opentty: use ioctl( TIOCEXCL ) for exclusive access when open a usb serial device

wdoekes / asterisk-chan-dongle

chan_dongle channel driver for Huawei UMTS cards, works with Asterisk 14+

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Closed Andrik45719 closed 7 years ago

Andrik45719 commented 7 years ago

This will prevent other processes for opening the device. Simultaneous writing leads to errors with subsequent modem initialization