mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 11:30:53 +07:00
68a24a6cc4
Fortunately OrangeFS has had a getattr request mask for a long time. The server basically has two difficulty levels for attributes. Fetching any attribute except size requires communicating with the metadata server for that handle. Since all the attributes are right there, it makes sense to return them all. Fetching the size requires communicating with every I/O server (that the file is distributed across). Therefore if asked for anything except size, get everything except size, and if asked for size, get everything. Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
473 lines
12 KiB
C
473 lines
12 KiB
C
/*
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* (C) 2001 Clemson University and The University of Chicago
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*
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* See COPYING in top-level directory.
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*/
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/*
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* Linux VFS namei operations.
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*/
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#include "protocol.h"
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#include "orangefs-kernel.h"
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/*
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* Get a newly allocated inode to go with a negative dentry.
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*/
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static int orangefs_create(struct inode *dir,
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struct dentry *dentry,
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umode_t mode,
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bool exclusive)
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{
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struct orangefs_inode_s *parent = ORANGEFS_I(dir);
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struct orangefs_kernel_op_s *new_op;
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struct inode *inode;
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int ret;
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gossip_debug(GOSSIP_NAME_DEBUG, "%s: %pd\n",
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__func__,
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dentry);
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new_op = op_alloc(ORANGEFS_VFS_OP_CREATE);
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if (!new_op)
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return -ENOMEM;
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new_op->upcall.req.create.parent_refn = parent->refn;
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fill_default_sys_attrs(new_op->upcall.req.create.attributes,
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ORANGEFS_TYPE_METAFILE, mode);
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strncpy(new_op->upcall.req.create.d_name,
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dentry->d_name.name, ORANGEFS_NAME_MAX);
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ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
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__func__,
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dentry,
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&new_op->downcall.resp.create.refn.khandle,
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new_op->downcall.resp.create.refn.fs_id,
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new_op,
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ret);
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if (ret < 0)
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goto out;
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inode = orangefs_new_inode(dir->i_sb, dir, S_IFREG | mode, 0,
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&new_op->downcall.resp.create.refn);
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if (IS_ERR(inode)) {
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gossip_err("%s: Failed to allocate inode for file :%pd:\n",
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__func__,
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dentry);
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ret = PTR_ERR(inode);
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goto out;
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}
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: Assigned inode :%pU: for file :%pd:\n",
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__func__,
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get_khandle_from_ino(inode),
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dentry);
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d_instantiate(dentry, inode);
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unlock_new_inode(inode);
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orangefs_set_timeout(dentry);
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ORANGEFS_I(inode)->getattr_time = jiffies - 1;
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ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: dentry instantiated for %pd\n",
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__func__,
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dentry);
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SetMtimeFlag(parent);
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dir->i_mtime = dir->i_ctime = current_time(dir);
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mark_inode_dirty_sync(dir);
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ret = 0;
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out:
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op_release(new_op);
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: %pd: returning %d\n",
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__func__,
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dentry,
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ret);
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return ret;
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}
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/*
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* Attempt to resolve an object name (dentry->d_name), parent handle, and
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* fsid into a handle for the object.
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*/
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static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
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unsigned int flags)
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{
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struct orangefs_inode_s *parent = ORANGEFS_I(dir);
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struct orangefs_kernel_op_s *new_op;
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struct inode *inode;
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struct dentry *res;
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int ret = -EINVAL;
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/*
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* in theory we could skip a lookup here (if the intent is to
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* create) in order to avoid a potentially failed lookup, but
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* leaving it in can skip a valid lookup and try to create a file
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* that already exists (e.g. the vfs already handles checking for
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* -EEXIST on O_EXCL opens, which is broken if we skip this lookup
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* in the create path)
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*/
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gossip_debug(GOSSIP_NAME_DEBUG, "%s called on %pd\n",
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__func__, dentry);
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if (dentry->d_name.len > (ORANGEFS_NAME_MAX - 1))
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return ERR_PTR(-ENAMETOOLONG);
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new_op = op_alloc(ORANGEFS_VFS_OP_LOOKUP);
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if (!new_op)
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return ERR_PTR(-ENOMEM);
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new_op->upcall.req.lookup.sym_follow = ORANGEFS_LOOKUP_LINK_NO_FOLLOW;
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gossip_debug(GOSSIP_NAME_DEBUG, "%s:%s:%d using parent %pU\n",
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__FILE__,
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__func__,
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__LINE__,
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&parent->refn.khandle);
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new_op->upcall.req.lookup.parent_refn = parent->refn;
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strncpy(new_op->upcall.req.lookup.d_name, dentry->d_name.name,
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ORANGEFS_NAME_MAX);
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: doing lookup on %s under %pU,%d\n",
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__func__,
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new_op->upcall.req.lookup.d_name,
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&new_op->upcall.req.lookup.parent_refn.khandle,
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new_op->upcall.req.lookup.parent_refn.fs_id);
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ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Lookup Got %pU, fsid %d (ret=%d)\n",
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&new_op->downcall.resp.lookup.refn.khandle,
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new_op->downcall.resp.lookup.refn.fs_id,
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ret);
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if (ret < 0) {
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if (ret == -ENOENT) {
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/*
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* if no inode was found, add a negative dentry to
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* dcache anyway; if we don't, we don't hold expected
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* lookup semantics and we most noticeably break
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* during directory renames.
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*
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* however, if the operation failed or exited, do not
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* add the dentry (e.g. in the case that a touch is
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* issued on a file that already exists that was
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* interrupted during this lookup -- no need to add
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* another negative dentry for an existing file)
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*/
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gossip_debug(GOSSIP_NAME_DEBUG,
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"orangefs_lookup: Adding *negative* dentry "
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"%p for %pd\n",
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dentry,
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dentry);
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d_add(dentry, NULL);
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res = NULL;
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goto out;
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}
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/* must be a non-recoverable error */
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res = ERR_PTR(ret);
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goto out;
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}
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orangefs_set_timeout(dentry);
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inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
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if (IS_ERR(inode)) {
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gossip_debug(GOSSIP_NAME_DEBUG,
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"error %ld from iget\n", PTR_ERR(inode));
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res = ERR_CAST(inode);
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goto out;
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}
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s:%s:%d "
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"Found good inode [%lu] with count [%d]\n",
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__FILE__,
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__func__,
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__LINE__,
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inode->i_ino,
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(int)atomic_read(&inode->i_count));
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/* update dentry/inode pair into dcache */
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res = d_splice_alias(inode, dentry);
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Lookup success (inode ct = %d)\n",
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(int)atomic_read(&inode->i_count));
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out:
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op_release(new_op);
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return res;
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}
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/* return 0 on success; non-zero otherwise */
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static int orangefs_unlink(struct inode *dir, struct dentry *dentry)
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{
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struct inode *inode = dentry->d_inode;
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struct orangefs_inode_s *parent = ORANGEFS_I(dir);
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struct orangefs_kernel_op_s *new_op;
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int ret;
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: called on %pd\n"
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" (inode %pU): Parent is %pU | fs_id %d\n",
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__func__,
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dentry,
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get_khandle_from_ino(inode),
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&parent->refn.khandle,
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parent->refn.fs_id);
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new_op = op_alloc(ORANGEFS_VFS_OP_REMOVE);
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if (!new_op)
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return -ENOMEM;
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new_op->upcall.req.remove.parent_refn = parent->refn;
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strncpy(new_op->upcall.req.remove.d_name, dentry->d_name.name,
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ORANGEFS_NAME_MAX);
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ret = service_operation(new_op, "orangefs_unlink",
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get_interruptible_flag(inode));
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: service_operation returned:%d:\n",
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__func__,
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ret);
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op_release(new_op);
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if (!ret) {
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drop_nlink(inode);
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SetMtimeFlag(parent);
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dir->i_mtime = dir->i_ctime = current_time(dir);
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mark_inode_dirty_sync(dir);
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}
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return ret;
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}
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static int orangefs_symlink(struct inode *dir,
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struct dentry *dentry,
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const char *symname)
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{
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struct orangefs_inode_s *parent = ORANGEFS_I(dir);
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struct orangefs_kernel_op_s *new_op;
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struct inode *inode;
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int mode = 755;
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int ret;
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gossip_debug(GOSSIP_NAME_DEBUG, "%s: called\n", __func__);
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if (!symname)
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return -EINVAL;
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if (strlen(symname)+1 > ORANGEFS_NAME_MAX)
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return -ENAMETOOLONG;
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new_op = op_alloc(ORANGEFS_VFS_OP_SYMLINK);
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if (!new_op)
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return -ENOMEM;
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new_op->upcall.req.sym.parent_refn = parent->refn;
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fill_default_sys_attrs(new_op->upcall.req.sym.attributes,
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ORANGEFS_TYPE_SYMLINK,
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mode);
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strncpy(new_op->upcall.req.sym.entry_name,
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dentry->d_name.name,
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ORANGEFS_NAME_MAX);
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strncpy(new_op->upcall.req.sym.target, symname, ORANGEFS_NAME_MAX);
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ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Symlink Got ORANGEFS handle %pU on fsid %d (ret=%d)\n",
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&new_op->downcall.resp.sym.refn.khandle,
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new_op->downcall.resp.sym.refn.fs_id, ret);
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if (ret < 0) {
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: failed with error code %d\n",
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__func__, ret);
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goto out;
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}
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inode = orangefs_new_inode(dir->i_sb, dir, S_IFLNK | mode, 0,
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&new_op->downcall.resp.sym.refn);
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if (IS_ERR(inode)) {
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gossip_err
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("*** Failed to allocate orangefs symlink inode\n");
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ret = PTR_ERR(inode);
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goto out;
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}
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Assigned symlink inode new number of %pU\n",
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get_khandle_from_ino(inode));
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d_instantiate(dentry, inode);
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unlock_new_inode(inode);
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orangefs_set_timeout(dentry);
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ORANGEFS_I(inode)->getattr_time = jiffies - 1;
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ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Inode (Symlink) %pU -> %pd\n",
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get_khandle_from_ino(inode),
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dentry);
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SetMtimeFlag(parent);
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dir->i_mtime = dir->i_ctime = current_time(dir);
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mark_inode_dirty_sync(dir);
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ret = 0;
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out:
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op_release(new_op);
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return ret;
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}
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static int orangefs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
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{
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struct orangefs_inode_s *parent = ORANGEFS_I(dir);
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struct orangefs_kernel_op_s *new_op;
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struct inode *inode;
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int ret;
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new_op = op_alloc(ORANGEFS_VFS_OP_MKDIR);
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if (!new_op)
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return -ENOMEM;
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new_op->upcall.req.mkdir.parent_refn = parent->refn;
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fill_default_sys_attrs(new_op->upcall.req.mkdir.attributes,
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ORANGEFS_TYPE_DIRECTORY, mode);
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strncpy(new_op->upcall.req.mkdir.d_name,
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dentry->d_name.name, ORANGEFS_NAME_MAX);
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ret = service_operation(new_op, __func__, get_interruptible_flag(dir));
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Mkdir Got ORANGEFS handle %pU on fsid %d\n",
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&new_op->downcall.resp.mkdir.refn.khandle,
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new_op->downcall.resp.mkdir.refn.fs_id);
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if (ret < 0) {
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gossip_debug(GOSSIP_NAME_DEBUG,
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"%s: failed with error code %d\n",
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__func__, ret);
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goto out;
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}
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inode = orangefs_new_inode(dir->i_sb, dir, S_IFDIR | mode, 0,
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&new_op->downcall.resp.mkdir.refn);
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if (IS_ERR(inode)) {
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gossip_err("*** Failed to allocate orangefs dir inode\n");
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ret = PTR_ERR(inode);
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goto out;
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}
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Assigned dir inode new number of %pU\n",
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get_khandle_from_ino(inode));
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d_instantiate(dentry, inode);
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unlock_new_inode(inode);
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orangefs_set_timeout(dentry);
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ORANGEFS_I(inode)->getattr_time = jiffies - 1;
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ORANGEFS_I(inode)->getattr_mask = STATX_BASIC_STATS;
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gossip_debug(GOSSIP_NAME_DEBUG,
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"Inode (Directory) %pU -> %pd\n",
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get_khandle_from_ino(inode),
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dentry);
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/*
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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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SetMtimeFlag(parent);
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dir->i_mtime = dir->i_ctime = current_time(dir);
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mark_inode_dirty_sync(dir);
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out:
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op_release(new_op);
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return ret;
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}
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static int orangefs_rename(struct inode *old_dir,
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struct dentry *old_dentry,
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struct inode *new_dir,
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struct dentry *new_dentry,
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unsigned int flags)
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{
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struct orangefs_kernel_op_s *new_op;
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int ret;
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if (flags)
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return -EINVAL;
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gossip_debug(GOSSIP_NAME_DEBUG,
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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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ORANGEFS_I(new_dentry->d_parent->d_inode)->getattr_time = jiffies - 1;
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new_op = op_alloc(ORANGEFS_VFS_OP_RENAME);
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if (!new_op)
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return -EINVAL;
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new_op->upcall.req.rename.old_parent_refn = ORANGEFS_I(old_dir)->refn;
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new_op->upcall.req.rename.new_parent_refn = ORANGEFS_I(new_dir)->refn;
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strncpy(new_op->upcall.req.rename.d_old_name,
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old_dentry->d_name.name,
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ORANGEFS_NAME_MAX);
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strncpy(new_op->upcall.req.rename.d_new_name,
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new_dentry->d_name.name,
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ORANGEFS_NAME_MAX);
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ret = service_operation(new_op,
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"orangefs_rename",
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get_interruptible_flag(old_dentry->d_inode));
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gossip_debug(GOSSIP_NAME_DEBUG,
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"orangefs_rename: got downcall status %d\n",
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ret);
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if (new_dentry->d_inode)
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new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode);
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op_release(new_op);
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return ret;
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}
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/* ORANGEFS implementation of VFS inode operations for directories */
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const struct inode_operations orangefs_dir_inode_operations = {
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.lookup = orangefs_lookup,
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.get_acl = orangefs_get_acl,
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.set_acl = orangefs_set_acl,
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.create = orangefs_create,
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.unlink = orangefs_unlink,
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.symlink = orangefs_symlink,
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.mkdir = orangefs_mkdir,
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.rmdir = orangefs_unlink,
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.rename = orangefs_rename,
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.setattr = orangefs_setattr,
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.getattr = orangefs_getattr,
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.listxattr = orangefs_listxattr,
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.permission = orangefs_permission,
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};
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