| 1 | |
| 2 | * Created by: Jason Wessel <[email protected]>
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| 3 | *
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| 4 | * Copyright (c) 2010 Wind River Systems, Inc. All Rights Reserved.
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| 5 | *
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| 6 | * This file is licensed under the terms of the GNU General Public
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| 7 | * License version 2. This program is licensed "as is" without any
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| 8 | * warranty of any kind, whether express or implied.
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| 9 |
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| 10 |
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| 11 | #include <linux/module.h>
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| 12 | #include <linux/kdb.h>
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| 13 |
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| 14 | |
| 15 | * All kdb shell command call backs receive argc and argv, where
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| 16 | * argv[0] is the command the end user typed
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| 17 |
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| 18 | static int kdb_hello_cmd(int argc, const char **argv)
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| 19 | {
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| 20 | if (argc > 1)
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| 21 | return KDB_ARGCOUNT;
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| 22 |
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| 23 | if (argc)
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| 24 | kdb_printf("Hello %s.\n", argv[1]);
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| 25 | else
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| 26 | kdb_printf("Hello world!\n");
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| 27 |
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| 28 | return 0;
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| 29 | }
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| 30 |
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| 31 | static kdbtab_t hello_cmd = {
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| 32 | .name = "hello",
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| 33 | .func = kdb_hello_cmd,
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| 34 | .usage = "[string]",
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| 35 | .help = "Say Hello World or Hello [string]",
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| 36 | };
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| 37 |
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| 38 | static int __init kdb_hello_cmd_init(void)
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| 39 | {
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| 40 | |
| 41 | * Registration of a dynamically added kdb command is done with
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| 42 | * kdb_register().
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| 43 |
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| 44 | kdb_register(&hello_cmd);
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| 45 | return 0;
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| 46 | }
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| 47 |
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| 48 | static void __exit kdb_hello_cmd_exit(void)
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| 49 | {
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| 50 | kdb_unregister(&hello_cmd);
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| 51 | }
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| 52 |
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| 53 | module_init(kdb_hello_cmd_init);
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| 54 | module_exit(kdb_hello_cmd_exit);
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| 55 |
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| 56 | MODULE_AUTHOR("WindRiver");
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| 57 | MODULE_DESCRIPTION("KDB example to add a hello command");
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| 58 | MODULE_LICENSE("GPL");
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