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more messages in PackLinuxElf32::canPack

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This commit is contained in:
John Reiser 2011-05-30 07:21:51 -07:00
parent ece7384be4
commit de9b9fd0b1
1 changed files with 16 additions and 5 deletions
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21
src/p_lx_elf.cpp
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@ -1184,8 +1184,10 @@ bool PackLinuxElf32::canPack()
Elf32_Phdr const *phdr = (Elf32_Phdr const *)(u.buf + e_phoff);
note_size = 0;
for (unsigned j=0; j < e_phnum; ++phdr, ++j) {
if (j >= 14)
return false;
if (j >= 14) {
throwCantPack("too many Elf32_Phdr; try '--force-execve'");
return false;
}
unsigned const p_type = get_te32(&phdr->p_type);
unsigned const p_offset = get_te32(&phdr->p_offset);
if (1!=exetype && phdr->PT_LOAD32 == p_type) {
@ -1319,8 +1321,12 @@ bool PackLinuxElf32::canPack()
if (elf_find_dynamic(Elf32_Dyn::DT_INIT)) {
if (this->e_machine!=Elf32_Ehdr::EM_386)
goto abandon; // need stub: EM_ARM EM_MIPS EM_PPC
if (elf_has_dynamic(Elf32_Dyn::DT_TEXTREL))
if (elf_has_dynamic(Elf32_Dyn::DT_TEXTREL)) {
shdri = NULL;
phdri = NULL;
throwCantPack("re-compile with -fPIC to remove DT_TEXTREL");
goto abandon;
}
Elf32_Shdr const *shdr = shdri;
xct_va = ~0u;
for (j= n_elf_shnum; --j>=0; ++shdr) {
@ -1340,6 +1346,9 @@ bool PackLinuxElf32::canPack()
|| xct_va < elf_unsigned_dynamic(Elf32_Dyn::DT_VERDEF)
|| xct_va < elf_unsigned_dynamic(Elf32_Dyn::DT_VERSYM)
|| xct_va < elf_unsigned_dynamic(Elf32_Dyn::DT_VERNEEDED) ) {
phdri = NULL;
shdri = NULL;
throwCantPack("DT_ tag above stub");
goto abandon;
}
for ((shdr= shdri), (j= n_elf_shnum); --j>=0; ++shdr) {
@ -1357,10 +1366,12 @@ bool PackLinuxElf32::canPack()
else
infoWarning("no DT_INIT: %s", fi->getName());
abandon:
phdri = 0; // Done with this
phdri = NULL; // Done with this
shdri = NULL;
return false;
proceed:
phdri = 0;
phdri = NULL;
shdri = NULL;
}
// XXX Theoretically the following test should be first,
// but PackUnix::canPack() wants 0!=exetype ?