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* elfcore.h (elf_core_file_p): Warn about core truncation.

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Alan Modra 2008-05-10 01:58:17 +00:00
parent 14a720a133
commit 536d0ff40e
2 changed files with 32 additions and 2 deletions
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4
bfd/ChangeLog
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@ -1,3 +1,7 @@
2008-05-10 Paul Pluzhnikov <ppluzhnikov@google.com>
* elfcore.h (elf_core_file_p): Warn about core truncation.
2008-05-07 Bob Wilson <bob.wilson@acm.org>
* elf32-xtensa.c (xtensa_property_section_name): New.

30
bfd/elfcore.h
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@ -1,6 +1,6 @@
/* ELF core file support for BFD.
Copyright 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2005, 2007
Free Software Foundation, Inc.
Copyright 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2005, 2007,
2008 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
@ -227,6 +227,32 @@ elf_core_file_p (bfd *abfd)
if (! bfd_section_from_phdr (abfd, i_phdrp + phindex, (int) phindex))
goto fail;
/* Check for core truncation. */
{
bfd_size_type high = 0;
struct stat statbuf;
for (phindex = 0; phindex < i_ehdrp->e_phnum; ++phindex)
{
Elf_Internal_Phdr *p = i_phdrp + phindex;
if (p->p_filesz)
{
bfd_size_type current = p->p_offset + p->p_filesz;
if (high < current)
high = current;
}
}
if (bfd_stat (abfd, &statbuf) == 0)
{
if ((bfd_size_type) statbuf.st_size < high)
{
(*_bfd_error_handler)
(_("Warning: %B is truncated: expected core file "
"size >= %lu, found: %lu."),
abfd, (unsigned long) high, (unsigned long) statbuf.st_size);
}
}
}
/* Save the entry point from the ELF header. */
bfd_get_start_address (abfd) = i_ehdrp->e_entry;