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()
937 	head = READ_ONCE(PROC_I(inode)->sysctl);  in proc_sys_compare()
1036 		pr_err("sysctl could not get directory: ");  in get_subdir()
1103 	pr_err("sysctl table check failed: %s/%s %pV\n",  in sysctl_err()
1316  * __register_sysctl_table - register a leaf sysctl table
1317  * @set: Sysctl tree to register on
1318  * @path: The path to the directory the sysctl table is in.
1322  * 	 by the caller and free'd later after sysctl unregistration.
1325  * Register a sysctl table hierarchy. @table should be a filled in ctl_table
1330  * procname - the name of the sysctl file under /proc/sys. Set to %NULL to not
1331  *            enter a sysctl file
1347  * Leaf nodes in the sysctl tree will be represented by a single file
1410  * register_sysctl_sz - register a sysctl table
1411  * @path: The path to the directory the sysctl table is in. If the path
1422  * Register a sysctl table. @table should be a filled in ctl_table
1436  * __register_sysctl_init() - register sysctl table to path
1437  * @path: path name for sysctl base. If that path doesn't exist we will create
1439  * @table: This is the sysctl table that needs to be registered to the path.
1441  * 	lifetime use of the sysctl.
1442  * @table_name: The name of sysctl table, only used for log printing when
1446  * The sysctl interface is used by userspace to query or modify at runtime
1495 			pr_err("sysctl link missing during unregister: ");  in put_links()
1522  * unregister_sysctl_table - unregister a sysctl table hierarchy
1525  * Unregisters the sysctl table and all children. proc entries may not
1573  * Historically some settings had both sysctl and a command line parameter.
1574  * With the generic sysctl. parameter support, we can handle them at a single
1608 /* Set sysctl value passed on kernel command line. */
1621 	if (strncmp(param, "sysctl", sizeof("sysctl") - 1) == 0) {  in process_sysctl_arg()
1622 		param += sizeof("sysctl") - 1;  in process_sysctl_arg()
1641 	 * To set sysctl options, we use a temporary mount of proc, look up the  in process_sysctl_arg()
1643 	 * options were given, we mount it only when the first sysctl option is  in process_sysctl_arg()
1651 			pr_err("Failed to find procfs to set sysctl from command line\n");  in process_sysctl_arg()
1657 			pr_err("Failed to mount procfs to set sysctl from command line\n");  in process_sysctl_arg()
1671 			pr_err("Failed to set sysctl parameter '%s=%s': parameter not found\n",  in process_sysctl_arg()
1674 			pr_err("Failed to set sysctl parameter '%s=%s': permission denied (read-only?)\n",  in process_sysctl_arg()
1677 			pr_err("Error %pe opening proc file to set sysctl parameter '%s=%s'\n",  in process_sysctl_arg()
1685 			pr_err("Failed to set sysctl parameter '%s=%s': invalid value\n",  in process_sysctl_arg()
1688 			pr_err("Error %pe writing to proc file to set sysctl parameter '%s=%s'\n",  in process_sysctl_arg()
1691 		pr_err("Wrote only %zd bytes of %d writing to proc file %s to set sysctl parameter '%s=%s\n",  in process_sysctl_arg()
1697 		pr_err("Error %pe closing proc file to set sysctl parameter '%s=%s\n",  in process_sysctl_arg()
1713 	parse_args("Setting sysctl args", command_line,  in do_sysctl_args()