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* Don't clobber previously written sections.

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This commit is contained in:
Eelco Dolstra
2008-06-03 14:19:12 +00:00
parent 55a701beb7
commit d373d86ab3
1 changed files with 13 additions and 3 deletions
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16
src/patchelf.cc
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@@ -482,15 +482,25 @@ template<ElfFileParams>
void ElfFile<ElfFileParamNames>::writeReplacedSections(Elf_Off & curOff,
Elf_Addr startAddr, Elf_Off startOffset)
{
/* Overwrite the old section contents with 'X's. Do this
*before* writing the new section contents (below) to prevent
clobbering previously written new section contents. */
for (ReplacedSections::iterator i = replacedSections.begin();
i != replacedSections.end(); ++i)
{
string sectionName = i->first;
Elf_Shdr & shdr = findSection(sectionName);
debug("rewriting section `%s' from offset %d to offset %d\n",
sectionName.c_str(), rdi(shdr.sh_offset), curOff);
memset(contents + rdi(shdr.sh_offset), 'X', rdi(shdr.sh_size));
}
for (ReplacedSections::iterator i = replacedSections.begin();
i != replacedSections.end(); ++i)
{
string sectionName = i->first;
Elf_Shdr & shdr = findSection(sectionName);
debug("rewriting section `%s' from offset %d (size %d) to offset %d (size %d)\n",
sectionName.c_str(), rdi(shdr.sh_offset), rdi(shdr.sh_size), curOff, i->second.size());
memcpy(contents + curOff, (unsigned char *) i->second.c_str(),
i->second.size());