188 	struct ctl_node *node, struct ctl_table *table)  in init_header()  argument
190 	head->ctl_table = table;  in init_header()
191 	head->ctl_table_arg = table;  in init_header()
203 		for (entry = table; entry->procname; entry++, node++)  in init_header()
450 static int sysctl_perm(struct ctl_table_header *head, struct ctl_table *table, int op)  in sysctl_perm()  argument
456 		mode = root->permissions(head, table);  in sysctl_perm()
458 		mode = table->mode;  in sysctl_perm()
464 		struct ctl_table_header *head, struct ctl_table *table)  in proc_sys_make_inode()  argument
485 	ei->sysctl_entry = table;  in proc_sys_make_inode()
491 	inode->i_mode = table->mode;  in proc_sys_make_inode()
492 	if (!S_ISDIR(table->mode)) {  in proc_sys_make_inode()
505 		root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);  in proc_sys_make_inode()
580 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_call_handler()  local
592 	if (sysctl_perm(head, table, write ? MAY_WRITE : MAY_READ))  in proc_sys_call_handler()
597 	if (!table->proc_handler)  in proc_sys_call_handler()
600 	error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, &count,  in proc_sys_call_handler()
611 		error = table->proc_handler(table, write, (void __user *)new_buf,  in proc_sys_call_handler()
616 		error = table->proc_handler(table, write, buf, &count, ppos);  in proc_sys_call_handler()
642 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_open()  local
648 	if (table->poll)  in proc_sys_open()
649 		filp->private_data = proc_sys_poll_event(table->poll);  in proc_sys_open()
660 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_poll()  local
668 	if (!table->proc_handler)  in proc_sys_poll()
671 	if (!table->poll)  in proc_sys_poll()
675 	poll_wait(filp, &table->poll->wait, wait);  in proc_sys_poll()
677 	if (event != atomic_read(&table->poll->event)) {  in proc_sys_poll()
678 		filp->private_data = proc_sys_poll_event(table->poll);  in proc_sys_poll()
691 				struct ctl_table *table)  in proc_sys_fill_cache()  argument
699 	qname.name = table->procname;  in proc_sys_fill_cache()
700 	qname.len  = strlen(table->procname);  in proc_sys_fill_cache()
711 			inode = proc_sys_make_inode(dir->d_sb, head, table);  in proc_sys_fill_cache()
740 				    struct ctl_table *table)  in proc_sys_link_fill_cache()  argument
749 	if (sysctl_follow_link(&head, &table))  in proc_sys_link_fill_cache()
752 	ret = proc_sys_fill_cache(file, ctx, head, table);  in proc_sys_link_fill_cache()
758 static int scan(struct ctl_table_header *head, struct ctl_table *table,  in scan()  argument
767 	if (unlikely(S_ISLNK(table->mode)))  in scan()
768 		res = proc_sys_link_fill_cache(file, ctx, head, table);  in scan()
770 		res = proc_sys_fill_cache(file, ctx, head, table);  in scan()
814 	struct ctl_table *table;  in proc_sys_permission()  local
825 	table = PROC_I(inode)->sysctl_entry;  in proc_sys_permission()
826 	if (!table) /* global root - r-xr-xr-x */  in proc_sys_permission()
828 	else /* Use the permissions on the sysctl table entry */  in proc_sys_permission()
829 		error = sysctl_perm(head, table, mask & ~MAY_NOT_BLOCK);  in proc_sys_permission()
857 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_getattr()  local
863 	if (table)  in proc_sys_getattr()
864 		stat->mode = (stat->mode & S_IFMT) | table->mode;  in proc_sys_getattr()
967 	struct ctl_table *table;  in new_dir()  local
979 	table = (struct ctl_table *)(node + 1);  in new_dir()
980 	new_name = (char *)(table + 2);  in new_dir()
983 	table[0].procname = new_name;  in new_dir()
984 	table[0].mode = S_IFDIR|S_IRUGO|S_IXUGO;  in new_dir()
985 	init_header(&new->header, set->dir.header.root, set, node, table);  in new_dir()
1099 static int sysctl_err(const char *path, struct ctl_table *table, char *fmt, ...)  in sysctl_err()  argument
1108 	pr_err("sysctl table check failed: %s/%s %pV\n",  in sysctl_err()
1109 	       path, table->procname, &vaf);  in sysctl_err()
1115 static int sysctl_check_table_array(const char *path, struct ctl_table *table)  in sysctl_check_table_array()  argument
1119 	if ((table->proc_handler == proc_douintvec) ||  in sysctl_check_table_array()
1120 	    (table->proc_handler == proc_douintvec_minmax)) {  in sysctl_check_table_array()
1121 		if (table->maxlen != sizeof(unsigned int))  in sysctl_check_table_array()
1122 			err |= sysctl_err(path, table, "array not allowed");  in sysctl_check_table_array()
1128 static int sysctl_check_table(const char *path, struct ctl_table *table)  in sysctl_check_table()  argument
1131 	for (; table->procname; table++) {  in sysctl_check_table()
1132 		if (table->child)  in sysctl_check_table()
1133 			err |= sysctl_err(path, table, "Not a file");  in sysctl_check_table()
1135 		if ((table->proc_handler == proc_dostring) ||  in sysctl_check_table()
1136 		    (table->proc_handler == proc_dointvec) ||  in sysctl_check_table()
1137 		    (table->proc_handler == proc_douintvec) ||  in sysctl_check_table()
1138 		    (table->proc_handler == proc_douintvec_minmax) ||  in sysctl_check_table()
1139 		    (table->proc_handler == proc_dointvec_minmax) ||  in sysctl_check_table()
1140 		    (table->proc_handler == proc_dointvec_jiffies) ||  in sysctl_check_table()
1141 		    (table->proc_handler == proc_dointvec_userhz_jiffies) ||  in sysctl_check_table()
1142 		    (table->proc_handler == proc_dointvec_ms_jiffies) ||  in sysctl_check_table()
1143 		    (table->proc_handler == proc_doulongvec_minmax) ||  in sysctl_check_table()
1144 		    (table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) {  in sysctl_check_table()
1145 			if (!table->data)  in sysctl_check_table()
1146 				err |= sysctl_err(path, table, "No data");  in sysctl_check_table()
1147 			if (!table->maxlen)  in sysctl_check_table()
1148 				err |= sysctl_err(path, table, "No maxlen");  in sysctl_check_table()
1150 				err |= sysctl_check_table_array(path, table);  in sysctl_check_table()
1152 		if (!table->proc_handler)  in sysctl_check_table()
1153 			err |= sysctl_err(path, table, "No proc_handler");  in sysctl_check_table()
1155 		if ((table->mode & (S_IRUGO|S_IWUGO)) != table->mode)  in sysctl_check_table()
1156 			err |= sysctl_err(path, table, "bogus .mode 0%o",  in sysctl_check_table()
1157 				table->mode);  in sysctl_check_table()
1162 static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table *table,  in new_links()  argument
1173 	for (entry = table; entry->procname; entry++) {  in new_links()
1191 	for (link = link_table, entry = table; entry->procname; link++, entry++) {  in new_links()
1206 	struct ctl_table *table, struct ctl_table_root *link_root)  in get_links()  argument
1211 	/* Are there links available for every entry in table? */  in get_links()
1212 	for (entry = table; entry->procname; entry++) {  in get_links()
1225 	for (entry = table; entry->procname; entry++) {  in get_links()
1275  * __register_sysctl_table - register a leaf sysctl table
1277  * @path: The path to the directory the sysctl table is in.
1278  * @table: the top-level table structure
1280  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1281  * array. A completely 0 filled entry terminates the table.
1314  * to the table header on success.
1318 	const char *path, struct ctl_table *table)  in __register_sysctl_table()  argument
1328 	for (entry = table; entry->procname; entry++)  in __register_sysctl_table()
1337 	init_header(header, root, set, node, table);  in __register_sysctl_table()
1338 	if (sysctl_check_table(path, table))  in __register_sysctl_table()
1384  * register_sysctl - register a sysctl table
1385  * @path: The path to the directory the sysctl table is in.
1386  * @table: the table structure
1388  * Register a sysctl table. @table should be a filled in ctl_table
1389  * array. A completely 0 filled entry terminates the table.
1393 struct ctl_table_header *register_sysctl(const char *path, struct ctl_table *table)  in register_sysctl()  argument
1396 					path, table);  in register_sysctl()
1413 static int count_subheaders(struct ctl_table *table)  in count_subheaders()  argument
1420 	if (!table || !table->procname)  in count_subheaders()
1423 	for (entry = table; entry->procname; entry++) {  in count_subheaders()
1434 	struct ctl_table *table)  in register_leaf_sysctl_tables()  argument
1442 	for (entry = table; entry->procname; entry++) {  in register_leaf_sysctl_tables()
1449 	files = table;  in register_leaf_sysctl_tables()
1450 	/* If there are mixed files and directories we need a new table */  in register_leaf_sysctl_tables()
1459 		for (new = files, entry = table; entry->procname; entry++) {  in register_leaf_sysctl_tables()
1476 		/* Remember if we need to free the file table */  in register_leaf_sysctl_tables()
1483 	for (entry = table; entry->procname; entry++) {  in register_leaf_sysctl_tables()
1507  * __register_sysctl_paths - register a sysctl table hierarchy
1509  * @path: The path to the directory the sysctl table is in.
1510  * @table: the top-level table structure
1512  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1513  * array. A completely 0 filled entry terminates the table.
1519 	const struct ctl_path *path, struct ctl_table *table)  in __register_sysctl_paths()  argument
1521 	struct ctl_table *ctl_table_arg = table;  in __register_sysctl_paths()
1522 	int nr_subheaders = count_subheaders(table);  in __register_sysctl_paths()
1537 	while (table->procname && table->child && !table[1].procname) {  in __register_sysctl_paths()
1538 		pos = append_path(new_path, pos, table->procname);  in __register_sysctl_paths()
1541 		table = table->child;  in __register_sysctl_paths()
1544 		header = __register_sysctl_table(set, new_path, table);  in __register_sysctl_paths()
1558 						set, table))  in __register_sysctl_paths()
1569 		struct ctl_table *table = subh->ctl_table_arg;  in __register_sysctl_paths()  local
1571 		kfree(table);  in __register_sysctl_paths()
1579  * register_sysctl_table_path - register a sysctl table hierarchy
1580  * @path: The path to the directory the sysctl table is in.
1581  * @table: the top-level table structure
1583  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1584  * array. A completely 0 filled entry terminates the table.
1589 						struct ctl_table *table)  in register_sysctl_paths()  argument
1592 					path, table);  in register_sysctl_paths()
1597  * register_sysctl_table - register a sysctl table hierarchy
1598  * @table: the top-level table structure
1600  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1601  * array. A completely 0 filled entry terminates the table.
1605 struct ctl_table_header *register_sysctl_table(struct ctl_table *table)  in register_sysctl_table()  argument
1609 	return register_sysctl_paths(null_path, table);  in register_sysctl_table()
1667  * unregister_sysctl_table - unregister a sysctl table hierarchy
1670  * Unregisters the sysctl table and all children. proc entries may not
1689 			struct ctl_table *table = subh->ctl_table_arg;  in unregister_sysctl_table()  local
1691 			kfree(table);  in unregister_sysctl_table()