root / prex-0.9.0 / usr / test / kmon / kmon.c @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*
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2 | * Copyright (c) 2005, Kohsuke Ohtani
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the author nor the names of any co-contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | */
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29 | |||
30 | /*
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31 | * kmon.c - main routine for kernel monitor
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32 | */
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33 | |||
34 | #include <sys/prex.h> |
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35 | #include <sys/keycode.h> |
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36 | #include <ctype.h> |
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37 | #include <stdio.h> |
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38 | #include <limits.h> |
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39 | |||
40 | #define ARGMAX 32 |
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41 | |||
42 | extern int dispatch_cmd(int argc, char **args); |
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43 | |||
44 | /*
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45 | * Parse an entire given line.
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46 | */
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47 | static int |
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48 | parse_line(char *line)
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49 | { |
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50 | static char *args[ARGMAX]; |
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51 | char *p, *word = NULL; |
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52 | int argc = 0; |
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53 | int rc = 0; |
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54 | |||
55 | if (line[0] != ' ' && line[0] != '\t') |
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56 | word = line; |
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57 | |||
58 | p = line; |
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59 | while (*p) {
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60 | if (word == NULL) { |
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61 | /* Skip white space. */
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62 | if (*p != ' ' && *p != '\t') |
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63 | word = p; |
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64 | } else {
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65 | if (*p == ' ' || *p == '\t') { |
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66 | *p = '\0';
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67 | args[argc++] = word; |
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68 | word = NULL;
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69 | if (argc >= ARGMAX - 1) { |
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70 | printf("Too many args\n");
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71 | return 0; |
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72 | } |
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73 | } |
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74 | } |
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75 | p++; |
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76 | } |
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77 | if (word)
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78 | args[argc++] = word; |
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79 | args[argc] = NULL;
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80 | |||
81 | if (argc) {
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82 | if (dispatch_cmd(argc, args))
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83 | rc = 1;
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84 | } |
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85 | return rc;
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86 | } |
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87 | |||
88 | static void |
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89 | read_line(char *line)
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90 | { |
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91 | int c, len = 0; |
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92 | char *p = line;
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93 | |||
94 | for (;;) {
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95 | c = getchar(); |
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96 | if (c == '\n' || len > LINE_MAX) { |
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97 | *p = '\0';
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98 | return;
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99 | } |
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100 | *p = (char)c;
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101 | p++; |
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102 | len++; |
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103 | } |
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104 | } |
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105 | |||
106 | int
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107 | main(int argc, char *argv[]) |
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108 | { |
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109 | static char line[LINE_MAX]; |
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110 | |||
111 | printf("Prex kernel monitor - type 'help' to list commands\n");
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112 | |||
113 | for (;;) {
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114 | printf("[kmon]$ ");
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115 | read_line(line); |
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116 | if (parse_line(line))
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117 | break;
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118 | } |
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119 | return 0; |
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120 | } |