/usr/include/bitlbee/sock.h is in bitlbee-dev 3.2.2-2+deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | #include <errno.h>
#include <fcntl.h>
#ifndef _WIN32
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#define sock_make_nonblocking(fd) fcntl(fd, F_SETFL, O_NONBLOCK)
#define sock_make_blocking(fd) fcntl(fd, F_SETFL, 0)
#define sockerr_again() (errno == EINPROGRESS || errno == EINTR)
void closesocket( int fd );
#else
# include <winsock2.h>
# include <ws2tcpip.h>
# if !defined(BITLBEE_CORE) && defined(_MSC_VER)
# pragma comment(lib,"bitlbee.lib")
# endif
# include <io.h>
# define sock_make_nonblocking(fd) { int non_block = 1; ioctlsocket(fd, FIONBIO, &non_block); }
# define sock_make_blocking(fd) { int non_block = 0; ioctlsocket(fd, FIONBIO, &non_block); }
# define sockerr_again() (WSAGetLastError() == WSAEINTR || WSAGetLastError() == WSAEINPROGRESS || WSAGetLastError() == WSAEWOULDBLOCK)
# define ETIMEDOUT WSAETIMEDOUT
# define sleep(a) Sleep(a*1000)
#endif
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