignTrailingComments: false # churn AllowAllParametersOfDeclarationOnNextLine: true AllowShortBlocksOnASingleLine: false AllowShortCaseLabelsOnASingleLine: false AllowShortFunctionsOnASingleLine: None AllowShortIfStatementsOnASingleLine: false AllowShortLoopsOnASingleLine: false AlwaysBreakAfterReturnType: None # AlwaysBreakAfterDefinitionReturnType is taken into account AlwaysBreakBeforeMultilineStrings: false BinPackArguments: true BinPackParameters: true BraceWrapping: AfterControlStatement: false AfterEnum: false AfterFunction: true AfterStruct: false AfterUnion: false BeforeElse: false IndentBraces: false BreakBeforeBinaryOperators: None BreakBeforeBraces: Custom BreakBeforeTernaryOperators: false BreakStringLiterals: true ColumnLimit: 80 ContinuationIndentWidth: 4 Cpp11BracedListStyle: false DerivePointerAlignment: false DisableFormat: false ForEachMacros: [ 'CPU_FOREACH', 'CPU_FOREACH_REVERSE', 'CPU_FOREACH_SAFE', 'IOMMU_NOTIFIER_FOREACH', 'QLIST_FOREACH', 'QLIST_FOREACH_ENTRY', 'QLIST_FOREACH_RCU', 'QLIST_FOREACH_SAFE', 'QLIST_FOREACH_SAFE_RCU', 'QSIMPLEQ_FOREACH', 'QSIMPLEQ_FOREACH_SAFE', 'QSLIST_FOREACH', 'QSLIST_FOREACH_SAFE', 'QTAILQ_FOREACH', 'QTAILQ_FOREACH_REVERSE', 'QTAILQ_FOREACH_SAFE', 'QTAILQ_RAW_FOREACH', 'RAMBLOCK_FOREACH' ] IncludeCategories: - Regex: '^"qemu/osdep.h' Priority: -3 - Regex: '^"(block|chardev|crypto|disas|exec|fpu|hw|io|libdecnumber|migration|monitor|net|qapi|qemu|qom|standard-headers|sysemu|ui)/' Priority: -2 - Regex: '^"(elf.h|qemu-common.h|glib-compat.h|qemu-io.h|trace-tcg.h)' Priority: -1 - Regex: '.*' Priority: 1 IncludeIsMainRegex: '$' IndentCaseLabels: false IndentWidth: 4 IndentWrappedFunctionNames: false KeepEmptyLinesAtTheStartOfBlocks: false MacroBlockBegin: '.*_BEGIN$' # only PREC_BEGIN ? MacroBlockEnd: '.*_END$' MaxEmptyLinesToKeep: 2 PointerAlignment: Right ReflowComments: true SortIncludes: true SpaceAfterCStyleCast: false SpaceBeforeAssignmentOperators: true SpaceBeforeParens: ControlStatements SpaceInEmptyParentheses: false SpacesBeforeTrailingComments: 1 SpacesInContainerLiterals: true SpacesInParentheses: false SpacesInSquareBrackets: false Standard: Auto UseTab: Never ... Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Trim down imported filesDr. David Alan Gilbert
There's a lot of the original fuse code we don't need; trim them down. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> with additional trimming by: Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Xiao Yang <yangx.jy@cn.fujitsu.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Add passthrough_llDr. David Alan Gilbert
passthrough_ll is one of the examples in the upstream fuse project and is the main part of our daemon here. It passes through requests from fuse to the underlying filesystem, using syscalls as directly as possible. From libfuse fuse-3.8.0 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Fixed up 'GPL' to 'GPLv2' as per Dan's comments and consistent with the 'LICENSE' file in libfuse; patch sent to libfuse to fix it upstream. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Add fuse_lowlevel.cDr. David Alan Gilbert
fuse_lowlevel is one of the largest files from the library and does most of the work. Add it separately to keep the diff sizes small. Again this is from upstream fuse-3.8.0 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Add auxiliary .c'sDr. David Alan Gilbert
Add most of the non-main .c files we need from upstream fuse-3.8.0 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Pull in kernel's fuse.hDr. David Alan Gilbert
Update scripts/update-linux-headers.sh to add fuse.h and use it to pull in fuse.h from the kernel; from v5.5-rc1 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23virtiofsd: Pull in upstream headersDr. David Alan Gilbert
Pull in headers fromlibfuse's upstream fuse-3.8.0 Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-5.0-pull-request' into staging Fix mmap guest space and brk Add FS/FD/RTC/KCOV ioctls # gpg: Signature made Thu 23 Jan 2020 08:21:41 GMT # gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C # gpg: issuer "laurent@vivier.eu" # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full] # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/linux-user-for-5.0-pull-request: linux-user: Add support for read/clear RTC voltage low detector using ioctls linux-user: Add support for getting/setting RTC PLL correction using ioctls linux-user: Add support for getting/setting RTC wakeup alarm using ioctls linux-user: Add support for getting/setting RTC periodic interrupt and epoch using ioctls linux-user: Add support for getting/setting RTC time and alarm using ioctls linux-user: Add support for enabling/disabling RTC features using ioctls linux-user: Add support for TYPE_LONG and TYPE_ULONG in do_ioctl() linux-user: Add support for KCOV_INIT_TRACE ioctl linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls configure: Detect kcov support and introduce CONFIG_KCOV linux-user: Add support for FDFMT<BEG|TRK|END> ioctls linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls linux-user: Add support for FS_IOC32_<GET|SET>VERSION ioctls linux-user: Add support for FS_IOC32_<GET|SET>FLAGS ioctls linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctls linux-user: Reserve space for brk linux-user:Fix align mistake when mmap guest space Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-23Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell
virtio, pc: fixes, features Bugfixes all over the place. CPU hotplug with secureboot. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Thu 23 Jan 2020 07:08:32 GMT # gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469 # gpg: issuer "mst@redhat.com" # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full] # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full] # Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67 # Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469 * remotes/mst/tags/for_upstream: vhost: coding style fix i386:acpi: Remove _HID from the SMBus ACPI entry vhost: Only align sections for vhost-user vhost: Add names to section rounded warning vhost-vsock: delete vqs in vhost_vsock_unrealize to avoid memleaks virtio-scsi: convert to new virtio_delete_queue virtio-scsi: delete vqs in unrealize to avoid memleaks virtio-9p-device: convert to new virtio_delete_queue virtio-9p-device: fix memleak in virtio_9p_device_unrealize bios-tables-test: document expected file update acpi: cpuhp: add CPHP_GET_CPU_ID_CMD command acpi: cpuhp: spec: add typical usecases acpi: cpuhp: introduce 'Command data 2' field acpi: cpuhp: spec: clarify store into 'Command data' when 'Command field' == 0 acpi: cpuhp: spec: fix 'Command data' description acpi: cpuhp: spec: clarify 'CPU selector' register usage and endianness tests: q35: MCH: add default SMBASE SMRAM lock test q35: implement 128K SMRAM at default SMBASE address Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-23Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20200121' into stagingPeter Maydell
Remove another limit to NB_MMU_MODES. Fix compilation using uclibc. Fix defaulting of -accel parameters. Tidy cputlb basic routines. Adjust git.orderfile for decodetree. # gpg: Signature made Wed 22 Jan 2020 02:44:18 GMT # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full] # Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F * remotes/rth/tags/pull-tcg-20200121: scripts/git.orderfile: Display decodetree before C source cputlb: Hoist timestamp outside of loops over tlbs cputlb: Initialize tlbs as flushed cputlb: Partially merge tlb_dyn_init into tlb_init cputlb: Split out tlb_mmu_flush_locked cputlb: Hoist tlb portions in tlb_flush_one_mmuidx_locked cputlb: Hoist tlb portions in tlb_mmu_resize_locked cputlb: Pass CPUTLBDescFast to tlb_n_entries and sizeof_tlb cputlb: Make tlb_n_entries private to cputlb.c cputlb: Merge tlb_table_flush_by_mmuidx into tlb_flush_one_mmuidx_locked vl: Only choose enabled accelerators in configure_accelerators vl: Remove useless test in configure_accelerators vl: Reduce scope of variables in configure_accelerators vl: Remove unused variable in configure_accelerators util/cacheinfo: fix crash when compiling with uClibc cputlb: Handle NB_MMU_MODES > TARGET_PAGE_BITS_MIN Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-01-23vhost: coding style fixMichael S. Tsirkin
Drop a trailing whitespace. Make line shorter. Fixes: 76525114736e8 ("vhost: Only align sections for vhost-user") Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-22linux-user: Add support for read/clear RTC voltage low detector using ioctlsFilip Bozuta
This patch implements functionalities of following ioctls: RTC_VL_READ - Read voltage low detection information Read the voltage low for RTCs that support voltage low. The third ioctl's' argument points to an int in which the voltage low is returned. RTC_VL_CLR - Clear voltage low information Clear the information about voltage low for RTCs that support voltage low. The third ioctl(2) argument is ignored. Implementation notes: Since one ioctl has a pointer to 'int' as its third agrument, and another ioctl has NULL as its third argument, their implementation was straightforward. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com> Message-Id: <1579117007-7565-7-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for getting/setting RTC PLL correction using ioctlsFilip Bozuta
This patch implements functionalities of following ioctls: RTC_PLL_GET - Getting PLL correction Read the PLL correction for RTCs that support PLL. The PLL correction is returned in the following structure: struct rtc_pll_info { int pll_ctrl; /* placeholder for fancier control */ int pll_value; /* get/set correction value */ int pll_max; /* max +ve (faster) adjustment value */ int pll_min; /* max -ve (slower) adjustment value */ int pll_posmult; /* factor for +ve correction */ int pll_negmult; /* factor for -ve correction */ long pll_clock; /* base PLL frequency */ }; A pointer to this structure should be passed as the third ioctl's argument. RTC_PLL_SET - Setting PLL correction Sets the PLL correction for RTCs that support PLL. The PLL correction that is set is specified by the rtc_pll_info structure pointed to by the third ioctl's' argument. Implementation notes: All ioctls in this patch have a pointer to a structure rtc_pll_info as their third argument. All elements of this structure are of type 'int', except the last one that is of type 'long'. That is the reason why a separate target structure (target_rtc_pll_info) is defined in linux-user/syscall_defs. The rest of the implementation is straightforward. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com> Message-Id: <1579117007-7565-6-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for getting/setting RTC wakeup alarm using ioctlsFilip Bozuta
This patch implements functionalities of following ioctls: RTC_WKALM_SET, RTC_WKALM_GET - Getting/Setting wakeup alarm Some RTCs support a more powerful alarm interface, using these ioctls to read or write the RTC's alarm time (respectively) with this structure: struct rtc_wkalrm { unsigned char enabled; unsigned char pending; struct rtc_time time; }; The enabled flag is used to enable or disable the alarm interrupt, or to read its current status; when using these calls, RTC_AIE_ON and RTC_AIE_OFF are not used. The pending flag is used by RTC_WKALM_RD to report a pending interrupt (so it's mostly useless on Linux, except when talking to the RTC managed by EFI firmware). The time field is as used with RTC_ALM_READ and RTC_ALM_SET except that the tm_mday, tm_mon, and tm_year fields are also valid. A pointer to this structure should be passed as the third ioctl's argument. Implementation notes: All ioctls in this patch have a pointer to a structure rtc_wkalrm as their third argument. That is the reason why corresponding definition is added in linux-user/syscall_types.h. Since all elements of this structure are either of type 'unsigned char' or 'struct rtc_time' (that was covered in one of previous patches), the rest of the implementation is straightforward. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com> Message-Id: <1579117007-7565-5-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for getting/setting RTC periodic interrupt and epoch ↵Filip Bozuta
using ioctls This patch implements functionalities of following ioctls: RTC_IRQP_READ, RTC_IRQP_SET - Getting/Setting IRQ rate Read and set the frequency for periodic interrupts, for RTCs that support periodic interrupts. The periodic interrupt must be separately enabled or disabled using the RTC_PIE_ON, RTC_PIE_OFF requests. The third ioctl's argument is an unsigned long * or an unsigned long, respectively. The value is the frequency in interrupts per second. The set of allow‐ able frequencies is the multiples of two in the range 2 to 8192. Only a privileged process (i.e., one having the CAP_SYS_RESOURCE capability) can set frequencies above the value specified in /proc/sys/dev/rtc/max-user-freq. (This file contains the value 64 by default.) RTC_EPOCH_READ, RTC_EPOCH_SET - Getting/Setting epoch Many RTCs encode the year in an 8-bit register which is either interpreted as an 8-bit binary number or as a BCD number. In both cases, the number is interpreted relative to this RTC's Epoch. The RTC's Epoch is initialized to 1900 on most systems but on Alpha and MIPS it might also be initialized to 1952, 1980, or 2000, depending on the value of an RTC register for the year. With some RTCs, these operations can be used to read or to set the RTC's Epoch, respectively. The third ioctl's argument is an unsigned long * or an unsigned long, respectively, and the value returned (or assigned) is the Epoch. To set the RTC's Epoch the process must be privileged (i.e., have the CAP_SYS_TIME capability). Implementation notes: All ioctls in this patch have a pointer to 'ulong' as their third argument. That is the reason why corresponding parts of added code in linux-user/syscall_defs.h contain special handling related to 'ulong' type: they use 'abi_ulong' type to make sure that ioctl's code is calculated correctly for both 32-bit and 64-bit targets. Also, 'MK_PTR(TYPE_ULONG)' is used for the similar reason in linux-user/ioctls.h. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com> Message-Id: <1579117007-7565-4-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for getting/setting RTC time and alarm using ioctlsFilip Bozuta
This patch implements functionalities of following ioctls: RTC_RD_TIME - Getting RTC time Returns this RTC's time in the following structure: struct rtc_time { int tm_sec; int tm_min; int tm_hour; int tm_mday; int tm_mon; int tm_year; int tm_wday; /* unused */ int tm_yday; /* unused */ int tm_isdst; /* unused */ }; The fields in this structure have the same meaning and ranges as the tm structure described in gmtime man page. A pointer to this structure should be passed as the third ioctl's argument. RTC_SET_TIME - Setting RTC time Sets this RTC's time to the time specified by the rtc_time structure pointed to by the third ioctl's argument. To set the RTC's time the process must be privileged (i.e., have the CAP_SYS_TIME capability). RTC_ALM_READ, RTC_ALM_SET - Getting/Setting alarm time Read and set the alarm time, for RTCs that support alarms. The alarm interrupt must be separately enabled or disabled using the RTC_AIE_ON, RTC_AIE_OFF requests. The third ioctl's argument is a pointer to a rtc_time structure. Only the tm_sec, tm_min, and tm_hour fields of this structure are used. Implementation notes: All ioctls in this patch have pointer to a structure rtc_time as their third argument. That is the reason why corresponding definition is added in linux-user/syscall_types.h. Since all elements of this structure are of type 'int', the rest of the implementation is straightforward. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com> Message-Id: <1579117007-7565-3-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for enabling/disabling RTC features using ioctlsFilip Bozuta
This patch implements functionalities of following ioctls: RTC_AIE_ON, RTC_AIE_OFF - Alarm interrupt enabling on/off Enable or disable the alarm interrupt, for RTCs that support alarms. The third ioctl's argument is ignored. RTC_UIE_ON, RTC_UIE_OFF - Update interrupt enabling on/off Enable or disable the interrupt on every clock update, for RTCs that support this once-per-second interrupt. The third ioctl's argument is ignored. RTC_PIE_ON, RTC_PIE_OFF - Periodic interrupt enabling on/off Enable or disable the periodic interrupt, for RTCs that sup‐ port these periodic interrupts. The third ioctl's argument is ignored. Only a privileged process (i.e., one having the CAP_SYS_RESOURCE capability) can enable the periodic interrupt if the frequency is currently set above the value specified in /proc/sys/dev/rtc/max-user-freq. RTC_WIE_ON, RTC_WIE_OFF - Watchdog interrupt enabling on/off Enable or disable the Watchdog interrupt, for RTCs that sup- port this Watchdog interrupt. The third ioctl's argument is ignored. Implementation notes: Since all of involved ioctls have NULL as their third argument, their implementation was straightforward. The line '#include <linux/rtc.h>' was added to recognize preprocessor definitions for these ioctls. This needs to be done only once in this series of commits. Also, the content of this file (with respect to ioctl definitions) remained unchanged for a long time, therefore there is no need to worry about supporting older Linux kernel version. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com> Message-Id: <1579117007-7565-2-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for TYPE_LONG and TYPE_ULONG in do_ioctl()Filip Bozuta
Function "do_ioctl()" located in file "syscall.c" was missing an option for TYPE_LONG and TYPE_ULONG. This caused some ioctls to not be recognised because they had the third argument that was of type 'long' or 'unsigned long'. For example: Since implemented ioctls RTC_IRQP_SET and RTC_EPOCH_SET are of type IOW(writing type) that have unsigned long as their third argument, they were not recognised in QEMU before the changes of this patch. Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1579117007-7565-14-git-send-email-Filip.Bozuta@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for KCOV_INIT_TRACE ioctlAleksandar Markovic
KCOV_INIT_TRACE ioctl plays the role in kernel coverage tracing. This ioctl's third argument is of type 'unsigned long', and the implementation in QEMU is straightforward. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579214991-19602-13-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctlsAleksandar Markovic
KCOV_ENABLE and KCOV_DISABLE play the role in kernel coverage tracing. These ioctls do not use the third argument of ioctl() system call and are straightforward to implement in QEMU. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579214991-19602-12-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22configure: Detect kcov support and introduce CONFIG_KCOVAleksandar Markovic
kcov is kernel code coverage tracing tool. It requires kernel 4.4+ compiled with certain kernel options. This patch checks if kcov header "sys/kcov.h" is present on build machine, and stores the result in variable CONFIG_KCOV, meant to be used in linux-user code related to the support for three ioctls that were introduced at the same time as the mentioned header (their definition was a part of the first version of that header). Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1579214991-19602-11-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for FDFMT<BEG|TRK|END> ioctlsAleksandar Markovic
FDFMTBEG, FDFMTTRK, and FDFMTEND ioctls provide means for controlling formatting of a floppy drive. FDFMTTRK's third agrument is a pointer to the structure: struct format_descr { unsigned int device,head,track; }; defined in Linux kernel header <linux/fd.h>. Since all fields of the structure are of type 'unsigned int', there is no need to define "target_format_descr". FDFMTBEG and FDFMTEND ioctls do not use the third argument. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579214991-19602-9-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctlsAleksandar Markovic
FDSETEMSGTRESH, FDSETMAXERRS, and FDGETMAXERRS ioctls are commands for controlling error reporting of a floppy drive. FDSETEMSGTRESH's third agrument is a pointer to the structure: struct floppy_max_errors { unsigned int abort, /* number of errors to be reached before aborting */ read_track, /* maximal number of errors permitted to read an * entire track at once */ reset, /* maximal number of errors before a reset is tried */ recal, /* maximal number of errors before a recalibrate is * tried */ /* * Threshold for reporting FDC errors to the console. * Setting this to zero may flood your screen when using * ultra cheap floppies ;-) */ reporting; }; defined in Linux kernel header <linux/fd.h>. Since all fields of the structure are of type 'unsigned int', there is no need to define "target_floppy_max_errors". FDSETMAXERRS and FDGETMAXERRS ioctls do not use the third argument. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579214991-19602-8-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for FS_IOC32_<GET|SET>VERSION ioctlsAleksandar Markovic
These FS_IOC32_<GET|SET>VERSION ioctls are identical to FS_IOC_<GET|SET>VERSION ioctls, but without the anomaly of their number defined as if their third argument is of type long, while it is treated internally in kernel as is of type int. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579214991-19602-4-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for FS_IOC32_<GET|SET>FLAGS ioctlsAleksandar Markovic
These FS_IOC32_<GET|SET>FLAGS ioctls are identical to FS_IOC_<GET|SET>FLAGS ioctls, but without the anomaly of their number defined as if their third argument is of type long, while it is treated internally in kernel as is of type int. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579214991-19602-3-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-22linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctlsAleksandar Markovic
A very specific thing for these two ioctls is that their code implies that their third argument is of type 'long', but the kernel uses that argument as if it is of type 'int'. This anomaly is recognized also in commit 6080723 (linux-user: Implement FS_IOC_GETFLAGS and FS_IOC_SETFLAGS ioctls). Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <1579214991-19602-2-git-send-email-aleksandar.markovic@rt-rk.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-15 14:35:37 +0000