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#include <assert.h>
#include <stdlib.h>
#include <sys/types.h>
#include <libelfu/libelfu.h>
int elfu_mCheck(ElfuElf *me)
{
size_t numSecs;
ElfuScn **sortedSecs;
size_t i;
sortedSecs = elfu_mScnSortedByOffset(me, &numSecs);
if (!sortedSecs) {
return -1;
}
/* Check for overlapping sections */
for (i = 0; i < numSecs - 1; i++) {
if (sortedSecs[i]->shdr.sh_offset + SCNFILESIZE(&sortedSecs[i]->shdr)
> sortedSecs[i+1]->shdr.sh_offset) {
ELFU_WARN("elfu_check: Found overlapping sections: %s and %s.\n",
elfu_mScnName(me, sortedSecs[i]),
elfu_mScnName(me, sortedSecs[i+1]));
}
}
/* Check for sections overlapping with EHDR */
for (i = 0; i < numSecs; i++) {
if (sortedSecs[i]->shdr.sh_offset < me->ehdr.e_ehsize) {
ELFU_WARN("elfu_check: Found section overlapping with EHDR: %s.\n",
elfu_mScnName(me, sortedSecs[i]));
}
}
/* Check for sections overlapping with PHDRs */
for (i = 0; i < numSecs; i++) {
if (OVERLAPPING(sortedSecs[i]->shdr.sh_offset,
SCNFILESIZE(&sortedSecs[i]->shdr),
me->ehdr.e_phoff,
me->ehdr.e_phentsize * me->ehdr.e_phnum)) {
ELFU_WARN("elfu_check: Found section overlapping with PHDRs: %s.\n",
elfu_mScnName(me, sortedSecs[i]));
}
}
free(sortedSecs);
return 0;
}
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