diff options
Diffstat (limited to 'kernel/bpf/syscall.c')
| -rw-r--r-- | kernel/bpf/syscall.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index f1d9ee9717a1..7db7182a3057 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -5943,6 +5943,28 @@ static int token_create(union bpf_attr *attr) return bpf_token_create(attr); } +#define BPF_PROG_STREAM_READ_BY_FD_LAST_FIELD prog_stream_read.prog_fd + +static int prog_stream_read(union bpf_attr *attr) +{ + char __user *buf = u64_to_user_ptr(attr->prog_stream_read.stream_buf); + u32 len = attr->prog_stream_read.stream_buf_len; + struct bpf_prog *prog; + int ret; + + if (CHECK_ATTR(BPF_PROG_STREAM_READ_BY_FD)) + return -EINVAL; + + prog = bpf_prog_get(attr->prog_stream_read.prog_fd); + if (IS_ERR(prog)) + return PTR_ERR(prog); + + ret = bpf_prog_stream_read(prog, attr->prog_stream_read.stream_id, buf, len); + bpf_prog_put(prog); + + return ret; +} + static int __sys_bpf(enum bpf_cmd cmd, bpfptr_t uattr, unsigned int size) { union bpf_attr attr; @@ -6079,6 +6101,9 @@ static int __sys_bpf(enum bpf_cmd cmd, bpfptr_t uattr, unsigned int size) case BPF_TOKEN_CREATE: err = token_create(&attr); break; + case BPF_PROG_STREAM_READ_BY_FD: + err = prog_stream_read(&attr); + break; default: err = -EINVAL; break; |