*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <linux/highmem.h>
#include <linux/pagemap.h>
#include <linux/security.h>
+#include <linux/user_namespace.h>
+#ifdef HAVE_UIDGID_HEADER
+# include <linux/uidgid.h>
+#endif
#define DEBUG_SUBSYSTEM S_LLITE
#include <obd_support.h>
#include <lustre_fid.h>
-#include <lustre_lite.h>
#include <lustre_dlm.h>
-#include <lustre_ver.h>
#include "llite_internal.h"
-static int ll_create_it(struct inode *, struct dentry *,
- int, struct lookup_intent *);
-
-/*
- * Check if we have something mounted at the named dchild.
- * In such a case there would always be dentry present.
- */
-static int ll_d_mountpoint(struct dentry *dparent, struct dentry *dchild,
- struct qstr *name)
-{
- int mounted = 0;
-
- if (unlikely(dchild)) {
- mounted = d_mountpoint(dchild);
- } else if (dparent) {
- dchild = d_lookup(dparent, name);
- if (dchild) {
- mounted = d_mountpoint(dchild);
- dput(dchild);
- }
- }
- return mounted;
-}
-
-int ll_unlock(__u32 mode, struct lustre_handle *lockh)
-{
- ENTRY;
-
- ldlm_lock_decref(lockh, mode);
-
- RETURN(0);
-}
-
+static int ll_create_it(struct inode *dir, struct dentry *dentry,
+ struct lookup_intent *it,
+ void *secctx, __u32 secctxlen);
/* called from iget5_locked->find_inode() under inode_lock spinlock */
static int ll_test_inode(struct inode *inode, void *opaque)
{
- struct ll_inode_info *lli = ll_i2info(inode);
- struct lustre_md *md = opaque;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct lustre_md *md = opaque;
- if (unlikely(!(md->body->valid & OBD_MD_FLID))) {
- CERROR("MDS body missing FID\n");
- return 0;
- }
+ if (unlikely(!(md->body->mbo_valid & OBD_MD_FLID))) {
+ CERROR("MDS body missing FID\n");
+ return 0;
+ }
- if (!lu_fid_eq(&lli->lli_fid, &md->body->fid1))
- return 0;
+ if (!lu_fid_eq(&lli->lli_fid, &md->body->mbo_fid1))
+ return 0;
- return 1;
+ return 1;
}
static int ll_set_inode(struct inode *inode, void *opaque)
{
- struct ll_inode_info *lli = ll_i2info(inode);
- struct mdt_body *body = ((struct lustre_md *)opaque)->body;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct mdt_body *body = ((struct lustre_md *)opaque)->body;
- if (unlikely(!(body->valid & OBD_MD_FLID))) {
- CERROR("MDS body missing FID\n");
- return -EINVAL;
- }
+ if (unlikely(!(body->mbo_valid & OBD_MD_FLID))) {
+ CERROR("MDS body missing FID\n");
+ return -EINVAL;
+ }
- lli->lli_fid = body->fid1;
- if (unlikely(!(body->valid & OBD_MD_FLTYPE))) {
- CERROR("Can not initialize inode "DFID" without object type: "
- "valid = "LPX64"\n", PFID(&lli->lli_fid), body->valid);
- return -EINVAL;
- }
+ lli->lli_fid = body->mbo_fid1;
+ if (unlikely(!(body->mbo_valid & OBD_MD_FLTYPE))) {
+ CERROR("Can not initialize inode "DFID" without object type: "
+ "valid = %#llx\n",
+ PFID(&lli->lli_fid), body->mbo_valid);
+ return -EINVAL;
+ }
- inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mode & S_IFMT);
- if (unlikely(inode->i_mode == 0)) {
- CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
- return -EINVAL;
- }
+ inode->i_mode = (inode->i_mode & ~S_IFMT) | (body->mbo_mode & S_IFMT);
+ if (unlikely(inode->i_mode == 0)) {
+ CERROR("Invalid inode "DFID" type\n", PFID(&lli->lli_fid));
+ return -EINVAL;
+ }
- ll_lli_init(lli);
+ ll_lli_init(lli);
- return 0;
+ return 0;
}
-/*
- * Get an inode by inode number (already instantiated by the intent lookup).
- * Returns inode or NULL
+/**
+ * Get an inode by inode number(@hash), which is already instantiated by
+ * the intent lookup).
*/
struct inode *ll_iget(struct super_block *sb, ino_t hash,
struct lustre_md *md)
{
- struct inode *inode;
- ENTRY;
+ struct inode *inode;
+ int rc = 0;
+
+ ENTRY;
LASSERT(hash != 0);
inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
+ if (inode == NULL)
+ RETURN(ERR_PTR(-ENOMEM));
+
+ if (inode->i_state & I_NEW) {
+ rc = ll_read_inode2(inode, md);
+ if (rc == 0 && S_ISREG(inode->i_mode) &&
+ ll_i2info(inode)->lli_clob == NULL)
+ rc = cl_file_inode_init(inode, md);
+
+ if (rc != 0) {
+ /* Let's clear directory lsm here, otherwise
+ * make_bad_inode() will reset the inode mode
+ * to regular, then ll_clear_inode will not
+ * be able to clear lsm_md */
+ if (S_ISDIR(inode->i_mode))
+ ll_dir_clear_lsm_md(inode);
+ make_bad_inode(inode);
+ unlock_new_inode(inode);
+ iput(inode);
+ inode = ERR_PTR(rc);
+ } else {
+ inode_has_no_xattr(inode);
+ unlock_new_inode(inode);
+ }
+ } else if (is_bad_inode(inode)) {
+ iput(inode);
+ inode = ERR_PTR(-ESTALE);
+ } else if (!(inode->i_state & (I_FREEING | I_CLEAR))) {
+ rc = ll_update_inode(inode, md);
+ CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p): rc = %d\n",
+ PFID(&md->body->mbo_fid1), inode, rc);
+ if (rc != 0) {
+ if (S_ISDIR(inode->i_mode))
+ ll_dir_clear_lsm_md(inode);
+ iput(inode);
+ inode = ERR_PTR(rc);
+ }
+ }
- if (inode) {
- if (inode->i_state & I_NEW) {
- int rc = 0;
-
- ll_read_inode2(inode, md);
- if (S_ISREG(inode->i_mode) &&
- ll_i2info(inode)->lli_clob == NULL) {
- CDEBUG(D_INODE,
- "%s: apply lsm %p to inode "DFID".\n",
- ll_get_fsname(sb, NULL, 0), md->lsm,
- PFID(ll_inode2fid(inode)));
- rc = cl_file_inode_init(inode, md);
- }
- if (rc != 0) {
- make_bad_inode(inode);
- unlock_new_inode(inode);
- iput(inode);
- inode = ERR_PTR(rc);
- } else
- unlock_new_inode(inode);
- } else if (!(inode->i_state & (I_FREEING | I_CLEAR)))
- ll_update_inode(inode, md);
- CDEBUG(D_VFSTRACE, "got inode: "DFID"(%p)\n",
- PFID(&md->body->fid1), inode);
- }
RETURN(inode);
}
DECLARE_LL_D_HLIST_NODE_PTR(p);
ll_lock_dcache(dir);
- ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry, d_alias) {
+ ll_d_hlist_for_each_entry(dentry, p, &dir->i_dentry) {
spin_lock(&dentry->d_lock);
if (!list_empty(&dentry->d_subdirs)) {
struct dentry *child;
list_for_each_entry_safe(child, tmp_subdir,
&dentry->d_subdirs,
- d_u.d_child) {
+ d_child) {
if (child->d_inode == NULL)
d_lustre_invalidate(child, 1);
}
ll_unlock_dcache(dir);
}
-int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
- void *data, int flag)
+int ll_test_inode_by_fid(struct inode *inode, void *opaque)
{
- struct lustre_handle lockh;
+ return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
+}
+
+int ll_dom_lock_cancel(struct inode *inode, struct ldlm_lock *lock)
+{
+ struct lu_env *env;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct cl_layout clt = { .cl_layout_gen = 0, };
int rc;
+ __u16 refcheck;
+
+
ENTRY;
- switch (flag) {
- case LDLM_CB_BLOCKING:
- ldlm_lock2handle(lock, &lockh);
- rc = ldlm_cli_cancel(&lockh, LCF_ASYNC);
- if (rc < 0) {
- CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
- RETURN(rc);
- }
- break;
- case LDLM_CB_CANCELING: {
- struct inode *inode = ll_inode_from_resource_lock(lock);
- __u64 bits = lock->l_policy_data.l_inodebits.bits;
+ if (!lli->lli_clob) {
+ /* due to DoM read on open, there may exist pages for Lustre
+ * regular file even though cl_object is not set up yet. */
+ truncate_inode_pages(inode->i_mapping, 0);
+ RETURN(0);
+ }
- /* Inode is set to lock->l_resource->lr_lvb_inode
- * for mdc - bug 24555 */
- LASSERT(lock->l_ast_data == NULL);
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ RETURN(PTR_ERR(env));
+
+ rc = cl_object_layout_get(env, lli->lli_clob, &clt);
+ if (rc) {
+ CDEBUG(D_INODE, "Cannot get layout for "DFID"\n",
+ PFID(ll_inode2fid(inode)));
+ rc = -ENODATA;
+ } else if (clt.cl_size == 0 || clt.cl_dom_comp_size == 0) {
+ CDEBUG(D_INODE, "DOM lock without DOM layout for "DFID"\n",
+ PFID(ll_inode2fid(inode)));
+ } else {
+ enum cl_fsync_mode mode;
+ loff_t end = clt.cl_dom_comp_size - 1;
- if (inode == NULL)
- break;
+ mode = ldlm_is_discard_data(lock) ?
+ CL_FSYNC_DISCARD : CL_FSYNC_LOCAL;
+ rc = cl_sync_file_range(inode, 0, end, mode, 1);
+ truncate_inode_pages_range(inode->i_mapping, 0, end);
+ }
+ cl_env_put(env, &refcheck);
+ RETURN(rc);
+}
- /* Invalidate all dentries associated with this inode */
- LASSERT(ldlm_is_canceling(lock));
+void ll_lock_cancel_bits(struct ldlm_lock *lock, __u64 to_cancel)
+{
+ struct inode *inode = ll_inode_from_resource_lock(lock);
+ struct ll_inode_info *lli;
+ __u64 bits = to_cancel;
+ int rc;
- if (!fid_res_name_eq(ll_inode2fid(inode),
- &lock->l_resource->lr_name)) {
- LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
- PFID(ll_inode2fid(inode)), inode);
- LBUG();
- }
+ ENTRY;
- if (bits & MDS_INODELOCK_XATTR) {
- ll_xattr_cache_destroy(inode);
- bits &= ~MDS_INODELOCK_XATTR;
- }
+ if (!inode) {
+ /* That means the inode is evicted most likely and may cause
+ * the skipping of lock cleanups below, so print the message
+ * about that in log.
+ */
+ if (lock->l_resource->lr_lvb_inode)
+ LDLM_DEBUG(lock,
+ "can't take inode for the lock (%sevicted)\n",
+ lock->l_resource->lr_lvb_inode->i_state &
+ I_FREEING ? "" : "not ");
+ RETURN_EXIT;
+ }
- /* For OPEN locks we differentiate between lock modes
- * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
- if (bits & MDS_INODELOCK_OPEN)
- ll_have_md_lock(inode, &bits, lock->l_req_mode);
-
- if (bits & MDS_INODELOCK_OPEN) {
- fmode_t fmode;
-
- switch (lock->l_req_mode) {
- case LCK_CW:
- fmode = FMODE_WRITE;
- break;
- case LCK_PR:
- fmode = FMODE_EXEC;
- break;
- case LCK_CR:
- fmode = FMODE_READ;
- break;
- default:
- LDLM_ERROR(lock, "bad lock mode for OPEN lock");
- LBUG();
- }
+ if (!fid_res_name_eq(ll_inode2fid(inode),
+ &lock->l_resource->lr_name)) {
+ LDLM_ERROR(lock, "data mismatch with object "DFID"(%p)",
+ PFID(ll_inode2fid(inode)), inode);
+ LBUG();
+ }
- ll_md_real_close(inode, fmode);
+ if (bits & MDS_INODELOCK_XATTR) {
+ ll_xattr_cache_destroy(inode);
+ bits &= ~MDS_INODELOCK_XATTR;
+ }
- bits &= ~MDS_INODELOCK_OPEN;
- }
+ /* For OPEN locks we differentiate between lock modes
+ * LCK_CR, LCK_CW, LCK_PR - bug 22891 */
+ if (bits & MDS_INODELOCK_OPEN)
+ ll_have_md_lock(inode, &bits, lock->l_req_mode);
+
+ if (bits & MDS_INODELOCK_OPEN) {
+ fmode_t fmode;
- if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
- MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM))
- ll_have_md_lock(inode, &bits, LCK_MINMODE);
-
- if (bits & MDS_INODELOCK_LAYOUT) {
- struct cl_object_conf conf = {
- .coc_opc = OBJECT_CONF_INVALIDATE,
- .coc_inode = inode,
- };
-
- rc = ll_layout_conf(inode, &conf);
- if (rc < 0)
- CDEBUG(D_INODE, "cannot invalidate layout of "
- DFID": rc = %d\n",
- PFID(ll_inode2fid(inode)), rc);
+ switch (lock->l_req_mode) {
+ case LCK_CW:
+ fmode = FMODE_WRITE;
+ break;
+ case LCK_PR:
+ fmode = FMODE_EXEC;
+ break;
+ case LCK_CR:
+ fmode = FMODE_READ;
+ break;
+ default:
+ LDLM_ERROR(lock, "bad lock mode for OPEN lock");
+ LBUG();
}
- if (bits & MDS_INODELOCK_UPDATE) {
- struct ll_inode_info *lli = ll_i2info(inode);
+ ll_md_real_close(inode, fmode);
- spin_lock(&lli->lli_lock);
- lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
- spin_unlock(&lli->lli_lock);
- }
+ bits &= ~MDS_INODELOCK_OPEN;
+ }
- if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
- CDEBUG(D_INODE, "invalidating inode "DFID"\n",
- PFID(ll_inode2fid(inode)));
- truncate_inode_pages(inode->i_mapping, 0);
+ if (bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
+ MDS_INODELOCK_LAYOUT | MDS_INODELOCK_PERM |
+ MDS_INODELOCK_DOM))
+ ll_have_md_lock(inode, &bits, LCK_MINMODE);
+
+ if (bits & MDS_INODELOCK_DOM) {
+ rc = ll_dom_lock_cancel(inode, lock);
+ if (rc < 0)
+ CDEBUG(D_INODE, "cannot flush DoM data "
+ DFID": rc = %d\n",
+ PFID(ll_inode2fid(inode)), rc);
+ lock_res_and_lock(lock);
+ ldlm_set_kms_ignore(lock);
+ unlock_res_and_lock(lock);
+ }
+
+ if (bits & MDS_INODELOCK_LAYOUT) {
+ struct cl_object_conf conf = {
+ .coc_opc = OBJECT_CONF_INVALIDATE,
+ .coc_inode = inode,
+ };
+
+ rc = ll_layout_conf(inode, &conf);
+ if (rc < 0)
+ CDEBUG(D_INODE, "cannot invalidate layout of "
+ DFID": rc = %d\n",
+ PFID(ll_inode2fid(inode)), rc);
+ }
+
+ lli = ll_i2info(inode);
+
+ if (bits & MDS_INODELOCK_UPDATE)
+ lli->lli_update_atime = 1;
+
+ if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
+ CDEBUG(D_INODE, "invalidating inode "DFID" lli = %p, "
+ "pfid = "DFID"\n", PFID(ll_inode2fid(inode)),
+ lli, PFID(&lli->lli_pfid));
+ truncate_inode_pages(inode->i_mapping, 0);
+
+ if (unlikely(!fid_is_zero(&lli->lli_pfid))) {
+ struct inode *master_inode = NULL;
+ unsigned long hash;
+
+ /* This is slave inode, since all of the child dentry
+ * is connected on the master inode, so we have to
+ * invalidate the negative children on master inode */
+ CDEBUG(D_INODE, "Invalidate s"DFID" m"DFID"\n",
+ PFID(ll_inode2fid(inode)), PFID(&lli->lli_pfid));
+
+ hash = cl_fid_build_ino(&lli->lli_pfid,
+ ll_need_32bit_api(ll_i2sbi(inode)));
+
+ /* Do not lookup the inode with ilookup5, otherwise
+ * it will cause dead lock,
+ * 1. Client1 send chmod req to the MDT0, then on MDT0,
+ * it enqueues master and all of its slaves lock,
+ * (mdt_attr_set() -> mdt_lock_slaves()), after gets
+ * master and stripe0 lock, it will send the enqueue
+ * req (for stripe1) to MDT1, then MDT1 finds the lock
+ * has been granted to client2. Then MDT1 sends blocking
+ * ast to client2.
+ * 2. At the same time, client2 tries to unlink
+ * the striped dir (rm -rf striped_dir), and during
+ * lookup, it will hold the master inode of the striped
+ * directory, whose inode state is NEW, then tries to
+ * revalidate all of its slaves, (ll_prep_inode()->
+ * ll_iget()->ll_read_inode2()-> ll_update_inode().).
+ * And it will be blocked on the server side because
+ * of 1.
+ * 3. Then the client get the blocking_ast req, cancel
+ * the lock, but being blocked if using ->ilookup5()),
+ * because master inode state is NEW. */
+ master_inode = ilookup5_nowait(inode->i_sb, hash,
+ ll_test_inode_by_fid,
+ (void *)&lli->lli_pfid);
+ if (master_inode) {
+ ll_invalidate_negative_children(master_inode);
+ iput(master_inode);
+ }
+ } else {
ll_invalidate_negative_children(inode);
}
+ }
- if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
- inode->i_sb->s_root != NULL &&
- inode != inode->i_sb->s_root->d_inode)
- ll_invalidate_aliases(inode);
+ if ((bits & (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_PERM)) &&
+ inode->i_sb->s_root != NULL &&
+ inode != inode->i_sb->s_root->d_inode)
+ ll_invalidate_aliases(inode);
- iput(inode);
+ iput(inode);
+ RETURN_EXIT;
+}
+
+/* Check if the given lock may be downgraded instead of canceling and
+ * that convert is really needed. */
+int ll_md_need_convert(struct ldlm_lock *lock)
+{
+ struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
+ struct inode *inode;
+ __u64 wanted = lock->l_policy_data.l_inodebits.cancel_bits;
+ __u64 bits = lock->l_policy_data.l_inodebits.bits & ~wanted;
+ enum ldlm_mode mode = LCK_MINMODE;
+
+ if (!lock->l_conn_export ||
+ !exp_connect_lock_convert(lock->l_conn_export))
+ return 0;
+
+ if (!wanted || !bits || ldlm_is_cancel(lock))
+ return 0;
+
+ /* do not convert locks other than DOM for now */
+ if (!((bits | wanted) & MDS_INODELOCK_DOM))
+ return 0;
+
+ /* We may have already remaining bits in some other lock so
+ * lock convert will leave us just extra lock for the same bit.
+ * Check if client has other lock with the same bits and the same
+ * or lower mode and don't convert if any.
+ */
+ switch (lock->l_req_mode) {
+ case LCK_PR:
+ mode = LCK_PR;
+ case LCK_PW:
+ mode |= LCK_CR;
+ break;
+ case LCK_CW:
+ mode = LCK_CW;
+ case LCK_CR:
+ mode |= LCK_CR;
+ break;
+ default:
+ /* do not convert other modes */
+ return 0;
+ }
+
+ /* is lock is too old to be converted? */
+ lock_res_and_lock(lock);
+ if (ktime_after(ktime_get(),
+ ktime_add(lock->l_last_used,
+ ktime_set(ns->ns_dirty_age_limit, 0)))) {
+ unlock_res_and_lock(lock);
+ return 0;
+ }
+ unlock_res_and_lock(lock);
+
+ inode = ll_inode_from_resource_lock(lock);
+ ll_have_md_lock(inode, &bits, mode);
+ iput(inode);
+ return !!(bits);
+}
+
+int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
+ void *data, int flag)
+{
+ struct lustre_handle lockh;
+ __u64 bits = lock->l_policy_data.l_inodebits.bits;
+ int rc;
+
+ ENTRY;
+
+ switch (flag) {
+ case LDLM_CB_BLOCKING:
+ {
+ __u64 cancel_flags = LCF_ASYNC;
+
+ if (ll_md_need_convert(lock)) {
+ cancel_flags |= LCF_CONVERT;
+ /* For lock convert some cancel actions may require
+ * this lock with non-dropped canceled bits, e.g. page
+ * flush for DOM lock. So call ll_lock_cancel_bits()
+ * here while canceled bits are still set.
+ */
+ bits = lock->l_policy_data.l_inodebits.cancel_bits;
+ if (bits & MDS_INODELOCK_DOM)
+ ll_lock_cancel_bits(lock, MDS_INODELOCK_DOM);
+ }
+ ldlm_lock2handle(lock, &lockh);
+ rc = ldlm_cli_cancel(&lockh, cancel_flags);
+ if (rc < 0) {
+ CDEBUG(D_INODE, "ldlm_cli_cancel: rc = %d\n", rc);
+ RETURN(rc);
+ }
break;
}
+ case LDLM_CB_CANCELING:
+ /* Nothing to do for non-granted locks */
+ if (!ldlm_is_granted(lock))
+ break;
+
+ if (ldlm_is_converting(lock)) {
+ /* this is called on already converted lock, so
+ * ibits has remained bits only and cancel_bits
+ * are bits that were dropped.
+ * Note that DOM lock is handled prior lock convert
+ * and is excluded here.
+ */
+ bits = lock->l_policy_data.l_inodebits.cancel_bits &
+ ~MDS_INODELOCK_DOM;
+ } else {
+ LASSERT(ldlm_is_canceling(lock));
+ }
+ ll_lock_cancel_bits(lock, bits);
+ break;
default:
LBUG();
}
__u32 ll_i2suppgid(struct inode *i)
{
if (in_group_p(i->i_gid))
- return (__u32)i->i_gid;
+ return (__u32)from_kgid(&init_user_ns, i->i_gid);
else
- return (__u32)(-1);
+ return (__u32) __kgid_val(INVALID_GID);
}
/* Pack the required supplementary groups into the supplied groups array.
* array in case it might be useful. Not needed if doing an MDS-side upcall. */
void ll_i2gids(__u32 *suppgids, struct inode *i1, struct inode *i2)
{
-#if 0
- int i;
-#endif
+ LASSERT(i1 != NULL);
+ LASSERT(suppgids != NULL);
- LASSERT(i1 != NULL);
- LASSERT(suppgids != NULL);
-
- suppgids[0] = ll_i2suppgid(i1);
-
- if (i2)
- suppgids[1] = ll_i2suppgid(i2);
- else
- suppgids[1] = -1;
-
-#if 0
- for (i = 0; i < current_ngroups; i++) {
- if (suppgids[0] == -1) {
- if (current_groups[i] != suppgids[1])
- suppgids[0] = current_groups[i];
- continue;
- }
- if (suppgids[1] == -1) {
- if (current_groups[i] != suppgids[0])
- suppgids[1] = current_groups[i];
- continue;
- }
- break;
- }
-#endif
+ suppgids[0] = ll_i2suppgid(i1);
+
+ if (i2)
+ suppgids[1] = ll_i2suppgid(i2);
+ else
+ suppgids[1] = -1;
}
/*
discon_alias = invalid_alias = NULL;
ll_lock_dcache(inode);
- ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry, d_alias) {
+ ll_d_hlist_for_each_entry(alias, p, &inode->i_dentry) {
LASSERT(alias != dentry);
spin_lock(&alias->d_lock);
- if (alias->d_flags & DCACHE_DISCONNECTED)
+ if ((alias->d_flags & DCACHE_DISCONNECTED) &&
+ S_ISDIR(inode->i_mode))
/* LASSERT(last_discon == NULL); LU-405, bz 20055 */
discon_alias = alias;
else if (alias->d_parent == dentry->d_parent &&
iput(inode);
CDEBUG(D_DENTRY,
"Reuse dentry %p inode %p refc %d flags %#x\n",
- new, new->d_inode, d_count(new), new->d_flags);
+ new, new->d_inode, ll_d_count(new), new->d_flags);
return new;
}
}
return ERR_PTR(rc);
d_add(de, inode);
CDEBUG(D_DENTRY, "Add dentry %p inode %p refc %d flags %#x\n",
- de, de->d_inode, d_count(de), de->d_flags);
+ de, de->d_inode, ll_d_count(de), de->d_flags);
return de;
}
-int ll_lookup_it_finish(struct ptlrpc_request *request,
- struct lookup_intent *it, void *data)
+static int ll_lookup_it_finish(struct ptlrpc_request *request,
+ struct lookup_intent *it,
+ struct inode *parent, struct dentry **de,
+ void *secctx, __u32 secctxlen)
{
- struct it_cb_data *icbd = data;
- struct dentry **de = icbd->icbd_childp;
- struct inode *parent = icbd->icbd_parent;
struct inode *inode = NULL;
__u64 bits = 0;
int rc;
+ struct dentry *alias;
ENTRY;
/* NB 1 request reference will be taken away by ll_intent_lock()
* when I return */
CDEBUG(D_DENTRY, "it %p it_disposition %x\n", it,
- it->d.lustre.it_disposition);
+ it->it_disposition);
if (!it_disposition(it, DISP_LOOKUP_NEG)) {
- rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
- if (rc)
- RETURN(rc);
-
- ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
-
- /* We used to query real size from OSTs here, but actually
- this is not needed. For stat() calls size would be updated
- from subsequent do_revalidate()->ll_inode_revalidate_it() in
- 2.4 and
- vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
- Everybody else who needs correct file size would call
- ll_glimpse_size or some equivalent themselves anyway.
- Also see bug 7198. */
+ struct req_capsule *pill = &request->rq_pill;
+ struct mdt_body *body = req_capsule_server_get(pill,
+ &RMF_MDT_BODY);
+
+ rc = ll_prep_inode(&inode, request, (*de)->d_sb, it);
+ if (rc)
+ RETURN(rc);
+
+ if (it->it_op & IT_OPEN)
+ ll_dom_finish_open(inode, request, it);
+
+ ll_set_lock_data(ll_i2sbi(parent)->ll_md_exp, inode, it, &bits);
+
+ /* We used to query real size from OSTs here, but actually
+ * this is not needed. For stat() calls size would be updated
+ * from subsequent do_revalidate()->ll_inode_revalidate_it() in
+ * 2.4 and
+ * vfs_getattr_it->ll_getattr()->ll_inode_revalidate_it() in 2.6
+ * Everybody else who needs correct file size would call
+ * ll_glimpse_size or some equivalent themselves anyway.
+ * Also see bug 7198.
+ */
+
+ /* If security context was returned by MDT, put it in
+ * inode now to save an extra getxattr from security hooks,
+ * and avoid deadlock.
+ */
+ if (body->mbo_valid & OBD_MD_SECCTX) {
+ secctx = req_capsule_server_get(pill, &RMF_FILE_SECCTX);
+ secctxlen = req_capsule_get_size(pill,
+ &RMF_FILE_SECCTX,
+ RCL_SERVER);
+
+ if (secctxlen)
+ CDEBUG(D_SEC, "server returned security context"
+ " for "DFID"\n",
+ PFID(ll_inode2fid(inode)));
+ }
+
+ if (secctx != NULL && secctxlen != 0) {
+ inode_lock(inode);
+ rc = security_inode_notifysecctx(inode, secctx,
+ secctxlen);
+ inode_unlock(inode);
+ if (rc)
+ CWARN("cannot set security context for "
+ DFID": rc = %d\n",
+ PFID(ll_inode2fid(inode)), rc);
+ }
}
/* Only hash *de if it is unhashed (new dentry).
* Atoimc_open may passin hashed dentries for open.
*/
- if (d_unhashed(*de)) {
- struct dentry *alias;
-
- alias = ll_splice_alias(inode, *de);
- if (IS_ERR(alias))
- RETURN(PTR_ERR(alias));
- *de = alias;
- } else if (!it_disposition(it, DISP_LOOKUP_NEG) &&
- !it_disposition(it, DISP_OPEN_CREATE)) {
- /* With DISP_OPEN_CREATE dentry will
- instantiated in ll_create_it. */
- LASSERT((*de)->d_inode == NULL);
- d_instantiate(*de, inode);
- }
+ alias = ll_splice_alias(inode, *de);
+ if (IS_ERR(alias))
+ GOTO(out, rc = PTR_ERR(alias));
+
+ *de = alias;
if (!it_disposition(it, DISP_LOOKUP_NEG)) {
/* we have lookup look - unhide dentry */
if (bits & MDS_INODELOCK_LOOKUP)
d_lustre_revalidate(*de);
} else if (!it_disposition(it, DISP_OPEN_CREATE)) {
- /* If file created on server, don't depend on parent UPDATE
- * lock to unhide it. It is left hidden and next lookup can
- * find it in ll_splice_alias.
+ /*
+ * If file was created on the server, the dentry is revalidated
+ * in ll_create_it if the lock allows for it.
*/
/* Check that parent has UPDATE lock. */
struct lookup_intent parent_it = {
.it_op = IT_GETATTR,
- .d.lustre.it_lock_handle = 0 };
+ .it_lock_handle = 0 };
+ struct lu_fid fid = ll_i2info(parent)->lli_fid;
+
+ /* If it is striped directory, get the real stripe parent */
+ if (unlikely(ll_dir_striped(parent))) {
+ rc = md_get_fid_from_lsm(ll_i2mdexp(parent),
+ ll_i2info(parent)->lli_lsm_md,
+ (*de)->d_name.name,
+ (*de)->d_name.len, &fid);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
- if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it,
- &ll_i2info(parent)->lli_fid, NULL)) {
+ if (md_revalidate_lock(ll_i2mdexp(parent), &parent_it, &fid,
+ NULL)) {
d_lustre_revalidate(*de);
ll_intent_release(&parent_it);
}
- }
+ }
+
+ GOTO(out, rc = 0);
+
+out:
+ if (rc != 0 && it->it_op & IT_OPEN)
+ ll_open_cleanup((*de)->d_sb, request);
- RETURN(0);
+ return rc;
}
+struct pcc_create_attach {
+ struct pcc_dataset *pca_dataset;
+ struct dentry *pca_dentry;
+};
+
static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
- struct lookup_intent *it, int lookup_flags)
+ struct lookup_intent *it,
+ void **secctx, __u32 *secctxlen,
+ struct pcc_create_attach *pca)
{
- struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
- struct dentry *save = dentry, *retval;
- struct ptlrpc_request *req = NULL;
- struct md_op_data *op_data;
- struct it_cb_data icbd;
- __u32 opc;
- int rc;
- ENTRY;
+ struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
+ struct dentry *save = dentry, *retval;
+ struct ptlrpc_request *req = NULL;
+ struct md_op_data *op_data = NULL;
+ struct lov_user_md *lum = NULL;
+ __u32 opc;
+ int rc;
+ char secctx_name[XATTR_NAME_MAX + 1];
+
+ ENTRY;
if (dentry->d_name.len > ll_i2sbi(parent)->ll_namelen)
RETURN(ERR_PTR(-ENAMETOOLONG));
if (d_mountpoint(dentry))
CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
- ll_frob_intent(&it, &lookup_it);
+ if (it == NULL || it->it_op == IT_GETXATTR)
+ it = &lookup_it;
- if (it->it_op == IT_GETATTR) {
- rc = ll_statahead_enter(parent, &dentry, 0);
- if (rc == 1) {
- if (dentry == save)
- GOTO(out, retval = NULL);
- GOTO(out, retval = dentry);
- }
- }
+ if (it->it_op == IT_GETATTR && dentry_may_statahead(parent, dentry)) {
+ rc = ll_statahead(parent, &dentry, 0);
+ if (rc == 1)
+ RETURN(dentry == save ? NULL : dentry);
+ }
- icbd.icbd_childp = &dentry;
- icbd.icbd_parent = parent;
+ if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
+ dentry->d_sb->s_flags & SB_RDONLY)
+ RETURN(ERR_PTR(-EROFS));
if (it->it_op & IT_CREAT)
opc = LUSTRE_OPC_CREATE;
else
opc = LUSTRE_OPC_ANY;
- op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
- dentry->d_name.len, lookup_flags, opc,
- NULL);
- if (IS_ERR(op_data))
- RETURN((void *)op_data);
+ op_data = ll_prep_md_op_data(NULL, parent, NULL, dentry->d_name.name,
+ dentry->d_name.len, 0, opc, NULL);
+ if (IS_ERR(op_data))
+ GOTO(out, retval = ERR_CAST(op_data));
- /* enforce umask if acl disabled or MDS doesn't support umask */
- if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
+ /* enforce umask if acl disabled or MDS doesn't support umask */
+ if (!IS_POSIXACL(parent) || !exp_connect_umask(ll_i2mdexp(parent)))
it->it_create_mode &= ~current_umask();
- rc = md_intent_lock(ll_i2mdexp(parent), op_data, NULL, 0, it,
- lookup_flags, &req, ll_md_blocking_ast, 0);
- ll_finish_md_op_data(op_data);
- if (rc < 0)
- GOTO(out, retval = ERR_PTR(rc));
+ if (it->it_op & IT_CREAT &&
+ ll_i2sbi(parent)->ll_flags & LL_SBI_FILE_SECCTX) {
+ rc = ll_dentry_init_security(dentry, it->it_create_mode,
+ &dentry->d_name,
+ &op_data->op_file_secctx_name,
+ &op_data->op_file_secctx,
+ &op_data->op_file_secctx_size);
+ if (rc < 0)
+ GOTO(out, retval = ERR_PTR(rc));
+ if (secctx != NULL)
+ *secctx = op_data->op_file_secctx;
+ if (secctxlen != NULL)
+ *secctxlen = op_data->op_file_secctx_size;
+ } else {
+ if (secctx != NULL)
+ *secctx = NULL;
+ if (secctxlen != NULL)
+ *secctxlen = 0;
+ }
+
+ /* ask for security context upon intent */
+ if (it->it_op & (IT_LOOKUP | IT_GETATTR | IT_OPEN)) {
+ /* get name of security xattr to request to server */
+ rc = ll_listsecurity(parent, secctx_name,
+ sizeof(secctx_name));
+ if (rc < 0) {
+ CDEBUG(D_SEC, "cannot get security xattr name for "
+ DFID": rc = %d\n",
+ PFID(ll_inode2fid(parent)), rc);
+ } else if (rc > 0) {
+ op_data->op_file_secctx_name = secctx_name;
+ op_data->op_file_secctx_name_size = rc;
+ CDEBUG(D_SEC, "'%.*s' is security xattr for "DFID"\n",
+ rc, secctx_name, PFID(ll_inode2fid(parent)));
+ }
+ }
+
+ if (pca && pca->pca_dataset) {
+ struct pcc_dataset *dataset = pca->pca_dataset;
+
+ OBD_ALLOC_PTR(lum);
+ if (lum == NULL)
+ GOTO(out, retval = ERR_PTR(-ENOMEM));
- rc = ll_lookup_it_finish(req, it, &icbd);
+ lum->lmm_magic = LOV_USER_MAGIC_V1;
+ lum->lmm_pattern = LOV_PATTERN_F_RELEASED | LOV_PATTERN_RAID0;
+ op_data->op_data = lum;
+ op_data->op_data_size = sizeof(*lum);
+ op_data->op_archive_id = dataset->pccd_rwid;
+
+ rc = obd_fid_alloc(NULL, ll_i2mdexp(parent), &op_data->op_fid2,
+ op_data);
+ if (rc)
+ GOTO(out, retval = ERR_PTR(rc));
+
+ rc = pcc_inode_create(parent->i_sb, dataset, &op_data->op_fid2,
+ &pca->pca_dentry);
+ if (rc)
+ GOTO(out, retval = ERR_PTR(rc));
+
+ it->it_flags |= MDS_OPEN_PCC;
+ }
+
+ rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
+ &ll_md_blocking_ast, 0);
+ /* If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the
+ * client does not know which suppgid should be sent to the MDS, or
+ * some other(s) changed the target file's GID after this RPC sent
+ * to the MDS with the suppgid as the original GID, then we should
+ * try again with right suppgid. */
+ if (rc == -EACCES && it->it_op & IT_OPEN &&
+ it_disposition(it, DISP_OPEN_DENY)) {
+ struct mdt_body *body;
+
+ LASSERT(req != NULL);
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
+ if (op_data->op_suppgids[0] == body->mbo_gid ||
+ op_data->op_suppgids[1] == body->mbo_gid ||
+ !in_group_p(make_kgid(&init_user_ns, body->mbo_gid)))
+ GOTO(out, retval = ERR_PTR(-EACCES));
+
+ fid_zero(&op_data->op_fid2);
+ op_data->op_suppgids[1] = body->mbo_gid;
+ ptlrpc_req_finished(req);
+ req = NULL;
+ ll_intent_release(it);
+ rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req,
+ &ll_md_blocking_ast, 0);
+ }
+
+ if (rc < 0)
+ GOTO(out, retval = ERR_PTR(rc));
+
+ /* dir layout may change */
+ ll_unlock_md_op_lsm(op_data);
+ rc = ll_lookup_it_finish(req, it, parent, &dentry,
+ secctx != NULL ? *secctx : NULL,
+ secctxlen != NULL ? *secctxlen : 0);
if (rc != 0) {
ll_intent_release(it);
GOTO(out, retval = ERR_PTR(rc));
}
ll_lookup_finish_locks(it, dentry);
- if (dentry == save)
- GOTO(out, retval = NULL);
- else
- GOTO(out, retval = dentry);
- out:
- if (req)
- ptlrpc_req_finished(req);
- if (it->it_op == IT_GETATTR && (retval == NULL || retval == dentry))
- ll_statahead_mark(parent, dentry);
- return retval;
+ GOTO(out, retval = (dentry == save) ? NULL : dentry);
+
+out:
+ if (op_data != NULL && !IS_ERR(op_data)) {
+ if (secctx != NULL && secctxlen != NULL) {
+ /* caller needs sec ctx info, so reset it in op_data to
+ * prevent it from being freed */
+ op_data->op_file_secctx = NULL;
+ op_data->op_file_secctx_size = 0;
+ }
+ ll_finish_md_op_data(op_data);
+ }
+
+ if (lum != NULL)
+ OBD_FREE_PTR(lum);
+
+ ptlrpc_req_finished(req);
+ return retval;
}
#ifdef HAVE_IOP_ATOMIC_OPEN
dentry->d_name.len, dentry->d_name.name,
PFID(ll_inode2fid(parent)), parent, flags);
- /* Optimize away (CREATE && !OPEN). Let .create handle the race. */
- if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN))
+ /*
+ * Optimize away (CREATE && !OPEN). Let .create handle the race.
+ * but only if we have write permissions there, otherwise we need
+ * to proceed with lookup. LU-4185
+ */
+ if ((flags & LOOKUP_CREATE) && !(flags & LOOKUP_OPEN) &&
+ (inode_permission(parent, MAY_WRITE | MAY_EXEC) == 0))
return NULL;
if (flags & (LOOKUP_PARENT|LOOKUP_OPEN|LOOKUP_CREATE))
itp = NULL;
else
itp = ⁢
- de = ll_lookup_it(parent, dentry, itp, 0);
+ de = ll_lookup_it(parent, dentry, itp, NULL, NULL, NULL);
if (itp != NULL)
ll_intent_release(itp);
return de;
}
+#ifdef FMODE_CREATED /* added in Linux v4.18-rc1-20-g73a09dd */
+# define ll_is_opened(o, f) ((f)->f_mode & FMODE_OPENED)
+# define ll_finish_open(f, d, o) finish_open((f), (d), NULL)
+# define ll_last_arg
+# define ll_set_created(o, f) \
+do { \
+ (f)->f_mode |= FMODE_CREATED; \
+} while (0)
+
+#else
+# define ll_is_opened(o, f) (*(o))
+# define ll_finish_open(f, d, o) finish_open((f), (d), NULL, (o))
+# define ll_last_arg , int *opened
+# define ll_set_created(o, f) \
+do { \
+ *(o) |= FILE_CREATED; \
+} while (0)
+
+#endif
+
/*
* For cached negative dentry and new dentry, handle lookup/create/open
* together.
*/
static int ll_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned open_flags,
- umode_t mode, int *opened)
+ umode_t mode ll_last_arg)
{
struct lookup_intent *it;
struct dentry *de;
long long lookup_flags = LOOKUP_OPEN;
+ void *secctx = NULL;
+ __u32 secctxlen = 0;
+ struct ll_sb_info *sbi;
+ struct pcc_create_attach pca = {NULL, NULL};
+ struct pcc_dataset *dataset = NULL;
int rc = 0;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), file %p,"
"open_flags %x, mode %x opened %d\n",
dentry->d_name.len, dentry->d_name.name,
- PFID(ll_inode2fid(dir)), dir, file, open_flags, mode, *opened);
+ PFID(ll_inode2fid(dir)), dir, file, open_flags, mode,
+ ll_is_opened(opened, file));
+
+ /* Only negative dentries enter here */
+ LASSERT(dentry->d_inode == NULL);
+
+ if (!d_unhashed(dentry)) {
+ /* A valid negative dentry that just passed revalidation,
+ * there's little point to try and open it server-side,
+ * even though there's a minuscule chance it might succeed.
+ * Either way it's a valid race to just return -ENOENT here.
+ */
+ if (!(open_flags & O_CREAT))
+ return -ENOENT;
+
+ /* Otherwise we just unhash it to be rehashed afresh via
+ * lookup if necessary
+ */
+ d_drop(dentry);
+ }
OBD_ALLOC(it, sizeof(*it));
if (!it)
if (open_flags & O_CREAT) {
it->it_op |= IT_CREAT;
lookup_flags |= LOOKUP_CREATE;
+ sbi = ll_i2sbi(dir);
+ /* Volatile file is used for HSM restore, so do not use PCC */
+ if (!filename_is_volatile(dentry->d_name.name,
+ dentry->d_name.len, NULL)) {
+ struct pcc_matcher item;
+
+ item.pm_uid = from_kuid(&init_user_ns, current_uid());
+ item.pm_gid = from_kgid(&init_user_ns, current_gid());
+ item.pm_projid = ll_i2info(dir)->lli_projid;
+ item.pm_name = &dentry->d_name;
+ dataset = pcc_dataset_match_get(&sbi->ll_pcc_super,
+ &item);
+ pca.pca_dataset = dataset;
+ }
}
it->it_create_mode = (mode & S_IALLUGO) | S_IFREG;
it->it_flags = (open_flags & ~O_ACCMODE) | OPEN_FMODE(open_flags);
+ it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
/* Dentry added to dcache tree in ll_lookup_it */
- de = ll_lookup_it(dir, dentry, it, lookup_flags);
+ de = ll_lookup_it(dir, dentry, it, &secctx, &secctxlen, &pca);
if (IS_ERR(de))
rc = PTR_ERR(de);
else if (de != NULL)
dentry = de;
+ CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
+
if (!rc) {
if (it_disposition(it, DISP_OPEN_CREATE)) {
/* Dentry instantiated in ll_create_it. */
- rc = ll_create_it(dir, dentry, mode, it);
+ rc = ll_create_it(dir, dentry, it, secctx, secctxlen);
+ security_release_secctx(secctx, secctxlen);
if (rc) {
/* We dget in ll_splice_alias. */
if (de != NULL)
dput(de);
goto out_release;
}
-
- *opened |= FILE_CREATED;
+ if (dataset != NULL && dentry->d_inode) {
+ rc = pcc_inode_create_fini(dataset,
+ dentry->d_inode,
+ pca.pca_dentry);
+ if (rc) {
+ if (de != NULL)
+ dput(de);
+ GOTO(out_release, rc);
+ }
+ }
+ ll_set_created(opened, file);
}
+
if (dentry->d_inode && it_disposition(it, DISP_OPEN_OPEN)) {
/* Open dentry. */
if (S_ISFIFO(dentry->d_inode->i_mode)) {
- /* We cannot call open here as it would
- * deadlock.
- */
- if (it_disposition(it, DISP_ENQ_OPEN_REF))
- ptlrpc_req_finished(
- (struct ptlrpc_request *)
- it->d.lustre.it_data);
+ /* We cannot call open here as it might
+ * deadlock. This case is unreachable in
+ * practice because of OBD_CONNECT_NODEVOH. */
rc = finish_no_open(file, de);
} else {
file->private_data = it;
- rc = finish_open(file, dentry, NULL, opened);
+ rc = ll_finish_open(file, dentry, opened);
/* We dget in ll_splice_alias. finish_open takes
* care of dget for fd open.
*/
}
out_release:
+ if (dataset != NULL)
+ pcc_dataset_put(dataset);
ll_intent_release(it);
OBD_FREE(it, sizeof(*it));
}
#else /* !HAVE_IOP_ATOMIC_OPEN */
-struct lookup_intent *ll_convert_intent(struct open_intent *oit,
- int lookup_flags)
+static struct lookup_intent *
+ll_convert_intent(struct open_intent *oit, int lookup_flags, bool is_readonly)
{
struct lookup_intent *it;
- OBD_ALLOC(it, sizeof(*it));
+ OBD_ALLOC_PTR(it);
if (!it)
return ERR_PTR(-ENOMEM);
if (lookup_flags & LOOKUP_OPEN) {
it->it_op = IT_OPEN;
- if (lookup_flags & LOOKUP_CREATE)
+ /* Avoid file creation for ro bind mount point(is_readonly) */
+ if ((lookup_flags & LOOKUP_CREATE) && !is_readonly)
it->it_op |= IT_CREAT;
it->it_create_mode = (oit->create_mode & S_IALLUGO) | S_IFREG;
- it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags);
+ it->it_flags = ll_namei_to_lookup_intent_flag(oit->flags &
+ ~(is_readonly ? O_CREAT : 0));
+ it->it_flags &= ~MDS_OPEN_FL_INTERNAL;
} else {
it->it_op = IT_GETATTR;
}
static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
struct nameidata *nd)
{
- struct dentry *de;
- ENTRY;
+ struct dentry *de;
+ ENTRY;
- if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
- struct lookup_intent *it;
+ if (nd && !(nd->flags & (LOOKUP_CONTINUE|LOOKUP_PARENT))) {
+ struct lookup_intent *it;
- if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
- it = ll_d2d(dentry)->lld_it;
- ll_d2d(dentry)->lld_it = NULL;
- } else {
+ if (ll_d2d(dentry) && ll_d2d(dentry)->lld_it) {
+ it = ll_d2d(dentry)->lld_it;
+ ll_d2d(dentry)->lld_it = NULL;
+ } else {
+ /*
+ * Optimize away (CREATE && !OPEN). Let .create handle
+ * the race. But only if we have write permissions
+ * there, otherwise we need to proceed with lookup.
+ * LU-4185
+ */
if ((nd->flags & LOOKUP_CREATE) &&
- !(nd->flags & LOOKUP_OPEN))
- RETURN(NULL);
-
- it = ll_convert_intent(&nd->intent.open, nd->flags);
- if (IS_ERR(it))
- RETURN((struct dentry *)it);
- }
-
- de = ll_lookup_it(parent, dentry, it, nd->flags);
- if (de)
- dentry = de;
- if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
- if (dentry->d_inode &&
- it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
- if (S_ISFIFO(dentry->d_inode->i_mode)) {
- // We cannot call open here as it would
- // deadlock.
- ptlrpc_req_finished(
- (struct ptlrpc_request *)
- it->d.lustre.it_data);
- } else {
+ !(nd->flags & LOOKUP_OPEN) &&
+ (inode_permission(parent,
+ MAY_WRITE | MAY_EXEC) == 0))
+ RETURN(NULL);
+
+ it = ll_convert_intent(&nd->intent.open, nd->flags,
+ (nd->path.mnt->mnt_flags & MNT_READONLY) ||
+ (nd->path.mnt->mnt_sb->s_flags & SB_RDONLY));
+ if (IS_ERR(it))
+ RETURN((struct dentry *)it);
+ }
+
+ de = ll_lookup_it(parent, dentry, it, NULL, NULL, NULL);
+ if (de)
+ dentry = de;
+ if ((nd->flags & LOOKUP_OPEN) && !IS_ERR(dentry)) { /* Open */
+ if (dentry->d_inode &&
+ it_disposition(it, DISP_OPEN_OPEN)) { /* nocreate */
+ if (S_ISFIFO(dentry->d_inode->i_mode)) {
+ /* We cannot call open here as it might
+ * deadlock. This case is unreachable in
+ * practice because of
+ * OBD_CONNECT_NODEVOH. */
+ } else {
struct file *filp;
nd->intent.open.file->private_data = it;
dput(de);
de = (struct dentry *)filp;
}
- }
- } else if (it_disposition(it, DISP_OPEN_CREATE)) {
- // XXX This can only reliably work on assumption
- // that there are NO hashed negative dentries.
- ll_d2d(dentry)->lld_it = it;
- it = NULL; /* Will be freed in ll_create_nd */
- /* We absolutely depend on ll_create_nd to be
- * called to not leak this intent and possible
- * data attached to it */
- }
- }
-
- if (it) {
- ll_intent_release(it);
- OBD_FREE(it, sizeof(*it));
- }
- } else {
- de = ll_lookup_it(parent, dentry, NULL, 0);
- }
+ }
+ } else if (it_disposition(it, DISP_OPEN_CREATE)) {
+ /* XXX This can only reliably work on assumption
+ * that there are NO hashed negative dentries.*/
+ ll_d2d(dentry)->lld_it = it;
+ it = NULL; /* Will be freed in ll_create_nd */
+ /* We absolutely depend on ll_create_nd to be
+ * called to not leak this intent and possible
+ * data attached to it */
+ }
+ }
+
+ if (it) {
+ ll_intent_release(it);
+ OBD_FREE(it, sizeof(*it));
+ }
+ } else {
+ de = ll_lookup_it(parent, dentry, NULL, NULL, NULL, NULL);
+ }
- RETURN(de);
+ RETURN(de);
}
#endif /* HAVE_IOP_ATOMIC_OPEN */
/* We depend on "mode" being set with the proper file type/umask by now */
-static struct inode *ll_create_node(struct inode *dir, const char *name,
- int namelen, const void *data, int datalen,
- int mode, __u64 extra,
- struct lookup_intent *it)
+static struct inode *ll_create_node(struct inode *dir, struct lookup_intent *it)
{
struct inode *inode = NULL;
struct ptlrpc_request *request = NULL;
int rc;
ENTRY;
- LASSERT(it && it->d.lustre.it_disposition);
+ LASSERT(it && it->it_disposition);
- LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
- request = it->d.lustre.it_data;
+ LASSERT(it_disposition(it, DISP_ENQ_CREATE_REF));
+ request = it->it_request;
it_clear_disposition(it, DISP_ENQ_CREATE_REF);
rc = ll_prep_inode(&inode, request, dir->i_sb, it);
if (rc)
GOTO(out, inode = ERR_PTR(rc));
- LASSERT(ll_d_hlist_empty(&inode->i_dentry));
+ /* Pause to allow for a race with concurrent access by fid */
+ OBD_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_NODE_PAUSE, cfs_fail_val);
/* We asked for a lock on the directory, but were granted a
* lock on the inode. Since we finally have an inode pointer,
* If the create succeeds, we fill in the inode information
* with d_instantiate().
*/
-static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
- struct lookup_intent *it)
+static int ll_create_it(struct inode *dir, struct dentry *dentry,
+ struct lookup_intent *it,
+ void *secctx, __u32 secctxlen)
{
struct inode *inode;
+ __u64 bits = 0;
int rc = 0;
ENTRY;
if (rc)
RETURN(rc);
- inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
- NULL, 0, mode, 0, it);
+ inode = ll_create_node(dir, it);
if (IS_ERR(inode))
RETURN(PTR_ERR(inode));
- if (filename_is_volatile(dentry->d_name.name, dentry->d_name.len, NULL))
- ll_i2info(inode)->lli_volatile = true;
+ if ((ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX) &&
+ secctx != NULL) {
+ inode_lock(inode);
+ /* must be done before d_instantiate, because it calls
+ * security_d_instantiate, which means a getxattr if security
+ * context is not set yet */
+ rc = security_inode_notifysecctx(inode, secctx, secctxlen);
+ inode_unlock(inode);
+ if (rc)
+ RETURN(rc);
+ }
d_instantiate(dentry, inode);
+
+ if (!(ll_i2sbi(inode)->ll_flags & LL_SBI_FILE_SECCTX)) {
+ rc = ll_inode_init_security(dentry, inode, dir);
+ if (rc)
+ RETURN(rc);
+ }
+
+ ll_set_lock_data(ll_i2sbi(dir)->ll_md_exp, inode, it, &bits);
+ if (bits & MDS_INODELOCK_LOOKUP)
+ d_lustre_revalidate(dentry);
+
RETURN(0);
}
-static void ll_update_times(struct ptlrpc_request *request,
- struct inode *inode)
+void ll_update_times(struct ptlrpc_request *request, struct inode *inode)
{
- struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
- &RMF_MDT_BODY);
-
- LASSERT(body);
- if (body->valid & OBD_MD_FLMTIME &&
- body->mtime > LTIME_S(inode->i_mtime)) {
- CDEBUG(D_INODE, "setting fid "DFID" mtime from %lu to "LPU64
- "\n", PFID(ll_inode2fid(inode)),
- LTIME_S(inode->i_mtime), body->mtime);
- LTIME_S(inode->i_mtime) = body->mtime;
- }
- if (body->valid & OBD_MD_FLCTIME &&
- body->ctime > LTIME_S(inode->i_ctime))
- LTIME_S(inode->i_ctime) = body->ctime;
+ struct mdt_body *body = req_capsule_server_get(&request->rq_pill,
+ &RMF_MDT_BODY);
+
+ LASSERT(body);
+ if (body->mbo_valid & OBD_MD_FLMTIME &&
+ body->mbo_mtime > inode->i_mtime.tv_sec) {
+ CDEBUG(D_INODE,
+ "setting fid " DFID " mtime from %lld to %llu\n",
+ PFID(ll_inode2fid(inode)),
+ (s64)inode->i_mtime.tv_sec, body->mbo_mtime);
+ inode->i_mtime.tv_sec = body->mbo_mtime;
+ }
+
+ if (body->mbo_valid & OBD_MD_FLCTIME &&
+ body->mbo_ctime > inode->i_ctime.tv_sec)
+ inode->i_ctime.tv_sec = body->mbo_ctime;
}
-static int ll_new_node(struct inode *dir, struct qstr *name,
- const char *tgt, int mode, int rdev,
- struct dentry *dchild, __u32 opc)
+static int ll_new_node(struct inode *dir, struct dentry *dchild,
+ const char *tgt, umode_t mode, int rdev, __u32 opc)
{
+ struct qstr *name = &dchild->d_name;
struct ptlrpc_request *request = NULL;
struct md_op_data *op_data;
struct inode *inode = NULL;
if (unlikely(tgt != NULL))
tgt_len = strlen(tgt) + 1;
- op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
- name->len, 0, opc, NULL);
- if (IS_ERR(op_data))
- GOTO(err_exit, err = PTR_ERR(op_data));
+again:
+ op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
+ name->len, 0, opc, NULL);
+ if (IS_ERR(op_data))
+ GOTO(err_exit, err = PTR_ERR(op_data));
+
+ if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
+ err = ll_dentry_init_security(dchild, mode, &dchild->d_name,
+ &op_data->op_file_secctx_name,
+ &op_data->op_file_secctx,
+ &op_data->op_file_secctx_size);
+ if (err < 0)
+ GOTO(err_exit, err);
+ }
err = md_create(sbi->ll_md_exp, op_data, tgt, tgt_len, mode,
- current_fsuid(), current_fsgid(),
+ from_kuid(&init_user_ns, current_fsuid()),
+ from_kgid(&init_user_ns, current_fsgid()),
cfs_curproc_cap_pack(), rdev, &request);
- ll_finish_md_op_data(op_data);
- if (err)
- GOTO(err_exit, err);
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 58, 0)
+ /*
+ * server < 2.12.58 doesn't pack default LMV in intent_getattr reply,
+ * fetch default LMV here.
+ */
+ if (unlikely(err == -EREMOTE)) {
+ struct ll_inode_info *lli = ll_i2info(dir);
+ struct lmv_user_md *lum;
+ int lumsize;
+ int err2;
+
+ ptlrpc_req_finished(request);
+ request = NULL;
+
+ err2 = ll_dir_getstripe(dir, (void **)&lum, &lumsize, &request,
+ OBD_MD_DEFAULT_MEA);
+ ll_finish_md_op_data(op_data);
+ op_data = NULL;
+ if (err2 == 0) {
+ struct lustre_md md = { NULL };
+
+ md.body = req_capsule_server_get(&request->rq_pill,
+ &RMF_MDT_BODY);
+ if (!md.body)
+ GOTO(err_exit, err = -EPROTO);
+
+ OBD_ALLOC_PTR(md.default_lmv);
+ if (!md.default_lmv)
+ GOTO(err_exit, err = -ENOMEM);
+
+ md.default_lmv->lsm_md_magic = lum->lum_magic;
+ md.default_lmv->lsm_md_stripe_count =
+ lum->lum_stripe_count;
+ md.default_lmv->lsm_md_master_mdt_index =
+ lum->lum_stripe_offset;
+ md.default_lmv->lsm_md_hash_type = lum->lum_hash_type;
+
+ err = ll_update_inode(dir, &md);
+ md_free_lustre_md(sbi->ll_md_exp, &md);
+ if (err)
+ GOTO(err_exit, err);
+ } else if (err2 == -ENODATA && lli->lli_default_lsm_md) {
+ /*
+ * If there are no default stripe EA on the MDT, but the
+ * client has default stripe, then it probably means
+ * default stripe EA has just been deleted.
+ */
+ down_write(&lli->lli_lsm_sem);
+ if (lli->lli_default_lsm_md)
+ OBD_FREE_PTR(lli->lli_default_lsm_md);
+ lli->lli_default_lsm_md = NULL;
+ up_write(&lli->lli_lsm_sem);
+ } else {
+ GOTO(err_exit, err);
+ }
- ll_update_times(request, dir);
+ ptlrpc_req_finished(request);
+ request = NULL;
+ goto again;
+ }
+#endif
- if (dchild) {
- err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
- if (err)
- GOTO(err_exit, err);
+ if (err < 0)
+ GOTO(err_exit, err);
- d_instantiate(dchild, inode);
- }
- EXIT;
+ ll_update_times(request, dir);
+
+ CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_NEWNODE_PAUSE, cfs_fail_val);
+
+ err = ll_prep_inode(&inode, request, dchild->d_sb, NULL);
+ if (err)
+ GOTO(err_exit, err);
+
+ if (sbi->ll_flags & LL_SBI_FILE_SECCTX) {
+ inode_lock(inode);
+ /* must be done before d_instantiate, because it calls
+ * security_d_instantiate, which means a getxattr if security
+ * context is not set yet */
+ err = security_inode_notifysecctx(inode,
+ op_data->op_file_secctx,
+ op_data->op_file_secctx_size);
+ inode_unlock(inode);
+ if (err)
+ GOTO(err_exit, err);
+ }
+
+ d_instantiate(dchild, inode);
+
+ if (!(sbi->ll_flags & LL_SBI_FILE_SECCTX)) {
+ err = ll_inode_init_security(dchild, inode, dir);
+ if (err)
+ GOTO(err_exit, err);
+ }
+
+ EXIT;
err_exit:
- ptlrpc_req_finished(request);
+ if (request != NULL)
+ ptlrpc_req_finished(request);
- return err;
+ if (!IS_ERR_OR_NULL(op_data))
+ ll_finish_md_op_data(op_data);
+
+ return err;
}
-static int ll_mknod_generic(struct inode *dir, struct qstr *name, int mode,
- unsigned rdev, struct dentry *dchild)
+static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
+ dev_t rdev)
{
- int err;
+ struct qstr *name = &dchild->d_name;
+ int err;
ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p) mode %o dev %x\n",
case S_IFBLK:
case S_IFIFO:
case S_IFSOCK:
- err = ll_new_node(dir, name, NULL, mode, rdev, dchild,
- LUSTRE_OPC_MKNOD);
+ err = ll_new_node(dir, dchild, NULL, mode, old_encode_dev(rdev),
+ LUSTRE_OPC_MKNOD);
break;
case S_IFDIR:
err = -EPERM;
{
int rc;
+ CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
+
CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), "
"flags=%u, excl=%d\n", dentry->d_name.len,
dentry->d_name.name, PFID(ll_inode2fid(dir)),
dir, mode, want_excl);
- rc = ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
+ /* Using mknod(2) to create a regular file is designed to not recognize
+ * volatile file name, so we use ll_mknod() here. */
+ rc = ll_mknod(dir, dentry, mode, 0);
ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_CREATE, 1);
{
struct ll_dentry_data *lld = ll_d2d(dentry);
struct lookup_intent *it = NULL;
- int rc;
+ int rc;
+
+ CFS_FAIL_TIMEOUT(OBD_FAIL_LLITE_CREATE_FILE_PAUSE, cfs_fail_val);
if (lld != NULL)
it = lld->lld_it;
- if (!it)
- return ll_mknod_generic(dir, &dentry->d_name, mode, 0, dentry);
+ if (!it) {
+ /* LU-8559: use LUSTRE_OPC_CREATE for non atomic open case
+ * so that volatile file name is recoginized.
+ * Mknod(2), however, is designed to not recognize volatile
+ * file name to avoid inode leak under orphan directory until
+ * MDT reboot */
+ return ll_new_node(dir, dentry, NULL, mode, 0,
+ LUSTRE_OPC_CREATE);
+ }
lld->lld_it = NULL;
- /* Was there an error? Propagate it! */
- if (it->d.lustre.it_status) {
- rc = it->d.lustre.it_status;
- goto out;
- }
+ /* Was there an error? Propagate it! */
+ if (it->it_status) {
+ rc = it->it_status;
+ goto out;
+ }
- rc = ll_create_it(dir, dentry, mode, it);
- if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
+ rc = ll_create_it(dir, dentry, it, NULL, 0);
+ if (nd && (nd->flags & LOOKUP_OPEN) && dentry->d_inode) { /* Open */
struct file *filp;
nd->intent.open.file->private_data = it;
}
#endif /* HAVE_IOP_ATOMIC_OPEN */
-static int ll_symlink_generic(struct inode *dir, struct qstr *name,
- const char *tgt, struct dentry *dchild)
+static int ll_symlink(struct inode *dir, struct dentry *dchild,
+ const char *oldpath)
{
- int err;
- ENTRY;
+ struct qstr *name = &dchild->d_name;
+ int err;
+ ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p), target=%.*s\n",
name->len, name->name, PFID(ll_inode2fid(dir)),
- dir, 3000, tgt);
+ dir, 3000, oldpath);
- err = ll_new_node(dir, name, (char *)tgt, S_IFLNK | S_IRWXUGO,
- 0, dchild, LUSTRE_OPC_SYMLINK);
+ err = ll_new_node(dir, dchild, oldpath, S_IFLNK | S_IRWXUGO, 0,
+ LUSTRE_OPC_SYMLINK);
if (!err)
ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_SYMLINK, 1);
RETURN(err);
}
-static int ll_link_generic(struct inode *src, struct inode *dir,
- struct qstr *name, struct dentry *dchild)
+static int ll_link(struct dentry *old_dentry, struct inode *dir,
+ struct dentry *new_dentry)
{
- struct ll_sb_info *sbi = ll_i2sbi(dir);
- struct ptlrpc_request *request = NULL;
- struct md_op_data *op_data;
- int err;
+ struct inode *src = old_dentry->d_inode;
+ struct qstr *name = &new_dentry->d_name;
+ struct ll_sb_info *sbi = ll_i2sbi(dir);
+ struct ptlrpc_request *request = NULL;
+ struct md_op_data *op_data;
+ int err;
- ENTRY;
- CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID
- "(%p), target=%.*s\n", PFID(ll_inode2fid(src)), src,
+ ENTRY;
+ CDEBUG(D_VFSTRACE, "VFS Op: inode="DFID"(%p), dir="DFID"(%p), "
+ "target=%.*s\n", PFID(ll_inode2fid(src)), src,
PFID(ll_inode2fid(dir)), dir, name->len, name->name);
op_data = ll_prep_md_op_data(NULL, src, dir, name->name, name->len,
RETURN(err);
}
-static int ll_mkdir_generic(struct inode *dir, struct qstr *name,
- int mode, struct dentry *dchild)
-
+static int ll_mkdir(struct inode *dir, struct dentry *dchild, ll_umode_t mode)
{
+ struct qstr *name = &dchild->d_name;
int err;
ENTRY;
if (!IS_POSIXACL(dir) || !exp_connect_umask(ll_i2mdexp(dir)))
mode &= ~current_umask();
+
mode = (mode & (S_IRWXUGO|S_ISVTX)) | S_IFDIR;
- err = ll_new_node(dir, name, NULL, mode, 0, dchild, LUSTRE_OPC_MKDIR);
- if (!err)
- ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
+ err = ll_new_node(dir, dchild, NULL, mode, 0, LUSTRE_OPC_MKDIR);
+ if (err == 0)
+ ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_MKDIR, 1);
- RETURN(err);
+ RETURN(err);
}
-static int ll_rmdir_generic(struct inode *dir, struct dentry *dparent,
- struct dentry *dchild, struct qstr *name)
+static int ll_rmdir(struct inode *dir, struct dentry *dchild)
{
+ struct qstr *name = &dchild->d_name;
struct ptlrpc_request *request = NULL;
struct md_op_data *op_data;
int rc;
CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
name->len, name->name, PFID(ll_inode2fid(dir)), dir);
- if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
+ if (unlikely(d_mountpoint(dchild)))
RETURN(-EBUSY);
op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len,
if (IS_ERR(op_data))
RETURN(PTR_ERR(op_data));
- if (dchild != NULL && dchild->d_inode != NULL)
+ if (dchild->d_inode != NULL)
op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
+
op_data->op_fid2 = op_data->op_fid3;
rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
ll_finish_md_op_data(op_data);
RETURN(rc);
}
-int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
+static int ll_unlink(struct inode *dir, struct dentry *dchild)
{
- struct mdt_body *body;
- struct lov_mds_md *eadata;
- struct lov_stripe_md *lsm = NULL;
- struct obd_trans_info oti = { 0 };
- struct obdo *oa;
- struct obd_capa *oc = NULL;
- int rc;
- ENTRY;
-
- /* req is swabbed so this is safe */
- body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
- if (!(body->valid & OBD_MD_FLEASIZE))
- RETURN(0);
-
- if (body->eadatasize == 0) {
- CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
- GOTO(out, rc = -EPROTO);
- }
-
- /* The MDS sent back the EA because we unlinked the last reference
- * to this file. Use this EA to unlink the objects on the OST.
- * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
- * check it is complete and sensible. */
- eadata = req_capsule_server_sized_get(&request->rq_pill, &RMF_MDT_MD,
- body->eadatasize);
- LASSERT(eadata != NULL);
-
- rc = obd_unpackmd(ll_i2dtexp(dir), &lsm, eadata, body->eadatasize);
- if (rc < 0) {
- CERROR("obd_unpackmd: %d\n", rc);
- GOTO(out, rc);
- }
- LASSERT(rc >= sizeof(*lsm));
-
- OBDO_ALLOC(oa);
- if (oa == NULL)
- GOTO(out_free_memmd, rc = -ENOMEM);
-
- oa->o_oi = lsm->lsm_oi;
- oa->o_mode = body->mode & S_IFMT;
- oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLGROUP;
-
- if (body->valid & OBD_MD_FLCOOKIE) {
- oa->o_valid |= OBD_MD_FLCOOKIE;
- oti.oti_logcookies =
- req_capsule_server_sized_get(&request->rq_pill,
- &RMF_LOGCOOKIES,
- sizeof(struct llog_cookie) *
- lsm->lsm_stripe_count);
- if (oti.oti_logcookies == NULL) {
- oa->o_valid &= ~OBD_MD_FLCOOKIE;
- body->valid &= ~OBD_MD_FLCOOKIE;
- }
- }
-
- if (body->valid & OBD_MD_FLOSSCAPA) {
- rc = md_unpack_capa(ll_i2mdexp(dir), request, &RMF_CAPA2, &oc);
- if (rc)
- GOTO(out_free_memmd, rc);
- }
-
- rc = obd_destroy(NULL, ll_i2dtexp(dir), oa, lsm, &oti,
- ll_i2mdexp(dir), oc);
- capa_put(oc);
- if (rc)
- CERROR("obd destroy objid "DOSTID" error %d\n",
- POSTID(&lsm->lsm_oi), rc);
-out_free_memmd:
- obd_free_memmd(ll_i2dtexp(dir), &lsm);
- OBDO_FREE(oa);
-out:
- return rc;
-}
-
-/* ll_unlink_generic() doesn't update the inode with the new link count.
- * Instead, ll_ddelete() and ll_d_iput() will update it based upon if there
- * is any lock existing. They will recycle dentries and inodes based upon locks
- * too. b=20433 */
-static int ll_unlink_generic(struct inode *dir, struct dentry *dparent,
- struct dentry *dchild, struct qstr *name)
-{
- struct ptlrpc_request *request = NULL;
- struct md_op_data *op_data;
- int rc;
- ENTRY;
+ struct qstr *name = &dchild->d_name;
+ struct ptlrpc_request *request = NULL;
+ struct md_op_data *op_data;
+ struct mdt_body *body;
+ int rc;
+ ENTRY;
CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s, dir="DFID"(%p)\n",
name->len, name->name, PFID(ll_inode2fid(dir)), dir);
- /*
- * XXX: unlink bind mountpoint maybe call to here,
- * just check it as vfs_unlink does.
- */
- if (unlikely(ll_d_mountpoint(dparent, dchild, name)))
- RETURN(-EBUSY);
+ /*
+ * XXX: unlink bind mountpoint maybe call to here,
+ * just check it as vfs_unlink does.
+ */
+ if (unlikely(d_mountpoint(dchild)))
+ RETURN(-EBUSY);
- op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name,
- name->len, 0, LUSTRE_OPC_ANY, NULL);
- if (IS_ERR(op_data))
- RETURN(PTR_ERR(op_data));
+ op_data = ll_prep_md_op_data(NULL, dir, NULL, name->name, name->len, 0,
+ LUSTRE_OPC_ANY, NULL);
+ if (IS_ERR(op_data))
+ RETURN(PTR_ERR(op_data));
- if (dchild != NULL && dchild->d_inode != NULL)
- op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
+ op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
op_data->op_fid2 = op_data->op_fid3;
rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
if (rc)
GOTO(out, rc);
- ll_update_times(request, dir);
- ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
+ /*
+ * The server puts attributes in on the last unlink, use them to update
+ * the link count so the inode can be freed immediately.
+ */
+ body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY);
+ if (body->mbo_valid & OBD_MD_FLNLINK)
+ set_nlink(dchild->d_inode, body->mbo_nlink);
- rc = ll_objects_destroy(request, dir);
- out:
- ptlrpc_req_finished(request);
- RETURN(rc);
+ ll_update_times(request, dir);
+ ll_stats_ops_tally(ll_i2sbi(dir), LPROC_LL_UNLINK, 1);
+
+out:
+ ptlrpc_req_finished(request);
+ RETURN(rc);
}
-static int ll_rename_generic(struct inode *src, struct dentry *src_dparent,
- struct dentry *src_dchild, struct qstr *src_name,
- struct inode *tgt, struct dentry *tgt_dparent,
- struct dentry *tgt_dchild, struct qstr *tgt_name)
+static int ll_rename(struct inode *src, struct dentry *src_dchild,
+ struct inode *tgt, struct dentry *tgt_dchild
+#ifdef HAVE_IOPS_RENAME_WITH_FLAGS
+ , unsigned int flags
+#endif
+ )
{
- struct ptlrpc_request *request = NULL;
- struct ll_sb_info *sbi = ll_i2sbi(src);
- struct md_op_data *op_data;
- int err;
- ENTRY;
+ struct qstr *src_name = &src_dchild->d_name;
+ struct qstr *tgt_name = &tgt_dchild->d_name;
+ struct ptlrpc_request *request = NULL;
+ struct ll_sb_info *sbi = ll_i2sbi(src);
+ struct md_op_data *op_data;
+ int err;
+ ENTRY;
+
+#ifdef HAVE_IOPS_RENAME_WITH_FLAGS
+ if (flags)
+ return -EINVAL;
+#endif
+
CDEBUG(D_VFSTRACE, "VFS Op:oldname=%.*s, src_dir="DFID
"(%p), newname=%.*s, tgt_dir="DFID"(%p)\n",
src_name->len, src_name->name,
PFID(ll_inode2fid(src)), src, tgt_name->len,
tgt_name->name, PFID(ll_inode2fid(tgt)), tgt);
- if (unlikely(ll_d_mountpoint(src_dparent, src_dchild, src_name) ||
- ll_d_mountpoint(tgt_dparent, tgt_dchild, tgt_name)))
- RETURN(-EBUSY);
+ if (unlikely(d_mountpoint(src_dchild) || d_mountpoint(tgt_dchild)))
+ RETURN(-EBUSY);
- op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
- LUSTRE_OPC_ANY, NULL);
- if (IS_ERR(op_data))
- RETURN(PTR_ERR(op_data));
+ op_data = ll_prep_md_op_data(NULL, src, tgt, NULL, 0, 0,
+ LUSTRE_OPC_ANY, NULL);
+ if (IS_ERR(op_data))
+ RETURN(PTR_ERR(op_data));
- if (src_dchild != NULL && src_dchild->d_inode != NULL)
+ if (src_dchild->d_inode != NULL)
op_data->op_fid3 = *ll_inode2fid(src_dchild->d_inode);
- if (tgt_dchild != NULL && tgt_dchild->d_inode != NULL)
+
+ if (tgt_dchild->d_inode != NULL)
op_data->op_fid4 = *ll_inode2fid(tgt_dchild->d_inode);
err = md_rename(sbi->ll_md_exp, op_data,
ll_update_times(request, src);
ll_update_times(request, tgt);
ll_stats_ops_tally(sbi, LPROC_LL_RENAME, 1);
- err = ll_objects_destroy(request, src);
}
ptlrpc_req_finished(request);
- RETURN(err);
-}
-
-static int ll_mknod(struct inode *dir, struct dentry *dchild, ll_umode_t mode,
- dev_t rdev)
-{
- return ll_mknod_generic(dir, &dchild->d_name, mode,
- old_encode_dev(rdev), dchild);
-}
-
-static int ll_unlink(struct inode * dir, struct dentry *dentry)
-{
- return ll_unlink_generic(dir, NULL, dentry, &dentry->d_name);
-}
-
-static int ll_mkdir(struct inode *dir, struct dentry *dentry, ll_umode_t mode)
-{
- return ll_mkdir_generic(dir, &dentry->d_name, mode, dentry);
-}
-
-static int ll_rmdir(struct inode *dir, struct dentry *dentry)
-{
- return ll_rmdir_generic(dir, NULL, dentry, &dentry->d_name);
-}
+ if (err == 0)
+ d_move(src_dchild, tgt_dchild);
-static int ll_symlink(struct inode *dir, struct dentry *dentry,
- const char *oldname)
-{
- return ll_symlink_generic(dir, &dentry->d_name, oldname, dentry);
+ RETURN(err);
}
-static int ll_link(struct dentry *old_dentry, struct inode *dir,
- struct dentry *new_dentry)
-{
- return ll_link_generic(old_dentry->d_inode, dir, &new_dentry->d_name,
- new_dentry);
-}
-
-static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry)
-{
- int err;
- err = ll_rename_generic(old_dir, NULL,
- old_dentry, &old_dentry->d_name,
- new_dir, NULL, new_dentry,
- &new_dentry->d_name);
- if (!err)
- d_move(old_dentry, new_dentry);
- return err;
-}
-
-struct inode_operations ll_dir_inode_operations = {
- .mknod = ll_mknod,
+const struct inode_operations ll_dir_inode_operations = {
+ .mknod = ll_mknod,
#ifdef HAVE_IOP_ATOMIC_OPEN
- .atomic_open = ll_atomic_open,
+ .atomic_open = ll_atomic_open,
#endif
- .lookup = ll_lookup_nd,
- .create = ll_create_nd,
+ .lookup = ll_lookup_nd,
+ .create = ll_create_nd,
/* We need all these non-raw things for NFSD, to not patch it. */
- .unlink = ll_unlink,
- .mkdir = ll_mkdir,
- .rmdir = ll_rmdir,
- .symlink = ll_symlink,
- .link = ll_link,
- .rename = ll_rename,
- .setattr = ll_setattr,
- .getattr = ll_getattr,
- .permission = ll_inode_permission,
- .setxattr = ll_setxattr,
- .getxattr = ll_getxattr,
- .listxattr = ll_listxattr,
- .removexattr = ll_removexattr,
+ .unlink = ll_unlink,
+ .mkdir = ll_mkdir,
+ .rmdir = ll_rmdir,
+ .symlink = ll_symlink,
+ .link = ll_link,
+ .rename = ll_rename,
+ .setattr = ll_setattr,
+ .getattr = ll_getattr,
+ .permission = ll_inode_permission,
+#ifdef HAVE_IOP_XATTR
+ .setxattr = ll_setxattr,
+ .getxattr = ll_getxattr,
+ .removexattr = ll_removexattr,
+#endif
+ .listxattr = ll_listxattr,
#ifdef HAVE_IOP_GET_ACL
- .get_acl = ll_get_acl,
+ .get_acl = ll_get_acl,
+#endif
+#ifdef HAVE_IOP_SET_ACL
+ .set_acl = ll_set_acl,
#endif
};
-struct inode_operations ll_special_inode_operations = {
+const struct inode_operations ll_special_inode_operations = {
.setattr = ll_setattr,
.getattr = ll_getattr,
.permission = ll_inode_permission,
- .setxattr = ll_setxattr,
- .getxattr = ll_getxattr,
- .listxattr = ll_listxattr,
+#ifdef HAVE_IOP_XATTR
+ .setxattr = ll_setxattr,
+ .getxattr = ll_getxattr,
.removexattr = ll_removexattr,
+#endif
+ .listxattr = ll_listxattr,
#ifdef HAVE_IOP_GET_ACL
- .get_acl = ll_get_acl,
+ .get_acl = ll_get_acl,
+#endif
+#ifdef HAVE_IOP_SET_ACL
+ .set_acl = ll_set_acl,
#endif
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff