previously we'd query owner and group file attributes on all getattrs and
storing that in nfs41_file_info structure which was caused a problem for
readdirs.
when a delegation is granted by OPEN, its delegation type is passed to nfs41_name_cache_insert(). as long as the delegation is held, its name_cache_entry is kept out of the cache.exp_entries list to prevent it from expiring. an extra reference is held on the attr_cache_entry as well, so it sticks around even if the name_cache_entry is removed (a parent expires, for example). new function nfs41_name_cache_delegreturn() adds the name_cache_entry back to the list, and releases the extra attr_cache_entry reference
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
removed unused variable 'buffer_size' in lookup_rpc()
renamed map_lookup_error()'s parameter 'is_last_component' to 'last_component' to avoid conflicting with function is_last_component()
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
avoid the recursive case where state recovery operations (OPEN for reclaim and RECLAIM_COMPLETE) return BADSESSION, which kicks off another round of recovery
added a 'bool_t try_recovery' argument to compound_encode_send_decode() in place of its unused 'bufsize_in' and 'bufsize_out'. when try_recovery=FALSE, return BADSESSION/STALE_CLIENTID errors instead of attempting recovery. nfs41_open_reclaim(), nfs41_reclaim_complete(), and nfs41_destroy_session() now pass try_recovery=FALSE
during state recovery, we can now check the return values of nfs41_open_reclaim() and nfs41_reclaim_complete() for BADSESSION, and use a goto to restart session recovery
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
fixed a few cases of warning 4242: possible loss of data
wincrypt.h appears to come with windows.h in later versions of the ddk, but nfs41_client.c fails to compile in WDK 6001 without #include <wincrypt.h>
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
modified nfs41_lookup() to handle NFS4ERR_SYMLINK by setting parent=symlink and returning ERROR_REPARSE
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
previously, when the name cache encountered a missing/negative/expired entry, it returned the previous two entries as 'target' and 'parent', and nfs41_lookup() started new lookups from the filehandle in 'target'. this differs from nfs41_lookup(), which on NOENT will return NULL for the 'target' and the previous entry as 'parent'. modified name_cache_lookup() to do the same, and updated nfs41_lookup() to start new lookups from the filehandle in 'parent'
now when nfs41_lookup() gets the is_negative flag from nfs41_name_cache_lookup(), it can just return the error without needing to copy the 'target' to 'parent'
Signed-off-by: Casey Bodley <cbodley@umich.edu>
added function entry_invis() in addition to entry_has_expired(). entry_invis() returns true if entry_has_expired() or for negative entries. the is_negative flag is set for negative entries (defined as having entry->attributes == NULL), and returned by nfs41_name_cache_lookup(). when nfs41_lookup() sees this flag set, it returns the status without attempting to do any more lookups
Signed-off-by: Casey Bodley <cbodley@umich.edu>
