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kernel/sysctl.c
73.3 KB
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/* * sysctl.c: General linux system control interface * * Begun 24 March 1995, Stephen Tweedie * Added /proc support, Dec 1995 * Added bdflush entry and intvec min/max checking, 2/23/96, Tom Dyas. * Added hooks for /proc/sys/net (minor, minor patch), 96/4/1, Mike Shaver. * Added kernel/java-{interpreter,appletviewer}, 96/5/10, Mike Shaver. * Dynamic registration fixes, Stephen Tweedie. * Added kswapd-interval, ctrl-alt-del, printk stuff, 1/8/97, Chris Horn. * Made sysctl support optional via CONFIG_SYSCTL, 1/10/97, Chris * Horn. * Added proc_doulongvec_ms_jiffies_minmax, 09/08/99, Carlos H. Bauer. * Added proc_doulongvec_minmax, 09/08/99, Carlos H. Bauer. * Changed linked lists to use list.h instead of lists.h, 02/24/00, Bill * Wendling. * The list_for_each() macro wasn't appropriate for the sysctl loop. * Removed it and replaced it with older style, 03/23/00, Bill Wendling */ |
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#include <linux/module.h> #include <linux/mm.h> #include <linux/swap.h> #include <linux/slab.h> #include <linux/sysctl.h> #include <linux/proc_fs.h> |
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#include <linux/security.h> |
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#include <linux/ctype.h> #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> #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> #include <linux/highuid.h> #include <linux/writeback.h> #include <linux/hugetlb.h> |
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#include <linux/initrd.h> |
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#include <linux/key.h> |
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#include <linux/times.h> #include <linux/limits.h> #include <linux/dcache.h> #include <linux/syscalls.h> |
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#include <linux/vmstat.h> |
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#include <linux/nfs_fs.h> #include <linux/acpi.h> |
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#include <linux/reboot.h> |
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#include <linux/ftrace.h> |
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#include <linux/slow-work.h> |
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#include <asm/uaccess.h> #include <asm/processor.h> |
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#ifdef CONFIG_X86 #include <asm/nmi.h> |
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#include <asm/stacktrace.h> |
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#include <asm/io.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) /* External variables not in a header file. */ extern int C_A_D; |
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extern int print_fatal_signals; |
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extern int sysctl_overcommit_memory; 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 sysctl_oom_dump_tasks; |
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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; extern int min_free_kbytes; |
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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 latencytop_enabled; |
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extern int sysctl_nr_open_min, sysctl_nr_open_max; |
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#ifndef CONFIG_MMU extern int sysctl_nr_trim_pages; #endif |
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#ifdef CONFIG_RCU_TORTURE_TEST extern int rcutorture_runnable; #endif /* #ifdef CONFIG_RCU_TORTURE_TEST */ |
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/* Constants used for minimum and maximum */ |
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#ifdef CONFIG_DETECT_SOFTLOCKUP |
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static int sixty = 60; |
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static int neg_one = -1; |
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#endif |
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static int zero; |
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static int __maybe_unused one = 1; static int __maybe_unused two = 2; |
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static unsigned long one_ul = 1; |
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static int one_hundred = 100; |
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/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */ static unsigned long dirty_bytes_min = 2 * PAGE_SIZE; |
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/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */ static int maxolduid = 65535; 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_MODULES |
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extern char modprobe_path[]; #endif |
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#ifdef CONFIG_CHR_DEV_SG extern int sg_big_buff; #endif |
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#ifdef CONFIG_SPARC |
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#include <asm/system.h> |
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#endif |
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#ifdef CONFIG_SPARC64 extern int sysctl_tsb_ratio; #endif |
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#ifdef __hppa__ extern int pwrsw_enabled; extern int unaligned_enabled; #endif |
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#ifdef CONFIG_S390 |
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#ifdef CONFIG_MATHEMU extern int sysctl_ieee_emulation_warnings; #endif extern int sysctl_userprocess_debug; |
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extern int spin_retry; |
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#endif |
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#ifdef CONFIG_BSD_PROCESS_ACCT extern int acct_parm[]; #endif |
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#ifdef CONFIG_IA64 extern int no_unaligned_warning; |
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extern int unaligned_dump_stack; |
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#endif |
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#ifdef CONFIG_RT_MUTEXES extern int max_lock_depth; #endif |
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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_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_root sysctl_table_root; static struct ctl_table_header root_table_header = { |
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.count = 1, |
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.ctl_table = root_table, |
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.ctl_entry = LIST_HEAD_INIT(sysctl_table_root.default_set.list), |
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.root = &sysctl_table_root, |
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.set = &sysctl_table_root.default_set, |
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}; static struct ctl_table_root sysctl_table_root = { .root_list = LIST_HEAD_INIT(sysctl_table_root.root_list), |
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.default_set.list = LIST_HEAD_INIT(root_table_header.ctl_entry), |
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}; |
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static struct ctl_table kern_table[]; static struct ctl_table vm_table[]; static struct ctl_table fs_table[]; static struct ctl_table debug_table[]; static struct ctl_table dev_table[]; 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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#endif |
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#ifdef CONFIG_EPOLL extern struct ctl_table epoll_table[]; #endif |
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#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT int sysctl_legacy_va_layout; #endif |
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extern int prove_locking; extern int lock_stat; |
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/* The default sysctl tables: */ |
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static struct ctl_table root_table[] = { |
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{ .ctl_name = CTL_KERN, .procname = "kernel", .mode = 0555, .child = kern_table, }, { .ctl_name = CTL_VM, .procname = "vm", .mode = 0555, .child = vm_table, }, |
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{ |
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.ctl_name = CTL_FS, .procname = "fs", .mode = 0555, .child = fs_table, }, { .ctl_name = CTL_DEBUG, .procname = "debug", .mode = 0555, .child = debug_table, }, { .ctl_name = CTL_DEV, .procname = "dev", .mode = 0555, .child = dev_table, }, |
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/* * NOTE: do not add new entries to this table unless you have read * Documentation/sysctl/ctl_unnumbered.txt */ |
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{ .ctl_name = 0 } }; |
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#ifdef CONFIG_SCHED_DEBUG |
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static int min_sched_granularity_ns = 100000; /* 100 usecs */ static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */ static int min_wakeup_granularity_ns; /* 0 usecs */ static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */ |
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#endif |
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static struct ctl_table kern_table[] = { |
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#ifdef CONFIG_SCHED_DEBUG { .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_min_granularity_ns", .data = &sysctl_sched_min_granularity, |
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.maxlen = sizeof(unsigned int), .mode = 0644, |
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.proc_handler = &sched_nr_latency_handler, .strategy = &sysctl_intvec, .extra1 = &min_sched_granularity_ns, .extra2 = &max_sched_granularity_ns, |
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}, { .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_latency_ns", .data = &sysctl_sched_latency, .maxlen = sizeof(unsigned int), .mode = 0644, |
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.proc_handler = &sched_nr_latency_handler, |
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.strategy = &sysctl_intvec, .extra1 = &min_sched_granularity_ns, .extra2 = &max_sched_granularity_ns, }, { .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_wakeup_granularity_ns", .data = &sysctl_sched_wakeup_granularity, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, |
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.extra1 = &min_wakeup_granularity_ns, .extra2 = &max_wakeup_granularity_ns, }, { .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_shares_ratelimit", .data = &sysctl_sched_shares_ratelimit, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_shares_thresh", .data = &sysctl_sched_shares_thresh, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &zero, }, { .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_child_runs_first", .data = &sysctl_sched_child_runs_first, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
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{ .ctl_name = CTL_UNNUMBERED, .procname = "sched_features", .data = &sysctl_sched_features, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
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{ .ctl_name = CTL_UNNUMBERED, .procname = "sched_migration_cost", .data = &sysctl_sched_migration_cost, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
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{ .ctl_name = CTL_UNNUMBERED, .procname = "sched_nr_migrate", .data = &sysctl_sched_nr_migrate, .maxlen = sizeof(unsigned int), |
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.mode = 0644, .proc_handler = &proc_dointvec, }, |
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#endif |
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{ .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_rt_period_us", .data = &sysctl_sched_rt_period, .maxlen = sizeof(unsigned int), .mode = 0644, |
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.proc_handler = &sched_rt_handler, |
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}, { .ctl_name = CTL_UNNUMBERED, .procname = "sched_rt_runtime_us", .data = &sysctl_sched_rt_runtime, .maxlen = sizeof(int), .mode = 0644, |
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.proc_handler = &sched_rt_handler, |
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}, { .ctl_name = CTL_UNNUMBERED, |
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.procname = "sched_compat_yield", .data = &sysctl_sched_compat_yield, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
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#ifdef CONFIG_PROVE_LOCKING { .ctl_name = CTL_UNNUMBERED, .procname = "prove_locking", .data = &prove_locking, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif #ifdef CONFIG_LOCK_STAT { .ctl_name = CTL_UNNUMBERED, .procname = "lock_stat", .data = &lock_stat, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
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{ |
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.ctl_name = KERN_PANIC, .procname = "panic", .data = &panic_timeout, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = KERN_CORE_USES_PID, .procname = "core_uses_pid", .data = &core_uses_pid, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = KERN_CORE_PATTERN, .procname = "core_pattern", .data = core_pattern, |
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.maxlen = CORENAME_MAX_SIZE, |
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.mode = 0644, .proc_handler = &proc_dostring, .strategy = &sysctl_string, }, |
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#ifdef CONFIG_PROC_SYSCTL |
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{ |
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.procname = "tainted", |
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.maxlen = sizeof(long), |
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.mode = 0644, |
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.proc_handler = &proc_taint, |
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}, |
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#endif |
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#ifdef CONFIG_LATENCYTOP { .procname = "latencytop", .data = &latencytop_enabled, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
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#ifdef CONFIG_BLK_DEV_INITRD { .ctl_name = KERN_REALROOTDEV, .procname = "real-root-dev", .data = &real_root_dev, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
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{ .ctl_name = CTL_UNNUMBERED, .procname = "print-fatal-signals", .data = &print_fatal_signals, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
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#ifdef CONFIG_SPARC |
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{ .ctl_name = KERN_SPARC_REBOOT, .procname = "reboot-cmd", .data = reboot_command, .maxlen = 256, .mode = 0644, .proc_handler = &proc_dostring, .strategy = &sysctl_string, }, { .ctl_name = KERN_SPARC_STOP_A, .procname = "stop-a", .data = &stop_a_enabled, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = KERN_SPARC_SCONS_PWROFF, .procname = "scons-poweroff", .data = &scons_pwroff, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
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#ifdef CONFIG_SPARC64 { .ctl_name = CTL_UNNUMBERED, .procname = "tsb-ratio", .data = &sysctl_tsb_ratio, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
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#ifdef __hppa__ { .ctl_name = KERN_HPPA_PWRSW, .procname = "soft-power", .data = &pwrsw_enabled, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = KERN_HPPA_UNALIGNED, .procname = "unaligned-trap", .data = &unaligned_enabled, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif { .ctl_name = KERN_CTLALTDEL, .procname = "ctrl-alt-del", .data = &C_A_D, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
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#ifdef CONFIG_FUNCTION_TRACER |
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{ .ctl_name = CTL_UNNUMBERED, .procname = "ftrace_enabled", .data = &ftrace_enabled, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &ftrace_enable_sysctl, }, #endif |
f38f1d2aa trace: add a way ... |
488 489 490 491 492 493 494 495 496 497 |
#ifdef CONFIG_STACK_TRACER { .ctl_name = CTL_UNNUMBERED, .procname = "stack_tracer_enabled", .data = &stack_tracer_enabled, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &stack_trace_sysctl, }, #endif |
944ac4259 ftrace: ftrace du... |
498 499 500 |
#ifdef CONFIG_TRACING { .ctl_name = CTL_UNNUMBERED, |
3299b4dd1 ftrace: sysctl typo |
501 |
.procname = "ftrace_dump_on_oops", |
944ac4259 ftrace: ftrace du... |
502 503 504 505 506 507 |
.data = &ftrace_dump_on_oops, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
a1ef5adb4 remove CONFIG_KMO... |
508 |
#ifdef CONFIG_MODULES |
1da177e4c Linux-2.6.12-rc2 |
509 510 511 512 513 514 515 516 517 518 |
{ .ctl_name = KERN_MODPROBE, .procname = "modprobe", .data = &modprobe_path, .maxlen = KMOD_PATH_LEN, .mode = 0644, .proc_handler = &proc_dostring, .strategy = &sysctl_string, }, #endif |
57ae25086 [PATCH] CONFIG_NE... |
519 |
#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET) |
1da177e4c Linux-2.6.12-rc2 |
520 521 522 |
{ .ctl_name = KERN_HOTPLUG, .procname = "hotplug", |
312c004d3 [PATCH] driver co... |
523 524 |
.data = &uevent_helper, .maxlen = UEVENT_HELPER_PATH_LEN, |
1da177e4c Linux-2.6.12-rc2 |
525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 |
.mode = 0644, .proc_handler = &proc_dostring, .strategy = &sysctl_string, }, #endif #ifdef CONFIG_CHR_DEV_SG { .ctl_name = KERN_SG_BIG_BUFF, .procname = "sg-big-buff", .data = &sg_big_buff, .maxlen = sizeof (int), .mode = 0444, .proc_handler = &proc_dointvec, }, #endif #ifdef CONFIG_BSD_PROCESS_ACCT { .ctl_name = KERN_ACCT, .procname = "acct", .data = &acct_parm, .maxlen = 3*sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
1da177e4c Linux-2.6.12-rc2 |
550 551 552 553 |
#ifdef CONFIG_MAGIC_SYSRQ { .ctl_name = KERN_SYSRQ, .procname = "sysrq", |
5d6f647fc [PATCH] debug: ad... |
554 |
.data = &__sysrq_enabled, |
1da177e4c Linux-2.6.12-rc2 |
555 556 557 558 559 |
.maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
d6f8ff738 [PATCH] cad_pid s... |
560 |
#ifdef CONFIG_PROC_SYSCTL |
1da177e4c Linux-2.6.12-rc2 |
561 |
{ |
1da177e4c Linux-2.6.12-rc2 |
562 |
.procname = "cad_pid", |
9ec52099e [PATCH] replace c... |
563 |
.data = NULL, |
1da177e4c Linux-2.6.12-rc2 |
564 565 |
.maxlen = sizeof (int), .mode = 0600, |
9ec52099e [PATCH] replace c... |
566 |
.proc_handler = &proc_do_cad_pid, |
1da177e4c Linux-2.6.12-rc2 |
567 |
}, |
d6f8ff738 [PATCH] cad_pid s... |
568 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
569 570 571 572 573 574 575 576 577 578 579 580 581 582 |
{ .ctl_name = KERN_MAX_THREADS, .procname = "threads-max", .data = &max_threads, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = KERN_RANDOM, .procname = "random", .mode = 0555, .child = random_table, }, |
1da177e4c Linux-2.6.12-rc2 |
583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 |
{ .ctl_name = KERN_OVERFLOWUID, .procname = "overflowuid", .data = &overflowuid, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &minolduid, .extra2 = &maxolduid, }, { .ctl_name = KERN_OVERFLOWGID, .procname = "overflowgid", .data = &overflowgid, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &minolduid, .extra2 = &maxolduid, }, |
347a8dc3b [PATCH] s390: cle... |
605 |
#ifdef CONFIG_S390 |
1da177e4c Linux-2.6.12-rc2 |
606 607 608 609 610 611 612 613 614 615 |
#ifdef CONFIG_MATHEMU { .ctl_name = KERN_IEEE_EMULATION_WARNINGS, .procname = "ieee_emulation_warnings", .data = &sysctl_ieee_emulation_warnings, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
1da177e4c Linux-2.6.12-rc2 |
616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 |
{ .ctl_name = KERN_S390_USER_DEBUG_LOGGING, .procname = "userprocess_debug", .data = &sysctl_userprocess_debug, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif { .ctl_name = KERN_PIDMAX, .procname = "pid_max", .data = &pid_max, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = sysctl_intvec, .extra1 = &pid_max_min, .extra2 = &pid_max_max, }, { .ctl_name = KERN_PANIC_ON_OOPS, .procname = "panic_on_oops", .data = &panic_on_oops, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
7ef3d2fd1 printk_ratelimit(... |
644 645 646 647 648 649 650 651 652 |
#if defined CONFIG_PRINTK { .ctl_name = KERN_PRINTK, .procname = "printk", .data = &console_loglevel, .maxlen = 4*sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
1da177e4c Linux-2.6.12-rc2 |
653 654 655 |
{ .ctl_name = KERN_PRINTK_RATELIMIT, .procname = "printk_ratelimit", |
717115e1a printk ratelimiti... |
656 |
.data = &printk_ratelimit_state.interval, |
1da177e4c Linux-2.6.12-rc2 |
657 658 659 660 661 662 663 664 |
.maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec_jiffies, .strategy = &sysctl_jiffies, }, { .ctl_name = KERN_PRINTK_RATELIMIT_BURST, .procname = "printk_ratelimit_burst", |
717115e1a printk ratelimiti... |
665 |
.data = &printk_ratelimit_state.burst, |
1da177e4c Linux-2.6.12-rc2 |
666 667 668 669 |
.maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
7ef3d2fd1 printk_ratelimit(... |
670 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 |
{ .ctl_name = KERN_NGROUPS_MAX, .procname = "ngroups_max", .data = &ngroups_max, .maxlen = sizeof (int), .mode = 0444, .proc_handler = &proc_dointvec, }, #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) { .ctl_name = KERN_UNKNOWN_NMI_PANIC, .procname = "unknown_nmi_panic", .data = &unknown_nmi_panic, .maxlen = sizeof (int), .mode = 0644, |
2fbe7b25c [PATCH] i386/x86-... |
686 |
.proc_handler = &proc_dointvec, |
1da177e4c Linux-2.6.12-rc2 |
687 |
}, |
407984f1a [PATCH] x86: Add ... |
688 |
{ |
407984f1a [PATCH] x86: Add ... |
689 690 691 692 693 |
.procname = "nmi_watchdog", .data = &nmi_watchdog_enabled, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_nmi_enabled, |
1da177e4c Linux-2.6.12-rc2 |
694 695 696 697 |
}, #endif #if defined(CONFIG_X86) { |
8da5adda9 [PATCH] x86: Allo... |
698 699 700 701 702 703 704 705 |
.ctl_name = KERN_PANIC_ON_NMI, .procname = "panic_on_unrecovered_nmi", .data = &panic_on_unrecovered_nmi, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, { |
1da177e4c Linux-2.6.12-rc2 |
706 707 708 709 710 711 712 |
.ctl_name = KERN_BOOTLOADER_TYPE, .procname = "bootloader_type", .data = &bootloader_type, .maxlen = sizeof (int), .mode = 0444, .proc_handler = &proc_dointvec, }, |
0741f4d20 [PATCH] x86: add ... |
713 714 715 716 717 718 719 720 |
{ .ctl_name = CTL_UNNUMBERED, .procname = "kstack_depth_to_print", .data = &kstack_depth_to_print, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
6e7c40259 x86: various chan... |
721 722 723 724 725 726 727 728 |
{ .ctl_name = CTL_UNNUMBERED, .procname = "io_delay_type", .data = &io_delay_type, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
1da177e4c Linux-2.6.12-rc2 |
729 |
#endif |
7a9166e3b [PATCH] Fix undef... |
730 |
#if defined(CONFIG_MMU) |
1da177e4c Linux-2.6.12-rc2 |
731 732 733 734 735 736 737 738 |
{ .ctl_name = KERN_RANDOMIZE, .procname = "randomize_va_space", .data = &randomize_va_space, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
7a9166e3b [PATCH] Fix undef... |
739 |
#endif |
0152fb376 [PATCH] s390: spi... |
740 |
#if defined(CONFIG_S390) && defined(CONFIG_SMP) |
951f22d5b [PATCH] s390: spi... |
741 742 743 744 745 746 747 748 749 |
{ .ctl_name = KERN_SPIN_RETRY, .procname = "spin_retry", .data = &spin_retry, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
673d5b43d ACPI: restore CON... |
750 |
#if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86) |
c255d844d [PATCH] suspend-t... |
751 |
{ |
c255d844d [PATCH] suspend-t... |
752 |
.procname = "acpi_video_flags", |
77afcf78a PM: Integrate bee... |
753 |
.data = &acpi_realmode_flags, |
c255d844d [PATCH] suspend-t... |
754 755 |
.maxlen = sizeof (unsigned long), .mode = 0644, |
7f99f06f0 [PATCH] fix acpi_... |
756 |
.proc_handler = &proc_doulongvec_minmax, |
c255d844d [PATCH] suspend-t... |
757 758 |
}, #endif |
d2b176ed8 [IA64] sysctl opt... |
759 760 761 762 763 764 765 766 767 |
#ifdef CONFIG_IA64 { .ctl_name = KERN_IA64_UNALIGNED, .procname = "ignore-unaligned-usertrap", .data = &no_unaligned_warning, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
88fc241f5 [IA64] dump stack... |
768 769 770 771 772 773 774 775 |
{ .ctl_name = CTL_UNNUMBERED, .procname = "unaligned-dump-stack", .data = &unaligned_dump_stack, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
d2b176ed8 [IA64] sysctl opt... |
776 |
#endif |
c4f3b63fe softlockup: add a... |
777 778 779 |
#ifdef CONFIG_DETECT_SOFTLOCKUP { .ctl_name = CTL_UNNUMBERED, |
9c44bc03f softlockup: allow... |
780 781 782 783 |
.procname = "softlockup_panic", .data = &softlockup_panic, .maxlen = sizeof(int), .mode = 0644, |
4dca10a96 softlockup: fix i... |
784 |
.proc_handler = &proc_dointvec_minmax, |
9c44bc03f softlockup: allow... |
785 786 787 788 789 790 |
.strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one, }, { .ctl_name = CTL_UNNUMBERED, |
c4f3b63fe softlockup: add a... |
791 792 |
.procname = "softlockup_thresh", .data = &softlockup_thresh, |
9383d9679 softlockup: fix s... |
793 |
.maxlen = sizeof(int), |
c4f3b63fe softlockup: add a... |
794 |
.mode = 0644, |
baf48f657 softlock: fix fal... |
795 |
.proc_handler = &proc_dosoftlockup_thresh, |
c4f3b63fe softlockup: add a... |
796 |
.strategy = &sysctl_intvec, |
9383d9679 softlockup: fix s... |
797 |
.extra1 = &neg_one, |
c4f3b63fe softlockup: add a... |
798 799 |
.extra2 = &sixty, }, |
e162b39a3 softlockup: decou... |
800 801 802 803 804 805 806 807 808 809 810 811 812 |
#endif #ifdef CONFIG_DETECT_HUNG_TASK { .ctl_name = CTL_UNNUMBERED, .procname = "hung_task_panic", .data = &sysctl_hung_task_panic, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one, }, |
82a1fcb90 softlockup: autom... |
813 814 815 816 |
{ .ctl_name = CTL_UNNUMBERED, .procname = "hung_task_check_count", .data = &sysctl_hung_task_check_count, |
90739081e softlockup: fix s... |
817 |
.maxlen = sizeof(unsigned long), |
82a1fcb90 softlockup: autom... |
818 |
.mode = 0644, |
90739081e softlockup: fix s... |
819 |
.proc_handler = &proc_doulongvec_minmax, |
82a1fcb90 softlockup: autom... |
820 821 822 823 824 825 |
.strategy = &sysctl_intvec, }, { .ctl_name = CTL_UNNUMBERED, .procname = "hung_task_timeout_secs", .data = &sysctl_hung_task_timeout_secs, |
90739081e softlockup: fix s... |
826 |
.maxlen = sizeof(unsigned long), |
82a1fcb90 softlockup: autom... |
827 |
.mode = 0644, |
e162b39a3 softlockup: decou... |
828 |
.proc_handler = &proc_dohung_task_timeout_secs, |
82a1fcb90 softlockup: autom... |
829 830 831 832 833 834 |
.strategy = &sysctl_intvec, }, { .ctl_name = CTL_UNNUMBERED, .procname = "hung_task_warnings", .data = &sysctl_hung_task_warnings, |
90739081e softlockup: fix s... |
835 |
.maxlen = sizeof(unsigned long), |
82a1fcb90 softlockup: autom... |
836 |
.mode = 0644, |
90739081e softlockup: fix s... |
837 |
.proc_handler = &proc_doulongvec_minmax, |
82a1fcb90 softlockup: autom... |
838 839 |
.strategy = &sysctl_intvec, }, |
c4f3b63fe softlockup: add a... |
840 |
#endif |
bebfa1013 [PATCH] x86_64: A... |
841 842 843 844 845 846 847 848 849 850 |
#ifdef CONFIG_COMPAT { .ctl_name = KERN_COMPAT_LOG, .procname = "compat-log", .data = &compat_log, .maxlen = sizeof (int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
23f78d4a0 [PATCH] pi-futex:... |
851 852 853 854 855 856 857 858 859 860 |
#ifdef CONFIG_RT_MUTEXES { .ctl_name = KERN_MAX_LOCK_DEPTH, .procname = "max_lock_depth", .data = &max_lock_depth, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
10a0a8d4e Add common orderl... |
861 862 863 864 865 866 867 868 869 |
{ .ctl_name = CTL_UNNUMBERED, .procname = "poweroff_cmd", .data = &poweroff_cmd, .maxlen = POWEROFF_CMD_PATH_LEN, .mode = 0644, .proc_handler = &proc_dostring, .strategy = &sysctl_string, }, |
0b77f5bfb keys: make the ke... |
870 871 872 873 874 875 876 877 |
#ifdef CONFIG_KEYS { .ctl_name = CTL_UNNUMBERED, .procname = "keys", .mode = 0555, .child = key_sysctls, }, #endif |
31a72bce0 rcu: make rcutort... |
878 879 880 881 882 883 884 885 886 887 |
#ifdef CONFIG_RCU_TORTURE_TEST { .ctl_name = CTL_UNNUMBERED, .procname = "rcutorture_runnable", .data = &rcutorture_runnable, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif |
12e22c5e4 Make the slow wor... |
888 889 890 891 892 893 894 895 |
#ifdef CONFIG_SLOW_WORK { .ctl_name = CTL_UNNUMBERED, .procname = "slow-work", .mode = 0555, .child = slow_work_sysctls, }, #endif |
ed2c12f32 kernel/sysctl.c: ... |
896 897 898 899 |
/* * NOTE: do not add new entries to this table unless you have read * Documentation/sysctl/ctl_unnumbered.txt */ |
1da177e4c Linux-2.6.12-rc2 |
900 901 |
{ .ctl_name = 0 } }; |
d8217f076 sysctl core: Stop... |
902 |
static struct ctl_table vm_table[] = { |
1da177e4c Linux-2.6.12-rc2 |
903 904 905 906 907 908 909 910 911 |
{ .ctl_name = VM_OVERCOMMIT_MEMORY, .procname = "overcommit_memory", .data = &sysctl_overcommit_memory, .maxlen = sizeof(sysctl_overcommit_memory), .mode = 0644, .proc_handler = &proc_dointvec, }, { |
fadd8fbd1 [PATCH] support f... |
912 913 914 915 916 917 918 919 |
.ctl_name = VM_PANIC_ON_OOM, .procname = "panic_on_oom", .data = &sysctl_panic_on_oom, .maxlen = sizeof(sysctl_panic_on_oom), .mode = 0644, .proc_handler = &proc_dointvec, }, { |
fe071d7e8 oom: add oom_kill... |
920 921 922 923 924 925 926 927 |
.ctl_name = CTL_UNNUMBERED, .procname = "oom_kill_allocating_task", .data = &sysctl_oom_kill_allocating_task, .maxlen = sizeof(sysctl_oom_kill_allocating_task), .mode = 0644, .proc_handler = &proc_dointvec, }, { |
fef1bdd68 oom: add sysctl t... |
928 929 930 931 932 933 934 935 |
.ctl_name = CTL_UNNUMBERED, .procname = "oom_dump_tasks", .data = &sysctl_oom_dump_tasks, .maxlen = sizeof(sysctl_oom_dump_tasks), .mode = 0644, .proc_handler = &proc_dointvec, }, { |
1da177e4c Linux-2.6.12-rc2 |
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 |
.ctl_name = VM_OVERCOMMIT_RATIO, .procname = "overcommit_ratio", .data = &sysctl_overcommit_ratio, .maxlen = sizeof(sysctl_overcommit_ratio), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = VM_PAGE_CLUSTER, .procname = "page-cluster", .data = &page_cluster, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = VM_DIRTY_BACKGROUND, .procname = "dirty_background_ratio", .data = &dirty_background_ratio, .maxlen = sizeof(dirty_background_ratio), .mode = 0644, |
2da02997e mm: add dirty_bac... |
957 |
.proc_handler = &dirty_background_ratio_handler, |
1da177e4c Linux-2.6.12-rc2 |
958 959 960 961 962 |
.strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one_hundred, }, { |
2da02997e mm: add dirty_bac... |
963 964 965 966 967 968 969 |
.ctl_name = CTL_UNNUMBERED, .procname = "dirty_background_bytes", .data = &dirty_background_bytes, .maxlen = sizeof(dirty_background_bytes), .mode = 0644, .proc_handler = &dirty_background_bytes_handler, .strategy = &sysctl_intvec, |
fc3501d41 mm: fix dirty_byt... |
970 |
.extra1 = &one_ul, |
2da02997e mm: add dirty_bac... |
971 972 |
}, { |
1da177e4c Linux-2.6.12-rc2 |
973 974 975 976 977 |
.ctl_name = VM_DIRTY_RATIO, .procname = "dirty_ratio", .data = &vm_dirty_ratio, .maxlen = sizeof(vm_dirty_ratio), .mode = 0644, |
04fbfdc14 mm: per device di... |
978 |
.proc_handler = &dirty_ratio_handler, |
1da177e4c Linux-2.6.12-rc2 |
979 980 981 982 983 |
.strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one_hundred, }, { |
2da02997e mm: add dirty_bac... |
984 985 986 987 988 989 990 |
.ctl_name = CTL_UNNUMBERED, .procname = "dirty_bytes", .data = &vm_dirty_bytes, .maxlen = sizeof(vm_dirty_bytes), .mode = 0644, .proc_handler = &dirty_bytes_handler, .strategy = &sysctl_intvec, |
9e4a5bda8 mm: prevent divid... |
991 |
.extra1 = &dirty_bytes_min, |
2da02997e mm: add dirty_bac... |
992 993 |
}, { |
1da177e4c Linux-2.6.12-rc2 |
994 |
.procname = "dirty_writeback_centisecs", |
f6ef94381 [PATCH] Represent... |
995 996 |
.data = &dirty_writeback_interval, .maxlen = sizeof(dirty_writeback_interval), |
1da177e4c Linux-2.6.12-rc2 |
997 998 999 1000 |
.mode = 0644, .proc_handler = &dirty_writeback_centisecs_handler, }, { |
1da177e4c Linux-2.6.12-rc2 |
1001 |
.procname = "dirty_expire_centisecs", |
f6ef94381 [PATCH] Represent... |
1002 1003 |
.data = &dirty_expire_interval, .maxlen = sizeof(dirty_expire_interval), |
1da177e4c Linux-2.6.12-rc2 |
1004 |
.mode = 0644, |
704503d83 mm: fix proc_doin... |
1005 |
.proc_handler = &proc_dointvec, |
1da177e4c Linux-2.6.12-rc2 |
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 |
}, { .ctl_name = VM_NR_PDFLUSH_THREADS, .procname = "nr_pdflush_threads", .data = &nr_pdflush_threads, .maxlen = sizeof nr_pdflush_threads, .mode = 0444 /* read-only*/, .proc_handler = &proc_dointvec, }, { .ctl_name = VM_SWAPPINESS, .procname = "swappiness", .data = &vm_swappiness, .maxlen = sizeof(vm_swappiness), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one_hundred, }, #ifdef CONFIG_HUGETLB_PAGE { |
1da177e4c Linux-2.6.12-rc2 |
1028 |
.procname = "nr_hugepages", |
e5ff21594 hugetlb: multiple... |
1029 |
.data = NULL, |
1da177e4c Linux-2.6.12-rc2 |
1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 |
.maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &hugetlb_sysctl_handler, .extra1 = (void *)&hugetlb_zero, .extra2 = (void *)&hugetlb_infinity, }, { .ctl_name = VM_HUGETLB_GROUP, .procname = "hugetlb_shm_group", .data = &sysctl_hugetlb_shm_group, .maxlen = sizeof(gid_t), .mode = 0644, .proc_handler = &proc_dointvec, }, |
396faf030 Allow huge page a... |
1044 1045 1046 1047 1048 1049 1050 1051 |
{ .ctl_name = CTL_UNNUMBERED, .procname = "hugepages_treat_as_movable", .data = &hugepages_treat_as_movable, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &hugetlb_treat_movable_handler, }, |
54f9f80d6 hugetlb: Add huge... |
1052 1053 |
{ .ctl_name = CTL_UNNUMBERED, |
d1c3fb1f8 hugetlb: introduc... |
1054 |
.procname = "nr_overcommit_hugepages", |
e5ff21594 hugetlb: multiple... |
1055 1056 |
.data = NULL, .maxlen = sizeof(unsigned long), |
d1c3fb1f8 hugetlb: introduc... |
1057 |
.mode = 0644, |
a3d0c6aa1 hugetlb: add lock... |
1058 |
.proc_handler = &hugetlb_overcommit_handler, |
e5ff21594 hugetlb: multiple... |
1059 1060 |
.extra1 = (void *)&hugetlb_zero, .extra2 = (void *)&hugetlb_infinity, |
d1c3fb1f8 hugetlb: introduc... |
1061 |
}, |
1da177e4c Linux-2.6.12-rc2 |
1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 |
#endif { .ctl_name = VM_LOWMEM_RESERVE_RATIO, .procname = "lowmem_reserve_ratio", .data = &sysctl_lowmem_reserve_ratio, .maxlen = sizeof(sysctl_lowmem_reserve_ratio), .mode = 0644, .proc_handler = &lowmem_reserve_ratio_sysctl_handler, .strategy = &sysctl_intvec, }, { |
9d0243bca [PATCH] drop-page... |
1073 1074 1075 1076 1077 1078 1079 1080 1081 |
.ctl_name = VM_DROP_PAGECACHE, .procname = "drop_caches", .data = &sysctl_drop_caches, .maxlen = sizeof(int), .mode = 0644, .proc_handler = drop_caches_sysctl_handler, .strategy = &sysctl_intvec, }, { |
1da177e4c Linux-2.6.12-rc2 |
1082 1083 1084 1085 1086 1087 1088 1089 1090 |
.ctl_name = VM_MIN_FREE_KBYTES, .procname = "min_free_kbytes", .data = &min_free_kbytes, .maxlen = sizeof(min_free_kbytes), .mode = 0644, .proc_handler = &min_free_kbytes_sysctl_handler, .strategy = &sysctl_intvec, .extra1 = &zero, }, |
8ad4b1fb8 [PATCH] Make high... |
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 |
{ .ctl_name = VM_PERCPU_PAGELIST_FRACTION, .procname = "percpu_pagelist_fraction", .data = &percpu_pagelist_fraction, .maxlen = sizeof(percpu_pagelist_fraction), .mode = 0644, .proc_handler = &percpu_pagelist_fraction_sysctl_handler, .strategy = &sysctl_intvec, .extra1 = &min_percpu_pagelist_fract, }, |
1da177e4c Linux-2.6.12-rc2 |
1101 1102 1103 1104 1105 1106 1107 1108 1109 |
#ifdef CONFIG_MMU { .ctl_name = VM_MAX_MAP_COUNT, .procname = "max_map_count", .data = &sysctl_max_map_count, .maxlen = sizeof(sysctl_max_map_count), .mode = 0644, .proc_handler = &proc_dointvec }, |
dd8632a12 NOMMU: Make mmap ... |
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 |
#else { .ctl_name = CTL_UNNUMBERED, .procname = "nr_trim_pages", .data = &sysctl_nr_trim_pages, .maxlen = sizeof(sysctl_nr_trim_pages), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &zero, }, |
1da177e4c Linux-2.6.12-rc2 |
1121 1122 1123 1124 1125 1126 1127 |
#endif { .ctl_name = VM_LAPTOP_MODE, .procname = "laptop_mode", .data = &laptop_mode, .maxlen = sizeof(laptop_mode), .mode = 0644, |
ed5b43f15 [PATCH] Represent... |
1128 1129 |
.proc_handler = &proc_dointvec_jiffies, .strategy = &sysctl_jiffies, |
1da177e4c Linux-2.6.12-rc2 |
1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 |
}, { .ctl_name = VM_BLOCK_DUMP, .procname = "block_dump", .data = &block_dump, .maxlen = sizeof(block_dump), .mode = 0644, .proc_handler = &proc_dointvec, .strategy = &sysctl_intvec, .extra1 = &zero, }, { .ctl_name = VM_VFS_CACHE_PRESSURE, .procname = "vfs_cache_pressure", .data = &sysctl_vfs_cache_pressure, .maxlen = sizeof(sysctl_vfs_cache_pressure), .mode = 0644, .proc_handler = &proc_dointvec, .strategy = &sysctl_intvec, .extra1 = &zero, }, #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT { .ctl_name = VM_LEGACY_VA_LAYOUT, .procname = "legacy_va_layout", .data = &sysctl_legacy_va_layout, .maxlen = sizeof(sysctl_legacy_va_layout), .mode = 0644, .proc_handler = &proc_dointvec, .strategy = &sysctl_intvec, .extra1 = &zero, }, #endif |
1743660b9 [PATCH] Zone recl... |
1163 1164 1165 1166 1167 1168 1169 1170 |
#ifdef CONFIG_NUMA { .ctl_name = VM_ZONE_RECLAIM_MODE, .procname = "zone_reclaim_mode", .data = &zone_reclaim_mode, .maxlen = sizeof(zone_reclaim_mode), .mode = 0644, .proc_handler = &proc_dointvec, |
c84db23c6 [PATCH] zone_recl... |
1171 1172 |
.strategy = &sysctl_intvec, .extra1 = &zero, |
1743660b9 [PATCH] Zone recl... |
1173 |
}, |
9614634fe [PATCH] ZVC/zone_... |
1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 |
{ .ctl_name = VM_MIN_UNMAPPED, .procname = "min_unmapped_ratio", .data = &sysctl_min_unmapped_ratio, .maxlen = sizeof(sysctl_min_unmapped_ratio), .mode = 0644, .proc_handler = &sysctl_min_unmapped_ratio_sysctl_handler, .strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one_hundred, }, |
0ff38490c [PATCH] zone_recl... |
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 |
{ .ctl_name = VM_MIN_SLAB, .procname = "min_slab_ratio", .data = &sysctl_min_slab_ratio, .maxlen = sizeof(sysctl_min_slab_ratio), .mode = 0644, .proc_handler = &sysctl_min_slab_ratio_sysctl_handler, .strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one_hundred, }, |
1743660b9 [PATCH] Zone recl... |
1196 |
#endif |
77461ab33 Make vm statistic... |
1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 |
#ifdef CONFIG_SMP { .ctl_name = CTL_UNNUMBERED, .procname = "stat_interval", .data = &sysctl_stat_interval, .maxlen = sizeof(sysctl_stat_interval), .mode = 0644, .proc_handler = &proc_dointvec_jiffies, .strategy = &sysctl_jiffies, }, #endif |
ed0321895 security: Protect... |
1208 1209 1210 1211 1212 1213 1214 1215 1216 |
#ifdef CONFIG_SECURITY { .ctl_name = CTL_UNNUMBERED, .procname = "mmap_min_addr", .data = &mmap_min_addr, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &proc_doulongvec_minmax, }, |
8daec965e Fix missing numa_... |
1217 |
#endif |
f0c0b2b80 change zonelist o... |
1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 |
#ifdef CONFIG_NUMA { .ctl_name = CTL_UNNUMBERED, .procname = "numa_zonelist_order", .data = &numa_zonelist_order, .maxlen = NUMA_ZONELIST_ORDER_LEN, .mode = 0644, .proc_handler = &numa_zonelist_order_handler, .strategy = &sysctl_string, }, #endif |
2b8232ce5 minimal build fix... |
1229 |
#if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ |
5c36e6578 sysctl: Support v... |
1230 |
(defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) |
e6e5494cb [PATCH] vdso: ran... |
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 |
{ .ctl_name = VM_VDSO_ENABLED, .procname = "vdso_enabled", .data = &vdso_enabled, .maxlen = sizeof(vdso_enabled), .mode = 0644, .proc_handler = &proc_dointvec, .strategy = &sysctl_intvec, .extra1 = &zero, }, #endif |
195cf453d mm/page-writeback... |
1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 |
#ifdef CONFIG_HIGHMEM { .ctl_name = CTL_UNNUMBERED, .procname = "highmem_is_dirtyable", .data = &vm_highmem_is_dirtyable, .maxlen = sizeof(vm_highmem_is_dirtyable), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &one, }, #endif |
4be6f6bb6 mm: move the scan... |
1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 |
#ifdef CONFIG_UNEVICTABLE_LRU { .ctl_name = CTL_UNNUMBERED, .procname = "scan_unevictable_pages", .data = &scan_unevictable_pages, .maxlen = sizeof(scan_unevictable_pages), .mode = 0644, .proc_handler = &scan_unevictable_handler, }, #endif |
2be7fe075 sysctl.c: add tex... |
1265 1266 1267 1268 |
/* * NOTE: do not add new entries to this table unless you have read * Documentation/sysctl/ctl_unnumbered.txt */ |
1da177e4c Linux-2.6.12-rc2 |
1269 1270 |
{ .ctl_name = 0 } }; |
2abc26fc6 [PATCH] sysctl: c... |
1271 |
#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) |
d8217f076 sysctl core: Stop... |
1272 |
static struct ctl_table binfmt_misc_table[] = { |
2abc26fc6 [PATCH] sysctl: c... |
1273 1274 1275 |
{ .ctl_name = 0 } }; #endif |
d8217f076 sysctl core: Stop... |
1276 |
static struct ctl_table fs_table[] = { |
1da177e4c Linux-2.6.12-rc2 |
1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 |
{ .ctl_name = FS_NRINODE, .procname = "inode-nr", .data = &inodes_stat, .maxlen = 2*sizeof(int), .mode = 0444, .proc_handler = &proc_dointvec, }, { .ctl_name = FS_STATINODE, .procname = "inode-state", .data = &inodes_stat, .maxlen = 7*sizeof(int), .mode = 0444, .proc_handler = &proc_dointvec, }, { |
1da177e4c Linux-2.6.12-rc2 |
1294 1295 1296 1297 |
.procname = "file-nr", .data = &files_stat, .maxlen = 3*sizeof(int), .mode = 0444, |
529bf6be5 [PATCH] fix file ... |
1298 |
.proc_handler = &proc_nr_files, |
1da177e4c Linux-2.6.12-rc2 |
1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 |
}, { .ctl_name = FS_MAXFILE, .procname = "file-max", .data = &files_stat.max_files, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, { |
9cfe015aa get rid of NR_OPE... |
1309 1310 1311 1312 1313 |
.ctl_name = CTL_UNNUMBERED, .procname = "nr_open", .data = &sysctl_nr_open, .maxlen = sizeof(int), .mode = 0644, |
eceea0b3d [PATCH] avoid mul... |
1314 1315 1316 |
.proc_handler = &proc_dointvec_minmax, .extra1 = &sysctl_nr_open_min, .extra2 = &sysctl_nr_open_max, |
9cfe015aa get rid of NR_OPE... |
1317 1318 |
}, { |
1da177e4c Linux-2.6.12-rc2 |
1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 |
.ctl_name = FS_DENTRY, .procname = "dentry-state", .data = &dentry_stat, .maxlen = 6*sizeof(int), .mode = 0444, .proc_handler = &proc_dointvec, }, { .ctl_name = FS_OVERFLOWUID, .procname = "overflowuid", .data = &fs_overflowuid, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &minolduid, .extra2 = &maxolduid, }, { .ctl_name = FS_OVERFLOWGID, .procname = "overflowgid", .data = &fs_overflowgid, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &minolduid, .extra2 = &maxolduid, }, |
bfcd17a6c Configure out fil... |
1348 |
#ifdef CONFIG_FILE_LOCKING |
1da177e4c Linux-2.6.12-rc2 |
1349 1350 1351 1352 1353 1354 1355 1356 |
{ .ctl_name = FS_LEASES, .procname = "leases-enable", .data = &leases_enable, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, |
bfcd17a6c Configure out fil... |
1357 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 |
#ifdef CONFIG_DNOTIFY { .ctl_name = FS_DIR_NOTIFY, .procname = "dir-notify-enable", .data = &dir_notify_enable, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec, }, #endif #ifdef CONFIG_MMU |
bfcd17a6c Configure out fil... |
1369 |
#ifdef CONFIG_FILE_LOCKING |
1da177e4c Linux-2.6.12-rc2 |
1370 1371 1372 1373 1374 1375 |
{ .ctl_name = FS_LEASE_TIME, .procname = "lease-break-time", .data = &lease_break_time, .maxlen = sizeof(int), .mode = 0644, |
8e654fba4 sysctl: fix suid_... |
1376 |
.proc_handler = &proc_dointvec, |
1da177e4c Linux-2.6.12-rc2 |
1377 |
}, |
bfcd17a6c Configure out fil... |
1378 |
#endif |
ebf3f09c6 Configure out AIO... |
1379 |
#ifdef CONFIG_AIO |
1da177e4c Linux-2.6.12-rc2 |
1380 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1381 1382 1383 1384 |
.procname = "aio-nr", .data = &aio_nr, .maxlen = sizeof(aio_nr), .mode = 0444, |
d55b5fdaf [PATCH] aio: remo... |
1385 |
.proc_handler = &proc_doulongvec_minmax, |
1da177e4c Linux-2.6.12-rc2 |
1386 1387 |
}, { |
1da177e4c Linux-2.6.12-rc2 |
1388 1389 1390 1391 |
.procname = "aio-max-nr", .data = &aio_max_nr, .maxlen = sizeof(aio_max_nr), .mode = 0644, |
d55b5fdaf [PATCH] aio: remo... |
1392 |
.proc_handler = &proc_doulongvec_minmax, |
1da177e4c Linux-2.6.12-rc2 |
1393 |
}, |
ebf3f09c6 Configure out AIO... |
1394 |
#endif /* CONFIG_AIO */ |
2d9048e20 [PATCH] inotify (... |
1395 |
#ifdef CONFIG_INOTIFY_USER |
0399cb08c [PATCH] inotify: ... |
1396 1397 1398 1399 1400 1401 1402 |
{ .ctl_name = FS_INOTIFY, .procname = "inotify", .mode = 0555, .child = inotify_table, }, #endif |
7ef9964e6 epoll: introduce ... |
1403 1404 1405 1406 1407 1408 1409 |
#ifdef CONFIG_EPOLL { .procname = "epoll", .mode = 0555, .child = epoll_table, }, #endif |
1da177e4c Linux-2.6.12-rc2 |
1410 |
#endif |
d6e711448 [PATCH] setuid co... |
1411 1412 1413 1414 1415 1416 |
{ .ctl_name = KERN_SETUID_DUMPABLE, .procname = "suid_dumpable", .data = &suid_dumpable, .maxlen = sizeof(int), .mode = 0644, |
8e654fba4 sysctl: fix suid_... |
1417 1418 1419 1420 |
.proc_handler = &proc_dointvec_minmax, .strategy = &sysctl_intvec, .extra1 = &zero, .extra2 = &two, |
d6e711448 [PATCH] setuid co... |
1421 |
}, |
2abc26fc6 [PATCH] sysctl: c... |
1422 1423 1424 1425 1426 1427 1428 1429 |
#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) { .ctl_name = CTL_UNNUMBERED, .procname = "binfmt_misc", .mode = 0555, .child = binfmt_misc_table, }, #endif |
2be7fe075 sysctl.c: add tex... |
1430 1431 1432 |
/* * NOTE: do not add new entries to this table unless you have read * Documentation/sysctl/ctl_unnumbered.txt |
2be7fe075 sysctl.c: add tex... |
1433 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
1434 1435 |
{ .ctl_name = 0 } }; |
d8217f076 sysctl core: Stop... |
1436 |
static struct ctl_table debug_table[] = { |
d0c3d534a [POWERPC] Impleme... |
1437 |
#if defined(CONFIG_X86) || defined(CONFIG_PPC) |
abd4f7505 x86: i386-show-un... |
1438 1439 1440 1441 1442 1443 1444 1445 1446 |
{ .ctl_name = CTL_UNNUMBERED, .procname = "exception-trace", .data = &show_unhandled_signals, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec }, #endif |
1da177e4c Linux-2.6.12-rc2 |
1447 1448 |
{ .ctl_name = 0 } }; |
d8217f076 sysctl core: Stop... |
1449 |
static struct ctl_table dev_table[] = { |
1da177e4c Linux-2.6.12-rc2 |
1450 |
{ .ctl_name = 0 } |
0eeca2830 [PATCH] inotify |
1451 |
}; |
1da177e4c Linux-2.6.12-rc2 |
1452 |
|
330d57fb9 [PATCH] Fix sysct... |
1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 |
static DEFINE_SPINLOCK(sysctl_lock); /* called under sysctl_lock */ static int use_table(struct ctl_table_header *p) { if (unlikely(p->unregistering)) return 0; p->used++; return 1; } /* called under sysctl_lock */ static void unuse_table(struct ctl_table_header *p) { if (!--p->used) if (unlikely(p->unregistering)) complete(p->unregistering); } /* called under sysctl_lock, will reacquire if has to wait */ static void start_unregistering(struct ctl_table_header *p) { /* * if p->used is 0, nobody will ever touch that entry again; * we'll eliminate all paths to it before dropping sysctl_lock */ if (unlikely(p->used)) { struct completion wait; init_completion(&wait); p->unregistering = &wait; spin_unlock(&sysctl_lock); wait_for_completion(&wait); spin_lock(&sysctl_lock); |
f7e6ced40 [PATCH] allow del... |
1486 1487 1488 |
} else { /* anything non-NULL; we'll never dereference it */ p->unregistering = ERR_PTR(-EINVAL); |
330d57fb9 [PATCH] Fix sysct... |
1489 1490 1491 1492 1493 1494 1495 |
} /* * do not remove from the list until nobody holds it; walking the * list in do_sysctl() relies on that. */ list_del_init(&p->ctl_entry); } |
f7e6ced40 [PATCH] allow del... |
1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 |
void sysctl_head_get(struct ctl_table_header *head) { spin_lock(&sysctl_lock); head->count++; spin_unlock(&sysctl_lock); } void sysctl_head_put(struct ctl_table_header *head) { spin_lock(&sysctl_lock); if (!--head->count) kfree(head); spin_unlock(&sysctl_lock); } struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *head) { if (!head) BUG(); spin_lock(&sysctl_lock); if (!use_table(head)) head = ERR_PTR(-ENOENT); spin_unlock(&sysctl_lock); return head; } |
805b5d5e0 [PATCH] sysctl: f... |
1521 1522 1523 1524 1525 1526 1527 1528 |
void sysctl_head_finish(struct ctl_table_header *head) { if (!head) return; spin_lock(&sysctl_lock); unuse_table(head); spin_unlock(&sysctl_lock); } |
734550921 [PATCH] beginning... |
1529 1530 1531 1532 1533 1534 1535 1536 |
static struct ctl_table_set * lookup_header_set(struct ctl_table_root *root, struct nsproxy *namespaces) { struct ctl_table_set *set = &root->default_set; if (root->lookup) set = root->lookup(root, namespaces); return set; } |
e51b6ba07 sysctl: Infrastru... |
1537 1538 |
static struct list_head * lookup_header_list(struct ctl_table_root *root, struct nsproxy *namespaces) |
805b5d5e0 [PATCH] sysctl: f... |
1539 |
{ |
734550921 [PATCH] beginning... |
1540 1541 |
struct ctl_table_set *set = lookup_header_set(root, namespaces); return &set->list; |
e51b6ba07 sysctl: Infrastru... |
1542 1543 1544 1545 1546 1547 1548 |
} struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces, struct ctl_table_header *prev) { struct ctl_table_root *root; struct list_head *header_list; |
805b5d5e0 [PATCH] sysctl: f... |
1549 1550 |
struct ctl_table_header *head; struct list_head *tmp; |
e51b6ba07 sysctl: Infrastru... |
1551 |
|
805b5d5e0 [PATCH] sysctl: f... |
1552 1553 |
spin_lock(&sysctl_lock); if (prev) { |
e51b6ba07 sysctl: Infrastru... |
1554 |
head = prev; |
805b5d5e0 [PATCH] sysctl: f... |
1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 |
tmp = &prev->ctl_entry; unuse_table(prev); goto next; } tmp = &root_table_header.ctl_entry; for (;;) { head = list_entry(tmp, struct ctl_table_header, ctl_entry); if (!use_table(head)) goto next; spin_unlock(&sysctl_lock); return head; next: |
e51b6ba07 sysctl: Infrastru... |
1568 |
root = head->root; |
805b5d5e0 [PATCH] sysctl: f... |
1569 |
tmp = tmp->next; |
e51b6ba07 sysctl: Infrastru... |
1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 |
header_list = lookup_header_list(root, namespaces); if (tmp != header_list) continue; do { root = list_entry(root->root_list.next, struct ctl_table_root, root_list); if (root == &sysctl_table_root) goto out; header_list = lookup_header_list(root, namespaces); } while (list_empty(header_list)); tmp = header_list->next; |
805b5d5e0 [PATCH] sysctl: f... |
1582 |
} |
e51b6ba07 sysctl: Infrastru... |
1583 |
out: |
805b5d5e0 [PATCH] sysctl: f... |
1584 1585 1586 |
spin_unlock(&sysctl_lock); return NULL; } |
e51b6ba07 sysctl: Infrastru... |
1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 |
struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev) { return __sysctl_head_next(current->nsproxy, prev); } void register_sysctl_root(struct ctl_table_root *root) { spin_lock(&sysctl_lock); list_add_tail(&root->root_list, &sysctl_table_root.root_list); spin_unlock(&sysctl_lock); } |
b89a81712 [PATCH] sysctl: A... |
1598 |
#ifdef CONFIG_SYSCTL_SYSCALL |
2c4c7155f sysctl: clean fro... |
1599 |
/* Perform the actual read/write of a sysctl table entry. */ |
d7321cd62 sysctl: add the -... |
1600 1601 |
static int do_sysctl_strategy(struct ctl_table_root *root, struct ctl_table *table, |
2c4c7155f sysctl: clean fro... |
1602 1603 1604 1605 1606 1607 |
void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen) { int op = 0, rc; if (oldval) |
e6305c43e [PATCH] sanitize ... |
1608 |
op |= MAY_READ; |
2c4c7155f sysctl: clean fro... |
1609 |
if (newval) |
e6305c43e [PATCH] sanitize ... |
1610 |
op |= MAY_WRITE; |
d7321cd62 sysctl: add the -... |
1611 |
if (sysctl_perm(root, table, op)) |
2c4c7155f sysctl: clean fro... |
1612 1613 1614 |
return -EPERM; if (table->strategy) { |
f221e726b sysctl: simplify ... |
1615 |
rc = table->strategy(table, oldval, oldlenp, newval, newlen); |
2c4c7155f sysctl: clean fro... |
1616 1617 1618 1619 1620 1621 1622 1623 1624 |
if (rc < 0) return rc; if (rc > 0) return 0; } /* If there is no strategy routine, or if the strategy returns * zero, proceed with automatic r/w */ if (table->data && table->maxlen) { |
f221e726b sysctl: simplify ... |
1625 |
rc = sysctl_data(table, oldval, oldlenp, newval, newlen); |
2c4c7155f sysctl: clean fro... |
1626 1627 1628 1629 1630 1631 1632 1633 1634 |
if (rc < 0) return rc; } return 0; } static int parse_table(int __user *name, int nlen, void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen, |
d7321cd62 sysctl: add the -... |
1635 |
struct ctl_table_root *root, |
2c4c7155f sysctl: clean fro... |
1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 |
struct ctl_table *table) { int n; repeat: if (!nlen) return -ENOTDIR; if (get_user(n, name)) return -EFAULT; for ( ; table->ctl_name || table->procname; table++) { if (!table->ctl_name) continue; if (n == table->ctl_name) { int error; if (table->child) { |
e6305c43e [PATCH] sanitize ... |
1650 |
if (sysctl_perm(root, table, MAY_EXEC)) |
2c4c7155f sysctl: clean fro... |
1651 1652 1653 1654 1655 1656 |
return -EPERM; name++; nlen--; table = table->child; goto repeat; } |
f221e726b sysctl: simplify ... |
1657 |
error = do_sysctl_strategy(root, table, |
2c4c7155f sysctl: clean fro... |
1658 1659 1660 1661 1662 1663 1664 |
oldval, oldlenp, newval, newlen); return error; } } return -ENOTDIR; } |
1da177e4c Linux-2.6.12-rc2 |
1665 1666 1667 |
int do_sysctl(int __user *name, int nlen, void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen) { |
805b5d5e0 [PATCH] sysctl: f... |
1668 |
struct ctl_table_header *head; |
330d57fb9 [PATCH] Fix sysct... |
1669 |
int error = -ENOTDIR; |
1da177e4c Linux-2.6.12-rc2 |
1670 1671 1672 1673 1674 1675 1676 1677 |
if (nlen <= 0 || nlen >= CTL_MAXNAME) return -ENOTDIR; if (oldval) { int old_len; if (!oldlenp || get_user(old_len, oldlenp)) return -EFAULT; } |
330d57fb9 [PATCH] Fix sysct... |
1678 |
|
805b5d5e0 [PATCH] sysctl: f... |
1679 1680 |
for (head = sysctl_head_next(NULL); head; head = sysctl_head_next(head)) { |
330d57fb9 [PATCH] Fix sysct... |
1681 |
error = parse_table(name, nlen, oldval, oldlenp, |
d7321cd62 sysctl: add the -... |
1682 1683 |
newval, newlen, head->root, head->ctl_table); |
805b5d5e0 [PATCH] sysctl: f... |
1684 1685 |
if (error != -ENOTDIR) { sysctl_head_finish(head); |
330d57fb9 [PATCH] Fix sysct... |
1686 |
break; |
805b5d5e0 [PATCH] sysctl: f... |
1687 1688 |
} } |
330d57fb9 [PATCH] Fix sysct... |
1689 |
return error; |
1da177e4c Linux-2.6.12-rc2 |
1690 |
} |
1e7bfb213 [CVE-2009-0029] S... |
1691 |
SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args) |
1da177e4c Linux-2.6.12-rc2 |
1692 1693 1694 1695 1696 1697 |
{ struct __sysctl_args tmp; int error; if (copy_from_user(&tmp, args, sizeof(tmp))) return -EFAULT; |
7058cb02d sysctl: deprecate... |
1698 1699 1700 |
error = deprecated_sysctl_warning(&tmp); if (error) goto out; |
1da177e4c Linux-2.6.12-rc2 |
1701 1702 1703 1704 |
lock_kernel(); error = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, tmp.oldlenp, tmp.newval, tmp.newlen); unlock_kernel(); |
7058cb02d sysctl: deprecate... |
1705 |
out: |
1da177e4c Linux-2.6.12-rc2 |
1706 1707 |
return error; } |
b89a81712 [PATCH] sysctl: A... |
1708 |
#endif /* CONFIG_SYSCTL_SYSCALL */ |
1da177e4c Linux-2.6.12-rc2 |
1709 1710 |
/* |
1ff007eb8 [PATCH] sysctl: a... |
1711 |
* sysctl_perm does NOT grant the superuser all rights automatically, because |
1da177e4c Linux-2.6.12-rc2 |
1712 1713 1714 1715 1716 |
* some sysctl variables are readonly even to root. */ static int test_perm(int mode, int op) { |
76aac0e9a CRED: Wrap task c... |
1717 |
if (!current_euid()) |
1da177e4c Linux-2.6.12-rc2 |
1718 1719 1720 |
mode >>= 6; else if (in_egroup_p(0)) mode >>= 3; |
e6305c43e [PATCH] sanitize ... |
1721 |
if ((op & ~mode & (MAY_READ|MAY_WRITE|MAY_EXEC)) == 0) |
1da177e4c Linux-2.6.12-rc2 |
1722 1723 1724 |
return 0; return -EACCES; } |
d7321cd62 sysctl: add the -... |
1725 |
int sysctl_perm(struct ctl_table_root *root, struct ctl_table *table, int op) |
1da177e4c Linux-2.6.12-rc2 |
1726 1727 |
{ int error; |
d7321cd62 sysctl: add the -... |
1728 |
int mode; |
e6305c43e [PATCH] sanitize ... |
1729 |
error = security_sysctl(table, op & (MAY_READ | MAY_WRITE | MAY_EXEC)); |
1da177e4c Linux-2.6.12-rc2 |
1730 1731 |
if (error) return error; |
d7321cd62 sysctl: add the -... |
1732 1733 1734 1735 1736 1737 1738 |
if (root->permissions) mode = root->permissions(root, current->nsproxy, table); else mode = table->mode; return test_perm(mode, op); |
1da177e4c Linux-2.6.12-rc2 |
1739 |
} |
d912b0cc1 [PATCH] sysctl: a... |
1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 |
static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table) { for (; table->ctl_name || table->procname; table++) { table->parent = parent; if (table->child) sysctl_set_parent(table, table->child); } } static __init int sysctl_init(void) { sysctl_set_parent(NULL, root_table); |
88f458e4b sysctl: allow emb... |
1752 1753 1754 1755 1756 1757 |
#ifdef CONFIG_SYSCTL_SYSCALL_CHECK { int err; err = sysctl_check_table(current->nsproxy, root_table); } #endif |
d912b0cc1 [PATCH] sysctl: a... |
1758 1759 1760 1761 |
return 0; } core_initcall(sysctl_init); |
bfbcf0347 lost sysctl fix |
1762 1763 |
static struct ctl_table *is_branch_in(struct ctl_table *branch, struct ctl_table *table) |
ae7edecc9 [PATCH] sysctl: k... |
1764 1765 1766 1767 1768 1769 |
{ struct ctl_table *p; const char *s = branch->procname; /* branch should have named subdirectory as its first element */ if (!s || !branch->child) |
bfbcf0347 lost sysctl fix |
1770 |
return NULL; |
ae7edecc9 [PATCH] sysctl: k... |
1771 1772 1773 |
/* ... and nothing else */ if (branch[1].procname || branch[1].ctl_name) |
bfbcf0347 lost sysctl fix |
1774 |
return NULL; |
ae7edecc9 [PATCH] sysctl: k... |
1775 1776 1777 1778 1779 1780 |
/* table should contain subdirectory with the same name */ for (p = table; p->procname || p->ctl_name; p++) { if (!p->child) continue; if (p->procname && strcmp(p->procname, s) == 0) |
bfbcf0347 lost sysctl fix |
1781 |
return p; |
ae7edecc9 [PATCH] sysctl: k... |
1782 |
} |
bfbcf0347 lost sysctl fix |
1783 |
return NULL; |
ae7edecc9 [PATCH] sysctl: k... |
1784 1785 1786 1787 1788 1789 |
} /* see if attaching q to p would be an improvement */ static void try_attach(struct ctl_table_header *p, struct ctl_table_header *q) { struct ctl_table *to = p->ctl_table, *by = q->ctl_table; |
bfbcf0347 lost sysctl fix |
1790 |
struct ctl_table *next; |
ae7edecc9 [PATCH] sysctl: k... |
1791 1792 |
int is_better = 0; int not_in_parent = !p->attached_by; |
bfbcf0347 lost sysctl fix |
1793 |
while ((next = is_branch_in(by, to)) != NULL) { |
ae7edecc9 [PATCH] sysctl: k... |
1794 1795 1796 1797 1798 |
if (by == q->attached_by) is_better = 1; if (to == p->attached_by) not_in_parent = 1; by = by->child; |
bfbcf0347 lost sysctl fix |
1799 |
to = next->child; |
ae7edecc9 [PATCH] sysctl: k... |
1800 1801 1802 1803 1804 1805 1806 1807 |
} if (is_better && not_in_parent) { q->attached_by = by; q->attached_to = to; q->parent = p; } } |
1da177e4c Linux-2.6.12-rc2 |
1808 |
/** |
e51b6ba07 sysctl: Infrastru... |
1809 1810 1811 |
* __register_sysctl_paths - register a sysctl hierarchy * @root: List of sysctl headers to register on * @namespaces: Data to compute which lists of sysctl entries are visible |
29e796fd4 sysctl: Add regis... |
1812 |
* @path: The path to the directory the sysctl table is in. |
1da177e4c Linux-2.6.12-rc2 |
1813 |
* @table: the top-level table structure |
1da177e4c Linux-2.6.12-rc2 |
1814 1815 |
* * Register a sysctl table hierarchy. @table should be a filled in ctl_table |
29e796fd4 sysctl: Add regis... |
1816 |
* array. A completely 0 filled entry terminates the table. |
1da177e4c Linux-2.6.12-rc2 |
1817 |
* |
d8217f076 sysctl core: Stop... |
1818 |
* The members of the &struct ctl_table structure are used as follows: |
1da177e4c Linux-2.6.12-rc2 |
1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 |
* * ctl_name - This is the numeric sysctl value used by sysctl(2). The number * must be unique within that level of sysctl * * procname - the name of the sysctl file under /proc/sys. Set to %NULL to not * enter a sysctl file * * data - a pointer to data for use by proc_handler * * maxlen - the maximum size in bytes of the data * * mode - the file permissions for the /proc/sys file, and for sysctl(2) * * child - a pointer to the child sysctl table if this entry is a directory, or * %NULL. * * proc_handler - the text handler routine (described below) * * strategy - the strategy routine (described below) * * de - for internal use by the sysctl routines * * extra1, extra2 - extra pointers usable by the proc handler routines * * Leaf nodes in the sysctl tree will be represented by a single file * under /proc; non-leaf nodes will be represented by directories. * * sysctl(2) can automatically manage read and write requests through * the sysctl table. The data and maxlen fields of the ctl_table * struct enable minimal validation of the values being written to be * performed, and the mode field allows minimal authentication. * * More sophisticated management can be enabled by the provision of a * strategy routine with the table entry. This will be called before * any automatic read or write of the data is performed. * * The strategy routine may return * * < 0 - Error occurred (error is passed to user process) * * 0 - OK - proceed with automatic read or write. * * > 0 - OK - read or write has been done by the strategy routine, so * return immediately. * * There must be a proc_handler routine for any terminal nodes * mirrored under /proc/sys (non-terminals are handled by a built-in * directory handler). Several default handlers are available to * cover common cases - * * proc_dostring(), proc_dointvec(), proc_dointvec_jiffies(), * proc_dointvec_userhz_jiffies(), proc_dointvec_minmax(), * proc_doulongvec_ms_jiffies_minmax(), proc_doulongvec_minmax() * * It is the handler's job to read the input buffer from user memory * and process it. The handler should return 0 on success. * * This routine returns %NULL on a failure to register, and a pointer * to the table header on success. */ |
e51b6ba07 sysctl: Infrastru... |
1879 1880 1881 1882 |
struct ctl_table_header *__register_sysctl_paths( struct ctl_table_root *root, struct nsproxy *namespaces, const struct ctl_path *path, struct ctl_table *table) |
1da177e4c Linux-2.6.12-rc2 |
1883 |
{ |
29e796fd4 sysctl: Add regis... |
1884 1885 1886 |
struct ctl_table_header *header; struct ctl_table *new, **prevp; unsigned int n, npath; |
ae7edecc9 [PATCH] sysctl: k... |
1887 |
struct ctl_table_set *set; |
29e796fd4 sysctl: Add regis... |
1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 |
/* Count the path components */ for (npath = 0; path[npath].ctl_name || path[npath].procname; ++npath) ; /* * For each path component, allocate a 2-element ctl_table array. * The first array element will be filled with the sysctl entry * for this, the second will be the sentinel (ctl_name == 0). * * We allocate everything in one go so that we don't have to * worry about freeing additional memory in unregister_sysctl_table. */ header = kzalloc(sizeof(struct ctl_table_header) + (2 * npath * sizeof(struct ctl_table)), GFP_KERNEL); if (!header) |
1da177e4c Linux-2.6.12-rc2 |
1904 |
return NULL; |
29e796fd4 sysctl: Add regis... |
1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 |
new = (struct ctl_table *) (header + 1); /* Now connect the dots */ prevp = &header->ctl_table; for (n = 0; n < npath; ++n, ++path) { /* Copy the procname */ new->procname = path->procname; new->ctl_name = path->ctl_name; new->mode = 0555; *prevp = new; prevp = &new->child; new += 2; } *prevp = table; |
23eb06de7 sysctl: Remember ... |
1922 |
header->ctl_table_arg = table; |
29e796fd4 sysctl: Add regis... |
1923 1924 1925 1926 |
INIT_LIST_HEAD(&header->ctl_entry); header->used = 0; header->unregistering = NULL; |
e51b6ba07 sysctl: Infrastru... |
1927 |
header->root = root; |
29e796fd4 sysctl: Add regis... |
1928 |
sysctl_set_parent(NULL, header->ctl_table); |
f7e6ced40 [PATCH] allow del... |
1929 |
header->count = 1; |
88f458e4b sysctl: allow emb... |
1930 |
#ifdef CONFIG_SYSCTL_SYSCALL_CHECK |
e51b6ba07 sysctl: Infrastru... |
1931 |
if (sysctl_check_table(namespaces, header->ctl_table)) { |
29e796fd4 sysctl: Add regis... |
1932 |
kfree(header); |
fc6cd25b7 sysctl: Error on ... |
1933 1934 |
return NULL; } |
88f458e4b sysctl: allow emb... |
1935 |
#endif |
330d57fb9 [PATCH] Fix sysct... |
1936 |
spin_lock(&sysctl_lock); |
734550921 [PATCH] beginning... |
1937 |
header->set = lookup_header_set(root, namespaces); |
ae7edecc9 [PATCH] sysctl: k... |
1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 |
header->attached_by = header->ctl_table; header->attached_to = root_table; header->parent = &root_table_header; for (set = header->set; set; set = set->parent) { struct ctl_table_header *p; list_for_each_entry(p, &set->list, ctl_entry) { if (p->unregistering) continue; try_attach(p, header); } } header->parent->count++; |
734550921 [PATCH] beginning... |
1950 |
list_add_tail(&header->ctl_entry, &header->set->list); |
330d57fb9 [PATCH] Fix sysct... |
1951 |
spin_unlock(&sysctl_lock); |
29e796fd4 sysctl: Add regis... |
1952 1953 1954 1955 1956 |
return header; } /** |
e51b6ba07 sysctl: Infrastru... |
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 |
* register_sysctl_table_path - register a sysctl table hierarchy * @path: The path to the directory the sysctl table is in. * @table: the top-level table structure * * Register a sysctl table hierarchy. @table should be a filled in ctl_table * array. A completely 0 filled entry terminates the table. * * See __register_sysctl_paths for more details. */ struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path, struct ctl_table *table) { return __register_sysctl_paths(&sysctl_table_root, current->nsproxy, path, table); } /** |
29e796fd4 sysctl: Add regis... |
1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 |
* register_sysctl_table - register a sysctl table hierarchy * @table: the top-level table structure * * Register a sysctl table hierarchy. @table should be a filled in ctl_table * array. A completely 0 filled entry terminates the table. * * See register_sysctl_paths for more details. */ struct ctl_table_header *register_sysctl_table(struct ctl_table *table) { static const struct ctl_path null_path[] = { {} }; return register_sysctl_paths(null_path, table); |
1da177e4c Linux-2.6.12-rc2 |
1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 |
} /** * unregister_sysctl_table - unregister a sysctl table hierarchy * @header: the header returned from register_sysctl_table * * Unregisters the sysctl table and all children. proc entries may not * actually be removed until they are no longer used by anyone. */ void unregister_sysctl_table(struct ctl_table_header * header) { |
330d57fb9 [PATCH] Fix sysct... |
1998 |
might_sleep(); |
f1dad166e Avoid potential N... |
1999 2000 2001 |
if (header == NULL) return; |
330d57fb9 [PATCH] Fix sysct... |
2002 2003 |
spin_lock(&sysctl_lock); start_unregistering(header); |
ae7edecc9 [PATCH] sysctl: k... |
2004 2005 2006 2007 |
if (!--header->parent->count) { WARN_ON(1); kfree(header->parent); } |
f7e6ced40 [PATCH] allow del... |
2008 2009 |
if (!--header->count) kfree(header); |
330d57fb9 [PATCH] Fix sysct... |
2010 |
spin_unlock(&sysctl_lock); |
1da177e4c Linux-2.6.12-rc2 |
2011 |
} |
9043476f7 [PATCH] sanitize ... |
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 |
int sysctl_is_seen(struct ctl_table_header *p) { struct ctl_table_set *set = p->set; int res; spin_lock(&sysctl_lock); if (p->unregistering) res = 0; else if (!set->is_seen) res = 1; else res = set->is_seen(set); spin_unlock(&sysctl_lock); return res; } |
734550921 [PATCH] beginning... |
2026 2027 2028 2029 2030 2031 2032 2033 |
void setup_sysctl_set(struct ctl_table_set *p, struct ctl_table_set *parent, int (*is_seen)(struct ctl_table_set *)) { INIT_LIST_HEAD(&p->list); p->parent = parent ? parent : &sysctl_table_root.default_set; p->is_seen = is_seen; } |
b89a81712 [PATCH] sysctl: A... |
2034 |
#else /* !CONFIG_SYSCTL */ |
d8217f076 sysctl core: Stop... |
2035 |
struct ctl_table_header *register_sysctl_table(struct ctl_table * table) |
b89a81712 [PATCH] sysctl: A... |
2036 2037 2038 |
{ return NULL; } |
29e796fd4 sysctl: Add regis... |
2039 2040 2041 2042 2043 |
struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path, struct ctl_table *table) { return NULL; } |
b89a81712 [PATCH] sysctl: A... |
2044 2045 2046 |
void unregister_sysctl_table(struct ctl_table_header * table) { } |
734550921 [PATCH] beginning... |
2047 2048 2049 2050 2051 |
void setup_sysctl_set(struct ctl_table_set *p, struct ctl_table_set *parent, int (*is_seen)(struct ctl_table_set *)) { } |
f7e6ced40 [PATCH] allow del... |
2052 2053 2054 |
void sysctl_head_put(struct ctl_table_header *head) { } |
b89a81712 [PATCH] sysctl: A... |
2055 |
#endif /* CONFIG_SYSCTL */ |
1da177e4c Linux-2.6.12-rc2 |
2056 2057 2058 |
/* * /proc/sys support */ |
b89a81712 [PATCH] sysctl: A... |
2059 |
#ifdef CONFIG_PROC_SYSCTL |
1da177e4c Linux-2.6.12-rc2 |
2060 |
|
b1ba4ddde [PATCH] make kern... |
2061 2062 2063 |
static int _proc_do_string(void* data, int maxlen, int write, struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
2064 2065 2066 2067 |
{ size_t len; char __user *p; char c; |
8d0608771 [PATCH] _proc_do_... |
2068 2069 |
if (!data || !maxlen || !*lenp) { |
1da177e4c Linux-2.6.12-rc2 |
2070 2071 2072 |
*lenp = 0; return 0; } |
8d0608771 [PATCH] _proc_do_... |
2073 |
|
1da177e4c Linux-2.6.12-rc2 |
2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 |
if (write) { len = 0; p = buffer; while (len < *lenp) { if (get_user(c, p++)) return -EFAULT; if (c == 0 || c == ' ') break; len++; } |
f5dd3d6fa [PATCH] proc: sys... |
2085 2086 2087 |
if (len >= maxlen) len = maxlen-1; if(copy_from_user(data, buffer, len)) |
1da177e4c Linux-2.6.12-rc2 |
2088 |
return -EFAULT; |
f5dd3d6fa [PATCH] proc: sys... |
2089 |
((char *) data)[len] = 0; |
1da177e4c Linux-2.6.12-rc2 |
2090 2091 |
*ppos += *lenp; } else { |
f5dd3d6fa [PATCH] proc: sys... |
2092 2093 2094 |
len = strlen(data); if (len > maxlen) len = maxlen; |
8d0608771 [PATCH] _proc_do_... |
2095 2096 2097 2098 2099 2100 2101 2102 |
if (*ppos > len) { *lenp = 0; return 0; } data += *ppos; len -= *ppos; |
1da177e4c Linux-2.6.12-rc2 |
2103 2104 2105 |
if (len > *lenp) len = *lenp; if (len) |
f5dd3d6fa [PATCH] proc: sys... |
2106 |
if(copy_to_user(buffer, data, len)) |
1da177e4c Linux-2.6.12-rc2 |
2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 |
return -EFAULT; if (len < *lenp) { if(put_user(' ', ((char __user *) buffer) + len)) return -EFAULT; len++; } *lenp = len; *ppos += len; } return 0; } |
f5dd3d6fa [PATCH] proc: sys... |
2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 |
/** * proc_dostring - read a string sysctl * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes a string from/to the user buffer. If the kernel * buffer provided is not large enough to hold the string, the * string is truncated. The copied string is %NULL-terminated. * If the string is being read by the user process, it is copied * and a newline ' ' is added. It is truncated if the buffer is * not large enough. * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2138 |
int proc_dostring(struct ctl_table *table, int write, struct file *filp, |
f5dd3d6fa [PATCH] proc: sys... |
2139 2140 2141 2142 2143 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return _proc_do_string(table->data, table->maxlen, write, filp, buffer, lenp, ppos); } |
1da177e4c Linux-2.6.12-rc2 |
2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 |
static int do_proc_dointvec_conv(int *negp, unsigned long *lvalp, int *valp, int write, void *data) { if (write) { *valp = *negp ? -*lvalp : *lvalp; } else { int val = *valp; if (val < 0) { *negp = -1; *lvalp = (unsigned long)-val; } else { *negp = 0; *lvalp = (unsigned long)val; } } return 0; } |
d8217f076 sysctl core: Stop... |
2163 |
static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, |
fcfbd547b [PATCH] IPC names... |
2164 2165 |
int write, struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos, |
1da177e4c Linux-2.6.12-rc2 |
2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 |
int (*conv)(int *negp, unsigned long *lvalp, int *valp, int write, void *data), void *data) { #define TMPBUFLEN 21 int *i, vleft, first=1, neg, val; unsigned long lval; size_t left, len; char buf[TMPBUFLEN], *p; char __user *s = buffer; |
fcfbd547b [PATCH] IPC names... |
2178 |
if (!tbl_data || !table->maxlen || !*lenp || |
1da177e4c Linux-2.6.12-rc2 |
2179 2180 2181 2182 2183 |
(*ppos && !write)) { *lenp = 0; return 0; } |
fcfbd547b [PATCH] IPC names... |
2184 |
i = (int *) tbl_data; |
1da177e4c Linux-2.6.12-rc2 |
2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 |
vleft = table->maxlen / sizeof(*i); left = *lenp; if (!conv) conv = do_proc_dointvec_conv; for (; left && vleft--; i++, first=0) { if (write) { while (left) { char c; if (get_user(c, s)) return -EFAULT; if (!isspace(c)) break; left--; s++; } if (!left) break; neg = 0; len = left; if (len > sizeof(buf) - 1) len = sizeof(buf) - 1; if (copy_from_user(buf, s, len)) return -EFAULT; buf[len] = 0; p = buf; if (*p == '-' && left > 1) { neg = 1; |
bd9b0bac6 [PATCH] sysctl: s... |
2214 |
p++; |
1da177e4c Linux-2.6.12-rc2 |
2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 |
} if (*p < '0' || *p > '9') break; lval = simple_strtoul(p, &p, 0); len = p-buf; if ((len < left) && *p && !isspace(*p)) break; if (neg) val = -val; s += len; left -= len; if (conv(&neg, &lval, i, 1, data)) break; } else { p = buf; if (!first) *p++ = '\t'; if (conv(&neg, &lval, i, 0, data)) break; sprintf(p, "%s%lu", neg ? "-" : "", lval); len = strlen(buf); if (len > left) len = left; if(copy_to_user(s, buf, len)) return -EFAULT; left -= len; s += len; } } if (!write && !first && left) { if(put_user(' ', s)) return -EFAULT; left--, s++; } if (write) { while (left) { char c; if (get_user(c, s++)) return -EFAULT; if (!isspace(c)) break; left--; } } if (write && first) return -EINVAL; *lenp -= left; *ppos += *lenp; return 0; #undef TMPBUFLEN } |
d8217f076 sysctl core: Stop... |
2273 |
static int do_proc_dointvec(struct ctl_table *table, int write, struct file *filp, |
fcfbd547b [PATCH] IPC names... |
2274 2275 2276 2277 2278 2279 2280 2281 |
void __user *buffer, size_t *lenp, loff_t *ppos, int (*conv)(int *negp, unsigned long *lvalp, int *valp, int write, void *data), void *data) { return __do_proc_dointvec(table->data, table, write, filp, buffer, lenp, ppos, conv, data); } |
1da177e4c Linux-2.6.12-rc2 |
2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 |
/** * proc_dointvec - read a vector of integers * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2296 |
int proc_dointvec(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2297 2298 2299 2300 2301 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table,write,filp,buffer,lenp,ppos, NULL,NULL); } |
34f5a3989 [PATCH] Add TAINT... |
2302 |
/* |
25ddbb18a Make the taint fl... |
2303 2304 |
* Taint values can only be increased * This means we can safely use a temporary. |
34f5a3989 [PATCH] Add TAINT... |
2305 |
*/ |
25ddbb18a Make the taint fl... |
2306 |
static int proc_taint(struct ctl_table *table, int write, struct file *filp, |
34f5a3989 [PATCH] Add TAINT... |
2307 2308 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
25ddbb18a Make the taint fl... |
2309 2310 2311 |
struct ctl_table t; unsigned long tmptaint = get_taint(); int err; |
34f5a3989 [PATCH] Add TAINT... |
2312 |
|
91fcd412e Allow reading tai... |
2313 |
if (write && !capable(CAP_SYS_ADMIN)) |
34f5a3989 [PATCH] Add TAINT... |
2314 |
return -EPERM; |
25ddbb18a Make the taint fl... |
2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 |
t = *table; t.data = &tmptaint; err = proc_doulongvec_minmax(&t, write, filp, buffer, lenp, ppos); if (err < 0) return err; if (write) { /* * Poor man's atomic or. Not worth adding a primitive * to everyone's atomic.h for this */ int i; for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) { if ((tmptaint >> i) & 1) add_taint(i); } } return err; |
34f5a3989 [PATCH] Add TAINT... |
2334 |
} |
1da177e4c Linux-2.6.12-rc2 |
2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 |
struct do_proc_dointvec_minmax_conv_param { int *min; int *max; }; static int do_proc_dointvec_minmax_conv(int *negp, unsigned long *lvalp, int *valp, int write, void *data) { struct do_proc_dointvec_minmax_conv_param *param = data; if (write) { int val = *negp ? -*lvalp : *lvalp; if ((param->min && *param->min > val) || (param->max && *param->max < val)) return -EINVAL; *valp = val; } else { int val = *valp; if (val < 0) { *negp = -1; *lvalp = (unsigned long)-val; } else { *negp = 0; *lvalp = (unsigned long)val; } } return 0; } /** * proc_dointvec_minmax - read a vector of integers with min/max values * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * * This routine will ensure the values are within the range specified by * table->extra1 (min) and table->extra2 (max). * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2381 |
int proc_dointvec_minmax(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2382 2383 2384 2385 2386 2387 2388 2389 2390 |
void __user *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_dointvec_minmax_conv_param param = { .min = (int *) table->extra1, .max = (int *) table->extra2, }; return do_proc_dointvec(table, write, filp, buffer, lenp, ppos, do_proc_dointvec_minmax_conv, ¶m); } |
d8217f076 sysctl core: Stop... |
2391 |
static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write, |
1da177e4c Linux-2.6.12-rc2 |
2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 |
struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul, unsigned long convdiv) { #define TMPBUFLEN 21 unsigned long *i, *min, *max, val; int vleft, first=1, neg; size_t len, left; char buf[TMPBUFLEN], *p; char __user *s = buffer; |
fcfbd547b [PATCH] IPC names... |
2405 |
if (!data || !table->maxlen || !*lenp || |
1da177e4c Linux-2.6.12-rc2 |
2406 2407 2408 2409 2410 |
(*ppos && !write)) { *lenp = 0; return 0; } |
fcfbd547b [PATCH] IPC names... |
2411 |
i = (unsigned long *) data; |
1da177e4c Linux-2.6.12-rc2 |
2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 |
min = (unsigned long *) table->extra1; max = (unsigned long *) table->extra2; vleft = table->maxlen / sizeof(unsigned long); left = *lenp; for (; left && vleft--; i++, min++, max++, first=0) { if (write) { while (left) { char c; if (get_user(c, s)) return -EFAULT; if (!isspace(c)) break; left--; s++; } if (!left) break; neg = 0; len = left; if (len > TMPBUFLEN-1) len = TMPBUFLEN-1; if (copy_from_user(buf, s, len)) return -EFAULT; buf[len] = 0; p = buf; if (*p == '-' && left > 1) { neg = 1; |
bd9b0bac6 [PATCH] sysctl: s... |
2440 |
p++; |
1da177e4c Linux-2.6.12-rc2 |
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 |
} if (*p < '0' || *p > '9') break; val = simple_strtoul(p, &p, 0) * convmul / convdiv ; len = p-buf; if ((len < left) && *p && !isspace(*p)) break; if (neg) val = -val; s += len; left -= len; if(neg) continue; if ((min && val < *min) || (max && val > *max)) continue; *i = val; } else { p = buf; if (!first) *p++ = '\t'; sprintf(p, "%lu", convdiv * (*i) / convmul); len = strlen(buf); if (len > left) len = left; if(copy_to_user(s, buf, len)) return -EFAULT; left -= len; s += len; } } if (!write && !first && left) { if(put_user(' ', s)) return -EFAULT; left--, s++; } if (write) { while (left) { char c; if (get_user(c, s++)) return -EFAULT; if (!isspace(c)) break; left--; } } if (write && first) return -EINVAL; *lenp -= left; *ppos += *lenp; return 0; #undef TMPBUFLEN } |
d8217f076 sysctl core: Stop... |
2496 |
static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, |
fcfbd547b [PATCH] IPC names... |
2497 2498 2499 2500 2501 2502 2503 2504 2505 |
struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul, unsigned long convdiv) { return __do_proc_doulongvec_minmax(table->data, table, write, filp, buffer, lenp, ppos, convmul, convdiv); } |
1da177e4c Linux-2.6.12-rc2 |
2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 |
/** * proc_doulongvec_minmax - read a vector of long integers with min/max values * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long * values from/to the user buffer, treated as an ASCII string. * * This routine will ensure the values are within the range specified by * table->extra1 (min) and table->extra2 (max). * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2523 |
int proc_doulongvec_minmax(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return do_proc_doulongvec_minmax(table, write, filp, buffer, lenp, ppos, 1l, 1l); } /** * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long * values from/to the user buffer, treated as an ASCII string. The values * are treated as milliseconds, and converted to jiffies when they are stored. * * This routine will ensure the values are within the range specified by * table->extra1 (min) and table->extra2 (max). * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2547 |
int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4c Linux-2.6.12-rc2 |
2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 |
struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos) { return do_proc_doulongvec_minmax(table, write, filp, buffer, lenp, ppos, HZ, 1000l); } static int do_proc_dointvec_jiffies_conv(int *negp, unsigned long *lvalp, int *valp, int write, void *data) { if (write) { |
cba9f33d1 [PATCH] Range che... |
2562 2563 |
if (*lvalp > LONG_MAX / HZ) return 1; |
1da177e4c Linux-2.6.12-rc2 |
2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 |
*valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ); } else { int val = *valp; unsigned long lval; if (val < 0) { *negp = -1; lval = (unsigned long)-val; } else { *negp = 0; lval = (unsigned long)val; } *lvalp = lval / HZ; } return 0; } static int do_proc_dointvec_userhz_jiffies_conv(int *negp, unsigned long *lvalp, int *valp, int write, void *data) { if (write) { |
cba9f33d1 [PATCH] Range che... |
2585 2586 |
if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ) return 1; |
1da177e4c Linux-2.6.12-rc2 |
2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 |
*valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp); } else { int val = *valp; unsigned long lval; if (val < 0) { *negp = -1; lval = (unsigned long)-val; } else { *negp = 0; lval = (unsigned long)val; } *lvalp = jiffies_to_clock_t(lval); } return 0; } static int do_proc_dointvec_ms_jiffies_conv(int *negp, unsigned long *lvalp, int *valp, int write, void *data) { if (write) { *valp = msecs_to_jiffies(*negp ? -*lvalp : *lvalp); } else { int val = *valp; unsigned long lval; if (val < 0) { *negp = -1; lval = (unsigned long)-val; } else { *negp = 0; lval = (unsigned long)val; } *lvalp = jiffies_to_msecs(lval); } return 0; } /** * proc_dointvec_jiffies - read a vector of integers as seconds * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * The values read are assumed to be in seconds, and are converted into * jiffies. * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2640 |
int proc_dointvec_jiffies(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table,write,filp,buffer,lenp,ppos, do_proc_dointvec_jiffies_conv,NULL); } /** * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer |
1e5d53314 [PATCH] more kern... |
2654 |
* @ppos: pointer to the file position |
1da177e4c Linux-2.6.12-rc2 |
2655 2656 2657 2658 2659 2660 2661 2662 |
* * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * The values read are assumed to be in 1/USER_HZ seconds, and * are converted into jiffies. * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2663 |
int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table,write,filp,buffer,lenp,ppos, do_proc_dointvec_userhz_jiffies_conv,NULL); } /** * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @filp: the file structure * @buffer: the user buffer * @lenp: the size of the user buffer |
67be2dd1b [PATCH] DocBook: ... |
2677 2678 |
* @ppos: file position * @ppos: the current position in the file |
1da177e4c Linux-2.6.12-rc2 |
2679 2680 2681 2682 2683 2684 2685 2686 |
* * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * The values read are assumed to be in 1/1000 seconds, and * are converted into jiffies. * * Returns 0 on success. */ |
d8217f076 sysctl core: Stop... |
2687 |
int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2688 2689 2690 2691 2692 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return do_proc_dointvec(table, write, filp, buffer, lenp, ppos, do_proc_dointvec_ms_jiffies_conv, NULL); } |
d8217f076 sysctl core: Stop... |
2693 |
static int proc_do_cad_pid(struct ctl_table *table, int write, struct file *filp, |
9ec52099e [PATCH] replace c... |
2694 2695 2696 2697 2698 |
void __user *buffer, size_t *lenp, loff_t *ppos) { struct pid *new_pid; pid_t tmp; int r; |
6c5f3e7b4 Pidns: make full ... |
2699 |
tmp = pid_vnr(cad_pid); |
9ec52099e [PATCH] replace c... |
2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 |
r = __do_proc_dointvec(&tmp, table, write, filp, buffer, lenp, ppos, NULL, NULL); if (r || !write) return r; new_pid = find_get_pid(tmp); if (!new_pid) return -ESRCH; put_pid(xchg(&cad_pid, new_pid)); return 0; } |
1da177e4c Linux-2.6.12-rc2 |
2713 |
#else /* CONFIG_PROC_FS */ |
d8217f076 sysctl core: Stop... |
2714 |
int proc_dostring(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2715 2716 2717 2718 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
d8217f076 sysctl core: Stop... |
2719 |
int proc_dointvec(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2720 |
void __user *buffer, size_t *lenp, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
2721 2722 2723 |
{ return -ENOSYS; } |
d8217f076 sysctl core: Stop... |
2724 |
int proc_dointvec_minmax(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2725 2726 2727 2728 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
d8217f076 sysctl core: Stop... |
2729 |
int proc_dointvec_jiffies(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2730 2731 2732 2733 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
d8217f076 sysctl core: Stop... |
2734 |
int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2735 2736 2737 2738 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
d8217f076 sysctl core: Stop... |
2739 |
int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2740 2741 2742 2743 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
d8217f076 sysctl core: Stop... |
2744 |
int proc_doulongvec_minmax(struct ctl_table *table, int write, struct file *filp, |
1da177e4c Linux-2.6.12-rc2 |
2745 2746 2747 2748 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
d8217f076 sysctl core: Stop... |
2749 |
int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4c Linux-2.6.12-rc2 |
2750 2751 2752 2753 2754 2755 2756 2757 2758 |
struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } #endif /* CONFIG_PROC_FS */ |
b89a81712 [PATCH] sysctl: A... |
2759 |
#ifdef CONFIG_SYSCTL_SYSCALL |
1da177e4c Linux-2.6.12-rc2 |
2760 2761 2762 |
/* * General sysctl support routines */ |
49a0c4583 sysctl: Factor ou... |
2763 |
/* The generic sysctl data routine (used if no strategy routine supplied) */ |
f221e726b sysctl: simplify ... |
2764 |
int sysctl_data(struct ctl_table *table, |
49a0c4583 sysctl: Factor ou... |
2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 |
void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen) { size_t len; /* Get out of I don't have a variable */ if (!table->data || !table->maxlen) return -ENOTDIR; if (oldval && oldlenp) { if (get_user(len, oldlenp)) return -EFAULT; if (len) { if (len > table->maxlen) len = table->maxlen; if (copy_to_user(oldval, table->data, len)) return -EFAULT; if (put_user(len, oldlenp)) return -EFAULT; } } if (newval && newlen) { if (newlen > table->maxlen) newlen = table->maxlen; if (copy_from_user(table->data, newval, newlen)) return -EFAULT; } return 1; } |
1da177e4c Linux-2.6.12-rc2 |
2796 |
/* The generic string strategy routine: */ |
f221e726b sysctl: simplify ... |
2797 |
int sysctl_string(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2798 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2799 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2800 |
{ |
1da177e4c Linux-2.6.12-rc2 |
2801 2802 2803 2804 |
if (!table->data || !table->maxlen) return -ENOTDIR; if (oldval && oldlenp) { |
de9e007d9 sysctl: make sure... |
2805 2806 |
size_t bufsize; if (get_user(bufsize, oldlenp)) |
1da177e4c Linux-2.6.12-rc2 |
2807 |
return -EFAULT; |
de9e007d9 sysctl: make sure... |
2808 2809 2810 2811 2812 |
if (bufsize) { size_t len = strlen(table->data), copied; /* This shouldn't trigger for a well-formed sysctl */ if (len > table->maxlen) |
1da177e4c Linux-2.6.12-rc2 |
2813 |
len = table->maxlen; |
de9e007d9 sysctl: make sure... |
2814 2815 2816 2817 2818 2819 |
/* Copy up to a max of bufsize-1 bytes of the string */ copied = (len >= bufsize) ? bufsize - 1 : len; if (copy_to_user(oldval, table->data, copied) || put_user(0, (char __user *)(oldval + copied))) |
1da177e4c Linux-2.6.12-rc2 |
2820 |
return -EFAULT; |
de9e007d9 sysctl: make sure... |
2821 |
if (put_user(len, oldlenp)) |
1da177e4c Linux-2.6.12-rc2 |
2822 2823 2824 2825 |
return -EFAULT; } } if (newval && newlen) { |
de9e007d9 sysctl: make sure... |
2826 |
size_t len = newlen; |
1da177e4c Linux-2.6.12-rc2 |
2827 2828 2829 2830 2831 2832 2833 2834 |
if (len > table->maxlen) len = table->maxlen; if(copy_from_user(table->data, newval, len)) return -EFAULT; if (len == table->maxlen) len--; ((char *) table->data)[len] = 0; } |
82c9df820 [PATCH] Fix false... |
2835 |
return 1; |
1da177e4c Linux-2.6.12-rc2 |
2836 2837 2838 2839 2840 2841 2842 |
} /* * This function makes sure that all of the integers in the vector * are between the minimum and maximum values given in the arrays * table->extra1 and table->extra2, respectively. */ |
f221e726b sysctl: simplify ... |
2843 |
int sysctl_intvec(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2844 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2845 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 |
{ if (newval && newlen) { int __user *vec = (int __user *) newval; int *min = (int *) table->extra1; int *max = (int *) table->extra2; size_t length; int i; if (newlen % sizeof(int) != 0) return -EINVAL; if (!table->extra1 && !table->extra2) return 0; if (newlen > table->maxlen) newlen = table->maxlen; length = newlen / sizeof(int); for (i = 0; i < length; i++) { int value; if (get_user(value, vec + i)) return -EFAULT; if (min && value < min[i]) return -EINVAL; if (max && value > max[i]) return -EINVAL; } } return 0; } /* Strategy function to convert jiffies to seconds */ |
f221e726b sysctl: simplify ... |
2879 |
int sysctl_jiffies(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2880 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2881 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2882 |
{ |
3ee75ac3c [PATCH] sysctl_{,... |
2883 |
if (oldval && oldlenp) { |
1da177e4c Linux-2.6.12-rc2 |
2884 |
size_t olen; |
3ee75ac3c [PATCH] sysctl_{,... |
2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 |
if (get_user(olen, oldlenp)) return -EFAULT; if (olen) { int val; if (olen < sizeof(int)) return -EINVAL; val = *(int *)(table->data) / HZ; if (put_user(val, (int __user *)oldval)) return -EFAULT; if (put_user(sizeof(int), oldlenp)) |
1da177e4c Linux-2.6.12-rc2 |
2898 |
return -EFAULT; |
1da177e4c Linux-2.6.12-rc2 |
2899 |
} |
1da177e4c Linux-2.6.12-rc2 |
2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 |
} if (newval && newlen) { int new; if (newlen != sizeof(int)) return -EINVAL; if (get_user(new, (int __user *)newval)) return -EFAULT; *(int *)(table->data) = new*HZ; } return 1; } /* Strategy function to convert jiffies to seconds */ |
f221e726b sysctl: simplify ... |
2913 |
int sysctl_ms_jiffies(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2914 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2915 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2916 |
{ |
3ee75ac3c [PATCH] sysctl_{,... |
2917 |
if (oldval && oldlenp) { |
1da177e4c Linux-2.6.12-rc2 |
2918 |
size_t olen; |
3ee75ac3c [PATCH] sysctl_{,... |
2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 |
if (get_user(olen, oldlenp)) return -EFAULT; if (olen) { int val; if (olen < sizeof(int)) return -EINVAL; val = jiffies_to_msecs(*(int *)(table->data)); if (put_user(val, (int __user *)oldval)) return -EFAULT; if (put_user(sizeof(int), oldlenp)) |
1da177e4c Linux-2.6.12-rc2 |
2932 |
return -EFAULT; |
1da177e4c Linux-2.6.12-rc2 |
2933 |
} |
1da177e4c Linux-2.6.12-rc2 |
2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 |
} if (newval && newlen) { int new; if (newlen != sizeof(int)) return -EINVAL; if (get_user(new, (int __user *)newval)) return -EFAULT; *(int *)(table->data) = msecs_to_jiffies(new); } return 1; } |
c4b8b769f [PATCH] sysctl: i... |
2945 |
|
c4b8b769f [PATCH] sysctl: i... |
2946 |
|
b89a81712 [PATCH] sysctl: A... |
2947 |
#else /* CONFIG_SYSCTL_SYSCALL */ |
1da177e4c Linux-2.6.12-rc2 |
2948 |
|
1e7bfb213 [CVE-2009-0029] S... |
2949 |
SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args) |
1da177e4c Linux-2.6.12-rc2 |
2950 |
{ |
0e009be8a [PATCH] Improve t... |
2951 |
struct __sysctl_args tmp; |
7058cb02d sysctl: deprecate... |
2952 |
int error; |
0e009be8a [PATCH] Improve t... |
2953 |
|
0e009be8a [PATCH] Improve t... |
2954 2955 |
if (copy_from_user(&tmp, args, sizeof(tmp))) return -EFAULT; |
0e009be8a [PATCH] Improve t... |
2956 |
|
7058cb02d sysctl: deprecate... |
2957 |
error = deprecated_sysctl_warning(&tmp); |
b89a81712 [PATCH] sysctl: A... |
2958 |
|
7058cb02d sysctl: deprecate... |
2959 2960 2961 2962 2963 |
/* If no error reading the parameters then just -ENOSYS ... */ if (!error) error = -ENOSYS; return error; |
1da177e4c Linux-2.6.12-rc2 |
2964 |
} |
f221e726b sysctl: simplify ... |
2965 |
int sysctl_data(struct ctl_table *table, |
49a0c4583 sysctl: Factor ou... |
2966 2967 2968 2969 2970 |
void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen) { return -ENOSYS; } |
f221e726b sysctl: simplify ... |
2971 |
int sysctl_string(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2972 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2973 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2974 2975 2976 |
{ return -ENOSYS; } |
f221e726b sysctl: simplify ... |
2977 |
int sysctl_intvec(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2978 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2979 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2980 2981 2982 |
{ return -ENOSYS; } |
f221e726b sysctl: simplify ... |
2983 |
int sysctl_jiffies(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2984 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2985 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2986 2987 2988 |
{ return -ENOSYS; } |
f221e726b sysctl: simplify ... |
2989 |
int sysctl_ms_jiffies(struct ctl_table *table, |
1da177e4c Linux-2.6.12-rc2 |
2990 |
void __user *oldval, size_t __user *oldlenp, |
1f29bcd73 [PATCH] sysctl: r... |
2991 |
void __user *newval, size_t newlen) |
1da177e4c Linux-2.6.12-rc2 |
2992 2993 2994 |
{ return -ENOSYS; } |
b89a81712 [PATCH] sysctl: A... |
2995 |
#endif /* CONFIG_SYSCTL_SYSCALL */ |
1da177e4c Linux-2.6.12-rc2 |
2996 |
|
7058cb02d sysctl: deprecate... |
2997 2998 2999 3000 3001 |
static int deprecated_sysctl_warning(struct __sysctl_args *args) { static int msg_count; int name[CTL_MAXNAME]; int i; |
6fc48af82 sysctl: check len... |
3002 3003 3004 |
/* Check args->nlen. */ if (args->nlen < 0 || args->nlen > CTL_MAXNAME) return -ENOTDIR; |
7058cb02d sysctl: deprecate... |
3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 |
/* Read in the sysctl name for better debug message logging */ for (i = 0; i < args->nlen; i++) if (get_user(name[i], args->name + i)) return -EFAULT; /* Ignore accesses to kernel.version */ if ((args->nlen == 2) && (name[0] == CTL_KERN) && (name[1] == KERN_VERSION)) return 0; if (msg_count < 5) { msg_count++; printk(KERN_INFO "warning: process `%s' used the deprecated sysctl " "system call with ", current->comm); for (i = 0; i < args->nlen; i++) printk("%d.", name[i]); printk(" "); } return 0; } |
1da177e4c Linux-2.6.12-rc2 |
3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 |
/* * No sense putting this after each symbol definition, twice, * exception granted :-) */ EXPORT_SYMBOL(proc_dointvec); EXPORT_SYMBOL(proc_dointvec_jiffies); EXPORT_SYMBOL(proc_dointvec_minmax); EXPORT_SYMBOL(proc_dointvec_userhz_jiffies); EXPORT_SYMBOL(proc_dointvec_ms_jiffies); EXPORT_SYMBOL(proc_dostring); EXPORT_SYMBOL(proc_doulongvec_minmax); EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax); EXPORT_SYMBOL(register_sysctl_table); |
29e796fd4 sysctl: Add regis... |
3039 |
EXPORT_SYMBOL(register_sysctl_paths); |
1da177e4c Linux-2.6.12-rc2 |
3040 3041 3042 3043 |
EXPORT_SYMBOL(sysctl_intvec); EXPORT_SYMBOL(sysctl_jiffies); EXPORT_SYMBOL(sysctl_ms_jiffies); EXPORT_SYMBOL(sysctl_string); |
49a0c4583 sysctl: Factor ou... |
3044 |
EXPORT_SYMBOL(sysctl_data); |
1da177e4c Linux-2.6.12-rc2 |
3045 |
EXPORT_SYMBOL(unregister_sysctl_table); |