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home | helpGETSOCKOPT(2) System Calls Manual GETSOCKOPT(2) NAME getsockopt - get the value of a socket option. SYNOPSIS #include <sys/socket.h> int getsockopt(int sd, int level, int opt_name, void * opt_val, socklen_t * opt_len); DESCRIPTION getsockopt() provides an interface to get the value of a specific option, referenced by opt_name, for a given socket descriptor sd. RETURN VALUES On success, this function returns 0. On error, -1 is returned and errno is set. ERRORS [ENOSYS] The option opt_name is not available/supported at the level specified for the socket sd. [ENOTSOCK] sd is not a socket descriptor. SEE ALSO socket(2), socketpair(2), setsockopt(2) GETSOCKOPT(2)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO