Re: in-system dtrace ".d" failure

[Thomas Klausner <wiz%NetBSD.org@localhost>]

On Tue, Oct 27, 2015 at 12:14:15PM -0700, bch wrote:
> > "/usr/lib/dtrace/psinfo.d", line 46: syntax error near "u_int"
> 
> I'm trying to build a userland app w/ dtrace support, and a dtrace
> compilation is failing w/ the above error... Is anybody having success
> instrumenting userland code w/ dtrace ? I saw this[0], and will be
> looking for representative code. In the meantime, I've diff'd our
> /usr/lib/dtrace/psinfo.d w/ FreeBSD head and see no immediate fixes
> for ourselves (note: I'm not a dtrace expert).
> 
> Does anybody have insight or comments on this ?

I have built a kernel with MKCTF but still cannot build mysql55-client
(which was throwing this error).

The error changed to

dtrace: failed to compile script /disk/3/archive/obj/databases/mysql55-client/work/mysql-5.5.46/include/probes_mysql.d: "/usr/lib/dtrace/psinfo.d", line 46: failed to copy type of 'pr_arglen': Type information is in parent and unavailable

When I change the type from u_int to size_t in psinfo.d, I see

dtrace: failed to compile script /disk/3/archive/obj/databases/mysql55-client/work/mysql-5.5.46/include/probes_mysql.d: "/usr/lib/dtrace/psinfo.d", line 63: cannot find type: struct proc*: Type information is in parent and unavailable

instead. Line 63 is the "};" that ends this block:

#pragma D binding "1.0" translator
translator psinfo_t < struct proc *T > {
        pr_nlwp = T->p_nlwps;
        pr_pid = T->p_pid;
        pr_ppid = (T->p_pptr == 0) ? 0 : T->p_pptr->p_pid;
        pr_pgid = (T->p_pgrp->pg_session->s_leader == 0) ? 0 : T->p_pgrp->pg_session->s_leader->p_pid;
        pr_sid = (T->p_pgrp == 0) ? 0 : ((T->p_pgrp->pg_session == 0) ? 0 : T->p_pgrp->pg_session->s_sid);
        pr_uid = T->p_cred->cr_uid;
        pr_euid = T->p_cred->cr_euid;
        pr_gid = T->p_cred->cr_gid;
        pr_egid = T->p_cred->cr_egid;
        pr_addr = 0;
        pr_psargs = stringof(T->p_comm);
        pr_arglen = strlen(T->p_comm);
};

Christos cannot reproduce this problem, and I have no idea how to
continue here. Any suggestions?

 Thomas