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41 lines
746 B
C
41 lines
746 B
C
/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../util.h"
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void
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devtotty(int dev, int *tty_maj, int *tty_min)
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{
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*tty_maj = (dev >> 8) & 0xfff;
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*tty_min = (dev & 0xff) | ((dev >> 12) & 0xfff00);
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}
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char *
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ttytostr(int tty_maj, int tty_min)
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{
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const char *pts = "pts/";
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const char *tty = "tty/";
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char *ttystr;
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size_t len;
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/* Up to 10k ttys */
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len = strlen(pts) + 4 + 1;
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ttystr = malloc(len);
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if (!ttystr)
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eprintf("malloc:");
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switch (tty_maj) {
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case 136:
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snprintf(ttystr, len, "%s%d", pts, tty_min);
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break;
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case 4:
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snprintf(ttystr, len, "%s%d", tty, tty_min);
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break;
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default:
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ttystr[0] = '?';
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ttystr[1] = '\0';
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break;
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}
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return ttystr;
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}
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