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bh=w9gouYEKwWFP1bAVcWqsYjN2Sv82EgkGQIZ9ufUtORk=; b=gvjJIPlTLmVuczXF7nGVgQ5z5I0KIzOvZJNa3HlAZwf7odGlx7SzvXK1pLmG/UiwTWW3/s zNb3FAds89EpPyzcgCo9Wp3rDTpucvWzyi0zI1eQlNzRJombHXAJJ8Q0lP3l9e+eUC1pzk KG8xw6on8KN1/5xVAJt/lTrs5+TRRfQ= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1777422702; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=w9gouYEKwWFP1bAVcWqsYjN2Sv82EgkGQIZ9ufUtORk=; b=HNgyET4cvxjm2zTMlm5uRAEGtOyXgsE+K03+rmPiyeqgDhfrUXVuGcDDotAMCGE4/Akh7T d5iAOy+o4LZsz7Cg== From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: Laurent Vivier , Paolo Bonzini Subject: [PATCH v1 1/3] tests/qtest/libqtest: Replace QTEST_TRACE with QTEST_QEMU_ARGS Date: Tue, 28 Apr 2026 21:31:28 -0300 Message-ID: <20260429003130.15164-2-farosas@suse.de> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260429003130.15164-1-farosas@suse.de> References: <20260429003130.15164-1-farosas@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.80 X-Spamd-Result: default: False [-2.80 / 50.00]; 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charset="utf-8" The QTEST_TRACE environment variable allows for any QEMU command line option to be passed if used like so: export QTEST_TRACE=3D"-trace tracepoint -more -opts -here" Formalize that usage by accepting a new QTEST_QEMU_ARGS variable. Since the QTEST_TRACE now becomes redundant, remove its usage. Signed-off-by: Fabiano Rosas Reviewed-by: Peter Maydell --- tests/qtest/libqtest.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c index 051faf31e1..a580d75179 100644 --- a/tests/qtest/libqtest.c +++ b/tests/qtest/libqtest.c @@ -454,11 +454,9 @@ gchar *qtest_qemu_args(const char *extra_args) { g_autofree gchar *socket_path =3D qtest_socket_path("sock"); g_autofree gchar *qmp_socket_path =3D qtest_socket_path("qmp"); - const char *trace =3D g_getenv("QTEST_TRACE"); - g_autofree char *tracearg =3D trace ? g_strdup_printf("-trace %s ", tr= ace) : - g_strdup(""); + const char *args_from_env =3D g_getenv("QTEST_QEMU_ARGS"); + gchar *args =3D g_strdup_printf( - "%s" "-qtest unix:%s " "-qtest-log %s " "-chardev socket,path=3D%s,id=3Dchar0 " @@ -466,16 +464,17 @@ gchar *qtest_qemu_args(const char *extra_args) "-display none " "-audio none " "%s" + "%s " "%s" " -accel qtest", =20 - tracearg, socket_path, getenv("QTEST_LOG") ? DEV_STDERR : DEV_NULL, qmp_socket_path, can_exit_with_parent() ? "-run-with exit-with-parent=3Don " : "", - extra_args ?: ""); + extra_args ?: "", + args_from_env ?: ""); =20 return args; } --=20 2.51.0 From nobody Sat May 30 19:21:50 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=suse.de ARC-Seal: i=1; a=rsa-sha256; t=1777422748; cv=none; d=zohomail.com; s=zohoarc; b=MnsXOqp1cQR9Rg+OK0pP+9kaNWz3mxqYMzcE8U/eDOOqLgz+scQbKyn8rK7gC8x58Z9Y1ZRA/MNRpHj3JgVfhOQWU/TV8cvkkAy8LgfxB0ChnK4OEck+q4SucinDH01XiYH3X7z+VTFXV0UVa9xdHUwz7Wwb9j/YfW5rCtmTGv4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1777422748; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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helo=lists1p.gnu.org; Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:1; envelope-from=farosas@suse.de; helo=smtp-out1.suse.de 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, 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 @suse.de) X-ZM-MESSAGEID: 1777422750861154100 Content-Type: text/plain; charset="utf-8" Allow logging to be set for specific parts of QTest. Having a single QTEST_LOG knob creates an output stream that is almost useless due to spamming from some operations. Add a backward-compatible way of selecting which parts will be made verbose. Reuse the existing QTEST_LOG variable. The new options are: QTEST_LOG=3D fuzz - fuzz.c qga - unit/test-qga.c qmp - libqmp.c qtest - QTest device, i.e. -qtest-log option test - generic term for usage of all tests E.g.: QTEST_LOG=3Dfuzz,qga,qmp,qtest,test equivalent to QTEST_LOG=3D1 QTEST_LOG=3Dqmp,qtest enables logging of qmp operations from libqmp.c and logging of the qtest device. QTEST_LOG=3Dtest,qmp enable test output and libqmp.c output. QTEST_LOG=3D-qmp enable all output, except for libqmp.c Signed-off-by: Fabiano Rosas Acked-by: Peter Xu --- tests/qtest/fuzz/fuzz.c | 7 ++-- tests/qtest/fuzz/generic_fuzz.c | 2 +- tests/qtest/libqmp.c | 7 ++-- tests/qtest/libqtest.c | 56 ++++++++++++++++++++++++++- tests/qtest/libqtest.h | 11 ++++++ tests/qtest/migration/framework.c | 2 +- tests/qtest/migration/framework.h | 5 ++- tests/qtest/migration/precopy-tests.c | 2 +- tests/unit/meson.build | 2 +- tests/unit/test-qga.c | 2 +- 10 files changed, 82 insertions(+), 14 deletions(-) diff --git a/tests/qtest/fuzz/fuzz.c b/tests/qtest/fuzz/fuzz.c index ca248a51a6..d235598961 100644 --- a/tests/qtest/fuzz/fuzz.c +++ b/tests/qtest/fuzz/fuzz.c @@ -105,7 +105,7 @@ static void usage(char *path) "Set the environment variable FUZZ_SERIALIZE_QTEST=3D1 to seria= lize\n" "QTest commands into an ASCII protocol. Useful for building cra= sh\n" "reproducers, but slows down execution.\n\n" - "Set the environment variable QTEST_LOG=3D1 to log all qtest co= mmands" + "Set the environment variable QTEST_LOG=3Dfuzz to log all qtest= commands" "\n"); exit(0); } @@ -168,6 +168,7 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, char = ***envp) GString *cmd_line; gchar *pretty_cmd_line; bool serialize =3D false; + bool verbose =3D qtest_verbose("fuzz"); =20 /* Initialize qgraph and modules */ qos_graph_init(); @@ -211,14 +212,14 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, cha= r ***envp) /* Run QEMU's system main with the fuzz-target dependent arguments */ cmd_line =3D fuzz_target->get_init_cmdline(fuzz_target); g_string_append_printf(cmd_line, " %s -qtest /dev/null ", - getenv("QTEST_LOG") ? "" : "-qtest-log none"); + verbose ? "" : "-qtest-log none"); =20 /* Split the runcmd into an argv and argc */ wordexp_t result; wordexp(cmd_line->str, &result, 0); g_string_free(cmd_line, true); =20 - if (getenv("QTEST_LOG")) { + if (verbose) { pretty_cmd_line =3D g_strjoinv(" ", result.we_wordv + 1); printf("Starting %s with Arguments: %s\n", result.we_wordv[0], pretty_cmd_line); diff --git a/tests/qtest/fuzz/generic_fuzz.c b/tests/qtest/fuzz/generic_fuz= z.c index 440de25034..e48f868775 100644 --- a/tests/qtest/fuzz/generic_fuzz.c +++ b/tests/qtest/fuzz/generic_fuzz.c @@ -776,7 +776,7 @@ static void generic_pre_fuzz(QTestState *s) if (!getenv("QEMU_FUZZ_OBJECTS")) { usage(); } - if (getenv("QTEST_LOG")) { + if (qtest_verbose("fuzz")) { qtest_log_enabled =3D 1; } if (getenv("QEMU_AVOID_DOUBLE_FETCH")) { diff --git a/tests/qtest/libqmp.c b/tests/qtest/libqmp.c index 16fe546885..cd12bd2678 100644 --- a/tests/qtest/libqmp.c +++ b/tests/qtest/libqmp.c @@ -17,6 +17,7 @@ #include "qemu/osdep.h" =20 #include "libqmp.h" +#include "libqtest.h" =20 #ifndef _WIN32 #include @@ -62,7 +63,7 @@ static void qmp_response(void *opaque, QObject *obj, Erro= r *err) QDict *qmp_fd_receive(int fd) { QMPResponseParser qmp; - bool log =3D getenv("QTEST_LOG") !=3D NULL; + bool log =3D qtest_verbose("qmp"); =20 qmp.response =3D NULL; json_message_parser_init(&qmp.parser, qmp_response, &qmp, NULL); @@ -149,7 +150,7 @@ _qmp_fd_vsend_fds(int fd, int *fds, size_t fds_num, =20 /* No need to send anything for an empty QObject. */ if (qobj) { - int log =3D getenv("QTEST_LOG") !=3D NULL; + bool log =3D qtest_verbose("qmp"); GString *str =3D qobject_to_json(qobj); =20 /* @@ -220,7 +221,7 @@ void qmp_fd_send(int fd, const char *fmt, ...) =20 void qmp_fd_vsend_raw(int fd, const char *fmt, va_list ap) { - bool log =3D getenv("QTEST_LOG") !=3D NULL; + bool log =3D qtest_verbose("qmp"); char *str =3D g_strdup_vprintf(fmt, ap); =20 if (log) { diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c index a580d75179..b12b8d3dce 100644 --- a/tests/qtest/libqtest.c +++ b/tests/qtest/libqtest.c @@ -469,7 +469,7 @@ gchar *qtest_qemu_args(const char *extra_args) " -accel qtest", =20 socket_path, - getenv("QTEST_LOG") ? DEV_STDERR : DEV_NULL, + qtest_verbose("qtest") ? DEV_STDERR : DEV_NULL, qmp_socket_path, can_exit_with_parent() ? "-run-with exit-with-parent=3Don " : "", @@ -2125,3 +2125,57 @@ bool mkimg(const char *file, const char *fmt, unsign= ed size_mb) =20 return ret && !err; } + +bool qtest_verbose(const char *domain) +{ + const char *log =3D getenv("QTEST_LOG"); + char *found; + + assert(domain); + + if (log) { + /* + * verbose=3Dtrue for all domains if: + * QTEST_LOG=3D + * QTEST_LOG=3D1 + * other one-character variations + */ + if (log[0] =3D=3D '\0' || log[1] =3D=3D '\0') { + return true; + } + + /* + * verbose=3Dtrue for specified domains if: + * QTEST_LOG=3D + * QTEST_LOG=3D, + * allows other separators, except - and + + * + * verbose=3Dfalse for specified domains if: + * QTEST_LOG=3D- + * QTEST_LOG=3D,- (only false for domain2) + * allows other separators, except - and + + */ + found =3D strstr(log, domain); + + if (found) { + /* reject options given twice */ + assert(!strstr(found + strlen(domain), domain)); + + if (found > log) { + ptrdiff_t i =3D found - log - 1; + if (log[i] =3D=3D '-') { + return false; + } + } + return true; + } else { + /* + * If filtering out a specific domain, all others are + * enabled. + */ + return !!strstr(log, "-"); + } + } + + return false; +} diff --git a/tests/qtest/libqtest.h b/tests/qtest/libqtest.h index 9c118c89ca..950ea2baaf 100644 --- a/tests/qtest/libqtest.h +++ b/tests/qtest/libqtest.h @@ -1178,4 +1178,15 @@ bool have_qemu_img(void); */ bool mkimg(const char *file, const char *fmt, unsigned size_mb); =20 +/** + * qtest_verbose: + * @domain: The logging domain + * + * Read the QTEST_LOG environment variable and return whether the + * specified domain is enabled for verbose logging. Enable specific + * logging domains with QTEST_LOG=3D or use QTEST_LOG=3D- = to + * enable all domains except for the specific one. + */ +bool qtest_verbose(const char *domain); + #endif diff --git a/tests/qtest/migration/framework.c b/tests/qtest/migration/fram= ework.c index 9f71d51f1e..49c7f37e60 100644 --- a/tests/qtest/migration/framework.c +++ b/tests/qtest/migration/framework.c @@ -365,7 +365,7 @@ int migrate_args(char **from, char **to, const char *ur= i, MigrateStart *args) g_assert_not_reached(); } =20 - if (!getenv("QTEST_LOG") && args->hide_stderr) { + if (!qtest_verbose("test") && args->hide_stderr) { #ifndef _WIN32 ignore_stderr =3D "2>/dev/null"; #else diff --git a/tests/qtest/migration/framework.h b/tests/qtest/migration/fram= ework.h index 79604c60f5..bb534b8110 100644 --- a/tests/qtest/migration/framework.h +++ b/tests/qtest/migration/framework.h @@ -118,8 +118,9 @@ typedef void (*TestMigrateEndHook)(QTestState *from, */ typedef struct { /* - * QTEST_LOG=3D1 may override this. When QTEST_LOG=3D1, we always dum= p errors - * unconditionally, because it means the user would like to be verbose. + * QTEST_LOG=3Dtest may override this in which case we dump errors + * unconditionally, because it means the user would like to be + * verbose. */ bool hide_stderr; MemType mem_type; diff --git a/tests/qtest/migration/precopy-tests.c b/tests/qtest/migration/= precopy-tests.c index a0e3ff0547..e65d9e04a5 100644 --- a/tests/qtest/migration/precopy-tests.c +++ b/tests/qtest/migration/precopy-tests.c @@ -130,7 +130,7 @@ static bool mlock_check(void) static int new_rdma_link(char *buffer, bool ipv6) { char cmd[256]; - bool verbose =3D g_getenv("QTEST_LOG"); + bool verbose =3D qtest_verbose("test"); =20 snprintf(cmd, sizeof(cmd), "IP_FAMILY=3D%s %s detect %s", ipv6 ? "ipv6" : "ipv4", RDMA_MIGRATION_HELPER, diff --git a/tests/unit/meson.build b/tests/unit/meson.build index 41e8b06c33..4b9d4d5934 100644 --- a/tests/unit/meson.build +++ b/tests/unit/meson.build @@ -160,7 +160,7 @@ if have_system endif =20 if have_ga and host_os =3D=3D 'linux' - tests +=3D {'test-qga': ['../qtest/libqmp.c']} + tests +=3D {'test-qga': ['../qtest/libqmp.c', '../qtest/libqtest.c']} test_deps +=3D {'test-qga': qga} endif =20 diff --git a/tests/unit/test-qga.c b/tests/unit/test-qga.c index 587e30c7e4..01ccf826e6 100644 --- a/tests/unit/test-qga.c +++ b/tests/unit/test-qga.c @@ -68,7 +68,7 @@ fixture_setup(TestFixture *fixture, gconstpointer data, g= char **envp) cmd =3D g_strdup_printf("%s%cqga%cqemu-ga -m unix-listen -t %s -p %s %= s %s", cwd, G_DIR_SEPARATOR, G_DIR_SEPARATOR, fixture->test_dir, path, - getenv("QTEST_LOG") ? "-v" : "", + qtest_verbose("qga") ? 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charset="utf-8" Document the QTEST_ environment variables. Only include the ones used by QTest itself, don't document test-specific variables as they are more prone to change. Suggested-by: Peter Maydell Signed-off-by: Fabiano Rosas Reviewed-by: Peter Maydell Reviewed-by: Pierrick Bouvier --- docs/devel/testing/qtest.rst | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/docs/devel/testing/qtest.rst b/docs/devel/testing/qtest.rst index 73ef7702b7..0aac0f0aaf 100644 --- a/docs/devel/testing/qtest.rst +++ b/docs/devel/testing/qtest.rst @@ -91,3 +91,36 @@ libqtest API reference ---------------------- =20 .. kernel-doc:: tests/qtest/libqtest.h + + +QTest valid environment variables +--------------------------------- + +A few environment variables are used to point QTest at artifacts to be +used in the tests, mostly QEMU binaries or to control the behavior of +the tests. Environment variables are set automatically by the build +system, but it can be useful to alter them when running tests +manually. The following are the environment variables recognized by +QTest, not including test-specific ones: + +QTEST_QEMU_BINARY - The QEMU binary itself + +QTEST_QEMU_ARGS - Extra arguments for the QEMU command line + +QTEST_QEMU_IMG - The qemu-img binary + +QTEST_QEMU_STORAGE_DAEMON_BINARY - The qemu-storage-daemon binary + +QTEST_STOP - Instruct QTest to stop the QEMU process with SIGSTOP before c= ontinuing execution. + +QTEST_LOG - Comma-separated list of log domains to allow verbose logging. = Basic log domains include: + + qmp - controls verbose output of QMP command invocations. + + qtest - controls verbose ouput of qtest operations. + + test - controls verbose output of tests. + + A dash '-' used in front of a log domain has the effect of + enabling verbose logging for all other domains while + keeping it disabled for the specified domain. --=20 2.51.0