6 #include <linux/sysctl.h>
38  * register_sysctl_mount_point() - registers a sysctl mount point
171 			pr_err("sysctl duplicate entry: ");  in insert_entry()
415  * some sysctl variables are readonly even to root.
463 	ei->sysctl = head;  in proc_sys_make_inode()
502 	struct ctl_table_header *head = PROC_I(inode)->sysctl;  in grab_header()
566 	 * At this point we know that the sysctl was not unregistered  in proc_sys_call_handler()
633 	/* sysctl was unregistered */  in proc_sys_open()
653 	/* sysctl was unregistered */  in proc_sys_poll()
800 	 * sysctl entries that are not writeable,  in proc_sys_permission()
818 	else /* Use the permissions on the sysctl table entry */  in proc_sys_permission()
894 	return !PROC_I(d_inode(dentry))->sysctl->unregistering;  in proc_sys_revalidate()
899 	return !!PROC_I(d_inode(dentry))->sysctl->unregistering;  in proc_sys_delete()
933 	head = rcu_dereference(PROC_I(inode)->sysctl);  in proc_sys_compare()
1032 		pr_err("sysctl could not get directory: ");  in get_subdir()
1099 	pr_err("sysctl table check failed: %s/%s %pV\n",  in sysctl_err()
1312  * __register_sysctl_table - register a leaf sysctl table
1313  * @set: Sysctl tree to register on
1314  * @path: The path to the directory the sysctl table is in.
1318  * 	 by the caller and free'd later after sysctl unregistration.
1321  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1326  * procname - the name of the sysctl file under /proc/sys. Set to %NULL to not
1327  *            enter a sysctl file
1343  * Leaf nodes in the sysctl tree will be represented by a single file
1406  * register_sysctl_sz - register a sysctl table
1407  * @path: The path to the directory the sysctl table is in. If the path
1418  * Register a sysctl table. @table should be a filled in ctl_table
1432  * __register_sysctl_init() - register sysctl table to path
1433  * @path: path name for sysctl base. If that path doesn't exist we will create
1435  * @table: This is the sysctl table that needs to be registered to the path.
1437  * 	lifetime use of the sysctl.
1438  * @table_name: The name of sysctl table, only used for log printing when
1442  * The sysctl interface is used by userspace to query or modify at runtime
1491 			pr_err("sysctl link missing during unregister: ");  in put_links()
1518  * unregister_sysctl_table - unregister a sysctl table hierarchy
1521  * Unregisters the sysctl table and all children. proc entries may not
1569  * Historically some settings had both sysctl and a command line parameter.
1570  * With the generic sysctl. parameter support, we can handle them at a single
1604 /* Set sysctl value passed on kernel command line. */
1617 	if (strncmp(param, "sysctl", sizeof("sysctl") - 1) == 0) {  in process_sysctl_arg()
1618 		param += sizeof("sysctl") - 1;  in process_sysctl_arg()
1637 	 * To set sysctl options, we use a temporary mount of proc, look up the  in process_sysctl_arg()
1639 	 * options were given, we mount it only when the first sysctl option is  in process_sysctl_arg()
1647 			pr_err("Failed to find procfs to set sysctl from command line\n");  in process_sysctl_arg()
1653 			pr_err("Failed to mount procfs to set sysctl from command line\n");  in process_sysctl_arg()
1667 			pr_err("Failed to set sysctl parameter '%s=%s': parameter not found\n",  in process_sysctl_arg()
1670 			pr_err("Failed to set sysctl parameter '%s=%s': permission denied (read-only?)\n",  in process_sysctl_arg()
1673 			pr_err("Error %pe opening proc file to set sysctl parameter '%s=%s'\n",  in process_sysctl_arg()
1681 			pr_err("Failed to set sysctl parameter '%s=%s': invalid value\n",  in process_sysctl_arg()
1684 			pr_err("Error %pe writing to proc file to set sysctl parameter '%s=%s'\n",  in process_sysctl_arg()
1687 		pr_err("Wrote only %zd bytes of %d writing to proc file %s to set sysctl parameter '%s=%s\n",  in process_sysctl_arg()
1693 		pr_err("Error %pe closing proc file to set sysctl parameter '%s=%s\n",  in process_sysctl_arg()
1709 	parse_args("Setting sysctl args", command_line,  in do_sysctl_args()