void rozofs_ll_lookup_nb(fuse_req_t req, fuse_ino_t parent, const char *name)
{
ientry_t *ie = 0;
ientry_t *nie = 0;
epgw_lookup_arg_t arg;
int ret;
void *buffer_p = NULL;
int trc_idx;
mattr_obj_t mattr_obj;
struct fuse_entry_param fep;
struct stat stbuf;
int allocated = 0;
int len_name;
fuse_ino_t child = 0;
// int local_lookup_success = 0;
uint32_t lookup_flags=0;
int extra_length = 0;
fuse_ino_t ino = 0;
int trace_flag = 0;
/*
** Update the IO statistics
*/
rozofs_thr_cnt_update(rozofs_thr_counter[ROZOFSMOUNT_COUNTER_LOOKUP], 1);
extra_length = rozofs_check_extra_inode_in_lookup((char*)name, &len_name);
if (extra_length !=0)
{
uint8_t *pdata_p;
uint32_t *lookup_flags_p = (uint32_t*)&name[len_name+1];
lookup_flags =*lookup_flags_p;
if (extra_length > 4)
{
pdata_p = (uint8_t*)&name[len_name+1];
pdata_p+=sizeof(uint32_t);
fuse_ino_t *inode_p = (fuse_ino_t*)pdata_p;
child = *inode_p;
ino = child;
}
}
trace_flag = lookup_flags;
if (ino != 0) {trace_flag |=(1<<31);}
trc_idx = rozofs_trc_req_name_flags(srv_rozofs_ll_lookup,parent,(char*)name,(int)(trace_flag));
/*
** allocate a context for saving the fuse parameters
*/
buffer_p = rozofs_fuse_alloc_saved_context();
if (buffer_p == NULL)
{
severe("out of fuse saved context");
errno = ENOMEM;
goto error;
}
SAVE_FUSE_PARAM(buffer_p,req);
SAVE_FUSE_PARAM(buffer_p,parent);
SAVE_FUSE_STRING(buffer_p,name);
SAVE_FUSE_PARAM(buffer_p,trc_idx);
SAVE_FUSE_PARAM(buffer_p,ino);
SAVE_FUSE_PARAM(buffer_p,lookup_flags);
DEBUG("lookup (%lu,%s)\n", (unsigned long int) parent, name);
START_PROFILING_NB(buffer_p,rozofs_ll_lookup);
len_name=strlen(name);
if (len_name > ROZOFS_FILENAME_MAX) {
errno = ENAMETOOLONG;
goto error;
}
/*
** Check the case of NFS that attempt to revalidate an inode that has been flushed from the cache
*/
if ((strcmp(name,"..")== 0) || (strcmp(name,".")==0))
{
fid_t lookup_fid;
rozofs_inode_t *inode_p = (rozofs_inode_t*)lookup_fid;
inode_p->fid[0]=0;
inode_p->s.eid= exportclt.eid;
inode_p->fid[1]=parent;
arg.arg_gw.eid = exportclt.eid;
memcpy(arg.arg_gw.parent,lookup_fid, sizeof (uuid_t));
arg.arg_gw.name = (char*)name;
/*
** Queue the request and attempt to check if there is already the same
** request queued
*/
if (rozofs_lookup_insert_queue(buffer_p,parent,name,req,trc_idx,lookup_flags)== 1)
{
/*
** There is already a pending request, so nothing to send to the export
*/
gprofiler->rozofs_ll_lookup_agg[P_COUNT]++;
rozofs_fuse_release_saved_context(buffer_p);
return;
}
ret = rozofs_expgateway_send_routing_common(arg.arg_gw.eid,lookup_fid,EXPORT_PROGRAM, EXPORT_VERSION,
EP_LOOKUP,(xdrproc_t) xdr_epgw_lookup_arg_t,(void *)&arg,
rozofs_ll_lookup_cbk,buffer_p);
if (ret < 0) goto error;
/*
** no error just waiting for the answer
*/
return;
}
if (!(ie = get_ientry_by_inode(parent))) {
errno = ENOENT;
goto error;
}
/*
** check for direct access
*/
if (strncmp(name,"@rozofs@",8) == 0)
{
ret = rozofs_parse_object_name((char*)(name+8),&mattr_obj);
if (ret == 0)
{
/*
** successful parsing-> attempt to create a fake ientry
*/
//errno = ENOENT;
goto lookup_objectmode;
}
}
/*
** Queue the request and attempt to check if there is already the same
** request queued
*/
if (rozofs_lookup_insert_queue(buffer_p,parent,name,req,trc_idx,lookup_flags)== 1)
{
/*
** There is already a pending request, so nothing to send to the export
*/
gprofiler->rozofs_ll_lookup_agg[P_COUNT]++;
rozofs_fuse_release_saved_context(buffer_p);
return;
}
/*
** check if the lookup is a lookup revalidate. In such a case, the VFS provides*
** the inode. So if the i-node attributes are fine, we do not worry
*/
if ((child != 0) && ((lookup_flags & 0x100) == 0))
{
uint64_t attr_us = rozofs_tmr_get_attr_us(rozofs_is_directory_inode(ino));
nie = get_ientry_by_inode(child);
if (nie != NULL)
{
if (
/* check regular file */
((((nie->timestamp+attr_us) > rozofs_get_ticker_us()) || (rozofs_mode == 1))&&(S_ISREG(nie->attrs.attrs.mode))) ||
/* check directory */
(((nie->pending_getattr_cnt>0)||((nie->timestamp+attr_us) > rozofs_get_ticker_us()))&&(S_ISDIR(nie->attrs.attrs.mode)))
)
{
/*
** check if parent and child are either deleted/deleted or active/active
*/
int trash_state = 0;
if (rozofs_inode_is_del_pending(ie->attrs.attrs.fid)) trash_state = 1;
if (rozofs_inode_is_del_pending(nie->attrs.attrs.fid)) trash_state |= 1<<1;
switch (trash_state)
{
case 2:
if (rozofs_inode_is_trash(nie->attrs.attrs.fid) == 0)
{
errno = ENOENT;
goto error;
}
mattr_to_stat(&nie->attrs, &stbuf,exportclt.bsize);
stbuf.st_ino = child;
/*
** set nlinks to reflect . & ..
*/
stbuf.st_nlink =2;
goto success;
break;
case 0:
case 3:
mattr_to_stat(&nie->attrs, &stbuf,exportclt.bsize);
stbuf.st_ino = child;
goto success;
break;
default:
errno = ENOENT;
goto error;
break;
}
}
}
}
/*
** fill up the structure that will be used for creating the xdr message
*/
arg.arg_gw.eid = exportclt.eid;
memcpy(arg.arg_gw.parent,ie->fid, sizeof (uuid_t));
arg.arg_gw.name = (char*)name;
/*
** now initiates the transaction towards the remote end
*/
/*
** In case the EXPORT LBG is down ans we know this ientry, let's respond to
** the requester with the current available information
*/
#if 1
if ((common_config.client_fast_reconnect) && (child != 0)) {
expgw_tx_routing_ctx_t routing_ctx;
if (expgw_get_export_routing_lbg_info(arg.arg_gw.eid,ie->fid,&routing_ctx) != 0) {
goto error;
}
if (north_lbg_get_state(routing_ctx.lbg_id[0]) != NORTH_LBG_UP) {
if (!(nie = get_ientry_by_inode(child))) {
errno = ENOENT;
goto error;
}
mattr_to_stat(&nie->attrs, &stbuf,exportclt.bsize);
stbuf.st_ino = child;
goto success;
}
}
#endif
#if 1
ret = rozofs_expgateway_send_routing_common(arg.arg_gw.eid,ie->fid,EXPORT_PROGRAM, EXPORT_VERSION,
EP_LOOKUP,(xdrproc_t) xdr_epgw_lookup_arg_t,(void *)&arg,
rozofs_ll_lookup_cbk,buffer_p);
#else
ret = rozofs_export_send_common(&exportclt,EXPORT_PROGRAM, EXPORT_VERSION,
EP_LOOKUP,(xdrproc_t) xdr_epgw_lookup_arg_t,(void *)&arg,
rozofs_ll_lookup_cbk,buffer_p);
#endif
if (ret < 0) {
/*
** In case of fast reconnect mode let's respond with the previously knows
** parameters instead of failing
*/
if (common_config.client_fast_reconnect) {
if (child != 0) {
if (!(nie = get_ientry_by_inode(child))) {
errno = ENOENT;
goto error;
}
mattr_to_stat(&nie->attrs, &stbuf,exportclt.bsize);
stbuf.st_ino = child;
goto success;
}
}
goto error;
}
/*
** no error just waiting for the answer
*/
return;
error:
fuse_reply_err(req, errno);
/*
** remove the context from the lookup queue
*/
if (buffer_p != NULL) ruc_objRemove(buffer_p);
/*
** release the buffer if has been allocated
*/
rozofs_trc_rsp(srv_rozofs_ll_lookup,parent,NULL,1,trc_idx);
out:
STOP_PROFILING_NB(buffer_p,rozofs_ll_lookup);
if (buffer_p != NULL) rozofs_fuse_release_saved_context(buffer_p);
return;
/**
* case of the object mode
*/
lookup_objectmode:
if (!(nie = get_ientry_by_fid(mattr_obj.fid))) {
nie = alloc_ientry(mattr_obj.fid);
allocated=1;
}
/**
* update the timestamp in the ientry context
*/
nie->timestamp = rozofs_get_ticker_us();
if (allocated)
{
/*
** update the attributes in the ientry
*/
memcpy(nie->attrs.attrs.fid, mattr_obj.fid, sizeof(fid_t));
nie->attrs.attrs.cid = mattr_obj.cid;
memcpy(nie->attrs.attrs.sids, mattr_obj.sids, sizeof(sid_t)*ROZOFS_SAFE_MAX);
nie->attrs.attrs.size = mattr_obj.size;
nie->attrs.attrs.nlink = 1;
nie->attrs.attrs.mode = S_IFREG | S_IRWXU | S_IRWXG | S_IRWXO ;
nie->attrs.attrs.uid = 0;
nie->attrs.attrs.gid = 0;
nie->nlookup = 0;
}
mattr_to_stat(&nie->attrs, &stbuf,exportclt.bsize);
stbuf.st_ino = nie->inode;
// info("FDL %d mode %d uid %d gid %d",allocated,nie->attrs.attrs.mode,nie->attrs.attrs.uid,nie->attrs.attrs.gid);
success:
memset(&fep, 0, sizeof (fep));
fep.ino =stbuf.st_ino;
fep.attr_timeout = rozofs_tmr_get_attr(rozofs_is_directory_inode(nie->inode));
fep.entry_timeout = rozofs_tmr_get_entry(rozofs_is_directory_inode(nie->inode));
memcpy(&fep.attr, &stbuf, sizeof (struct stat));
nie->nlookup++;
rozofs_inode_t * finode = (rozofs_inode_t *) nie->attrs.attrs.fid;
fep.generation = finode->fid[0];
rz_fuse_reply_entry(req, &fep);
rozofs_trc_rsp(srv_rozofs_ll_lookup,(nie==NULL)?0:nie->inode,(nie==NULL)?NULL:nie->attrs.attrs.fid,0,trc_idx);
goto out;
}
void rozofs_ll_open_nb(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) {
ientry_t *ie = 0;
int ret;
void *buffer_p = NULL;
epgw_mfile_arg_t arg;
file_t *file = NULL;
errno = 0;
/*
** Update the IO statistics
*/
rozofs_thr_cnt_update(rozofs_thr_counter[ROZOFSMOUNT_COUNTER_OTHER], 1);
int trc_idx = rozofs_trc_req_flags(srv_rozofs_ll_open,ino,NULL,fi->flags);
/*
** allocate a context for saving the fuse parameters
*/
buffer_p = rozofs_fuse_alloc_saved_context();
if (buffer_p == NULL)
{
severe("out of fuse saved context");
errno = ENOMEM;
goto error;
}
SAVE_FUSE_PARAM(buffer_p,req);
SAVE_FUSE_PARAM(buffer_p,ino);
SAVE_FUSE_PARAM(buffer_p,trc_idx);
SAVE_FUSE_STRUCT(buffer_p,fi,sizeof( struct fuse_file_info));
START_PROFILING_NB(buffer_p,rozofs_ll_open);
DEBUG("open (%lu)\n", (unsigned long int) ino);
if (!(ie = get_ientry_by_inode(ino))) {
errno = ENOENT;
goto error;
}
/*
** check if it is configured in block mode, in that case we avoid
** a transaction with the exportd
*/
if ((rozofs_mode == 1) ||
((ie->timestamp+rozofs_tmr_get_attr_us(rozofs_is_directory_inode(ino))) > rozofs_get_ticker_us()))
{
/*
** allocate a context for the file descriptor
*/
file = rozofs_file_working_var_init(ie,ie->fid);
if (rozofs_cache_mode == 1)
fi->direct_io = 1;
else
{
if (rozofs_cache_mode == 2)
fi->keep_cache = 1;
}
/*
** save the opening flags
*/
file->open_flags = fi->flags;
fi->fh = (unsigned long) file;
/*
** update the statistics
*/
rzkpi_file_stat_update(ie->pfid,(int)0,RZKPI_OPEN);
/*
** Take care of the file caching cache for hybrid SSD/HDD configuration
*/
rzcachetrack_file(ie->pfid,ie->attrs.attrs.size,ie->attrs.attrs.mtime);
/*
** send back response to fuse
*/
fuse_reply_open(req, fi);
goto out;
}
/*
** get the attributes of the file
*/
arg.arg_gw.eid = exportclt.eid;
memcpy(arg.arg_gw.fid, ie->fid, sizeof (uuid_t));
/*
** now initiates the transaction towards the remote end
*/
/*
** In case the EXPORT LBG is down and we know this ientry, let's respond to
** the requester with the current available information
*/
if (common_config.client_fast_reconnect) {
expgw_tx_routing_ctx_t routing_ctx;
if (expgw_get_export_routing_lbg_info(arg.arg_gw.eid,ie->fid,&routing_ctx) != 0) {
goto error;
}
if (north_lbg_get_state(routing_ctx.lbg_id[0]) != NORTH_LBG_UP) {
goto short_cut;
}
}
#if 1
ret = rozofs_expgateway_send_routing_common(arg.arg_gw.eid,ie->fid,EXPORT_PROGRAM, EXPORT_VERSION,
EP_GETATTR,(xdrproc_t) xdr_epgw_mfile_arg_t,(void *)&arg,
rozofs_ll_open_cbk,buffer_p);
#else
ret = rozofs_export_send_common(&exportclt,EXPORT_PROGRAM, EXPORT_VERSION,
EP_GETATTR,(xdrproc_t) xdr_epgw_mfile_arg_t,(void *)&arg,
rozofs_ll_open_cbk,buffer_p);
#endif
if (ret < 0) {
/*
** In case of fast reconnect mode let's respond with the previously knows
** parameters instead of failing
*/
if (common_config.client_fast_reconnect) {
short_cut:
/*
** allocate a context for the file descriptor
*/
file = rozofs_file_working_var_init(ie,ie->fid);
if (rozofs_cache_mode == 1)
fi->direct_io = 1;
else
{
if (rozofs_cache_mode == 2)
fi->keep_cache = 1;
}
/*
** save the opening flags
*/
file->open_flags = fi->flags;
fi->fh = (unsigned long) file;
/*
** update the statistics
*/
rzkpi_file_stat_update(ie->pfid,(int)0,RZKPI_OPEN);
/*
** Take care of the file caching cache for hybrid SSD/HDD configuration
*/
rzcachetrack_file(ie->pfid,ie->attrs.attrs.size,ie->attrs.attrs.mtime);
/*
** send back response to fuse
*/
fuse_reply_open(req, fi);
goto out;
}
goto error;
}
/*
** no error just waiting for the answer
*/
return;
error:
fuse_reply_err(req, errno);
/*
** release the buffer if has been allocated
*/
out:
rozofs_trc_rsp_attr(srv_rozofs_ll_open,(fuse_ino_t)file,(ie==NULL)?NULL:ie->attrs.attrs.fid,(errno==0)?0:1,(ie==NULL)?-1:ie->attrs.attrs.size,trc_idx);
STOP_PROFILING_NB(buffer_p,rozofs_ll_open);
if (buffer_p != NULL) rozofs_fuse_release_saved_context(buffer_p);
return;
}