static int pvfs2_rmdir(
struct inode *dir,
struct dentry *dentry)
{
int ret = -ENOTEMPTY;
struct inode *inode = dentry->d_inode;
ret = pvfs2_unlink(dir, dentry);
if (ret == 0)
{
pvfs2_inode_t *dir_pinode = PVFS2_I(dir);
inode->i_nlink--;
#if 0
/* NOTE: we have no good way to keep nlink consistent for directories
* across clients; keep constant at 1 -Phil
*/
dir->i_nlink--;
#endif
SetMtimeFlag(dir_pinode);
pvfs2_update_inode_time(dir);
mark_inode_dirty_sync(dir);
}
return ret;
}
static int pvfs2_mkdir(
struct inode *dir,
struct dentry *dentry,
int mode)
{
int ret = -EINVAL;
struct inode *inode = NULL;
inode = pvfs2_create_entry(
dir, dentry, NULL, mode, PVFS2_VFS_OP_MKDIR, &ret);
if (inode)
{
#if 0
/* NOTE: we have no good way to keep nlink consistent for directories
* across clients; keep constant at 1 -Phil
*/
dir->i_nlink++;
#endif
pvfs2_inode_t *dir_pinode = PVFS2_I(dir);
SetMtimeFlag(dir_pinode);
pvfs2_update_inode_time(dir);
mark_inode_dirty_sync(dir);
ret = 0;
}
return ret;
}
static int pvfs2_symlink(
struct inode *dir,
struct dentry *dentry,
const char *symname)
{
int ret = -EINVAL, mode = 755;
struct inode *inode = NULL;
gossip_debug(GOSSIP_NAME_DEBUG, "pvfs2_symlink: called\n");
inode = pvfs2_create_entry(
dir, dentry, symname, mode, PVFS2_VFS_OP_SYMLINK, &ret);
if (inode)
{
pvfs2_inode_t *dir_pinode = PVFS2_I(dir);
SetMtimeFlag(dir_pinode);
pvfs2_update_inode_time(dir);
mark_inode_dirty_sync(dir);
ret = 0;
}
return ret;
}
static int pvfs2_create(
struct inode *dir,
struct dentry *dentry,
int mode,
struct nameidata *nd)
#endif
{
int ret = -EINVAL;
struct inode *inode = NULL;
gossip_debug(GOSSIP_NAME_DEBUG, "pvfs2_create: called\n");
inode = pvfs2_create_entry(
dir, dentry, NULL, mode, PVFS2_VFS_OP_CREATE, &ret);
if (inode)
{
pvfs2_inode_t *dir_pinode = PVFS2_I(dir);
SetMtimeFlag(dir_pinode);
pvfs2_update_inode_time(dir);
mark_inode_dirty_sync(dir);
ret = 0;
}
gossip_debug(GOSSIP_NAME_DEBUG, "pvfs2_create: returning %d\n", ret);
return ret;
}
/* 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 %s\n"
" (inode %pU): Parent is %pU | fs_id %d\n",
__func__,
dentry->d_name.name,
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_fs_time(dir->i_sb);
mark_inode_dirty_sync(dir);
}
return ret;
}
/** Change size of an object referenced by inode
*/
void pvfs2_truncate(struct inode *inode)
{
loff_t orig_size = pvfs2_i_size_read(inode);
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
gossip_debug(GOSSIP_INODE_DEBUG, "pvfs2: pvfs2_truncate called on inode %llu "
"with size %ld\n", llu(get_handle_from_ino(inode)), (long) orig_size);
/* successful truncate when size changes also requires mtime updates
* although the mtime updates are propagated lazily!
*/
if (pvfs2_truncate_inode(inode, inode->i_size) == 0
&& (orig_size != pvfs2_i_size_read(inode)))
{
pvfs2_inode_t *pvfs2_inode = PVFS2_I(inode);
SetMtimeFlag(pvfs2_inode);
inode->i_mtime = CURRENT_TIME;
mark_inode_dirty_sync(inode);
}
}
/* return 0 on success; non-zero otherwise */
static int pvfs2_unlink(
struct inode *dir,
struct dentry *dentry)
{
int ret = -ENOENT;
struct inode *inode = dentry->d_inode;
gossip_debug(GOSSIP_NAME_DEBUG, "pvfs2_unlink: pvfs2_unlink called on %s\n",
dentry->d_name.name);
ret = pvfs2_remove_entry(dir, dentry);
if (ret == 0)
{
pvfs2_inode_t *dir_pinode = PVFS2_I(dir);
inode->i_nlink--;
SetMtimeFlag(dir_pinode);
pvfs2_update_inode_time(dir);
mark_inode_dirty_sync(dir);
}
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(dentry, inode);
unlock_new_inode(inode);
dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
ORANGEFS_I(inode)->getattr_time = jiffies - 1;
gossip_debug(GOSSIP_NAME_DEBUG,
"Inode (Directory) %pU -> %s\n",
get_khandle_from_ino(inode),
dentry->d_name.name);
/*
* 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_fs_time(dir->i_sb);
mark_inode_dirty_sync(dir);
out:
op_release(new_op);
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;
}
gossip_debug(GOSSIP_NAME_DEBUG,
"Assigned symlink inode new number of %pU\n",
get_khandle_from_ino(inode));
d_instantiate(dentry, inode);
unlock_new_inode(inode);
dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
ORANGEFS_I(inode)->getattr_time = jiffies - 1;
gossip_debug(GOSSIP_NAME_DEBUG,
"Inode (Symlink) %pU -> %s\n",
get_khandle_from_ino(inode),
dentry->d_name.name);
SetMtimeFlag(parent);
dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
mark_inode_dirty_sync(dir);
ret = 0;
out:
op_release(new_op);
return ret;
}
/*
* 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: %s\n",
__func__,
dentry->d_name.name);
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: %s: handle:%pU: fsid:%d: new_op:%p: ret:%d:\n",
__func__,
dentry->d_name.name,
&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 :%s:\n",
__func__,
dentry->d_name.name);
ret = PTR_ERR(inode);
goto out;
}
gossip_debug(GOSSIP_NAME_DEBUG,
"%s: Assigned inode :%pU: for file :%s:\n",
__func__,
get_khandle_from_ino(inode),
dentry->d_name.name);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
dentry->d_time = jiffies + dcache_timeout_msecs*HZ/1000;
ORANGEFS_I(inode)->getattr_time = jiffies - 1;
gossip_debug(GOSSIP_NAME_DEBUG,
"%s: dentry instantiated for %s\n",
__func__,
dentry->d_name.name);
SetMtimeFlag(parent);
dir->i_mtime = dir->i_ctime = current_fs_time(dir->i_sb);
mark_inode_dirty_sync(dir);
ret = 0;
out:
op_release(new_op);
gossip_debug(GOSSIP_NAME_DEBUG,
"%s: %s: returning %d\n",
__func__,
dentry->d_name.name,
ret);
return ret;
}
/*
* Common entry point for read/write/readv/writev
* This function will dispatch it to either the direct I/O
* or buffered I/O path depending on the mount options and/or
* augmented/extended metadata attached to the file.
* Note: File extended attributes override any mount options.
*/
static ssize_t do_readv_writev(enum ORANGEFS_io_type type, struct file *file,
loff_t *offset, struct iov_iter *iter)
{
struct inode *inode = file->f_mapping->host;
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_khandle *handle = &orangefs_inode->refn.khandle;
size_t count = iov_iter_count(iter);
ssize_t total_count = 0;
ssize_t ret = -EINVAL;
gossip_debug(GOSSIP_FILE_DEBUG,
"%s-BEGIN(%pU): count(%d) after estimate_max_iovecs.\n",
__func__,
handle,
(int)count);
if (type == ORANGEFS_IO_WRITE) {
gossip_debug(GOSSIP_FILE_DEBUG,
"%s(%pU): proceeding with offset : %llu, "
"size %d\n",
__func__,
handle,
llu(*offset),
(int)count);
}
if (count == 0) {
ret = 0;
goto out;
}
while (iov_iter_count(iter)) {
size_t each_count = iov_iter_count(iter);
size_t amt_complete;
/* how much to transfer in this loop iteration */
if (each_count > orangefs_bufmap_size_query())
each_count = orangefs_bufmap_size_query();
gossip_debug(GOSSIP_FILE_DEBUG,
"%s(%pU): size of each_count(%d)\n",
__func__,
handle,
(int)each_count);
gossip_debug(GOSSIP_FILE_DEBUG,
"%s(%pU): BEFORE wait_for_io: offset is %d\n",
__func__,
handle,
(int)*offset);
ret = wait_for_direct_io(type, inode, offset, iter,
each_count, 0);
gossip_debug(GOSSIP_FILE_DEBUG,
"%s(%pU): return from wait_for_io:%d\n",
__func__,
handle,
(int)ret);
if (ret < 0)
goto out;
*offset += ret;
total_count += ret;
amt_complete = ret;
gossip_debug(GOSSIP_FILE_DEBUG,
"%s(%pU): AFTER wait_for_io: offset is %d\n",
__func__,
handle,
(int)*offset);
/*
* if we got a short I/O operations,
* fall out and return what we got so far
*/
if (amt_complete < each_count)
break;
} /*end while */
out:
if (total_count > 0)
ret = total_count;
if (ret > 0) {
if (type == ORANGEFS_IO_READ) {
file_accessed(file);
} else {
SetMtimeFlag(orangefs_inode);
inode->i_mtime = CURRENT_TIME;
mark_inode_dirty_sync(inode);
}
}
gossip_debug(GOSSIP_FILE_DEBUG,
"%s(%pU): Value(%d) returned.\n",
__func__,
handle,
(int)ret);
return ret;
}
