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1.1 ! root 1: ! 2: ! 3: ct Device Driver ct ! 4: ! 5: ! 6: ! 7: ! 8: Controlling terminal driver ! 9: ! 10: ! 11: For each process, the controlling terminal driver /dev/tty is an ! 12: interface to the appropriate terminal driver. COHERENT passes ! 13: any input-output call (e.g. cclloossee, iiooccttll, ooppeenn, rreeaadd, or wwrriittee) ! 14: on this special file directly to the controlling terminal device ! 15: for the requesting process. ! 16: ! 17: Normally, the controlling terminal is the default standard input, ! 18: output, and error device. This is not the case for daemon ! 19: processes started by the initial process. ! 20: ! 21: ***** Files ***** ! 22: ! 23: /dev/tty ! 24: ! 25: ***** See Also ***** ! 26: ! 27: device drivers, init ! 28: ! 29: ***** Diagnostics ***** ! 30: ! 31: When a call finds no valid controlling terminal for a process, it ! 32: returns a value of -1 and sets errno to ENXIO. ! 33: ! 34: ! 35: ! 36: ! 37: ! 38: ! 39: ! 40: ! 41: ! 42: ! 43: ! 44: ! 45: ! 46: ! 47: ! 48: ! 49: ! 50: ! 51: ! 52: ! 53: ! 54: ! 55: ! 56: ! 57: ! 58: ! 59: ! 60: ! 61: ! 62: ! 63: ! 64: COHERENT Lexicon Page 1 ! 65: ! 66:
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