More error checking; improve gdbm_recover

* Makefile.am (set-dist-date): New rule
(dist-hook): Catch FIXMEs in NEWS.
* NEWS: Updated.
* src/findkey.c (gdbm_bucket_element_valid_p): New function.
(_gdbm_read_entry): Validate the retrieved bucket element.
* src/gdbm.h.in (gdbm_recovery): New member: duplicate_keys.
(GDBM_BAD_HASH_TABLE): New error code.
* src/gdbmdefs.h (TYPE_WIDTH,SIGNED_TYPE_MAXIMUM)
(OFF_T_MAX): New defines.
(off_t_sum_ok): New function.
(gdbm_bucket_element_valid_p): New prototype.
* src/gdbmerrno.c: Support for GDBM_BAD_HASH_TABLE code.
* src/gdbmtool.c (recover_handler): Fix argument counting.
New argument 'summary' prints statistics summary at the end
of the run.
(export_handler,import_handler): Fix argument counting.
* src/mmap.c (SUM_FILE_SIZE): Rewrite as inlined function.
Add error checking.
(_gdbm_mapped_remap): More error checking.
* src/recover.c (run_recovery): Don't bail out on GDBM_CANNOT_REPLACE.
(gdbm_recover): Initialize duplicate_keys
* src/systems.h: Include limits.h

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gdbmerrno.c b/src/gdbmerrno.c
index 896bf70..52cfe30 100644
--- a/src/gdbmerrno.c
+++ b/src/gdbmerrno.c
@@ -134,7 +134,8 @@ const char * const gdbm_errlist[_GDBM_MAX_ERRNO+1] = {
   [GDBM_DIR_OVERFLOW]           = N_("Bucket directory overflow"),
   [GDBM_BAD_BUCKET]             = N_("Malformed bucket header"),
   [GDBM_BAD_HEADER]             = N_("Malformed database file header"),
-  [GDBM_BAD_AVAIL]              = N_("Malforemd avail_block")
+  [GDBM_BAD_AVAIL]              = N_("Malformed avail_block"),
+  [GDBM_BAD_HASH_TABLE]         = N_("Malformed hash table")
 };
 
 const char *