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([148.252.133.210]) by smtp.gmail.com with ESMTPSA id e17-20020a5d4e91000000b0031433760a92sm9635256wru.115.2023.07.09.11.33.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Jul 2023 11:33:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1688927594; x=1691519594; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=pYClR0sio6rk2lfqoeXA7l3l3ZWEbz0PJoflMrr2nFA=; b=Ek84AOvZNcHIvJstxIH7nP3lru0f2WFFT8X5wY+y8Gjs2PL1vvV6B4DBESjT+aDuRV 3XTKs02RF869kYogOzc716+FH/0+oDC5DWW+BRj6WAqqENl7O5Y8qCfwaN17jl5ySW5t dlPOWUk4bXNCeGwIudaD242/p0ytmM/nVOpFnm+0Nk/aGDL1uFCn95d7Tm2tiPWiyAe2 ulVylCFZ2dppc+lx5ovIwSyiHsi3+J1FOJbdmIMd7Z6Tnyxwcbodl/iWEDTJ/kSjKbuQ CPgTD7XOTLHiEMfUaC3Fc23j1E4wtlPgsDhKk9kCWrS5sTizCw/T5Mq5YI2fnXXNn/qK 6VKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688927594; x=1691519594; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=pYClR0sio6rk2lfqoeXA7l3l3ZWEbz0PJoflMrr2nFA=; b=FcKn0BPKWsWK9kViOe3ucJPfgaNZaIo5in/y9//PvrQICbJ7g3hZy4jxfncAhy5Rw6 kxGgmDzl+yFDQSUCEib2GVxYHNGI6MGs0nN4ih0A1X3F8Oy8yl+YXMUBaKNFFLr6Dibt nTo2oazA7Ba+HKe6oD3UkaoiJwjU4uAA9XOEt6WJXOCkNoLYsCSb47yf0kfgb3jwvbLI unX5+jIZgDJQMZ7citeUQ4smV7uuVgrt7MmMUTUlLPHaLgc94zFHd2e9sOwtI5g1h5pw bhcCkB7lhBCNzwmDojBUKwSjCeux7jX19c30iZU1Vt7JCKuJ/mIxOQTSEvwMrUqdFjey wUhQ== X-Gm-Message-State: ABy/qLbgSHgxqnjuCxf2IoQ+LAwCcGhlgbEnC8gLRDUoxouFsgFYN/Az Cd2SUKlpFfG7WZMhoxmS3FVjEzpo3sZt39jIUs5OfQ== X-Google-Smtp-Source: APBJJlEl1psj1wivmCYda/dk+Ml02qQSXzpZiJsEJXy3acd+E3Pr2qvIteiEYvAJZIH5ohTdq2D5aQ== X-Received: by 2002:adf:fd84:0:b0:314:a8d:2c9 with SMTP id d4-20020adffd84000000b003140a8d02c9mr10293152wrr.0.1688927594263; Sun, 09 Jul 2023 11:33:14 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: laurent@vivier.eu, =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PATCH 22/45] linux-user/strace: Expand struct flags to hold a mask Date: Sun, 9 Jul 2023 19:28:55 +0100 Message-Id: <20230709182934.309468-44-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230709182934.309468-1-richard.henderson@linaro.org> References: <20230709182934.309468-1-richard.henderson@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::42e; envelope-from=richard.henderson@linaro.org; helo=mail-wr1-x42e.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, T_SCC_BODY_TEXT_LINE=-0.01 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 @linaro.org) X-ZM-MESSAGEID: 1688928219619100003 A zero bit value does not make sense -- it must relate to some field in some way. Define FLAG_BASIC with a build-time sanity check. Adjust FLAG_GENERIC and FLAG_TARGET to use it. Add FLAG_GENERIC_MASK and FLAG_TARGET_MASK. Fix up the existing flag definitions for build errors. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson Message-Id: <20230707204054.8792-6-richard.henderson@linaro.org> --- linux-user/strace.c | 40 ++++++++++++++++++++++------------------ 1 file changed, 22 insertions(+), 18 deletions(-) diff --git a/linux-user/strace.c b/linux-user/strace.c index aad2b62ca4..566396d051 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -46,15 +46,21 @@ struct syscallname { */ struct flags { abi_long f_value; /* flag */ + abi_long f_mask; /* mask */ const char *f_string; /* stringified flag */ }; =20 +/* No 'struct flags' element should have a zero mask. */ +#define FLAG_BASIC(V, M, N) { V, M | QEMU_BUILD_BUG_ON_ZERO(!(M)), N } + /* common flags for all architectures */ -#define FLAG_GENERIC(name) { name, #name } +#define FLAG_GENERIC_MASK(V, M) FLAG_BASIC(V, M, #V) +#define FLAG_GENERIC(V) FLAG_BASIC(V, V, #V) /* target specific flags (syscall_defs.h has TARGET_) */ -#define FLAG_TARGET(name) { TARGET_ ## name, #name } +#define FLAG_TARGET_MASK(V, M) FLAG_BASIC(TARGET_##V, TARGET_##M, #V) +#define FLAG_TARGET(V) FLAG_BASIC(TARGET_##V, TARGET_##V, #V) /* end of flags array */ -#define FLAG_END { 0, NULL } +#define FLAG_END { 0, 0, NULL } =20 /* Structure used to translate enumerated values into strings */ struct enums { @@ -963,7 +969,7 @@ print_syscall_ret_ioctl(CPUArchState *cpu_env, const st= ruct syscallname *name, #endif =20 UNUSED static const struct flags access_flags[] =3D { - FLAG_GENERIC(F_OK), + FLAG_GENERIC_MASK(F_OK, R_OK | W_OK | X_OK), FLAG_GENERIC(R_OK), FLAG_GENERIC(W_OK), FLAG_GENERIC(X_OK), @@ -999,9 +1005,9 @@ UNUSED static const struct flags mode_flags[] =3D { }; =20 UNUSED static const struct flags open_access_flags[] =3D { - FLAG_TARGET(O_RDONLY), - FLAG_TARGET(O_WRONLY), - FLAG_TARGET(O_RDWR), + FLAG_TARGET_MASK(O_RDONLY, O_ACCMODE), + FLAG_TARGET_MASK(O_WRONLY, O_ACCMODE), + FLAG_TARGET_MASK(O_RDWR, O_ACCMODE), FLAG_END, }; =20 @@ -1010,7 +1016,9 @@ UNUSED static const struct flags open_flags[] =3D { FLAG_TARGET(O_CREAT), FLAG_TARGET(O_DIRECTORY), FLAG_TARGET(O_EXCL), +#if TARGET_O_LARGEFILE !=3D 0 FLAG_TARGET(O_LARGEFILE), +#endif FLAG_TARGET(O_NOCTTY), FLAG_TARGET(O_NOFOLLOW), FLAG_TARGET(O_NONBLOCK), /* also O_NDELAY */ @@ -1075,7 +1083,7 @@ UNUSED static const struct flags umount2_flags[] =3D { }; =20 UNUSED static const struct flags mmap_prot_flags[] =3D { - FLAG_GENERIC(PROT_NONE), + FLAG_GENERIC_MASK(PROT_NONE, PROT_READ | PROT_WRITE | PROT_EXEC), FLAG_GENERIC(PROT_EXEC), FLAG_GENERIC(PROT_READ), FLAG_GENERIC(PROT_WRITE), @@ -1103,7 +1111,7 @@ UNUSED static const struct flags mmap_flags[] =3D { #ifdef MAP_POPULATE FLAG_TARGET(MAP_POPULATE), #endif -#ifdef TARGET_MAP_UNINITIALIZED +#if defined(TARGET_MAP_UNINITIALIZED) && TARGET_MAP_UNINITIALIZED !=3D 0 FLAG_TARGET(MAP_UNINITIALIZED), #endif FLAG_TARGET(MAP_HUGETLB), @@ -1201,13 +1209,13 @@ UNUSED static const struct flags statx_flags[] =3D { FLAG_GENERIC(AT_SYMLINK_NOFOLLOW), #endif #ifdef AT_STATX_SYNC_AS_STAT - FLAG_GENERIC(AT_STATX_SYNC_AS_STAT), + FLAG_GENERIC_MASK(AT_STATX_SYNC_AS_STAT, AT_STATX_SYNC_TYPE), #endif #ifdef AT_STATX_FORCE_SYNC - FLAG_GENERIC(AT_STATX_FORCE_SYNC), + FLAG_GENERIC_MASK(AT_STATX_FORCE_SYNC, AT_STATX_SYNC_TYPE), #endif #ifdef AT_STATX_DONT_SYNC - FLAG_GENERIC(AT_STATX_DONT_SYNC), + FLAG_GENERIC_MASK(AT_STATX_DONT_SYNC, AT_STATX_SYNC_TYPE), #endif FLAG_END, }; @@ -1481,14 +1489,10 @@ print_flags(const struct flags *f, abi_long flags, = int last) const char *sep =3D ""; int n; =20 - if ((flags =3D=3D 0) && (f->f_value =3D=3D 0)) { - qemu_log("%s%s", f->f_string, get_comma(last)); - return; - } for (n =3D 0; f->f_string !=3D NULL; f++) { - if ((f->f_value !=3D 0) && ((flags & f->f_value) =3D=3D f->f_value= )) { + if ((flags & f->f_mask) =3D=3D f->f_value) { qemu_log("%s%s", sep, f->f_string); - flags &=3D ~f->f_value; + flags &=3D ~f->f_mask; sep =3D "|"; n++; } --=20 2.34.1