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Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Browse Source 
Pull in Christoph Hellwig's series that changes the sysctl's ->proc_handler
methods to take kernel pointers instead. It gets rid of the set_fs address
space overrides used by BPF. As per discussion, pull in the feature branch
into bpf-next as it relates to BPF sysctl progs.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200427071508.GV23230@ZenIV.linux.org.uk/T/
This commit is contained in:
Daniel Borkmann 2020-04-28 21:20:20 +02:00
commit 0b54142e4b
91 changed files with 1839 additions and 2103 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/kernel/armv8_deprecated.c
View File

@ -203,7 +203,7 @@ static void __init register_insn_emulation(struct insn_emulation_ops *ops)
}
static int emulation_proc_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
int ret = 0;

3
arch/arm64/kernel/fpsimd.c
View File

@ -341,8 +341,7 @@ static unsigned int find_supported_vector_length(unsigned int vl)
#ifdef CONFIG_SYSCTL
static int sve_proc_do_default_vl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
int vl = sve_default_vl;

13
arch/mips/lasat/sysctl.c
View File

@ -95,16 +95,15 @@ int proc_lasat_ip(struct ctl_table *table, int write,
len = 0;
p = buffer;
while (len < *lenp) {
if (get_user(c, p++))
return -EFAULT;
c = *p;
p++;
if (c == 0 || c == '\n')
break;
len++;
}
if (len >= sizeof(ipbuf)-1)
len = sizeof(ipbuf) - 1;
if (copy_from_user(ipbuf, buffer, len))
return -EFAULT;
memcpy(ipbuf, buffer, len);
ipbuf[len] = 0;
*ppos += *lenp;
/* Now see if we can convert it to a valid IP */
@ -122,11 +121,9 @@ int proc_lasat_ip(struct ctl_table *table, int write,
if (len > *lenp)
len = *lenp;
if (len)
if (copy_to_user(buffer, ipbuf, len))
return -EFAULT;
memcpy(buffer, ipbuf, len);
if (len < *lenp) {
if (put_user('\n', ((char *) buffer) + len))
return -EFAULT;
*((char *)buffer + len) = '\n';
len++;
}
*lenp = len;

11
arch/s390/appldata/appldata_base.c
View File

@ -51,10 +51,9 @@ static struct platform_device *appldata_pdev;
*/
static const char appldata_proc_name[APPLDATA_PROC_NAME_LENGTH] = "appldata";
static int appldata_timer_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
static int appldata_interval_handler(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
static struct ctl_table_header *appldata_sysctl_header;
static struct ctl_table appldata_table[] = {
@ -217,7 +216,7 @@ static void __appldata_vtimer_setup(int cmd)
*/
static int
appldata_timer_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int timer_active = appldata_timer_active;
int rc;
@ -250,7 +249,7 @@ appldata_timer_handler(struct ctl_table *ctl, int write,
*/
static int
appldata_interval_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int interval = appldata_interval;
int rc;
@ -280,7 +279,7 @@ appldata_interval_handler(struct ctl_table *ctl, int write,
*/
static int
appldata_generic_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct appldata_ops *ops = NULL, *tmp_ops;
struct list_head *lh;

2
arch/s390/kernel/debug.c
View File

@ -867,7 +867,7 @@ static int debug_active = 1;
* if debug_active is already off
*/
static int s390dbf_procactive(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
if (!write || debug_stoppable || !debug_active)
return proc_dointvec(table, write, buffer, lenp, ppos);

2
arch/s390/kernel/topology.c
View File

@ -594,7 +594,7 @@ static int __init topology_setup(char *str)
early_param("topology", topology_setup);
static int topology_ctl_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int enabled = topology_is_enabled();
int new_mode;

12
arch/s390/mm/cmm.c
View File

@ -245,7 +245,7 @@ static int cmm_skip_blanks(char *cp, char **endp)
}
static int cmm_pages_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
long nr = cmm_get_pages();
struct ctl_table ctl_entry = {
@ -264,7 +264,7 @@ static int cmm_pages_handler(struct ctl_table *ctl, int write,
}
static int cmm_timed_pages_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
long nr = cmm_get_timed_pages();
@ -284,7 +284,7 @@ static int cmm_timed_pages_handler(struct ctl_table *ctl, int write,
}
static int cmm_timeout_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
char buf[64], *p;
long nr, seconds;
@ -297,8 +297,7 @@ static int cmm_timeout_handler(struct ctl_table *ctl, int write,
if (write) {
len = min(*lenp, sizeof(buf));
if (copy_from_user(buf, buffer, len))
return -EFAULT;
memcpy(buf, buffer, len);
buf[len - 1] = '\0';
cmm_skip_blanks(buf, &p);
nr = simple_strtoul(p, &p, 0);
@ -311,8 +310,7 @@ static int cmm_timeout_handler(struct ctl_table *ctl, int write,
cmm_timeout_pages, cmm_timeout_seconds);
if (len > *lenp)
len = *lenp;
if (copy_to_user(buffer, buf, len))
return -EFAULT;
memcpy(buffer, buf, len);
*lenp = len;
*ppos += len;
}

3
arch/x86/kernel/itmt.c
View File

@ -39,8 +39,7 @@ static bool __read_mostly sched_itmt_capable;
unsigned int __read_mostly sysctl_sched_itmt_enabled;
static int sched_itmt_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
unsigned int old_sysctl;
int ret;

2
drivers/cdrom/cdrom.c
View File

@ -3631,7 +3631,7 @@ static void cdrom_update_settings(void)
}
static int cdrom_sysctl_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;

2
drivers/char/random.c
View File

@ -2057,7 +2057,7 @@ static char sysctl_bootid[16];
* sysctl system call, as 16 bytes of binary data.
*/
static int proc_do_uuid(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table fake_table;
unsigned char buf[64], tmp_uuid[16], *uuid;

3
drivers/macintosh/mac_hid.c
View File

@ -183,8 +183,7 @@ static void mac_hid_stop_emulation(void)
}
static int mac_hid_toggle_emumouse(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = table->data;
int old_val = *valp;

39
drivers/parport/procfs.c
View File

@ -34,7 +34,7 @@
#define PARPORT_MAX_SPINTIME_VALUE 1000
static int do_active_device(struct ctl_table *table, int write,
void __user *result, size_t *lenp, loff_t *ppos)
void *result, size_t *lenp, loff_t *ppos)
{
struct parport *port = (struct parport *)table->extra1;
char buffer[256];
@ -65,13 +65,13 @@ static int do_active_device(struct ctl_table *table, int write,
*lenp = len;
*ppos += len;
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
memcpy(result, buffer, len);
return 0;
}
#ifdef CONFIG_PARPORT_1284
static int do_autoprobe(struct ctl_table *table, int write,
void __user *result, size_t *lenp, loff_t *ppos)
void *result, size_t *lenp, loff_t *ppos)
{
struct parport_device_info *info = table->extra2;
const char *str;
@ -108,13 +108,13 @@ static int do_autoprobe(struct ctl_table *table, int write,
*ppos += len;
return copy_to_user (result, buffer, len) ? -EFAULT : 0;
memcpy(result, buffer, len);
return 0;
}
#endif /* IEEE1284.3 support. */
static int do_hardware_base_addr(struct ctl_table *table, int write,
void __user *result,
size_t *lenp, loff_t *ppos)
void *result, size_t *lenp, loff_t *ppos)
{
struct parport *port = (struct parport *)table->extra1;
char buffer[20];
@ -136,13 +136,12 @@ static int do_hardware_base_addr(struct ctl_table *table, int write,
*lenp = len;
*ppos += len;
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
memcpy(result, buffer, len);
return 0;
}
static int do_hardware_irq(struct ctl_table *table, int write,
void __user *result,
size_t *lenp, loff_t *ppos)
void *result, size_t *lenp, loff_t *ppos)
{
struct parport *port = (struct parport *)table->extra1;
char buffer[20];
@ -164,13 +163,12 @@ static int do_hardware_irq(struct ctl_table *table, int write,
*lenp = len;
*ppos += len;
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
memcpy(result, buffer, len);
return 0;
}
static int do_hardware_dma(struct ctl_table *table, int write,
void __user *result,
size_t *lenp, loff_t *ppos)
void *result, size_t *lenp, loff_t *ppos)
{
struct parport *port = (struct parport *)table->extra1;
char buffer[20];
@ -192,13 +190,12 @@ static int do_hardware_dma(struct ctl_table *table, int write,
*lenp = len;
*ppos += len;
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
memcpy(result, buffer, len);
return 0;
}
static int do_hardware_modes(struct ctl_table *table, int write,
void __user *result,
size_t *lenp, loff_t *ppos)
void *result, size_t *lenp, loff_t *ppos)
{
struct parport *port = (struct parport *)table->extra1;
char buffer[40];
@ -231,8 +228,8 @@ static int do_hardware_modes(struct ctl_table *table, int write,
*lenp = len;
*ppos += len;
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
memcpy(result, buffer, len);
return 0;
}
#define PARPORT_PORT_DIR(CHILD) { .procname = NULL, .mode = 0555, .child = CHILD }

2
fs/dcache.c
View File

@ -165,7 +165,7 @@ static long get_nr_dentry_negative(void)
return sum < 0 ? 0 : sum;
}
int proc_nr_dentry(struct ctl_table *table, int write, void __user *buffer,
int proc_nr_dentry(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
dentry_stat.nr_dentry = get_nr_dentry();

2
fs/drop_caches.c
View File

@ -47,7 +47,7 @@ static void drop_pagecache_sb(struct super_block *sb, void *unused)
}
int drop_caches_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
int ret;

4
fs/file_table.c
View File

@ -80,14 +80,14 @@ EXPORT_SYMBOL_GPL(get_max_files);
*/
#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
int proc_nr_files(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
files_stat.nr_files = get_nr_files();
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}
#else
int proc_nr_files(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
return -ENOSYS;
}

3
fs/fscache/main.c
View File

@ -51,8 +51,7 @@ static unsigned fscache_op_max_active = 2;
static struct ctl_table_header *fscache_sysctl_header;
static int fscache_max_active_sysctl(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct workqueue_struct **wqp = table->extra1;
unsigned int *datap = table->data;

2
fs/inode.c
View File

@ -108,7 +108,7 @@ long get_nr_dirty_inodes(void)
*/
#ifdef CONFIG_SYSCTL
int proc_nr_inodes(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
inodes_stat.nr_inodes = get_nr_inodes();
inodes_stat.nr_unused = get_nr_inodes_unused();

51
fs/proc/proc_sysctl.c
View File

@ -539,13 +539,13 @@ out:
return err;
}
static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
static ssize_t proc_sys_call_handler(struct file *filp, void __user *ubuf,
size_t count, loff_t *ppos, int write)
{
struct inode *inode = file_inode(filp);
struct ctl_table_header *head = grab_header(inode);
struct ctl_table *table = PROC_I(inode)->sysctl_entry;
void *new_buf = NULL;
void *kbuf;
ssize_t error;
if (IS_ERR(head))
@ -564,27 +564,38 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
if (!table->proc_handler)
goto out;
error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, &count,
ppos, &new_buf);
if (error)
goto out;
/* careful: calling conventions are nasty here */
if (new_buf) {
mm_segment_t old_fs;
old_fs = get_fs();
set_fs(KERNEL_DS);
error = table->proc_handler(table, write, (void __user *)new_buf,
&count, ppos);
set_fs(old_fs);
kfree(new_buf);
if (write) {
kbuf = memdup_user_nul(ubuf, count);
if (IS_ERR(kbuf)) {
error = PTR_ERR(kbuf);
goto out;
}
} else {
error = table->proc_handler(table, write, buf, &count, ppos);
error = -ENOMEM;
kbuf = kzalloc(count, GFP_KERNEL);
if (!kbuf)
goto out;
}
if (!error)
error = count;
error = BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, &kbuf, &count,
ppos);
if (error)
goto out_free_buf;
/* careful: calling conventions are nasty here */
error = table->proc_handler(table, write, kbuf, &count, ppos);
if (error)
goto out_free_buf;
if (!write) {
error = -EFAULT;
if (copy_to_user(ubuf, kbuf, count))
goto out_free_buf;
}
error = count;
out_free_buf:
kfree(kbuf);
out:
sysctl_head_finish(head);

2
fs/quota/dquot.c
View File

@ -2841,7 +2841,7 @@ const struct quotactl_ops dquot_quotactl_sysfile_ops = {
EXPORT_SYMBOL(dquot_quotactl_sysfile_ops);
static int do_proc_dqstats(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
unsigned int type = (unsigned long *)table->data - dqstats.stat;
s64 value = percpu_counter_sum(&dqstats.counter[type]);

4
fs/xfs/xfs_sysctl.c
View File

@ -13,7 +13,7 @@ STATIC int
xfs_stats_clear_proc_handler(
struct ctl_table *ctl,
int write,
void __user *buffer,
void *buffer,
size_t *lenp,
loff_t *ppos)
{
@ -33,7 +33,7 @@ STATIC int
xfs_panic_mask_proc_handler(
struct ctl_table *ctl,
int write,
void __user *buffer,
void *buffer,
size_t *lenp,
loff_t *ppos)
{

9
include/linux/bpf-cgroup.h
View File

@ -138,8 +138,7 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
struct ctl_table *table, int write,
void __user *buf, size_t *pcount,
loff_t *ppos, void **new_buf,
void **buf, size_t *pcount, loff_t *ppos,
enum bpf_attach_type type);
int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
@ -302,12 +301,12 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
})
#define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos, nbuf) \
#define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos) \
({ \
int __ret = 0; \
if (cgroup_bpf_enabled) \
__ret = __cgroup_bpf_run_filter_sysctl(head, table, write, \
buf, count, pos, nbuf, \
buf, count, pos, \
BPF_CGROUP_SYSCTL); \
__ret; \
})
@ -429,7 +428,7 @@ static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
#define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
#define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
#define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type,major,minor,access) ({ 0; })
#define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos,nbuf) ({ 0; })
#define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; })
#define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
#define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
optlen, max_optlen, retval) ({ retval; })

2
include/linux/compaction.h
View File

@ -86,7 +86,7 @@ static inline unsigned long compact_gap(unsigned int order)
#ifdef CONFIG_COMPACTION
extern int sysctl_compact_memory;
extern int sysctl_compaction_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos);
void *buffer, size_t *length, loff_t *ppos);
extern int sysctl_extfrag_threshold;
extern int sysctl_compact_unevictable_allowed;

4
include/linux/coredump.h
View File

@ -22,4 +22,8 @@ extern void do_coredump(const kernel_siginfo_t *siginfo);
static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
#endif
extern int core_uses_pid;
extern char core_pattern[];
extern unsigned int core_pipe_limit;
#endif /* _LINUX_COREDUMP_H */

2
include/linux/file.h
View File

@ -94,4 +94,6 @@ extern void fd_install(unsigned int fd, struct file *file);
extern void flush_delayed_fput(void);
extern void __fput_sync(struct file *);
extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
#endif /* __LINUX_FILE_H */

6
include/linux/fs.h
View File

@ -3536,11 +3536,11 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
struct ctl_table;
int proc_nr_files(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
int proc_nr_dentry(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
int proc_nr_inodes(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
int __init get_filesystem_list(char *buf);
#define __FMODE_EXEC ((__force int) FMODE_EXEC)

3
include/linux/ftrace.h
View File

@ -1005,8 +1005,7 @@ extern void disable_trace_on_warning(void);
extern int __disable_trace_on_warning;
int tracepoint_printk_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
#else /* CONFIG_TRACING */
static inline void disable_trace_on_warning(void) { }

15
include/linux/hugetlb.h
View File

@ -105,14 +105,13 @@ struct hugepage_subpool *hugepage_new_subpool(struct hstate *h, long max_hpages,
void hugepage_put_subpool(struct hugepage_subpool *spool);
void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
int hugetlb_overcommit_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
int hugetlb_treat_movable_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *);
#ifdef CONFIG_NUMA
int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
#endif
int hugetlb_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *);
int hugetlb_overcommit_handler(struct ctl_table *, int, void *, size_t *,
loff_t *);
int hugetlb_treat_movable_handler(struct ctl_table *, int, void *, size_t *,
loff_t *);
int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int, void *, size_t *,
loff_t *);
int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
long follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,

2
include/linux/kprobes.h
View File

@ -312,7 +312,7 @@ DEFINE_INSN_CACHE_OPS(optinsn);
#ifdef CONFIG_SYSCTL
extern int sysctl_kprobes_optimization;
extern int proc_kprobes_optimization_handler(struct ctl_table *table,
int write, void __user *buffer,
int write, void *buffer,
size_t *length, loff_t *ppos);
#endif
extern void wait_for_kprobe_optimizer(void);

4
include/linux/latencytop.h
View File

@ -38,8 +38,8 @@ account_scheduler_latency(struct task_struct *task, int usecs, int inter)
void clear_tsk_latency_tracing(struct task_struct *p);
extern int sysctl_latencytop(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
int sysctl_latencytop(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
#else

14
include/linux/mm.h
View File

@ -201,10 +201,10 @@ extern int sysctl_overcommit_memory;
extern int sysctl_overcommit_ratio;
extern unsigned long sysctl_overcommit_kbytes;
extern int overcommit_ratio_handler(struct ctl_table *, int, void __user *,
size_t *, loff_t *);
extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *,
size_t *, loff_t *);
int overcommit_ratio_handler(struct ctl_table *, int, void *, size_t *,
loff_t *);
int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *,
loff_t *);
#define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
@ -2957,8 +2957,8 @@ extern bool process_shares_mm(struct task_struct *p, struct mm_struct *mm);
#ifdef CONFIG_SYSCTL
extern int sysctl_drop_caches;
int drop_caches_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int drop_caches_sysctl_handler(struct ctl_table *, int, void *, size_t *,
loff_t *);
#endif
void drop_slab(void);
@ -3140,5 +3140,7 @@ unsigned long wp_shared_mapping_range(struct address_space *mapping,
pgoff_t first_index, pgoff_t nr);
#endif
extern int sysctl_nr_trim_pages;
#endif /* __KERNEL__ */
#endif /* _LINUX_MM_H */

33
include/linux/mmzone.h
View File

@ -909,24 +909,23 @@ static inline int is_highmem(struct zone *zone)
/* These two functions are used to setup the per zone pages min values */
struct ctl_table;
int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int watermark_boost_factor_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int watermark_scale_factor_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES];
int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int numa_zonelist_order_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int min_free_kbytes_sysctl_handler(struct ctl_table *, int, void *, size_t *,
loff_t *);
int watermark_scale_factor_sysctl_handler(struct ctl_table *, int, void *,
size_t *, loff_t *);
extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES];
int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *, int, void *,
size_t *, loff_t *);
int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *, int,
void *, size_t *, loff_t *);
int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *, int,
void *, size_t *, loff_t *);
int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int,
void *, size_t *, loff_t *);
int numa_zonelist_order_handler(struct ctl_table *, int,
void *, size_t *, loff_t *);
extern int percpu_pagelist_fraction;
extern char numa_zonelist_order[];
#define NUMA_ZONELIST_ORDER_LEN 16

15
include/linux/nmi.h
View File

@ -202,16 +202,11 @@ static inline void watchdog_update_hrtimer_threshold(u64 period) { }
#endif
struct ctl_table;
extern int proc_watchdog(struct ctl_table *, int ,
void __user *, size_t *, loff_t *);
extern int proc_nmi_watchdog(struct ctl_table *, int ,
void __user *, size_t *, loff_t *);
extern int proc_soft_watchdog(struct ctl_table *, int ,
void __user *, size_t *, loff_t *);
extern int proc_watchdog_thresh(struct ctl_table *, int ,
void __user *, size_t *, loff_t *);
extern int proc_watchdog_cpumask(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int proc_watchdog(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_nmi_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *);
int proc_soft_watchdog(struct ctl_table *, int , void *, size_t *, loff_t *);
int proc_watchdog_thresh(struct ctl_table *, int , void *, size_t *, loff_t *);
int proc_watchdog_cpumask(struct ctl_table *, int, void *, size_t *, loff_t *);
#ifdef CONFIG_HAVE_ACPI_APEI_NMI
#include <asm/nmi.h>

13
include/linux/perf_event.h
View File

@ -1280,15 +1280,12 @@ extern int sysctl_perf_cpu_time_max_percent;
extern void perf_sample_event_took(u64 sample_len_ns);
extern int perf_proc_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
extern int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
int perf_proc_update_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int perf_event_max_stack_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
/* Access to perf_event_open(2) syscall. */
#define PERF_SECURITY_OPEN 0

3
include/linux/pid.h
View File

@ -108,6 +108,9 @@ extern void transfer_pid(struct task_struct *old, struct task_struct *new,
struct pid_namespace;
extern struct pid_namespace init_pid_ns;
extern int pid_max;
extern int pid_max_min, pid_max_max;
/*
* look up a PID in the hash table. Must be called with the tasklist_lock
* or rcu_read_lock() held.

2
include/linux/printk.h
View File

@ -189,7 +189,7 @@ extern int printk_delay_msec;
extern int dmesg_restrict;
extern int
devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void __user *buf,
devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void *buf,
size_t *lenp, loff_t *ppos);
extern void wake_up_klogd(void);

44
include/linux/sched/sysctl.h
View File

@ -12,9 +12,8 @@ extern unsigned int sysctl_hung_task_panic;
extern unsigned long sysctl_hung_task_timeout_secs;
extern unsigned long sysctl_hung_task_check_interval_secs;
extern int sysctl_hung_task_warnings;
extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos);
int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
#else
/* Avoid need for ifdefs elsewhere in the code */
enum { sysctl_hung_task_timeout_secs = 0 };
@ -43,8 +42,7 @@ extern __read_mostly unsigned int sysctl_sched_migration_cost;
extern __read_mostly unsigned int sysctl_sched_nr_migrate;
int sched_proc_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length,
loff_t *ppos);
void *buffer, size_t *length, loff_t *ppos);
#endif
/*
@ -72,33 +70,21 @@ extern unsigned int sysctl_sched_autogroup_enabled;
extern int sysctl_sched_rr_timeslice;
extern int sched_rr_timeslice;
extern int sched_rr_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
extern int sched_rt_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
#ifdef CONFIG_UCLAMP_TASK
extern int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
#endif
extern int sysctl_numa_balancing(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
extern int sysctl_schedstats(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
int sched_rr_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int sysctl_numa_balancing(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
int sysctl_schedstats(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL)
extern unsigned int sysctl_sched_energy_aware;
extern int sched_energy_aware_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
int sched_energy_aware_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
#endif
#endif /* _LINUX_SCHED_SYSCTL_H */

2
include/linux/security.h
View File

@ -211,7 +211,7 @@ struct request_sock;
#ifdef CONFIG_MMU
extern int mmap_min_addr_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
#endif
/* security_inode_init_security callback function to write xattrs */

59
include/linux/sysctl.h
View File

@ -44,35 +44,26 @@ struct ctl_dir;
extern const int sysctl_vals[];
typedef int proc_handler (struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
typedef int proc_handler(struct ctl_table *ctl, int write, void *buffer,
size_t *lenp, loff_t *ppos);
extern int proc_dostring(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_dointvec(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_douintvec(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_minmax(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_douintvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
extern int proc_dointvec_jiffies(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_ms_jiffies(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_doulongvec_minmax(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int,
void __user *, size_t *, loff_t *);
extern int proc_do_large_bitmap(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int proc_do_static_key(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
int proc_dostring(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_dointvec(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_douintvec(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_dointvec_minmax(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_douintvec_minmax(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
int proc_dointvec_jiffies(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_dointvec_userhz_jiffies(struct ctl_table *, int, void *, size_t *,
loff_t *);
int proc_dointvec_ms_jiffies(struct ctl_table *, int, void *, size_t *,
loff_t *);
int proc_doulongvec_minmax(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int, void *,
size_t *, loff_t *);
int proc_do_large_bitmap(struct ctl_table *, int, void *, size_t *, loff_t *);
int proc_do_static_key(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
/*
* Register a set of sysctl names by calling register_sysctl_table
@ -207,7 +198,15 @@ void unregister_sysctl_table(struct ctl_table_header * table);
extern int sysctl_init(void);
extern int pwrsw_enabled;
extern int unaligned_enabled;
extern int unaligned_dump_stack;
extern int no_unaligned_warning;
extern struct ctl_table sysctl_mount_point[];
extern struct ctl_table random_table[];
extern struct ctl_table firmware_config_table[];
extern struct ctl_table epoll_table[];
#else /* CONFIG_SYSCTL */
static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
@ -238,7 +237,7 @@ static inline void setup_sysctl_set(struct ctl_table_set *p,
#endif /* CONFIG_SYSCTL */
int sysctl_max_threads(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
int sysctl_max_threads(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos);
#endif /* _LINUX_SYSCTL_H */

3
include/linux/timer.h
View File

@ -201,8 +201,7 @@ struct ctl_table;
extern unsigned int sysctl_timer_migration;
int timer_migration_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
#endif
unsigned long __round_jiffies(unsigned long j, int cpu);

8
include/linux/vmstat.h
View File

@ -16,8 +16,8 @@ extern int sysctl_stat_interval;
#define DISABLE_NUMA_STAT 0
extern int sysctl_vm_numa_stat;
DECLARE_STATIC_KEY_TRUE(vm_numa_stat_key);
extern int sysctl_vm_numa_stat_handler(struct ctl_table *table,
int write, void __user *buffer, size_t *length, loff_t *ppos);
int sysctl_vm_numa_stat_handler(struct ctl_table *table, int write,
void *buffer, size_t *length, loff_t *ppos);
#endif
struct reclaim_stat {
@ -274,8 +274,8 @@ void cpu_vm_stats_fold(int cpu);
void refresh_zone_stat_thresholds(void);
struct ctl_table;
int vmstat_refresh(struct ctl_table *, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
int vmstat_refresh(struct ctl_table *, int write, void *buffer, size_t *lenp,
loff_t *ppos);
void drain_zonestat(struct zone *zone, struct per_cpu_pageset *);

28
include/linux/writeback.h
View File

@ -362,24 +362,18 @@ extern int vm_highmem_is_dirtyable;
extern int block_dump;
extern int laptop_mode;
extern int dirty_background_ratio_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
extern int dirty_background_bytes_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
extern int dirty_ratio_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
extern int dirty_bytes_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
int dirty_background_ratio_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int dirty_background_bytes_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int dirty_ratio_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int dirty_bytes_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
int dirtytime_interval_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);
struct ctl_table;
int dirty_writeback_centisecs_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
void *buffer, size_t *lenp, loff_t *ppos);
int dirty_writeback_centisecs_handler(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty);
unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh);

10
ipc/ipc_sysctl.c
View File

@ -24,7 +24,7 @@ static void *get_ipc(struct ctl_table *table)
#ifdef CONFIG_PROC_SYSCTL
static int proc_ipc_dointvec(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table ipc_table;
@ -35,7 +35,7 @@ static int proc_ipc_dointvec(struct ctl_table *table, int write,
}
static int proc_ipc_dointvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table ipc_table;
@ -46,7 +46,7 @@ static int proc_ipc_dointvec_minmax(struct ctl_table *table, int write,
}
static int proc_ipc_dointvec_minmax_orphans(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ipc_namespace *ns = current->nsproxy->ipc_ns;
int err = proc_ipc_dointvec_minmax(table, write, buffer, lenp, ppos);
@ -59,7 +59,7 @@ static int proc_ipc_dointvec_minmax_orphans(struct ctl_table *table, int write,
}
static int proc_ipc_doulongvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table ipc_table;
memcpy(&ipc_table, table, sizeof(ipc_table));
@ -70,7 +70,7 @@ static int proc_ipc_doulongvec_minmax(struct ctl_table *table, int write,
}
static int proc_ipc_auto_msgmni(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table ipc_table;
int dummy = 0;

4
ipc/mq_sysctl.c
View File

@ -19,7 +19,7 @@ static void *get_mq(struct ctl_table *table)
}
static int proc_mq_dointvec(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table mq_table;
memcpy(&mq_table, table, sizeof(mq_table));
@ -29,7 +29,7 @@ static int proc_mq_dointvec(struct ctl_table *table, int write,
}
static int proc_mq_dointvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table mq_table;
memcpy(&mq_table, table, sizeof(mq_table));

35
kernel/bpf/cgroup.c
View File

@ -1122,16 +1122,13 @@ const struct bpf_verifier_ops cg_dev_verifier_ops = {
* @head: sysctl table header
* @table: sysctl table
* @write: sysctl is being read (= 0) or written (= 1)
* @buf: pointer to buffer passed by user space
* @buf: pointer to buffer (in and out)
* @pcount: value-result argument: value is size of buffer pointed to by @buf,
* result is size of @new_buf if program set new value, initial value
* otherwise
* @ppos: value-result argument: value is position at which read from or write
* to sysctl is happening, result is new position if program overrode it,
* initial value otherwise
* @new_buf: pointer to pointer to new buffer that will be allocated if program
* overrides new value provided by user space on sysctl write
* NOTE: it's caller responsibility to free *new_buf if it was set
* @type: type of program to be executed
*
* Program is run when sysctl is being accessed, either read or written, and
@ -1142,8 +1139,7 @@ const struct bpf_verifier_ops cg_dev_verifier_ops = {
*/
int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
struct ctl_table *table, int write,
void __user *buf, size_t *pcount,
loff_t *ppos, void **new_buf,
void **buf, size_t *pcount, loff_t *ppos,
enum bpf_attach_type type)
{
struct bpf_sysctl_kern ctx = {
@ -1158,36 +1154,28 @@ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
.new_updated = 0,
};
struct cgroup *cgrp;
loff_t pos = 0;
int ret;
ctx.cur_val = kmalloc_track_caller(ctx.cur_len, GFP_KERNEL);
if (ctx.cur_val) {
mm_segment_t old_fs;
loff_t pos = 0;
old_fs = get_fs();
set_fs(KERNEL_DS);
if (table->proc_handler(table, 0, (void __user *)ctx.cur_val,
&ctx.cur_len, &pos)) {
/* Let BPF program decide how to proceed. */
ctx.cur_len = 0;
}
set_fs(old_fs);
} else {
if (!ctx.cur_val ||
table->proc_handler(table, 0, ctx.cur_val, &ctx.cur_len, &pos)) {
/* Let BPF program decide how to proceed. */
ctx.cur_len = 0;
}
if (write && buf && *pcount) {
if (write && *buf && *pcount) {
/* BPF program should be able to override new value with a
* buffer bigger than provided by user.
*/
ctx.new_val = kmalloc_track_caller(PAGE_SIZE, GFP_KERNEL);
ctx.new_len = min_t(size_t, PAGE_SIZE, *pcount);
if (!ctx.new_val ||
copy_from_user(ctx.new_val, buf, ctx.new_len))
if (ctx.new_val) {
memcpy(ctx.new_val, *buf, ctx.new_len);
} else {
/* Let BPF program decide how to proceed. */
ctx.new_len = 0;
}
}
rcu_read_lock();
@ -1198,7 +1186,8 @@ int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
kfree(ctx.cur_val);
if (ret == 1 && ctx.new_updated) {
*new_buf = ctx.new_val;
kfree(*buf);
*buf = ctx.new_val;
*pcount = ctx.new_len;
} else {
kfree(ctx.new_val);

2
kernel/events/callchain.c
View File

@ -236,7 +236,7 @@ exit_put:
* sysctl_perf_event_max_contexts_per_stack.
*/
int perf_event_max_stack_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int *value = table->data;
int new_value = *value, ret;

6
kernel/events/core.c
View File

@ -437,8 +437,7 @@ static void update_perf_cpu_limits(void)
static bool perf_rotate_context(struct perf_cpu_context *cpuctx);
int perf_proc_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
int perf_cpu = sysctl_perf_cpu_time_max_percent;
@ -462,8 +461,7 @@ int perf_proc_update_handler(struct ctl_table *table, int write,
int sysctl_perf_cpu_time_max_percent __read_mostly = DEFAULT_CPU_TIME_MAX_PERCENT;
int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);

2
kernel/kprobes.c
View File

@ -892,7 +892,7 @@ static void unoptimize_all_kprobes(void)
static DEFINE_MUTEX(kprobe_sysctl_mutex);
int sysctl_kprobes_optimization;
int proc_kprobes_optimization_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length,
void *buffer, size_t *length,
loff_t *ppos)
{
int ret;

4
kernel/latencytop.c
View File

@ -269,8 +269,8 @@ static int __init init_lstats_procfs(void)
return 0;
}
int sysctl_latencytop(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
int sysctl_latencytop(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int err;

2
kernel/pid_namespace.c
View File

@ -263,7 +263,7 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns)
#ifdef CONFIG_CHECKPOINT_RESTORE
static int pid_ns_ctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct pid_namespace *pid_ns = task_active_pid_ns(current);
struct ctl_table tmp = *table;

2
kernel/printk/printk.c
View File

@ -173,7 +173,7 @@ __setup("printk.devkmsg=", control_devkmsg);
char devkmsg_log_str[DEVKMSG_STR_MAX_SIZE] = "ratelimit";
int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
char old_str[DEVKMSG_STR_MAX_SIZE];
unsigned int old;

9
kernel/sched/core.c
View File

@ -1110,8 +1110,7 @@ static void uclamp_update_root_tg(void) { }
#endif
int sysctl_sched_uclamp_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
bool update_root_tg = false;
int old_min, old_max;
@ -2718,7 +2717,7 @@ void set_numabalancing_state(bool enabled)
#ifdef CONFIG_PROC_SYSCTL
int sysctl_numa_balancing(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table t;
int err;
@ -2792,8 +2791,8 @@ static void __init init_schedstats(void)
}
#ifdef CONFIG_PROC_SYSCTL
int sysctl_schedstats(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
int sysctl_schedstats(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct ctl_table t;
int err;

3
kernel/sched/fair.c
View File

@ -645,8 +645,7 @@ struct sched_entity *__pick_last_entity(struct cfs_rq *cfs_rq)
*/
int sched_proc_update_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
unsigned int factor = get_update_sysctl_factor();

10
kernel/sched/rt.c
View File

@ -2714,9 +2714,8 @@ static void sched_rt_do_global(void)
def_rt_bandwidth.rt_period = ns_to_ktime(global_rt_period());
}
int sched_rt_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
int sched_rt_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int old_period, old_runtime;
static DEFINE_MUTEX(mutex);
@ -2754,9 +2753,8 @@ undo:
return ret;
}
int sched_rr_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
int sched_rr_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int ret;
static DEFINE_MUTEX(mutex);

2
kernel/sched/topology.c
View File

@ -209,7 +209,7 @@ bool sched_energy_update;
#ifdef CONFIG_PROC_SYSCTL
int sched_energy_aware_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret, state;

2
kernel/seccomp.c
View File

@ -1776,7 +1776,7 @@ static void audit_actions_logged(u32 actions_logged, u32 old_actions_logged,
}
static int seccomp_actions_logged_handler(struct ctl_table *ro_table, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
int ret;

3027
kernel/sysctl.c
View File

File diff suppressed because it is too large Load Diff

3
kernel/time/timer.c
View File

@ -249,8 +249,7 @@ void timers_update_nohz(void)
}
int timer_migration_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;

2
kernel/trace/trace.c
View File

@ -2661,7 +2661,7 @@ static void output_printk(struct trace_event_buffer *fbuffer)
}
int tracepoint_printk_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
int save_tracepoint_printk;

2
kernel/umh.c
View File

@ -630,7 +630,7 @@ int call_usermodehelper(const char *path, char **argv, char **envp, int wait)
EXPORT_SYMBOL(call_usermodehelper);
static int proc_cap_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table t;
unsigned long cap_array[_KERNEL_CAPABILITY_U32S];

2
kernel/utsname_sysctl.c
View File

@ -30,7 +30,7 @@ static void *get_uts(struct ctl_table *table)
* to observe. Should this be in kernel/sys.c ????
*/
static int proc_do_uts_string(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table uts_table;
int r;

12
kernel/watchdog.c
View File

@ -661,7 +661,7 @@ static void proc_watchdog_update(void)
* proc_soft_watchdog | soft_watchdog_user_enabled | SOFT_WATCHDOG_ENABLED
*/
static int proc_watchdog_common(int which, struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int err, old, *param = table->data;
@ -688,7 +688,7 @@ static int proc_watchdog_common(int which, struct ctl_table *table, int write,
* /proc/sys/kernel/watchdog
*/
int proc_watchdog(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
return proc_watchdog_common(NMI_WATCHDOG_ENABLED|SOFT_WATCHDOG_ENABLED,
table, write, buffer, lenp, ppos);
@ -698,7 +698,7 @@ int proc_watchdog(struct ctl_table *table, int write,
* /proc/sys/kernel/nmi_watchdog
*/
int proc_nmi_watchdog(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
if (!nmi_watchdog_available && write)
return -ENOTSUPP;
@ -710,7 +710,7 @@ int proc_nmi_watchdog(struct ctl_table *table, int write,
* /proc/sys/kernel/soft_watchdog
*/
int proc_soft_watchdog(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
return proc_watchdog_common(SOFT_WATCHDOG_ENABLED,
table, write, buffer, lenp, ppos);
@ -720,7 +720,7 @@ int proc_soft_watchdog(struct ctl_table *table, int write,
* /proc/sys/kernel/watchdog_thresh
*/
int proc_watchdog_thresh(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int err, old;
@ -743,7 +743,7 @@ int proc_watchdog_thresh(struct ctl_table *table, int write,
* been brought online, if desired.
*/
int proc_watchdog_cpumask(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int err;

2
mm/compaction.c
View File

@ -2463,7 +2463,7 @@ int sysctl_compact_memory;
* /proc/sys/vm/compact_memory
*/
int sysctl_compaction_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
if (write)
compact_nodes();

9
mm/hugetlb.c
View File

@ -3352,7 +3352,7 @@ static unsigned int cpuset_mems_nr(unsigned int *array)
#ifdef CONFIG_SYSCTL
static int hugetlb_sysctl_handler_common(bool obey_mempolicy,
struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
struct hstate *h = &default_hstate;
unsigned long tmp = h->max_huge_pages;
@ -3375,7 +3375,7 @@ out:
}
int hugetlb_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
return hugetlb_sysctl_handler_common(false, table, write,
@ -3384,7 +3384,7 @@ int hugetlb_sysctl_handler(struct ctl_table *table, int write,
#ifdef CONFIG_NUMA
int hugetlb_mempolicy_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
return hugetlb_sysctl_handler_common(true, table, write,
buffer, length, ppos);
@ -3392,8 +3392,7 @@ int hugetlb_mempolicy_sysctl_handler(struct ctl_table *table, int write,
#endif /* CONFIG_NUMA */
int hugetlb_overcommit_handler(struct ctl_table *table, int write,
void __user *buffer,
size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
struct hstate *h = &default_hstate;
unsigned long tmp;

16
mm/page-writeback.c
View File

@ -512,8 +512,7 @@ bool node_dirty_ok(struct pglist_data *pgdat)
}
int dirty_background_ratio_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
@ -524,8 +523,7 @@ int dirty_background_ratio_handler(struct ctl_table *table, int write,
}
int dirty_background_bytes_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
@ -535,9 +533,8 @@ int dirty_background_bytes_handler(struct ctl_table *table, int write,
return ret;
}
int dirty_ratio_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
int dirty_ratio_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int old_ratio = vm_dirty_ratio;
int ret;
@ -551,8 +548,7 @@ int dirty_ratio_handler(struct ctl_table *table, int write,
}
int dirty_bytes_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
unsigned long old_bytes = vm_dirty_bytes;
int ret;
@ -1972,7 +1968,7 @@ bool wb_over_bg_thresh(struct bdi_writeback *wb)
* sysctl handler for /proc/sys/vm/dirty_writeback_centisecs
*/
int dirty_writeback_centisecs_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
unsigned int old_interval = dirty_writeback_interval;
int ret;

42
mm/page_alloc.c
View File

@ -5546,21 +5546,11 @@ char numa_zonelist_order[] = "Node";
* sysctl handler for numa_zonelist_order
*/
int numa_zonelist_order_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length,
loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
char *str;
int ret;
if (!write)
return proc_dostring(table, write, buffer, length, ppos);
str = memdup_user_nul(buffer, 16);
if (IS_ERR(str))
return PTR_ERR(str);
ret = __parse_numa_zonelist_order(str);
kfree(str);
return ret;
if (write)
return __parse_numa_zonelist_order(buffer);
return proc_dostring(table, write, buffer, length, ppos);
}
@ -7963,7 +7953,7 @@ core_initcall(init_per_zone_wmark_min)
* changes.
*/
int min_free_kbytes_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
int rc;
@ -7978,20 +7968,8 @@ int min_free_kbytes_sysctl_handler(struct ctl_table *table, int write,
return 0;
}
int watermark_boost_factor_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
{
int rc;
rc = proc_dointvec_minmax(table, write, buffer, length, ppos);
if (rc)
return rc;
return 0;
}
int watermark_scale_factor_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
int rc;
@ -8021,7 +7999,7 @@ static void setup_min_unmapped_ratio(void)
int sysctl_min_unmapped_ratio_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
int rc;
@ -8048,7 +8026,7 @@ static void setup_min_slab_ratio(void)
}
int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
int rc;
@ -8072,7 +8050,7 @@ int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *table, int write,
* if in function of the boot time zone sizes.
*/
int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
proc_dointvec_minmax(table, write, buffer, length, ppos);
setup_per_zone_lowmem_reserve();
@ -8094,7 +8072,7 @@ static void __zone_pcp_update(struct zone *zone)
* pagelist can have before it gets flushed back to buddy allocator.
*/
int percpu_pagelist_fraction_sysctl_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
struct zone *zone;
int old_percpu_pagelist_fraction;

10
mm/util.c
View File

@ -717,9 +717,8 @@ int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
unsigned long sysctl_user_reserve_kbytes __read_mostly = 1UL << 17; /* 128MB */
unsigned long sysctl_admin_reserve_kbytes __read_mostly = 1UL << 13; /* 8MB */
int overcommit_ratio_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
int overcommit_ratio_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int ret;
@ -729,9 +728,8 @@ int overcommit_ratio_handler(struct ctl_table *table, int write,
return ret;
}
int overcommit_kbytes_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
int overcommit_kbytes_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int ret;

4
mm/vmstat.c
View File

@ -76,7 +76,7 @@ static void invalid_numa_statistics(void)
static DEFINE_MUTEX(vm_numa_stat_lock);
int sysctl_vm_numa_stat_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *length, loff_t *ppos)
void *buffer, size_t *length, loff_t *ppos)
{
int ret, oldval;
@ -1751,7 +1751,7 @@ static void refresh_vm_stats(struct work_struct *work)
}
int vmstat_refresh(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
long val;
int err;

2
net/bridge/br_netfilter_hooks.c
View File

@ -1027,7 +1027,7 @@ int br_nf_hook_thresh(unsigned int hook, struct net *net,
#ifdef CONFIG_SYSCTL
static
int brnf_sysctl_call_tables(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;

28
net/core/neighbour.c
View File

@ -3379,7 +3379,7 @@ EXPORT_SYMBOL(neigh_app_ns);
static int unres_qlen_max = INT_MAX / SKB_TRUESIZE(ETH_FRAME_LEN);
static int proc_unres_qlen(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int size, ret;
struct ctl_table tmp = *ctl;
@ -3443,8 +3443,8 @@ static void neigh_proc_update(struct ctl_table *ctl, int write)
}
static int neigh_proc_dointvec_zero_intmax(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp,
loff_t *ppos)
{
struct ctl_table tmp = *ctl;
int ret;
@ -3457,8 +3457,8 @@ static int neigh_proc_dointvec_zero_intmax(struct ctl_table *ctl, int write,
return ret;
}
int neigh_proc_dointvec(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
int neigh_proc_dointvec(struct ctl_table *ctl, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
@ -3467,8 +3467,7 @@ int neigh_proc_dointvec(struct ctl_table *ctl, int write,
}
EXPORT_SYMBOL(neigh_proc_dointvec);
int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write,
void __user *buffer,
int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec_jiffies(ctl, write, buffer, lenp, ppos);
@ -3479,8 +3478,8 @@ int neigh_proc_dointvec_jiffies(struct ctl_table *ctl, int write,
EXPORT_SYMBOL(neigh_proc_dointvec_jiffies);
static int neigh_proc_dointvec_userhz_jiffies(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp,
loff_t *ppos)
{
int ret = proc_dointvec_userhz_jiffies(ctl, write, buffer, lenp, ppos);
@ -3489,8 +3488,7 @@ static int neigh_proc_dointvec_userhz_jiffies(struct ctl_table *ctl, int write,
}
int neigh_proc_dointvec_ms_jiffies(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec_ms_jiffies(ctl, write, buffer, lenp, ppos);
@ -3500,8 +3498,8 @@ int neigh_proc_dointvec_ms_jiffies(struct ctl_table *ctl, int write,
EXPORT_SYMBOL(neigh_proc_dointvec_ms_jiffies);
static int neigh_proc_dointvec_unres_qlen(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp,
loff_t *ppos)
{
int ret = proc_unres_qlen(ctl, write, buffer, lenp, ppos);
@ -3510,8 +3508,8 @@ static int neigh_proc_dointvec_unres_qlen(struct ctl_table *ctl, int write,
}
static int neigh_proc_base_reachable_time(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp,
loff_t *ppos)
{
struct neigh_parms *p = ctl->extra2;
int ret;

27
net/core/sysctl_net_core.c
View File

@ -45,7 +45,7 @@ EXPORT_SYMBOL(sysctl_devconf_inherit_init_net);
#ifdef CONFIG_RPS
static int rps_sock_flow_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
unsigned int orig_size, size;
int ret, i;
@ -115,8 +115,7 @@ static int rps_sock_flow_sysctl(struct ctl_table *table, int write,
static DEFINE_MUTEX(flow_limit_update_mutex);
static int flow_limit_cpu_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct sd_flow_limit *cur;
struct softnet_data *sd;
@ -180,10 +179,7 @@ write_unlock:
}
if (len < *lenp)
kbuf[len++] = '\n';
if (copy_to_user(buffer, kbuf, len)) {
ret = -EFAULT;
goto done;
}
memcpy(buffer, kbuf, len);
*lenp = len;
*ppos += len;
}
@ -194,8 +190,7 @@ done:
}
static int flow_limit_table_len_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
unsigned int old, *ptr;
int ret;
@ -217,7 +212,7 @@ static int flow_limit_table_len_sysctl(struct ctl_table *table, int write,
#ifdef CONFIG_NET_SCHED
static int set_default_qdisc(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
char id[IFNAMSIZ];
struct ctl_table tbl = {
@ -236,7 +231,7 @@ static int set_default_qdisc(struct ctl_table *table, int write,
#endif
static int proc_do_dev_weight(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
@ -251,7 +246,7 @@ static int proc_do_dev_weight(struct ctl_table *table, int write,
}
static int proc_do_rss_key(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table fake_table;
char buf[NETDEV_RSS_KEY_LEN * 3];
@ -264,7 +259,7 @@ static int proc_do_rss_key(struct ctl_table *table, int write,
#ifdef CONFIG_BPF_JIT
static int proc_dointvec_minmax_bpf_enable(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
int ret, jit_enable = *(int *)table->data;
@ -291,8 +286,7 @@ static int proc_dointvec_minmax_bpf_enable(struct ctl_table *table, int write,
# ifdef CONFIG_HAVE_EBPF_JIT
static int
proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@ -303,8 +297,7 @@ proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write,
static int
proc_dolongvec_minmax_bpf_restricted(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
if (!capable(CAP_SYS_ADMIN))
return -EPERM;

7
net/decnet/dn_dev.c
View File

@ -160,8 +160,8 @@ static int max_t3[] = { 8191 }; /* Must fit in 16 bits when multiplied by BCT3MU
static int min_priority[1];
static int max_priority[] = { 127 }; /* From DECnet spec */
static int dn_forwarding_proc(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
static int dn_forwarding_proc(struct ctl_table *, int, void *, size_t *,
loff_t *);
static struct dn_dev_sysctl_table {
struct ctl_table_header *sysctl_header;
struct ctl_table dn_dev_vars[5];
@ -245,8 +245,7 @@ static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
}
static int dn_forwarding_proc(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
#ifdef CONFIG_DECNET_ROUTER
struct net_device *dev = table->extra1;

27
net/decnet/sysctl_net_decnet.c
View File

@ -134,8 +134,7 @@ static int parse_addr(__le16 *addr, char *str)
}
static int dn_node_address_handler(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
char addr[DN_ASCBUF_LEN];
size_t len;
@ -148,10 +147,7 @@ static int dn_node_address_handler(struct ctl_table *table, int write,
if (write) {
len = (*lenp < DN_ASCBUF_LEN) ? *lenp : (DN_ASCBUF_LEN-1);
if (copy_from_user(addr, buffer, len))
return -EFAULT;
memcpy(addr, buffer, len);
addr[len] = 0;
strip_it(addr);
@ -173,11 +169,9 @@ static int dn_node_address_handler(struct ctl_table *table, int write,
len = strlen(addr);
addr[len++] = '\n';
if (len > *lenp) len = *lenp;
if (copy_to_user(buffer, addr, len))
return -EFAULT;
if (len > *lenp)
len = *lenp;
memcpy(buffer, addr, len);
*lenp = len;
*ppos += len;
@ -185,8 +179,7 @@ static int dn_node_address_handler(struct ctl_table *table, int write,
}
static int dn_def_dev_handler(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
size_t len;
struct net_device *dev;
@ -201,9 +194,7 @@ static int dn_def_dev_handler(struct ctl_table *table, int write,
if (*lenp > 16)
return -E2BIG;
if (copy_from_user(devname, buffer, *lenp))
return -EFAULT;
memcpy(devname, buffer, *lenp);
devname[*lenp] = 0;
strip_it(devname);
@ -238,9 +229,7 @@ static int dn_def_dev_handler(struct ctl_table *table, int write,
if (len > *lenp) len = *lenp;
if (copy_to_user(buffer, devname, len))
return -EFAULT;
memcpy(buffer, devname, len);
*lenp = len;
*ppos += len;

9
net/ipv4/devinet.c
View File

@ -2366,8 +2366,7 @@ static int devinet_conf_ifindex(struct net *net, struct ipv4_devconf *cnf)
}
static int devinet_conf_proc(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int old_value = *(int *)ctl->data;
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
@ -2419,8 +2418,7 @@ static int devinet_conf_proc(struct ctl_table *ctl, int write,
}
static int devinet_sysctl_forward(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int val = *valp;
@ -2463,8 +2461,7 @@ static int devinet_sysctl_forward(struct ctl_table *ctl, int write,
}
static int ipv4_doint_and_flush(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int val = *valp;

3
net/ipv4/route.c
View File

@ -3336,8 +3336,7 @@ static int ip_rt_gc_elasticity __read_mostly = 8;
static int ip_min_valid_pmtu __read_mostly = IPV4_MIN_MTU;
static int ipv4_sysctl_rtcache_flush(struct ctl_table *__ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = (struct net *)__ctl->extra1;

38
net/ipv4/sysctl_net_ipv4.c
View File

@ -71,8 +71,7 @@ static void set_local_port_range(struct net *net, int range[2])
/* Validate changes from /proc interface. */
static int ipv4_local_port_range(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net =
container_of(table->data, struct net, ipv4.ip_local_ports.range);
@ -107,7 +106,7 @@ static int ipv4_local_port_range(struct ctl_table *table, int write,
/* Validate changes from /proc interface. */
static int ipv4_privileged_ports(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = container_of(table->data, struct net,
ipv4.sysctl_ip_prot_sock);
@ -168,8 +167,7 @@ static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t hig
/* Validate changes from /proc interface. */
static int ipv4_ping_group_range(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct user_namespace *user_ns = current_user_ns();
int ret;
@ -204,8 +202,7 @@ static int ipv4_ping_group_range(struct ctl_table *table, int write,
}
static int ipv4_fwd_update_priority(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net;
int ret;
@ -221,7 +218,7 @@ static int ipv4_fwd_update_priority(struct ctl_table *table, int write,
}
static int proc_tcp_congestion_control(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = container_of(ctl->data, struct net,
ipv4.tcp_congestion_control);
@ -241,9 +238,8 @@ static int proc_tcp_congestion_control(struct ctl_table *ctl, int write,
}
static int proc_tcp_available_congestion_control(struct ctl_table *ctl,
int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
int ret;
@ -258,9 +254,8 @@ static int proc_tcp_available_congestion_control(struct ctl_table *ctl,
}
static int proc_allowed_congestion_control(struct ctl_table *ctl,
int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
int ret;
@ -296,8 +291,7 @@ static int sscanf_key(char *buf, __le32 *key)
}
static int proc_tcp_fastopen_key(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = container_of(table->data, struct net,
ipv4.sysctl_tcp_fastopen);
@ -399,7 +393,7 @@ static void proc_configure_early_demux(int enabled, int protocol)
}
static int proc_tcp_early_demux(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret = 0;
@ -415,7 +409,7 @@ static int proc_tcp_early_demux(struct ctl_table *table, int write,
}
static int proc_udp_early_demux(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret = 0;
@ -431,8 +425,7 @@ static int proc_udp_early_demux(struct ctl_table *table, int write,
}
static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table,
int write,
void __user *buffer,
int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct net *net = container_of(table->data, struct net,
@ -447,8 +440,7 @@ static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table,
}
static int proc_tcp_available_ulp(struct ctl_table *ctl,
int write,
void __user *buffer, size_t *lenp,
int write, void *buffer, size_t *lenp,
loff_t *ppos)
{
struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, };
@ -466,7 +458,7 @@ static int proc_tcp_available_ulp(struct ctl_table *ctl,
#ifdef CONFIG_IP_ROUTE_MULTIPATH
static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
struct net *net = container_of(table->data, struct net,

33
net/ipv6/addrconf.c
View File

@ -6095,9 +6095,8 @@ static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
#ifdef CONFIG_SYSCTL
static
int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
static int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int val = *valp;
@ -6121,9 +6120,8 @@ int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
return ret;
}
static
int addrconf_sysctl_mtu(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
static int addrconf_sysctl_mtu(struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct inet6_dev *idev = ctl->extra1;
int min_mtu = IPV6_MIN_MTU;
@ -6193,9 +6191,8 @@ static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int newf)
return 0;
}
static
int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
static int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int val = *valp;
@ -6219,9 +6216,8 @@ int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
return ret;
}
static
int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
static int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int ret;
@ -6262,7 +6258,7 @@ int addrconf_sysctl_proxy_ndp(struct ctl_table *ctl, int write,
}
static int addrconf_sysctl_addr_gen_mode(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
int ret = 0;
@ -6324,7 +6320,7 @@ out:
}
static int addrconf_sysctl_stable_secret(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
void *buffer, size_t *lenp,
loff_t *ppos)
{
int err;
@ -6391,8 +6387,7 @@ out:
static
int addrconf_sysctl_ignore_routes_with_linkdown(struct ctl_table *ctl,
int write,
void __user *buffer,
int write, void *buffer,
size_t *lenp,
loff_t *ppos)
{
@ -6492,10 +6487,8 @@ int addrconf_disable_policy(struct ctl_table *ctl, int *valp, int val)
return 0;
}
static
int addrconf_sysctl_disable_policy(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
static int addrconf_sysctl_disable_policy(struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int val = *valp;

3
net/ipv6/ndisc.c
View File

@ -1835,7 +1835,8 @@ static void ndisc_warn_deprecated_sysctl(struct ctl_table *ctl,
}
}
int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos)
int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct net_device *dev = ctl->extra1;
struct inet6_dev *idev;

5
net/ipv6/route.c
View File

@ -6088,9 +6088,8 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v)
#ifdef CONFIG_SYSCTL
static
int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
static int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net;
int delay;

3
net/ipv6/sysctl_net_ipv6.c
View File

@ -26,8 +26,7 @@ static int auto_flowlabels_min;
static int auto_flowlabels_max = IP6_AUTO_FLOW_LABEL_MAX;
static int proc_rt6_multipath_hash_policy(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net;
int ret;

5
net/mpls/af_mpls.c
View File

@ -1362,8 +1362,7 @@ done:
(&((struct mpls_dev *)0)->field)
static int mpls_conf_proc(struct ctl_table *ctl, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int oval = *(int *)ctl->data;
int ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
@ -2594,7 +2593,7 @@ nolabels:
}
static int mpls_platform_labels(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = table->data;
int platform_labels = net->mpls.platform_labels;

6
net/netfilter/ipvs/ip_vs_ctl.c
View File

@ -1736,7 +1736,7 @@ static int three = 3;
static int
proc_do_defense_mode(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct netns_ipvs *ipvs = table->extra2;
int *valp = table->data;
@ -1763,7 +1763,7 @@ proc_do_defense_mode(struct ctl_table *table, int write,
static int
proc_do_sync_threshold(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = table->data;
int val[2];
@ -1788,7 +1788,7 @@ proc_do_sync_threshold(struct ctl_table *table, int write,
static int
proc_do_sync_ports(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int *valp = table->data;
int val = *valp;

2
net/netfilter/nf_conntrack_standalone.c
View File

@ -517,7 +517,7 @@ static unsigned int nf_conntrack_htable_size_user __read_mostly;
static int
nf_conntrack_hash_sysctl(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;

2
net/netfilter/nf_log.c
View File

@ -414,7 +414,7 @@ static struct ctl_table nf_log_sysctl_ftable[] = {
};
static int nf_log_proc_dostring(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
const struct nf_logger *logger;
char buf[NFLOGGER_NAME_LEN];

3
net/phonet/sysctl.c
View File

@ -49,8 +49,7 @@ void phonet_get_local_port_range(int *min, int *max)
}
static int proc_local_port_range(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
int range[2] = {local_port_range[0], local_port_range[1]};

6
net/rds/tcp.c
View File

@ -62,8 +62,7 @@ static atomic_t rds_tcp_unloading = ATOMIC_INIT(0);
static struct kmem_cache *rds_tcp_conn_slab;
static int rds_tcp_skbuf_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *fpos);
void *buffer, size_t *lenp, loff_t *fpos);
static int rds_tcp_min_sndbuf = SOCK_MIN_SNDBUF;
static int rds_tcp_min_rcvbuf = SOCK_MIN_RCVBUF;
@ -676,8 +675,7 @@ static void rds_tcp_sysctl_reset(struct net *net)
}
static int rds_tcp_skbuf_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *fpos)
void *buffer, size_t *lenp, loff_t *fpos)
{
struct net *net = current->nsproxy->net_ns;
int err;

32
net/sctp/sysctl.c
View File

@ -43,20 +43,15 @@ static unsigned long max_autoclose_max =
? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ;
static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, void *buffer,
size_t *lenp, loff_t *ppos);
static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
static int proc_sctp_do_auth(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
void *buffer, size_t *lenp, loff_t *ppos);
static struct ctl_table sctp_table[] = {
{
@ -343,8 +338,7 @@ static struct ctl_table sctp_net_table[] = {
};
static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
struct ctl_table tbl;
@ -389,8 +383,7 @@ static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write,
}
static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
unsigned int min = *(unsigned int *) ctl->extra1;
@ -418,8 +411,7 @@ static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write,
}
static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
unsigned int min = *(unsigned int *) ctl->extra1;
@ -447,8 +439,7 @@ static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
}
static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
if (write)
pr_warn_once("Changing rto_alpha or rto_beta may lead to "
@ -458,8 +449,7 @@ static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write,
}
static int proc_sctp_do_auth(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
struct ctl_table tbl;

29
net/sunrpc/sysctl.c
View File

@ -60,7 +60,7 @@ rpc_unregister_sysctl(void)
}
static int proc_do_xprt(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
char tmpbuf[256];
size_t len;
@ -70,15 +70,15 @@ static int proc_do_xprt(struct ctl_table *table, int write,
return 0;
}
len = svc_print_xprts(tmpbuf, sizeof(tmpbuf));
return simple_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len);
return memory_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len);
}
static int
proc_dodebug(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
proc_dodebug(struct ctl_table *table, int write, void *buffer, size_t *lenp,
loff_t *ppos)
{
char tmpbuf[20], c, *s = NULL;
char __user *p;
char tmpbuf[20], *s = NULL;
char *p;
unsigned int value;
size_t left, len;
@ -90,18 +90,17 @@ proc_dodebug(struct ctl_table *table, int write,
left = *lenp;
if (write) {
if (!access_ok(buffer, left))
return -EFAULT;
p = buffer;
while (left && __get_user(c, p) >= 0 && isspace(c))
left--, p++;
while (left && isspace(*p)) {
left--;
p++;
}
if (!left)
goto done;
if (left > sizeof(tmpbuf) - 1)
return -EINVAL;
if (copy_from_user(tmpbuf, p, left))
return -EFAULT;
memcpy(tmpbuf, p, left);
tmpbuf[left] = '\0';
value = simple_strtol(tmpbuf, &s, 0);
@ -121,11 +120,9 @@ proc_dodebug(struct ctl_table *table, int write,
len = sprintf(tmpbuf, "0x%04x", *(unsigned int *) table->data);
if (len > left)
len = left;
if (copy_to_user(buffer, tmpbuf, len))
return -EFAULT;
memcpy(buffer, tmpbuf, len);
if ((left -= len) > 0) {
if (put_user('\n', (char __user *)buffer + len))
return -EFAULT;
*((char *)buffer + len) = '\n';
left--;
}
}

7
net/sunrpc/xprtrdma/svc_rdma.c
View File

@ -80,8 +80,7 @@ atomic_t rdma_stat_sq_prod;
* current value.
*/
static int read_reset_stat(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
atomic_t *stat = (atomic_t *)table->data;
@ -103,8 +102,8 @@ static int read_reset_stat(struct ctl_table *table, int write,
len -= *ppos;
if (len > *lenp)
len = *lenp;
if (len && copy_to_user(buffer, str_buf, len))
return -EFAULT;
if (len)
memcpy(buffer, str_buf, len);
*lenp = len;
*ppos += len;
}

2
security/apparmor/lsm.c
View File

@ -1696,7 +1696,7 @@ static int __init alloc_buffers(void)
#ifdef CONFIG_SYSCTL
static int apparmor_dointvec(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
if (!policy_admin_capable(NULL))
return -EPERM;

2
security/min_addr.c
View File

@ -30,7 +30,7 @@ static void update_mmap_min_addr(void)
* calls update_mmap_min_addr() so non MAP_FIXED hints get rounded properly
*/
int mmap_min_addr_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
int ret;

2
security/yama/yama_lsm.c
View File

@ -430,7 +430,7 @@ static struct security_hook_list yama_hooks[] __lsm_ro_after_init = {
#ifdef CONFIG_SYSCTL
static int yama_dointvec_minmax(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
void *buffer, size_t *lenp, loff_t *ppos)
{
struct ctl_table table_copy;