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62 |
marcus.erl |
/*
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* sysctl.c: General linux system control interface
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*
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* Begun 24 March 1995, Stephen Tweedie
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* Added /proc support, Dec 1995
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* Added bdflush entry and intvec min/max checking, 2/23/96, Tom Dyas.
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* Added hooks for /proc/sys/net (minor, minor patch), 96/4/1, Mike Shaver.
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* Added kernel/java-{interpreter,appletviewer}, 96/5/10, Mike Shaver.
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* Dynamic registration fixes, Stephen Tweedie.
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* Added kswapd-interval, ctrl-alt-del, printk stuff, 1/8/97, Chris Horn.
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* Made sysctl support optional via CONFIG_SYSCTL, 1/10/97, Chris
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* Horn.
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* Added proc_doulongvec_ms_jiffies_minmax, 09/08/99, Carlos H. Bauer.
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* Added proc_doulongvec_minmax, 09/08/99, Carlos H. Bauer.
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* Changed linked lists to use list.h instead of lists.h, 02/24/00, Bill
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* Wendling.
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* The list_for_each() macro wasn't appropriate for the sysctl loop.
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* Removed it and replaced it with older style, 03/23/00, Bill Wendling
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*/
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/swap.h>
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#include <linux/slab.h>
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#include <linux/sysctl.h>
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#include <linux/proc_fs.h>
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#include <linux/security.h>
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#include <linux/ctype.h>
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#include <linux/utsname.h>
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#include <linux/smp_lock.h>
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/kobject.h>
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#include <linux/net.h>
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#include <linux/sysrq.h>
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#include <linux/highuid.h>
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#include <linux/writeback.h>
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#include <linux/hugetlb.h>
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#include <linux/security.h>
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#include <linux/initrd.h>
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#include <linux/times.h>
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#include <linux/limits.h>
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#include <linux/dcache.h>
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#include <linux/syscalls.h>
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#include <linux/nfs_fs.h>
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#include <linux/acpi.h>
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#include <linux/reboot.h>
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#include <asm/uaccess.h>
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#include <asm/processor.h>
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#ifdef CONFIG_X86
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#include <asm/nmi.h>
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#include <asm/stacktrace.h>
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#endif
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static int deprecated_sysctl_warning(struct __sysctl_args *args);
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#if defined(CONFIG_SYSCTL)
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/* External variables not in a header file. */
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extern int C_A_D;
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extern int print_fatal_signals;
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extern int sysctl_overcommit_memory;
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extern int sysctl_overcommit_ratio;
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extern int sysctl_panic_on_oom;
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extern int sysctl_oom_kill_allocating_task;
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extern int max_threads;
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extern int core_uses_pid;
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extern int suid_dumpable;
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extern char core_pattern[];
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extern int pid_max;
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extern int min_free_kbytes;
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extern int printk_ratelimit_jiffies;
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extern int printk_ratelimit_burst;
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extern int pid_max_min, pid_max_max;
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extern int sysctl_drop_caches;
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extern int percpu_pagelist_fraction;
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extern int compat_log;
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extern int maps_protect;
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extern int sysctl_stat_interval;
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extern int audit_argv_kb;
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/* Constants used for minimum and maximum */
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#ifdef CONFIG_DETECT_SOFTLOCKUP
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static int one = 1;
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static int sixty = 60;
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#endif
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| 91 |
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#ifdef CONFIG_MMU
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static int two = 2;
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#endif
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static int zero;
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static int one_hundred = 100;
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/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
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static int maxolduid = 65535;
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static int minolduid;
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static int min_percpu_pagelist_fract = 8;
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static int ngroups_max = NGROUPS_MAX;
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#ifdef CONFIG_KMOD
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extern char modprobe_path[];
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#endif
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#ifdef CONFIG_CHR_DEV_SG
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extern int sg_big_buff;
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#endif
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#ifdef __sparc__
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extern char reboot_command [];
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extern int stop_a_enabled;
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extern int scons_pwroff;
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#endif
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#ifdef __hppa__
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extern int pwrsw_enabled;
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extern int unaligned_enabled;
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#endif
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#ifdef CONFIG_S390
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#ifdef CONFIG_MATHEMU
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extern int sysctl_ieee_emulation_warnings;
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#endif
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extern int sysctl_userprocess_debug;
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extern int spin_retry;
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#endif
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| 131 |
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extern int sysctl_hz_timer;
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| 133 |
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#ifdef CONFIG_BSD_PROCESS_ACCT
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extern int acct_parm[];
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#endif
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#ifdef CONFIG_IA64
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extern int no_unaligned_warning;
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#endif
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| 140 |
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| 141 |
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#ifdef CONFIG_RT_MUTEXES
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extern int max_lock_depth;
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#endif
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| 145 |
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#ifdef CONFIG_SYSCTL_SYSCALL
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static int parse_table(int __user *, int, void __user *, size_t __user *,
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void __user *, size_t, struct ctl_table *);
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#endif
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| 150 |
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#ifdef CONFIG_PROC_SYSCTL
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static int proc_do_cad_pid(struct ctl_table *table, int write, struct file *filp,
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void __user *buffer, size_t *lenp, loff_t *ppos);
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static int proc_dointvec_taint(struct ctl_table *table, int write, struct file *filp,
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void __user *buffer, size_t *lenp, loff_t *ppos);
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#endif
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static struct ctl_table root_table[];
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static struct ctl_table_header root_table_header =
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{ root_table, LIST_HEAD_INIT(root_table_header.ctl_entry) };
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static struct ctl_table kern_table[];
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static struct ctl_table vm_table[];
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static struct ctl_table fs_table[];
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static struct ctl_table debug_table[];
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static struct ctl_table dev_table[];
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extern struct ctl_table random_table[];
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#ifdef CONFIG_INOTIFY_USER
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extern struct ctl_table inotify_table[];
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| 170 |
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#endif
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| 171 |
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| 172 |
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#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
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int sysctl_legacy_va_layout;
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#endif
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| 175 |
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| 176 |
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extern int prove_locking;
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extern int lock_stat;
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| 179 |
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/* The default sysctl tables: */
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| 180 |
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static struct ctl_table root_table[] = {
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{
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.ctl_name = CTL_KERN,
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.procname = "kernel",
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.mode = 0555,
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.child = kern_table,
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},
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{
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.ctl_name = CTL_VM,
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.procname = "vm",
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.mode = 0555,
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.child = vm_table,
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},
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#ifdef CONFIG_NET
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{
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.ctl_name = CTL_NET,
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.procname = "net",
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.mode = 0555,
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.child = net_table,
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},
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#endif
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{
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.ctl_name = CTL_FS,
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.procname = "fs",
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.mode = 0555,
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.child = fs_table,
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},
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{
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.ctl_name = CTL_DEBUG,
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.procname = "debug",
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.mode = 0555,
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.child = debug_table,
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},
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{
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| 215 |
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.ctl_name = CTL_DEV,
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.procname = "dev",
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.mode = 0555,
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| 218 |
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.child = dev_table,
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| 219 |
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},
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| 220 |
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/*
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| 221 |
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* NOTE: do not add new entries to this table unless you have read
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| 222 |
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* Documentation/sysctl/ctl_unnumbered.txt
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| 223 |
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*/
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| 224 |
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{ .ctl_name = 0 }
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| 225 |
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};
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| 226 |
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| 227 |
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#ifdef CONFIG_SCHED_DEBUG
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| 228 |
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static int min_sched_granularity_ns = 100000; /* 100 usecs */
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| 229 |
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static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
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| 230 |
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static int min_wakeup_granularity_ns; /* 0 usecs */
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| 231 |
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static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */
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| 232 |
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#endif
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| 233 |
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| 234 |
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static struct ctl_table kern_table[] = {
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| 235 |
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#ifdef CONFIG_SCHED_DEBUG
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| 236 |
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{
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| 237 |
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.ctl_name = CTL_UNNUMBERED,
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| 238 |
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.procname = "sched_min_granularity_ns",
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| 239 |
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.data = &sysctl_sched_min_granularity,
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| 240 |
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.maxlen = sizeof(unsigned int),
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| 241 |
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.mode = 0644,
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| 242 |
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.proc_handler = &sched_nr_latency_handler,
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| 243 |
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.strategy = &sysctl_intvec,
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| 244 |
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.extra1 = &min_sched_granularity_ns,
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| 245 |
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.extra2 = &max_sched_granularity_ns,
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| 246 |
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},
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| 247 |
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{
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| 248 |
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.ctl_name = CTL_UNNUMBERED,
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| 249 |
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.procname = "sched_latency_ns",
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| 250 |
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.data = &sysctl_sched_latency,
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| 251 |
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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| 253 |
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.proc_handler = &sched_nr_latency_handler,
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| 254 |
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.strategy = &sysctl_intvec,
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| 255 |
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.extra1 = &min_sched_granularity_ns,
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| 256 |
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.extra2 = &max_sched_granularity_ns,
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| 257 |
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},
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| 258 |
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{
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| 259 |
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.ctl_name = CTL_UNNUMBERED,
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| 260 |
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.procname = "sched_wakeup_granularity_ns",
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| 261 |
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.data = &sysctl_sched_wakeup_granularity,
|
| 262 |
|
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.maxlen = sizeof(unsigned int),
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| 263 |
|
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.mode = 0644,
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| 264 |
|
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.proc_handler = &proc_dointvec_minmax,
|
| 265 |
|
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.strategy = &sysctl_intvec,
|
| 266 |
|
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.extra1 = &min_wakeup_granularity_ns,
|
| 267 |
|
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.extra2 = &max_wakeup_granularity_ns,
|
| 268 |
|
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},
|
| 269 |
|
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{
|
| 270 |
|
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.ctl_name = CTL_UNNUMBERED,
|
| 271 |
|
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.procname = "sched_batch_wakeup_granularity_ns",
|
| 272 |
|
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.data = &sysctl_sched_batch_wakeup_granularity,
|
| 273 |
|
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.maxlen = sizeof(unsigned int),
|
| 274 |
|
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.mode = 0644,
|
| 275 |
|
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.proc_handler = &proc_dointvec_minmax,
|
| 276 |
|
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.strategy = &sysctl_intvec,
|
| 277 |
|
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.extra1 = &min_wakeup_granularity_ns,
|
| 278 |
|
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.extra2 = &max_wakeup_granularity_ns,
|
| 279 |
|
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},
|
| 280 |
|
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{
|
| 281 |
|
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.ctl_name = CTL_UNNUMBERED,
|
| 282 |
|
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.procname = "sched_child_runs_first",
|
| 283 |
|
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.data = &sysctl_sched_child_runs_first,
|
| 284 |
|
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.maxlen = sizeof(unsigned int),
|
| 285 |
|
|
.mode = 0644,
|
| 286 |
|
|
.proc_handler = &proc_dointvec,
|
| 287 |
|
|
},
|
| 288 |
|
|
{
|
| 289 |
|
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.ctl_name = CTL_UNNUMBERED,
|
| 290 |
|
|
.procname = "sched_features",
|
| 291 |
|
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.data = &sysctl_sched_features,
|
| 292 |
|
|
.maxlen = sizeof(unsigned int),
|
| 293 |
|
|
.mode = 0644,
|
| 294 |
|
|
.proc_handler = &proc_dointvec,
|
| 295 |
|
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},
|
| 296 |
|
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{
|
| 297 |
|
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.ctl_name = CTL_UNNUMBERED,
|
| 298 |
|
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.procname = "sched_migration_cost",
|
| 299 |
|
|
.data = &sysctl_sched_migration_cost,
|
| 300 |
|
|
.maxlen = sizeof(unsigned int),
|
| 301 |
|
|
.mode = 0644,
|
| 302 |
|
|
.proc_handler = &proc_dointvec,
|
| 303 |
|
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},
|
| 304 |
|
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{
|
| 305 |
|
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.ctl_name = CTL_UNNUMBERED,
|
| 306 |
|
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.procname = "sched_nr_migrate",
|
| 307 |
|
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.data = &sysctl_sched_nr_migrate,
|
| 308 |
|
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.maxlen = sizeof(unsigned int),
|
| 309 |
|
|
.mode = 644,
|
| 310 |
|
|
.proc_handler = &proc_dointvec,
|
| 311 |
|
|
},
|
| 312 |
|
|
#endif
|
| 313 |
|
|
{
|
| 314 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 315 |
|
|
.procname = "sched_compat_yield",
|
| 316 |
|
|
.data = &sysctl_sched_compat_yield,
|
| 317 |
|
|
.maxlen = sizeof(unsigned int),
|
| 318 |
|
|
.mode = 0644,
|
| 319 |
|
|
.proc_handler = &proc_dointvec,
|
| 320 |
|
|
},
|
| 321 |
|
|
#ifdef CONFIG_PROVE_LOCKING
|
| 322 |
|
|
{
|
| 323 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 324 |
|
|
.procname = "prove_locking",
|
| 325 |
|
|
.data = &prove_locking,
|
| 326 |
|
|
.maxlen = sizeof(int),
|
| 327 |
|
|
.mode = 0644,
|
| 328 |
|
|
.proc_handler = &proc_dointvec,
|
| 329 |
|
|
},
|
| 330 |
|
|
#endif
|
| 331 |
|
|
#ifdef CONFIG_LOCK_STAT
|
| 332 |
|
|
{
|
| 333 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 334 |
|
|
.procname = "lock_stat",
|
| 335 |
|
|
.data = &lock_stat,
|
| 336 |
|
|
.maxlen = sizeof(int),
|
| 337 |
|
|
.mode = 0644,
|
| 338 |
|
|
.proc_handler = &proc_dointvec,
|
| 339 |
|
|
},
|
| 340 |
|
|
#endif
|
| 341 |
|
|
{
|
| 342 |
|
|
.ctl_name = KERN_PANIC,
|
| 343 |
|
|
.procname = "panic",
|
| 344 |
|
|
.data = &panic_timeout,
|
| 345 |
|
|
.maxlen = sizeof(int),
|
| 346 |
|
|
.mode = 0644,
|
| 347 |
|
|
.proc_handler = &proc_dointvec,
|
| 348 |
|
|
},
|
| 349 |
|
|
{
|
| 350 |
|
|
.ctl_name = KERN_CORE_USES_PID,
|
| 351 |
|
|
.procname = "core_uses_pid",
|
| 352 |
|
|
.data = &core_uses_pid,
|
| 353 |
|
|
.maxlen = sizeof(int),
|
| 354 |
|
|
.mode = 0644,
|
| 355 |
|
|
.proc_handler = &proc_dointvec,
|
| 356 |
|
|
},
|
| 357 |
|
|
#ifdef CONFIG_AUDITSYSCALL
|
| 358 |
|
|
{
|
| 359 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 360 |
|
|
.procname = "audit_argv_kb",
|
| 361 |
|
|
.data = &audit_argv_kb,
|
| 362 |
|
|
.maxlen = sizeof(int),
|
| 363 |
|
|
.mode = 0644,
|
| 364 |
|
|
.proc_handler = &proc_dointvec,
|
| 365 |
|
|
},
|
| 366 |
|
|
#endif
|
| 367 |
|
|
{
|
| 368 |
|
|
.ctl_name = KERN_CORE_PATTERN,
|
| 369 |
|
|
.procname = "core_pattern",
|
| 370 |
|
|
.data = core_pattern,
|
| 371 |
|
|
.maxlen = CORENAME_MAX_SIZE,
|
| 372 |
|
|
.mode = 0644,
|
| 373 |
|
|
.proc_handler = &proc_dostring,
|
| 374 |
|
|
.strategy = &sysctl_string,
|
| 375 |
|
|
},
|
| 376 |
|
|
#ifdef CONFIG_PROC_SYSCTL
|
| 377 |
|
|
{
|
| 378 |
|
|
.procname = "tainted",
|
| 379 |
|
|
.data = &tainted,
|
| 380 |
|
|
.maxlen = sizeof(int),
|
| 381 |
|
|
.mode = 0644,
|
| 382 |
|
|
.proc_handler = &proc_dointvec_taint,
|
| 383 |
|
|
},
|
| 384 |
|
|
#endif
|
| 385 |
|
|
#ifdef CONFIG_SECURITY_CAPABILITIES
|
| 386 |
|
|
{
|
| 387 |
|
|
.procname = "cap-bound",
|
| 388 |
|
|
.data = &cap_bset,
|
| 389 |
|
|
.maxlen = sizeof(kernel_cap_t),
|
| 390 |
|
|
.mode = 0600,
|
| 391 |
|
|
.proc_handler = &proc_dointvec_bset,
|
| 392 |
|
|
},
|
| 393 |
|
|
#endif /* def CONFIG_SECURITY_CAPABILITIES */
|
| 394 |
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
| 395 |
|
|
{
|
| 396 |
|
|
.ctl_name = KERN_REALROOTDEV,
|
| 397 |
|
|
.procname = "real-root-dev",
|
| 398 |
|
|
.data = &real_root_dev,
|
| 399 |
|
|
.maxlen = sizeof(int),
|
| 400 |
|
|
.mode = 0644,
|
| 401 |
|
|
.proc_handler = &proc_dointvec,
|
| 402 |
|
|
},
|
| 403 |
|
|
#endif
|
| 404 |
|
|
{
|
| 405 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 406 |
|
|
.procname = "print-fatal-signals",
|
| 407 |
|
|
.data = &print_fatal_signals,
|
| 408 |
|
|
.maxlen = sizeof(int),
|
| 409 |
|
|
.mode = 0644,
|
| 410 |
|
|
.proc_handler = &proc_dointvec,
|
| 411 |
|
|
},
|
| 412 |
|
|
#ifdef __sparc__
|
| 413 |
|
|
{
|
| 414 |
|
|
.ctl_name = KERN_SPARC_REBOOT,
|
| 415 |
|
|
.procname = "reboot-cmd",
|
| 416 |
|
|
.data = reboot_command,
|
| 417 |
|
|
.maxlen = 256,
|
| 418 |
|
|
.mode = 0644,
|
| 419 |
|
|
.proc_handler = &proc_dostring,
|
| 420 |
|
|
.strategy = &sysctl_string,
|
| 421 |
|
|
},
|
| 422 |
|
|
{
|
| 423 |
|
|
.ctl_name = KERN_SPARC_STOP_A,
|
| 424 |
|
|
.procname = "stop-a",
|
| 425 |
|
|
.data = &stop_a_enabled,
|
| 426 |
|
|
.maxlen = sizeof (int),
|
| 427 |
|
|
.mode = 0644,
|
| 428 |
|
|
.proc_handler = &proc_dointvec,
|
| 429 |
|
|
},
|
| 430 |
|
|
{
|
| 431 |
|
|
.ctl_name = KERN_SPARC_SCONS_PWROFF,
|
| 432 |
|
|
.procname = "scons-poweroff",
|
| 433 |
|
|
.data = &scons_pwroff,
|
| 434 |
|
|
.maxlen = sizeof (int),
|
| 435 |
|
|
.mode = 0644,
|
| 436 |
|
|
.proc_handler = &proc_dointvec,
|
| 437 |
|
|
},
|
| 438 |
|
|
#endif
|
| 439 |
|
|
#ifdef __hppa__
|
| 440 |
|
|
{
|
| 441 |
|
|
.ctl_name = KERN_HPPA_PWRSW,
|
| 442 |
|
|
.procname = "soft-power",
|
| 443 |
|
|
.data = &pwrsw_enabled,
|
| 444 |
|
|
.maxlen = sizeof (int),
|
| 445 |
|
|
.mode = 0644,
|
| 446 |
|
|
.proc_handler = &proc_dointvec,
|
| 447 |
|
|
},
|
| 448 |
|
|
{
|
| 449 |
|
|
.ctl_name = KERN_HPPA_UNALIGNED,
|
| 450 |
|
|
.procname = "unaligned-trap",
|
| 451 |
|
|
.data = &unaligned_enabled,
|
| 452 |
|
|
.maxlen = sizeof (int),
|
| 453 |
|
|
.mode = 0644,
|
| 454 |
|
|
.proc_handler = &proc_dointvec,
|
| 455 |
|
|
},
|
| 456 |
|
|
#endif
|
| 457 |
|
|
{
|
| 458 |
|
|
.ctl_name = KERN_CTLALTDEL,
|
| 459 |
|
|
.procname = "ctrl-alt-del",
|
| 460 |
|
|
.data = &C_A_D,
|
| 461 |
|
|
.maxlen = sizeof(int),
|
| 462 |
|
|
.mode = 0644,
|
| 463 |
|
|
.proc_handler = &proc_dointvec,
|
| 464 |
|
|
},
|
| 465 |
|
|
{
|
| 466 |
|
|
.ctl_name = KERN_PRINTK,
|
| 467 |
|
|
.procname = "printk",
|
| 468 |
|
|
.data = &console_loglevel,
|
| 469 |
|
|
.maxlen = 4*sizeof(int),
|
| 470 |
|
|
.mode = 0644,
|
| 471 |
|
|
.proc_handler = &proc_dointvec,
|
| 472 |
|
|
},
|
| 473 |
|
|
#ifdef CONFIG_KMOD
|
| 474 |
|
|
{
|
| 475 |
|
|
.ctl_name = KERN_MODPROBE,
|
| 476 |
|
|
.procname = "modprobe",
|
| 477 |
|
|
.data = &modprobe_path,
|
| 478 |
|
|
.maxlen = KMOD_PATH_LEN,
|
| 479 |
|
|
.mode = 0644,
|
| 480 |
|
|
.proc_handler = &proc_dostring,
|
| 481 |
|
|
.strategy = &sysctl_string,
|
| 482 |
|
|
},
|
| 483 |
|
|
#endif
|
| 484 |
|
|
#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
|
| 485 |
|
|
{
|
| 486 |
|
|
.ctl_name = KERN_HOTPLUG,
|
| 487 |
|
|
.procname = "hotplug",
|
| 488 |
|
|
.data = &uevent_helper,
|
| 489 |
|
|
.maxlen = UEVENT_HELPER_PATH_LEN,
|
| 490 |
|
|
.mode = 0644,
|
| 491 |
|
|
.proc_handler = &proc_dostring,
|
| 492 |
|
|
.strategy = &sysctl_string,
|
| 493 |
|
|
},
|
| 494 |
|
|
#endif
|
| 495 |
|
|
#ifdef CONFIG_CHR_DEV_SG
|
| 496 |
|
|
{
|
| 497 |
|
|
.ctl_name = KERN_SG_BIG_BUFF,
|
| 498 |
|
|
.procname = "sg-big-buff",
|
| 499 |
|
|
.data = &sg_big_buff,
|
| 500 |
|
|
.maxlen = sizeof (int),
|
| 501 |
|
|
.mode = 0444,
|
| 502 |
|
|
.proc_handler = &proc_dointvec,
|
| 503 |
|
|
},
|
| 504 |
|
|
#endif
|
| 505 |
|
|
#ifdef CONFIG_BSD_PROCESS_ACCT
|
| 506 |
|
|
{
|
| 507 |
|
|
.ctl_name = KERN_ACCT,
|
| 508 |
|
|
.procname = "acct",
|
| 509 |
|
|
.data = &acct_parm,
|
| 510 |
|
|
.maxlen = 3*sizeof(int),
|
| 511 |
|
|
.mode = 0644,
|
| 512 |
|
|
.proc_handler = &proc_dointvec,
|
| 513 |
|
|
},
|
| 514 |
|
|
#endif
|
| 515 |
|
|
#ifdef CONFIG_MAGIC_SYSRQ
|
| 516 |
|
|
{
|
| 517 |
|
|
.ctl_name = KERN_SYSRQ,
|
| 518 |
|
|
.procname = "sysrq",
|
| 519 |
|
|
.data = &__sysrq_enabled,
|
| 520 |
|
|
.maxlen = sizeof (int),
|
| 521 |
|
|
.mode = 0644,
|
| 522 |
|
|
.proc_handler = &proc_dointvec,
|
| 523 |
|
|
},
|
| 524 |
|
|
#endif
|
| 525 |
|
|
#ifdef CONFIG_PROC_SYSCTL
|
| 526 |
|
|
{
|
| 527 |
|
|
.procname = "cad_pid",
|
| 528 |
|
|
.data = NULL,
|
| 529 |
|
|
.maxlen = sizeof (int),
|
| 530 |
|
|
.mode = 0600,
|
| 531 |
|
|
.proc_handler = &proc_do_cad_pid,
|
| 532 |
|
|
},
|
| 533 |
|
|
#endif
|
| 534 |
|
|
{
|
| 535 |
|
|
.ctl_name = KERN_MAX_THREADS,
|
| 536 |
|
|
.procname = "threads-max",
|
| 537 |
|
|
.data = &max_threads,
|
| 538 |
|
|
.maxlen = sizeof(int),
|
| 539 |
|
|
.mode = 0644,
|
| 540 |
|
|
.proc_handler = &proc_dointvec,
|
| 541 |
|
|
},
|
| 542 |
|
|
{
|
| 543 |
|
|
.ctl_name = KERN_RANDOM,
|
| 544 |
|
|
.procname = "random",
|
| 545 |
|
|
.mode = 0555,
|
| 546 |
|
|
.child = random_table,
|
| 547 |
|
|
},
|
| 548 |
|
|
{
|
| 549 |
|
|
.ctl_name = KERN_OVERFLOWUID,
|
| 550 |
|
|
.procname = "overflowuid",
|
| 551 |
|
|
.data = &overflowuid,
|
| 552 |
|
|
.maxlen = sizeof(int),
|
| 553 |
|
|
.mode = 0644,
|
| 554 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 555 |
|
|
.strategy = &sysctl_intvec,
|
| 556 |
|
|
.extra1 = &minolduid,
|
| 557 |
|
|
.extra2 = &maxolduid,
|
| 558 |
|
|
},
|
| 559 |
|
|
{
|
| 560 |
|
|
.ctl_name = KERN_OVERFLOWGID,
|
| 561 |
|
|
.procname = "overflowgid",
|
| 562 |
|
|
.data = &overflowgid,
|
| 563 |
|
|
.maxlen = sizeof(int),
|
| 564 |
|
|
.mode = 0644,
|
| 565 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 566 |
|
|
.strategy = &sysctl_intvec,
|
| 567 |
|
|
.extra1 = &minolduid,
|
| 568 |
|
|
.extra2 = &maxolduid,
|
| 569 |
|
|
},
|
| 570 |
|
|
#ifdef CONFIG_S390
|
| 571 |
|
|
#ifdef CONFIG_MATHEMU
|
| 572 |
|
|
{
|
| 573 |
|
|
.ctl_name = KERN_IEEE_EMULATION_WARNINGS,
|
| 574 |
|
|
.procname = "ieee_emulation_warnings",
|
| 575 |
|
|
.data = &sysctl_ieee_emulation_warnings,
|
| 576 |
|
|
.maxlen = sizeof(int),
|
| 577 |
|
|
.mode = 0644,
|
| 578 |
|
|
.proc_handler = &proc_dointvec,
|
| 579 |
|
|
},
|
| 580 |
|
|
#endif
|
| 581 |
|
|
#ifdef CONFIG_NO_IDLE_HZ
|
| 582 |
|
|
{
|
| 583 |
|
|
.ctl_name = KERN_HZ_TIMER,
|
| 584 |
|
|
.procname = "hz_timer",
|
| 585 |
|
|
.data = &sysctl_hz_timer,
|
| 586 |
|
|
.maxlen = sizeof(int),
|
| 587 |
|
|
.mode = 0644,
|
| 588 |
|
|
.proc_handler = &proc_dointvec,
|
| 589 |
|
|
},
|
| 590 |
|
|
#endif
|
| 591 |
|
|
{
|
| 592 |
|
|
.ctl_name = KERN_S390_USER_DEBUG_LOGGING,
|
| 593 |
|
|
.procname = "userprocess_debug",
|
| 594 |
|
|
.data = &sysctl_userprocess_debug,
|
| 595 |
|
|
.maxlen = sizeof(int),
|
| 596 |
|
|
.mode = 0644,
|
| 597 |
|
|
.proc_handler = &proc_dointvec,
|
| 598 |
|
|
},
|
| 599 |
|
|
#endif
|
| 600 |
|
|
{
|
| 601 |
|
|
.ctl_name = KERN_PIDMAX,
|
| 602 |
|
|
.procname = "pid_max",
|
| 603 |
|
|
.data = &pid_max,
|
| 604 |
|
|
.maxlen = sizeof (int),
|
| 605 |
|
|
.mode = 0644,
|
| 606 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 607 |
|
|
.strategy = sysctl_intvec,
|
| 608 |
|
|
.extra1 = &pid_max_min,
|
| 609 |
|
|
.extra2 = &pid_max_max,
|
| 610 |
|
|
},
|
| 611 |
|
|
{
|
| 612 |
|
|
.ctl_name = KERN_PANIC_ON_OOPS,
|
| 613 |
|
|
.procname = "panic_on_oops",
|
| 614 |
|
|
.data = &panic_on_oops,
|
| 615 |
|
|
.maxlen = sizeof(int),
|
| 616 |
|
|
.mode = 0644,
|
| 617 |
|
|
.proc_handler = &proc_dointvec,
|
| 618 |
|
|
},
|
| 619 |
|
|
{
|
| 620 |
|
|
.ctl_name = KERN_PRINTK_RATELIMIT,
|
| 621 |
|
|
.procname = "printk_ratelimit",
|
| 622 |
|
|
.data = &printk_ratelimit_jiffies,
|
| 623 |
|
|
.maxlen = sizeof(int),
|
| 624 |
|
|
.mode = 0644,
|
| 625 |
|
|
.proc_handler = &proc_dointvec_jiffies,
|
| 626 |
|
|
.strategy = &sysctl_jiffies,
|
| 627 |
|
|
},
|
| 628 |
|
|
{
|
| 629 |
|
|
.ctl_name = KERN_PRINTK_RATELIMIT_BURST,
|
| 630 |
|
|
.procname = "printk_ratelimit_burst",
|
| 631 |
|
|
.data = &printk_ratelimit_burst,
|
| 632 |
|
|
.maxlen = sizeof(int),
|
| 633 |
|
|
.mode = 0644,
|
| 634 |
|
|
.proc_handler = &proc_dointvec,
|
| 635 |
|
|
},
|
| 636 |
|
|
{
|
| 637 |
|
|
.ctl_name = KERN_NGROUPS_MAX,
|
| 638 |
|
|
.procname = "ngroups_max",
|
| 639 |
|
|
.data = &ngroups_max,
|
| 640 |
|
|
.maxlen = sizeof (int),
|
| 641 |
|
|
.mode = 0444,
|
| 642 |
|
|
.proc_handler = &proc_dointvec,
|
| 643 |
|
|
},
|
| 644 |
|
|
#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86)
|
| 645 |
|
|
{
|
| 646 |
|
|
.ctl_name = KERN_UNKNOWN_NMI_PANIC,
|
| 647 |
|
|
.procname = "unknown_nmi_panic",
|
| 648 |
|
|
.data = &unknown_nmi_panic,
|
| 649 |
|
|
.maxlen = sizeof (int),
|
| 650 |
|
|
.mode = 0644,
|
| 651 |
|
|
.proc_handler = &proc_dointvec,
|
| 652 |
|
|
},
|
| 653 |
|
|
{
|
| 654 |
|
|
.procname = "nmi_watchdog",
|
| 655 |
|
|
.data = &nmi_watchdog_enabled,
|
| 656 |
|
|
.maxlen = sizeof (int),
|
| 657 |
|
|
.mode = 0644,
|
| 658 |
|
|
.proc_handler = &proc_nmi_enabled,
|
| 659 |
|
|
},
|
| 660 |
|
|
#endif
|
| 661 |
|
|
#if defined(CONFIG_X86)
|
| 662 |
|
|
{
|
| 663 |
|
|
.ctl_name = KERN_PANIC_ON_NMI,
|
| 664 |
|
|
.procname = "panic_on_unrecovered_nmi",
|
| 665 |
|
|
.data = &panic_on_unrecovered_nmi,
|
| 666 |
|
|
.maxlen = sizeof(int),
|
| 667 |
|
|
.mode = 0644,
|
| 668 |
|
|
.proc_handler = &proc_dointvec,
|
| 669 |
|
|
},
|
| 670 |
|
|
{
|
| 671 |
|
|
.ctl_name = KERN_BOOTLOADER_TYPE,
|
| 672 |
|
|
.procname = "bootloader_type",
|
| 673 |
|
|
.data = &bootloader_type,
|
| 674 |
|
|
.maxlen = sizeof (int),
|
| 675 |
|
|
.mode = 0444,
|
| 676 |
|
|
.proc_handler = &proc_dointvec,
|
| 677 |
|
|
},
|
| 678 |
|
|
{
|
| 679 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 680 |
|
|
.procname = "kstack_depth_to_print",
|
| 681 |
|
|
.data = &kstack_depth_to_print,
|
| 682 |
|
|
.maxlen = sizeof(int),
|
| 683 |
|
|
.mode = 0644,
|
| 684 |
|
|
.proc_handler = &proc_dointvec,
|
| 685 |
|
|
},
|
| 686 |
|
|
#endif
|
| 687 |
|
|
#if defined(CONFIG_MMU)
|
| 688 |
|
|
{
|
| 689 |
|
|
.ctl_name = KERN_RANDOMIZE,
|
| 690 |
|
|
.procname = "randomize_va_space",
|
| 691 |
|
|
.data = &randomize_va_space,
|
| 692 |
|
|
.maxlen = sizeof(int),
|
| 693 |
|
|
.mode = 0644,
|
| 694 |
|
|
.proc_handler = &proc_dointvec,
|
| 695 |
|
|
},
|
| 696 |
|
|
#endif
|
| 697 |
|
|
#if defined(CONFIG_S390) && defined(CONFIG_SMP)
|
| 698 |
|
|
{
|
| 699 |
|
|
.ctl_name = KERN_SPIN_RETRY,
|
| 700 |
|
|
.procname = "spin_retry",
|
| 701 |
|
|
.data = &spin_retry,
|
| 702 |
|
|
.maxlen = sizeof (int),
|
| 703 |
|
|
.mode = 0644,
|
| 704 |
|
|
.proc_handler = &proc_dointvec,
|
| 705 |
|
|
},
|
| 706 |
|
|
#endif
|
| 707 |
|
|
#if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86)
|
| 708 |
|
|
{
|
| 709 |
|
|
.procname = "acpi_video_flags",
|
| 710 |
|
|
.data = &acpi_realmode_flags,
|
| 711 |
|
|
.maxlen = sizeof (unsigned long),
|
| 712 |
|
|
.mode = 0644,
|
| 713 |
|
|
.proc_handler = &proc_doulongvec_minmax,
|
| 714 |
|
|
},
|
| 715 |
|
|
#endif
|
| 716 |
|
|
#ifdef CONFIG_IA64
|
| 717 |
|
|
{
|
| 718 |
|
|
.ctl_name = KERN_IA64_UNALIGNED,
|
| 719 |
|
|
.procname = "ignore-unaligned-usertrap",
|
| 720 |
|
|
.data = &no_unaligned_warning,
|
| 721 |
|
|
.maxlen = sizeof (int),
|
| 722 |
|
|
.mode = 0644,
|
| 723 |
|
|
.proc_handler = &proc_dointvec,
|
| 724 |
|
|
},
|
| 725 |
|
|
#endif
|
| 726 |
|
|
#ifdef CONFIG_DETECT_SOFTLOCKUP
|
| 727 |
|
|
{
|
| 728 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 729 |
|
|
.procname = "softlockup_thresh",
|
| 730 |
|
|
.data = &softlockup_thresh,
|
| 731 |
|
|
.maxlen = sizeof(int),
|
| 732 |
|
|
.mode = 0644,
|
| 733 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 734 |
|
|
.strategy = &sysctl_intvec,
|
| 735 |
|
|
.extra1 = &one,
|
| 736 |
|
|
.extra2 = &sixty,
|
| 737 |
|
|
},
|
| 738 |
|
|
#endif
|
| 739 |
|
|
#ifdef CONFIG_COMPAT
|
| 740 |
|
|
{
|
| 741 |
|
|
.ctl_name = KERN_COMPAT_LOG,
|
| 742 |
|
|
.procname = "compat-log",
|
| 743 |
|
|
.data = &compat_log,
|
| 744 |
|
|
.maxlen = sizeof (int),
|
| 745 |
|
|
.mode = 0644,
|
| 746 |
|
|
.proc_handler = &proc_dointvec,
|
| 747 |
|
|
},
|
| 748 |
|
|
#endif
|
| 749 |
|
|
#ifdef CONFIG_RT_MUTEXES
|
| 750 |
|
|
{
|
| 751 |
|
|
.ctl_name = KERN_MAX_LOCK_DEPTH,
|
| 752 |
|
|
.procname = "max_lock_depth",
|
| 753 |
|
|
.data = &max_lock_depth,
|
| 754 |
|
|
.maxlen = sizeof(int),
|
| 755 |
|
|
.mode = 0644,
|
| 756 |
|
|
.proc_handler = &proc_dointvec,
|
| 757 |
|
|
},
|
| 758 |
|
|
#endif
|
| 759 |
|
|
#ifdef CONFIG_PROC_FS
|
| 760 |
|
|
{
|
| 761 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 762 |
|
|
.procname = "maps_protect",
|
| 763 |
|
|
.data = &maps_protect,
|
| 764 |
|
|
.maxlen = sizeof(int),
|
| 765 |
|
|
.mode = 0644,
|
| 766 |
|
|
.proc_handler = &proc_dointvec,
|
| 767 |
|
|
},
|
| 768 |
|
|
#endif
|
| 769 |
|
|
{
|
| 770 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 771 |
|
|
.procname = "poweroff_cmd",
|
| 772 |
|
|
.data = &poweroff_cmd,
|
| 773 |
|
|
.maxlen = POWEROFF_CMD_PATH_LEN,
|
| 774 |
|
|
.mode = 0644,
|
| 775 |
|
|
.proc_handler = &proc_dostring,
|
| 776 |
|
|
.strategy = &sysctl_string,
|
| 777 |
|
|
},
|
| 778 |
|
|
/*
|
| 779 |
|
|
* NOTE: do not add new entries to this table unless you have read
|
| 780 |
|
|
* Documentation/sysctl/ctl_unnumbered.txt
|
| 781 |
|
|
*/
|
| 782 |
|
|
{ .ctl_name = 0 }
|
| 783 |
|
|
};
|
| 784 |
|
|
|
| 785 |
|
|
static struct ctl_table vm_table[] = {
|
| 786 |
|
|
{
|
| 787 |
|
|
.ctl_name = VM_OVERCOMMIT_MEMORY,
|
| 788 |
|
|
.procname = "overcommit_memory",
|
| 789 |
|
|
.data = &sysctl_overcommit_memory,
|
| 790 |
|
|
.maxlen = sizeof(sysctl_overcommit_memory),
|
| 791 |
|
|
.mode = 0644,
|
| 792 |
|
|
.proc_handler = &proc_dointvec,
|
| 793 |
|
|
},
|
| 794 |
|
|
{
|
| 795 |
|
|
.ctl_name = VM_PANIC_ON_OOM,
|
| 796 |
|
|
.procname = "panic_on_oom",
|
| 797 |
|
|
.data = &sysctl_panic_on_oom,
|
| 798 |
|
|
.maxlen = sizeof(sysctl_panic_on_oom),
|
| 799 |
|
|
.mode = 0644,
|
| 800 |
|
|
.proc_handler = &proc_dointvec,
|
| 801 |
|
|
},
|
| 802 |
|
|
{
|
| 803 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 804 |
|
|
.procname = "oom_kill_allocating_task",
|
| 805 |
|
|
.data = &sysctl_oom_kill_allocating_task,
|
| 806 |
|
|
.maxlen = sizeof(sysctl_oom_kill_allocating_task),
|
| 807 |
|
|
.mode = 0644,
|
| 808 |
|
|
.proc_handler = &proc_dointvec,
|
| 809 |
|
|
},
|
| 810 |
|
|
{
|
| 811 |
|
|
.ctl_name = VM_OVERCOMMIT_RATIO,
|
| 812 |
|
|
.procname = "overcommit_ratio",
|
| 813 |
|
|
.data = &sysctl_overcommit_ratio,
|
| 814 |
|
|
.maxlen = sizeof(sysctl_overcommit_ratio),
|
| 815 |
|
|
.mode = 0644,
|
| 816 |
|
|
.proc_handler = &proc_dointvec,
|
| 817 |
|
|
},
|
| 818 |
|
|
{
|
| 819 |
|
|
.ctl_name = VM_PAGE_CLUSTER,
|
| 820 |
|
|
.procname = "page-cluster",
|
| 821 |
|
|
.data = &page_cluster,
|
| 822 |
|
|
.maxlen = sizeof(int),
|
| 823 |
|
|
.mode = 0644,
|
| 824 |
|
|
.proc_handler = &proc_dointvec,
|
| 825 |
|
|
},
|
| 826 |
|
|
{
|
| 827 |
|
|
.ctl_name = VM_DIRTY_BACKGROUND,
|
| 828 |
|
|
.procname = "dirty_background_ratio",
|
| 829 |
|
|
.data = &dirty_background_ratio,
|
| 830 |
|
|
.maxlen = sizeof(dirty_background_ratio),
|
| 831 |
|
|
.mode = 0644,
|
| 832 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 833 |
|
|
.strategy = &sysctl_intvec,
|
| 834 |
|
|
.extra1 = &zero,
|
| 835 |
|
|
.extra2 = &one_hundred,
|
| 836 |
|
|
},
|
| 837 |
|
|
{
|
| 838 |
|
|
.ctl_name = VM_DIRTY_RATIO,
|
| 839 |
|
|
.procname = "dirty_ratio",
|
| 840 |
|
|
.data = &vm_dirty_ratio,
|
| 841 |
|
|
.maxlen = sizeof(vm_dirty_ratio),
|
| 842 |
|
|
.mode = 0644,
|
| 843 |
|
|
.proc_handler = &dirty_ratio_handler,
|
| 844 |
|
|
.strategy = &sysctl_intvec,
|
| 845 |
|
|
.extra1 = &zero,
|
| 846 |
|
|
.extra2 = &one_hundred,
|
| 847 |
|
|
},
|
| 848 |
|
|
{
|
| 849 |
|
|
.procname = "dirty_writeback_centisecs",
|
| 850 |
|
|
.data = &dirty_writeback_interval,
|
| 851 |
|
|
.maxlen = sizeof(dirty_writeback_interval),
|
| 852 |
|
|
.mode = 0644,
|
| 853 |
|
|
.proc_handler = &dirty_writeback_centisecs_handler,
|
| 854 |
|
|
},
|
| 855 |
|
|
{
|
| 856 |
|
|
.procname = "dirty_expire_centisecs",
|
| 857 |
|
|
.data = &dirty_expire_interval,
|
| 858 |
|
|
.maxlen = sizeof(dirty_expire_interval),
|
| 859 |
|
|
.mode = 0644,
|
| 860 |
|
|
.proc_handler = &proc_dointvec_userhz_jiffies,
|
| 861 |
|
|
},
|
| 862 |
|
|
{
|
| 863 |
|
|
.ctl_name = VM_NR_PDFLUSH_THREADS,
|
| 864 |
|
|
.procname = "nr_pdflush_threads",
|
| 865 |
|
|
.data = &nr_pdflush_threads,
|
| 866 |
|
|
.maxlen = sizeof nr_pdflush_threads,
|
| 867 |
|
|
.mode = 0444 /* read-only*/,
|
| 868 |
|
|
.proc_handler = &proc_dointvec,
|
| 869 |
|
|
},
|
| 870 |
|
|
{
|
| 871 |
|
|
.ctl_name = VM_SWAPPINESS,
|
| 872 |
|
|
.procname = "swappiness",
|
| 873 |
|
|
.data = &vm_swappiness,
|
| 874 |
|
|
.maxlen = sizeof(vm_swappiness),
|
| 875 |
|
|
.mode = 0644,
|
| 876 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 877 |
|
|
.strategy = &sysctl_intvec,
|
| 878 |
|
|
.extra1 = &zero,
|
| 879 |
|
|
.extra2 = &one_hundred,
|
| 880 |
|
|
},
|
| 881 |
|
|
#ifdef CONFIG_HUGETLB_PAGE
|
| 882 |
|
|
{
|
| 883 |
|
|
.procname = "nr_hugepages",
|
| 884 |
|
|
.data = &max_huge_pages,
|
| 885 |
|
|
.maxlen = sizeof(unsigned long),
|
| 886 |
|
|
.mode = 0644,
|
| 887 |
|
|
.proc_handler = &hugetlb_sysctl_handler,
|
| 888 |
|
|
.extra1 = (void *)&hugetlb_zero,
|
| 889 |
|
|
.extra2 = (void *)&hugetlb_infinity,
|
| 890 |
|
|
},
|
| 891 |
|
|
{
|
| 892 |
|
|
.ctl_name = VM_HUGETLB_GROUP,
|
| 893 |
|
|
.procname = "hugetlb_shm_group",
|
| 894 |
|
|
.data = &sysctl_hugetlb_shm_group,
|
| 895 |
|
|
.maxlen = sizeof(gid_t),
|
| 896 |
|
|
.mode = 0644,
|
| 897 |
|
|
.proc_handler = &proc_dointvec,
|
| 898 |
|
|
},
|
| 899 |
|
|
{
|
| 900 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 901 |
|
|
.procname = "hugepages_treat_as_movable",
|
| 902 |
|
|
.data = &hugepages_treat_as_movable,
|
| 903 |
|
|
.maxlen = sizeof(int),
|
| 904 |
|
|
.mode = 0644,
|
| 905 |
|
|
.proc_handler = &hugetlb_treat_movable_handler,
|
| 906 |
|
|
},
|
| 907 |
|
|
{
|
| 908 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 909 |
|
|
.procname = "nr_overcommit_hugepages",
|
| 910 |
|
|
.data = &nr_overcommit_huge_pages,
|
| 911 |
|
|
.maxlen = sizeof(nr_overcommit_huge_pages),
|
| 912 |
|
|
.mode = 0644,
|
| 913 |
|
|
.proc_handler = &proc_doulongvec_minmax,
|
| 914 |
|
|
},
|
| 915 |
|
|
#endif
|
| 916 |
|
|
{
|
| 917 |
|
|
.ctl_name = VM_LOWMEM_RESERVE_RATIO,
|
| 918 |
|
|
.procname = "lowmem_reserve_ratio",
|
| 919 |
|
|
.data = &sysctl_lowmem_reserve_ratio,
|
| 920 |
|
|
.maxlen = sizeof(sysctl_lowmem_reserve_ratio),
|
| 921 |
|
|
.mode = 0644,
|
| 922 |
|
|
.proc_handler = &lowmem_reserve_ratio_sysctl_handler,
|
| 923 |
|
|
.strategy = &sysctl_intvec,
|
| 924 |
|
|
},
|
| 925 |
|
|
{
|
| 926 |
|
|
.ctl_name = VM_DROP_PAGECACHE,
|
| 927 |
|
|
.procname = "drop_caches",
|
| 928 |
|
|
.data = &sysctl_drop_caches,
|
| 929 |
|
|
.maxlen = sizeof(int),
|
| 930 |
|
|
.mode = 0644,
|
| 931 |
|
|
.proc_handler = drop_caches_sysctl_handler,
|
| 932 |
|
|
.strategy = &sysctl_intvec,
|
| 933 |
|
|
},
|
| 934 |
|
|
{
|
| 935 |
|
|
.ctl_name = VM_MIN_FREE_KBYTES,
|
| 936 |
|
|
.procname = "min_free_kbytes",
|
| 937 |
|
|
.data = &min_free_kbytes,
|
| 938 |
|
|
.maxlen = sizeof(min_free_kbytes),
|
| 939 |
|
|
.mode = 0644,
|
| 940 |
|
|
.proc_handler = &min_free_kbytes_sysctl_handler,
|
| 941 |
|
|
.strategy = &sysctl_intvec,
|
| 942 |
|
|
.extra1 = &zero,
|
| 943 |
|
|
},
|
| 944 |
|
|
{
|
| 945 |
|
|
.ctl_name = VM_PERCPU_PAGELIST_FRACTION,
|
| 946 |
|
|
.procname = "percpu_pagelist_fraction",
|
| 947 |
|
|
.data = &percpu_pagelist_fraction,
|
| 948 |
|
|
.maxlen = sizeof(percpu_pagelist_fraction),
|
| 949 |
|
|
.mode = 0644,
|
| 950 |
|
|
.proc_handler = &percpu_pagelist_fraction_sysctl_handler,
|
| 951 |
|
|
.strategy = &sysctl_intvec,
|
| 952 |
|
|
.extra1 = &min_percpu_pagelist_fract,
|
| 953 |
|
|
},
|
| 954 |
|
|
#ifdef CONFIG_MMU
|
| 955 |
|
|
{
|
| 956 |
|
|
.ctl_name = VM_MAX_MAP_COUNT,
|
| 957 |
|
|
.procname = "max_map_count",
|
| 958 |
|
|
.data = &sysctl_max_map_count,
|
| 959 |
|
|
.maxlen = sizeof(sysctl_max_map_count),
|
| 960 |
|
|
.mode = 0644,
|
| 961 |
|
|
.proc_handler = &proc_dointvec
|
| 962 |
|
|
},
|
| 963 |
|
|
#endif
|
| 964 |
|
|
{
|
| 965 |
|
|
.ctl_name = VM_LAPTOP_MODE,
|
| 966 |
|
|
.procname = "laptop_mode",
|
| 967 |
|
|
.data = &laptop_mode,
|
| 968 |
|
|
.maxlen = sizeof(laptop_mode),
|
| 969 |
|
|
.mode = 0644,
|
| 970 |
|
|
.proc_handler = &proc_dointvec_jiffies,
|
| 971 |
|
|
.strategy = &sysctl_jiffies,
|
| 972 |
|
|
},
|
| 973 |
|
|
{
|
| 974 |
|
|
.ctl_name = VM_BLOCK_DUMP,
|
| 975 |
|
|
.procname = "block_dump",
|
| 976 |
|
|
.data = &block_dump,
|
| 977 |
|
|
.maxlen = sizeof(block_dump),
|
| 978 |
|
|
.mode = 0644,
|
| 979 |
|
|
.proc_handler = &proc_dointvec,
|
| 980 |
|
|
.strategy = &sysctl_intvec,
|
| 981 |
|
|
.extra1 = &zero,
|
| 982 |
|
|
},
|
| 983 |
|
|
{
|
| 984 |
|
|
.ctl_name = VM_VFS_CACHE_PRESSURE,
|
| 985 |
|
|
.procname = "vfs_cache_pressure",
|
| 986 |
|
|
.data = &sysctl_vfs_cache_pressure,
|
| 987 |
|
|
.maxlen = sizeof(sysctl_vfs_cache_pressure),
|
| 988 |
|
|
.mode = 0644,
|
| 989 |
|
|
.proc_handler = &proc_dointvec,
|
| 990 |
|
|
.strategy = &sysctl_intvec,
|
| 991 |
|
|
.extra1 = &zero,
|
| 992 |
|
|
},
|
| 993 |
|
|
#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
|
| 994 |
|
|
{
|
| 995 |
|
|
.ctl_name = VM_LEGACY_VA_LAYOUT,
|
| 996 |
|
|
.procname = "legacy_va_layout",
|
| 997 |
|
|
.data = &sysctl_legacy_va_layout,
|
| 998 |
|
|
.maxlen = sizeof(sysctl_legacy_va_layout),
|
| 999 |
|
|
.mode = 0644,
|
| 1000 |
|
|
.proc_handler = &proc_dointvec,
|
| 1001 |
|
|
.strategy = &sysctl_intvec,
|
| 1002 |
|
|
.extra1 = &zero,
|
| 1003 |
|
|
},
|
| 1004 |
|
|
#endif
|
| 1005 |
|
|
#ifdef CONFIG_NUMA
|
| 1006 |
|
|
{
|
| 1007 |
|
|
.ctl_name = VM_ZONE_RECLAIM_MODE,
|
| 1008 |
|
|
.procname = "zone_reclaim_mode",
|
| 1009 |
|
|
.data = &zone_reclaim_mode,
|
| 1010 |
|
|
.maxlen = sizeof(zone_reclaim_mode),
|
| 1011 |
|
|
.mode = 0644,
|
| 1012 |
|
|
.proc_handler = &proc_dointvec,
|
| 1013 |
|
|
.strategy = &sysctl_intvec,
|
| 1014 |
|
|
.extra1 = &zero,
|
| 1015 |
|
|
},
|
| 1016 |
|
|
{
|
| 1017 |
|
|
.ctl_name = VM_MIN_UNMAPPED,
|
| 1018 |
|
|
.procname = "min_unmapped_ratio",
|
| 1019 |
|
|
.data = &sysctl_min_unmapped_ratio,
|
| 1020 |
|
|
.maxlen = sizeof(sysctl_min_unmapped_ratio),
|
| 1021 |
|
|
.mode = 0644,
|
| 1022 |
|
|
.proc_handler = &sysctl_min_unmapped_ratio_sysctl_handler,
|
| 1023 |
|
|
.strategy = &sysctl_intvec,
|
| 1024 |
|
|
.extra1 = &zero,
|
| 1025 |
|
|
.extra2 = &one_hundred,
|
| 1026 |
|
|
},
|
| 1027 |
|
|
{
|
| 1028 |
|
|
.ctl_name = VM_MIN_SLAB,
|
| 1029 |
|
|
.procname = "min_slab_ratio",
|
| 1030 |
|
|
.data = &sysctl_min_slab_ratio,
|
| 1031 |
|
|
.maxlen = sizeof(sysctl_min_slab_ratio),
|
| 1032 |
|
|
.mode = 0644,
|
| 1033 |
|
|
.proc_handler = &sysctl_min_slab_ratio_sysctl_handler,
|
| 1034 |
|
|
.strategy = &sysctl_intvec,
|
| 1035 |
|
|
.extra1 = &zero,
|
| 1036 |
|
|
.extra2 = &one_hundred,
|
| 1037 |
|
|
},
|
| 1038 |
|
|
#endif
|
| 1039 |
|
|
#ifdef CONFIG_SMP
|
| 1040 |
|
|
{
|
| 1041 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 1042 |
|
|
.procname = "stat_interval",
|
| 1043 |
|
|
.data = &sysctl_stat_interval,
|
| 1044 |
|
|
.maxlen = sizeof(sysctl_stat_interval),
|
| 1045 |
|
|
.mode = 0644,
|
| 1046 |
|
|
.proc_handler = &proc_dointvec_jiffies,
|
| 1047 |
|
|
.strategy = &sysctl_jiffies,
|
| 1048 |
|
|
},
|
| 1049 |
|
|
#endif
|
| 1050 |
|
|
#ifdef CONFIG_SECURITY
|
| 1051 |
|
|
{
|
| 1052 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 1053 |
|
|
.procname = "mmap_min_addr",
|
| 1054 |
|
|
.data = &mmap_min_addr,
|
| 1055 |
|
|
.maxlen = sizeof(unsigned long),
|
| 1056 |
|
|
.mode = 0644,
|
| 1057 |
|
|
.proc_handler = &proc_doulongvec_minmax,
|
| 1058 |
|
|
},
|
| 1059 |
|
|
#endif
|
| 1060 |
|
|
#ifdef CONFIG_NUMA
|
| 1061 |
|
|
{
|
| 1062 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 1063 |
|
|
.procname = "numa_zonelist_order",
|
| 1064 |
|
|
.data = &numa_zonelist_order,
|
| 1065 |
|
|
.maxlen = NUMA_ZONELIST_ORDER_LEN,
|
| 1066 |
|
|
.mode = 0644,
|
| 1067 |
|
|
.proc_handler = &numa_zonelist_order_handler,
|
| 1068 |
|
|
.strategy = &sysctl_string,
|
| 1069 |
|
|
},
|
| 1070 |
|
|
#endif
|
| 1071 |
|
|
#if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \
|
| 1072 |
|
|
(defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL))
|
| 1073 |
|
|
{
|
| 1074 |
|
|
.ctl_name = VM_VDSO_ENABLED,
|
| 1075 |
|
|
.procname = "vdso_enabled",
|
| 1076 |
|
|
.data = &vdso_enabled,
|
| 1077 |
|
|
.maxlen = sizeof(vdso_enabled),
|
| 1078 |
|
|
.mode = 0644,
|
| 1079 |
|
|
.proc_handler = &proc_dointvec,
|
| 1080 |
|
|
.strategy = &sysctl_intvec,
|
| 1081 |
|
|
.extra1 = &zero,
|
| 1082 |
|
|
},
|
| 1083 |
|
|
#endif
|
| 1084 |
|
|
/*
|
| 1085 |
|
|
* NOTE: do not add new entries to this table unless you have read
|
| 1086 |
|
|
* Documentation/sysctl/ctl_unnumbered.txt
|
| 1087 |
|
|
*/
|
| 1088 |
|
|
{ .ctl_name = 0 }
|
| 1089 |
|
|
};
|
| 1090 |
|
|
|
| 1091 |
|
|
#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
|
| 1092 |
|
|
static struct ctl_table binfmt_misc_table[] = {
|
| 1093 |
|
|
{ .ctl_name = 0 }
|
| 1094 |
|
|
};
|
| 1095 |
|
|
#endif
|
| 1096 |
|
|
|
| 1097 |
|
|
static struct ctl_table fs_table[] = {
|
| 1098 |
|
|
{
|
| 1099 |
|
|
.ctl_name = FS_NRINODE,
|
| 1100 |
|
|
.procname = "inode-nr",
|
| 1101 |
|
|
.data = &inodes_stat,
|
| 1102 |
|
|
.maxlen = 2*sizeof(int),
|
| 1103 |
|
|
.mode = 0444,
|
| 1104 |
|
|
.proc_handler = &proc_dointvec,
|
| 1105 |
|
|
},
|
| 1106 |
|
|
{
|
| 1107 |
|
|
.ctl_name = FS_STATINODE,
|
| 1108 |
|
|
.procname = "inode-state",
|
| 1109 |
|
|
.data = &inodes_stat,
|
| 1110 |
|
|
.maxlen = 7*sizeof(int),
|
| 1111 |
|
|
.mode = 0444,
|
| 1112 |
|
|
.proc_handler = &proc_dointvec,
|
| 1113 |
|
|
},
|
| 1114 |
|
|
{
|
| 1115 |
|
|
.procname = "file-nr",
|
| 1116 |
|
|
.data = &files_stat,
|
| 1117 |
|
|
.maxlen = 3*sizeof(int),
|
| 1118 |
|
|
.mode = 0444,
|
| 1119 |
|
|
.proc_handler = &proc_nr_files,
|
| 1120 |
|
|
},
|
| 1121 |
|
|
{
|
| 1122 |
|
|
.ctl_name = FS_MAXFILE,
|
| 1123 |
|
|
.procname = "file-max",
|
| 1124 |
|
|
.data = &files_stat.max_files,
|
| 1125 |
|
|
.maxlen = sizeof(int),
|
| 1126 |
|
|
.mode = 0644,
|
| 1127 |
|
|
.proc_handler = &proc_dointvec,
|
| 1128 |
|
|
},
|
| 1129 |
|
|
{
|
| 1130 |
|
|
.ctl_name = FS_DENTRY,
|
| 1131 |
|
|
.procname = "dentry-state",
|
| 1132 |
|
|
.data = &dentry_stat,
|
| 1133 |
|
|
.maxlen = 6*sizeof(int),
|
| 1134 |
|
|
.mode = 0444,
|
| 1135 |
|
|
.proc_handler = &proc_dointvec,
|
| 1136 |
|
|
},
|
| 1137 |
|
|
{
|
| 1138 |
|
|
.ctl_name = FS_OVERFLOWUID,
|
| 1139 |
|
|
.procname = "overflowuid",
|
| 1140 |
|
|
.data = &fs_overflowuid,
|
| 1141 |
|
|
.maxlen = sizeof(int),
|
| 1142 |
|
|
.mode = 0644,
|
| 1143 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 1144 |
|
|
.strategy = &sysctl_intvec,
|
| 1145 |
|
|
.extra1 = &minolduid,
|
| 1146 |
|
|
.extra2 = &maxolduid,
|
| 1147 |
|
|
},
|
| 1148 |
|
|
{
|
| 1149 |
|
|
.ctl_name = FS_OVERFLOWGID,
|
| 1150 |
|
|
.procname = "overflowgid",
|
| 1151 |
|
|
.data = &fs_overflowgid,
|
| 1152 |
|
|
.maxlen = sizeof(int),
|
| 1153 |
|
|
.mode = 0644,
|
| 1154 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 1155 |
|
|
.strategy = &sysctl_intvec,
|
| 1156 |
|
|
.extra1 = &minolduid,
|
| 1157 |
|
|
.extra2 = &maxolduid,
|
| 1158 |
|
|
},
|
| 1159 |
|
|
{
|
| 1160 |
|
|
.ctl_name = FS_LEASES,
|
| 1161 |
|
|
.procname = "leases-enable",
|
| 1162 |
|
|
.data = &leases_enable,
|
| 1163 |
|
|
.maxlen = sizeof(int),
|
| 1164 |
|
|
.mode = 0644,
|
| 1165 |
|
|
.proc_handler = &proc_dointvec,
|
| 1166 |
|
|
},
|
| 1167 |
|
|
#ifdef CONFIG_DNOTIFY
|
| 1168 |
|
|
{
|
| 1169 |
|
|
.ctl_name = FS_DIR_NOTIFY,
|
| 1170 |
|
|
.procname = "dir-notify-enable",
|
| 1171 |
|
|
.data = &dir_notify_enable,
|
| 1172 |
|
|
.maxlen = sizeof(int),
|
| 1173 |
|
|
.mode = 0644,
|
| 1174 |
|
|
.proc_handler = &proc_dointvec,
|
| 1175 |
|
|
},
|
| 1176 |
|
|
#endif
|
| 1177 |
|
|
#ifdef CONFIG_MMU
|
| 1178 |
|
|
{
|
| 1179 |
|
|
.ctl_name = FS_LEASE_TIME,
|
| 1180 |
|
|
.procname = "lease-break-time",
|
| 1181 |
|
|
.data = &lease_break_time,
|
| 1182 |
|
|
.maxlen = sizeof(int),
|
| 1183 |
|
|
.mode = 0644,
|
| 1184 |
|
|
.proc_handler = &proc_dointvec_minmax,
|
| 1185 |
|
|
.strategy = &sysctl_intvec,
|
| 1186 |
|
|
.extra1 = &zero,
|
| 1187 |
|
|
.extra2 = &two,
|
| 1188 |
|
|
},
|
| 1189 |
|
|
{
|
| 1190 |
|
|
.procname = "aio-nr",
|
| 1191 |
|
|
.data = &aio_nr,
|
| 1192 |
|
|
.maxlen = sizeof(aio_nr),
|
| 1193 |
|
|
.mode = 0444,
|
| 1194 |
|
|
.proc_handler = &proc_doulongvec_minmax,
|
| 1195 |
|
|
},
|
| 1196 |
|
|
{
|
| 1197 |
|
|
.procname = "aio-max-nr",
|
| 1198 |
|
|
.data = &aio_max_nr,
|
| 1199 |
|
|
.maxlen = sizeof(aio_max_nr),
|
| 1200 |
|
|
.mode = 0644,
|
| 1201 |
|
|
.proc_handler = &proc_doulongvec_minmax,
|
| 1202 |
|
|
},
|
| 1203 |
|
|
#ifdef CONFIG_INOTIFY_USER
|
| 1204 |
|
|
{
|
| 1205 |
|
|
.ctl_name = FS_INOTIFY,
|
| 1206 |
|
|
.procname = "inotify",
|
| 1207 |
|
|
.mode = 0555,
|
| 1208 |
|
|
.child = inotify_table,
|
| 1209 |
|
|
},
|
| 1210 |
|
|
#endif
|
| 1211 |
|
|
#endif
|
| 1212 |
|
|
{
|
| 1213 |
|
|
.ctl_name = KERN_SETUID_DUMPABLE,
|
| 1214 |
|
|
.procname = "suid_dumpable",
|
| 1215 |
|
|
.data = &suid_dumpable,
|
| 1216 |
|
|
.maxlen = sizeof(int),
|
| 1217 |
|
|
.mode = 0644,
|
| 1218 |
|
|
.proc_handler = &proc_dointvec,
|
| 1219 |
|
|
},
|
| 1220 |
|
|
#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
|
| 1221 |
|
|
{
|
| 1222 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 1223 |
|
|
.procname = "binfmt_misc",
|
| 1224 |
|
|
.mode = 0555,
|
| 1225 |
|
|
.child = binfmt_misc_table,
|
| 1226 |
|
|
},
|
| 1227 |
|
|
#endif
|
| 1228 |
|
|
/*
|
| 1229 |
|
|
* NOTE: do not add new entries to this table unless you have read
|
| 1230 |
|
|
* Documentation/sysctl/ctl_unnumbered.txt
|
| 1231 |
|
|
*/
|
| 1232 |
|
|
{ .ctl_name = 0 }
|
| 1233 |
|
|
};
|
| 1234 |
|
|
|
| 1235 |
|
|
static struct ctl_table debug_table[] = {
|
| 1236 |
|
|
#if defined(CONFIG_X86) || defined(CONFIG_PPC)
|
| 1237 |
|
|
{
|
| 1238 |
|
|
.ctl_name = CTL_UNNUMBERED,
|
| 1239 |
|
|
.procname = "exception-trace",
|
| 1240 |
|
|
.data = &show_unhandled_signals,
|
| 1241 |
|
|
.maxlen = sizeof(int),
|
| 1242 |
|
|
.mode = 0644,
|
| 1243 |
|
|
.proc_handler = proc_dointvec
|
| 1244 |
|
|
},
|
| 1245 |
|
|
#endif
|
| 1246 |
|
|
{ .ctl_name = 0 }
|
| 1247 |
|
|
};
|
| 1248 |
|
|
|
| 1249 |
|
|
static struct ctl_table dev_table[] = {
|
| 1250 |
|
|
{ .ctl_name = 0 }
|
| 1251 |
|
|
};
|
| 1252 |
|
|
|
| 1253 |
|
|
static DEFINE_SPINLOCK(sysctl_lock);
|
| 1254 |
|
|
|
| 1255 |
|
|
/* called under sysctl_lock */
|
| 1256 |
|
|
static int use_table(struct ctl_table_header *p)
|
| 1257 |
|
|
{
|
| 1258 |
|
|
if (unlikely(p->unregistering))
|
| 1259 |
|
|
return 0;
|
| 1260 |
|
|
p->used++;
|
| 1261 |
|
|
return 1;
|
| 1262 |
|
|
}
|
| 1263 |
|
|
|
| 1264 |
|
|
/* called under sysctl_lock */
|
| 1265 |
|
|
static void unuse_table(struct ctl_table_header *p)
|
| 1266 |
|
|
{
|
| 1267 |
|
|
if (!--p->used)
|
| 1268 |
|
|
if (unlikely(p->unregistering))
|
| 1269 |
|
|
complete(p->unregistering);
|
| 1270 |
|
|
}
|
| 1271 |
|
|
|
| 1272 |
|
|
/* called under sysctl_lock, will reacquire if has to wait */
|
| 1273 |
|
|
static void start_unregistering(struct ctl_table_header *p)
|
| 1274 |
|
|
{
|
| 1275 |
|
|
/*
|
| 1276 |
|
|
* if p->used is 0, nobody will ever touch that entry again;
|
| 1277 |
|
|
* we'll eliminate all paths to it before dropping sysctl_lock
|
| 1278 |
|
|
*/
|
| 1279 |
|
|
if (unlikely(p->used)) {
|
| 1280 |
|
|
struct completion wait;
|
| 1281 |
|
|
init_completion(&wait);
|
| 1282 |
|
|
p->unregistering = &wait;
|
| 1283 |
|
|
spin_unlock(&sysctl_lock);
|
| 1284 |
|
|
wait_for_completion(&wait);
|
| 1285 |
|
|
spin_lock(&sysctl_lock);
|
| 1286 |
|
|
}
|
| 1287 |
|
|
/*
|
| 1288 |
|
|
* do not remove from the list until nobody holds it; walking the
|
| 1289 |
|
|
* list in do_sysctl() relies on that.
|
| 1290 |
|
|
*/
|
| 1291 |
|
|
list_del_init(&p->ctl_entry);
|
| 1292 |
|
|
}
|
| 1293 |
|
|
|
| 1294 |
|
|
void sysctl_head_finish(struct ctl_table_header *head)
|
| 1295 |
|
|
{
|
| 1296 |
|
|
if (!head)
|
| 1297 |
|
|
return;
|
| 1298 |
|
|
spin_lock(&sysctl_lock);
|
| 1299 |
|
|
unuse_table(head);
|
| 1300 |
|
|
spin_unlock(&sysctl_lock);
|
| 1301 |
|
|
}
|
| 1302 |
|
|
|
| 1303 |
|
|
struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev)
|
| 1304 |
|
|
{
|
| 1305 |
|
|
struct ctl_table_header *head;
|
| 1306 |
|
|
struct list_head *tmp;
|
| 1307 |
|
|
spin_lock(&sysctl_lock);
|
| 1308 |
|
|
if (prev) {
|
| 1309 |
|
|
tmp = &prev->ctl_entry;
|
| 1310 |
|
|
unuse_table(prev);
|
| 1311 |
|
|
goto next;
|
| 1312 |
|
|
}
|
| 1313 |
|
|
tmp = &root_table_header.ctl_entry;
|
| 1314 |
|
|
for (;;) {
|
| 1315 |
|
|
head = list_entry(tmp, struct ctl_table_header, ctl_entry);
|
| 1316 |
|
|
|
| 1317 |
|
|
if (!use_table(head))
|
| 1318 |
|
|
goto next;
|
| 1319 |
|
|
spin_unlock(&sysctl_lock);
|
| 1320 |
|
|
return head;
|
| 1321 |
|
|
next:
|
| 1322 |
|
|
tmp = tmp->next;
|
| 1323 |
|
|
if (tmp == &root_table_header.ctl_entry)
|
| 1324 |
|
|
break;
|
| 1325 |
|
|
}
|
| 1326 |
|
|
spin_unlock(&sysctl_lock);
|
| 1327 |
|
|
return NULL;
|
| 1328 |
|
|
}
|
| 1329 |
|
|
|
| 1330 |
|
|
#ifdef CONFIG_SYSCTL_SYSCALL
|
| 1331 |
|
|
int do_sysctl(int __user *name, int nlen, void __user *oldval, size_t __user *oldlenp,
|
| 1332 |
|
|
void __user *newval, size_t newlen)
|
| 1333 |
|
|
{
|
| 1334 |
|
|
struct ctl_table_header *head;
|
| 1335 |
|
|
int error = -ENOTDIR;
|
| 1336 |
|
|
|
| 1337 |
|
|
if (nlen <= 0 || nlen >= CTL_MAXNAME)
|
| 1338 |
|
|
return -ENOTDIR;
|
| 1339 |
|
|
if (oldval) {
|
| 1340 |
|
|
int old_len;
|
| 1341 |
|
|
if (!oldlenp || get_user(old_len, oldlenp))
|
| 1342 |
|
|
return -EFAULT;
|
| 1343 |
|
|
}
|
| 1344 |
|
|
|
| 1345 |
|
|
for (head = sysctl_head_next(NULL); head;
|
| 1346 |
|
|
head = sysctl_head_next(head)) {
|
| 1347 |
|
|
error = parse_table(name, nlen, oldval, oldlenp,
|
| 1348 |
|
|
newval, newlen, head->ctl_table);
|
| 1349 |
|
|
if (error != -ENOTDIR) {
|
| 1350 |
|
|
sysctl_head_finish(head);
|
| 1351 |
|
|
break;
|
| 1352 |
|
|
}
|
| 1353 |
|
|
}
|
| 1354 |
|
|
return error;
|
| 1355 |
|
|
}
|
| 1356 |
|
|
|
| 1357 |
|
|
asmlinkage long sys_sysctl(struct __sysctl_args __user *args)
|
| 1358 |
|
|
{
|
| 1359 |
|
|
struct __sysctl_args tmp;
|
| 1360 |
|
|
int error;
|
| 1361 |
|
|
|
| 1362 |
|
|
if (copy_from_user(&tmp, args, sizeof(tmp)))
|
| 1363 |
|
|
return -EFAULT;
|
| 1364 |
|
|
|
| 1365 |
|
|
error = deprecated_sysctl_warning(&tmp);
|
| 1366 |
|
|
if (error)
|
| 1367 |
|
|
goto out;
|
| 1368 |
|
|
|
| 1369 |
|
|
lock_kernel();
|
| 1370 |
|
|
error = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, tmp.oldlenp,
|
| 1371 |
|
|
tmp.newval, tmp.newlen);
|
| 1372 |
|
|
unlock_kernel();
|
| 1373 |
|
|
out:
|
| 1374 |
|
|
return error;
|
| 1375 |
|
|
}
|
| 1376 |
|
|
#endif /* CONFIG_SYSCTL_SYSCALL */
|
| 1377 |
|
|
|
| 1378 |
|
|
/*
|
| 1379 |
|
|
* sysctl_perm does NOT grant the superuser all rights automatically, because
|
| 1380 |
|
|
* some sysctl variables are readonly even to root.
|
| 1381 |
|
|
*/
|
| 1382 |
|
|
|
| 1383 |
|
|
static int test_perm(int mode, int op)
|
| 1384 |
|
|
{
|
| 1385 |
|
|
if (!current->euid)
|
| 1386 |
|
|
mode >>= 6;
|
| 1387 |
|
|
else if (in_egroup_p(0))
|
| 1388 |
|
|
mode >>= 3;
|
| 1389 |
|
|
if ((mode & op & 0007) == op)
|
| 1390 |
|
|
return 0;
|
| 1391 |
|
|
return -EACCES;
|
| 1392 |
|
|
}
|
| 1393 |
|
|
|
| 1394 |
|
|
int sysctl_perm(struct ctl_table *table, int op)
|
| 1395 |
|
|
{
|
| 1396 |
|
|
int error;
|
| 1397 |
|
|
error = security_sysctl(table, op);
|
| 1398 |
|
|
if (error)
|
| 1399 |
|
|
return error;
|
| 1400 |
|
|
return test_perm(table->mode, op);
|
| 1401 |
|
|
}
|
| 1402 |
|
|
|
| 1403 |
|
|
#ifdef CONFIG_SYSCTL_SYSCALL
|
| 1404 |
|
|
static int parse_table(int __user *name, int nlen,
|
| 1405 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 1406 |
|
|
void __user *newval, size_t newlen,
|
| 1407 |
|
|
struct ctl_table *table)
|
| 1408 |
|
|
{
|
| 1409 |
|
|
int n;
|
| 1410 |
|
|
repeat:
|
| 1411 |
|
|
if (!nlen)
|
| 1412 |
|
|
return -ENOTDIR;
|
| 1413 |
|
|
if (get_user(n, name))
|
| 1414 |
|
|
return -EFAULT;
|
| 1415 |
|
|
for ( ; table->ctl_name || table->procname; table++) {
|
| 1416 |
|
|
if (!table->ctl_name)
|
| 1417 |
|
|
continue;
|
| 1418 |
|
|
if (n == table->ctl_name) {
|
| 1419 |
|
|
int error;
|
| 1420 |
|
|
if (table->child) {
|
| 1421 |
|
|
if (sysctl_perm(table, 001))
|
| 1422 |
|
|
return -EPERM;
|
| 1423 |
|
|
name++;
|
| 1424 |
|
|
nlen--;
|
| 1425 |
|
|
table = table->child;
|
| 1426 |
|
|
goto repeat;
|
| 1427 |
|
|
}
|
| 1428 |
|
|
error = do_sysctl_strategy(table, name, nlen,
|
| 1429 |
|
|
oldval, oldlenp,
|
| 1430 |
|
|
newval, newlen);
|
| 1431 |
|
|
return error;
|
| 1432 |
|
|
}
|
| 1433 |
|
|
}
|
| 1434 |
|
|
return -ENOTDIR;
|
| 1435 |
|
|
}
|
| 1436 |
|
|
|
| 1437 |
|
|
/* Perform the actual read/write of a sysctl table entry. */
|
| 1438 |
|
|
int do_sysctl_strategy (struct ctl_table *table,
|
| 1439 |
|
|
int __user *name, int nlen,
|
| 1440 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 1441 |
|
|
void __user *newval, size_t newlen)
|
| 1442 |
|
|
{
|
| 1443 |
|
|
int op = 0, rc;
|
| 1444 |
|
|
|
| 1445 |
|
|
if (oldval)
|
| 1446 |
|
|
op |= 004;
|
| 1447 |
|
|
if (newval)
|
| 1448 |
|
|
op |= 002;
|
| 1449 |
|
|
if (sysctl_perm(table, op))
|
| 1450 |
|
|
return -EPERM;
|
| 1451 |
|
|
|
| 1452 |
|
|
if (table->strategy) {
|
| 1453 |
|
|
rc = table->strategy(table, name, nlen, oldval, oldlenp,
|
| 1454 |
|
|
newval, newlen);
|
| 1455 |
|
|
if (rc < 0)
|
| 1456 |
|
|
return rc;
|
| 1457 |
|
|
if (rc > 0)
|
| 1458 |
|
|
return 0;
|
| 1459 |
|
|
}
|
| 1460 |
|
|
|
| 1461 |
|
|
/* If there is no strategy routine, or if the strategy returns
|
| 1462 |
|
|
* zero, proceed with automatic r/w */
|
| 1463 |
|
|
if (table->data && table->maxlen) {
|
| 1464 |
|
|
rc = sysctl_data(table, name, nlen, oldval, oldlenp,
|
| 1465 |
|
|
newval, newlen);
|
| 1466 |
|
|
if (rc < 0)
|
| 1467 |
|
|
return rc;
|
| 1468 |
|
|
}
|
| 1469 |
|
|
return 0;
|
| 1470 |
|
|
}
|
| 1471 |
|
|
#endif /* CONFIG_SYSCTL_SYSCALL */
|
| 1472 |
|
|
|
| 1473 |
|
|
static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table)
|
| 1474 |
|
|
{
|
| 1475 |
|
|
for (; table->ctl_name || table->procname; table++) {
|
| 1476 |
|
|
table->parent = parent;
|
| 1477 |
|
|
if (table->child)
|
| 1478 |
|
|
sysctl_set_parent(table, table->child);
|
| 1479 |
|
|
}
|
| 1480 |
|
|
}
|
| 1481 |
|
|
|
| 1482 |
|
|
static __init int sysctl_init(void)
|
| 1483 |
|
|
{
|
| 1484 |
|
|
int err;
|
| 1485 |
|
|
sysctl_set_parent(NULL, root_table);
|
| 1486 |
|
|
err = sysctl_check_table(root_table);
|
| 1487 |
|
|
return 0;
|
| 1488 |
|
|
}
|
| 1489 |
|
|
|
| 1490 |
|
|
core_initcall(sysctl_init);
|
| 1491 |
|
|
|
| 1492 |
|
|
/**
|
| 1493 |
|
|
* register_sysctl_table - register a sysctl hierarchy
|
| 1494 |
|
|
* @table: the top-level table structure
|
| 1495 |
|
|
*
|
| 1496 |
|
|
* Register a sysctl table hierarchy. @table should be a filled in ctl_table
|
| 1497 |
|
|
* array. An entry with a ctl_name of 0 terminates the table.
|
| 1498 |
|
|
*
|
| 1499 |
|
|
* The members of the &struct ctl_table structure are used as follows:
|
| 1500 |
|
|
*
|
| 1501 |
|
|
* ctl_name - This is the numeric sysctl value used by sysctl(2). The number
|
| 1502 |
|
|
* must be unique within that level of sysctl
|
| 1503 |
|
|
*
|
| 1504 |
|
|
* procname - the name of the sysctl file under /proc/sys. Set to %NULL to not
|
| 1505 |
|
|
* enter a sysctl file
|
| 1506 |
|
|
*
|
| 1507 |
|
|
* data - a pointer to data for use by proc_handler
|
| 1508 |
|
|
*
|
| 1509 |
|
|
* maxlen - the maximum size in bytes of the data
|
| 1510 |
|
|
*
|
| 1511 |
|
|
* mode - the file permissions for the /proc/sys file, and for sysctl(2)
|
| 1512 |
|
|
*
|
| 1513 |
|
|
* child - a pointer to the child sysctl table if this entry is a directory, or
|
| 1514 |
|
|
* %NULL.
|
| 1515 |
|
|
*
|
| 1516 |
|
|
* proc_handler - the text handler routine (described below)
|
| 1517 |
|
|
*
|
| 1518 |
|
|
* strategy - the strategy routine (described below)
|
| 1519 |
|
|
*
|
| 1520 |
|
|
* de - for internal use by the sysctl routines
|
| 1521 |
|
|
*
|
| 1522 |
|
|
* extra1, extra2 - extra pointers usable by the proc handler routines
|
| 1523 |
|
|
*
|
| 1524 |
|
|
* Leaf nodes in the sysctl tree will be represented by a single file
|
| 1525 |
|
|
* under /proc; non-leaf nodes will be represented by directories.
|
| 1526 |
|
|
*
|
| 1527 |
|
|
* sysctl(2) can automatically manage read and write requests through
|
| 1528 |
|
|
* the sysctl table. The data and maxlen fields of the ctl_table
|
| 1529 |
|
|
* struct enable minimal validation of the values being written to be
|
| 1530 |
|
|
* performed, and the mode field allows minimal authentication.
|
| 1531 |
|
|
*
|
| 1532 |
|
|
* More sophisticated management can be enabled by the provision of a
|
| 1533 |
|
|
* strategy routine with the table entry. This will be called before
|
| 1534 |
|
|
* any automatic read or write of the data is performed.
|
| 1535 |
|
|
*
|
| 1536 |
|
|
* The strategy routine may return
|
| 1537 |
|
|
*
|
| 1538 |
|
|
* < 0 - Error occurred (error is passed to user process)
|
| 1539 |
|
|
*
|
| 1540 |
|
|
* 0 - OK - proceed with automatic read or write.
|
| 1541 |
|
|
*
|
| 1542 |
|
|
* > 0 - OK - read or write has been done by the strategy routine, so
|
| 1543 |
|
|
* return immediately.
|
| 1544 |
|
|
*
|
| 1545 |
|
|
* There must be a proc_handler routine for any terminal nodes
|
| 1546 |
|
|
* mirrored under /proc/sys (non-terminals are handled by a built-in
|
| 1547 |
|
|
* directory handler). Several default handlers are available to
|
| 1548 |
|
|
* cover common cases -
|
| 1549 |
|
|
*
|
| 1550 |
|
|
* proc_dostring(), proc_dointvec(), proc_dointvec_jiffies(),
|
| 1551 |
|
|
* proc_dointvec_userhz_jiffies(), proc_dointvec_minmax(),
|
| 1552 |
|
|
* proc_doulongvec_ms_jiffies_minmax(), proc_doulongvec_minmax()
|
| 1553 |
|
|
*
|
| 1554 |
|
|
* It is the handler's job to read the input buffer from user memory
|
| 1555 |
|
|
* and process it. The handler should return 0 on success.
|
| 1556 |
|
|
*
|
| 1557 |
|
|
* This routine returns %NULL on a failure to register, and a pointer
|
| 1558 |
|
|
* to the table header on success.
|
| 1559 |
|
|
*/
|
| 1560 |
|
|
struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
|
| 1561 |
|
|
{
|
| 1562 |
|
|
struct ctl_table_header *tmp;
|
| 1563 |
|
|
tmp = kmalloc(sizeof(struct ctl_table_header), GFP_KERNEL);
|
| 1564 |
|
|
if (!tmp)
|
| 1565 |
|
|
return NULL;
|
| 1566 |
|
|
tmp->ctl_table = table;
|
| 1567 |
|
|
INIT_LIST_HEAD(&tmp->ctl_entry);
|
| 1568 |
|
|
tmp->used = 0;
|
| 1569 |
|
|
tmp->unregistering = NULL;
|
| 1570 |
|
|
sysctl_set_parent(NULL, table);
|
| 1571 |
|
|
if (sysctl_check_table(tmp->ctl_table)) {
|
| 1572 |
|
|
kfree(tmp);
|
| 1573 |
|
|
return NULL;
|
| 1574 |
|
|
}
|
| 1575 |
|
|
spin_lock(&sysctl_lock);
|
| 1576 |
|
|
list_add_tail(&tmp->ctl_entry, &root_table_header.ctl_entry);
|
| 1577 |
|
|
spin_unlock(&sysctl_lock);
|
| 1578 |
|
|
return tmp;
|
| 1579 |
|
|
}
|
| 1580 |
|
|
|
| 1581 |
|
|
/**
|
| 1582 |
|
|
* unregister_sysctl_table - unregister a sysctl table hierarchy
|
| 1583 |
|
|
* @header: the header returned from register_sysctl_table
|
| 1584 |
|
|
*
|
| 1585 |
|
|
* Unregisters the sysctl table and all children. proc entries may not
|
| 1586 |
|
|
* actually be removed until they are no longer used by anyone.
|
| 1587 |
|
|
*/
|
| 1588 |
|
|
void unregister_sysctl_table(struct ctl_table_header * header)
|
| 1589 |
|
|
{
|
| 1590 |
|
|
might_sleep();
|
| 1591 |
|
|
|
| 1592 |
|
|
if (header == NULL)
|
| 1593 |
|
|
return;
|
| 1594 |
|
|
|
| 1595 |
|
|
spin_lock(&sysctl_lock);
|
| 1596 |
|
|
start_unregistering(header);
|
| 1597 |
|
|
spin_unlock(&sysctl_lock);
|
| 1598 |
|
|
kfree(header);
|
| 1599 |
|
|
}
|
| 1600 |
|
|
|
| 1601 |
|
|
#else /* !CONFIG_SYSCTL */
|
| 1602 |
|
|
struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
|
| 1603 |
|
|
{
|
| 1604 |
|
|
return NULL;
|
| 1605 |
|
|
}
|
| 1606 |
|
|
|
| 1607 |
|
|
void unregister_sysctl_table(struct ctl_table_header * table)
|
| 1608 |
|
|
{
|
| 1609 |
|
|
}
|
| 1610 |
|
|
|
| 1611 |
|
|
#endif /* CONFIG_SYSCTL */
|
| 1612 |
|
|
|
| 1613 |
|
|
/*
|
| 1614 |
|
|
* /proc/sys support
|
| 1615 |
|
|
*/
|
| 1616 |
|
|
|
| 1617 |
|
|
#ifdef CONFIG_PROC_SYSCTL
|
| 1618 |
|
|
|
| 1619 |
|
|
static int _proc_do_string(void* data, int maxlen, int write,
|
| 1620 |
|
|
struct file *filp, void __user *buffer,
|
| 1621 |
|
|
size_t *lenp, loff_t *ppos)
|
| 1622 |
|
|
{
|
| 1623 |
|
|
size_t len;
|
| 1624 |
|
|
char __user *p;
|
| 1625 |
|
|
char c;
|
| 1626 |
|
|
|
| 1627 |
|
|
if (!data || !maxlen || !*lenp) {
|
| 1628 |
|
|
*lenp = 0;
|
| 1629 |
|
|
return 0;
|
| 1630 |
|
|
}
|
| 1631 |
|
|
|
| 1632 |
|
|
if (write) {
|
| 1633 |
|
|
len = 0;
|
| 1634 |
|
|
p = buffer;
|
| 1635 |
|
|
while (len < *lenp) {
|
| 1636 |
|
|
if (get_user(c, p++))
|
| 1637 |
|
|
return -EFAULT;
|
| 1638 |
|
|
if (c == 0 || c == '\n')
|
| 1639 |
|
|
break;
|
| 1640 |
|
|
len++;
|
| 1641 |
|
|
}
|
| 1642 |
|
|
if (len >= maxlen)
|
| 1643 |
|
|
len = maxlen-1;
|
| 1644 |
|
|
if(copy_from_user(data, buffer, len))
|
| 1645 |
|
|
return -EFAULT;
|
| 1646 |
|
|
((char *) data)[len] = 0;
|
| 1647 |
|
|
*ppos += *lenp;
|
| 1648 |
|
|
} else {
|
| 1649 |
|
|
len = strlen(data);
|
| 1650 |
|
|
if (len > maxlen)
|
| 1651 |
|
|
len = maxlen;
|
| 1652 |
|
|
|
| 1653 |
|
|
if (*ppos > len) {
|
| 1654 |
|
|
*lenp = 0;
|
| 1655 |
|
|
return 0;
|
| 1656 |
|
|
}
|
| 1657 |
|
|
|
| 1658 |
|
|
data += *ppos;
|
| 1659 |
|
|
len -= *ppos;
|
| 1660 |
|
|
|
| 1661 |
|
|
if (len > *lenp)
|
| 1662 |
|
|
len = *lenp;
|
| 1663 |
|
|
if (len)
|
| 1664 |
|
|
if(copy_to_user(buffer, data, len))
|
| 1665 |
|
|
return -EFAULT;
|
| 1666 |
|
|
if (len < *lenp) {
|
| 1667 |
|
|
if(put_user('\n', ((char __user *) buffer) + len))
|
| 1668 |
|
|
return -EFAULT;
|
| 1669 |
|
|
len++;
|
| 1670 |
|
|
}
|
| 1671 |
|
|
*lenp = len;
|
| 1672 |
|
|
*ppos += len;
|
| 1673 |
|
|
}
|
| 1674 |
|
|
return 0;
|
| 1675 |
|
|
}
|
| 1676 |
|
|
|
| 1677 |
|
|
/**
|
| 1678 |
|
|
* proc_dostring - read a string sysctl
|
| 1679 |
|
|
* @table: the sysctl table
|
| 1680 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 1681 |
|
|
* @filp: the file structure
|
| 1682 |
|
|
* @buffer: the user buffer
|
| 1683 |
|
|
* @lenp: the size of the user buffer
|
| 1684 |
|
|
* @ppos: file position
|
| 1685 |
|
|
*
|
| 1686 |
|
|
* Reads/writes a string from/to the user buffer. If the kernel
|
| 1687 |
|
|
* buffer provided is not large enough to hold the string, the
|
| 1688 |
|
|
* string is truncated. The copied string is %NULL-terminated.
|
| 1689 |
|
|
* If the string is being read by the user process, it is copied
|
| 1690 |
|
|
* and a newline '\n' is added. It is truncated if the buffer is
|
| 1691 |
|
|
* not large enough.
|
| 1692 |
|
|
*
|
| 1693 |
|
|
* Returns 0 on success.
|
| 1694 |
|
|
*/
|
| 1695 |
|
|
int proc_dostring(struct ctl_table *table, int write, struct file *filp,
|
| 1696 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 1697 |
|
|
{
|
| 1698 |
|
|
return _proc_do_string(table->data, table->maxlen, write, filp,
|
| 1699 |
|
|
buffer, lenp, ppos);
|
| 1700 |
|
|
}
|
| 1701 |
|
|
|
| 1702 |
|
|
|
| 1703 |
|
|
static int do_proc_dointvec_conv(int *negp, unsigned long *lvalp,
|
| 1704 |
|
|
int *valp,
|
| 1705 |
|
|
int write, void *data)
|
| 1706 |
|
|
{
|
| 1707 |
|
|
if (write) {
|
| 1708 |
|
|
*valp = *negp ? -*lvalp : *lvalp;
|
| 1709 |
|
|
} else {
|
| 1710 |
|
|
int val = *valp;
|
| 1711 |
|
|
if (val < 0) {
|
| 1712 |
|
|
*negp = -1;
|
| 1713 |
|
|
*lvalp = (unsigned long)-val;
|
| 1714 |
|
|
} else {
|
| 1715 |
|
|
*negp = 0;
|
| 1716 |
|
|
*lvalp = (unsigned long)val;
|
| 1717 |
|
|
}
|
| 1718 |
|
|
}
|
| 1719 |
|
|
return 0;
|
| 1720 |
|
|
}
|
| 1721 |
|
|
|
| 1722 |
|
|
static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
|
| 1723 |
|
|
int write, struct file *filp, void __user *buffer,
|
| 1724 |
|
|
size_t *lenp, loff_t *ppos,
|
| 1725 |
|
|
int (*conv)(int *negp, unsigned long *lvalp, int *valp,
|
| 1726 |
|
|
int write, void *data),
|
| 1727 |
|
|
void *data)
|
| 1728 |
|
|
{
|
| 1729 |
|
|
#define TMPBUFLEN 21
|
| 1730 |
|
|
int *i, vleft, first=1, neg, val;
|
| 1731 |
|
|
unsigned long lval;
|
| 1732 |
|
|
size_t left, len;
|
| 1733 |
|
|
|
| 1734 |
|
|
char buf[TMPBUFLEN], *p;
|
| 1735 |
|
|
char __user *s = buffer;
|
| 1736 |
|
|
|
| 1737 |
|
|
if (!tbl_data || !table->maxlen || !*lenp ||
|
| 1738 |
|
|
(*ppos && !write)) {
|
| 1739 |
|
|
*lenp = 0;
|
| 1740 |
|
|
return 0;
|
| 1741 |
|
|
}
|
| 1742 |
|
|
|
| 1743 |
|
|
i = (int *) tbl_data;
|
| 1744 |
|
|
vleft = table->maxlen / sizeof(*i);
|
| 1745 |
|
|
left = *lenp;
|
| 1746 |
|
|
|
| 1747 |
|
|
if (!conv)
|
| 1748 |
|
|
conv = do_proc_dointvec_conv;
|
| 1749 |
|
|
|
| 1750 |
|
|
for (; left && vleft--; i++, first=0) {
|
| 1751 |
|
|
if (write) {
|
| 1752 |
|
|
while (left) {
|
| 1753 |
|
|
char c;
|
| 1754 |
|
|
if (get_user(c, s))
|
| 1755 |
|
|
return -EFAULT;
|
| 1756 |
|
|
if (!isspace(c))
|
| 1757 |
|
|
break;
|
| 1758 |
|
|
left--;
|
| 1759 |
|
|
s++;
|
| 1760 |
|
|
}
|
| 1761 |
|
|
if (!left)
|
| 1762 |
|
|
break;
|
| 1763 |
|
|
neg = 0;
|
| 1764 |
|
|
len = left;
|
| 1765 |
|
|
if (len > sizeof(buf) - 1)
|
| 1766 |
|
|
len = sizeof(buf) - 1;
|
| 1767 |
|
|
if (copy_from_user(buf, s, len))
|
| 1768 |
|
|
return -EFAULT;
|
| 1769 |
|
|
buf[len] = 0;
|
| 1770 |
|
|
p = buf;
|
| 1771 |
|
|
if (*p == '-' && left > 1) {
|
| 1772 |
|
|
neg = 1;
|
| 1773 |
|
|
p++;
|
| 1774 |
|
|
}
|
| 1775 |
|
|
if (*p < '0' || *p > '9')
|
| 1776 |
|
|
break;
|
| 1777 |
|
|
|
| 1778 |
|
|
lval = simple_strtoul(p, &p, 0);
|
| 1779 |
|
|
|
| 1780 |
|
|
len = p-buf;
|
| 1781 |
|
|
if ((len < left) && *p && !isspace(*p))
|
| 1782 |
|
|
break;
|
| 1783 |
|
|
if (neg)
|
| 1784 |
|
|
val = -val;
|
| 1785 |
|
|
s += len;
|
| 1786 |
|
|
left -= len;
|
| 1787 |
|
|
|
| 1788 |
|
|
if (conv(&neg, &lval, i, 1, data))
|
| 1789 |
|
|
break;
|
| 1790 |
|
|
} else {
|
| 1791 |
|
|
p = buf;
|
| 1792 |
|
|
if (!first)
|
| 1793 |
|
|
*p++ = '\t';
|
| 1794 |
|
|
|
| 1795 |
|
|
if (conv(&neg, &lval, i, 0, data))
|
| 1796 |
|
|
break;
|
| 1797 |
|
|
|
| 1798 |
|
|
sprintf(p, "%s%lu", neg ? "-" : "", lval);
|
| 1799 |
|
|
len = strlen(buf);
|
| 1800 |
|
|
if (len > left)
|
| 1801 |
|
|
len = left;
|
| 1802 |
|
|
if(copy_to_user(s, buf, len))
|
| 1803 |
|
|
return -EFAULT;
|
| 1804 |
|
|
left -= len;
|
| 1805 |
|
|
s += len;
|
| 1806 |
|
|
}
|
| 1807 |
|
|
}
|
| 1808 |
|
|
|
| 1809 |
|
|
if (!write && !first && left) {
|
| 1810 |
|
|
if(put_user('\n', s))
|
| 1811 |
|
|
return -EFAULT;
|
| 1812 |
|
|
left--, s++;
|
| 1813 |
|
|
}
|
| 1814 |
|
|
if (write) {
|
| 1815 |
|
|
while (left) {
|
| 1816 |
|
|
char c;
|
| 1817 |
|
|
if (get_user(c, s++))
|
| 1818 |
|
|
return -EFAULT;
|
| 1819 |
|
|
if (!isspace(c))
|
| 1820 |
|
|
break;
|
| 1821 |
|
|
left--;
|
| 1822 |
|
|
}
|
| 1823 |
|
|
}
|
| 1824 |
|
|
if (write && first)
|
| 1825 |
|
|
return -EINVAL;
|
| 1826 |
|
|
*lenp -= left;
|
| 1827 |
|
|
*ppos += *lenp;
|
| 1828 |
|
|
return 0;
|
| 1829 |
|
|
#undef TMPBUFLEN
|
| 1830 |
|
|
}
|
| 1831 |
|
|
|
| 1832 |
|
|
static int do_proc_dointvec(struct ctl_table *table, int write, struct file *filp,
|
| 1833 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos,
|
| 1834 |
|
|
int (*conv)(int *negp, unsigned long *lvalp, int *valp,
|
| 1835 |
|
|
int write, void *data),
|
| 1836 |
|
|
void *data)
|
| 1837 |
|
|
{
|
| 1838 |
|
|
return __do_proc_dointvec(table->data, table, write, filp,
|
| 1839 |
|
|
buffer, lenp, ppos, conv, data);
|
| 1840 |
|
|
}
|
| 1841 |
|
|
|
| 1842 |
|
|
/**
|
| 1843 |
|
|
* proc_dointvec - read a vector of integers
|
| 1844 |
|
|
* @table: the sysctl table
|
| 1845 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 1846 |
|
|
* @filp: the file structure
|
| 1847 |
|
|
* @buffer: the user buffer
|
| 1848 |
|
|
* @lenp: the size of the user buffer
|
| 1849 |
|
|
* @ppos: file position
|
| 1850 |
|
|
*
|
| 1851 |
|
|
* Reads/writes up to table->maxlen/sizeof(unsigned int) integer
|
| 1852 |
|
|
* values from/to the user buffer, treated as an ASCII string.
|
| 1853 |
|
|
*
|
| 1854 |
|
|
* Returns 0 on success.
|
| 1855 |
|
|
*/
|
| 1856 |
|
|
int proc_dointvec(struct ctl_table *table, int write, struct file *filp,
|
| 1857 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 1858 |
|
|
{
|
| 1859 |
|
|
return do_proc_dointvec(table,write,filp,buffer,lenp,ppos,
|
| 1860 |
|
|
NULL,NULL);
|
| 1861 |
|
|
}
|
| 1862 |
|
|
|
| 1863 |
|
|
#define OP_SET 0
|
| 1864 |
|
|
#define OP_AND 1
|
| 1865 |
|
|
#define OP_OR 2
|
| 1866 |
|
|
|
| 1867 |
|
|
static int do_proc_dointvec_bset_conv(int *negp, unsigned long *lvalp,
|
| 1868 |
|
|
int *valp,
|
| 1869 |
|
|
int write, void *data)
|
| 1870 |
|
|
{
|
| 1871 |
|
|
int op = *(int *)data;
|
| 1872 |
|
|
if (write) {
|
| 1873 |
|
|
int val = *negp ? -*lvalp : *lvalp;
|
| 1874 |
|
|
switch(op) {
|
| 1875 |
|
|
case OP_SET: *valp = val; break;
|
| 1876 |
|
|
case OP_AND: *valp &= val; break;
|
| 1877 |
|
|
case OP_OR: *valp |= val; break;
|
| 1878 |
|
|
}
|
| 1879 |
|
|
} else {
|
| 1880 |
|
|
int val = *valp;
|
| 1881 |
|
|
if (val < 0) {
|
| 1882 |
|
|
*negp = -1;
|
| 1883 |
|
|
*lvalp = (unsigned long)-val;
|
| 1884 |
|
|
} else {
|
| 1885 |
|
|
*negp = 0;
|
| 1886 |
|
|
*lvalp = (unsigned long)val;
|
| 1887 |
|
|
}
|
| 1888 |
|
|
}
|
| 1889 |
|
|
return 0;
|
| 1890 |
|
|
}
|
| 1891 |
|
|
|
| 1892 |
|
|
#ifdef CONFIG_SECURITY_CAPABILITIES
|
| 1893 |
|
|
/*
|
| 1894 |
|
|
* init may raise the set.
|
| 1895 |
|
|
*/
|
| 1896 |
|
|
|
| 1897 |
|
|
int proc_dointvec_bset(struct ctl_table *table, int write, struct file *filp,
|
| 1898 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 1899 |
|
|
{
|
| 1900 |
|
|
int op;
|
| 1901 |
|
|
|
| 1902 |
|
|
if (write && !capable(CAP_SYS_MODULE)) {
|
| 1903 |
|
|
return -EPERM;
|
| 1904 |
|
|
}
|
| 1905 |
|
|
|
| 1906 |
|
|
op = is_global_init(current) ? OP_SET : OP_AND;
|
| 1907 |
|
|
return do_proc_dointvec(table,write,filp,buffer,lenp,ppos,
|
| 1908 |
|
|
do_proc_dointvec_bset_conv,&op);
|
| 1909 |
|
|
}
|
| 1910 |
|
|
#endif /* def CONFIG_SECURITY_CAPABILITIES */
|
| 1911 |
|
|
|
| 1912 |
|
|
/*
|
| 1913 |
|
|
* Taint values can only be increased
|
| 1914 |
|
|
*/
|
| 1915 |
|
|
static int proc_dointvec_taint(struct ctl_table *table, int write, struct file *filp,
|
| 1916 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 1917 |
|
|
{
|
| 1918 |
|
|
int op;
|
| 1919 |
|
|
|
| 1920 |
|
|
if (write && !capable(CAP_SYS_ADMIN))
|
| 1921 |
|
|
return -EPERM;
|
| 1922 |
|
|
|
| 1923 |
|
|
op = OP_OR;
|
| 1924 |
|
|
return do_proc_dointvec(table,write,filp,buffer,lenp,ppos,
|
| 1925 |
|
|
do_proc_dointvec_bset_conv,&op);
|
| 1926 |
|
|
}
|
| 1927 |
|
|
|
| 1928 |
|
|
struct do_proc_dointvec_minmax_conv_param {
|
| 1929 |
|
|
int *min;
|
| 1930 |
|
|
int *max;
|
| 1931 |
|
|
};
|
| 1932 |
|
|
|
| 1933 |
|
|
static int do_proc_dointvec_minmax_conv(int *negp, unsigned long *lvalp,
|
| 1934 |
|
|
int *valp,
|
| 1935 |
|
|
int write, void *data)
|
| 1936 |
|
|
{
|
| 1937 |
|
|
struct do_proc_dointvec_minmax_conv_param *param = data;
|
| 1938 |
|
|
if (write) {
|
| 1939 |
|
|
int val = *negp ? -*lvalp : *lvalp;
|
| 1940 |
|
|
if ((param->min && *param->min > val) ||
|
| 1941 |
|
|
(param->max && *param->max < val))
|
| 1942 |
|
|
return -EINVAL;
|
| 1943 |
|
|
*valp = val;
|
| 1944 |
|
|
} else {
|
| 1945 |
|
|
int val = *valp;
|
| 1946 |
|
|
if (val < 0) {
|
| 1947 |
|
|
*negp = -1;
|
| 1948 |
|
|
*lvalp = (unsigned long)-val;
|
| 1949 |
|
|
} else {
|
| 1950 |
|
|
*negp = 0;
|
| 1951 |
|
|
*lvalp = (unsigned long)val;
|
| 1952 |
|
|
}
|
| 1953 |
|
|
}
|
| 1954 |
|
|
return 0;
|
| 1955 |
|
|
}
|
| 1956 |
|
|
|
| 1957 |
|
|
/**
|
| 1958 |
|
|
* proc_dointvec_minmax - read a vector of integers with min/max values
|
| 1959 |
|
|
* @table: the sysctl table
|
| 1960 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 1961 |
|
|
* @filp: the file structure
|
| 1962 |
|
|
* @buffer: the user buffer
|
| 1963 |
|
|
* @lenp: the size of the user buffer
|
| 1964 |
|
|
* @ppos: file position
|
| 1965 |
|
|
*
|
| 1966 |
|
|
* Reads/writes up to table->maxlen/sizeof(unsigned int) integer
|
| 1967 |
|
|
* values from/to the user buffer, treated as an ASCII string.
|
| 1968 |
|
|
*
|
| 1969 |
|
|
* This routine will ensure the values are within the range specified by
|
| 1970 |
|
|
* table->extra1 (min) and table->extra2 (max).
|
| 1971 |
|
|
*
|
| 1972 |
|
|
* Returns 0 on success.
|
| 1973 |
|
|
*/
|
| 1974 |
|
|
int proc_dointvec_minmax(struct ctl_table *table, int write, struct file *filp,
|
| 1975 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 1976 |
|
|
{
|
| 1977 |
|
|
struct do_proc_dointvec_minmax_conv_param param = {
|
| 1978 |
|
|
.min = (int *) table->extra1,
|
| 1979 |
|
|
.max = (int *) table->extra2,
|
| 1980 |
|
|
};
|
| 1981 |
|
|
return do_proc_dointvec(table, write, filp, buffer, lenp, ppos,
|
| 1982 |
|
|
do_proc_dointvec_minmax_conv, ¶m);
|
| 1983 |
|
|
}
|
| 1984 |
|
|
|
| 1985 |
|
|
static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,
|
| 1986 |
|
|
struct file *filp,
|
| 1987 |
|
|
void __user *buffer,
|
| 1988 |
|
|
size_t *lenp, loff_t *ppos,
|
| 1989 |
|
|
unsigned long convmul,
|
| 1990 |
|
|
unsigned long convdiv)
|
| 1991 |
|
|
{
|
| 1992 |
|
|
#define TMPBUFLEN 21
|
| 1993 |
|
|
unsigned long *i, *min, *max, val;
|
| 1994 |
|
|
int vleft, first=1, neg;
|
| 1995 |
|
|
size_t len, left;
|
| 1996 |
|
|
char buf[TMPBUFLEN], *p;
|
| 1997 |
|
|
char __user *s = buffer;
|
| 1998 |
|
|
|
| 1999 |
|
|
if (!data || !table->maxlen || !*lenp ||
|
| 2000 |
|
|
(*ppos && !write)) {
|
| 2001 |
|
|
*lenp = 0;
|
| 2002 |
|
|
return 0;
|
| 2003 |
|
|
}
|
| 2004 |
|
|
|
| 2005 |
|
|
i = (unsigned long *) data;
|
| 2006 |
|
|
min = (unsigned long *) table->extra1;
|
| 2007 |
|
|
max = (unsigned long *) table->extra2;
|
| 2008 |
|
|
vleft = table->maxlen / sizeof(unsigned long);
|
| 2009 |
|
|
left = *lenp;
|
| 2010 |
|
|
|
| 2011 |
|
|
for (; left && vleft--; i++, min++, max++, first=0) {
|
| 2012 |
|
|
if (write) {
|
| 2013 |
|
|
while (left) {
|
| 2014 |
|
|
char c;
|
| 2015 |
|
|
if (get_user(c, s))
|
| 2016 |
|
|
return -EFAULT;
|
| 2017 |
|
|
if (!isspace(c))
|
| 2018 |
|
|
break;
|
| 2019 |
|
|
left--;
|
| 2020 |
|
|
s++;
|
| 2021 |
|
|
}
|
| 2022 |
|
|
if (!left)
|
| 2023 |
|
|
break;
|
| 2024 |
|
|
neg = 0;
|
| 2025 |
|
|
len = left;
|
| 2026 |
|
|
if (len > TMPBUFLEN-1)
|
| 2027 |
|
|
len = TMPBUFLEN-1;
|
| 2028 |
|
|
if (copy_from_user(buf, s, len))
|
| 2029 |
|
|
return -EFAULT;
|
| 2030 |
|
|
buf[len] = 0;
|
| 2031 |
|
|
p = buf;
|
| 2032 |
|
|
if (*p == '-' && left > 1) {
|
| 2033 |
|
|
neg = 1;
|
| 2034 |
|
|
p++;
|
| 2035 |
|
|
}
|
| 2036 |
|
|
if (*p < '0' || *p > '9')
|
| 2037 |
|
|
break;
|
| 2038 |
|
|
val = simple_strtoul(p, &p, 0) * convmul / convdiv ;
|
| 2039 |
|
|
len = p-buf;
|
| 2040 |
|
|
if ((len < left) && *p && !isspace(*p))
|
| 2041 |
|
|
break;
|
| 2042 |
|
|
if (neg)
|
| 2043 |
|
|
val = -val;
|
| 2044 |
|
|
s += len;
|
| 2045 |
|
|
left -= len;
|
| 2046 |
|
|
|
| 2047 |
|
|
if(neg)
|
| 2048 |
|
|
continue;
|
| 2049 |
|
|
if ((min && val < *min) || (max && val > *max))
|
| 2050 |
|
|
continue;
|
| 2051 |
|
|
*i = val;
|
| 2052 |
|
|
} else {
|
| 2053 |
|
|
p = buf;
|
| 2054 |
|
|
if (!first)
|
| 2055 |
|
|
*p++ = '\t';
|
| 2056 |
|
|
sprintf(p, "%lu", convdiv * (*i) / convmul);
|
| 2057 |
|
|
len = strlen(buf);
|
| 2058 |
|
|
if (len > left)
|
| 2059 |
|
|
len = left;
|
| 2060 |
|
|
if(copy_to_user(s, buf, len))
|
| 2061 |
|
|
return -EFAULT;
|
| 2062 |
|
|
left -= len;
|
| 2063 |
|
|
s += len;
|
| 2064 |
|
|
}
|
| 2065 |
|
|
}
|
| 2066 |
|
|
|
| 2067 |
|
|
if (!write && !first && left) {
|
| 2068 |
|
|
if(put_user('\n', s))
|
| 2069 |
|
|
return -EFAULT;
|
| 2070 |
|
|
left--, s++;
|
| 2071 |
|
|
}
|
| 2072 |
|
|
if (write) {
|
| 2073 |
|
|
while (left) {
|
| 2074 |
|
|
char c;
|
| 2075 |
|
|
if (get_user(c, s++))
|
| 2076 |
|
|
return -EFAULT;
|
| 2077 |
|
|
if (!isspace(c))
|
| 2078 |
|
|
break;
|
| 2079 |
|
|
left--;
|
| 2080 |
|
|
}
|
| 2081 |
|
|
}
|
| 2082 |
|
|
if (write && first)
|
| 2083 |
|
|
return -EINVAL;
|
| 2084 |
|
|
*lenp -= left;
|
| 2085 |
|
|
*ppos += *lenp;
|
| 2086 |
|
|
return 0;
|
| 2087 |
|
|
#undef TMPBUFLEN
|
| 2088 |
|
|
}
|
| 2089 |
|
|
|
| 2090 |
|
|
static int do_proc_doulongvec_minmax(struct ctl_table *table, int write,
|
| 2091 |
|
|
struct file *filp,
|
| 2092 |
|
|
void __user *buffer,
|
| 2093 |
|
|
size_t *lenp, loff_t *ppos,
|
| 2094 |
|
|
unsigned long convmul,
|
| 2095 |
|
|
unsigned long convdiv)
|
| 2096 |
|
|
{
|
| 2097 |
|
|
return __do_proc_doulongvec_minmax(table->data, table, write,
|
| 2098 |
|
|
filp, buffer, lenp, ppos, convmul, convdiv);
|
| 2099 |
|
|
}
|
| 2100 |
|
|
|
| 2101 |
|
|
/**
|
| 2102 |
|
|
* proc_doulongvec_minmax - read a vector of long integers with min/max values
|
| 2103 |
|
|
* @table: the sysctl table
|
| 2104 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 2105 |
|
|
* @filp: the file structure
|
| 2106 |
|
|
* @buffer: the user buffer
|
| 2107 |
|
|
* @lenp: the size of the user buffer
|
| 2108 |
|
|
* @ppos: file position
|
| 2109 |
|
|
*
|
| 2110 |
|
|
* Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
|
| 2111 |
|
|
* values from/to the user buffer, treated as an ASCII string.
|
| 2112 |
|
|
*
|
| 2113 |
|
|
* This routine will ensure the values are within the range specified by
|
| 2114 |
|
|
* table->extra1 (min) and table->extra2 (max).
|
| 2115 |
|
|
*
|
| 2116 |
|
|
* Returns 0 on success.
|
| 2117 |
|
|
*/
|
| 2118 |
|
|
int proc_doulongvec_minmax(struct ctl_table *table, int write, struct file *filp,
|
| 2119 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2120 |
|
|
{
|
| 2121 |
|
|
return do_proc_doulongvec_minmax(table, write, filp, buffer, lenp, ppos, 1l, 1l);
|
| 2122 |
|
|
}
|
| 2123 |
|
|
|
| 2124 |
|
|
/**
|
| 2125 |
|
|
* proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values
|
| 2126 |
|
|
* @table: the sysctl table
|
| 2127 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 2128 |
|
|
* @filp: the file structure
|
| 2129 |
|
|
* @buffer: the user buffer
|
| 2130 |
|
|
* @lenp: the size of the user buffer
|
| 2131 |
|
|
* @ppos: file position
|
| 2132 |
|
|
*
|
| 2133 |
|
|
* Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
|
| 2134 |
|
|
* values from/to the user buffer, treated as an ASCII string. The values
|
| 2135 |
|
|
* are treated as milliseconds, and converted to jiffies when they are stored.
|
| 2136 |
|
|
*
|
| 2137 |
|
|
* This routine will ensure the values are within the range specified by
|
| 2138 |
|
|
* table->extra1 (min) and table->extra2 (max).
|
| 2139 |
|
|
*
|
| 2140 |
|
|
* Returns 0 on success.
|
| 2141 |
|
|
*/
|
| 2142 |
|
|
int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
|
| 2143 |
|
|
struct file *filp,
|
| 2144 |
|
|
void __user *buffer,
|
| 2145 |
|
|
size_t *lenp, loff_t *ppos)
|
| 2146 |
|
|
{
|
| 2147 |
|
|
return do_proc_doulongvec_minmax(table, write, filp, buffer,
|
| 2148 |
|
|
lenp, ppos, HZ, 1000l);
|
| 2149 |
|
|
}
|
| 2150 |
|
|
|
| 2151 |
|
|
|
| 2152 |
|
|
static int do_proc_dointvec_jiffies_conv(int *negp, unsigned long *lvalp,
|
| 2153 |
|
|
int *valp,
|
| 2154 |
|
|
int write, void *data)
|
| 2155 |
|
|
{
|
| 2156 |
|
|
if (write) {
|
| 2157 |
|
|
if (*lvalp > LONG_MAX / HZ)
|
| 2158 |
|
|
return 1;
|
| 2159 |
|
|
*valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ);
|
| 2160 |
|
|
} else {
|
| 2161 |
|
|
int val = *valp;
|
| 2162 |
|
|
unsigned long lval;
|
| 2163 |
|
|
if (val < 0) {
|
| 2164 |
|
|
*negp = -1;
|
| 2165 |
|
|
lval = (unsigned long)-val;
|
| 2166 |
|
|
} else {
|
| 2167 |
|
|
*negp = 0;
|
| 2168 |
|
|
lval = (unsigned long)val;
|
| 2169 |
|
|
}
|
| 2170 |
|
|
*lvalp = lval / HZ;
|
| 2171 |
|
|
}
|
| 2172 |
|
|
return 0;
|
| 2173 |
|
|
}
|
| 2174 |
|
|
|
| 2175 |
|
|
static int do_proc_dointvec_userhz_jiffies_conv(int *negp, unsigned long *lvalp,
|
| 2176 |
|
|
int *valp,
|
| 2177 |
|
|
int write, void *data)
|
| 2178 |
|
|
{
|
| 2179 |
|
|
if (write) {
|
| 2180 |
|
|
if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ)
|
| 2181 |
|
|
return 1;
|
| 2182 |
|
|
*valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp);
|
| 2183 |
|
|
} else {
|
| 2184 |
|
|
int val = *valp;
|
| 2185 |
|
|
unsigned long lval;
|
| 2186 |
|
|
if (val < 0) {
|
| 2187 |
|
|
*negp = -1;
|
| 2188 |
|
|
lval = (unsigned long)-val;
|
| 2189 |
|
|
} else {
|
| 2190 |
|
|
*negp = 0;
|
| 2191 |
|
|
lval = (unsigned long)val;
|
| 2192 |
|
|
}
|
| 2193 |
|
|
*lvalp = jiffies_to_clock_t(lval);
|
| 2194 |
|
|
}
|
| 2195 |
|
|
return 0;
|
| 2196 |
|
|
}
|
| 2197 |
|
|
|
| 2198 |
|
|
static int do_proc_dointvec_ms_jiffies_conv(int *negp, unsigned long *lvalp,
|
| 2199 |
|
|
int *valp,
|
| 2200 |
|
|
int write, void *data)
|
| 2201 |
|
|
{
|
| 2202 |
|
|
if (write) {
|
| 2203 |
|
|
*valp = msecs_to_jiffies(*negp ? -*lvalp : *lvalp);
|
| 2204 |
|
|
} else {
|
| 2205 |
|
|
int val = *valp;
|
| 2206 |
|
|
unsigned long lval;
|
| 2207 |
|
|
if (val < 0) {
|
| 2208 |
|
|
*negp = -1;
|
| 2209 |
|
|
lval = (unsigned long)-val;
|
| 2210 |
|
|
} else {
|
| 2211 |
|
|
*negp = 0;
|
| 2212 |
|
|
lval = (unsigned long)val;
|
| 2213 |
|
|
}
|
| 2214 |
|
|
*lvalp = jiffies_to_msecs(lval);
|
| 2215 |
|
|
}
|
| 2216 |
|
|
return 0;
|
| 2217 |
|
|
}
|
| 2218 |
|
|
|
| 2219 |
|
|
/**
|
| 2220 |
|
|
* proc_dointvec_jiffies - read a vector of integers as seconds
|
| 2221 |
|
|
* @table: the sysctl table
|
| 2222 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 2223 |
|
|
* @filp: the file structure
|
| 2224 |
|
|
* @buffer: the user buffer
|
| 2225 |
|
|
* @lenp: the size of the user buffer
|
| 2226 |
|
|
* @ppos: file position
|
| 2227 |
|
|
*
|
| 2228 |
|
|
* Reads/writes up to table->maxlen/sizeof(unsigned int) integer
|
| 2229 |
|
|
* values from/to the user buffer, treated as an ASCII string.
|
| 2230 |
|
|
* The values read are assumed to be in seconds, and are converted into
|
| 2231 |
|
|
* jiffies.
|
| 2232 |
|
|
*
|
| 2233 |
|
|
* Returns 0 on success.
|
| 2234 |
|
|
*/
|
| 2235 |
|
|
int proc_dointvec_jiffies(struct ctl_table *table, int write, struct file *filp,
|
| 2236 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2237 |
|
|
{
|
| 2238 |
|
|
return do_proc_dointvec(table,write,filp,buffer,lenp,ppos,
|
| 2239 |
|
|
do_proc_dointvec_jiffies_conv,NULL);
|
| 2240 |
|
|
}
|
| 2241 |
|
|
|
| 2242 |
|
|
/**
|
| 2243 |
|
|
* proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds
|
| 2244 |
|
|
* @table: the sysctl table
|
| 2245 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 2246 |
|
|
* @filp: the file structure
|
| 2247 |
|
|
* @buffer: the user buffer
|
| 2248 |
|
|
* @lenp: the size of the user buffer
|
| 2249 |
|
|
* @ppos: pointer to the file position
|
| 2250 |
|
|
*
|
| 2251 |
|
|
* Reads/writes up to table->maxlen/sizeof(unsigned int) integer
|
| 2252 |
|
|
* values from/to the user buffer, treated as an ASCII string.
|
| 2253 |
|
|
* The values read are assumed to be in 1/USER_HZ seconds, and
|
| 2254 |
|
|
* are converted into jiffies.
|
| 2255 |
|
|
*
|
| 2256 |
|
|
* Returns 0 on success.
|
| 2257 |
|
|
*/
|
| 2258 |
|
|
int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, struct file *filp,
|
| 2259 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2260 |
|
|
{
|
| 2261 |
|
|
return do_proc_dointvec(table,write,filp,buffer,lenp,ppos,
|
| 2262 |
|
|
do_proc_dointvec_userhz_jiffies_conv,NULL);
|
| 2263 |
|
|
}
|
| 2264 |
|
|
|
| 2265 |
|
|
/**
|
| 2266 |
|
|
* proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds
|
| 2267 |
|
|
* @table: the sysctl table
|
| 2268 |
|
|
* @write: %TRUE if this is a write to the sysctl file
|
| 2269 |
|
|
* @filp: the file structure
|
| 2270 |
|
|
* @buffer: the user buffer
|
| 2271 |
|
|
* @lenp: the size of the user buffer
|
| 2272 |
|
|
* @ppos: file position
|
| 2273 |
|
|
* @ppos: the current position in the file
|
| 2274 |
|
|
*
|
| 2275 |
|
|
* Reads/writes up to table->maxlen/sizeof(unsigned int) integer
|
| 2276 |
|
|
* values from/to the user buffer, treated as an ASCII string.
|
| 2277 |
|
|
* The values read are assumed to be in 1/1000 seconds, and
|
| 2278 |
|
|
* are converted into jiffies.
|
| 2279 |
|
|
*
|
| 2280 |
|
|
* Returns 0 on success.
|
| 2281 |
|
|
*/
|
| 2282 |
|
|
int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, struct file *filp,
|
| 2283 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2284 |
|
|
{
|
| 2285 |
|
|
return do_proc_dointvec(table, write, filp, buffer, lenp, ppos,
|
| 2286 |
|
|
do_proc_dointvec_ms_jiffies_conv, NULL);
|
| 2287 |
|
|
}
|
| 2288 |
|
|
|
| 2289 |
|
|
static int proc_do_cad_pid(struct ctl_table *table, int write, struct file *filp,
|
| 2290 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2291 |
|
|
{
|
| 2292 |
|
|
struct pid *new_pid;
|
| 2293 |
|
|
pid_t tmp;
|
| 2294 |
|
|
int r;
|
| 2295 |
|
|
|
| 2296 |
|
|
tmp = pid_nr_ns(cad_pid, current->nsproxy->pid_ns);
|
| 2297 |
|
|
|
| 2298 |
|
|
r = __do_proc_dointvec(&tmp, table, write, filp, buffer,
|
| 2299 |
|
|
lenp, ppos, NULL, NULL);
|
| 2300 |
|
|
if (r || !write)
|
| 2301 |
|
|
return r;
|
| 2302 |
|
|
|
| 2303 |
|
|
new_pid = find_get_pid(tmp);
|
| 2304 |
|
|
if (!new_pid)
|
| 2305 |
|
|
return -ESRCH;
|
| 2306 |
|
|
|
| 2307 |
|
|
put_pid(xchg(&cad_pid, new_pid));
|
| 2308 |
|
|
return 0;
|
| 2309 |
|
|
}
|
| 2310 |
|
|
|
| 2311 |
|
|
#else /* CONFIG_PROC_FS */
|
| 2312 |
|
|
|
| 2313 |
|
|
int proc_dostring(struct ctl_table *table, int write, struct file *filp,
|
| 2314 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2315 |
|
|
{
|
| 2316 |
|
|
return -ENOSYS;
|
| 2317 |
|
|
}
|
| 2318 |
|
|
|
| 2319 |
|
|
int proc_dointvec(struct ctl_table *table, int write, struct file *filp,
|
| 2320 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2321 |
|
|
{
|
| 2322 |
|
|
return -ENOSYS;
|
| 2323 |
|
|
}
|
| 2324 |
|
|
|
| 2325 |
|
|
int proc_dointvec_bset(struct ctl_table *table, int write, struct file *filp,
|
| 2326 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2327 |
|
|
{
|
| 2328 |
|
|
return -ENOSYS;
|
| 2329 |
|
|
}
|
| 2330 |
|
|
|
| 2331 |
|
|
int proc_dointvec_minmax(struct ctl_table *table, int write, struct file *filp,
|
| 2332 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2333 |
|
|
{
|
| 2334 |
|
|
return -ENOSYS;
|
| 2335 |
|
|
}
|
| 2336 |
|
|
|
| 2337 |
|
|
int proc_dointvec_jiffies(struct ctl_table *table, int write, struct file *filp,
|
| 2338 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2339 |
|
|
{
|
| 2340 |
|
|
return -ENOSYS;
|
| 2341 |
|
|
}
|
| 2342 |
|
|
|
| 2343 |
|
|
int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, struct file *filp,
|
| 2344 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2345 |
|
|
{
|
| 2346 |
|
|
return -ENOSYS;
|
| 2347 |
|
|
}
|
| 2348 |
|
|
|
| 2349 |
|
|
int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, struct file *filp,
|
| 2350 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2351 |
|
|
{
|
| 2352 |
|
|
return -ENOSYS;
|
| 2353 |
|
|
}
|
| 2354 |
|
|
|
| 2355 |
|
|
int proc_doulongvec_minmax(struct ctl_table *table, int write, struct file *filp,
|
| 2356 |
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
| 2357 |
|
|
{
|
| 2358 |
|
|
return -ENOSYS;
|
| 2359 |
|
|
}
|
| 2360 |
|
|
|
| 2361 |
|
|
int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
|
| 2362 |
|
|
struct file *filp,
|
| 2363 |
|
|
void __user *buffer,
|
| 2364 |
|
|
size_t *lenp, loff_t *ppos)
|
| 2365 |
|
|
{
|
| 2366 |
|
|
return -ENOSYS;
|
| 2367 |
|
|
}
|
| 2368 |
|
|
|
| 2369 |
|
|
|
| 2370 |
|
|
#endif /* CONFIG_PROC_FS */
|
| 2371 |
|
|
|
| 2372 |
|
|
|
| 2373 |
|
|
#ifdef CONFIG_SYSCTL_SYSCALL
|
| 2374 |
|
|
/*
|
| 2375 |
|
|
* General sysctl support routines
|
| 2376 |
|
|
*/
|
| 2377 |
|
|
|
| 2378 |
|
|
/* The generic sysctl data routine (used if no strategy routine supplied) */
|
| 2379 |
|
|
int sysctl_data(struct ctl_table *table, int __user *name, int nlen,
|
| 2380 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2381 |
|
|
void __user *newval, size_t newlen)
|
| 2382 |
|
|
{
|
| 2383 |
|
|
size_t len;
|
| 2384 |
|
|
|
| 2385 |
|
|
/* Get out of I don't have a variable */
|
| 2386 |
|
|
if (!table->data || !table->maxlen)
|
| 2387 |
|
|
return -ENOTDIR;
|
| 2388 |
|
|
|
| 2389 |
|
|
if (oldval && oldlenp) {
|
| 2390 |
|
|
if (get_user(len, oldlenp))
|
| 2391 |
|
|
return -EFAULT;
|
| 2392 |
|
|
if (len) {
|
| 2393 |
|
|
if (len > table->maxlen)
|
| 2394 |
|
|
len = table->maxlen;
|
| 2395 |
|
|
if (copy_to_user(oldval, table->data, len))
|
| 2396 |
|
|
return -EFAULT;
|
| 2397 |
|
|
if (put_user(len, oldlenp))
|
| 2398 |
|
|
return -EFAULT;
|
| 2399 |
|
|
}
|
| 2400 |
|
|
}
|
| 2401 |
|
|
|
| 2402 |
|
|
if (newval && newlen) {
|
| 2403 |
|
|
if (newlen > table->maxlen)
|
| 2404 |
|
|
newlen = table->maxlen;
|
| 2405 |
|
|
|
| 2406 |
|
|
if (copy_from_user(table->data, newval, newlen))
|
| 2407 |
|
|
return -EFAULT;
|
| 2408 |
|
|
}
|
| 2409 |
|
|
return 1;
|
| 2410 |
|
|
}
|
| 2411 |
|
|
|
| 2412 |
|
|
/* The generic string strategy routine: */
|
| 2413 |
|
|
int sysctl_string(struct ctl_table *table, int __user *name, int nlen,
|
| 2414 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2415 |
|
|
void __user *newval, size_t newlen)
|
| 2416 |
|
|
{
|
| 2417 |
|
|
if (!table->data || !table->maxlen)
|
| 2418 |
|
|
return -ENOTDIR;
|
| 2419 |
|
|
|
| 2420 |
|
|
if (oldval && oldlenp) {
|
| 2421 |
|
|
size_t bufsize;
|
| 2422 |
|
|
if (get_user(bufsize, oldlenp))
|
| 2423 |
|
|
return -EFAULT;
|
| 2424 |
|
|
if (bufsize) {
|
| 2425 |
|
|
size_t len = strlen(table->data), copied;
|
| 2426 |
|
|
|
| 2427 |
|
|
/* This shouldn't trigger for a well-formed sysctl */
|
| 2428 |
|
|
if (len > table->maxlen)
|
| 2429 |
|
|
len = table->maxlen;
|
| 2430 |
|
|
|
| 2431 |
|
|
/* Copy up to a max of bufsize-1 bytes of the string */
|
| 2432 |
|
|
copied = (len >= bufsize) ? bufsize - 1 : len;
|
| 2433 |
|
|
|
| 2434 |
|
|
if (copy_to_user(oldval, table->data, copied) ||
|
| 2435 |
|
|
put_user(0, (char __user *)(oldval + copied)))
|
| 2436 |
|
|
return -EFAULT;
|
| 2437 |
|
|
if (put_user(len, oldlenp))
|
| 2438 |
|
|
return -EFAULT;
|
| 2439 |
|
|
}
|
| 2440 |
|
|
}
|
| 2441 |
|
|
if (newval && newlen) {
|
| 2442 |
|
|
size_t len = newlen;
|
| 2443 |
|
|
if (len > table->maxlen)
|
| 2444 |
|
|
len = table->maxlen;
|
| 2445 |
|
|
if(copy_from_user(table->data, newval, len))
|
| 2446 |
|
|
return -EFAULT;
|
| 2447 |
|
|
if (len == table->maxlen)
|
| 2448 |
|
|
len--;
|
| 2449 |
|
|
((char *) table->data)[len] = 0;
|
| 2450 |
|
|
}
|
| 2451 |
|
|
return 1;
|
| 2452 |
|
|
}
|
| 2453 |
|
|
|
| 2454 |
|
|
/*
|
| 2455 |
|
|
* This function makes sure that all of the integers in the vector
|
| 2456 |
|
|
* are between the minimum and maximum values given in the arrays
|
| 2457 |
|
|
* table->extra1 and table->extra2, respectively.
|
| 2458 |
|
|
*/
|
| 2459 |
|
|
int sysctl_intvec(struct ctl_table *table, int __user *name, int nlen,
|
| 2460 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2461 |
|
|
void __user *newval, size_t newlen)
|
| 2462 |
|
|
{
|
| 2463 |
|
|
|
| 2464 |
|
|
if (newval && newlen) {
|
| 2465 |
|
|
int __user *vec = (int __user *) newval;
|
| 2466 |
|
|
int *min = (int *) table->extra1;
|
| 2467 |
|
|
int *max = (int *) table->extra2;
|
| 2468 |
|
|
size_t length;
|
| 2469 |
|
|
int i;
|
| 2470 |
|
|
|
| 2471 |
|
|
if (newlen % sizeof(int) != 0)
|
| 2472 |
|
|
return -EINVAL;
|
| 2473 |
|
|
|
| 2474 |
|
|
if (!table->extra1 && !table->extra2)
|
| 2475 |
|
|
return 0;
|
| 2476 |
|
|
|
| 2477 |
|
|
if (newlen > table->maxlen)
|
| 2478 |
|
|
newlen = table->maxlen;
|
| 2479 |
|
|
length = newlen / sizeof(int);
|
| 2480 |
|
|
|
| 2481 |
|
|
for (i = 0; i < length; i++) {
|
| 2482 |
|
|
int value;
|
| 2483 |
|
|
if (get_user(value, vec + i))
|
| 2484 |
|
|
return -EFAULT;
|
| 2485 |
|
|
if (min && value < min[i])
|
| 2486 |
|
|
return -EINVAL;
|
| 2487 |
|
|
if (max && value > max[i])
|
| 2488 |
|
|
return -EINVAL;
|
| 2489 |
|
|
}
|
| 2490 |
|
|
}
|
| 2491 |
|
|
return 0;
|
| 2492 |
|
|
}
|
| 2493 |
|
|
|
| 2494 |
|
|
/* Strategy function to convert jiffies to seconds */
|
| 2495 |
|
|
int sysctl_jiffies(struct ctl_table *table, int __user *name, int nlen,
|
| 2496 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2497 |
|
|
void __user *newval, size_t newlen)
|
| 2498 |
|
|
{
|
| 2499 |
|
|
if (oldval && oldlenp) {
|
| 2500 |
|
|
size_t olen;
|
| 2501 |
|
|
|
| 2502 |
|
|
if (get_user(olen, oldlenp))
|
| 2503 |
|
|
return -EFAULT;
|
| 2504 |
|
|
if (olen) {
|
| 2505 |
|
|
int val;
|
| 2506 |
|
|
|
| 2507 |
|
|
if (olen < sizeof(int))
|
| 2508 |
|
|
return -EINVAL;
|
| 2509 |
|
|
|
| 2510 |
|
|
val = *(int *)(table->data) / HZ;
|
| 2511 |
|
|
if (put_user(val, (int __user *)oldval))
|
| 2512 |
|
|
return -EFAULT;
|
| 2513 |
|
|
if (put_user(sizeof(int), oldlenp))
|
| 2514 |
|
|
return -EFAULT;
|
| 2515 |
|
|
}
|
| 2516 |
|
|
}
|
| 2517 |
|
|
if (newval && newlen) {
|
| 2518 |
|
|
int new;
|
| 2519 |
|
|
if (newlen != sizeof(int))
|
| 2520 |
|
|
return -EINVAL;
|
| 2521 |
|
|
if (get_user(new, (int __user *)newval))
|
| 2522 |
|
|
return -EFAULT;
|
| 2523 |
|
|
*(int *)(table->data) = new*HZ;
|
| 2524 |
|
|
}
|
| 2525 |
|
|
return 1;
|
| 2526 |
|
|
}
|
| 2527 |
|
|
|
| 2528 |
|
|
/* Strategy function to convert jiffies to seconds */
|
| 2529 |
|
|
int sysctl_ms_jiffies(struct ctl_table *table, int __user *name, int nlen,
|
| 2530 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2531 |
|
|
void __user *newval, size_t newlen)
|
| 2532 |
|
|
{
|
| 2533 |
|
|
if (oldval && oldlenp) {
|
| 2534 |
|
|
size_t olen;
|
| 2535 |
|
|
|
| 2536 |
|
|
if (get_user(olen, oldlenp))
|
| 2537 |
|
|
return -EFAULT;
|
| 2538 |
|
|
if (olen) {
|
| 2539 |
|
|
int val;
|
| 2540 |
|
|
|
| 2541 |
|
|
if (olen < sizeof(int))
|
| 2542 |
|
|
return -EINVAL;
|
| 2543 |
|
|
|
| 2544 |
|
|
val = jiffies_to_msecs(*(int *)(table->data));
|
| 2545 |
|
|
if (put_user(val, (int __user *)oldval))
|
| 2546 |
|
|
return -EFAULT;
|
| 2547 |
|
|
if (put_user(sizeof(int), oldlenp))
|
| 2548 |
|
|
return -EFAULT;
|
| 2549 |
|
|
}
|
| 2550 |
|
|
}
|
| 2551 |
|
|
if (newval && newlen) {
|
| 2552 |
|
|
int new;
|
| 2553 |
|
|
if (newlen != sizeof(int))
|
| 2554 |
|
|
return -EINVAL;
|
| 2555 |
|
|
if (get_user(new, (int __user *)newval))
|
| 2556 |
|
|
return -EFAULT;
|
| 2557 |
|
|
*(int *)(table->data) = msecs_to_jiffies(new);
|
| 2558 |
|
|
}
|
| 2559 |
|
|
return 1;
|
| 2560 |
|
|
}
|
| 2561 |
|
|
|
| 2562 |
|
|
|
| 2563 |
|
|
|
| 2564 |
|
|
#else /* CONFIG_SYSCTL_SYSCALL */
|
| 2565 |
|
|
|
| 2566 |
|
|
|
| 2567 |
|
|
asmlinkage long sys_sysctl(struct __sysctl_args __user *args)
|
| 2568 |
|
|
{
|
| 2569 |
|
|
struct __sysctl_args tmp;
|
| 2570 |
|
|
int error;
|
| 2571 |
|
|
|
| 2572 |
|
|
if (copy_from_user(&tmp, args, sizeof(tmp)))
|
| 2573 |
|
|
return -EFAULT;
|
| 2574 |
|
|
|
| 2575 |
|
|
error = deprecated_sysctl_warning(&tmp);
|
| 2576 |
|
|
|
| 2577 |
|
|
/* If no error reading the parameters then just -ENOSYS ... */
|
| 2578 |
|
|
if (!error)
|
| 2579 |
|
|
error = -ENOSYS;
|
| 2580 |
|
|
|
| 2581 |
|
|
return error;
|
| 2582 |
|
|
}
|
| 2583 |
|
|
|
| 2584 |
|
|
int sysctl_data(struct ctl_table *table, int __user *name, int nlen,
|
| 2585 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2586 |
|
|
void __user *newval, size_t newlen)
|
| 2587 |
|
|
{
|
| 2588 |
|
|
return -ENOSYS;
|
| 2589 |
|
|
}
|
| 2590 |
|
|
|
| 2591 |
|
|
int sysctl_string(struct ctl_table *table, int __user *name, int nlen,
|
| 2592 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2593 |
|
|
void __user *newval, size_t newlen)
|
| 2594 |
|
|
{
|
| 2595 |
|
|
return -ENOSYS;
|
| 2596 |
|
|
}
|
| 2597 |
|
|
|
| 2598 |
|
|
int sysctl_intvec(struct ctl_table *table, int __user *name, int nlen,
|
| 2599 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2600 |
|
|
void __user *newval, size_t newlen)
|
| 2601 |
|
|
{
|
| 2602 |
|
|
return -ENOSYS;
|
| 2603 |
|
|
}
|
| 2604 |
|
|
|
| 2605 |
|
|
int sysctl_jiffies(struct ctl_table *table, int __user *name, int nlen,
|
| 2606 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2607 |
|
|
void __user *newval, size_t newlen)
|
| 2608 |
|
|
{
|
| 2609 |
|
|
return -ENOSYS;
|
| 2610 |
|
|
}
|
| 2611 |
|
|
|
| 2612 |
|
|
int sysctl_ms_jiffies(struct ctl_table *table, int __user *name, int nlen,
|
| 2613 |
|
|
void __user *oldval, size_t __user *oldlenp,
|
| 2614 |
|
|
void __user *newval, size_t newlen)
|
| 2615 |
|
|
{
|
| 2616 |
|
|
return -ENOSYS;
|
| 2617 |
|
|
}
|
| 2618 |
|
|
|
| 2619 |
|
|
#endif /* CONFIG_SYSCTL_SYSCALL */
|
| 2620 |
|
|
|
| 2621 |
|
|
static int deprecated_sysctl_warning(struct __sysctl_args *args)
|
| 2622 |
|
|
{
|
| 2623 |
|
|
static int msg_count;
|
| 2624 |
|
|
int name[CTL_MAXNAME];
|
| 2625 |
|
|
int i;
|
| 2626 |
|
|
|
| 2627 |
|
|
/* Check args->nlen. */
|
| 2628 |
|
|
if (args->nlen < 0 || args->nlen > CTL_MAXNAME)
|
| 2629 |
|
|
return -ENOTDIR;
|
| 2630 |
|
|
|
| 2631 |
|
|
/* Read in the sysctl name for better debug message logging */
|
| 2632 |
|
|
for (i = 0; i < args->nlen; i++)
|
| 2633 |
|
|
if (get_user(name[i], args->name + i))
|
| 2634 |
|
|
return -EFAULT;
|
| 2635 |
|
|
|
| 2636 |
|
|
/* Ignore accesses to kernel.version */
|
| 2637 |
|
|
if ((args->nlen == 2) && (name[0] == CTL_KERN) && (name[1] == KERN_VERSION))
|
| 2638 |
|
|
return 0;
|
| 2639 |
|
|
|
| 2640 |
|
|
if (msg_count < 5) {
|
| 2641 |
|
|
msg_count++;
|
| 2642 |
|
|
printk(KERN_INFO
|
| 2643 |
|
|
"warning: process `%s' used the deprecated sysctl "
|
| 2644 |
|
|
"system call with ", current->comm);
|
| 2645 |
|
|
for (i = 0; i < args->nlen; i++)
|
| 2646 |
|
|
printk("%d.", name[i]);
|
| 2647 |
|
|
printk("\n");
|
| 2648 |
|
|
}
|
| 2649 |
|
|
return 0;
|
| 2650 |
|
|
}
|
| 2651 |
|
|
|
| 2652 |
|
|
/*
|
| 2653 |
|
|
* No sense putting this after each symbol definition, twice,
|
| 2654 |
|
|
* exception granted :-)
|
| 2655 |
|
|
*/
|
| 2656 |
|
|
EXPORT_SYMBOL(proc_dointvec);
|
| 2657 |
|
|
EXPORT_SYMBOL(proc_dointvec_jiffies);
|
| 2658 |
|
|
EXPORT_SYMBOL(proc_dointvec_minmax);
|
| 2659 |
|
|
EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);
|
| 2660 |
|
|
EXPORT_SYMBOL(proc_dointvec_ms_jiffies);
|
| 2661 |
|
|
EXPORT_SYMBOL(proc_dostring);
|
| 2662 |
|
|
EXPORT_SYMBOL(proc_doulongvec_minmax);
|
| 2663 |
|
|
EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax);
|
| 2664 |
|
|
EXPORT_SYMBOL(register_sysctl_table);
|
| 2665 |
|
|
EXPORT_SYMBOL(sysctl_intvec);
|
| 2666 |
|
|
EXPORT_SYMBOL(sysctl_jiffies);
|
| 2667 |
|
|
EXPORT_SYMBOL(sysctl_ms_jiffies);
|
| 2668 |
|
|
EXPORT_SYMBOL(sysctl_string);
|
| 2669 |
|
|
EXPORT_SYMBOL(sysctl_data);
|
| 2670 |
|
|
EXPORT_SYMBOL(unregister_sysctl_table);
|
