On Wed, Aug 10, 2016 at 06:19:17PM +0000, Bryan Drewery wrote:
> Author: bdrewery
> Date: Wed Aug 10 18:19:17 2016
> New Revision: 303934
> URL: https://svnweb.freebsd.org/changeset/base/303934
> 
> Log:
>   Support rmdir(2).
>   
>   MFC after:  3 days
>   Sponsored by:       EMC / Isilon Storage Division
> 
> Modified:
>   head/usr.bin/truss/syscalls.c
> 
> Modified: head/usr.bin/truss/syscalls.c
> ==============================================================================
> --- head/usr.bin/truss/syscalls.c     Wed Aug 10 18:19:14 2016        
> (r303933)
> +++ head/usr.bin/truss/syscalls.c     Wed Aug 10 18:19:17 2016        
> (r303934)
> @@ -279,6 +279,8 @@ static struct syscall decoded_syscalls[]
>         .args = { { Name, 0 }, { Name, 1 } } },
>       { .name = "renameat", .ret_type = 1, .nargs = 4,
>         .args = { { Atfd, 0 }, { Name, 1 }, { Atfd, 2 }, { Name, 3 } } },
> +     { .name = "rmdir", .ret_type = 1, .nargs = 2,
> +       .args = { { Name, 0 }, { Octal, 1 } } },
I do not quite follow this.  The table format is that nargs is the number
of arguments to the syscall, and args describe each syscall' argument,
are my assumptions right ?

If yes, what is the second rmdir(2) argument for ?

>       { .name = "rfork", .ret_type = 1, .nargs = 1,
>         .args = { { Rforkflags, 0 } } },
>       { .name = "select", .ret_type = 1, .nargs = 5,
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