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eb4c31fd41
during boot. Change the last argument of gets() to indicate a visibility flag and add definitions for the numerical constants. Except for the value 2, gets() will behave exactly the same, so existing consumers shouldn't break. We only use it in two places, though. Submitted by: lme (older version)
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/*-
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* Copyright (c) 1999 Michael Smith
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* Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/cons.h>
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#include <sys/libkern.h>
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void
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gets(char *cp, size_t size, int visible)
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{
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char *lp, *end;
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int c;
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lp = cp;
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end = cp + size - 1;
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for (;;) {
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c = cngetc() & 0177;
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switch (c) {
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case '\n':
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case '\r':
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printf("%c", c);
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*lp = '\0';
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return;
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case '\b':
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case '\177':
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if (lp > cp) {
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if (visible)
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printf("%c \b", c);
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lp--;
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}
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continue;
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case '\0':
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continue;
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default:
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if (lp < end) {
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switch (visible) {
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case GETS_NOECHO:
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break;
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case GETS_ECHOPASS:
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printf("*");
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break;
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default:
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printf("%c", c);
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break;
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}
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*lp++ = c;
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}
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}
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}
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}
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