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Bug #20938 » ceph-fuse.patch

Zheng Yan, 08/09/2017 10:39 AM

View differences:

src/client/Client.cc
return r;
}
int Client::_lookup(Inode *dir, const string& dname, int mask, InodeRef *target,
const UserPerm& perms)
int Client::_lookup_dcache(Inode *dir, const string& dname, int mask, InodeRef *target,
const UserPerm& perms)
{
int r = 0;
Dentry *dn = NULL;
if (!dir->is_dir()) {
r = -ENOTDIR;
goto done;
return -ENOTDIR;
}
if (dname == "..") {
......
*target = dir;
else
*target = dir->get_first_parent()->dir->parent_inode; //dirs can't be hard-linked
goto done;
return 0;
}
if (dname == ".") {
*target = dir;
goto done;
return 0;
}
if (dname.length() > NAME_MAX) {
r = -ENAMETOOLONG;
goto done;
return -ENAMETOOLONG;
}
if (dname == cct->_conf->client_snapdir &&
dir->snapid == CEPH_NOSNAP) {
*target = open_snapdir(dir);
goto done;
return 0;
}
if (dir->dir &&
......
return -ENOENT;
}
}
return -EAGAIN;
r = _do_lookup(dir, dname, mask, target, perms);
goto done;
hit_dn:
hit_dn:
if (dn->inode) {
*target = dn->inode;
} else {
r = -ENOENT;
}
touch_dn(dn);
return dn->inode ? 0 : -ENOENT;
}
int Client::_lookup(Inode *dir, const string& dname, int mask, InodeRef *target,
const UserPerm& perms)
{
int r = _lookup_dcache(dir, dname, mask, target, perms);
if (r == -EAGAIN)
r = _do_lookup(dir, dname, mask, target, perms);
done:
if (r < 0)
ldout(cct, 10) << "_lookup " << *dir << " " << dname << " = " << r << dendl;
else
......
string dname(name);
InodeRef in;
r = _lookup(parent, dname, CEPH_STAT_CAP_INODE_ALL, &in, perms);
if (r < 0) {
r = _lookup_dcache(parent, dname, 0, &in, perms);
if (r < 0 && r != -EAGAIN) {
attr->st_ino = 0;
goto out;
}
// Avoid lookup CEPH_STAT_CAP_INODE_ALL when user of libcephfs
// has already cached the inode.
if (r == -EAGAIN || in->ll_ref == 0) {
r = _lookup(parent, dname, CEPH_STAT_CAP_INODE_ALL, &in, perms);
if (r < 0) {
attr->st_ino = 0;
goto out;
}
}
assert(in);
fill_stat(in, attr);
_ll_get(in.get());
src/client/Client.h
int _do_lookup(Inode *dir, const string& name, int mask, InodeRef *target,
const UserPerm& perms);
int _lookup_dcache(Inode *dir, const string& dname, int mask, InodeRef *target,
const UserPerm& perm);
int _lookup(Inode *dir, const string& dname, int mask, InodeRef *target,
const UserPerm& perm);
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