MirOS Manual: tcsetpgrp(3)

TCSETPGRP(3)               BSD Programmer's Manual                TCSETPGRP(3)

NAME

     tcsetpgrp - set foreground process group ID

SYNOPSIS

     #include <sys/types.h>
     #include <unistd.h>

     int
     tcsetpgrp(int fd, pid_t pgrp_id);

DESCRIPTION

     If the process has a controlling terminal, the tcsetpgrp() function sets
     the foreground process group ID associated with the terminal device to
     pgrp_id. The terminal device associated with fd must be the controlling
     terminal of the calling process and the controlling terminal must be
     currently associated with the session of the calling process. The value
     of pgrp_id must be the same as the process group ID of a process in the
     same session as the calling process.

     Upon successful completion, tcsetpgrp() returns a value of zero.

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.

     [EINVAL]      An invalid value of pgrp_id was specified.

     [ENOTTY]      The calling process does not have a controlling terminal,
                   or the file represented by fd is not the controlling termi-
                   nal, or the controlling terminal is no longer associated
                   with the session of the calling process.

     [EPERM]       The pgrp_id argument does not match the process group ID of
                   a process in the same session as the calling process.

SEE ALSO

     setpgid(2), setsid(2), tcgetpgrp(3)

STANDARDS

     The tcsetpgrp() function is expected to be compliant with the IEEE Std
     1003.1-1988 ("POSIX") specification.

MirOS BSD #10-current           March 29, 1992                               1

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