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[122.61.176.117]) by smtp.gmail.com with ESMTPSA id l5sm466295pff.20.2021.06.09.15.25.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Jun 2021 15:25:41 -0700 (PDT) Cc: mtk.manpages@gmail.com, linux-man@vger.kernel.org Subject: Re: [PATCH v2 07/10] sgetmask.2: Use syscall(SYS_...); for system calls without a wrapper To: Alejandro Colomar References: <20210521232553.161080-10-alx.manpages@gmail.com> <20210524181947.459437-7-alx.manpages@gmail.com> From: "Michael Kerrisk (man-pages)" Message-ID: Date: Thu, 10 Jun 2021 10:25:36 +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: <20210524181947.459437-7-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/sgetmask.2 | 15 ++++++++------- > 1 file changed, 8 insertions(+), 7 deletions(-) > > diff --git a/man2/sgetmask.2 b/man2/sgetmask.2 > index 7563b57ff..59b58ceaf 100644 > --- a/man2/sgetmask.2 > +++ b/man2/sgetmask.2 > @@ -27,12 +27,17 @@ > sgetmask, ssetmask \- manipulation of signal mask (obsolete) > .SH SYNOPSIS > .nf > -.B "long sgetmask(void);" > -.BI "long ssetmask(long " newmask ); > +.BR "#include " " /* Definition of " SYS_* " constants */" > +.B #include > +.PP > +.B "long syscall(SYS_sgetmask, void);" > +.BI "long syscall(SYS_ssetmask, long " newmask ); > .fi > .PP > .IR Note : > -There are no glibc wrappers for these system calls; see NOTES. > +glibc provides no wrappers for these functions, > +necessitating the use of > +.BR syscall (2). > .SH DESCRIPTION > These system calls are obsolete. > .IR "Do not use them" ; > @@ -73,10 +78,6 @@ option. > .SH CONFORMING TO > These system calls are Linux-specific. > .SH NOTES > -Glibc does not provide wrappers for these obsolete system calls; > -in the unlikely event that you want to call them, use > -.BR syscall (2). > -.PP > These system calls are unaware of signal numbers greater than 31 > (i.e., real-time signals). > .PP > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/