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get_robust_list.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 2021-04-04 13:58:38 +02:00 committed by Michael Kerrisk
parent a2fe65bc36
commit eb4a40e023
1 changed files with 8 additions and 11 deletions
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19
man2/get_robust_list.2
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@ -32,16 +32,16 @@
get_robust_list, set_robust_list \- get/set list of robust futexes
.SH SYNOPSIS
.nf
.B #include <linux/futex.h>
.B #include <syscall.h>
.BR "#include <linux/futex.h>" \
" /* Definition of " "struct robust_list_head" " */"
.BR "#include <sys/syscall.h>" " /* Definition of " SYS_* " constants */"
.B #include <unistd.h>
.PP
.BI "long get_robust_list(int " pid ", struct robust_list_head **" head_ptr ,
.BI " size_t *" len_ptr );
.BI "long set_robust_list(struct robust_list_head *" head ", size_t " len );
.BI "long syscall(SYS_get_robust_list, int " pid ,
.BI " struct robust_list_head **" head_ptr ", size_t *" len_ptr );
.BI "long syscall(SYS_set_robust_list,"
.BI " struct robust_list_head *" head ", size_t " len );
.fi
.PP
.IR Note :
There are no glibc wrappers for these system calls; see NOTES.
.SH DESCRIPTION
These system calls deal with per-thread robust futex lists.
These lists are managed in user space:
@ -138,9 +138,6 @@ could be found.
These system calls were added in Linux 2.6.17.
.SH NOTES
These system calls are not needed by normal applications.
No support for them is provided in glibc.
In the unlikely event that you want to call them directly, use
.BR syscall (2).
.PP
A thread can have only one robust futex list;
therefore applications that wish