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spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38742 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lTmzz-00073L-OH for qemu-devel@archiver.kernel.org; Tue, 06 Apr 2021 10:48:11 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47126) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lTmy5-0005lY-5x for qemu-devel@nongnu.org; Tue, 06 Apr 2021 10:46:13 -0400 Received: from mout.kundenserver.de ([217.72.192.73]:46473) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lTmy3-0004pK-D4 for qemu-devel@nongnu.org; Tue, 06 Apr 2021 10:46:12 -0400 Received: from [192.168.100.1] ([82.142.14.126]) by mrelayeu.kundenserver.de (mreue109 [213.165.67.119]) with ESMTPSA (Nemesis) id 1MK3eC-1l9NUu351K-00LVVU; Tue, 06 Apr 2021 16:46:06 +0200 Subject: Re: [PATCH v2] linux-user: strace now handles unshare syscall args correctly To: Matus Kysel References: <20210406144203.1020598-1-mkysel@tachyum.com> From: Laurent Vivier Message-ID: Date: Tue, 6 Apr 2021 16:46:05 +0200 User-Agent: Mozilla/5.0 (X11; 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envelope-from=laurent@vivier.eu; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "open list:All patches CC here" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Le 06/04/2021 à 16:42, Matus Kysel a écrit : > Syscall unshare did not have custom print function for strace, but it's argument is same as flags in clone syscall, so it can be easily implemented. > Also updated missing flags from clone_flags. > > Signed-off-by: Matus Kysel > --- > linux-user/strace.c | 18 ++++++++++++++++++ > linux-user/strace.list | 2 +- > 2 files changed, 19 insertions(+), 1 deletion(-) > > diff --git a/linux-user/strace.c b/linux-user/strace.c > index e969121b6c..1cadb6d50f 100644 > --- a/linux-user/strace.c > +++ b/linux-user/strace.c > @@ -1109,6 +1109,12 @@ UNUSED static struct flags clone_flags[] = { > #if defined(CLONE_NEWNET) > FLAG_GENERIC(CLONE_NEWNET), > #endif > +#if defined(CLONE_NEWCGROUP) > + FLAG_GENERIC(CLONE_NEWCGROUP), > +#endif > +#if defined(CLONE_NEWTIME) > + FLAG_GENERIC(CLONE_NEWTIME), > +#endif > #if defined(CLONE_IO) > FLAG_GENERIC(CLONE_IO), > #endif > @@ -3467,6 +3473,18 @@ print_unlinkat(void *cpu_env, const struct syscallname *name, > } > #endif > > +#ifdef TARGET_NR_unshare > +static void > +print_unshare(void *cpu_env, const struct syscallname *name, > + abi_long arg0, abi_long arg1, abi_long arg2, > + abi_long arg3, abi_long arg4, abi_long arg5) > +{ > + print_syscall_prologue(name); > + print_flags(clone_flags, arg0, 1); > + print_syscall_epilogue(name); > +} > +#endif > + > #ifdef TARGET_NR_utime > static void > print_utime(void *cpu_env, const struct syscallname *name, > diff --git a/linux-user/strace.list b/linux-user/strace.list > index 084048ab96..3b7c15578c 100644 > --- a/linux-user/strace.list > +++ b/linux-user/strace.list > @@ -1573,7 +1573,7 @@ > { TARGET_NR_unlinkat, "unlinkat" , NULL, print_unlinkat, NULL }, > #endif > #ifdef TARGET_NR_unshare > -{ TARGET_NR_unshare, "unshare" , NULL, NULL, NULL }, > +{ TARGET_NR_unshare, "unshare" , NULL, print_unshare, NULL }, > #endif > #ifdef TARGET_NR_userfaultfd > { TARGET_NR_userfaultfd, "userfaultfd" , NULL, NULL, NULL }, > -- > 2.25.1 > > Reviewed-by: Laurent Vivier