orangefs: reorganize setattr functions to track attribute changes
OrangeFS accepts a mask indicating which attributes were changed. The kernel must not set any bits except those that were actually changed. The kernel must set the uid/gid of the request to the actual uid/gid responsible for the change. Code path for notify_change initiated setattrs is orangefs_setattr(dentry, iattr) -> __orangefs_setattr(inode, iattr) In kernel changes are initiated by calling __orangefs_setattr. Code path for writeback is orangefs_write_inode -> orangefs_inode_setattr attr_valid and attr_uid and attr_gid change together under i_lock. I_DIRTY changes separately. __orangefs_setattr lock if needs to be cleaned first, unlock and retry set attr_valid copy data in unlock mark_inode_dirty orangefs_inode_setattr lock copy attributes out unlock clear getattr_time # __writeback_single_inode clears dirty orangefs_inode_getattr # possible to get here with attr_valid set and not dirty lock if getattr_time ok or attr_valid set, unlock and return unlock do server operation # another thread may getattr or setattr, so check for that lock if getattr_time ok or attr_valid, unlock and return else, copy in update getattr_time unlock Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Martin Brandenburg
Mike Marshall
parent
df2d7337b5
commit
afd9fb2a31
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@ -142,7 +142,7 @@ int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
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rc = __orangefs_set_acl(inode, acl, type);
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} else {
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iattr.ia_valid = ATTR_MODE;
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rc = orangefs_inode_setattr(inode, &iattr);
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rc = __orangefs_setattr(inode, &iattr);
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}
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return rc;
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@ -185,7 +185,7 @@ int orangefs_init_acl(struct inode *inode, struct inode *dir)
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inode->i_mode = mode;
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iattr.ia_mode = mode;
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iattr.ia_valid |= ATTR_MODE;
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orangefs_inode_setattr(inode, &iattr);
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__orangefs_setattr(inode, &iattr);
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}
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return error;
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@ -1,6 +1,7 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) 2001 Clemson University and The University of Chicago
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* Copyright 2018 Omnibond Systems, L.L.C.
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*
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* See COPYING in top-level directory.
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*/
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@ -202,22 +203,31 @@ static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr)
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return ret;
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}
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/*
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* Change attributes of an object referenced by dentry.
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*/
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int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
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int __orangefs_setattr(struct inode *inode, struct iattr *iattr)
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{
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struct inode *inode = dentry->d_inode;
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int ret;
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gossip_debug(GOSSIP_INODE_DEBUG,
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"%s: called on %pd\n",
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__func__,
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dentry);
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ret = setattr_prepare(dentry, iattr);
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if (ret)
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goto out;
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if (iattr->ia_valid & ATTR_MODE) {
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if (iattr->ia_mode & (S_ISVTX)) {
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if (is_root_handle(inode)) {
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/*
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* allow sticky bit to be set on root (since
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* it shows up that way by default anyhow),
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* but don't show it to the server
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*/
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iattr->ia_mode -= S_ISVTX;
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} else {
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gossip_debug(GOSSIP_UTILS_DEBUG,
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"User attempted to set sticky bit on non-root directory; returning EINVAL.\n");
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return -EINVAL;
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}
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}
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if (iattr->ia_mode & (S_ISUID)) {
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gossip_debug(GOSSIP_UTILS_DEBUG,
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"Attempting to set setuid bit (not supported); returning EINVAL.\n");
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return -EINVAL;
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}
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}
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if (iattr->ia_valid & ATTR_SIZE) {
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ret = orangefs_setattr_size(inode, iattr);
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@ -225,7 +235,24 @@ int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
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goto out;
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}
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again:
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spin_lock(&inode->i_lock);
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if (ORANGEFS_I(inode)->attr_valid) {
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if (uid_eq(ORANGEFS_I(inode)->attr_uid, current_fsuid()) &&
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gid_eq(ORANGEFS_I(inode)->attr_gid, current_fsgid())) {
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ORANGEFS_I(inode)->attr_valid = iattr->ia_valid;
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} else {
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spin_unlock(&inode->i_lock);
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write_inode_now(inode, 1);
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goto again;
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}
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} else {
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ORANGEFS_I(inode)->attr_valid = iattr->ia_valid;
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ORANGEFS_I(inode)->attr_uid = current_fsuid();
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ORANGEFS_I(inode)->attr_gid = current_fsgid();
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}
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setattr_copy(inode, iattr);
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spin_unlock(&inode->i_lock);
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mark_inode_dirty(inode);
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if (iattr->ia_valid & ATTR_MODE)
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@ -234,7 +261,25 @@ int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
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ret = 0;
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out:
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gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret);
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return ret;
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}
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/*
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* Change attributes of an object referenced by dentry.
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*/
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int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
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{
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int ret;
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gossip_debug(GOSSIP_INODE_DEBUG, "__orangefs_setattr: called on %pd\n",
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dentry);
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ret = setattr_prepare(dentry, iattr);
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if (ret)
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goto out;
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ret = __orangefs_setattr(d_inode(dentry), iattr);
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sync_inode_metadata(d_inode(dentry), 1);
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out:
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gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n",
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ret);
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return ret;
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}
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@ -300,7 +345,7 @@ int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags
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iattr.ia_valid |= ATTR_CTIME;
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if (flags & S_MTIME)
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iattr.ia_valid |= ATTR_MTIME;
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return orangefs_inode_setattr(inode, &iattr);
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return __orangefs_setattr(inode, &iattr);
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}
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/* ORANGEFS2 implementation of VFS inode operations for files */
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@ -360,6 +405,7 @@ static int orangefs_set_inode(struct inode *inode, void *data)
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struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data;
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ORANGEFS_I(inode)->refn.fs_id = ref->fs_id;
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ORANGEFS_I(inode)->refn.khandle = ref->khandle;
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ORANGEFS_I(inode)->attr_valid = 0;
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hash_init(ORANGEFS_I(inode)->xattr_cache);
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return 0;
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}
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@ -82,11 +82,10 @@ static int orangefs_create(struct inode *dir,
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__func__,
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dentry);
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dir->i_mtime = dir->i_ctime = current_time(dir);
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memset(&iattr, 0, sizeof iattr);
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iattr.ia_valid |= ATTR_MTIME;
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orangefs_inode_setattr(dir, &iattr);
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mark_inode_dirty_sync(dir);
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iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
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iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
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__orangefs_setattr(dir, &iattr);
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ret = 0;
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out:
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op_release(new_op);
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@ -208,11 +207,10 @@ static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
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if (!ret) {
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drop_nlink(inode);
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dir->i_mtime = dir->i_ctime = current_time(dir);
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memset(&iattr, 0, sizeof iattr);
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iattr.ia_valid |= ATTR_MTIME;
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orangefs_inode_setattr(dir, &iattr);
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mark_inode_dirty_sync(dir);
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iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
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iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
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__orangefs_setattr(dir, &iattr);
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}
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return ret;
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}
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@ -295,11 +293,10 @@ static int orangefs_symlink(struct inode *dir,
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get_khandle_from_ino(inode),
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dentry);
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dir->i_mtime = dir->i_ctime = current_time(dir);
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memset(&iattr, 0, sizeof iattr);
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iattr.ia_valid |= ATTR_MTIME;
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orangefs_inode_setattr(dir, &iattr);
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mark_inode_dirty_sync(dir);
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iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
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iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
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__orangefs_setattr(dir, &iattr);
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ret = 0;
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out:
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op_release(new_op);
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@ -366,11 +363,10 @@ static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
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* NOTE: we have no good way to keep nlink consistent for directories
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* across clients; keep constant at 1.
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*/
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dir->i_mtime = dir->i_ctime = current_time(dir);
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memset(&iattr, 0, sizeof iattr);
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iattr.ia_valid |= ATTR_MTIME;
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orangefs_inode_setattr(dir, &iattr);
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mark_inode_dirty_sync(dir);
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iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
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iattr.ia_mtime = iattr.ia_ctime = current_time(dir);
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__orangefs_setattr(dir, &iattr);
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out:
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op_release(new_op);
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return ret;
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@ -393,11 +389,10 @@ static int orangefs_rename(struct inode *old_dir,
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"orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
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old_dentry, new_dentry, d_count(new_dentry));
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new_dir->i_mtime = new_dir->i_ctime = current_time(new_dir);
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memset(&iattr, 0, sizeof iattr);
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iattr.ia_valid |= ATTR_MTIME;
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orangefs_inode_setattr(new_dir, &iattr);
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mark_inode_dirty_sync(new_dir);
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iattr.ia_valid |= ATTR_MTIME | ATTR_CTIME;
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iattr.ia_mtime = iattr.ia_ctime = current_time(new_dir);
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__orangefs_setattr(new_dir, &iattr);
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new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
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if (!new_op)
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@ -193,6 +193,9 @@ struct orangefs_inode_s {
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sector_t last_failed_block_index_read;
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unsigned long getattr_time;
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int attr_valid;
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kuid_t attr_uid;
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kgid_t attr_gid;
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DECLARE_HASHTABLE(xattr_cache, 4);
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};
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@ -345,7 +348,8 @@ struct inode *orangefs_new_inode(struct super_block *sb,
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dev_t dev,
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struct orangefs_object_kref *ref);
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int orangefs_setattr(struct dentry *dentry, struct iattr *iattr);
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int __orangefs_setattr(struct inode *, struct iattr *);
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int orangefs_setattr(struct dentry *, struct iattr *);
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int orangefs_getattr(const struct path *path, struct kstat *stat,
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u32 request_mask, unsigned int flags);
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@ -403,7 +407,7 @@ int orangefs_inode_getattr(struct inode *, int);
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int orangefs_inode_check_changed(struct inode *inode);
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int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr);
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int orangefs_inode_setattr(struct inode *inode);
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bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op);
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@ -136,51 +136,37 @@ static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs)
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* NOTE: in kernel land, we never use the sys_attr->link_target for
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* anything, so don't bother copying it into the sys_attr object here.
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*/
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static inline int copy_attributes_from_inode(struct inode *inode,
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struct ORANGEFS_sys_attr_s *attrs,
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struct iattr *iattr)
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static inline void copy_attributes_from_inode(struct inode *inode,
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struct ORANGEFS_sys_attr_s *attrs)
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{
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umode_t tmp_mode;
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if (!iattr || !inode || !attrs) {
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gossip_err("NULL iattr (%p), inode (%p), attrs (%p) "
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"in copy_attributes_from_inode!\n",
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iattr,
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inode,
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attrs);
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return -EINVAL;
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}
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/*
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* We need to be careful to only copy the attributes out of the
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* iattr object that we know are valid.
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*/
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struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
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attrs->mask = 0;
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if (iattr->ia_valid & ATTR_UID) {
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attrs->owner = from_kuid(&init_user_ns, iattr->ia_uid);
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if (orangefs_inode->attr_valid & ATTR_UID) {
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attrs->owner = from_kuid(&init_user_ns, inode->i_uid);
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attrs->mask |= ORANGEFS_ATTR_SYS_UID;
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gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner);
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}
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if (iattr->ia_valid & ATTR_GID) {
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attrs->group = from_kgid(&init_user_ns, iattr->ia_gid);
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if (orangefs_inode->attr_valid & ATTR_GID) {
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attrs->group = from_kgid(&init_user_ns, inode->i_gid);
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attrs->mask |= ORANGEFS_ATTR_SYS_GID;
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gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group);
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}
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if (iattr->ia_valid & ATTR_ATIME) {
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if (orangefs_inode->attr_valid & ATTR_ATIME) {
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attrs->mask |= ORANGEFS_ATTR_SYS_ATIME;
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if (iattr->ia_valid & ATTR_ATIME_SET) {
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attrs->atime = (time64_t)iattr->ia_atime.tv_sec;
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if (orangefs_inode->attr_valid & ATTR_ATIME_SET) {
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attrs->atime = (time64_t)inode->i_atime.tv_sec;
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attrs->mask |= ORANGEFS_ATTR_SYS_ATIME_SET;
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}
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}
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if (iattr->ia_valid & ATTR_MTIME) {
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if (orangefs_inode->attr_valid & ATTR_MTIME) {
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attrs->mask |= ORANGEFS_ATTR_SYS_MTIME;
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if (iattr->ia_valid & ATTR_MTIME_SET) {
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attrs->mtime = (time64_t)iattr->ia_mtime.tv_sec;
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if (orangefs_inode->attr_valid & ATTR_MTIME_SET) {
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attrs->mtime = (time64_t)inode->i_mtime.tv_sec;
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attrs->mask |= ORANGEFS_ATTR_SYS_MTIME_SET;
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}
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}
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if (iattr->ia_valid & ATTR_CTIME)
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if (orangefs_inode->attr_valid & ATTR_CTIME)
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attrs->mask |= ORANGEFS_ATTR_SYS_CTIME;
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/*
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@ -189,36 +175,10 @@ static inline int copy_attributes_from_inode(struct inode *inode,
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* worry about ATTR_SIZE
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*/
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if (iattr->ia_valid & ATTR_MODE) {
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tmp_mode = iattr->ia_mode;
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if (tmp_mode & (S_ISVTX)) {
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if (is_root_handle(inode)) {
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/*
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* allow sticky bit to be set on root (since
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* it shows up that way by default anyhow),
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* but don't show it to the server
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*/
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tmp_mode -= S_ISVTX;
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} else {
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gossip_debug(GOSSIP_UTILS_DEBUG,
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"%s: setting sticky bit not supported.\n",
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__func__);
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return -EINVAL;
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}
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}
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if (tmp_mode & (S_ISUID)) {
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gossip_debug(GOSSIP_UTILS_DEBUG,
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"%s: setting setuid bit not supported.\n",
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__func__);
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return -EINVAL;
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}
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attrs->perms = ORANGEFS_util_translate_mode(tmp_mode);
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if (orangefs_inode->attr_valid & ATTR_MODE) {
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attrs->perms = ORANGEFS_util_translate_mode(inode->i_mode);
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attrs->mask |= ORANGEFS_ATTR_SYS_PERM;
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}
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return 0;
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}
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static int orangefs_inode_type(enum orangefs_ds_type objtype)
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@ -283,10 +243,16 @@ int orangefs_inode_getattr(struct inode *inode, int flags)
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gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU flags %d\n",
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__func__, get_khandle_from_ino(inode), flags);
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again:
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spin_lock(&inode->i_lock);
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/* Must have all the attributes in the mask and be within cache time. */
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if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) ||
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inode->i_state & I_DIRTY) {
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orangefs_inode->attr_valid) {
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if (orangefs_inode->attr_valid) {
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spin_unlock(&inode->i_lock);
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write_inode_now(inode, 1);
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goto again;
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}
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spin_unlock(&inode->i_lock);
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return 0;
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}
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@ -311,10 +277,16 @@ int orangefs_inode_getattr(struct inode *inode, int flags)
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if (ret != 0)
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goto out;
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again2:
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spin_lock(&inode->i_lock);
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/* Must have all the attributes in the mask and be within cache time. */
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if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) ||
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inode->i_state & I_DIRTY) {
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orangefs_inode->attr_valid) {
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if (orangefs_inode->attr_valid) {
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spin_unlock(&inode->i_lock);
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write_inode_now(inode, 1);
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goto again2;
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}
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gossip_debug(GOSSIP_UTILS_DEBUG, "%s: in cache or dirty\n",
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__func__);
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ret = 0;
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@ -438,7 +410,7 @@ out:
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* issues a orangefs setattr request to make sure the new attribute values
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* take effect if successful. returns 0 on success; -errno otherwise
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*/
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int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr)
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int orangefs_inode_setattr(struct inode *inode)
|
||||
{
|
||||
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
|
||||
struct orangefs_kernel_op_s *new_op;
|
||||
|
|
@ -448,24 +420,26 @@ int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr)
|
|||
if (!new_op)
|
||||
return -ENOMEM;
|
||||
|
||||
spin_lock(&inode->i_lock);
|
||||
new_op->upcall.uid = from_kuid(&init_user_ns, orangefs_inode->attr_uid);
|
||||
new_op->upcall.gid = from_kgid(&init_user_ns, orangefs_inode->attr_gid);
|
||||
new_op->upcall.req.setattr.refn = orangefs_inode->refn;
|
||||
ret = copy_attributes_from_inode(inode,
|
||||
&new_op->upcall.req.setattr.attributes,
|
||||
iattr);
|
||||
if (ret >= 0) {
|
||||
ret = service_operation(new_op, __func__,
|
||||
get_interruptible_flag(inode));
|
||||
copy_attributes_from_inode(inode,
|
||||
&new_op->upcall.req.setattr.attributes);
|
||||
orangefs_inode->attr_valid = 0;
|
||||
spin_unlock(&inode->i_lock);
|
||||
|
||||
gossip_debug(GOSSIP_UTILS_DEBUG,
|
||||
"orangefs_inode_setattr: returning %d\n",
|
||||
ret);
|
||||
}
|
||||
ret = service_operation(new_op, __func__,
|
||||
get_interruptible_flag(inode));
|
||||
gossip_debug(GOSSIP_UTILS_DEBUG,
|
||||
"orangefs_inode_setattr: returning %d\n", ret);
|
||||
if (ret)
|
||||
orangefs_make_bad_inode(inode);
|
||||
|
||||
op_release(new_op);
|
||||
|
||||
if (ret == 0)
|
||||
orangefs_inode->getattr_time = jiffies - 1;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -155,17 +155,8 @@ static void orangefs_destroy_inode(struct inode *inode)
|
|||
static int orangefs_write_inode(struct inode *inode,
|
||||
struct writeback_control *wbc)
|
||||
{
|
||||
struct iattr iattr;
|
||||
gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_write_inode\n");
|
||||
iattr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_ATIME |
|
||||
ATTR_ATIME_SET | ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME;
|
||||
iattr.ia_mode = inode->i_mode;
|
||||
iattr.ia_uid = inode->i_uid;
|
||||
iattr.ia_gid = inode->i_gid;
|
||||
iattr.ia_atime = inode->i_atime;
|
||||
iattr.ia_mtime = inode->i_mtime;
|
||||
iattr.ia_ctime = inode->i_ctime;
|
||||
return orangefs_inode_setattr(inode, &iattr);
|
||||
return orangefs_inode_setattr(inode);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Reference in New Issue