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Diffstat (limited to '')
-rw-r--r-- | tools/testing/selftests/bpf/progs/test_module_attach.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_module_attach.c b/tools/testing/selftests/bpf/progs/test_module_attach.c new file mode 100644 index 000000000..08628afed --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_module_attach.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2020 Facebook */ + +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> +#include <bpf/bpf_core_read.h> +#include "../bpf_testmod/bpf_testmod.h" + +__u32 raw_tp_read_sz = 0; + +SEC("raw_tp/bpf_testmod_test_read") +int BPF_PROG(handle_raw_tp, + struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx) +{ + raw_tp_read_sz = BPF_CORE_READ(read_ctx, len); + return 0; +} + +__u32 raw_tp_bare_write_sz = 0; + +SEC("raw_tp/bpf_testmod_test_write_bare") +int BPF_PROG(handle_raw_tp_bare, + struct task_struct *task, struct bpf_testmod_test_write_ctx *write_ctx) +{ + raw_tp_bare_write_sz = BPF_CORE_READ(write_ctx, len); + return 0; +} + +int raw_tp_writable_bare_in_val = 0; +int raw_tp_writable_bare_early_ret = 0; +int raw_tp_writable_bare_out_val = 0; + +SEC("raw_tp.w/bpf_testmod_test_writable_bare") +int BPF_PROG(handle_raw_tp_writable_bare, + struct bpf_testmod_test_writable_ctx *writable) +{ + raw_tp_writable_bare_in_val = writable->val; + writable->early_ret = raw_tp_writable_bare_early_ret; + writable->val = raw_tp_writable_bare_out_val; + return 0; +} + +__u32 tp_btf_read_sz = 0; + +SEC("tp_btf/bpf_testmod_test_read") +int BPF_PROG(handle_tp_btf, + struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx) +{ + tp_btf_read_sz = read_ctx->len; + return 0; +} + +__u32 fentry_read_sz = 0; + +SEC("fentry/bpf_testmod_test_read") +int BPF_PROG(handle_fentry, + struct file *file, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len) +{ + fentry_read_sz = len; + return 0; +} + +__u32 fentry_manual_read_sz = 0; + +SEC("fentry") +int BPF_PROG(handle_fentry_manual, + struct file *file, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len) +{ + fentry_manual_read_sz = len; + return 0; +} + +__u32 fexit_read_sz = 0; +int fexit_ret = 0; + +SEC("fexit/bpf_testmod_test_read") +int BPF_PROG(handle_fexit, + struct file *file, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len, + int ret) +{ + fexit_read_sz = len; + fexit_ret = ret; + return 0; +} + +SEC("fexit/bpf_testmod_return_ptr") +int BPF_PROG(handle_fexit_ret, int arg, struct file *ret) +{ + long buf = 0; + + bpf_probe_read_kernel(&buf, 8, ret); + bpf_probe_read_kernel(&buf, 8, (char *)ret + 256); + *(volatile long long *)ret; + *(volatile int *)&ret->f_mode; + return 0; +} + +__u32 fmod_ret_read_sz = 0; + +SEC("fmod_ret/bpf_testmod_test_read") +int BPF_PROG(handle_fmod_ret, + struct file *file, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len) +{ + fmod_ret_read_sz = len; + return 0; /* don't override the exit code */ +} + +char _license[] SEC("license") = "GPL"; |