diff options
Diffstat (limited to 'src/mnl.c')
| -rw-r--r-- | src/mnl.c | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -245,9 +245,10 @@ void mnl_err_list_free(struct mnl_err *err) xfree(err); } -static void mnl_set_sndbuffer(const struct mnl_socket *nl, - struct nftnl_batch *batch) +static void mnl_set_sndbuffer(struct netlink_ctx *ctx) { + struct mnl_socket *nl = ctx->nft->nf_sock; + struct nftnl_batch *batch = ctx->batch; socklen_t len = sizeof(int); int sndnlbuffsiz = 0; int newbuffsiz; @@ -260,9 +261,15 @@ static void mnl_set_sndbuffer(const struct mnl_socket *nl, return; /* Rise sender buffer length to avoid hitting -EMSGSIZE */ + setsockopt(mnl_socket_get_fd(nl), SOL_SOCKET, SO_SNDBUF, + &newbuffsiz, sizeof(socklen_t)); + + /* unpriviledged containers check for CAP_NET_ADMIN on the init_user_ns. */ if (setsockopt(mnl_socket_get_fd(nl), SOL_SOCKET, SO_SNDBUFFORCE, - &newbuffsiz, sizeof(socklen_t)) < 0) - return; + &newbuffsiz, sizeof(socklen_t)) < 0) { + if (errno == EPERM) + ctx->maybe_emsgsize = newbuffsiz; + } } static unsigned int nlsndbufsiz; @@ -409,7 +416,7 @@ int mnl_batch_talk(struct netlink_ctx *ctx, struct list_head *err_list, .nl_ctx = ctx, }; - mnl_set_sndbuffer(ctx->nft->nf_sock, ctx->batch); + mnl_set_sndbuffer(ctx); mnl_nft_batch_to_msg(ctx, &msg, &snl, iov, iov_len); |