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author | Dave Brolley <brolley@redhat.com> | 2009-10-09 11:09:12 -0400 |
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committer | Dave Brolley <brolley@redhat.com> | 2009-10-09 11:09:12 -0400 |
commit | 2865d17a48d055b3aef6e45506292908800cdb21 (patch) | |
tree | 216ef4616108250518e0bd52b5c37a489f2906e0 /tapset-itrace.cxx | |
parent | 47f025139d1c2e75781cdab40dc9195396133754 (diff) | |
download | systemtap-steved-2865d17a48d055b3aef6e45506292908800cdb21.tar.gz systemtap-steved-2865d17a48d055b3aef6e45506292908800cdb21.tar.xz systemtap-steved-2865d17a48d055b3aef6e45506292908800cdb21.zip |
Generate safety net assertions in probe function not authorized for unprivileged users.
2009-10-08 Dave Brolley <brolley@redhat.com>
* elaborate.h (emit_unprivileged_assertion): New virtual method of deriv
ed_probe.
(emit_process_owner_assertion): New static method of derived_probe.
(check_unprivileged): New virtual method of derived_probe_builder.
(match_node::unprivileged_ok): Removed.
(match_node::allow_unprivileged): Removed.
(match_node::unprivileged_allowed): Removed.
* elaborate.cxx (translate.h): #include it.
(emit_unprivileged_assertion): New virtual method of derived_probe.
(emit_process_owner_assertion): New static method of derived_probe.
(check_unprivileged): New virtual method of derived_probe_builder.
(match_node::unprivileged_ok): Removed.
(match_node::allow_unprivileged): Removed.
(match_node::unprivileged_allowed): Removed.
(find_and_build): Don't check for unprivileged restrictions here. Call t
he
builder's check_unprivileged method.
(alias_expansion_builder::check_unprivileged): New virtual method.
* tapset-been.cxx (be_derived_probe::emit_unprivileged_assertion): New v
irtual
method.
(be_builder::check_unprivileged): Likewise.
(never_derived_probe::emit_unprivileged_assertion): Likewise.
(never_builder::check_unprivileged): Likewise.
(register_tapset_been): Don't call allow_unprivileged.
* tapset-itrace.cxx (itrace_derived_probe::emit_unprivileged_assertion):
New virtual
method.
(itrace_builder::check_unprivileged): Likewise.
(register_tapset_itrace): Don't call allow_unprivileged.
* tapset-utrace.cxx (utrace_derived_probe::emit_unprivileged_assertion):
New virtual
method.
(utrace_builder::check_unprivileged): Likewise.
(register_tapset_utrace): Don't call allow_unprivileged.
* tapset-timer.cxx (timer_derived_probe::emit_unprivileged_assertion): N
ew virtual
method.
(timer_builder::check_unprivileged): Likewise.
(register_tapset_timers): Don't call allow_unprivileged.
* tapsets.cxx (uprobe_derived_probe::emit_unprivileged_assertion): New v
irtual
method.
(uprobe_builder::check_unprivileged): Likewise.
(register_standard_tapsets): Don't call allow_unprivileged.
(register_statement_variants): Remove unprivileged_ok_p parameter. Don't
call
allow_unprivileged.
(register_function_variants): Likewise.
(register_function_and_statement_variants): Likewise.
(register_patterns): Don't call allow_unprivileged.
* translate.cxx (emit_probe): Call v->emit_unprivileged_assertion.
Diffstat (limited to 'tapset-itrace.cxx')
-rw-r--r-- | tapset-itrace.cxx | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/tapset-itrace.cxx b/tapset-itrace.cxx index 9fc59d42..512a70b0 100644 --- a/tapset-itrace.cxx +++ b/tapset-itrace.cxx @@ -44,6 +44,8 @@ struct itrace_derived_probe: public derived_probe bool hp, string &pn, int64_t pd, int ss ); void join_group (systemtap_session& s); + + void emit_unprivileged_assertion (translator_output*); }; @@ -79,6 +81,15 @@ itrace_derived_probe::itrace_derived_probe (systemtap_session &s, void +itrace_derived_probe::emit_unprivileged_assertion (translator_output* o) +{ + // These probes are allowed for unprivileged users, but only in the + // context of processes which they own. + emit_process_owner_assertion (o); +} + + +void itrace_derived_probe::join_group (systemtap_session& s) { if (! s.itrace_derived_probes) @@ -121,6 +132,10 @@ struct itrace_builder: public derived_probe_builder single_step )); } + + // No action required. These probes are allowed for unprivileged users. + virtual void check_unprivileged (const systemtap_session & sess, + const literal_map_t & parameters) {} }; @@ -300,16 +315,12 @@ register_tapset_itrace(systemtap_session& s) derived_probe_builder *builder = new itrace_builder(); root->bind_str(TOK_PROCESS)->bind(TOK_INSN) - ->allow_unprivileged() ->bind(builder); root->bind_num(TOK_PROCESS)->bind(TOK_INSN) - ->allow_unprivileged() ->bind(builder); root->bind_str(TOK_PROCESS)->bind(TOK_INSN)->bind(TOK_BLOCK) - ->allow_unprivileged() ->bind(builder); root->bind_num(TOK_PROCESS)->bind(TOK_INSN)->bind(TOK_BLOCK) - ->allow_unprivileged() ->bind(builder); } |