diff options
Diffstat (limited to 'tapsets.cxx')
| -rw-r--r-- | tapsets.cxx | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/tapsets.cxx b/tapsets.cxx index 0ff26be8..57322882 100644 --- a/tapsets.cxx +++ b/tapsets.cxx @@ -6248,7 +6248,7 @@ module_info::~module_info() delete sym_table; } -// Helper function to emit vma tracker callback _stp_tf_vm_cb. +// Helper function to emit vma tracker callbacks. static void emit_vma_callback_probe_decl (systemtap_session& s, string path, @@ -6266,7 +6266,9 @@ emit_vma_callback_probe_decl (systemtap_session& s, s.op->line() << " .pid=" << pid << ","; } s.op->line() << " .callback=NULL,"; - s.op->line() << " .vm_callback=&_stp_tf_vm_cb,"; + s.op->line() << " .mmap_callback=&_stp_tf_mmap_cb,"; + s.op->line() << " .munmap_callback=&_stp_tf_munmap_cb,"; + s.op->line() << " .mprotect_callback=NULL,"; s.op->line() << " },"; } @@ -6574,6 +6576,7 @@ itrace_derived_probe_group::emit_module_init (systemtap_session& s) s.op->newline(); s.op->newline() << "#ifdef STP_NEED_VMA_TRACKER"; + s.op->newline() << "_stp_sym_init();"; s.op->newline() << "/* ---- itrace vma callbacks ---- */"; s.op->newline() << "for (i=0; i<ARRAY_SIZE(stap_itrace_vmcbs); i++) {"; s.op->indent(1); @@ -6988,7 +6991,9 @@ utrace_derived_probe_group::emit_probe_decl (systemtap_session& s, } s.op->line() << " .callback=&_stp_utrace_probe_cb,"; - s.op->line() << " .vm_callback=NULL,"; + s.op->line() << " .mmap_callback=NULL,"; + s.op->line() << " .munmap_callback=NULL,"; + s.op->line() << " .mprotect_callback=NULL,"; s.op->line() << " },"; s.op->line() << " .pp=" << lex_cast_qstring (*p->sole_location()) << ","; s.op->line() << " .ph=&" << p->name << ","; @@ -7320,6 +7325,7 @@ utrace_derived_probe_group::emit_module_init (systemtap_session& s) s.op->newline(); s.op->newline() << "#ifdef STP_NEED_VMA_TRACKER"; + s.op->newline() << "_stp_sym_init();"; s.op->newline() << "/* ---- utrace vma callbacks ---- */"; s.op->newline() << "for (i=0; i<ARRAY_SIZE(stap_utrace_vmcbs); i++) {"; s.op->indent(1); @@ -7762,23 +7768,25 @@ uprobe_derived_probe_group::emit_module_decls (systemtap_session& s) s.op->newline(0) << "return stap_uprobe_change (tsk, register_p, 0, sups);"; s.op->newline(-1) << "}"; - // The task_finder_vm_callback we use for ET_DYN targets. + // The task_finder_mmap_callback we use for ET_DYN targets. s.op->newline(); - s.op->newline() << "static int stap_uprobe_vmchange_found (struct stap_task_finder_target *tgt, struct task_struct *tsk, int map_p, char *vm_path, unsigned long vm_start, unsigned long vm_end, unsigned long vm_pgoff) {"; + s.op->newline() << "static int stap_uprobe_mmap_found (struct stap_task_finder_target *tgt, struct task_struct *tsk, char *path, unsigned long addr, unsigned long length, unsigned long offset, unsigned long vm_flags) {"; s.op->newline(1) << "struct stap_uprobe_spec *sups = container_of(tgt, struct stap_uprobe_spec, finder);"; // 1 - shared libraries' executable segments load from offset 0 - ld.so convention - s.op->newline() << "if (vm_pgoff != 0) return 0;"; + s.op->newline() << "if (offset != 0) return 0;"; // 2 - the shared library we're interested in - s.op->newline() << "if (vm_path == NULL || strcmp (vm_path, sups->pathname)) return 0;"; + s.op->newline() << "if (path == NULL || strcmp (path, sups->pathname)) return 0;"; // 3 - probe address within the mapping limits; test should not fail - s.op->newline() << "if (vm_end <= vm_start + sups->address) return 0;"; + s.op->newline() << "if (sups->address >= addr && sups->address < (addr + length)) return 0;"; + // 4 - mapping should be executable + s.op->newline() << "if (!(vm_flags & VM_EXEC)) return 0;"; s.op->newline() << "#ifdef DEBUG_TASK_FINDER_VMA"; - s.op->newline() << "printk (KERN_INFO \"vmchange pid %d map_p %d path %s vms %p vme %p vmp %p\\n\", tsk->tgid, map_p, vm_path, (void*) vm_start, (void*) vm_end, (void*) vm_pgoff);"; + s.op->newline() << "printk (KERN_INFO \"vmchange pid %d path %s addr %p length %lu offset %p\\n\", tsk->tgid, path, (void *) addr, length, (void*) offset);"; s.op->newline() << "printk (KERN_INFO \"sups %p pp %s path %s address %p\\n\", sups, sups->pp, sups->pathname ?: \"\", (void*) sups->address);"; s.op->newline() << "#endif"; - s.op->newline(0) << "return stap_uprobe_change (tsk, map_p, vm_start, sups);"; + s.op->newline(0) << "return stap_uprobe_change (tsk, 1, addr, sups);"; s.op->newline(-1) << "}"; s.op->assert_0_indent(); @@ -7792,6 +7800,7 @@ uprobe_derived_probe_group::emit_module_init (systemtap_session& s) { if (probes.empty()) return; s.op->newline() << "#ifdef STP_NEED_VMA_TRACKER"; + s.op->newline() << "_stp_sym_init();"; s.op->newline() << "/* ---- uprobe vma callbacks ---- */"; s.op->newline() << "for (i=0; i<ARRAY_SIZE(stap_uprobe_vmcbs); i++) {"; s.op->indent(1); @@ -7815,7 +7824,7 @@ uprobe_derived_probe_group::emit_module_init (systemtap_session& s) s.op->newline(1) << "struct stap_uprobe_spec *sups = & stap_uprobe_specs[i];"; s.op->newline() << "probe_point = sups->pp;"; // for error messages s.op->newline() << "if (sups->finder.pathname) sups->finder.callback = & stap_uprobe_process_found;"; - s.op->newline() << "else if (sups->pathname) sups->finder.vm_callback = & stap_uprobe_vmchange_found;"; + s.op->newline() << "else if (sups->pathname) sups->finder.mmap_callback = & stap_uprobe_mmap_found;"; s.op->newline() << "rc = stap_register_task_finder_target (& sups->finder);"; // NB: if (rc), there is no need (XXX: nor any way) to clean up any |