bpf...d_path(): constify path argument

Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/bpf_fs_kfuncs.c b/fs/bpf_fs_kfuncs.c
index 1e36a12b88f75bdf885f3f07efe0c3f061595d21..5ace2511fec5117db02c7c84237c42358e8b4a2b 100644 (file)
--- a/fs/bpf_fs_kfuncs.c
+++ b/fs/bpf_fs_kfuncs.c
@@ -79,7 +79,7 @@ __bpf_kfunc void bpf_put_file(struct file *file)
  * pathname in *buf*, including the NUL termination character. On error, a
  * negative integer is returned.
  */
-__bpf_kfunc int bpf_path_d_path(struct path *path, char *buf, size_t buf__sz)
+__bpf_kfunc int bpf_path_d_path(const struct path *path, char *buf, size_t buf__sz)
 {
        int len;
        char *ret;

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 3ae52978cae61a5d60b43c764d3e267bd32e1085..a8bd6a7351a32031b4051749a983f6911c139cce 100644 (file)
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -900,7 +900,7 @@ const struct bpf_func_proto bpf_send_signal_thread_proto = {
        .arg1_type      = ARG_ANYTHING,
 };
 
-BPF_CALL_3(bpf_d_path, struct path *, path, char *, buf, u32, sz)
+BPF_CALL_3(bpf_d_path, const struct path *, path, char *, buf, u32, sz)
 {
        struct path copy;
        long len;

diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing/selftests/bpf/bpf_experimental.h
index da7e230f2781e1e1181ea02c668b5a8f7f718051..c15797660cdff9e5f6b6f1ab85f788450fe35aa1 100644 (file)
--- a/tools/testing/selftests/bpf/bpf_experimental.h
+++ b/tools/testing/selftests/bpf/bpf_experimental.h
@@ -219,7 +219,7 @@ extern void bpf_put_file(struct file *file) __ksym;
  *     including the NULL termination character, stored in the supplied
  *     buffer. On error, a negative integer is returned.
  */
-extern int bpf_path_d_path(struct path *path, char *buf, size_t buf__sz) __ksym;
+extern int bpf_path_d_path(const struct path *path, char *buf, size_t buf__sz) __ksym;
 
 /* This macro must be used to mark the exception callback corresponding to the
  * main program. For example: