TTYMSG(3) |
Library Functions Manual |
TTYMSG(3) |
NAME
ttymsg — ttymsg utility function
LIBRARY
System Utilities Library (libutil, -lutil)
SYNOPSIS
#include <util.h>
char *
ttymsg(struct iovec *iov, int iovlen, const char *tty, int tmout);
DESCRIPTION
The
ttymsg() function is used by programs such as
talkd(8),
syslogd(8),
wall(1), etc., to display the contents of a uio structure on a terminal.
ttymsg() forks and finishes in the child if the write would block after waiting up to
tmout seconds.
RETURN VALUES
ttymsg() returns a pointer to an error string on unexpected error; the string is not newline-terminated. Various "normal" errors are ignored (exclusive-use, lack of permission, etc.).