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* elf/dl-load.c (open_verify): Find .note.ABI-tag notes even

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in PT_NOTE segments with multiple notes.
	* elf/readelflib.c (process_elf_file): Likewise.
This commit is contained in:
Ulrich Drepper 2007-06-30 17:01:43 +00:00
parent 2f6773b574
commit 0e508a6e4a
2 changed files with 35 additions and 8 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2007-06-29 Jakub Jelinek <jakub@redhat.com>
* elf/dl-load.c (open_verify): Find .note.ABI-tag notes even
in PT_NOTE segments with multiple notes.
* elf/readelflib.c (process_elf_file): Likewise.
2007-06-22 Ulrich Drepper <drepper@redhat.com>
* nis/nis_domain_of.c (__nis_domain_of): Make the code a bit more

37
elf/readelflib.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
/* Copyright (C) 1999, 2000, 2001, 2002, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 1999 and
Jakub Jelinek <jakub@redhat.com>, 1999.
@ -127,16 +127,37 @@ process_elf_file (const char *file_name, const char *lib, int *flag,
break;
case PT_NOTE:
if (!*osversion && segment->p_filesz == 32 && segment->p_align >= 4)
if (!*osversion && segment->p_filesz >= 32 && segment->p_align >= 4)
{
ElfW(Word) *abi_note = (ElfW(Word) *) (file_contents
+ segment->p_offset);
if (abi_note [0] == 4 && abi_note [1] == 16 && abi_note [2] == 1
&& memcmp (abi_note + 3, "GNU", 4) == 0)
*osversion = (abi_note [4] << 24) |
((abi_note [5] & 0xff) << 16) |
((abi_note [6] & 0xff) << 8) |
(abi_note [7] & 0xff);
ElfW(Addr) size = segment->p_filesz;
while (abi_note [0] != 4 || abi_note [1] != 16
|| abi_note [2] != 1
|| memcmp (abi_note + 3, "GNU", 4) != 0)
{
#define ROUND(len) (((len) + sizeof (ElfW(Word)) - 1) & -sizeof (ElfW(Word)))
ElfW(Addr) note_size = 3 * sizeof (ElfW(Word))
+ ROUND (abi_note[0])
+ ROUND (abi_note[1]);
if (size - 32 < note_size || note_size == 0)
{
size = 0;
break;
}
size -= note_size;
abi_note = (void *) abi_note + note_size;
}
if (size == 0)
break;
*osversion = (abi_note [4] << 24) |
((abi_note [5] & 0xff) << 16) |
((abi_note [6] & 0xff) << 8) |
(abi_note [7] & 0xff);
}
break;