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allsey87/dump_ktermios.c

Created July 24, 2018 11:47
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Print the configuration of a serial port from the Linux kernel in stty -g style
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dump_ktermios.c
static void dump_ktermios(struct device* dev, struct ktermios* ktermios, const char* func) {
char buf[128];
unsigned int idx = 0;
size_t i = 0;
idx += snprintf(buf + idx, 128 - idx, "%lx:%lx:%lx:%lx",
(unsigned long int) ktermios->c_iflag,
(unsigned long int) ktermios->c_oflag,
(unsigned long int) ktermios->c_cflag,
(unsigned long int) ktermios->c_lflag);
for(i = 0; i < NCCS; ++i)
idx += snprintf(buf + idx, 128 - idx, ":%lx", (unsigned long int) ktermios->c_cc[i]);
dev_info(dev, "%s: %s", func, buf);
}
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