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TCGETPGRP (3) | C library functions | Unix Manual Pages | :man

NAME

tcgetpgrp - get foreground process group ID

CONTENTS

Library
Synopsis
Description
Errors
See Also
Standards

LIBRARY


.Lb libc

SYNOPSIS


.In sys/types.h
.In 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 ALSO

setpgid(2), setsid(2), tcsetpgrp(3)

STANDARDS


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