190 	struct ctl_node *node, struct ctl_table *table)  in init_header()  argument
192 	head->ctl_table = table;  in init_header()
193 	head->ctl_table_arg = table;  in init_header()
205 		for (entry = table; entry->procname; entry++, node++)  in init_header()
419 static int sysctl_perm(struct ctl_table_header *head, struct ctl_table *table, int op)  in sysctl_perm()  argument
425 		mode = root->permissions(head, table);  in sysctl_perm()
427 		mode = table->mode;  in sysctl_perm()
433 		struct ctl_table_header *head, struct ctl_table *table)  in proc_sys_make_inode()  argument
454 	ei->sysctl_entry = table;  in proc_sys_make_inode()
460 	inode->i_mode = table->mode;  in proc_sys_make_inode()
461 	if (!S_ISDIR(table->mode)) {  in proc_sys_make_inode()
474 		root->set_ownership(head, table, &inode->i_uid, &inode->i_gid);  in proc_sys_make_inode()
549 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_call_handler()  local
562 	if (sysctl_perm(head, table, write ? MAY_WRITE : MAY_READ))  in proc_sys_call_handler()
567 	if (!table->proc_handler)  in proc_sys_call_handler()
585 	error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, &kbuf, &count,  in proc_sys_call_handler()
591 	error = table->proc_handler(table, write, kbuf, &count, &iocb->ki_pos);  in proc_sys_call_handler()
623 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_open()  local
629 	if (table->poll)  in proc_sys_open()
630 		filp->private_data = proc_sys_poll_event(table->poll);  in proc_sys_open()
641 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_poll()  local
649 	if (!table->proc_handler)  in proc_sys_poll()
652 	if (!table->poll)  in proc_sys_poll()
656 	poll_wait(filp, &table->poll->wait, wait);  in proc_sys_poll()
658 	if (event != atomic_read(&table->poll->event)) {  in proc_sys_poll()
659 		filp->private_data = proc_sys_poll_event(table->poll);  in proc_sys_poll()
672 				struct ctl_table *table)  in proc_sys_fill_cache()  argument
680 	qname.name = table->procname;  in proc_sys_fill_cache()
681 	qname.len  = strlen(table->procname);  in proc_sys_fill_cache()
692 			inode = proc_sys_make_inode(dir->d_sb, head, table);  in proc_sys_fill_cache()
721 				    struct ctl_table *table)  in proc_sys_link_fill_cache()  argument
730 	if (sysctl_follow_link(&head, &table))  in proc_sys_link_fill_cache()
733 	ret = proc_sys_fill_cache(file, ctx, head, table);  in proc_sys_link_fill_cache()
739 static int scan(struct ctl_table_header *head, struct ctl_table *table,  in scan()  argument
748 	if (unlikely(S_ISLNK(table->mode)))  in scan()
749 		res = proc_sys_link_fill_cache(file, ctx, head, table);  in scan()
751 		res = proc_sys_fill_cache(file, ctx, head, table);  in scan()
795 	struct ctl_table *table;  in proc_sys_permission()  local
806 	table = PROC_I(inode)->sysctl_entry;  in proc_sys_permission()
807 	if (!table) /* global root - r-xr-xr-x */  in proc_sys_permission()
809 	else /* Use the permissions on the sysctl table entry */  in proc_sys_permission()
810 		error = sysctl_perm(head, table, mask & ~MAY_NOT_BLOCK);  in proc_sys_permission()
838 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;  in proc_sys_getattr()  local
844 	if (table)  in proc_sys_getattr()
845 		stat->mode = (stat->mode & S_IFMT) | table->mode;  in proc_sys_getattr()
950 	struct ctl_table *table;  in new_dir()  local
962 	table = (struct ctl_table *)(node + 1);  in new_dir()
963 	new_name = (char *)(table + 2);  in new_dir()
966 	table[0].procname = new_name;  in new_dir()
967 	table[0].mode = S_IFDIR|S_IRUGO|S_IXUGO;  in new_dir()
968 	init_header(&new->header, set->dir.header.root, set, node, table);  in new_dir()
1082 static int sysctl_err(const char *path, struct ctl_table *table, char *fmt, ...)  in sysctl_err()  argument
1091 	pr_err("sysctl table check failed: %s/%s %pV\n",  in sysctl_err()
1092 	       path, table->procname, &vaf);  in sysctl_err()
1098 static int sysctl_check_table_array(const char *path, struct ctl_table *table)  in sysctl_check_table_array()  argument
1102 	if ((table->proc_handler == proc_douintvec) ||  in sysctl_check_table_array()
1103 	    (table->proc_handler == proc_douintvec_minmax)) {  in sysctl_check_table_array()
1104 		if (table->maxlen != sizeof(unsigned int))  in sysctl_check_table_array()
1105 			err |= sysctl_err(path, table, "array not allowed");  in sysctl_check_table_array()
1111 static int sysctl_check_table(const char *path, struct ctl_table *table)  in sysctl_check_table()  argument
1114 	for (; table->procname; table++) {  in sysctl_check_table()
1115 		if (table->child)  in sysctl_check_table()
1116 			err |= sysctl_err(path, table, "Not a file");  in sysctl_check_table()
1118 		if ((table->proc_handler == proc_dostring) ||  in sysctl_check_table()
1119 		    (table->proc_handler == proc_dointvec) ||  in sysctl_check_table()
1120 		    (table->proc_handler == proc_douintvec) ||  in sysctl_check_table()
1121 		    (table->proc_handler == proc_douintvec_minmax) ||  in sysctl_check_table()
1122 		    (table->proc_handler == proc_dointvec_minmax) ||  in sysctl_check_table()
1123 		    (table->proc_handler == proc_dointvec_jiffies) ||  in sysctl_check_table()
1124 		    (table->proc_handler == proc_dointvec_userhz_jiffies) ||  in sysctl_check_table()
1125 		    (table->proc_handler == proc_dointvec_ms_jiffies) ||  in sysctl_check_table()
1126 		    (table->proc_handler == proc_doulongvec_minmax) ||  in sysctl_check_table()
1127 		    (table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) {  in sysctl_check_table()
1128 			if (!table->data)  in sysctl_check_table()
1129 				err |= sysctl_err(path, table, "No data");  in sysctl_check_table()
1130 			if (!table->maxlen)  in sysctl_check_table()
1131 				err |= sysctl_err(path, table, "No maxlen");  in sysctl_check_table()
1133 				err |= sysctl_check_table_array(path, table);  in sysctl_check_table()
1135 		if (!table->proc_handler)  in sysctl_check_table()
1136 			err |= sysctl_err(path, table, "No proc_handler");  in sysctl_check_table()
1138 		if ((table->mode & (S_IRUGO|S_IWUGO)) != table->mode)  in sysctl_check_table()
1139 			err |= sysctl_err(path, table, "bogus .mode 0%o",  in sysctl_check_table()
1140 				table->mode);  in sysctl_check_table()
1145 static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table *table,  in new_links()  argument
1156 	for (entry = table; entry->procname; entry++) {  in new_links()
1174 	for (link = link_table, entry = table; entry->procname; link++, entry++) {  in new_links()
1189 	struct ctl_table *table, struct ctl_table_root *link_root)  in get_links()  argument
1194 	/* Are there links available for every entry in table? */  in get_links()
1195 	for (entry = table; entry->procname; entry++) {  in get_links()
1208 	for (entry = table; entry->procname; entry++) {  in get_links()
1258  * __register_sysctl_table - register a leaf sysctl table
1260  * @path: The path to the directory the sysctl table is in.
1261  * @table: the top-level table structure
1263  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1264  * array. A completely 0 filled entry terminates the table.
1297  * to the table header on success.
1301 	const char *path, struct ctl_table *table)  in __register_sysctl_table()  argument
1311 	for (entry = table; entry->procname; entry++)  in __register_sysctl_table()
1320 	init_header(header, root, set, node, table);  in __register_sysctl_table()
1321 	if (sysctl_check_table(path, table))  in __register_sysctl_table()
1367  * register_sysctl - register a sysctl table
1368  * @path: The path to the directory the sysctl table is in.
1369  * @table: the table structure
1371  * Register a sysctl table. @table should be a filled in ctl_table
1372  * array. A completely 0 filled entry terminates the table.
1376 struct ctl_table_header *register_sysctl(const char *path, struct ctl_table *table)  in register_sysctl()  argument
1379 					path, table);  in register_sysctl()
1396 static int count_subheaders(struct ctl_table *table)  in count_subheaders()  argument
1403 	if (!table || !table->procname)  in count_subheaders()
1406 	for (entry = table; entry->procname; entry++) {  in count_subheaders()
1417 	struct ctl_table *table)  in register_leaf_sysctl_tables()  argument
1425 	for (entry = table; entry->procname; entry++) {  in register_leaf_sysctl_tables()
1432 	files = table;  in register_leaf_sysctl_tables()
1433 	/* If there are mixed files and directories we need a new table */  in register_leaf_sysctl_tables()
1442 		for (new = files, entry = table; entry->procname; entry++) {  in register_leaf_sysctl_tables()
1459 		/* Remember if we need to free the file table */  in register_leaf_sysctl_tables()
1466 	for (entry = table; entry->procname; entry++) {  in register_leaf_sysctl_tables()
1490  * __register_sysctl_paths - register a sysctl table hierarchy
1492  * @path: The path to the directory the sysctl table is in.
1493  * @table: the top-level table structure
1495  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1496  * array. A completely 0 filled entry terminates the table.
1502 	const struct ctl_path *path, struct ctl_table *table)  in __register_sysctl_paths()  argument
1504 	struct ctl_table *ctl_table_arg = table;  in __register_sysctl_paths()
1505 	int nr_subheaders = count_subheaders(table);  in __register_sysctl_paths()
1520 	while (table->procname && table->child && !table[1].procname) {  in __register_sysctl_paths()
1521 		pos = append_path(new_path, pos, table->procname);  in __register_sysctl_paths()
1524 		table = table->child;  in __register_sysctl_paths()
1527 		header = __register_sysctl_table(set, new_path, table);  in __register_sysctl_paths()
1541 						set, table))  in __register_sysctl_paths()
1552 		struct ctl_table *table = subh->ctl_table_arg;  in __register_sysctl_paths()  local
1554 		kfree(table);  in __register_sysctl_paths()
1562  * register_sysctl_table_path - register a sysctl table hierarchy
1563  * @path: The path to the directory the sysctl table is in.
1564  * @table: the top-level table structure
1566  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1567  * array. A completely 0 filled entry terminates the table.
1572 						struct ctl_table *table)  in register_sysctl_paths()  argument
1575 					path, table);  in register_sysctl_paths()
1580  * register_sysctl_table - register a sysctl table hierarchy
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.
1588 struct ctl_table_header *register_sysctl_table(struct ctl_table *table)  in register_sysctl_table()  argument
1592 	return register_sysctl_paths(null_path, table);  in register_sysctl_table()
1650  * unregister_sysctl_table - unregister a sysctl table hierarchy
1653  * Unregisters the sysctl table and all children. proc entries may not
1672 			struct ctl_table *table = subh->ctl_table_arg;  in unregister_sysctl_table()  local
1674 			kfree(table);  in unregister_sysctl_table()