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| author | Eugene Syromyatnikov <evgsyr@gmail.com> | 2021-12-16 19:02:16 +0100 |
|---|---|---|
| committer | Eugene Syromyatnikov <evgsyr@gmail.com> | 2021-12-16 19:02:16 +0100 |
| commit | e61c5639c1ba89f78d802e3f7b892c752bf7a86b (patch) | |
| tree | 66bf386f3118cd0cbad531c54a4141f1d5630158 | |
| parent | f2c38e248eab73953531a27c967fa0fca823571c (diff) | |
| download | strace-e61c5639c1ba89f78d802e3f7b892c752bf7a86b.tar.gz | |
inet_diag: implement INET_DIAG_SOCKOPT attribute decoding
| -rw-r--r-- | src/netlink_inet_diag.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/netlink_inet_diag.c b/src/netlink_inet_diag.c index 6e1094588..9388eb1d7 100644 --- a/src/netlink_inet_diag.c +++ b/src/netlink_inet_diag.c @@ -695,6 +695,67 @@ decode_diag_bpf_storages(struct tcb *const tcp, return true; } +static bool +decode_diag_sockopt(struct tcb *const tcp, + const kernel_ulong_t addr, + const unsigned int len, + const void *const opaque_data) +{ + struct inet_diag_sockopt { + uint8_t recverr :1, + is_icsk :1, + freebind :1, + hdrincl :1, + mc_loop :1, + transparent :1, + mc_all :1, + nodefrag :1; + uint8_t bind_address_no_port :1, + recverr_rfc4884 :1, + defer_connect :1, + unused :5; + } sockopt; + + if (len < sizeof(sockopt)) + return false; + if (umove_or_printaddr(tcp, addr, &sockopt)) + return true; + + tprint_struct_begin(); + PRINT_FIELD_U(sockopt, recverr); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, is_icsk); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, freebind); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, hdrincl); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, mc_loop); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, transparent); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, mc_all); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, nodefrag); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, bind_address_no_port); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, recverr_rfc4884); + tprint_struct_next(); + PRINT_FIELD_U(sockopt, defer_connect); + if (sockopt.unused) { + tprint_struct_next(); + PRINT_FIELD_U(sockopt, unused); + tprints_comment("bits 3..8"); + } + tprint_struct_end(); + + print_nonzero_bytes(tcp, tprint_array_next, addr, sizeof(sockopt), + MIN(len, get_pagesize()), QUOTE_FORCE_HEX); + + return true; +} + static const nla_decoder_t inet_diag_msg_nla_decoders[] = { [INET_DIAG_MEMINFO] = decode_inet_diag_meminfo, [INET_DIAG_INFO] = NULL, /* unimplemented */ @@ -717,6 +778,7 @@ static const nla_decoder_t inet_diag_msg_nla_decoders[] = { [INET_DIAG_ULP_INFO] = decode_diag_ulp_info, [INET_DIAG_SK_BPF_STORAGES] = decode_diag_bpf_storages, [INET_DIAG_CGROUP_ID] = decode_nla_u64, + [INET_DIAG_SOCKOPT] = decode_diag_sockopt, }; DECL_NETLINK_DIAG_DECODER(decode_inet_diag_msg) |