diff options
Diffstat (limited to 'locale/programs/locarchive.c')
| -rw-r--r-- | locale/programs/locarchive.c | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/locale/programs/locarchive.c b/locale/programs/locarchive.c index 9e316d3a0d..e6f7f7fa48 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; |