17 static bool fuse_use_readdirplus(struct inode *dir, struct dir_context *ctx)  in fuse_use_readdirplus()
33 static void fuse_advise_use_readdirplus(struct inode *dir)  in fuse_advise_use_readdirplus()
110 void fuse_invalidate_attr(struct inode *inode)  in fuse_invalidate_attr()  argument
112 	get_fuse_inode(inode)->i_time = 0;  in fuse_invalidate_attr()
119 void fuse_invalidate_atime(struct inode *inode)  in fuse_invalidate_atime()  argument
121 	if (!IS_RDONLY(inode))  in fuse_invalidate_atime()
122 		fuse_invalidate_attr(inode);  in fuse_invalidate_atime()
189 	struct inode *inode;  in fuse_dentry_revalidate()  local
195 	inode = d_inode_rcu(entry);  in fuse_dentry_revalidate()
196 	if (inode && is_bad_inode(inode))  in fuse_dentry_revalidate()
206 		if (!inode)  in fuse_dentry_revalidate()
213 		fc = get_fuse_conn(inode);  in fuse_dentry_revalidate()
231 			fi = get_fuse_inode(inode);  in fuse_dentry_revalidate()
232 			if (outarg.nodeid != get_node_id(inode)) {  in fuse_dentry_revalidate()
243 		if (ret || (outarg.attr.mode ^ inode->i_mode) & S_IFMT)  in fuse_dentry_revalidate()
246 		fuse_change_attributes(inode, &outarg.attr,  in fuse_dentry_revalidate()
250 	} else if (inode) {  in fuse_dentry_revalidate()
251 		fi = get_fuse_inode(inode);  in fuse_dentry_revalidate()
286 		     struct fuse_entry_out *outarg, struct inode **inode)  in fuse_lookup_name()  argument
294 	*inode = NULL;  in fuse_lookup_name()
319 	*inode = fuse_iget(sb, outarg->nodeid, outarg->generation,  in fuse_lookup_name()
323 	if (!*inode) {  in fuse_lookup_name()
335 static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,  in fuse_lookup()
340 	struct inode *inode;  in fuse_lookup()  local
345 			       &outarg, &inode);  in fuse_lookup()
354 	if (inode && get_node_id(inode) == FUSE_ROOT_ID)  in fuse_lookup()
357 	newent = d_splice_alias(inode, entry);  in fuse_lookup()
372 	iput(inode);  in fuse_lookup()
383 static int fuse_create_open(struct inode *dir, struct dentry *entry,  in fuse_create_open()
388 	struct inode *inode;  in fuse_create_open()  local
442 	inode = fuse_iget(dir->i_sb, outentry.nodeid, outentry.generation,  in fuse_create_open()
444 	if (!inode) {  in fuse_create_open()
452 	d_instantiate(entry, inode);  in fuse_create_open()
460 		fuse_finish_open(inode, file);  in fuse_create_open()
472 static int fuse_mknod(struct inode *, struct dentry *, umode_t, dev_t);
473 static int fuse_atomic_open(struct inode *dir, struct dentry *entry,  in fuse_atomic_open()
520 			    struct inode *dir, struct dentry *entry,  in create_new_entry()
524 	struct inode *inode;  in create_new_entry()  local
548 	inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,  in create_new_entry()
550 	if (!inode) {  in create_new_entry()
556 	err = d_instantiate_no_diralias(entry, inode);  in create_new_entry()
569 static int fuse_mknod(struct inode *dir, struct dentry *entry, umode_t mode,  in fuse_mknod()
592 static int fuse_create(struct inode *dir, struct dentry *entry, umode_t mode,  in fuse_create()
598 static int fuse_mkdir(struct inode *dir, struct dentry *entry, umode_t mode)  in fuse_mkdir()
619 static int fuse_symlink(struct inode *dir, struct dentry *entry,  in fuse_symlink()
635 static inline void fuse_update_ctime(struct inode *inode)  in fuse_update_ctime()  argument
637 	if (!IS_NOCMTIME(inode)) {  in fuse_update_ctime()
638 		inode->i_ctime = current_fs_time(inode->i_sb);  in fuse_update_ctime()
639 		mark_inode_dirty_sync(inode);  in fuse_update_ctime()
643 static int fuse_unlink(struct inode *dir, struct dentry *entry)  in fuse_unlink()
656 		struct inode *inode = d_inode(entry);  in fuse_unlink()  local
657 		struct fuse_inode *fi = get_fuse_inode(inode);  in fuse_unlink()
667 		if (inode->i_nlink > 0)  in fuse_unlink()
668 			drop_nlink(inode);  in fuse_unlink()
670 		fuse_invalidate_attr(inode);  in fuse_unlink()
673 		fuse_update_ctime(inode);  in fuse_unlink()
679 static int fuse_rmdir(struct inode *dir, struct dentry *entry)  in fuse_rmdir()
700 static int fuse_rename_common(struct inode *olddir, struct dentry *oldent,  in fuse_rename_common()
701 			      struct inode *newdir, struct dentry *newent,  in fuse_rename_common()
756 static int fuse_rename2(struct inode *olddir, struct dentry *oldent,  in fuse_rename2()
757 			struct inode *newdir, struct dentry *newent,  in fuse_rename2()
786 static int fuse_link(struct dentry *entry, struct inode *newdir,  in fuse_link()
791 	struct inode *inode = d_inode(entry);  in fuse_link()  local
792 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_link()
796 	inarg.oldnodeid = get_node_id(inode);  in fuse_link()
803 	err = create_new_entry(fc, &args, newdir, newent, inode->i_mode);  in fuse_link()
811 		struct fuse_inode *fi = get_fuse_inode(inode);  in fuse_link()
815 		inc_nlink(inode);  in fuse_link()
817 		fuse_invalidate_attr(inode);  in fuse_link()
818 		fuse_update_ctime(inode);  in fuse_link()
820 		fuse_invalidate_attr(inode);  in fuse_link()
825 static void fuse_fillattr(struct inode *inode, struct fuse_attr *attr,  in fuse_fillattr()  argument
829 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_fillattr()
832 	if (fc->writeback_cache && S_ISREG(inode->i_mode)) {  in fuse_fillattr()
833 		attr->size = i_size_read(inode);  in fuse_fillattr()
834 		attr->mtime = inode->i_mtime.tv_sec;  in fuse_fillattr()
835 		attr->mtimensec = inode->i_mtime.tv_nsec;  in fuse_fillattr()
836 		attr->ctime = inode->i_ctime.tv_sec;  in fuse_fillattr()
837 		attr->ctimensec = inode->i_ctime.tv_nsec;  in fuse_fillattr()
840 	stat->dev = inode->i_sb->s_dev;  in fuse_fillattr()
842 	stat->mode = (inode->i_mode & S_IFMT) | (attr->mode & 07777);  in fuse_fillattr()
846 	stat->rdev = inode->i_rdev;  in fuse_fillattr()
859 		blkbits = inode->i_sb->s_blocksize_bits;  in fuse_fillattr()
864 static int fuse_do_getattr(struct inode *inode, struct kstat *stat,  in fuse_do_getattr()  argument
870 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_do_getattr()
879 	if (file && S_ISREG(inode->i_mode)) {  in fuse_do_getattr()
886 	args.in.h.nodeid = get_node_id(inode);  in fuse_do_getattr()
895 		if ((inode->i_mode ^ outarg.attr.mode) & S_IFMT) {  in fuse_do_getattr()
896 			make_bad_inode(inode);  in fuse_do_getattr()
899 			fuse_change_attributes(inode, &outarg.attr,  in fuse_do_getattr()
903 				fuse_fillattr(inode, &outarg.attr, stat);  in fuse_do_getattr()
909 int fuse_update_attributes(struct inode *inode, struct kstat *stat,  in fuse_update_attributes()  argument
912 	struct fuse_inode *fi = get_fuse_inode(inode);  in fuse_update_attributes()
918 		err = fuse_do_getattr(inode, stat, file);  in fuse_update_attributes()
923 			generic_fillattr(inode, stat);  in fuse_update_attributes()
939 	struct inode *parent;  in fuse_reverse_inval_entry()
1032 static int fuse_access(struct inode *inode, int mask)  in fuse_access()  argument
1034 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_access()
1047 	args.in.h.nodeid = get_node_id(inode);  in fuse_access()
1059 static int fuse_perm_getattr(struct inode *inode, int mask)  in fuse_perm_getattr()  argument
1064 	return fuse_do_getattr(inode, NULL, NULL);  in fuse_perm_getattr()
1080 static int fuse_permission(struct inode *inode, int mask)  in fuse_permission()  argument
1082 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_permission()
1093 	    ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) {  in fuse_permission()
1094 		struct fuse_inode *fi = get_fuse_inode(inode);  in fuse_permission()
1099 			err = fuse_perm_getattr(inode, mask);  in fuse_permission()
1106 		err = generic_permission(inode, mask);  in fuse_permission()
1112 			err = fuse_perm_getattr(inode, mask);  in fuse_permission()
1114 				err = generic_permission(inode, mask);  in fuse_permission()
1122 		err = fuse_access(inode, mask);  in fuse_permission()
1123 	} else if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) {  in fuse_permission()
1124 		if (!(inode->i_mode & S_IXUGO)) {  in fuse_permission()
1128 			err = fuse_perm_getattr(inode, mask);  in fuse_permission()
1129 			if (!err && !(inode->i_mode & S_IXUGO))  in fuse_permission()
1172 	struct inode *dir = d_inode(parent);  in fuse_direntplus_link()
1174 	struct inode *inode;  in fuse_direntplus_link()  local
1208 		inode = d_inode(dentry);  in fuse_direntplus_link()
1209 		if (!inode) {  in fuse_direntplus_link()
1211 		} else if (get_node_id(inode) != o->nodeid ||  in fuse_direntplus_link()
1212 			   ((o->attr.mode ^ inode->i_mode) & S_IFMT)) {  in fuse_direntplus_link()
1214 		} else if (is_bad_inode(inode)) {  in fuse_direntplus_link()
1219 			fi = get_fuse_inode(inode);  in fuse_direntplus_link()
1224 			fuse_change_attributes(inode, &o->attr,  in fuse_direntplus_link()
1242 	inode = fuse_iget(dir->i_sb, o->nodeid, o->generation,  in fuse_direntplus_link()
1244 	if (!inode)  in fuse_direntplus_link()
1247 	alias = d_splice_alias(inode, dentry);  in fuse_direntplus_link()
1259 		set_bit(FUSE_I_INIT_RDPLUS, &get_fuse_inode(inode)->state);  in fuse_direntplus_link()
1317 	struct inode *inode = file_inode(file);  in fuse_readdir()  local
1318 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_readdir()
1322 	if (is_bad_inode(inode))  in fuse_readdir()
1335 	plus = fuse_use_readdirplus(inode, ctx);  in fuse_readdir()
1364 	fuse_invalidate_atime(inode);  in fuse_readdir()
1370 	struct inode *inode = d_inode(dentry);  in fuse_follow_link()  local
1371 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_follow_link()
1381 	args.in.h.nodeid = get_node_id(inode);  in fuse_follow_link()
1394 	fuse_invalidate_atime(inode);  in fuse_follow_link()
1398 static int fuse_dir_open(struct inode *inode, struct file *file)  in fuse_dir_open()  argument
1400 	return fuse_open_common(inode, file, true);  in fuse_dir_open()
1403 static int fuse_dir_release(struct inode *inode, struct file *file)  in fuse_dir_release()  argument
1498 void fuse_set_nowrite(struct inode *inode)  in fuse_set_nowrite()  argument
1500 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_set_nowrite()
1501 	struct fuse_inode *fi = get_fuse_inode(inode);  in fuse_set_nowrite()
1503 	BUG_ON(!mutex_is_locked(&inode->i_mutex));  in fuse_set_nowrite()
1518 static void __fuse_release_nowrite(struct inode *inode)  in __fuse_release_nowrite()  argument
1520 	struct fuse_inode *fi = get_fuse_inode(inode);  in __fuse_release_nowrite()
1524 	fuse_flush_writepages(inode);  in __fuse_release_nowrite()
1527 void fuse_release_nowrite(struct inode *inode)  in fuse_release_nowrite()  argument
1529 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_release_nowrite()
1532 	__fuse_release_nowrite(inode);  in fuse_release_nowrite()
1537 			      struct inode *inode,  in fuse_setattr_fill()  argument
1542 	args->in.h.nodeid = get_node_id(inode);  in fuse_setattr_fill()
1554 int fuse_flush_times(struct inode *inode, struct fuse_file *ff)  in fuse_flush_times()  argument
1556 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_flush_times()
1565 	inarg.mtime = inode->i_mtime.tv_sec;  in fuse_flush_times()
1566 	inarg.mtimensec = inode->i_mtime.tv_nsec;  in fuse_flush_times()
1569 		inarg.ctime = inode->i_ctime.tv_sec;  in fuse_flush_times()
1570 		inarg.ctimensec = inode->i_ctime.tv_nsec;  in fuse_flush_times()
1576 	fuse_setattr_fill(fc, &args, inode, &inarg, &outarg);  in fuse_flush_times()
1589 int fuse_do_setattr(struct inode *inode, struct iattr *attr,  in fuse_do_setattr()  argument
1592 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_do_setattr()
1593 	struct fuse_inode *fi = get_fuse_inode(inode);  in fuse_do_setattr()
1601 	bool trust_local_cmtime = is_wb && S_ISREG(inode->i_mode);  in fuse_do_setattr()
1606 	err = inode_change_ok(inode, attr);  in fuse_do_setattr()
1620 		fuse_set_nowrite(inode);  in fuse_do_setattr()
1622 		if (trust_local_cmtime && attr->ia_size != inode->i_size)  in fuse_do_setattr()
1639 	fuse_setattr_fill(fc, &args, inode, &inarg, &outarg);  in fuse_do_setattr()
1643 			fuse_invalidate_attr(inode);  in fuse_do_setattr()
1647 	if ((inode->i_mode ^ outarg.attr.mode) & S_IFMT) {  in fuse_do_setattr()
1648 		make_bad_inode(inode);  in fuse_do_setattr()
1657 			inode->i_mtime = attr->ia_mtime;  in fuse_do_setattr()
1659 			inode->i_ctime = attr->ia_ctime;  in fuse_do_setattr()
1663 	fuse_change_attributes_common(inode, &outarg.attr,  in fuse_do_setattr()
1665 	oldsize = inode->i_size;  in fuse_do_setattr()
1667 	if (!is_wb || is_truncate || !S_ISREG(inode->i_mode))  in fuse_do_setattr()
1668 		i_size_write(inode, outarg.attr.size);  in fuse_do_setattr()
1672 		__fuse_release_nowrite(inode);  in fuse_do_setattr()
1681 	    S_ISREG(inode->i_mode) && oldsize != outarg.attr.size) {  in fuse_do_setattr()
1682 		truncate_pagecache(inode, outarg.attr.size);  in fuse_do_setattr()
1683 		invalidate_inode_pages2(inode->i_mapping);  in fuse_do_setattr()
1691 		fuse_release_nowrite(inode);  in fuse_do_setattr()
1699 	struct inode *inode = d_inode(entry);  in fuse_setattr()  local
1701 	if (!fuse_allow_current_process(get_fuse_conn(inode)))  in fuse_setattr()
1705 		return fuse_do_setattr(inode, attr, attr->ia_file);  in fuse_setattr()
1707 		return fuse_do_setattr(inode, attr, NULL);  in fuse_setattr()
1713 	struct inode *inode = d_inode(entry);  in fuse_getattr()  local
1714 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_getattr()
1719 	return fuse_update_attributes(inode, stat, NULL, NULL);  in fuse_getattr()
1725 	struct inode *inode = d_inode(entry);  in fuse_setxattr()  local
1726 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_setxattr()
1738 	args.in.h.nodeid = get_node_id(inode);  in fuse_setxattr()
1752 		fuse_invalidate_attr(inode);  in fuse_setxattr()
1753 		fuse_update_ctime(inode);  in fuse_setxattr()
1761 	struct inode *inode = d_inode(entry);  in fuse_getxattr()  local
1762 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_getxattr()
1774 	args.in.h.nodeid = get_node_id(inode);  in fuse_getxattr()
1802 	struct inode *inode = d_inode(entry);  in fuse_listxattr()  local
1803 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_listxattr()
1818 	args.in.h.nodeid = get_node_id(inode);  in fuse_listxattr()
1844 	struct inode *inode = d_inode(entry);  in fuse_removexattr()  local
1845 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_removexattr()
1853 	args.in.h.nodeid = get_node_id(inode);  in fuse_removexattr()
1863 		fuse_invalidate_attr(inode);  in fuse_removexattr()
1864 		fuse_update_ctime(inode);  in fuse_removexattr()
1922 void fuse_init_common(struct inode *inode)  in fuse_init_common()  argument
1924 	inode->i_op = &fuse_common_inode_operations;  in fuse_init_common()
1927 void fuse_init_dir(struct inode *inode)  in fuse_init_dir()  argument
1929 	inode->i_op = &fuse_dir_inode_operations;  in fuse_init_dir()
1930 	inode->i_fop = &fuse_dir_operations;  in fuse_init_dir()
1933 void fuse_init_symlink(struct inode *inode)  in fuse_init_symlink()  argument
1935 	inode->i_op = &fuse_symlink_inode_operations;  in fuse_init_symlink()