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Summary: Unexpected error ENOTSOCK upon closing filedes[0] obtained via socketpair
#include <stdio.h> #include <stdlib.h> #include <sys/socket.h>
int main(int argc, char *argv[]) { auto int a_fd[02]; if(socketpair(AF_LOCAL, SOCK_STREAM, 0, a_fd)) perror("socketpair"); else { auto int an_ix = 0; for(; an_ix < 02; ++an_ix) if(close(a_fd[an_ix])) { enum BufLen { BUF_LEN = 040 }; auto char a_buf[BUF_LEN]; perror(snprintf(a_buf, BUF_LEN, "close %d", an_ix) > 0? a_buf: "sprintf"); }} return EXIT_SUCCESS; }
Error message: close 0: Socket operation on non-socket
(Note it occurs with filedes[0] only, even if close is called for filedes[1] first).
Best regards, Chris
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