[PATCH bpf-next 3/6] tools/bpf: sync uapi/bpf.h

Alexei Starovoitov
2018-10-04T02:58:36Z

sync uapi/bpf.h from kernel into tools

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---
tools/include/uapi/linux/bpf.h | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index f9187b41dff6..c0df8dd99edc 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -154,6 +154,7 @@ enum bpf_prog_type {
BPF_PROG_TYPE_LIRC_MODE2,
BPF_PROG_TYPE_SK_REUSEPORT,
BPF_PROG_TYPE_FLOW_DISSECTOR,
+ BPF_PROG_TYPE_FILE_FILTER,
};

enum bpf_attach_type {
@@ -175,6 +176,7 @@ enum bpf_attach_type {
BPF_CGROUP_UDP6_SENDMSG,
BPF_LIRC_MODE2,
BPF_FLOW_DISSECTOR,
+ BPF_CGROUP_FILE_OPEN,
__MAX_BPF_ATTACH_TYPE
};

@@ -2215,6 +2217,18 @@ union bpf_attr {
* pointer that was returned from bpf_sk_lookup_xxx\ ().
* Return
* 0 on success, or a negative error in case of failure.
+ *
+ * int bpf_get_file_path(struct bpf_file_info *file, char *buf, u32 size_of_buf)
+ * Description
+ * Reconstruct the full path of *file* and store it into *buf* of
+ * *size_of_buf*. The *size_of_buf* must be strictly positive.
+ * On success, the helper makes sure that the *buf* is NUL-terminated.
+ * On failure, it is filled with string "(error)".
+ * This helper should only be used for debugging.
+ * 'char *path' should never be used for permission checks.
+ * Return
+ * 0 on success, or a negative error in case of failure.
+ *
*/
#define __BPF_FUNC_MAPPER(FN) \
FN(unspec), \
@@ -2303,7 +2317,8 @@ union bpf_attr {
FN(skb_ancestor_cgroup_id), \
FN(sk_lookup_tcp), \
FN(sk_lookup_udp), \
- FN(sk_release),
+ FN(sk_release), \
+ FN(get_file_path),

/* integer value in 'imm' field of BPF_CALL instruction selects which helper
* function eBPF program intends to call
@@ -2896,4 +2911,15 @@ struct bpf_flow_keys {
};
};

+struct bpf_file_info {
+ __u64 inode;
+ __u32 dev_major;
+ __u32 dev_minor;
+ __u32 fs_magic;
+ __u32 mnt_id;
+ __u32 nlink;
+ __u32 mode; /* file mode S_ISDIR, S_ISLNK, 0755, etc */
+ __u32 flags; /* open flags O_RDWR, O_CREAT, etc */
+};
+
#endif /* _UAPI__LINUX_BPF_H__ */
--
2.17.1