Annotation of prex/usr/bin/dmesg/dmesg.c, Revision 1.1.1.1
1.1 nbrk 1: /*-
2: * Copyright (c) 2007, Kohsuke Ohtani
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #include <prex/prex.h>
31:
32: #include <unistd.h>
33: #include <stdio.h>
34: #include <stdlib.h>
35: #include <termios.h>
36:
37: #ifdef CMDBOX
38: #define main(argc, argv) dmesg_main(argc, argv)
39: #endif
40:
41: static int print_msg(char *buf, int size);
42:
43: int
44: main(int argc, char *argv[])
45: {
46: int size;
47: char *buf;
48:
49: if (sys_debug(DCMD_LOGSIZE, &size) != 0) {
50: fprintf(stderr, "dmesg: not supported\n");
51: exit(1);
52: }
53:
54: if ((buf = malloc(size)) == NULL)
55: exit(1);
56:
57: if (sys_debug(DCMD_GETLOG, buf) != 0) {
58: free(buf);
59: exit(1);
60: }
61: print_msg(buf, size);
62: free(buf);
63: return 0;
64: }
65:
66: static int
67: print_msg(char *buf, int bufsize)
68: {
69: struct winsize ws;
70: int i, row, maxrow;
71:
72: /* Get screen size */
73: maxrow = 79;
74: if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == 0)
75: maxrow = (int)ws.ws_row - 1;
76:
77: row = 0;
78: for (i = 0; i < bufsize; i++) {
79: if (*buf == '\0')
80: break;
81: if (*buf == '\n')
82: row++;
83: putc(*buf, stdout);
84: if (row >= maxrow) {
85: printf("--More-- ");
86: getc(stdin);
87: putchar('\n');
88: row = 0;
89: }
90: buf++;
91: }
92: return 0;
93: }
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