1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* Copyright (c) 2015 Richard Braun.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include "../error.h"
#include "../macros.h"
#include "../shell.h"
static void
test_exit(int argc, char *argv[])
{
(void)argc;
(void)argv;
/* Calling exit directly doesn't reset the terminal */
raise(SIGINT);
}
static void
test_top(int argc, char *argv[])
{
(void)argc;
(void)argv;
system("top");
}
static void
test_add(int argc, char *argv[])
{
int i, ret, tmp, total;
if (argc < 3) {
printf("shell: add: invalid arguments\n");
return;
}
for (total = 0, i = 1; i < argc; i++) {
ret = sscanf(argv[i], "%d", &tmp);
if (ret != 1) {
printf("shell: add: '%s': invalid argument\n", argv[i]);
return;
}
total += tmp;
}
printf("%d\n", total);
}
static struct shell_cmd test_shell_cmds[] = {
SHELL_CMD_INITIALIZER2("add", test_add,
"add <i1 i2 [i3 ...]>", "add integers",
"The user must pass at least two integers"),
SHELL_CMD_INITIALIZER("top", test_top,
"top", "display system processes"),
SHELL_CMD_INITIALIZER("exit", test_exit,
"exit", "leave the shell"),
};
int
main(int argc, char *argv[])
{
struct termios termios;
unsigned int i;
int ret;
(void)argc;
(void)argv;
for (i = 0; i < ARRAY_SIZE(test_shell_cmds); i++) {
ret = shell_cmd_register(&test_shell_cmds[i]);
if (ret) {
error_die(ret);
}
}
setbuf(stdin, NULL);
ret = tcgetattr(fileno(stdin), &termios);
if (ret) {
perror("tcgetattr");
return EXIT_FAILURE;
}
termios.c_lflag &= ~(ICANON | ECHO);
termios.c_cc[VMIN] = 1;
ret = tcsetattr(fileno(stdin), TCSANOW, &termios);
if (ret) {
perror("tcsetattr");
return EXIT_FAILURE;
}
shell_setup();
shell_run();
test_exit(0, NULL);
}
|
