LU-10092 First phase of persistent client cache project merging

[fs/lustre-release.git] / lustre / llite / dir.c

diff --git a/lustre/llite/dir.c b/lustre/llite/dir.c
index 06f092e..a2d3d4b 100644 (file)
--- a/lustre/llite/dir.c
+++ b/lustre/llite/dir.c
@@ -1982,6 +1982,43 @@ migrate_free:
                RETURN(ll_ioctl_fsgetxattr(inode, cmd, arg));
        case LL_IOC_FSSETXATTR:
                RETURN(ll_ioctl_fssetxattr(inode, cmd, arg));
+       case LL_IOC_PCC_DETACH_BY_FID: {
+               struct lu_pcc_detach_fid *detach;
+               struct lu_fid *fid;
+               struct inode *inode2;
+               unsigned long ino;
+
+               OBD_ALLOC_PTR(detach);
+               if (detach == NULL)
+                       RETURN(-ENOMEM);
+
+               if (copy_from_user(detach,
+                                  (const struct lu_pcc_detach_fid __user *)arg,
+                                  sizeof(*detach)))
+                       GOTO(out_detach, rc = -EFAULT);
+
+               fid = &detach->pccd_fid;
+               ino = cl_fid_build_ino(fid, ll_need_32bit_api(sbi));
+               inode2 = ilookup5(inode->i_sb, ino, ll_test_inode_by_fid, fid);
+               if (inode2 == NULL)
+                       /* Target inode is not in inode cache, and PCC file
+                        * has aleady released, return immdiately.
+                        */
+                       GOTO(out_detach, rc = 0);
+
+               if (!S_ISREG(inode2->i_mode))
+                       GOTO(out_iput, rc = -EINVAL);
+
+               if (!inode_owner_or_capable(inode2))
+                       GOTO(out_iput, rc = -EPERM);
+
+               rc = pcc_ioctl_detach(inode2, detach->pccd_opt);
+out_iput:
+               iput(inode2);
+out_detach:
+               OBD_FREE_PTR(detach);
+               RETURN(rc);
+       }
        default:
                RETURN(obd_iocontrol(cmd, sbi->ll_dt_exp, 0, NULL,
                                     (void __user *)arg));