Commit 57e3707e authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Joel Granados
Browse files

bpf: Constify ctl_table argument of filter function 



The sysctl core is moving to allow "struct ctl_table" in read-only memory.
As a preparation for that all functions handling "struct ctl_table" need
to be able to work with "const struct ctl_table".
As __cgroup_bpf_run_filter_sysctl() does not modify its table, it can be
adapted trivially.

Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Signed-off-by: default avatarJoel Granados <joel.granados@kernel.org>
parent 8cf0b939

include/linux/bpf-cgroup.h

+1 −1
Original line number Diff line number Diff line
@@ -138,7 +138,7 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor, 
				      short access, enum cgroup_bpf_attach_type atype);



int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,

				   struct ctl_table *table, int write,

				   const struct ctl_table *table, int write,

				   char **buf, size_t *pcount, loff_t *ppos,

				   enum cgroup_bpf_attach_type atype);

kernel/bpf/cgroup.c

+1 −1
Original line number Diff line number Diff line
@@ -1691,7 +1691,7 @@ const struct bpf_verifier_ops cg_dev_verifier_ops = { 
 * returned value != 1 during execution. In all other cases 0 is returned.

 */

int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,

				   struct ctl_table *table, int write,

				   const struct ctl_table *table, int write,

				   char **buf, size_t *pcount, loff_t *ppos,

				   enum cgroup_bpf_attach_type atype)

{