Re: [PATCH v5 25/35] get_robust_list.2: Use syscall(SYS_...); for system calls without a wrapper

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Hi ALex,

On 4/4/21 1:58 PM, Alejandro Colomar wrote:
> Signed-off-by: Alejandro Colomar <alx.manpages@xxxxxxxxx>
> ---
>  man2/get_robust_list.2 | 19 ++++++++-----------
>  1 file changed, 8 insertions(+), 11 deletions(-)

Patch applied.

Thanks,

Michael


> diff --git a/man2/get_robust_list.2 b/man2/get_robust_list.2
> index dd43cded2..b1368ddd3 100644
> --- a/man2/get_robust_list.2
> +++ b/man2/get_robust_list.2
> @@ -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
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/



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