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Mon, 15 Dec 2025 08:57:05 -0800 (PST) From: phind.uet@gmail.com To: Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Kostiantyn Kostiuk , Michael Roth Cc: Nguyen Dinh Phi , qemu-devel@nongnu.org Subject: [PATCH 1/2] qga/vss-win32: Fix ConvertStringToBSTR redefinition with newer MinGW Date: Tue, 16 Dec 2025 00:45:11 +0800 Message-ID: <20251215164512.322786-2-phind.uet@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251215164512.322786-1-phind.uet@gmail.com> References: <20251215164512.322786-1-phind.uet@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::636; envelope-from=phind.uet@gmail.com; helo=mail-pl1-x636.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1765825992266158501 Content-Type: text/plain; charset="utf-8" From: Nguyen Dinh Phi Newer versions of MinGW-w64 provide ConvertStringToBSTR() in the _com_util namespace via . This causes a redefinition error when building qemu-ga on Windows with these toolchains. Add a meson check to detect whether ConvertStringToBSTR is already available, and conditionally compile our fallback implementation only when the system does not provide one. Signed-off-by: Nguyen Dinh Phi Reviewed-by: Kostiantyn Kostiuk Reviewed-by: Marc-Andr=C3=A9 Lureau --- meson.build | 12 ++++++++++++ qga/vss-win32/install.cpp | 2 ++ 2 files changed, 14 insertions(+) diff --git a/meson.build b/meson.build index c5710a6a47..60a980e610 100644 --- a/meson.build +++ b/meson.build @@ -3299,6 +3299,18 @@ endif # Detect host pointer size for the target configuration loop. host_long_bits =3D cc.sizeof('void *') * 8 =20 +# Detect if ConvertStringToBSTR has been defined in _com_util namespace +if host_os =3D=3D 'windows' + has_convert_string_to_bstr =3D cxx.compiles(''' + #include + int main() { + BSTR b =3D _com_util::ConvertStringToBSTR("test"); + return b ? 0 : 1; + } + ''') + config_host_data.set('CONFIG_CONVERT_STRING_TO_BSTR', has_convert_string= _to_bstr) +endif + ######################## # Target configuration # ######################## diff --git a/qga/vss-win32/install.cpp b/qga/vss-win32/install.cpp index 7b25d9098b..5b7a8e9bc5 100644 --- a/qga/vss-win32/install.cpp +++ b/qga/vss-win32/install.cpp @@ -549,6 +549,7 @@ STDAPI DllUnregisterServer(void) =20 =20 /* Support function to convert ASCII string into BSTR (used in _bstr_t) */ +#ifndef CONFIG_CONVERT_STRING_TO_BSTR namespace _com_util { BSTR WINAPI ConvertStringToBSTR(const char *ascii) { @@ -566,6 +567,7 @@ namespace _com_util return bstr; 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Mon, 15 Dec 2025 08:57:08 -0800 (PST) From: phind.uet@gmail.com To: Kevin Wolf , Hanna Reitz , Stefan Weil Cc: Nguyen Dinh Phi , qemu-block@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 2/2] util: Move qemu_ftruncate64 from block/file-win32.c to oslib-win32.c Date: Tue, 16 Dec 2025 00:45:12 +0800 Message-ID: <20251215164512.322786-3-phind.uet@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251215164512.322786-1-phind.uet@gmail.com> References: <20251215164512.322786-1-phind.uet@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::633; envelope-from=phind.uet@gmail.com; helo=mail-pl1-x633.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1765829398479154100 Content-Type: text/plain; charset="utf-8" From: Nguyen Dinh Phi qemu_ftruncate64() is utility function that may be used outside of the bloc= k=20 layer. Move it to util/oslib-win32.c where other Windows-specific utility=20 functions reside. Signed-off-by: Nguyen Dinh Phi Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- block/file-win32.c | 32 -------------------------------- util/oslib-win32.c | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 34 insertions(+), 32 deletions(-) diff --git a/block/file-win32.c b/block/file-win32.c index af9aea631c..8a44853389 100644 --- a/block/file-win32.c +++ b/block/file-win32.c @@ -170,38 +170,6 @@ static BlockAIOCB *paio_submit(BlockDriverState *bs, H= ANDLE hfile, return thread_pool_submit_aio(aio_worker, acb, cb, opaque); } =20 -int qemu_ftruncate64(int fd, int64_t length) -{ - LARGE_INTEGER li; - DWORD dw; - LONG high; - HANDLE h; - BOOL res; - - if ((GetVersion() & 0x80000000UL) && (length >> 32) !=3D 0) - return -1; - - h =3D (HANDLE)_get_osfhandle(fd); - - /* get current position, ftruncate do not change position */ - li.HighPart =3D 0; - li.LowPart =3D SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT); - if (li.LowPart =3D=3D INVALID_SET_FILE_POINTER && GetLastError() !=3D = NO_ERROR) { - return -1; - } - - high =3D length >> 32; - dw =3D SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN); - if (dw =3D=3D INVALID_SET_FILE_POINTER && GetLastError() !=3D NO_ERROR= ) { - return -1; - } - res =3D SetEndOfFile(h); - - /* back to old position */ - SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); - return res ? 0 : -1; -} - static int set_sparse(int fd) { DWORD returned; diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 839b8a4170..766c602172 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -899,3 +899,37 @@ int qemu_shm_alloc(size_t size, Error **errp) error_setg(errp, "Shared memory is not supported."); return -1; } + +int qemu_ftruncate64(int fd, int64_t length) +{ + LARGE_INTEGER li; + DWORD dw; + LONG high; + HANDLE h; + BOOL res; + + if ((GetVersion()&0x80000000UL) && (length >> 32) !=3D 0) { + return -1; + } + + h =3D (HANDLE)_get_osfhandle(fd); + + /* get current position, ftruncate do not change position */ + li.HighPart =3D 0; + li.LowPart =3D SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT); + if (li.LowPart =3D=3D INVALID_SET_FILE_POINTER && GetLastError() !=3D = NO_ERROR) { + return -1; + } + + high =3D length >> 32; + dw =3D SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN); + if (dw =3D=3D INVALID_SET_FILE_POINTER && GetLastError() !=3D NO_ERROR= ) { + return -1; + } + res =3D SetEndOfFile(h); + + /* back to old position */ + SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); + return res ? 0 : -1; +} + --=20 2.43.0