[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/orangefs/namei.c b/src/kernel/linux/v4.14/fs/orangefs/namei.c
new file mode 100644
index 0000000..05b3abb
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/orangefs/namei.c
@@ -0,0 +1,477 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) 2001 Clemson University and The University of Chicago
+ *
+ * See COPYING in top-level directory.
+ */
+
+/*
+ * Linux VFS namei operations.
+ */
+
+#include "protocol.h"
+#include "orangefs-kernel.h"
+
+/*
+ * Get a newly allocated inode to go with a negative dentry.
+ */
+static int orangefs_create(struct inode *dir,
+ struct dentry *dentry,
+ umode_t mode,
+ bool exclusive)
+{
+ struct orangefs_inode_s *parent = ORANGEFS_I(dir);
+ struct orangefs_kernel_op_s *new_op;
+ struct inode *inode;
+ int ret;
+
+ gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
+ __func__,
+ dentry);
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
+ if (!new_op)
+ return -ENOMEM;
+
+ new_op->upcall.req.create.parent_refn = parent->refn;
+
+ fill_default_sys_attrs(new_op->upcall.req.create.attributes,
+ ORANGEFS_TYPE_METAFILE, mode);
+
+ strncpy(new_op->upcall.req.create.d_name,
+ dentry->d_name.name, ORANGEFS_NAME_MAX);
+
+ ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
+ __func__,
+ dentry,
+ &new_op->downcall.resp.create.refn.khandle,
+ new_op->downcall.resp.create.refn.fs_id,
+ new_op,
+ ret);
+
+ if (ret < 0)
+ goto out;
+
+ inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0,
+ &new_op->downcall.resp.create.refn);
+ if (IS_ERR(inode)) {
+ gossip_err("%s: Failed to allocate inode for file :%pd:\n",
+ __func__,
+ dentry);
+ ret = PTR_ERR(inode);
+ goto out;
+ }
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: Assigned inode :%pU: for file :%pd:\n",
+ __func__,
+ get_khandle_from_ino(inode),
+ dentry);
+
+ d_instantiate_new(dentry, inode);
+ orangefs_set_timeout(dentry);
+ ORANGEFS_I(inode)->getattr_time = jiffies - 1;
+ ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: dentry instantiated for %pd\n",
+ __func__,
+ dentry);
+
+ SetMtimeFlag(parent);
+ dir->i_mtime = dir->i_ctime = current_time(dir);
+ mark_inode_dirty_sync(dir);
+ ret = 0;
+out:
+ op_release(new_op);
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: %pd: returning %d\n",
+ __func__,
+ dentry,
+ ret);
+ return ret;
+}
+
+/*
+ * Attempt to resolve an object name (dentry->d_name), parent handle, and
+ * fsid into a handle for the object.
+ */
+static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
+ unsigned int flags)
+{
+ struct orangefs_inode_s *parent = ORANGEFS_I(dir);
+ struct orangefs_kernel_op_s *new_op;
+ struct inode *inode;
+ struct dentry *res;
+ int ret = -EINVAL;
+
+ /*
+ * in theory we could skip a lookup here (if the intent is to
+ * create) in order to avoid a potentially failed lookup, but
+ * leaving it in can skip a valid lookup and try to create a file
+ * that already exists (e.g. the vfs already handles checking for
+ * -EEXIST on O_EXCL opens, which is broken if we skip this lookup
+ * in the create path)
+ */
+ gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
+ __func__, dentry);
+
+ if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
+ return ERR_PTR(-ENAMETOOLONG);
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
+ if (!new_op)
+ return ERR_PTR(-ENOMEM);
+
+ new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
+
+ gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
+ __FILE__,
+ __func__,
+ __LINE__,
+ &parent->refn.khandle);
+ new_op->upcall.req.lookup.parent_refn = parent->refn;
+
+ strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
+ ORANGEFS_NAME_MAX);
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: doing lookup on %s under %pU,%d\n",
+ __func__,
+ new_op->upcall.req.lookup.d_name,
+ &new_op->upcall.req.lookup.parent_refn.khandle,
+ new_op->upcall.req.lookup.parent_refn.fs_id);
+
+ ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Lookup Got %pU, fsid %d (ret=%d)\n",
+ &new_op->downcall.resp.lookup.refn.khandle,
+ new_op->downcall.resp.lookup.refn.fs_id,
+ ret);
+
+ if (ret < 0) {
+ if (ret == -ENOENT) {
+ /*
+ * if no inode was found, add a negative dentry to
+ * dcache anyway; if we don't, we don't hold expected
+ * lookup semantics and we most noticeably break
+ * during directory renames.
+ *
+ * however, if the operation failed or exited, do not
+ * add the dentry (e.g. in the case that a touch is
+ * issued on a file that already exists that was
+ * interrupted during this lookup -- no need to add
+ * another negative dentry for an existing file)
+ */
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "orangefs_lookup: Adding *negative* dentry "
+ "%p for %pd\n",
+ dentry,
+ dentry);
+
+ d_add(dentry, NULL);
+ res = NULL;
+ goto out;
+ }
+
+ /* must be a non-recoverable error */
+ res = ERR_PTR(ret);
+ goto out;
+ }
+
+ orangefs_set_timeout(dentry);
+
+ inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
+ if (IS_ERR(inode)) {
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "error %ld from iget\n", PTR_ERR(inode));
+ res = ERR_CAST(inode);
+ goto out;
+ }
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s:%s:%d "
+ "Found good inode [%lu] with count [%d]\n",
+ __FILE__,
+ __func__,
+ __LINE__,
+ inode->i_ino,
+ (int)atomic_read(&inode->i_count));
+
+ /* update dentry/inode pair into dcache */
+ res = d_splice_alias(inode, dentry);
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Lookup success (inode ct = %d)\n",
+ (int)atomic_read(&inode->i_count));
+out:
+ op_release(new_op);
+ return res;
+}
+
+/* return 0 on success; non-zero otherwise */
+static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
+{
+ struct inode *inode = dentry->d_inode;
+ struct orangefs_inode_s *parent = ORANGEFS_I(dir);
+ struct orangefs_kernel_op_s *new_op;
+ int ret;
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: called on %pd\n"
+ " (inode %pU): Parent is %pU | fs_id %d\n",
+ __func__,
+ dentry,
+ get_khandle_from_ino(inode),
+ &parent->refn.khandle,
+ parent->refn.fs_id);
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
+ if (!new_op)
+ return -ENOMEM;
+
+ new_op->upcall.req.remove.parent_refn = parent->refn;
+ strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
+ ORANGEFS_NAME_MAX);
+
+ ret = service_operation(new_op, "orangefs_unlink",
+ get_interruptible_flag(inode));
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: service_operation returned:%d:\n",
+ __func__,
+ ret);
+
+ op_release(new_op);
+
+ if (!ret) {
+ drop_nlink(inode);
+
+ SetMtimeFlag(parent);
+ dir->i_mtime = dir->i_ctime = current_time(dir);
+ mark_inode_dirty_sync(dir);
+ }
+ return ret;
+}
+
+static int orangefs_symlink(struct inode *dir,
+ struct dentry *dentry,
+ const char *symname)
+{
+ struct orangefs_inode_s *parent = ORANGEFS_I(dir);
+ struct orangefs_kernel_op_s *new_op;
+ struct inode *inode;
+ int mode = 755;
+ int ret;
+
+ gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
+
+ if (!symname)
+ return -EINVAL;
+
+ if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
+ return -ENAMETOOLONG;
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
+ if (!new_op)
+ return -ENOMEM;
+
+ new_op->upcall.req.sym.parent_refn = parent->refn;
+
+ fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
+ ORANGEFS_TYPE_SYMLINK,
+ mode);
+
+ strncpy(new_op->upcall.req.sym.entry_name,
+ dentry->d_name.name,
+ ORANGEFS_NAME_MAX);
+ strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX);
+
+ ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
+ &new_op->downcall.resp.sym.refn.khandle,
+ new_op->downcall.resp.sym.refn.fs_id, ret);
+
+ if (ret < 0) {
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: failed with error code %d\n",
+ __func__, ret);
+ goto out;
+ }
+
+ inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0,
+ &new_op->downcall.resp.sym.refn);
+ if (IS_ERR(inode)) {
+ gossip_err
+ ("*** Failed to allocate orangefs symlink inode\n");
+ ret = PTR_ERR(inode);
+ goto out;
+ }
+ /*
+ * This is necessary because orangefs_inode_getattr will not
+ * re-read symlink size as it is impossible for it to change.
+ * Invalidating the cache does not help. orangefs_new_inode
+ * does not set the correct size (it does not know symname).
+ */
+ inode->i_size = strlen(symname);
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Assigned symlink inode new number of %pU\n",
+ get_khandle_from_ino(inode));
+
+ d_instantiate_new(dentry, inode);
+ orangefs_set_timeout(dentry);
+ ORANGEFS_I(inode)->getattr_time = jiffies - 1;
+ ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Inode (Symlink) %pU -> %pd\n",
+ get_khandle_from_ino(inode),
+ dentry);
+
+ SetMtimeFlag(parent);
+ dir->i_mtime = dir->i_ctime = current_time(dir);
+ mark_inode_dirty_sync(dir);
+ ret = 0;
+out:
+ op_release(new_op);
+ return ret;
+}
+
+static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ struct orangefs_inode_s *parent = ORANGEFS_I(dir);
+ struct orangefs_kernel_op_s *new_op;
+ struct inode *inode;
+ int ret;
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
+ if (!new_op)
+ return -ENOMEM;
+
+ new_op->upcall.req.mkdir.parent_refn = parent->refn;
+
+ fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
+ ORANGEFS_TYPE_DIRECTORY, mode);
+
+ strncpy(new_op->upcall.req.mkdir.d_name,
+ dentry->d_name.name, ORANGEFS_NAME_MAX);
+
+ ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Mkdir Got ORANGEFS handle %pU on fsid %d\n",
+ &new_op->downcall.resp.mkdir.refn.khandle,
+ new_op->downcall.resp.mkdir.refn.fs_id);
+
+ if (ret < 0) {
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "%s: failed with error code %d\n",
+ __func__, ret);
+ goto out;
+ }
+
+ inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0,
+ &new_op->downcall.resp.mkdir.refn);
+ if (IS_ERR(inode)) {
+ gossip_err("*** Failed to allocate orangefs dir inode\n");
+ ret = PTR_ERR(inode);
+ goto out;
+ }
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Assigned dir inode new number of %pU\n",
+ get_khandle_from_ino(inode));
+
+ d_instantiate_new(dentry, inode);
+ orangefs_set_timeout(dentry);
+ ORANGEFS_I(inode)->getattr_time = jiffies - 1;
+ ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "Inode (Directory) %pU -> %pd\n",
+ get_khandle_from_ino(inode),
+ dentry);
+
+ /*
+ * NOTE: we have no good way to keep nlink consistent for directories
+ * across clients; keep constant at 1.
+ */
+ SetMtimeFlag(parent);
+ dir->i_mtime = dir->i_ctime = current_time(dir);
+ mark_inode_dirty_sync(dir);
+out:
+ op_release(new_op);
+ return ret;
+}
+
+static int orangefs_rename(struct inode *old_dir,
+ struct dentry *old_dentry,
+ struct inode *new_dir,
+ struct dentry *new_dentry,
+ unsigned int flags)
+{
+ struct orangefs_kernel_op_s *new_op;
+ int ret;
+
+ if (flags)
+ return -EINVAL;
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "orangefs_rename: called (%pd2 => %pd2) ct=%d\n",
+ old_dentry, new_dentry, d_count(new_dentry));
+
+ ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;
+
+ new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
+ if (!new_op)
+ return -EINVAL;
+
+ new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
+ new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
+
+ strncpy(new_op->upcall.req.rename.d_old_name,
+ old_dentry->d_name.name,
+ ORANGEFS_NAME_MAX);
+ strncpy(new_op->upcall.req.rename.d_new_name,
+ new_dentry->d_name.name,
+ ORANGEFS_NAME_MAX);
+
+ ret = service_operation(new_op,
+ "orangefs_rename",
+ get_interruptible_flag(old_dentry->d_inode));
+
+ gossip_debug(GOSSIP_NAME_DEBUG,
+ "orangefs_rename: got downcall status %d\n",
+ ret);
+
+ if (new_dentry->d_inode)
+ new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
+
+ op_release(new_op);
+ return ret;
+}
+
+/* ORANGEFS implementation of VFS inode operations for directories */
+const struct inode_operations orangefs_dir_inode_operations = {
+ .lookup = orangefs_lookup,
+ .get_acl = orangefs_get_acl,
+ .set_acl = orangefs_set_acl,
+ .create = orangefs_create,
+ .unlink = orangefs_unlink,
+ .symlink = orangefs_symlink,
+ .mkdir = orangefs_mkdir,
+ .rmdir = orangefs_unlink,
+ .rename = orangefs_rename,
+ .setattr = orangefs_setattr,
+ .getattr = orangefs_getattr,
+ .listxattr = orangefs_listxattr,
+ .permission = orangefs_permission,
+};