root / prex-0.9.0 / usr / test / kmon / kmon.c @ 03e9c04a
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/*
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* Copyright (c) 2005, Kohsuke Ohtani
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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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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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/*
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* kmon.c - main routine for kernel monitor
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*/
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#include <sys/prex.h> |
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#include <sys/keycode.h> |
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#include <ctype.h> |
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#include <stdio.h> |
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#include <limits.h> |
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#define ARGMAX 32 |
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extern int dispatch_cmd(int argc, char **args); |
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/*
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* Parse an entire given line.
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*/
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static int |
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parse_line(char *line)
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{ |
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static char *args[ARGMAX]; |
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char *p, *word = NULL; |
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int argc = 0; |
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int rc = 0; |
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if (line[0] != ' ' && line[0] != '\t') |
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word = line; |
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p = line; |
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while (*p) {
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if (word == NULL) { |
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/* Skip white space. */
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if (*p != ' ' && *p != '\t') |
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word = p; |
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} else {
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if (*p == ' ' || *p == '\t') { |
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*p = '\0';
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args[argc++] = word; |
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word = NULL;
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if (argc >= ARGMAX - 1) { |
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printf("Too many args\n");
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return 0; |
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} |
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} |
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} |
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p++; |
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} |
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if (word)
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args[argc++] = word; |
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args[argc] = NULL;
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if (argc) {
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if (dispatch_cmd(argc, args))
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rc = 1;
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} |
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return rc;
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} |
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static void |
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read_line(char *line)
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{ |
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int c, len = 0; |
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char *p = line;
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for (;;) {
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c = getchar(); |
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if (c == '\n' || len > LINE_MAX) { |
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*p = '\0';
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return;
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} |
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*p = (char)c;
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p++; |
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len++; |
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} |
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} |
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int
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main(int argc, char *argv[]) |
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{ |
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static char line[LINE_MAX]; |
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printf("Prex kernel monitor - type 'help' to list commands\n");
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for (;;) {
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printf("[kmon]$ ");
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read_line(line); |
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if (parse_line(line))
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break;
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} |
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return 0; |
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} |