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      1 /* $NetBSD: userconf.c,v 1.1 2022/03/25 21:23:00 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2022 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jared McNeill <jmcneill (at) invisible.ca>.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include "efiboot.h"
     33 
     34 #include <sys/queue.h>
     35 
     36 struct userconf_command {
     37 	const char *uc_text;
     38 	TAILQ_ENTRY(userconf_command) entries;
     39 };
     40 TAILQ_HEAD(, userconf_command) userconf_commands =
     41     TAILQ_HEAD_INITIALIZER(userconf_commands);
     42 
     43 void
     44 userconf_foreach(void (*fn)(const char *))
     45 {
     46 	struct userconf_command *uc;
     47 
     48 	TAILQ_FOREACH(uc, &userconf_commands, entries) {
     49 		fn(uc->uc_text);
     50 	}
     51 }
     52 
     53 void
     54 userconf_add(const char *cmd)
     55 {
     56 	struct userconf_command *uc;
     57 	size_t len;
     58 	char *text;
     59 
     60 	while (*cmd == ' ' || *cmd == '\t') {
     61 		++cmd;
     62 	}
     63 	if (*cmd == '\0') {
     64 		return;
     65 	}
     66 
     67 	uc = alloc(sizeof(*uc));
     68 	if (uc == NULL) {
     69 		panic("couldn't allocate userconf command");
     70 	}
     71 
     72 	len = strlen(cmd) + 1;
     73 	text = alloc(len);
     74 	if (text == NULL) {
     75 		panic("couldn't allocate userconf command buffer");
     76 	}
     77 	memcpy(text, cmd, len);
     78 
     79 	uc->uc_text = text;
     80 	TAILQ_INSERT_TAIL(&userconf_commands, uc, entries);
     81 }
     82