6 #include <linux/sysctl.h>
42  * register_sysctl_mount_point() - registers a sysctl mount point
173 			pr_err("sysctl duplicate entry: ");  in insert_entry()
422  * some sysctl variables are readonly even to root.
470 	ei->sysctl = head;  in proc_sys_make_inode()
509 	struct ctl_table_header *head = PROC_I(inode)->sysctl;  in grab_header()
568 	 * At this point we know that the sysctl was not unregistered  in proc_sys_call_handler()
635 	/* sysctl was unregistered */  in proc_sys_open()
655 	/* sysctl was unregistered */  in proc_sys_poll()
797 	 * sysctl entries that are not writeable,  in proc_sys_permission()
815 	else /* Use the permissions on the sysctl table entry */  in proc_sys_permission()
892 	return !PROC_I(d_inode(dentry))->sysctl->unregistering;  in proc_sys_revalidate()
897 	return !!PROC_I(d_inode(dentry))->sysctl->unregistering;  in proc_sys_delete()
931 	head = rcu_dereference(PROC_I(inode)->sysctl);  in proc_sys_compare()
1030 		pr_err("sysctl could not get directory: ");  in get_subdir()
1097 	pr_err("sysctl table check failed: %s/%s %pV\n",  in sysctl_err()
1325  * __register_sysctl_table - register a leaf sysctl table
1326  * @set: Sysctl tree to register on
1327  * @path: The path to the directory the sysctl table is in.
1332  *         after sysctl unregistration.
1335  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1339  * procname - the name of the sysctl file under /proc/sys. Set to %NULL to not
1340  *            enter a sysctl file
1351  * Leaf nodes in the sysctl tree will be represented by a single file
1413  * register_sysctl_sz - register a sysctl table
1414  * @path: The path to the directory the sysctl table is in. If the path
1425  * Register a sysctl table. @table should be a filled in ctl_table
1439  * __register_sysctl_init() - register sysctl table to path
1440  * @path: path name for sysctl base. If that path doesn't exist we will create
1442  * @table: This is the sysctl table that needs to be registered to the path.
1444  * 	lifetime use of the sysctl.
1445  * @table_name: The name of sysctl table, only used for log printing when
1449  * The sysctl interface is used by userspace to query or modify at runtime
1498 			pr_err("sysctl link missing during unregister: ");  in put_links()
1525  * unregister_sysctl_table - unregister a sysctl table hierarchy
1528  * Unregisters the sysctl table and all children. proc entries may not
1576  * Historically some settings had both sysctl and a command line parameter.
1577  * With the generic sysctl. parameter support, we can handle them at a single
1611 /* Set sysctl value passed on kernel command line. */
1624 	if (strncmp(param, "sysctl", sizeof("sysctl") - 1) == 0) {  in process_sysctl_arg()
1625 		param += sizeof("sysctl") - 1;  in process_sysctl_arg()
1644 	 * To set sysctl options, we use a temporary mount of proc, look up the  in process_sysctl_arg()
1646 	 * options were given, we mount it only when the first sysctl option is  in process_sysctl_arg()
1654 			pr_err("Failed to find procfs to set sysctl from command line\n");  in process_sysctl_arg()
1660 			pr_err("Failed to mount procfs to set sysctl from command line\n");  in process_sysctl_arg()
1674 			pr_err("Failed to set sysctl parameter '%s=%s': parameter not found\n",  in process_sysctl_arg()
1677 			pr_err("Failed to set sysctl parameter '%s=%s': permission denied (read-only?)\n",  in process_sysctl_arg()
1680 			pr_err("Error %pe opening proc file to set sysctl parameter '%s=%s'\n",  in process_sysctl_arg()
1688 			pr_err("Failed to set sysctl parameter '%s=%s': invalid value\n",  in process_sysctl_arg()
1691 			pr_err("Error %pe writing to proc file to set sysctl parameter '%s=%s'\n",  in process_sysctl_arg()
1694 		pr_err("Wrote only %zd bytes of %d writing to proc file %s to set sysctl parameter '%s=%s\n",  in process_sysctl_arg()
1700 		pr_err("Error %pe closing proc file to set sysctl parameter '%s=%s\n",  in process_sysctl_arg()
1716 	parse_args("Setting sysctl args", command_line,  in do_sysctl_args()