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Command: getsockopt | Section: 2 | Source: MINIX | File: getsockopt.2
GETSOCKOPT(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 op-
tion, 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)