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[122.61.176.117]) by smtp.gmail.com with ESMTPSA id r6sm5576882pjm.12.2021.06.09.15.31.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Jun 2021 15:31:12 -0700 (PDT) Cc: mtk.manpages@gmail.com, linux-man@vger.kernel.org Subject: Re: [PATCH v2 04/10] seccomp.2: Use syscall(SYS_...); for system calls without a wrapper To: Alejandro Colomar References: <20210521232553.161080-10-alx.manpages@gmail.com> <20210524181947.459437-4-alx.manpages@gmail.com> From: "Michael Kerrisk (man-pages)" Message-ID: <65088a2c-854e-4f26-795e-a87cab192575@gmail.com> Date: Thu, 10 Jun 2021 10:31:09 +1200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210524181947.459437-4-alx.manpages@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org On 5/25/21 6:19 AM, Alejandro Colomar wrote: > Signed-off-by: Alejandro Colomar This patch doesn't apply. Probably because I dropped 3/10? Thanks, Michael > --- > man2/seccomp.2 | 14 ++++++++------ > 1 file changed, 8 insertions(+), 6 deletions(-) > > diff --git a/man2/seccomp.2 b/man2/seccomp.2 > index 1be7d6766..0f3f30767 100644 > --- a/man2/seccomp.2 > +++ b/man2/seccomp.2 > @@ -37,13 +37,18 @@ seccomp \- operate on Secure Computing state of the process > .BR "#include " " /* Definition of " PTRACE_* " constants */" > .\" Kees Cook noted: Anything that uses SECCOMP_RET_TRACE returns will > .\" need > +.BR "#include " " /* Definition of " SYS_* " constants */" > +.B #include > .PP > -.BI "int seccomp(unsigned int " operation ", unsigned int " flags \ > -", void *" args ); > +.BI "int syscall(SYS_seccomp, unsigned int " operation ", unsigned int " flags , > +.BI " void *" args ); > .fi > .PP > .IR Note : > -There is no glibc wrapper for this system call; see NOTES. > +glibc provides no wrapper for > +.BR seccomp (), > +necessitating the use of > +.BR syscall (2). > .SH DESCRIPTION > The > .BR seccomp () > @@ -858,9 +863,6 @@ Tile (since Linux 4.3) > PA-RISC (since Linux 4.6) > .\" User mode Linux since Linux 4.6 > .PD > -.PP > -Glibc does not provide a wrapper for this system call; call it using > -.BR syscall (2). > .\" > .SS Caveats > There are various subtleties to consider when applying seccomp filters > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/