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set_tid_address.2: Use syscall(SYS_...); for system calls without a wrapper 

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-05-24 20:19:43 +02:00 committed by Michael Kerrisk
parent ba4d34a16d
commit 18e21e1e4c
1 changed files with 7 additions and 6 deletions
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13
man2/set_tid_address.2
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@ -27,13 +27,17 @@
set_tid_address \- set pointer to thread ID set_tid_address \- set pointer to thread ID
.SH SYNOPSIS .SH SYNOPSIS
.nf .nf
.B #include <linux/unistd.h> .BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */"
.B #include <unistd.h>
.PP .PP
.BI "pid_t set_tid_address(int *" tidptr ); .BI "pid_t syscall(SYS_set_tid_address, int *" tidptr );
.fi .fi
.PP .PP
.IR Note : .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 .SH DESCRIPTION
For each thread, the kernel maintains two attributes (addresses) called For each thread, the kernel maintains two attributes (addresses) called
.I set_child_tid .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. Details as given here are valid since Linux 2.5.49.
.SH CONFORMING TO .SH CONFORMING TO
This system call is Linux-specific. 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 .SH SEE ALSO
.BR clone (2), .BR clone (2),
.BR futex (2), .BR futex (2),