Release 4.14 tools/perf/util/term.c

// SPDX-License-Identifier: GPL-2.0
#include "term.h"
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include <sys/ioctl.h>



void get_term_dimensions(struct winsize *ws)
{
	char *s = getenv("LINES");

	if (s != NULL) {
		ws->ws_row = atoi(s);
		s = getenv("COLUMNS");
		if (s != NULL) {
			ws->ws_col = atoi(s);
			if (ws->ws_row && ws->ws_col)
				return;
		}
	}
#ifdef TIOCGWINSZ
	if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
	    ws->ws_row && ws->ws_col)
		return;
#endif
	ws->ws_row = 25;
	ws->ws_col = 80;
}

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void set_term_quiet_input(struct termios *old)
{
	struct termios tc;

	tcgetattr(0, old);
	tc = *old;
	tc.c_lflag &= ~(ICANON | ECHO);
	tc.c_cc[VMIN] = 0;
	tc.c_cc[VTIME] = 0;
	tcsetattr(0, TCSANOW, &tc);
}
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Directory: tools/perf/util

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