From 772aae8b1dca9b14117aa3716286d763b6f3da88 Mon Sep 17 00:00:00 2001 From: Donald Sharp Date: Mon, 7 Oct 2019 11:31:33 -0400 Subject: [PATCH] lib: Add getsockopt_so_recvbuf Add a new function getsockopt_so_recvbuf which tells you the operating systems receive buffer size. Signed-off-by: Donald Sharp --- lib/sockopt.c | 15 +++++++++++++++ lib/sockopt.h | 1 + 2 files changed, 16 insertions(+) diff --git a/lib/sockopt.c b/lib/sockopt.c index 8e38a29278..7726d74ff7 100644 --- a/lib/sockopt.c +++ b/lib/sockopt.c @@ -72,6 +72,21 @@ int getsockopt_so_sendbuf(const int sock) return optval; } +int getsockopt_so_recvbuf(const int sock) +{ + uint32_t optval; + socklen_t optlen = sizeof(optval); + int ret = getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (char *)&optval, + &optlen); + if (ret < 0) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "fd %d: can't getsockopt SO_RCVBUF: %d (%s)", sock, + errno, safe_strerror(errno)); + return ret; + } + return optval; +} + static void *getsockopt_cmsg_data(struct msghdr *msgh, int level, int type) { struct cmsghdr *cmsg; diff --git a/lib/sockopt.h b/lib/sockopt.h index 732fec92aa..f6b57b8e07 100644 --- a/lib/sockopt.h +++ b/lib/sockopt.h @@ -30,6 +30,7 @@ extern "C" { extern void setsockopt_so_recvbuf(int sock, int size); extern void setsockopt_so_sendbuf(const int sock, int size); extern int getsockopt_so_sendbuf(const int sock); +extern int getsockopt_so_recvbuf(const int sock); extern int setsockopt_ipv6_pktinfo(int, int); extern int setsockopt_ipv6_checksum(int, int); -- 2.39.5