SIGTTIN signal, which suspends it. The tcgetpgrp (3) and tcsetpgrp (3) functions are used ... ALSO getuid (2), setsid (2), tcgetpgrp (3), tcsetpgrp (3), termios (3), credentialsSIGTTIN signal, which suspends it. The tcgetpgrp (3) and tcsetpgrp (3) functions are used ... ALSO getuid (2), setsid (2), tcgetpgrp (3), tcsetpgrp (3), termios (3), credentialsSIGTTIN signal, which suspends it. The tcgetpgrp (3) and tcsetpgrp (3) functions are used ... ALSO getuid (2), setsid (2), tcgetpgrp (3), tcsetpgrp (3), termios (3), credentialsSIGTTIN signal, which suspends it. The tcgetpgrp (3) and tcsetpgrp (3) functions are used ... ALSO getuid (2), setsid (2), tcgetpgrp (3), tcsetpgrp (3), termios (3), credentials