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2008-09-05 Cary Coutant <ccoutant@google.com>

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* fileread.cc (File_read::make_view): Add check for attempt to map
	beyond end of file.
This commit is contained in:
Cary Coutant
2008-09-10 17:56:02 +00:00
parent ebcf6f00fc
commit a9caad024e
2 changed files with 13 additions and 0 deletions
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5
gold/ChangeLog
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@ -1,3 +1,8 @@
2008-09-05 Cary Coutant <ccoutant@google.com>
* fileread.cc (File_read::make_view): Add check for attempt to map
beyond end of file.
2008-09-05 Cary Coutant <ccoutant@google.com> 2008-09-05 Cary Coutant <ccoutant@google.com>
* symtab.cc (Symbol_table::add_from_dynobj): Fix typos in * symtab.cc (Symbol_table::add_from_dynobj): Fix typos in

8
gold/fileread.cc
View File

@ -355,6 +355,14 @@ File_read::make_view(off_t start, section_size_type size,
{ {
gold_assert(size > 0); gold_assert(size > 0);
// Check that start and end of the view are within the file.
if (start > this->size_ || size > this->size_ - start)
gold_fatal(_("%s: attempt to map %lld bytes at offset %lld exceeds "
"size of file; the file may be corrupt"),
this->filename().c_str(),
static_cast<long long>(size),
static_cast<long long>(start));
off_t poff = File_read::page_offset(start); off_t poff = File_read::page_offset(start);
section_size_type psize = File_read::pages(size + (start - poff)); section_size_type psize = File_read::pages(size + (start - poff));