static void dirbuf_add(fuse_req_t req, struct dirbuf *b, const char *name, fuse_ino_t ino)
{
struct stat stbuf;
size_t oldsize = b->size;
b->size += fuse_add_direntry(req, NULL, 0, name, NULL, 0);
b->p = (char *)realloc(b->p, b->size);
memset(&stbuf, 0, sizeof(stbuf));
stbuf.st_ino = ino;
fuse_add_direntry(req, b->p + oldsize, b->size - oldsize, name, &stbuf, b->size);
}
static size_t sqfs_ll_add_direntry(fuse_req_t req, char *buf, size_t bufsize,
const char *name, const struct stat *st, off_t off) {
#if HAVE_DECL_FUSE_ADD_DIRENTRY
return fuse_add_direntry(req, buf, bufsize, name, st, off);
#else
size_t esize = fuse_dirent_size(strlen(name));
if (bufsize >= esize)
fuse_add_dirent(buf, name, st, off);
return esize;
#endif
}
void hsx_fuse_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi)
{
struct hsfs_readdir_ctx *saved_ctx, *ctx = NULL;
struct hsfs_inode *parent;
struct hsfs_super *sb;
size_t res, len = 0;
char * buf;
int err, count = 0;
DEBUG_IN("P_I(%lu), Size(%lld), Off(0x%llx)", ino, size, off);
(void)fi;
sb = fuse_req_userdata(req);
FUSE_ASSERT(sb != NULL);
parent = hsfs_ilookup(sb, ino);
FUSE_ASSERT(parent != NULL);
err = hsi_nfs3_readdir(parent, size, off, &ctx);
if(err)
goto out1;
saved_ctx = ctx;
buf = (char *) malloc(size);
if( NULL == buf){
err = ENOMEM;
goto out2;
}
while(ctx != NULL){
res = fuse_add_direntry(req, buf + len, size - len, ctx->name,
&ctx->stbuf, ctx->off);
/* From fuse doc, buf is not copied if res larger than
* requested */
if(res >= size - len)
break;
len += res;
ctx = ctx->next;
count++;
}
/* If EOF, we will return an empty buffer here. */
if (!err)
fuse_reply_buf(req, buf, len);
free(buf);
out2:
__free_ctx(saved_ctx, 0);
out1:
if(err)
fuse_reply_err(req, err);
DEBUG_OUT("with %d, %d entries returned.", err, count);
}
static void lo_do_readdir(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t offset, struct fuse_file_info *fi, int plus)
{
struct lo_dirp *d = lo_dirp(fi);
char *buf;
char *p;
size_t rem;
int err;
(void) ino;
buf = calloc(size, 1);
if (!buf)
return (void) fuse_reply_err(req, ENOMEM);
if (offset != d->offset) {
seekdir(d->dp, offset);
d->entry = NULL;
d->offset = offset;
}
p = buf;
rem = size;
while (1) {
size_t entsize;
off_t nextoff;
if (!d->entry) {
errno = 0;
d->entry = readdir(d->dp);
if (!d->entry) {
if (errno && rem == size) {
err = errno;
goto error;
}
break;
}
}
nextoff = telldir(d->dp);
if (plus) {
struct fuse_entry_param e;
err = lo_do_lookup(req, ino, d->entry->d_name, &e);
if (err)
goto error;
entsize = fuse_add_direntry_plus(req, p, rem,
d->entry->d_name,
&e, nextoff);
} else {
struct stat st = {
.st_ino = d->entry->d_ino,
.st_mode = d->entry->d_type << 12,
};
entsize = fuse_add_direntry(req, p, rem,
d->entry->d_name,
&st, nextoff);
}
if (entsize > rem)
break;
p += entsize;
rem -= entsize;
d->entry = NULL;
d->offset = nextoff;
}
fuse_reply_buf(req, buf, size - rem);
free(buf);
return;
error:
free(buf);
fuse_reply_err(req, err);
}
static void lo_readdir(fuse_req_t req, fuse_ino_t ino, size_t size,
off_t offset, struct fuse_file_info *fi)
{
lo_do_readdir(req, ino, size, offset, fi, 0);
}
void mfs_meta_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi) {
dirbuf *dirinfo = (dirbuf *)((unsigned long)(fi->fh));
char buffer[READDIR_BUFFSIZE];
char *name,c;
const uint8_t *ptr,*eptr;
uint8_t end;
size_t opos,oleng;
uint8_t nleng;
uint32_t inode;
uint8_t type;
struct stat stbuf;
if (off<0) {
fuse_reply_err(req,EINVAL);
return;
}
pthread_mutex_lock(&(dirinfo->lock));
if (dirinfo->wasread==0 || (dirinfo->wasread==1 && off==0)) {
if (dirinfo->p!=NULL) {
free(dirinfo->p);
}
dirbuf_meta_fill(dirinfo,ino);
// syslog(LOG_WARNING,"inode: %lu , dirinfo->p: %p , dirinfo->size: %lu",(unsigned long)ino,dirinfo->p,(unsigned long)dirinfo->size);
}
dirinfo->wasread=1;
if (off>=(off_t)(dirinfo->size)) {
fuse_reply_buf(req, NULL, 0);
} else {
if (size>READDIR_BUFFSIZE) {
size=READDIR_BUFFSIZE;
}
ptr = (const uint8_t*)(dirinfo->p)+off;
eptr = (const uint8_t*)(dirinfo->p)+dirinfo->size;
opos = 0;
end = 0;
while (ptr<eptr && end==0) {
nleng = ptr[0];
ptr++;
name = (char*)ptr;
ptr+=nleng;
off+=nleng+6;
if (ptr+5<=eptr) {
inode = get32bit(&ptr);
type = get8bit(&ptr);
mfs_meta_type_to_stat(inode,type,&stbuf);
c = name[nleng];
name[nleng]=0;
oleng = fuse_add_direntry(req, buffer + opos, size - opos, name, &stbuf, off);
name[nleng] = c;
if (opos+oleng>size) {
end=1;
} else {
opos+=oleng;
}
}
}
fuse_reply_buf(req,buffer,opos);
}
pthread_mutex_unlock(&(dirinfo->lock));
}
static void overlay_readdir_full(fuse_req_t req, size_t size, off_t offset, struct workspace_dh_struct *dh)
{
unsigned int error=0;
char *buff=NULL;
size_t pos=0;
size_t dirent_size;
struct stat st;
char *name=NULL;
struct directory_struct *directory=dh->directory;
struct overlay_readdir_struct *overlay_readdir=(struct overlay_readdir_struct *)dh->handle.data;
struct entry_struct *entry, *result;
struct inode_struct *inode;
struct name_struct xname={NULL, 0, 0};
unsigned char dtype=0;
int res;
memset(&st, 0, sizeof(struct stat));
buff=malloc(size);
if (! buff) {
error=ENOMEM;
goto error;
}
if (lock_directory(directory, _DIRECTORY_LOCK_EXCL)==-1) {
free(buff);
buff=NULL;
error=EAGAIN;
goto error;
}
while (pos<size) {
if (offset==0) {
inode=dh->parent->inode;
/* the . entry */
st.st_ino = inode->ino;
st.st_mode = S_IFDIR;
name = (char *) dotname;
} else if (offset==1) {
/* the .. entry */
if ( ! dh->parent->parent ) {
inode=dh->parent->inode;
st.st_ino = inode->ino;
} else {
struct entry_struct *parent=dh->parent->parent;
inode=parent->inode;
st.st_ino=inode->ino;
}
st.st_mode = S_IFDIR;
name = (char *) dotdotname;
} else {
if (! dh->entry) {
readdir:
res=get_direntry(overlay_readdir, &xname, &dtype, &error);
if (res<=0) {
if (res==-1) {
free(buff);
unlock_directory(directory, _DIRECTORY_LOCK_EXCL);
goto error;
}
dh->mode |= _WORKSPACE_READDIR_MODE_FINISH;
break;
}
xname.len=strlen(xname.name);
calculate_nameindex(&xname);
error=0;
entry=create_entry(dh->parent, &xname);
inode=create_inode();
if (entry && inode) {
result=insert_entry_batch(directory, entry, &error, 0);
if (result==entry) {
entry->inode->mode=DTTOIF(dtype);
add_inode_hashtable(inode, increase_inodes_workspace, (void *) dh->object->workspace_mount);
inode->alias=entry;
entry->inode=inode;
adjust_pathmax(dh->pathinfo.len + 1 + xname.len);
} else {
if (error==EEXIST) {
destroy_entry(entry);
entry=result;
free(inode);
inode=entry->inode;
} else {
free(buff);
destroy_entry(entry);
free(inode);
goto error;
}
}
st.st_mode=entry->inode->mode;
st.st_ino=entry->inode->ino;
name=entry->name.name;
} else {
if (entry) {
destroy_entry(entry);
entry=NULL;
}
if (inode) {
free(inode);
inode=NULL;
}
error=ENOMEM;
free(buff);
goto error;
}
dh->entry=entry;
} else {
entry=dh->entry;
st.st_ino=entry->inode->ino;
st.st_mode=entry->inode->mode;
name=entry->name.name;
}
}
dirent_size=fuse_add_direntry(req, buff+pos, size-pos, name, &st, offset+1);
if (pos + dirent_size > size) {
dh->offset = offset + 1;
break;
}
/* increase counter and clear the various fields */
dh->entry=NULL; /* forget current entry to force readdir */
offset++;
pos += dirent_size;
}
unlock_directory(directory, _DIRECTORY_LOCK_EXCL);
fuse_reply_buf(req, buff, pos);
free(buff);
buff=NULL;
return;
error:
fuse_reply_err(req, error);
}
static void overlay_readdir_virtual(fuse_req_t req, size_t size, off_t offset, struct workspace_dh_struct *dh)
{
unsigned int error=0;
char *buff=NULL;
size_t pos=0;
size_t dirent_size;
struct stat st;
char *name=NULL;
struct name_struct xname={NULL, 0, 0};
struct entry_struct *entry=NULL;
struct inode_struct *inode=NULL;
struct directory_struct *directory=dh->directory;
struct overlay_readdir_struct *overlay_readdir=(struct overlay_readdir_struct *)dh->handle.data;
unsigned char dtype=0;
memset(&st, 0, sizeof(struct stat));
buff=malloc(size);
if (! buff) {
error=ENOMEM;
goto error;
}
if (lock_directory(directory, _DIRECTORY_LOCK_READ)==-1) {
free(buff);
buff=NULL;
error=EAGAIN;
goto error;
}
while (pos<size) {
if (offset==0) {
inode=dh->parent->inode;
/* the . entry */
st.st_ino = inode->ino;
st.st_mode = S_IFDIR;
name = (char *) dotname;
} else if (offset==1) {
/* the .. entry */
if (! dh->parent->parent ) {
inode=dh->parent->inode;
st.st_ino = inode->ino;
} else {
struct entry_struct *parent=dh->parent->parent;
inode=parent->inode;
st.st_ino=inode->ino;
}
st.st_mode = S_IFDIR;
name = (char *) dotdotname;
} else {
if (! dh->entry) {
readdir:
entry=(struct entry_struct *) overlay_readdir->data;
if (entry) {
overlay_readdir->data=(void *) entry->name_next;
} else {
dh->mode |= _WORKSPACE_READDIR_MODE_FINISH;
break;
}
dh->entry=entry;
} else {
entry=dh->entry;
}
name=entry->name.name;
st.st_mode=entry->inode->mode;
st.st_ino=entry->inode->ino;
}
dirent_size=fuse_add_direntry(req, buff+pos, size-pos, name, &st, offset+1);
if (pos + dirent_size > size) {
dh->offset=offset + 1;
break;
}
/* increase counter and clear the various fields */
offset++;
pos += dirent_size;
dh->entry=NULL;
}
fuse_reply_buf(req, buff, pos);
unlock_directory(directory, _DIRECTORY_LOCK_READ);
free(buff);
buff=NULL;
return;
error:
fuse_reply_err(req, error);
}
static void workspace_nfs_readdir_simple(fuse_req_t req, size_t size, off_t offset, struct workspace_dh_struct *dh)
{
struct resource_struct *resource=dh->object->resource;
struct net_nfs_export_struct *nfs_export=(struct net_nfs_export_struct *) resource->data;
struct nfs_context *nfs_ctx=(struct nfs_context *) nfs_export->data;
unsigned int error=0;
char *buff=NULL;
size_t pos=0;
size_t dirent_size;
char *name=NULL;
struct directory_struct *directory=dh->directory;
struct nfsdir *dir=(struct nfsdir *) dh->handle.data;
struct entry_struct *entry, *result;
struct inode_struct *inode;
struct name_struct xname={NULL, 0, 0};
struct stat st;
memset(&st, 0, sizeof(struct stat));
buff=malloc(size);
if (! buff) {
error=ENOMEM;
goto error;
}
if (lock_directory(directory, _DIRECTORY_LOCK_EXCL)==-1) {
free(buff);
buff=NULL;
error=EAGAIN;
goto error;
}
while (pos<size) {
if (offset==0) {
inode=dh->parent->inode;
/* the . entry */
st.st_ino = inode->ino;
st.st_mode = S_IFDIR;
name = (char *) dotname;
} else if (offset==1) {
/* the .. entry */
if (! dh->parent->parent ) {
inode=dh->parent->inode;
st.st_ino = inode->ino;
} else {
struct entry_struct *parent=dh->parent->parent;
inode=parent->inode;
st.st_ino=inode->ino;
}
st.st_mode = S_IFDIR;
name = (char *) dotdotname;
} else {
if (! dh->entry) {
struct nfsdirent *de;
readdir:
pthread_mutex_lock(&nfs_export->mutex);
de=nfs_readdir(nfs_ctx, dir);
pthread_mutex_unlock(&nfs_export->mutex);
if (de) {
if (strcmp(de->name, ".")==0 || strcmp(de->name, "..")==0) continue;
xname.name=de->name;
xname.len=strlen(xname.name);
calculate_nameindex(&xname);
} else {
dh->mode |= _WORKSPACE_READDIR_MODE_FINISH;
break;
}
error=0;
entry=create_entry(dh->parent, &xname);
inode=create_inode();
if (entry && inode) {
result=insert_entry_batch(directory, entry, &error, 0);
if (result==entry) {
struct workspace_object_struct *export_object=NULL;
inode->mode = translate_libnfs_type(de->type);
inode->mode |= de->mode;
add_inode_hashtable(inode, increase_inodes_workspace, (void *) dh->object->workspace_mount);
inode->alias=entry;
entry->inode=inode;
adjust_pathmax(dh->pathinfo.len + 1 + xname.len);
} else {
if (error==EEXIST) {
destroy_entry(entry);
entry=result;
free(inode);
inode=entry->inode;
} else {
free(buff);
destroy_entry(entry);
free(inode);
goto error;
}
}
st.st_mode=entry->inode->mode;
st.st_ino=entry->inode->ino;
name=entry->name.name;
} else {
if (entry) {
destroy_entry(entry);
entry=NULL;
}
if (inode) {
free(inode);
inode=NULL;
}
error=ENOMEM;
free(buff);
goto error;
}
dh->entry=entry;
} else {
st.st_ino=dh->entry->inode->ino;
st.st_mode=dh->entry->inode->mode;
name=dh->entry->name.name;
}
}
dirent_size=fuse_add_direntry(req, buff+pos, size-pos, name, &st, offset+1);
if (pos + dirent_size > size) {
dh->offset = offset + 1;
break;
}
/* increase counter and clear the various fields */
dh->entry=NULL; /* forget current entry to force readdir */
offset++;
pos += dirent_size;
}
unlock_directory(directory, _DIRECTORY_LOCK_EXCL);
fuse_reply_buf(req, buff, pos);
free(buff);
buff=NULL;
return;
error:
fuse_reply_err(req, error);
}
