TCGETPGRP(3) OpenBSD Programmer's Manual TCGETPGRP(3)NAMEtcgetpgrp - get foreground process group ID
SYNOPSIS
#include <sys/types.h>
#include <unistd.h>
pid_t
tcgetpgrp(int fd);
DESCRIPTION
The tcgetpgrp() function returns the value of the process group ID of the
foreground process group associated with the terminal device. If there
is no foreground process group, tcgetpgrp() returns an invalid process
ID.
ERRORS
If an error occurs, tcgetpgrp() returns -1 and the global variable errno
is set to indicate the error, as follows:
[EBADF] The fd argument is not a valid file descriptor.
[ENOTTY] The calling process does not have a controlling terminal or
the underlying terminal device represented by fd is not the
controlling terminal.
SEE ALSOsetpgid(2), setsid(2), tcsetpgrp(3)STANDARDS
The tcgetpgrp() function is expected to be compliant with the IEEE Std
1003.1-1988 (``POSIX'') specification.
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9