8 #include <linux/file.h>
23 int hmdfs_file_open_local(struct inode *inode, struct file *file)  in hmdfs_file_open_local()  argument
26 	struct file *lower_file = NULL;  in hmdfs_file_open_local()
38 	hmdfs_get_lower_path(file->f_path.dentry, &lower_path);  in hmdfs_file_open_local()
41 		lower_file = dentry_open(&lower_path, file->f_flags | O_DIRECT,  in hmdfs_file_open_local()
44 		lower_file = dentry_open(&lower_path, file->f_flags, cred);  in hmdfs_file_open_local()
51 		file->private_data = gfi;  in hmdfs_file_open_local()
52 		hmdfs_update_upper_file(file, lower_file);  in hmdfs_file_open_local()
53 		if (file->f_flags & (O_RDWR | O_WRONLY))  in hmdfs_file_open_local()
60 int hmdfs_file_release_local(struct inode *inode, struct file *file)  in hmdfs_file_release_local()  argument
62 	struct hmdfs_file_info *gfi = hmdfs_f(file);  in hmdfs_file_release_local()
65 	if (file->f_flags & (O_RDWR | O_WRONLY))  in hmdfs_file_release_local()
67 	file->private_data = NULL;  in hmdfs_file_release_local()
73 static void hmdfs_file_accessed(struct file *file)  in hmdfs_file_accessed()  argument
75 	struct file *lower_file = hmdfs_f(file)->lower_file;  in hmdfs_file_accessed()
76 	struct inode *inode = file_inode(file);  in hmdfs_file_accessed()
79 	if (file->f_flags & O_NOATIME)  in hmdfs_file_accessed()
85 ssize_t hmdfs_do_read_iter(struct file *file, struct iov_iter *iter,  in hmdfs_do_read_iter()  argument
89 	struct file *lower_file = hmdfs_f(file)->lower_file;  in hmdfs_do_read_iter()
95 	if (file->f_inode->i_mapping != NULL &&  in hmdfs_do_read_iter()
96 	    file->f_inode->i_mapping->a_ops == &hmdfs_aops_cloud) {  in hmdfs_do_read_iter()
102 	hmdfs_file_accessed(file);  in hmdfs_do_read_iter()
112 static void hmdfs_file_modified(struct file *file)  in hmdfs_file_modified()  argument
114 	struct inode *inode = file_inode(file);  in hmdfs_file_modified()
115 	struct dentry *dentry = file_dentry(file);  in hmdfs_file_modified()
116 	struct file *lower_file = hmdfs_f(file)->lower_file;  in hmdfs_file_modified()
128 ssize_t hmdfs_do_write_iter(struct file *file, struct iov_iter *iter,  in hmdfs_do_write_iter()  argument
132 	struct file *lower_file = hmdfs_f(file)->lower_file;  in hmdfs_do_write_iter()
133 	struct inode *inode = file_inode(file);  in hmdfs_do_write_iter()
140 	ret = file_remove_privs(file);  in hmdfs_do_write_iter()
148 	hmdfs_file_modified(file);  in hmdfs_do_write_iter()
160 int hmdfs_fsync_local(struct file *file, loff_t start, loff_t end, int datasync)  in hmdfs_fsync_local()  argument
163 	struct file *lower_file = hmdfs_f(file)->lower_file;  in hmdfs_fsync_local()
165 	err = __generic_file_fsync(file, start, end, datasync);  in hmdfs_fsync_local()
174 loff_t hmdfs_file_llseek_local(struct file *file, loff_t offset, int whence)  in hmdfs_file_llseek_local()  argument
177 	struct file *lower_file;  in hmdfs_file_llseek_local()
179 	lower_file = hmdfs_f(file)->lower_file;  in hmdfs_file_llseek_local()
180 	lower_file->f_pos = file->f_pos;  in hmdfs_file_llseek_local()
182 	file->f_pos = lower_file->f_pos;  in hmdfs_file_llseek_local()
187 int hmdfs_file_mmap_local(struct file *file, struct vm_area_struct *vma)  in hmdfs_file_mmap_local()  argument
189 	struct hmdfs_file_info *private_data = file->private_data;  in hmdfs_file_mmap_local()
190 	struct file *realfile = NULL;  in hmdfs_file_mmap_local()
203 	if (WARN_ON(file != vma->vm_file))  in hmdfs_file_mmap_local()
211 		fput(file);  in hmdfs_file_mmap_local()
213 	file_accessed(file);  in hmdfs_file_mmap_local()
231 static int hmdfs_iterate_local(struct file *file, struct dir_context *ctx)  in hmdfs_iterate_local()  argument
235 	struct file *lower_file = hmdfs_f(file)->lower_file;  in hmdfs_iterate_local()
240 	lower_file->f_pos = file->f_pos;  in hmdfs_iterate_local()
242 	file->f_pos = lower_file->f_pos;  in hmdfs_iterate_local()
247 	trace_hmdfs_iterate_local(file->f_path.dentry, start_pos, ctx->pos,  in hmdfs_iterate_local()
252 int hmdfs_dir_open_local(struct inode *inode, struct file *file)  in hmdfs_dir_open_local()  argument
255 	struct file *lower_file = NULL;  in hmdfs_dir_open_local()
256 	struct dentry *dentry = file->f_path.dentry;  in hmdfs_dir_open_local()
270 	lower_file = dentry_open(&lower_path, file->f_flags, cred);  in hmdfs_dir_open_local()
277 		file->private_data = gfi;  in hmdfs_dir_open_local()
286 static int hmdfs_dir_release_local(struct inode *inode, struct file *file)  in hmdfs_dir_release_local()  argument
288 	struct hmdfs_file_info *gfi = hmdfs_f(file);  in hmdfs_dir_release_local()
290 	file->private_data = NULL;  in hmdfs_dir_release_local()
304 static int __hmdfs_ioc_set_share_path(struct file *file,  in __hmdfs_ioc_set_share_path()  argument
307 	struct super_block *sb = file->f_inode->i_sb;  in __hmdfs_ioc_set_share_path()
318 	if (!src.file)  in __hmdfs_ioc_set_share_path()
321 	/* only reg file can be shared */  in __hmdfs_ioc_set_share_path()
322 	if (!S_ISREG(src.file->f_inode->i_mode)) {  in __hmdfs_ioc_set_share_path()
327 	/* share file is not allowed to be shared */  in __hmdfs_ioc_set_share_path()
328 	if (hmdfs_is_share_file(src.file)) {  in __hmdfs_ioc_set_share_path()
333 	dentry = src.file->f_path.dentry;  in __hmdfs_ioc_set_share_path()
339 	dir_path = hmdfs_get_dentry_relative_path(file->f_path.dentry);  in __hmdfs_ioc_set_share_path()
356 		err = insert_share_item(st, &relative_path, src.file, sc->cid);  in __hmdfs_ioc_set_share_path()
363 		update_share_item(item, src.file, sc->cid);  in __hmdfs_ioc_set_share_path()
375 static int hmdfs_ioc_set_share_path(struct file *file, unsigned long arg)  in hmdfs_ioc_set_share_path()  argument
383 	return __hmdfs_ioc_set_share_path(file, &sc);  in hmdfs_ioc_set_share_path()
386 static long hmdfs_dir_ioctl_local(struct file *file, unsigned int cmd,  in hmdfs_dir_ioctl_local()  argument
391 		return hmdfs_ioc_set_share_path(file, arg);  in hmdfs_dir_ioctl_local()