Add read-only-data segment type

djphoenix · Apr 23, 2017 · 1268717 · 1268717
1 parent dea096a
commit 1268717
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Showing 3 changed files with 14 additions and 3 deletions.
diff --git a/src/process/include/process.hpp b/src/process/include/process.hpp
@@ -27,7 +27,11 @@ struct ProcessSymbol {
 };
 
 enum SectionType: uint8_t {
-    SectionTypeCode, SectionTypeData, SectionTypeBSS, SectionTypeStack,
+  SectionTypeCode,
+  SectionTypeData,
+  SectionTypeROData,
+  SectionTypeBSS,
+  SectionTypeStack
 };
 
 class Process {

diff --git a/src/process/process.cpp b/src/process/process.cpp
@@ -118,6 +118,7 @@ uintptr_t Process::addSection(SectionType type, size_t size) {
     uint8_t flags = 4;
     switch (type) {
       case SectionTypeCode:
+      case SectionTypeROData:
         break;
       case SectionTypeData:
       case SectionTypeBSS:

diff --git a/src/readelf/readelf.cpp b/src/readelf/readelf.cpp
@@ -340,9 +340,15 @@ size_t readelf(Process *process, Stream *stream) {
           goto err;
         break;
       case PT_LOAD:
-        type = SectionTypeData;
-        if (prog->flags & PF_X)
+        if (prog->flags & PF_X) {
+          if (prog->flags & PF_W) goto err;
           type = SectionTypeCode;
+        } else {
+          if (prog->flags & PF_W)
+            type = SectionTypeData;
+          else
+            type = SectionTypeROData;
+        }
         vaddr = process->addSection(type, prog->memsz);
         if (prog->memsz > 0) {
           offset_load = 0;