static struct dentry *
+#ifdef HAVE_LOOKUP_NAMEIDATA
zpl_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
+#else
+zpl_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
+#endif
{
cred_t *cr = CRED();
struct inode *ip;
int error;
+ if (dlen(dentry) > ZFS_MAXNAMELEN)
+ return ERR_PTR(-ENAMETOOLONG);
+
crhold(cr);
error = -zfs_lookup(dir, dname(dentry), &ip, 0, cr, NULL, NULL);
ASSERT3S(error, <=, 0);
crfree(cr);
+ spin_lock(&dentry->d_lock);
+ dentry->d_time = jiffies;
+#ifndef HAVE_S_D_OP
+ d_set_d_op(dentry, &zpl_dentry_operations);
+#endif /* HAVE_S_D_OP */
+ spin_unlock(&dentry->d_lock);
+
if (error) {
if (error == -ENOENT)
return d_splice_alias(NULL, dentry);
}
void
-zpl_vap_init(vattr_t *vap, struct inode *dir, struct dentry *dentry,
- zpl_umode_t mode, cred_t *cr)
+zpl_vap_init(vattr_t *vap, struct inode *dir, zpl_umode_t mode, cred_t *cr)
{
vap->va_mask = ATTR_MODE;
vap->va_mode = mode;
- vap->va_dentry = dentry;
vap->va_uid = crgetfsuid(cr);
if (dir && dir->i_mode & S_ISGID) {
}
static int
+#ifdef HAVE_CREATE_NAMEIDATA
zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
struct nameidata *nd)
+#else
+zpl_create(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
+ bool flag)
+#endif
{
cred_t *cr = CRED();
struct inode *ip;
crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
- zpl_vap_init(vap, dir, dentry, mode, cr);
+ zpl_vap_init(vap, dir, mode, cr);
+
+ error = -zfs_create(dir, dname(dentry), vap, 0, mode, &ip, cr, 0, NULL);
+ if (error == 0) {
+ error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
+ VERIFY3S(error, ==, 0);
+ d_instantiate(dentry, ip);
+ }
- error = -zfs_create(dir, (char *)dentry->d_name.name,
- vap, 0, mode, &ip, cr, 0, NULL);
kmem_free(vap, sizeof(vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
- zpl_vap_init(vap, dir, dentry, mode, cr);
+ zpl_vap_init(vap, dir, mode, cr);
vap->va_rdev = rdev;
- error = -zfs_create(dir, (char *)dentry->d_name.name,
- vap, 0, mode, &ip, cr, 0, NULL);
+ error = -zfs_create(dir, dname(dentry), vap, 0, mode, &ip, cr, 0, NULL);
+ if (error == 0)
+ d_instantiate(dentry, ip);
+
kmem_free(vap, sizeof(vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
- zpl_vap_init(vap, dir, dentry, mode | S_IFDIR, cr);
+ zpl_vap_init(vap, dir, mode | S_IFDIR, cr);
error = -zfs_mkdir(dir, dname(dentry), vap, &ip, cr, 0, NULL);
+ if (error == 0)
+ d_instantiate(dentry, ip);
+
kmem_free(vap, sizeof(vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
crhold(cr);
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
- zpl_vap_init(vap, dir, dentry, S_IFLNK | S_IRWXUGO, cr);
+ zpl_vap_init(vap, dir, S_IFLNK | S_IRWXUGO, cr);
error = -zfs_symlink(dir, dname(dentry), vap, (char *)name, &ip, cr, 0);
+ if (error == 0)
+ d_instantiate(dentry, ip);
+
kmem_free(vap, sizeof(vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (error);
}
+#ifdef HAVE_INODE_TRUNCATE_RANGE
static void
zpl_truncate_range(struct inode* ip, loff_t start, loff_t end)
{
crfree(cr);
}
+#endif /* HAVE_INODE_TRUNCATE_RANGE */
#ifdef HAVE_INODE_FALLOCATE
static long
}
#endif /* HAVE_INODE_FALLOCATE */
+static int
+#ifdef HAVE_D_REVALIDATE_NAMEIDATA
+zpl_revalidate(struct dentry *dentry, struct nameidata *nd)
+{
+ unsigned int flags = (nd ? nd->flags : 0);
+#else
+zpl_revalidate(struct dentry *dentry, unsigned int flags)
+{
+#endif /* HAVE_D_REVALIDATE_NAMEIDATA */
+ zfs_sb_t *zsb = dentry->d_sb->s_fs_info;
+ int error;
+
+ if (flags & LOOKUP_RCU)
+ return (-ECHILD);
+
+ /*
+ * After a rollback negative dentries created before the rollback
+ * time must be invalidated. Otherwise they can obscure files which
+ * are only present in the rolled back dataset.
+ */
+ if (dentry->d_inode == NULL) {
+ spin_lock(&dentry->d_lock);
+ error = time_before(dentry->d_time, zsb->z_rollback_time);
+ spin_unlock(&dentry->d_lock);
+
+ if (error)
+ return (0);
+ }
+
+ /*
+ * The dentry may reference a stale inode if a mounted file system
+ * was rolled back to a point in time where the object didn't exist.
+ */
+ if (dentry->d_inode && ITOZ(dentry->d_inode)->z_is_stale)
+ return (0);
+
+ return (1);
+}
const struct inode_operations zpl_inode_operations = {
.create = zpl_create,
.getxattr = generic_getxattr,
.removexattr = generic_removexattr,
.listxattr = zpl_xattr_list,
+#ifdef HAVE_INODE_TRUNCATE_RANGE
.truncate_range = zpl_truncate_range,
+#endif /* HAVE_INODE_TRUNCATE_RANGE */
#ifdef HAVE_INODE_FALLOCATE
.fallocate = zpl_fallocate,
#endif /* HAVE_INODE_FALLOCATE */
.removexattr = generic_removexattr,
.listxattr = zpl_xattr_list,
};
+
+dentry_operations_t zpl_dentry_operations = {
+ .d_revalidate = zpl_revalidate,
+};