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selftests/bpf: Fix const'ness in cgroup_helpers 

Lack of const in cgroup helpers signatures forces to write ugly client
code. Fix it.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Andrey Ignatov 2018-07-11 17:33:34 -07:00 committed by Daniel Borkmann
parent 060a7fccd3
commit 04c1341115
2 changed files with 6 additions and 6 deletions
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6
tools/testing/selftests/bpf/cgroup_helpers.c
View File

@ -118,7 +118,7 @@ static int join_cgroup_from_top(char *cgroup_path)
*
* On success, it returns 0, otherwise on failure it returns 1.
*/
int join_cgroup(char *path)
int join_cgroup(const char *path)
{
char cgroup_path[PATH_MAX + 1];
@ -158,7 +158,7 @@ void cleanup_cgroup_environment(void)
* On success, it returns the file descriptor. On failure it returns 0.
* If there is a failure, it prints the error to stderr.
*/
int create_and_get_cgroup(char *path)
int create_and_get_cgroup(const char *path)
{
char cgroup_path[PATH_MAX + 1];
int fd;
@ -186,7 +186,7 @@ int create_and_get_cgroup(char *path)
* which is an invalid cgroup id.
* If there is a failure, it prints the error to stderr.
*/
unsigned long long get_cgroup_id(char *path)
unsigned long long get_cgroup_id(const char *path)
{
int dirfd, err, flags, mount_id, fhsize;
union {

6
tools/testing/selftests/bpf/cgroup_helpers.h
View File

@ -9,10 +9,10 @@
__FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)
int create_and_get_cgroup(char *path);
int join_cgroup(char *path);
int create_and_get_cgroup(const char *path);
int join_cgroup(const char *path);
int setup_cgroup_environment(void);
void cleanup_cgroup_environment(void);
unsigned long long get_cgroup_id(char *path);
unsigned long long get_cgroup_id(const char *path);
#endif