55 lines
897 B
C
55 lines
897 B
C
#include <errno.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <net/gen/in.h>
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#include <net/gen/tcp.h>
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#include <net/gen/tcp_io.h>
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#define DEBUG 1
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static int _tcp_shutdown(int socket, int how);
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int shutdown(int socket, int how)
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{
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int r;
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nwio_tcpconf_t tcpconf;
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r= ioctl(socket, NWIOGTCPCONF, &tcpconf);
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if (r != -1 || errno != ENOTTY)
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{
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if (r == -1)
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{
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/* Bad file descriptor */
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return -1;
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}
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return _tcp_shutdown(socket, how);
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}
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#if DEBUG
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fprintf(stderr, "shutdown: not implemented for fd %d\n", socket);
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#endif
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errno= ENOSYS;
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return -1;
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}
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static int _tcp_shutdown(int socket, int how)
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{
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int r;
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if (how == SHUT_WR || how == SHUT_RDWR)
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{
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r= ioctl(socket, NWIOTCPSHUTDOWN, NULL);
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if (r == -1)
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return -1;
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if (how == SHUT_WR)
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return 0;
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}
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/* We can't shutdown the read side of the socket. */
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errno= ENOSYS;
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return -1;
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}
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