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authorUlrich Drepper <drepper@redhat.com>2009-04-18 12:12:33 +0000
committerUlrich Drepper <drepper@redhat.com>2009-04-18 12:12:33 +0000
commit59a7162b17f55cb292844e37ceb9c3b0a1994080 (patch)
tree721f7ab97febaeb0c390b0f3f812866600d2482a /locale
parent0588a9cb6275025a62d89b94bcde1a9bb13e9c69 (diff)
downloadglibc-59a7162b17f55cb292844e37ceb9c3b0a1994080.tar.gz
* locale/programs/locarchive.c (open_archive): Map the entire file
and not just the administrative data. (add_locale): When we find a hash sum match compare the content to be sure.
Diffstat (limited to 'locale')
-rw-r--r--locale/programs/locarchive.c40
1 files changed, 31 insertions, 9 deletions
diff --git a/locale/programs/locarchive.c b/locale/programs/locarchive.c
index 42e661846e..ada8ab49bf 100644
--- a/locale/programs/locarchive.c
+++ b/locale/programs/locarchive.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -380,7 +380,7 @@ enlarge_archive (struct locarhandle *ah, const struct locarhead *head)
= ((char *) ah->addr
+ oldnamehashtab[oldlocrecarray[cnt - 1].cnt].name_offset);
- add_alias (&new_ah,
+ add_alias (&new_ah,
((char *) ah->addr
+ oldnamehashtab[oldlocrecarray[cnt].cnt].name_offset),
0, oldname, &last_locrec_offset);
@@ -517,9 +517,9 @@ open_archive (struct locarhandle *ah, bool readonly)
ah->len = (head.sumhash_offset
+ head.sumhash_size * sizeof (struct sumhashent));
- /* Now we know how large the administrative information part is.
- Map all of it. */
- ah->addr = mmap64 (NULL, ah->len, PROT_READ | (readonly ? 0 : PROT_WRITE),
+ /* Map the entire file. We might need to compare the category data
+ in the file with the newly added data. */
+ ah->addr = mmap64 (NULL, st.st_size, PROT_READ | (readonly ? 0 : PROT_WRITE),
MAP_SHARED, fd, 0);
if (ah->addr == MAP_FAILED)
{
@@ -760,10 +760,32 @@ add_locale (struct locarhandle *ah,
{
if (memcmp (data[cnt].sum, sumhashtab[idx].sum, 16) == 0)
{
- /* Found it. */
- file_offsets[cnt] = sumhashtab[idx].file_offset;
- --num_new_offsets;
- break;
+ /* Check the content, there could be a collision of
+ the hash sum.
+
+ Unfortunately the sumhashent record does not include
+ the size of the stored data. So we have to search for
+ it. */
+ locrecent = (struct locrecent *) ((char *) ah->addr
+ + head->locrectab_offset);
+ size_t iloc;
+ for (iloc = 0; iloc < head->locrectab_used; ++iloc)
+ if (locrecent[iloc].refs != 0
+ && (locrecent[iloc].record[cnt].offset
+ == sumhashtab[idx].file_offset))
+ break;
+
+ if (iloc != head->locrectab_used
+ && data[cnt].size == locrecent[iloc].record[cnt].len
+ && memcmp (data[cnt].addr,
+ (char *) ah->addr + sumhashtab[idx].file_offset,
+ data[cnt].size) == 0)
+ {
+ /* Found it. */
+ file_offsets[cnt] = sumhashtab[idx].file_offset;
+ --num_new_offsets;
+ break;
+ }
}
idx += incr;