A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 11:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

BACKPORT: sysctl: pass kernel pointers to ->proc_handler

Browse source 
Instead of having all the sysctl handlers deal with user pointers, which
is rather hairy in terms of the BPF interaction, copy the input to and
from  userspace in common code.  This also means that the strings are
always NUL-terminated by the common code, making the API a little bit
safer.

As most handler just pass through the data to one of the common handlers
a lot of the changes are mechnical.

Change-Id: Ib7ad5ec475ea28257d651bdea23a4026a268c576
Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Andrey Ignatov <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2020-04-24 08:43:38 +02:00 • committed by basamaryan
commit 97a739c638
No known key found for this signature in database
GPG key ID: 210D5384FB2A5885
86 changed files with 458 additions and 639 deletions
Download patch file Download diff file Expand all files Collapse all files

9
net/ipv4/devinet.c
View file

@ -2393,8 +2393,7 @@ 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);
@ -2446,8 +2445,7 @@ 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;
@ -2490,8 +2488,7 @@ 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

@ -3267,8 +3267,7 @@ 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;

34
net/ipv4/sysctl_net_ipv4.c
View file

@ -75,8 +75,7 @@ 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);
@ -111,7 +110,7 @@ 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);
@ -172,8 +171,7 @@ 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;
@ -208,8 +206,7 @@ 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;
@ -225,7 +222,7 @@ 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);
@ -245,9 +242,8 @@ 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;
@ -262,9 +258,8 @@ 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;
@ -300,8 +295,7 @@ 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);
@ -368,8 +362,7 @@ bad_key:
}
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,
@ -384,8 +377,7 @@ 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, };
@ -403,7 +395,7 @@ 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,