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-rw-r--r--tools/lib/bpf/bpf.c17
-rw-r--r--tools/lib/bpf/bpf.h18
-rw-r--r--tools/lib/bpf/libbpf.map2
3 files changed, 32 insertions, 5 deletions
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 128ac723c4ea..ed86b37d8024 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -572,20 +572,30 @@ int bpf_map_update_batch(int fd, const void *keys, const void *values, __u32 *co
(void *)keys, (void *)values, count, opts);
}
-int bpf_obj_pin(int fd, const char *pathname)
+int bpf_obj_pin_opts(int fd, const char *pathname, const struct bpf_obj_pin_opts *opts)
{
- const size_t attr_sz = offsetofend(union bpf_attr, file_flags);
+ const size_t attr_sz = offsetofend(union bpf_attr, path_fd);
union bpf_attr attr;
int ret;
+ if (!OPTS_VALID(opts, bpf_obj_pin_opts))
+ return libbpf_err(-EINVAL);
+
memset(&attr, 0, attr_sz);
+ attr.path_fd = OPTS_GET(opts, path_fd, 0);
attr.pathname = ptr_to_u64((void *)pathname);
+ attr.file_flags = OPTS_GET(opts, file_flags, 0);
attr.bpf_fd = fd;
ret = sys_bpf(BPF_OBJ_PIN, &attr, attr_sz);
return libbpf_err_errno(ret);
}
+int bpf_obj_pin(int fd, const char *pathname)
+{
+ return bpf_obj_pin_opts(fd, pathname, NULL);
+}
+
int bpf_obj_get(const char *pathname)
{
return bpf_obj_get_opts(pathname, NULL);
@@ -593,7 +603,7 @@ int bpf_obj_get(const char *pathname)
int bpf_obj_get_opts(const char *pathname, const struct bpf_obj_get_opts *opts)
{
- const size_t attr_sz = offsetofend(union bpf_attr, file_flags);
+ const size_t attr_sz = offsetofend(union bpf_attr, path_fd);
union bpf_attr attr;
int fd;
@@ -601,6 +611,7 @@ int bpf_obj_get_opts(const char *pathname, const struct bpf_obj_get_opts *opts)
return libbpf_err(-EINVAL);
memset(&attr, 0, attr_sz);
+ attr.path_fd = OPTS_GET(opts, path_fd, 0);
attr.pathname = ptr_to_u64((void *)pathname);
attr.file_flags = OPTS_GET(opts, file_flags, 0);
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index a2c091389b18..9aa0ee473754 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -284,16 +284,30 @@ LIBBPF_API int bpf_map_update_batch(int fd, const void *keys, const void *values
__u32 *count,
const struct bpf_map_batch_opts *opts);
-struct bpf_obj_get_opts {
+struct bpf_obj_pin_opts {
size_t sz; /* size of this struct for forward/backward compatibility */
__u32 file_flags;
+ int path_fd;
size_t :0;
};
-#define bpf_obj_get_opts__last_field file_flags
+#define bpf_obj_pin_opts__last_field path_fd
LIBBPF_API int bpf_obj_pin(int fd, const char *pathname);
+LIBBPF_API int bpf_obj_pin_opts(int fd, const char *pathname,
+ const struct bpf_obj_pin_opts *opts);
+
+struct bpf_obj_get_opts {
+ size_t sz; /* size of this struct for forward/backward compatibility */
+
+ __u32 file_flags;
+ int path_fd;
+
+ size_t :0;
+};
+#define bpf_obj_get_opts__last_field path_fd
+
LIBBPF_API int bpf_obj_get(const char *pathname);
LIBBPF_API int bpf_obj_get_opts(const char *pathname,
const struct bpf_obj_get_opts *opts);
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index 9171ac89a802..7521a2fb7626 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -393,4 +393,6 @@ LIBBPF_1.2.0 {
} LIBBPF_1.1.0;
LIBBPF_1.3.0 {
+ global:
+ bpf_obj_pin_opts;
} LIBBPF_1.2.0;