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[122.61.176.117]) by smtp.gmail.com with ESMTPSA id g11sm640401pgh.24.2021.06.09.15.25.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Jun 2021 15:25:08 -0700 (PDT) Cc: mtk.manpages@gmail.com, linux-man@vger.kernel.org Subject: Re: [PATCH v2 06/10] set_tid_address.2: Use syscall(SYS_...); for system calls without a wrapper To: Alejandro Colomar References: <20210521232553.161080-10-alx.manpages@gmail.com> <20210524181947.459437-6-alx.manpages@gmail.com> From: "Michael Kerrisk (man-pages)" Message-ID: Date: Thu, 10 Jun 2021 10:25:05 +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: <20210524181947.459437-6-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 Hi Alex, On 5/25/21 6:19 AM, Alejandro Colomar wrote: > Signed-off-by: Alejandro Colomar Applied. Thanks, Michael > --- > man2/set_tid_address.2 | 13 +++++++------ > 1 file changed, 7 insertions(+), 6 deletions(-) > > diff --git a/man2/set_tid_address.2 b/man2/set_tid_address.2 > index 258c9b9ef..65b4931eb 100644 > --- a/man2/set_tid_address.2 > +++ b/man2/set_tid_address.2 > @@ -27,13 +27,17 @@ > set_tid_address \- set pointer to thread ID > .SH SYNOPSIS > .nf > -.B #include > +.BR "#include " " /* Definition of " SYS_* " constants */" > +.B #include > .PP > -.BI "pid_t set_tid_address(int *" tidptr ); > +.BI "pid_t syscall(SYS_set_tid_address, int *" tidptr ); > .fi > .PP > .IR Note : > -There is no glibc wrapper for this system call; see NOTES. > +glibc provides no wrapper for > +.BR set_tid_address (), > +necessitating the use of > +.BR syscall (2). > .SH DESCRIPTION > For each thread, the kernel maintains two attributes (addresses) called > .I set_child_tid > @@ -99,9 +103,6 @@ This call is present since Linux 2.5.48. > Details as given here are valid since Linux 2.5.49. > .SH CONFORMING TO > This system call is Linux-specific. > -.SH NOTES > -Glibc does not provide a wrapper for this system call; call it using > -.BR syscall (2). > .SH SEE ALSO > .BR clone (2), > .BR futex (2), > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/