From f7f5b215eadf47fde1300cd8855532bc4bfe0ff4 Mon Sep 17 00:00:00 2001 From: Vadim Kochan Date: Sat, 10 Jan 2015 00:45:48 +0200 Subject: sock: Add cause message in case of error Add error messages which explain the cause of error state of the socket functions, so it makes message like: $ ./netsniff-ng/netsniff-ng -i wlp3s0 Creation of PF socket failed: Operation not permitted more understandable. Signed-off-by: Vadim Kochan Signed-off-by: Daniel Borkmann --- sock.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/sock.c b/sock.c index 6c973ed..fbf50d8 100644 --- a/sock.c +++ b/sock.c @@ -19,7 +19,7 @@ int af_socket(int af) sock = socket(af, SOCK_DGRAM, 0); if (unlikely(sock < 0)) - panic("Creation AF socket failed!\n"); + panic("Creation AF socket failed: %s\n", strerror(errno)); return sock; } @@ -28,7 +28,7 @@ int pf_socket(void) { int sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (unlikely(sock < 0)) - panic("Creation of PF socket failed!\n"); + panic("Creation of PF socket failed: %s\n", strerror(errno)); return sock; } @@ -37,7 +37,7 @@ int pf_tx_socket(void) { int sock = socket(PF_PACKET, SOCK_RAW, 0); if (unlikely(sock < 0)) - panic("Creation of PF TX socket failed!\n"); + panic("Creation of PF TX socket failed: %s\n", strerror(errno)); return sock; } @@ -67,14 +67,14 @@ void set_sock_prio(int fd, int prio) ret = setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val)); if (unlikely(ret)) - panic("Cannot set socket priority!\n"); + panic("Cannot set socket priority: %s\n", strerror(errno)); } void set_nonblocking(int fd) { int ret = fcntl(fd, F_SETFL, fcntl(fd, F_GETFD, 0) | O_NONBLOCK); if (unlikely(ret < 0)) - panic("Cannot fcntl!\n"); + panic("Cannot fcntl: %s\n", strerror(errno)); } int set_nonblocking_sloppy(int fd) @@ -88,7 +88,7 @@ void set_socket_keepalive(int fd) ret = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(one)); if (unlikely(ret)) - panic("Cannot set TCP keepalive!\n"); + panic("Cannot set TCP keepalive: %s\n", strerror(errno)); } void set_tcp_nodelay(int fd) @@ -97,7 +97,7 @@ void set_tcp_nodelay(int fd) ret = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one)); if (unlikely(ret)) - panic("Cannot set TCP nodelay!\n"); + panic("Cannot set TCP nodelay: %s\n", strerror(errno)); } int set_ipv6_only(int fd) @@ -112,7 +112,7 @@ int set_reuseaddr(int fd) ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); if (unlikely(ret < 0)) - panic("Cannot reuse addr!\n"); + panic("Cannot reuse addr: %s\n", strerror(errno)); return 0; } @@ -123,7 +123,7 @@ void set_mtu_disc_dont(int fd) ret = setsockopt(fd, SOL_IP, IP_MTU_DISCOVER, &mtu, sizeof(mtu)); if (unlikely(ret)) - panic("Cannot set MTU discovery options!\n"); + panic("Cannot set MTU discovery options: %s\n", strerror(errno)); } enum { -- cgit v1.2.3-54-g00ecf