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Tue, 03 Feb 2026 03:52:11 -0800 (PST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: John Snow , Pierrick Bouvier , qemu-arm@nongnu.org, Markus Armbruster , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , David Gibson , Nicholas Piggin , Wainer dos Santos Moschetta , qemu-ppc@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Peter Maydell , Cleber Rosa , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , "Edgar E. Iglesias" , qemu-s390x@nongnu.org, Thomas Huth , Paolo Bonzini , Akihiko Odaki , Daniel Henrique Barboza , David Hildenbrand , Ilya Leoshkevich , Richard Henderson , Laurent Vivier , Yodel Eldar , Dominik 'Disconnect3d' Czarnota Subject: [PATCH 09/11] gdbstub/user-target: Convert host errno to GDB File-I/O errno Date: Tue, 3 Feb 2026 11:51:59 +0000 Message-ID: <20260203115201.2387721-10-alex.bennee@linaro.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260203115201.2387721-1-alex.bennee@linaro.org> References: <20260203115201.2387721-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=2a00:1450:4864:20::642; envelope-from=alex.bennee@linaro.org; helo=mail-ej1-x642.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, 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: qemu development 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 @linaro.org) X-ZM-MESSAGEID: 1770119588227158500 From: Yodel Eldar Use host_to_gdb_errno to convert host-supplied errnos to their GDB File-I/O remote protocol values, and use them in F reply packets. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2751 Reported-by: Dominik 'Disconnect3d' Czarnota Signed-off-by: Yodel Eldar Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-ID: <20260116014612.226183-4-yodel.eldar@yodel.dev> Signed-off-by: Alex Benn=C3=A9e --- gdbstub/user-target.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/gdbstub/user-target.c b/gdbstub/user-target.c index 43231e695e8..7ef0282f70e 100644 --- a/gdbstub/user-target.c +++ b/gdbstub/user-target.c @@ -10,6 +10,7 @@ #include "qemu/osdep.h" #include "exec/gdbstub.h" #include "gdbstub/commands.h" +#include "gdbstub/syscalls.h" #include "qemu.h" #include "internals.h" #ifdef CONFIG_LINUX @@ -315,7 +316,8 @@ void gdb_handle_v_file_open(GArray *params, void *user_= ctx) int fd =3D open(filename, flags, mode); #endif if (fd < 0) { - g_string_printf(gdbserver_state.str_buf, "F-1,%x", errno); + int gdb_errno =3D host_to_gdb_errno(errno); + g_string_printf(gdbserver_state.str_buf, "F-1,%x", gdb_errno); } else { g_string_printf(gdbserver_state.str_buf, "F%x", fd); } @@ -327,7 +329,8 @@ void gdb_handle_v_file_close(GArray *params, void *user= _ctx) int fd =3D gdb_get_cmd_param(params, 0)->val_ul; =20 if (close(fd) =3D=3D -1) { - g_string_printf(gdbserver_state.str_buf, "F-1,%x", errno); + int gdb_errno =3D host_to_gdb_errno(errno); + g_string_printf(gdbserver_state.str_buf, "F-1,%x", gdb_errno); gdb_put_strbuf(); return; } @@ -350,7 +353,8 @@ void gdb_handle_v_file_pread(GArray *params, void *user= _ctx) =20 ssize_t n =3D pread(fd, buf, bufsiz, offset); if (n < 0) { - g_string_printf(gdbserver_state.str_buf, "F-1,%x", errno); + int gdb_errno =3D host_to_gdb_errno(errno); + g_string_printf(gdbserver_state.str_buf, "F-1,%x", gdb_errno); gdb_put_strbuf(); return; } @@ -373,7 +377,8 @@ void gdb_handle_v_file_readlink(GArray *params, void *u= ser_ctx) ssize_t n =3D readlink(filename, buf, BUFSIZ); #endif if (n < 0) { - g_string_printf(gdbserver_state.str_buf, "F-1,%x", errno); + int gdb_errno =3D host_to_gdb_errno(errno); + g_string_printf(gdbserver_state.str_buf, "F-1,%x", gdb_errno); gdb_put_strbuf(); return; } --=20 2.47.3