cgroups: cleanup and remove unused cgroup2_devices code

[mirror_lxcfs.git] / src / cgroups / cgroup2_devices.h

diff --git a/src/cgroups/cgroup2_devices.h b/src/cgroups/cgroup2_devices.h
deleted file mode 100644 (file)
index 6de1021..0000000
--- a/src/cgroups/cgroup2_devices.h
+++ /dev/null
@@ -1,136 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
-
-/* Parts of this taken from systemd's implementation. */
-
-#ifndef __LXC_CGROUP2_DEVICES_H
-#define __LXC_CGROUP2_DEVICES_H
-
-#include "config.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <sys/stat.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#ifdef HAVE_STRUCT_BPF_CGROUP_DEV_CTX
-#include <linux/bpf.h>
-#include <linux/filter.h>
-#endif
-
-#include "../syscall_numbers.h"
-
-#if !HAVE_BPF
-
-union bpf_attr;
-
-enum {
-       LXC_BPF_DEVICE_CGROUP_LOCAL_RULE = -1,
-       LXC_BPF_DEVICE_CGROUP_ALLOWLIST  =  0,
-       LXC_BPF_DEVICE_CGROUP_DENYLIST  =  1,
-};
-
-static inline int missing_bpf(int cmd, union bpf_attr *attr, size_t size)
-{
-       return (int)syscall(__NR_bpf, cmd, attr, size);
-}
-
-#define bpf missing_bpf
-#endif
-
-struct bpf_program {
-       int device_list_type;
-       int kernel_fd;
-       uint32_t prog_type;
-
-       size_t n_instructions;
-#ifdef HAVE_STRUCT_BPF_CGROUP_DEV_CTX
-       struct bpf_insn *instructions;
-#endif /* HAVE_STRUCT_BPF_CGROUP_DEV_CTX */
-
-       char *attached_path;
-       int attached_type;
-       uint32_t attached_flags;
-};
-
-#ifdef HAVE_STRUCT_BPF_CGROUP_DEV_CTX
-struct bpf_program *bpf_program_new(uint32_t prog_type);
-int bpf_program_init(struct bpf_program *prog);
-int bpf_program_append_device(struct bpf_program *prog,
-                             struct device_item *device);
-int bpf_program_finalize(struct bpf_program *prog);
-int bpf_program_cgroup_attach(struct bpf_program *prog, int type,
-                             const char *path, uint32_t flags);
-int bpf_program_cgroup_detach(struct bpf_program *prog);
-void bpf_program_free(struct bpf_program *prog);
-bool bpf_devices_cgroup_supported(void);
-static inline void __auto_bpf_program_free__(struct bpf_program **prog)
-{
-       if (*prog) {
-               bpf_program_free(*prog);
-               *prog = NULL;
-       }
-}
-#else /* HAVE_STRUCT_BPF_CGROUP_DEV_CTX */
-static inline struct bpf_program *bpf_program_new(uint32_t prog_type)
-{
-       errno = ENOSYS;
-       return NULL;
-}
-
-static inline int bpf_program_init(struct bpf_program *prog)
-{
-       errno = ENOSYS;
-       return -1;
-}
-
-static inline int bpf_program_append_device(struct bpf_program *prog, char type,
-                                           int major, int minor,
-                                           const char *access, int allow)
-{
-       errno = ENOSYS;
-       return -1;
-}
-
-static inline int bpf_program_finalize(struct bpf_program *prog)
-{
-       errno = ENOSYS;
-       return -1;
-}
-
-static inline int bpf_program_cgroup_attach(struct bpf_program *prog, int type,
-                                           const char *path, uint32_t flags)
-{
-       errno = ENOSYS;
-       return -1;
-}
-
-static inline int bpf_program_cgroup_detach(struct bpf_program *prog)
-{
-       errno = ENOSYS;
-       return -1;
-}
-
-static inline void bpf_program_free(struct bpf_program *prog)
-{
-}
-
-
-static inline bool bpf_devices_cgroup_supported(void)
-{
-       return false;
-}
-
-static inline void __auto_bpf_program_free__(struct bpf_program **prog)
-{
-}
-
-#endif /* HAVE_BPF */
-
-define_cleanup_function(struct bpf_program *, bpf_program_free);
-
-#endif /* __LXC_CGROUP2_DEVICES_H */